Class: Rex::Proto::SMB::Client
- Inherits:
-
Object
- Object
- Rex::Proto::SMB::Client
- Defined in:
- lib/rex/proto/smb/client.rb
Constant Summary collapse
- CONST =
Some short-hand class aliases
Rex::Proto::SMB::Constants
- CRYPT =
Rex::Proto::SMB::Crypt
- UTILS =
Rex::Proto::SMB::Utils
- XCEPT =
Rex::Proto::SMB::Exceptions
- EVADE =
Rex::Proto::SMB::Evasions
- NTLM_CRYPT =
Rex::Proto::NTLM::Crypt
- NTLM_CONST =
Rex::Proto::NTLM::Constants
- NTLM_UTILS =
Rex::Proto::NTLM::Utils
Instance Attribute Summary collapse
-
#auth_user ⇒ Object
Returns the value of attribute auth_user.
-
#auth_user_id ⇒ Object
Returns the value of attribute auth_user_id.
-
#challenge_key ⇒ Object
public read methods.
-
#default_domain ⇒ Object
Returns the value of attribute default_domain.
-
#default_max_buffer_size ⇒ Object
Returns the value of attribute default_max_buffer_size.
-
#default_name ⇒ Object
Returns the value of attribute default_name.
-
#dialect ⇒ Object
public read methods.
-
#dns_domain_name ⇒ Object
Returns the value of attribute dns_domain_name.
-
#dns_host_name ⇒ Object
Returns the value of attribute dns_host_name.
-
#encrypt_passwords ⇒ Object
public read/write methods.
-
#evasion_opts ⇒ Object
public read/write methods.
-
#extended_security ⇒ Object
public read/write methods.
-
#last_file_id ⇒ Object
Returns the value of attribute last_file_id.
-
#last_search_id ⇒ Object
Returns the value of attribute last_search_id.
-
#last_tree_id ⇒ Object
Returns the value of attribute last_tree_id.
-
#multiplex_id ⇒ Object
Returns the value of attribute multiplex_id.
-
#native_lm ⇒ Object
public read/write methods.
-
#native_os ⇒ Object
public read/write methods.
-
#peer_native_lm ⇒ Object
public read methods.
-
#peer_native_os ⇒ Object
public read methods.
-
#peer_require_signing ⇒ Object
Returns the value of attribute peer_require_signing.
-
#process_id ⇒ Object
Returns the value of attribute process_id.
-
#read_timeout ⇒ Object
public read/write methods.
-
#require_signing ⇒ Object
Returns the value of attribute require_signing.
-
#security_mode ⇒ Object
Returns the value of attribute security_mode.
-
#send_lm ⇒ Object
Returns the value of attribute send_lm.
-
#send_ntlm ⇒ Object
Returns the value of attribute send_ntlm.
-
#sequence_counter ⇒ Object
Returns the value of attribute sequence_counter.
-
#server_guid ⇒ Object
Returns the value of attribute server_guid.
-
#session_id ⇒ Object
public read methods.
-
#signing_key ⇒ Object
Returns the value of attribute signing_key.
-
#socket ⇒ Object
Returns the value of attribute socket.
-
#spnopt ⇒ Object
Returns the value of attribute spnopt.
-
#system_time ⇒ Object
Returns the value of attribute system_time.
-
#system_zone ⇒ Object
Returns the value of attribute system_zone.
-
#use_lanman_key ⇒ Object
Returns the value of attribute use_lanman_key.
-
#use_ntlmv2 ⇒ Object
Returns the value of attribute use_ntlmv2.
-
#usentlm2_session ⇒ Object
Returns the value of attribute usentlm2_session.
-
#verify_signature ⇒ Object
Returns the value of attribute verify_signature.
Instance Method Summary collapse
-
#close(file_id = self.last_file_id, tree_id = self.last_tree_id, do_recv = true) ⇒ Object
Closes an open file handle.
-
#create(filename, disposition = 1, impersonation = 2, do_recv = true) ⇒ Object
Creates a file or opens an existing pipe.
-
#create_directory(name) ⇒ Object
Creates a new directory on the mounted tree.
-
#create_pipe(filename, disposition = 1, impersonation = 2) ⇒ Object
Returns a SMB_CREATE_RES response for a given named pipe.
-
#delete(filename, tree_id = self.last_tree_id, do_recv = true) ⇒ Object
Deletes a file from a share.
-
#echo(do_recv = true) ⇒ Object
Send SMB echo request.
-
#file_search(current_path, regex, depth) ⇒ Object
Recursively search for files matching a regular expression.
-
#find_first(path) ⇒ Object
Enumerates a specific path on the mounted tree.
-
#find_next(sid, resume_key, last_filename) ⇒ Object
Supplements find_first if file/dir count exceeds max search count.
-
#initialize(socket) ⇒ Client
constructor
A new instance of Client.
-
#negotiate(smb_extended_security = true, do_recv = true) ⇒ Object
Negotiate a SMB dialect.
-
#nttrans(subcommand, param = '', body = '', setup_count = 0, setup_data = '', do_recv = true) ⇒ Object
Perform a nttransaction request using the specified subcommand, parameters, and data.
-
#nttrans_secondary(param = '', body = '', do_recv = true) ⇒ Object
Perform a nttransaction request using the specified subcommand, parameters, and data.
-
#open(filename, mode = 0x12, access = 0x42, do_recv = true) ⇒ Object
Opens an existing file or creates a new one.
- #queryfs(level) ⇒ Object
-
#queryfs_fs_attribute ⇒ Object
Obtains file system attribute information on the mounted tree.
-
#queryfs_fs_device ⇒ Object
Obtains file system device information on the mounted tree.
-
#queryfs_fs_size ⇒ Object
Obtains file system size information on the mounted tree.
-
#queryfs_fs_volume ⇒ Object
Obtains file system volume information on the mounted tree.
-
#queryfs_info_allocation ⇒ Object
Obtains allocation information on the mounted tree.
-
#queryfs_info_volume ⇒ Object
Obtains volume information on the mounted tree.
-
#read(file_id = self.last_file_id, offset = 0, data_length = 64000, do_recv = true) ⇒ Object
Reads data from an open file handle.
-
#session_request(name = '*SMBSERVER', do_recv = true) ⇒ Object
Request a SMB session over NetBIOS.
-
#session_setup(user = '', pass = '', domain = '', do_recv = true) ⇒ Object
Authenticate and establish a session.
-
#session_setup_clear(user = '', pass = '', domain = '', do_recv = true) ⇒ Object
Authenticate using clear-text passwords.
-
#session_setup_no_ntlmssp(user = '', pass = '', domain = '', do_recv = true) ⇒ Object
Authenticate without NTLMSSP.
-
#session_setup_no_ntlmssp_prehash(user, domain, hash_lm, hash_nt, do_recv = true) ⇒ Object
Authenticate without ntlmssp with a precomputed hash pair.
-
#session_setup_with_ntlmssp(user = '', pass = '', domain = '', name = nil, do_recv = true) ⇒ Object
Authenticate using extended security negotiation.
-
#session_setup_with_ntlmssp_blob(blob = '', do_recv = true, userid = 0) ⇒ Object
An exploit helper function for sending arbitrary SPNEGO blobs.
-
#session_setup_with_ntlmssp_temp(domain = '', name = nil, do_recv = true) ⇒ Object
Authenticate using extended security negotiation (NTLMSSP), but stop half-way, using the temporary ID.
-
#smb_defaults(packet) ⇒ Object
Set the SMB parameters to some reasonable defaults.
-
#smb_parse_close(pkt, data) ⇒ Object
Process incoming SMB_COM_CLOSE packets.
-
#smb_parse_create(pkt, data) ⇒ Object
Process incoming SMB_COM_NT_CREATE_ANDX packets.
-
#smb_parse_delete(pkt, data) ⇒ Object
Process incoming SMB_COM_DELETE packets.
-
#smb_parse_echo(pkt, data) ⇒ Object
Process incoming SMB_COM_ECHO packets.
-
#smb_parse_negotiate(pkt, data) ⇒ Object
Process incoming SMB_COM_NEGOTIATE packets.
-
#smb_parse_nttrans(pkt, data) ⇒ Object
Process incoming SMB_COM_NT_TRANSACT packets.
-
#smb_parse_open(pkt, data) ⇒ Object
Process incoming SMB_COM_OPEN_ANDX packets.
-
#smb_parse_read(pkt, data) ⇒ Object
Process incoming SMB_COM_READ_ANDX packets.
-
#smb_parse_session_setup(pkt, data) ⇒ Object
Process incoming SMB_COM_SESSION_SETUP_ANDX packets.
-
#smb_parse_trans(pkt, data) ⇒ Object
Process incoming SMB_COM_TRANSACTION packets.
-
#smb_parse_tree_connect(pkt, data) ⇒ Object
Process incoming SMB_COM_TREE_CONNECT_ANDX packets.
-
#smb_parse_tree_disconnect(pkt, data) ⇒ Object
Process incoming SMB_COM_TREE_DISCONNECT packets.
-
#smb_parse_write(pkt, data) ⇒ Object
Process incoming SMB_COM_WRITE_ANDX packets.
-
#smb_recv ⇒ Object
Read a SMB packet from the socket.
-
#smb_recv_and_cache ⇒ Object
Receive a full SMB reply and cache the parsed packet.
-
#smb_recv_cache_find_match(expected_type) ⇒ Object
Scan the packet receive cache for a matching response.
-
#smb_recv_parse(expected_type, ignore_errors = false) ⇒ Object
The main dispatcher for all incoming SMB packets.
-
#smb_send(data, evasion_level = 0) ⇒ Object
Send a SMB packet down the socket.
- #symlink(src, dst) ⇒ Object
-
#trans(pipe, param = '', body = '', setup_count = 0, setup_data = '', no_response = false, do_recv = true) ⇒ Object
Perform a transaction against a given pipe name.
-
#trans2(subcommand, param = '', body = '', do_recv = true) ⇒ Object
Perform a transaction2 request using the specified subcommand, parameters, and data.
-
#trans_mailslot(name, data = '') ⇒ Object
Perform a mailslot write over SMB Warning: This can kill srv.sys unless MS06-035 is applied.
-
#trans_maxzero(pipe, param = '', body = '', setup_count = 0, setup_data = '', no_response = false, do_recv = true, ignore_errors = false) ⇒ Object
Perform a transaction against a given pipe name Difference from trans: sets MaxParam/MaxData to zero This is required to trigger mailslot bug :-(.
-
#trans_named_pipe(file_id, data = '', no_response = nil) ⇒ Object
Perform a transaction against a named pipe.
-
#trans_nonull(pipe, param = '', body = '', setup_count = 0, setup_data = '', no_response = false, do_recv = true) ⇒ Object
Perform a transaction against a given pipe name (no null terminator).
-
#tree_connect(share = 'IPC$', pass = '', do_recv = true) ⇒ Object
Connect to a specified share with an optional password.
-
#tree_disconnect(tree_id = self.last_tree_id, do_recv = true) ⇒ Object
Disconnect from the current tree.
-
#write(file_id = self.last_file_id, offset = 0, data = '', do_recv = true) ⇒ Object
Writes data to an open file handle.
Constructor Details
#initialize(socket) ⇒ Client
Returns a new instance of Client.
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# File 'lib/rex/proto/smb/client.rb', line 23 def initialize(socket) self.socket = socket self.native_os = 'Windows 2000 2195' self.native_lm = 'Windows 2000 5.0' self.encrypt_passwords = true self.extended_security = false self.multiplex_id = rand(0xffff) self.process_id = rand(0xffff) self.read_timeout = 10 self.evasion_opts = { # Padding is performed between packet headers and data 'pad_data' => EVADE::EVASION_NONE, # File path padding is performed on all open/create calls 'pad_file' => EVADE::EVASION_NONE, # Modify the \PIPE\ string in trans_named_pipe calls 'obscure_trans_pipe' => EVADE::EVASION_NONE, } self.verify_signature = false self.use_ntlmv2 = false self.usentlm2_session = true self.send_lm = true self.use_lanman_key = false self.send_ntlm = true # Signing self.sequence_counter = 0 self.signing_key = '' self.require_signing = false self.peer_require_signing = false #Misc self.spnopt = {} self.default_max_buffer_size = 0xffdf end |
Instance Attribute Details
#auth_user ⇒ Object
Returns the value of attribute auth_user.
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# File 'lib/rex/proto/smb/client.rb', line 2084 def auth_user @auth_user end |
#auth_user_id ⇒ Object
Returns the value of attribute auth_user_id.
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# File 'lib/rex/proto/smb/client.rb', line 2084 def auth_user_id @auth_user_id end |
#challenge_key ⇒ Object
public read methods
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# File 'lib/rex/proto/smb/client.rb', line 2083 def challenge_key @challenge_key end |
#default_domain ⇒ Object
Returns the value of attribute default_domain.
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# File 'lib/rex/proto/smb/client.rb', line 2084 def default_domain @default_domain end |
#default_max_buffer_size ⇒ Object
Returns the value of attribute default_max_buffer_size.
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# File 'lib/rex/proto/smb/client.rb', line 2080 def default_max_buffer_size @default_max_buffer_size end |
#default_name ⇒ Object
Returns the value of attribute default_name.
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# File 'lib/rex/proto/smb/client.rb', line 2084 def default_name @default_name end |
#dialect ⇒ Object
public read methods
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# File 'lib/rex/proto/smb/client.rb', line 2083 def dialect @dialect end |
#dns_domain_name ⇒ Object
Returns the value of attribute dns_domain_name.
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# File 'lib/rex/proto/smb/client.rb', line 2086 def dns_domain_name @dns_domain_name end |
#dns_host_name ⇒ Object
Returns the value of attribute dns_host_name.
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# File 'lib/rex/proto/smb/client.rb', line 2086 def dns_host_name @dns_host_name end |
#encrypt_passwords ⇒ Object
public read/write methods
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# File 'lib/rex/proto/smb/client.rb', line 2076 def encrypt_passwords @encrypt_passwords end |
#evasion_opts ⇒ Object
public read/write methods
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# File 'lib/rex/proto/smb/client.rb', line 2076 def evasion_opts @evasion_opts end |
#extended_security ⇒ Object
public read/write methods
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# File 'lib/rex/proto/smb/client.rb', line 2076 def extended_security @extended_security end |
#last_file_id ⇒ Object
Returns the value of attribute last_file_id.
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# File 'lib/rex/proto/smb/client.rb', line 2085 def last_file_id @last_file_id end |
#last_search_id ⇒ Object
Returns the value of attribute last_search_id.
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# File 'lib/rex/proto/smb/client.rb', line 2085 def last_search_id @last_search_id end |
#last_tree_id ⇒ Object
Returns the value of attribute last_tree_id.
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# File 'lib/rex/proto/smb/client.rb', line 2085 def last_tree_id @last_tree_id end |
#multiplex_id ⇒ Object
Returns the value of attribute multiplex_id.
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# File 'lib/rex/proto/smb/client.rb', line 2085 def multiplex_id @multiplex_id end |
#native_lm ⇒ Object
public read/write methods
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# File 'lib/rex/proto/smb/client.rb', line 2076 def native_lm @native_lm end |
#native_os ⇒ Object
public read/write methods
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# File 'lib/rex/proto/smb/client.rb', line 2076 def native_os @native_os end |
#peer_native_lm ⇒ Object
public read methods
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# File 'lib/rex/proto/smb/client.rb', line 2083 def peer_native_lm @peer_native_lm end |
#peer_native_os ⇒ Object
public read methods
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# File 'lib/rex/proto/smb/client.rb', line 2083 def peer_native_os @peer_native_os end |
#peer_require_signing ⇒ Object
Returns the value of attribute peer_require_signing.
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# File 'lib/rex/proto/smb/client.rb', line 2088 def peer_require_signing @peer_require_signing end |
#process_id ⇒ Object
Returns the value of attribute process_id.
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# File 'lib/rex/proto/smb/client.rb', line 2085 def process_id @process_id end |
#read_timeout ⇒ Object
public read/write methods
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# File 'lib/rex/proto/smb/client.rb', line 2076 def read_timeout @read_timeout end |
#require_signing ⇒ Object
Returns the value of attribute require_signing.
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# File 'lib/rex/proto/smb/client.rb', line 2088 def require_signing @require_signing end |
#security_mode ⇒ Object
Returns the value of attribute security_mode.
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# File 'lib/rex/proto/smb/client.rb', line 2087 def security_mode @security_mode end |
#send_lm ⇒ Object
Returns the value of attribute send_lm.
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# File 'lib/rex/proto/smb/client.rb', line 2077 def send_lm @send_lm end |
#send_ntlm ⇒ Object
Returns the value of attribute send_ntlm.
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# File 'lib/rex/proto/smb/client.rb', line 2077 def send_ntlm @send_ntlm end |
#sequence_counter ⇒ Object
Returns the value of attribute sequence_counter.
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# File 'lib/rex/proto/smb/client.rb', line 2088 def sequence_counter @sequence_counter end |
#server_guid ⇒ Object
Returns the value of attribute server_guid.
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# File 'lib/rex/proto/smb/client.rb', line 2087 def server_guid @server_guid end |
#session_id ⇒ Object
public read methods
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# File 'lib/rex/proto/smb/client.rb', line 2083 def session_id @session_id end |
#signing_key ⇒ Object
Returns the value of attribute signing_key.
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# File 'lib/rex/proto/smb/client.rb', line 2088 def signing_key @signing_key end |
#socket ⇒ Object
Returns the value of attribute socket.
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# File 'lib/rex/proto/smb/client.rb', line 2098 def socket @socket end |
#spnopt ⇒ Object
Returns the value of attribute spnopt.
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# File 'lib/rex/proto/smb/client.rb', line 2079 def spnopt @spnopt end |
#system_time ⇒ Object
Returns the value of attribute system_time.
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# File 'lib/rex/proto/smb/client.rb', line 2078 def system_time @system_time end |
#system_zone ⇒ Object
Returns the value of attribute system_zone.
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# File 'lib/rex/proto/smb/client.rb', line 2078 def system_zone @system_zone end |
#use_lanman_key ⇒ Object
Returns the value of attribute use_lanman_key.
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# File 'lib/rex/proto/smb/client.rb', line 2077 def use_lanman_key @use_lanman_key end |
#use_ntlmv2 ⇒ Object
Returns the value of attribute use_ntlmv2.
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# File 'lib/rex/proto/smb/client.rb', line 2077 def use_ntlmv2 @use_ntlmv2 end |
#usentlm2_session ⇒ Object
Returns the value of attribute usentlm2_session.
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# File 'lib/rex/proto/smb/client.rb', line 2077 def usentlm2_session @usentlm2_session end |
#verify_signature ⇒ Object
Returns the value of attribute verify_signature.
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# File 'lib/rex/proto/smb/client.rb', line 2077 def verify_signature @verify_signature end |
Instance Method Details
#close(file_id = self.last_file_id, tree_id = self.last_tree_id, do_recv = true) ⇒ Object
Closes an open file handle
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# File 'lib/rex/proto/smb/client.rb', line 1281 def close(file_id = self.last_file_id, tree_id = self.last_tree_id, do_recv = true) pkt = CONST::SMB_CLOSE_PKT.make_struct self.smb_defaults(pkt['Payload']['SMB']) pkt['Payload']['SMB'].v['Command'] = CONST::SMB_COM_CLOSE pkt['Payload']['SMB'].v['Flags1'] = 0x18 if self.require_signing #ascii pkt['Payload']['SMB'].v['Flags2'] = 0x2807 else #ascii pkt['Payload']['SMB'].v['Flags2'] = 0x2801 end pkt['Payload']['SMB'].v['TreeID'] = tree_id pkt['Payload']['SMB'].v['WordCount'] = 3 pkt['Payload'].v['FileID'] = file_id pkt['Payload'].v['LastWrite'] = -1 ret = self.smb_send(pkt.to_s) return ret if not do_recv ack = self.smb_recv_parse(CONST::SMB_COM_CLOSE) return ack end |
#create(filename, disposition = 1, impersonation = 2, do_recv = true) ⇒ Object
Creates a file or opens an existing pipe
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# File 'lib/rex/proto/smb/client.rb', line 1172 def create(filename, disposition = 1, impersonation = 2, do_recv = true) pkt = CONST::SMB_CREATE_PKT.make_struct self.smb_defaults(pkt['Payload']['SMB']) pkt['Payload']['SMB'].v['Command'] = CONST::SMB_COM_NT_CREATE_ANDX pkt['Payload']['SMB'].v['Flags1'] = 0x18 if self.require_signing #ascii pkt['Payload']['SMB'].v['Flags2'] = 0x2807 else #ascii pkt['Payload']['SMB'].v['Flags2'] = 0x2801 end pkt['Payload']['SMB'].v['WordCount'] = 24 pkt['Payload'].v['AndX'] = 255 pkt['Payload'].v['FileNameLen'] = filename.length pkt['Payload'].v['CreateFlags'] = 0x16 pkt['Payload'].v['AccessMask'] = 0x02000000 # Maximum Allowed pkt['Payload'].v['ShareAccess'] = 7 pkt['Payload'].v['CreateOptions'] = 0 pkt['Payload'].v['Impersonation'] = impersonation pkt['Payload'].v['Disposition'] = disposition pkt['Payload'].v['Payload'] = filename + "\x00" ret = self.smb_send(pkt.to_s) return ret if not do_recv ack = self.smb_recv_parse(CONST::SMB_COM_NT_CREATE_ANDX) # Save off the FileID if (ack['Payload'].v['FileID'] > 0) self.last_file_id = ack['Payload'].v['FileID'] end return ack end |
#create_directory(name) ⇒ Object
Creates a new directory on the mounted tree
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# File 'lib/rex/proto/smb/client.rb', line 2044 def create_directory(name) parm = [0].pack('V') + name + "\x00" resp = trans2(CONST::TRANS2_CREATE_DIRECTORY, parm, '') resp end |
#create_pipe(filename, disposition = 1, impersonation = 2) ⇒ Object
Returns a SMB_CREATE_RES response for a given named pipe
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# File 'lib/rex/proto/smb/client.rb', line 1167 def create_pipe(filename, disposition = 1, impersonation = 2) self.create(filename) end |
#delete(filename, tree_id = self.last_tree_id, do_recv = true) ⇒ Object
Deletes a file from a share
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# File 'lib/rex/proto/smb/client.rb', line 1213 def delete(filename, tree_id = self.last_tree_id, do_recv = true) pkt = CONST::SMB_DELETE_PKT.make_struct self.smb_defaults(pkt['Payload']['SMB']) pkt['Payload']['SMB'].v['Command'] = CONST::SMB_COM_DELETE pkt['Payload']['SMB'].v['Flags1'] = 0x18 if self.require_signing #ascii pkt['Payload']['SMB'].v['Flags2'] = 0x2807 else #ascii pkt['Payload']['SMB'].v['Flags2'] = 0x2801 end pkt['Payload']['SMB'].v['TreeID'] = tree_id pkt['Payload']['SMB'].v['WordCount'] = 1 pkt['Payload'].v['SearchAttributes'] = 0x06 pkt['Payload'].v['BufferFormat'] = 4 pkt['Payload'].v['Payload'] = filename + "\x00" ret = self.smb_send(pkt.to_s) return ret if not do_recv ack = self.smb_recv_parse(CONST::SMB_COM_DELETE) return ack end |
#echo(do_recv = true) ⇒ Object
Send SMB echo request
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# File 'lib/rex/proto/smb/client.rb', line 2052 def echo(do_recv = true) pkt = CONST::SMB_ECHO_RES_PKT.make_struct self.smb_defaults(pkt['Payload']['SMB']) pkt['Payload']['SMB'].v['Command'] = CONST::SMB_COM_ECHO pkt['Payload']['SMB'].v['Flags1'] = 18 if self.require_signing pkt['Payload']['SMB'].v['Flags2'] = 0x2807 else pkt['Payload']['SMB'].v['Flags2'] = 0x2801 end pkt['Payload']['SMB'].v['TreeID'] = self.last_tree_id || 0xffff pkt['Payload']['SMB'].v['WordCount'] = 1 pkt['Payload'].v['EchoCount'] = 1 ret = self.smb_send(pkt.to_s) return ret if not do_recv return self.smb_recv_parse(CONST::SMB_COM_ECHO) end |
#file_search(current_path, regex, depth) ⇒ Object
Recursively search for files matching a regular expression
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# File 'lib/rex/proto/smb/client.rb', line 1997 def file_search(current_path, regex, depth) depth -= 1 return [] if depth < 0 results = find_first(current_path + "*") files = [] results.each_pair do |fname, finfo| # Skip current and parent directory results next if %W{. ..}.include?(fname) # Verify the results contain an attribute next unless finfo and finfo['attr'] if finfo['attr'] & CONST::SMB_EXT_FILE_ATTR_DIRECTORY == 0 # Add any matching files to our result set files << "#{current_path}#{fname}" if fname =~ regex else # Recurse into the discovery subdirectory for more files begin search_path = "#{current_path}#{fname}\\" file_search(search_path, regex, depth).each {|fn| files << fn } rescue Rex::Proto::SMB::Exceptions::ErrorCode => e # Ignore common errors related to permissions and non-files if %W{ STATUS_ACCESS_DENIED STATUS_NO_SUCH_FILE STATUS_OBJECT_NAME_NOT_FOUND STATUS_OBJECT_PATH_NOT_FOUND }.include? e.get_error(e.error_code) next end $stderr.puts [e, e.get_error(e.error_code), search_path] raise e end end end files.uniq end |
#find_first(path) ⇒ Object
Enumerates a specific path on the mounted tree
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# File 'lib/rex/proto/smb/client.rb', line 1886 def find_first(path) sid = nil files = { } parm = [ 26, # Search for ALL files 20, # Maximum search count 6, # Resume and Close on End of Search 260, # Level of interest 0, # Storage type is zero ].pack('vvvvV') + path + "\x00" resp = trans2(CONST::TRANS2_FIND_FIRST2, parm, '') search_next = 0 # Loop until we run out of results loop do pcnt = resp['Payload'].v['ParamCount'] dcnt = resp['Payload'].v['DataCount'] poff = resp['Payload'].v['ParamOffset'] doff = resp['Payload'].v['DataOffset'] # Get the raw packet bytes resp_rpkt = resp.to_s # Remove the NetBIOS header resp_rpkt.slice!(0, 4) resp_parm = resp_rpkt[poff, pcnt] resp_data = resp_rpkt[doff, dcnt] if search_next == 0 # search id, search count, end of search, error offset, last name offset sid, scnt, eos, eoff, loff = resp_parm.unpack('v5') else # FIND_NEXT doesn't return a SID scnt, eos, eoff, loff = resp_parm.unpack('v4') end didx = 0 while (didx < resp_data.length) info_buff = resp_data[didx, 70] break if info_buff.length != 70 info = info_buff.unpack( 'V'+ # Next Entry Offset 'V'+ # File Index 'VV'+ # Time Create 'VV'+ # Time Last Access 'VV'+ # Time Last Write 'VV'+ # Time Change 'VV'+ # End of File 'VV'+ # Allocation Size 'V'+ # File Attributes 'V'+ # File Name Length 'V'+ # Extended Attr List Length 'C'+ # Short File Name Length 'C' # Reserved ) name = resp_data[didx + 70 + 24, info[15]] # Verify that the filename was actually present break unless name # Key the file list minus any trailing nulls files[name.sub(/\x00+$/n, '')] = { 'type' => ( info[14] & CONST::SMB_EXT_FILE_ATTR_DIRECTORY == 0 ) ? 'F' : 'D', 'attr' => info[14], 'info' => info } break if info[0] == 0 didx += info[0] end last_search_id = sid last_offset = loff last_filename = name # Exit the search if we reached the end of our results break if (eos != 0 or last_search_id.nil? or last_offset.to_i == 0) # If we aren't at the end of the search, run find_next resp = find_next(last_search_id, last_offset, last_filename) # Flip bit so response params will parse correctly search_next = 1 end files end |
#find_next(sid, resume_key, last_filename) ⇒ Object
Supplements find_first if file/dir count exceeds max search count
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# File 'lib/rex/proto/smb/client.rb', line 1980 def find_next(sid, resume_key, last_filename) parm = [ sid, # Search ID 20, # Maximum search count (Size of 20 keeps response to 1 packet) 260, # Level of interest resume_key, # Resume key from previous (Last name offset) 6, # Close search if end of search ].pack('vvvVv') + last_filename.to_s + # Last filename returned from find_first or find_next "\x00" # Terminate the file name # Returns the FIND_NEXT2 response packet for parsing by the find_first function trans2(CONST::TRANS2_FIND_NEXT2, parm, '') end |
#negotiate(smb_extended_security = true, do_recv = true) ⇒ Object
Negotiate a SMB dialect
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# File 'lib/rex/proto/smb/client.rb', line 532 def negotiate(smb_extended_security=true, do_recv = true) dialects = ['LANMAN1.0', 'LM1.2X002' ] if (self.encrypt_passwords) dialects.push('NT LANMAN 1.0', 'NT LM 0.12') end data = dialects.collect { |dialect| "\x02" + dialect + "\x00" }.join('') pkt = CONST::SMB_NEG_PKT.make_struct self.smb_defaults(pkt['Payload']['SMB']) pkt['Payload']['SMB'].v['Command'] = CONST::SMB_COM_NEGOTIATE pkt['Payload']['SMB'].v['Flags1'] = 0x18 if(smb_extended_security) pkt['Payload']['SMB'].v['Flags2'] = 0x2801 else pkt['Payload']['SMB'].v['Flags2'] = 0xc001 end pkt['Payload'].v['Payload'] = data ret = self.smb_send(pkt.to_s, EVADE::EVASION_NONE) return ret if not do_recv ack = self.smb_recv_parse(CONST::SMB_COM_NEGOTIATE) idx = ack['Payload'].v['Dialect'] # Check for failed dialect selection if (idx < 0 or idx >= dialects.length) return nil end # Set the selected dialect self.dialect = dialects[idx] # Does the server support extended security negotiation? if (ack['Payload'].v['Capabilities'] & 0x80000000 != 0) self.extended_security = true end # Set the security mode self.security_mode = ack['Payload'].v['SecurityMode'] #set require_signing if (ack['Payload'].v['SecurityMode'] & 0x08 != 0) self.require_signing = true self.peer_require_signing = true end # Set the challenge key if (ack['Payload'].v['EncryptionKey'] != nil) self.challenge_key = ack['Payload'].v['EncryptionKey'] else # Handle Windows NT 4.0 responses if (ack['Payload'].v['KeyLength'] > 0) self.challenge_key = ack['Payload'].v['Payload'][0, ack['Payload'].v['KeyLength']] end end # Set the session identifier if (ack['Payload'].v['SessionKey'] != nil) self.session_id = ack['Payload'].v['SessionKey'] end # Extract the payload (GUID/SecurityBlob) buf = ack['Payload'].v['Payload'] || '' # Set the server GUID if (self.extended_security and buf.length >= 16) self.server_guid = buf[0,16] end # Set the server SecurityBlob if (self.extended_security and buf.length > 16) # buf[16, buf.length - 16] end # The number of 100-nanosecond intervals that have elapsed since January 1, 1601, in # Coordinated Universal Time (UTC) format. # We convert it to a friendly Time object here self.system_time = UTILS.time_smb_to_unix(ack['Payload'].v['SystemTimeHigh'],ack['Payload'].v['SystemTimeLow']) self.system_time = ::Time.at( self.system_time ) # A signed 16-bit signed integer that represents the server's time zone, in minutes, # from UTC. The time zone of the server MUST be expressed in minutes, plus or minus, # from UTC. # NOTE: although the spec says +/- it doesn't say that it should be inverted :-/ system_zone = ack['Payload'].v['ServerTimeZone'] # Convert the ServerTimeZone to _seconds_ and back into a signed integer :-/ if (system_zone & 0x8000) == 0x8000 system_zone = (( (~system_zone) & 0x0FFF ) + 1 ) else system_zone *= -1 end self.system_zone = system_zone * 60 return ack end |
#nttrans(subcommand, param = '', body = '', setup_count = 0, setup_data = '', do_recv = true) ⇒ Object
Perform a nttransaction request using the specified subcommand, parameters, and data
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# File 'lib/rex/proto/smb/client.rb', line 1685 def nttrans(subcommand, param = '', body = '', setup_count = 0, setup_data = '', do_recv = true) data = param + body pkt = CONST::SMB_NTTRANS_PKT.make_struct self.smb_defaults(pkt['Payload']['SMB']) base_offset = pkt.to_s.length + (setup_count * 2) - 4 param_offset = base_offset data_offset = param_offset + param.length pkt['Payload']['SMB'].v['Command'] = CONST::SMB_COM_NT_TRANSACT pkt['Payload']['SMB'].v['Flags1'] = 0x18 if self.require_signing #ascii pkt['Payload']['SMB'].v['Flags2'] = 0x2807 else #ascii pkt['Payload']['SMB'].v['Flags2'] = 0x2801 end pkt['Payload']['SMB'].v['WordCount'] = 19 + setup_count pkt['Payload'].v['ParamCountTotal'] = param.length pkt['Payload'].v['DataCountTotal'] = body.length pkt['Payload'].v['ParamCountMax'] = 1024 pkt['Payload'].v['DataCountMax'] = 65000 pkt['Payload'].v['ParamCount'] = param.length pkt['Payload'].v['ParamOffset'] = param_offset pkt['Payload'].v['DataCount'] = body.length pkt['Payload'].v['DataOffset'] = data_offset pkt['Payload'].v['SetupCount'] = setup_count pkt['Payload'].v['SetupData'] = setup_data pkt['Payload'].v['Subcommand'] = subcommand pkt['Payload'].v['Payload'] = data ret = self.smb_send(pkt.to_s) return ret if not do_recv ack = self.smb_recv_parse(CONST::SMB_COM_NT_TRANSACT) return ack end |
#nttrans_secondary(param = '', body = '', do_recv = true) ⇒ Object
Perform a nttransaction request using the specified subcommand, parameters, and data
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# File 'lib/rex/proto/smb/client.rb', line 1730 def nttrans_secondary(param = '', body = '', do_recv = true) data = param + body pkt = CONST::SMB_NTTRANS_SECONDARY_PKT.make_struct self.smb_defaults(pkt['Payload']['SMB']) base_offset = pkt.to_s.length - 4 param_offset = base_offset data_offset = param_offset + param.length pkt['Payload']['SMB'].v['Command'] = CONST::SMB_COM_NT_TRANSACT_SECONDARY pkt['Payload']['SMB'].v['Flags1'] = 0x18 if self.require_signing #ascii pkt['Payload']['SMB'].v['Flags2'] = 0x2807 else #ascii pkt['Payload']['SMB'].v['Flags2'] = 0x2801 end pkt['Payload']['SMB'].v['WordCount'] = 18 pkt['Payload'].v['ParamCountTotal'] = param.length pkt['Payload'].v['DataCountTotal'] = body.length pkt['Payload'].v['ParamCount'] = param.length pkt['Payload'].v['ParamOffset'] = param_offset pkt['Payload'].v['DataCount'] = body.length pkt['Payload'].v['DataOffset'] = data_offset pkt['Payload'].v['Payload'] = data ret = self.smb_send(pkt.to_s) return ret if not do_recv ack = self.smb_recv_parse(CONST::SMB_COM_NT_TRANSACT_SECONDARY) return ack end |
#open(filename, mode = 0x12, access = 0x42, do_recv = true) ⇒ Object
Opens an existing file or creates a new one
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# File 'lib/rex/proto/smb/client.rb', line 1244 def open(filename, mode = 0x12, access = 0x42, do_recv = true) pkt = CONST::SMB_OPEN_PKT.make_struct self.smb_defaults(pkt['Payload']['SMB']) pkt['Payload']['SMB'].v['Command'] = CONST::SMB_COM_OPEN_ANDX pkt['Payload']['SMB'].v['Flags1'] = 0x18 if self.require_signing #ascii pkt['Payload']['SMB'].v['Flags2'] = 0x2807 else #ascii pkt['Payload']['SMB'].v['Flags2'] = 0x2801 end pkt['Payload']['SMB'].v['WordCount'] = 15 pkt['Payload'].v['AndX'] = 255 pkt['Payload'].v['Access'] = access pkt['Payload'].v['SearchAttributes'] = 0x06 pkt['Payload'].v['OpenFunction'] = mode pkt['Payload'].v['Payload'] = filename + "\x00" ret = self.smb_send(pkt.to_s) return ret if not do_recv ack = self.smb_recv_parse(CONST::SMB_COM_OPEN_ANDX) # Save off the FileID if (ack['Payload'].v['FileID'] > 0) self.last_file_id = ack['Payload'].v['FileID'] end return ack end |
#queryfs(level) ⇒ Object
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# File 'lib/rex/proto/smb/client.rb', line 1769 def queryfs(level) parm = [level].pack('v') begin resp = trans2(CONST::TRANS2_QUERY_FS_INFO, parm, '') pcnt = resp['Payload'].v['ParamCount'] dcnt = resp['Payload'].v['DataCount'] poff = resp['Payload'].v['ParamOffset'] doff = resp['Payload'].v['DataOffset'] # Get the raw packet bytes resp_rpkt = resp.to_s # Remove the NetBIOS header resp_rpkt.slice!(0, 4) _resp_parm = resp_rpkt[poff, pcnt] resp_data = resp_rpkt[doff, dcnt] return resp_data rescue ::Exception raise $! end end |
#queryfs_fs_attribute ⇒ Object
Obtains file system attribute information on the mounted tree
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# File 'lib/rex/proto/smb/client.rb', line 1875 def queryfs_fs_attribute data = queryfs(CONST::SMB_QUERY_FS_ATTRIBUTE_INFO) vals = data.unpack('VVVA*') return { 'fs_attributes' => vals[0], 'max_file_name' => vals[1], 'fs_name' => vals[3][0, vals[2]].gsub("\x00", '') } end |
#queryfs_fs_device ⇒ Object
Obtains file system device information on the mounted tree
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# File 'lib/rex/proto/smb/client.rb', line 1865 def queryfs_fs_device data = queryfs(CONST::SMB_QUERY_FS_DEVICE_INFO) vals = data.unpack('VV') return { 'device_type' => vals[0], 'device_chars' => vals[1], } end |
#queryfs_fs_size ⇒ Object
Obtains file system size information on the mounted tree
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# File 'lib/rex/proto/smb/client.rb', line 1853 def queryfs_fs_size data = queryfs(CONST::SMB_QUERY_FS_SIZE_INFO) vals = data.unpack('VVVVVV') return { 'total_alloc_units' => (vals[1] << 32) + vals[0], 'total_free_units' => (vals[3] << 32) + vals[2], 'sectors_per_unit' => vals[4], 'bytes_per_sector' => vals[5] } end |
#queryfs_fs_volume ⇒ Object
Obtains file system volume information on the mounted tree
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# File 'lib/rex/proto/smb/client.rb', line 1842 def queryfs_fs_volume data = queryfs(CONST::SMB_QUERY_FS_VOLUME_INFO) vals = data.unpack('VVVVCCA*') return { 'create_time' => (vals[1] << 32) + vals[0], 'serial' => vals[2], 'label' => vals[6][0,vals[3]].gsub("\x00", '') } end |
#queryfs_info_allocation ⇒ Object
Obtains allocation information on the mounted tree
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# File 'lib/rex/proto/smb/client.rb', line 1822 def queryfs_info_allocation data = queryfs(CONST::SMB_INFO_ALLOCATION) head = %w{fs_id sectors_per_unit unit_total units_available bytes_per_sector} vals = data.unpack('VVVVv') info = { } head.each_index {|i| info[head[i]]=vals[i]} return info end |
#queryfs_info_volume ⇒ Object
Obtains volume information on the mounted tree
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# File 'lib/rex/proto/smb/client.rb', line 1832 def queryfs_info_volume data = queryfs(CONST::SMB_INFO_VOLUME) vals = data.unpack('VCA*') return { 'serial' => vals[0], 'label' => vals[2][0,vals[1]].gsub("\x00", '') } end |
#read(file_id = self.last_file_id, offset = 0, data_length = 64000, do_recv = true) ⇒ Object
Reads data from an open file handle
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# File 'lib/rex/proto/smb/client.rb', line 1352 def read(file_id = self.last_file_id, offset = 0, data_length = 64000, do_recv = true) pkt = CONST::SMB_READ_PKT.make_struct self.smb_defaults(pkt['Payload']['SMB']) pkt['Payload']['SMB'].v['Command'] = CONST::SMB_COM_READ_ANDX pkt['Payload']['SMB'].v['Flags1'] = 0x18 if self.require_signing #ascii pkt['Payload']['SMB'].v['Flags2'] = 0x2807 else #ascii pkt['Payload']['SMB'].v['Flags2'] = 0x2801 end pkt['Payload']['SMB'].v['WordCount'] = 10 pkt['Payload'].v['AndX'] = 255 pkt['Payload'].v['FileID'] = file_id pkt['Payload'].v['Offset'] = offset # pkt['Payload'].v['MaxCountHigh'] = (data_length / 65536).to_i pkt['Payload'].v['MaxCountLow'] = (data_length % 65536).to_i pkt['Payload'].v['MinCount'] = data_length pkt['Payload'].v['Reserved2'] = -1 ret = self.smb_send(pkt.to_s) return ret if not do_recv ack = self.smb_recv_parse(CONST::SMB_COM_READ_ANDX, true) err = ack['Payload']['SMB'].v['ErrorClass'] # Catch some non-fatal error codes if (err != 0 && err != CONST::SMB_ERROR_BUFFER_OVERFLOW) failure = XCEPT::ErrorCode.new failure.word_count = ack['Payload']['SMB'].v['WordCount'] failure.command = ack['Payload']['SMB'].v['Command'] failure.error_code = ack['Payload']['SMB'].v['ErrorClass'] raise failure end return ack end |
#session_request(name = '*SMBSERVER', do_recv = true) ⇒ Object
Request a SMB session over NetBIOS
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# File 'lib/rex/proto/smb/client.rb', line 503 def session_request(name = '*SMBSERVER', do_recv = true) name ||= '*SMBSERVER' data = '' data << "\x20" + UTILS.nbname_encode(name) + "\x00" data << "\x20" + CONST::NETBIOS_REDIR + "\x00" pkt = CONST::NBRAW_PKT.make_struct pkt.v['Type'] = 0x81 pkt['Payload'].v['Payload'] = data # Most SMB implementations can't handle this being fragmented ret = self.smb_send(pkt.to_s, EVADE::EVASION_NONE) return ret if not do_recv res = self.smb_recv ack = CONST::NBRAW_PKT.make_struct ack.from_s(res) if (ack.v['Type'] != 130) raise XCEPT::NetbiosSessionFailed end return ack end |
#session_setup(user = '', pass = '', domain = '', do_recv = true) ⇒ Object
Authenticate and establish a session
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# File 'lib/rex/proto/smb/client.rb', line 637 def session_setup(user='', pass='', domain='', do_recv=true) if (self.dialect =~ /^(NT LANMAN 1.0|NT LM 0.12)$/) if (self.challenge_key) return self.session_setup_no_ntlmssp(user, pass, domain, do_recv) end if ( self.extended_security ) return self.session_setup_with_ntlmssp(user, pass, domain, nil, do_recv) end end return self.session_setup_clear(user, pass, domain) end |
#session_setup_clear(user = '', pass = '', domain = '', do_recv = true) ⇒ Object
Authenticate using clear-text passwords
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# File 'lib/rex/proto/smb/client.rb', line 654 def session_setup_clear(user = '', pass = '', domain = '', do_recv = true) data = [ pass, user, domain, self.native_os, self.native_lm ].collect{ |a| a + "\x00" }.join(''); pkt = CONST::SMB_SETUP_LANMAN_PKT.make_struct self.smb_defaults(pkt['Payload']['SMB']) pkt['Payload']['SMB'].v['Command'] = CONST::SMB_COM_SESSION_SETUP_ANDX pkt['Payload']['SMB'].v['Flags1'] = 0x18 if self.require_signing #ascii pkt['Payload']['SMB'].v['Flags2'] = 0x2807 else #ascii pkt['Payload']['SMB'].v['Flags2'] = 0x2801 end pkt['Payload']['SMB'].v['WordCount'] = 10 pkt['Payload'].v['AndX'] = 255 pkt['Payload'].v['MaxBuff'] = self.default_max_buffer_size pkt['Payload'].v['MaxMPX'] = 2 pkt['Payload'].v['VCNum'] = 1 pkt['Payload'].v['PasswordLen'] = pass.length + 1 pkt['Payload'].v['Capabilities'] = 64 pkt['Payload'].v['SessionKey'] = self.session_id pkt['Payload'].v['Payload'] = data ret = self.smb_send(pkt.to_s) return ret if not do_recv ack = self.smb_recv_parse(CONST::SMB_COM_SESSION_SETUP_ANDX) if (ack['Payload'].v['Action'] != 1 and user.length > 0) self.auth_user = user end self.auth_user_id = ack['Payload']['SMB'].v['UserID'] info = ack['Payload'].v['Payload'].split(/\x00/n) self.peer_native_os = info[0] self.peer_native_lm = info[1] self.default_domain = info[2] return ack end |
#session_setup_no_ntlmssp(user = '', pass = '', domain = '', do_recv = true) ⇒ Object
Authenticate without NTLMSSP
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# File 'lib/rex/proto/smb/client.rb', line 701 def session_setup_no_ntlmssp(user = '', pass = '', domain = '', do_recv = true) # Requires a challenge key to have been seen during negotiation raise XCEPT::NTLM1MissingChallenge if not self.challenge_key # # We can not yet handle signing in this situation # But instead of throwing an exception,we will disable signing, continue and hope for the best. # #raise XCEPT::SigningError if self.require_signing self.require_signing = false if self.require_signing if NTLM_UTILS.is_pass_ntlm_hash?(pass) arglm = { :lm_hash => [ pass.upcase()[0,32] ].pack('H32'), :challenge => self.challenge_key } hash_lm = NTLM_CRYPT::lm_response(arglm) argntlm = { :ntlm_hash => [ pass.upcase()[33,65] ].pack('H32'), :challenge => self.challenge_key } hash_nt = NTLM_CRYPT::ntlm_response(argntlm) else hash_lm = pass.length > 0 ? NTLM_CRYPT.lanman_des(pass, self.challenge_key) : '' hash_nt = pass.length > 0 ? NTLM_CRYPT.ntlm_md4(pass, self.challenge_key) : '' end data = '' data << hash_lm data << hash_nt data << user + "\x00" data << domain + "\x00" data << self.native_os + "\x00" data << self.native_lm + "\x00" pkt = CONST::SMB_SETUP_NTLMV1_PKT.make_struct self.smb_defaults(pkt['Payload']['SMB']) pkt['Payload']['SMB'].v['Command'] = CONST::SMB_COM_SESSION_SETUP_ANDX pkt['Payload']['SMB'].v['Flags1'] = 0x18 pkt['Payload']['SMB'].v['Flags2'] = 0x2001 pkt['Payload']['SMB'].v['WordCount'] = 13 pkt['Payload'].v['AndX'] = 255 pkt['Payload'].v['MaxBuff'] = self.default_max_buffer_size pkt['Payload'].v['MaxMPX'] = 2 pkt['Payload'].v['VCNum'] = 1 pkt['Payload'].v['PasswordLenLM'] = hash_lm.length pkt['Payload'].v['PasswordLenNT'] = hash_nt.length pkt['Payload'].v['Capabilities'] = 64 pkt['Payload'].v['SessionKey'] = self.session_id pkt['Payload'].v['Payload'] = data ret = self.smb_send(pkt.to_s) return ret if not do_recv ack = self.smb_recv_parse(CONST::SMB_COM_SESSION_SETUP_ANDX) if (ack['Payload'].v['Action'] != 1 and user.length > 0) self.auth_user = user end self.auth_user_id = ack['Payload']['SMB'].v['UserID'] info = ack['Payload'].v['Payload'].split(/\x00/n) self.peer_native_os = info[0] self.peer_native_lm = info[1] # # if the PC belongs to a domain, this value is already populated # if it is not populated, we're in a workgroup and need to pupulate it now # if self.default_domain.nil? self.default_domain = info[2] end return ack end |
#session_setup_no_ntlmssp_prehash(user, domain, hash_lm, hash_nt, do_recv = true) ⇒ Object
Authenticate without ntlmssp with a precomputed hash pair
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# File 'lib/rex/proto/smb/client.rb', line 785 def session_setup_no_ntlmssp_prehash(user, domain, hash_lm, hash_nt, do_recv = true) data = '' data << hash_lm data << hash_nt data << user + "\x00" data << domain + "\x00" data << self.native_os + "\x00" data << self.native_lm + "\x00" pkt = CONST::SMB_SETUP_NTLMV1_PKT.make_struct self.smb_defaults(pkt['Payload']['SMB']) pkt['Payload']['SMB'].v['Command'] = CONST::SMB_COM_SESSION_SETUP_ANDX pkt['Payload']['SMB'].v['Flags1'] = 0x18 pkt['Payload']['SMB'].v['Flags2'] = 0x2001 pkt['Payload']['SMB'].v['WordCount'] = 13 pkt['Payload'].v['AndX'] = 255 pkt['Payload'].v['MaxBuff'] = self.default_max_buffer_size pkt['Payload'].v['MaxMPX'] = 2 pkt['Payload'].v['VCNum'] = 1 pkt['Payload'].v['PasswordLenLM'] = hash_lm.length pkt['Payload'].v['PasswordLenNT'] = hash_nt.length pkt['Payload'].v['Capabilities'] = 64 pkt['Payload'].v['SessionKey'] = self.session_id pkt['Payload'].v['Payload'] = data ret = self.smb_send(pkt.to_s) return ret if not do_recv ack = self.smb_recv_parse(CONST::SMB_COM_SESSION_SETUP_ANDX) if (ack['Payload'].v['Action'] != 1 and user.length > 0) self.auth_user = user end self.auth_user_id = ack['Payload']['SMB'].v['UserID'] info = ack['Payload'].v['Payload'].split(/\x00/n) self.peer_native_os = info[0] self.peer_native_lm = info[1] self.default_domain = info[2] return ack end |
#session_setup_with_ntlmssp(user = '', pass = '', domain = '', name = nil, do_recv = true) ⇒ Object
Authenticate using extended security negotiation
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# File 'lib/rex/proto/smb/client.rb', line 833 def session_setup_with_ntlmssp(user = '', pass = '', domain = '', name = nil, do_recv = true) = { :signing => self.require_signing, :usentlm2_session => self.usentlm2_session, :use_ntlmv2 => self.use_ntlmv2, :send_lm => self.send_lm, :send_ntlm => self.send_ntlm, :use_lanman_key => self.use_lanman_key } ntlmssp_flags = NTLM_UTILS.make_ntlm_flags() if (name == nil) name = Rex::Text.rand_text_alphanumeric(16) end @ntlm_client = Net::NTLM::Client.new( user, pass, workstation: name, domain: domain, flags: ntlmssp_flags ) blob = @ntlm_client.init_context.serialize native_data = '' native_data << self.native_os + "\x00" native_data << self.native_lm + "\x00" pkt = CONST::SMB_SETUP_NTLMV2_PKT.make_struct self.smb_defaults(pkt['Payload']['SMB']) pkt['Payload']['SMB'].v['Command'] = CONST::SMB_COM_SESSION_SETUP_ANDX pkt['Payload']['SMB'].v['Flags1'] = 0x18 if require_signing #ascii pkt['Payload']['SMB'].v['Flags2'] = 0x2807 else #ascii pkt['Payload']['SMB'].v['Flags2'] = 0x2801 end pkt['Payload']['SMB'].v['WordCount'] = 12 pkt['Payload'].v['AndX'] = 255 pkt['Payload'].v['MaxBuff'] = self.default_max_buffer_size pkt['Payload'].v['MaxMPX'] = 2 pkt['Payload'].v['VCNum'] = 1 pkt['Payload'].v['SecurityBlobLen'] = blob.length pkt['Payload'].v['Capabilities'] = 0x800000d4 pkt['Payload'].v['SessionKey'] = self.session_id pkt['Payload'].v['Payload'] = blob + native_data ret = self.smb_send(pkt.to_s) return ret if not do_recv ack = self.smb_recv_parse(CONST::SMB_COM_SESSION_SETUP_ANDX, true) # The server doesn't know about NTLM_NEGOTIATE if (ack['Payload']['SMB'].v['ErrorClass'] == 0x00020002) return session_setup_no_ntlmssp(user, pass, domain) end # Make sure the error code tells us to continue processing if (ack['Payload']['SMB'].v['ErrorClass'] != 0xc0000016) failure = XCEPT::ErrorCode.new failure.word_count = ack['Payload']['SMB'].v['WordCount'] failure.command = ack['Payload']['SMB'].v['Command'] failure.error_code = ack['Payload']['SMB'].v['ErrorClass'] raise failure end # Extract the SecurityBlob from the response data = ack['Payload'].v['Payload'] blob = data.slice!(0, ack['Payload'].v['SecurityBlobLen']) # Extract the native lanman and os strings info = data.split(/\x00/n) self.peer_native_os = info[0] self.peer_native_lm = info[1] # Save the temporary UserID for use in the next request temp_user_id = ack['Payload']['SMB'].v['UserID'] blob_data = NTLM_UTILS.parse_ntlm_type_2_blob(blob) #netbios name self.default_name = blob_data[:default_name] || '' #dns name self.dns_host_name = blob_data[:dns_host_name] || '' #dns domain if blob_data[:default_name] != blob_data[:default_domain] # We're in a domain; get the domain name now self.default_domain = blob_data[:default_domain] || '' else # We're in a workgroup; workgroup names come later in the handshake self.default_domain = nil end type3 = @ntlm_client.init_context([blob].pack('m')) type3_blob = type3.serialize self.signing_key = @ntlm_client.session_key # Ugh, it's private self.challenge_key = @ntlm_client.session.send(:server_challenge) pkt = CONST::SMB_SETUP_NTLMV2_PKT.make_struct self.smb_defaults(pkt['Payload']['SMB']) pkt['Payload']['SMB'].v['Command'] = CONST::SMB_COM_SESSION_SETUP_ANDX pkt['Payload']['SMB'].v['Flags1'] = 0x18 if self.require_signing #ascii pkt['Payload']['SMB'].v['Flags2'] = 0x2807 else #ascii pkt['Payload']['SMB'].v['Flags2'] = 0x2801 end pkt['Payload']['SMB'].v['WordCount'] = 12 pkt['Payload']['SMB'].v['UserID'] = temp_user_id pkt['Payload'].v['AndX'] = 255 pkt['Payload'].v['MaxBuff'] = self.default_max_buffer_size pkt['Payload'].v['MaxMPX'] = 2 pkt['Payload'].v['VCNum'] = 1 pkt['Payload'].v['Capabilities'] = 0x8000d05c pkt['Payload'].v['SessionKey'] = self.session_id pkt['Payload'].v['SecurityBlobLen'] = type3_blob.length pkt['Payload'].v['Payload'] = type3_blob + native_data # NOTE: if do_recv is set to false, we cant reach here... self.smb_send(pkt.to_s) ack = self.smb_recv_parse(CONST::SMB_COM_SESSION_SETUP_ANDX, true) # Make sure that authentication succeeded if (ack['Payload']['SMB'].v['ErrorClass'] != 0) if (user.length == 0) # Ensure that signing is disabled when we hit this corner case self.require_signing = false # Fall back to the non-ntlmssp authentication method return self.session_setup_no_ntlmssp(user, pass, domain) end failure = XCEPT::ErrorCode.new failure.word_count = ack['Payload']['SMB'].v['WordCount'] failure.command = ack['Payload']['SMB'].v['Command'] failure.error_code = ack['Payload']['SMB'].v['ErrorClass'] raise failure end self.auth_user_id = ack['Payload']['SMB'].v['UserID'] if (ack['Payload'].v['Action'] != 1 and user.length > 0) self.auth_user = user end return ack end |
#session_setup_with_ntlmssp_blob(blob = '', do_recv = true, userid = 0) ⇒ Object
An exploit helper function for sending arbitrary SPNEGO blobs
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# File 'lib/rex/proto/smb/client.rb', line 996 def session_setup_with_ntlmssp_blob(blob = '', do_recv = true, userid = 0) native_data = '' native_data << self.native_os + "\x00" native_data << self.native_lm + "\x00" pkt = CONST::SMB_SETUP_NTLMV2_PKT.make_struct self.smb_defaults(pkt['Payload']['SMB']) pkt['Payload']['SMB'].v['Command'] = CONST::SMB_COM_SESSION_SETUP_ANDX pkt['Payload']['SMB'].v['Flags1'] = 0x18 pkt['Payload']['SMB'].v['Flags2'] = 0x2801 pkt['Payload']['SMB'].v['WordCount'] = 12 pkt['Payload']['SMB'].v['UserID'] = userid pkt['Payload'].v['AndX'] = 255 pkt['Payload'].v['MaxBuff'] = self.default_max_buffer_size pkt['Payload'].v['MaxMPX'] = 2 pkt['Payload'].v['VCNum'] = 1 pkt['Payload'].v['SecurityBlobLen'] = blob.length pkt['Payload'].v['Capabilities'] = 0x8000d05c pkt['Payload'].v['SessionKey'] = self.session_id pkt['Payload'].v['Payload'] = blob + native_data ret = self.smb_send(pkt.to_s) return ret if not do_recv self.smb_recv_parse(CONST::SMB_COM_SESSION_SETUP_ANDX, false) end |
#session_setup_with_ntlmssp_temp(domain = '', name = nil, do_recv = true) ⇒ Object
Authenticate using extended security negotiation (NTLMSSP), but stop half-way, using the temporary ID
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# File 'lib/rex/proto/smb/client.rb', line 1026 def session_setup_with_ntlmssp_temp(domain = '', name = nil, do_recv = true) if (name == nil) name = Rex::Text.rand_text_alphanumeric(16) end blob = NTLM_UTILS.make_ntlmssp_secblob_init(domain, name) native_data = '' native_data << self.native_os + "\x00" native_data << self.native_lm + "\x00" pkt = CONST::SMB_SETUP_NTLMV2_PKT.make_struct self.smb_defaults(pkt['Payload']['SMB']) pkt['Payload']['SMB'].v['Command'] = CONST::SMB_COM_SESSION_SETUP_ANDX pkt['Payload']['SMB'].v['Flags1'] = 0x18 pkt['Payload']['SMB'].v['Flags2'] = 0x2801 pkt['Payload']['SMB'].v['WordCount'] = 12 pkt['Payload'].v['AndX'] = 255 pkt['Payload'].v['MaxBuff'] = self.default_max_buffer_size pkt['Payload'].v['MaxMPX'] = 2 pkt['Payload'].v['VCNum'] = 1 pkt['Payload'].v['SecurityBlobLen'] = blob.length pkt['Payload'].v['Capabilities'] = 0x8000d05c pkt['Payload'].v['SessionKey'] = self.session_id pkt['Payload'].v['Payload'] = blob + native_data ret = self.smb_send(pkt.to_s) return ret if not do_recv ack = self.smb_recv_parse(CONST::SMB_COM_SESSION_SETUP_ANDX, true) # The server doesn't know about NTLM_NEGOTIATE, try ntlmv1 if (ack['Payload']['SMB'].v['ErrorClass'] == 0x00020002) return session_setup_no_ntlmssp(user, pass, domain) end # Make sure the error code tells us to continue processing if (ack['Payload']['SMB'].v['ErrorClass'] != 0xc0000016) failure = XCEPT::ErrorCode.new failure.word_count = ack['Payload']['SMB'].v['WordCount'] failure.command = ack['Payload']['SMB'].v['Command'] failure.error_code = ack['Payload']['SMB'].v['ErrorClass'] raise failure end # Extract the SecurityBlob from the response data = ack['Payload'].v['Payload'] blob = data.slice!(0, ack['Payload'].v['SecurityBlobLen']) # Extract the native lanman and os strings info = data.split(/\x00/n) self.peer_native_os = info[0] self.peer_native_lm = info[1] # Save the temporary UserID for use in the next request self.auth_user_id = ack['Payload']['SMB'].v['UserID'] # Extract the NTLM challenge key the lazy way cidx = blob.index("NTLMSSP\x00\x02\x00\x00\x00") if (cidx == -1) raise XCEPT::NTLM2MissingChallenge end # Store the challenge key self.challenge_key = blob[cidx + 24, 8] return ack end |
#smb_defaults(packet) ⇒ Object
Set the SMB parameters to some reasonable defaults
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# File 'lib/rex/proto/smb/client.rb', line 140 def smb_defaults(packet) packet.v['MultiplexID'] = self.multiplex_id.to_i packet.v['TreeID'] = self.last_tree_id.to_i packet.v['UserID'] = self.auth_user_id.to_i packet.v['ProcessID'] = self.process_id.to_i end |
#smb_parse_close(pkt, data) ⇒ Object
Process incoming SMB_COM_CLOSE packets
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# File 'lib/rex/proto/smb/client.rb', line 466 def smb_parse_close(pkt, data) # Process SMB error responses if (pkt['Payload']['SMB'].v['WordCount'] == 0) return pkt end raise XCEPT::InvalidWordCount end |
#smb_parse_create(pkt, data) ⇒ Object
Process incoming SMB_COM_NT_CREATE_ANDX packets
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# File 'lib/rex/proto/smb/client.rb', line 355 def smb_parse_create(pkt, data) # Windows says 42, but Samba says 34, same structure :-/ if (pkt['Payload']['SMB'].v['WordCount'] == 42) res = CONST::SMB_CREATE_RES_PKT.make_struct res.from_s(data) return res end if (pkt['Payload']['SMB'].v['WordCount'] == 34) res = CONST::SMB_CREATE_RES_PKT.make_struct res.from_s(data) return res end # Process SMB error responses if (pkt['Payload']['SMB'].v['WordCount'] == 0) return pkt end raise XCEPT::InvalidWordCount end |
#smb_parse_delete(pkt, data) ⇒ Object
Process incoming SMB_COM_DELETE packets
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# File 'lib/rex/proto/smb/client.rb', line 477 def smb_parse_delete(pkt, data) # Process SMB error responses if (pkt['Payload']['SMB'].v['WordCount'] == 0) res = CONST::SMB_DELETE_RES_PKT.make_struct res.from_s(data) return res end raise XCEPT::InvalidWordCount end |
#smb_parse_echo(pkt, data) ⇒ Object
Process incoming SMB_COM_ECHO packets
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# File 'lib/rex/proto/smb/client.rb', line 490 def smb_parse_echo(pkt, data) # Process SMB error responses if (pkt['Payload']['SMB'].v['WordCount'] == 1) res = CONST::SMB_ECHO_RES_PKT.make_struct res.from_s(data) return res end raise XCEPT::InvalidWordCount end |
#smb_parse_negotiate(pkt, data) ⇒ Object
Process incoming SMB_COM_NEGOTIATE packets
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# File 'lib/rex/proto/smb/client.rb', line 270 def smb_parse_negotiate(pkt, data) #Process NTLM negotiate responses if (pkt['Payload']['SMB'].v['WordCount'] == 17) res = CONST::SMB_NEG_RES_NT_PKT.make_struct res.from_s(data) return res end # Process LANMAN negotiate responses if (pkt['Payload']['SMB'].v['WordCount'] == 13) res = CONST::SMB_NEG_RES_LM_PKT.make_struct res.from_s(data) return res end # Process ERROR negotiate responses if (pkt['Payload']['SMB'].v['WordCount'] == 1) res = CONST::SMB_NEG_RES_ERR_PKT.make_struct res.from_s(data) return res end # Process SMB error responses if (pkt['Payload']['SMB'].v['WordCount'] == 0) return pkt end raise XCEPT::InvalidWordCount end |
#smb_parse_nttrans(pkt, data) ⇒ Object
Process incoming SMB_COM_NT_TRANSACT packets
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# File 'lib/rex/proto/smb/client.rb', line 396 def smb_parse_nttrans(pkt, data) # Process SMB error responses if (pkt['Payload']['SMB'].v['WordCount'] == 0) return pkt end if (pkt['Payload']['SMB'].v['WordCount'] >= 18) res = CONST::SMB_NTTRANS_RES_PKT.make_struct res.from_s(data) return res end raise XCEPT::InvalidWordCount end |
#smb_parse_open(pkt, data) ⇒ Object
Process incoming SMB_COM_OPEN_ANDX packets
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# File 'lib/rex/proto/smb/client.rb', line 413 def smb_parse_open(pkt, data) # Process open responses if (pkt['Payload']['SMB'].v['WordCount'] == 15) res = CONST::SMB_OPEN_RES_PKT.make_struct res.from_s(data) return res end # Process SMB error responses if (pkt['Payload']['SMB'].v['WordCount'] == 0) return pkt end raise XCEPT::InvalidWordCount end |
#smb_parse_read(pkt, data) ⇒ Object
Process incoming SMB_COM_READ_ANDX packets
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# File 'lib/rex/proto/smb/client.rb', line 448 def smb_parse_read(pkt, data) # Process read responses if (pkt['Payload']['SMB'].v['WordCount'] == 12) res = CONST::SMB_READ_RES_PKT.make_struct res.from_s(data) return res end # Process SMB error responses if (pkt['Payload']['SMB'].v['WordCount'] == 0) return pkt end raise XCEPT::InvalidWordCount end |
#smb_parse_session_setup(pkt, data) ⇒ Object
Process incoming SMB_COM_SESSION_SETUP_ANDX packets
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# File 'lib/rex/proto/smb/client.rb', line 301 def smb_parse_session_setup(pkt, data) # Process NTLMSSP negotiate responses if (pkt['Payload']['SMB'].v['WordCount'] == 4) res = CONST::SMB_SETUP_NTLMV2_RES_PKT.make_struct res.from_s(data) return res end # Process LANMAN responses if (pkt['Payload']['SMB'].v['WordCount'] == 3) res = CONST::SMB_SETUP_RES_PKT.make_struct res.from_s(data) return res end # Process SMB error responses if (pkt['Payload']['SMB'].v['WordCount'] == 0) return pkt end raise XCEPT::InvalidWordCount end |
#smb_parse_trans(pkt, data) ⇒ Object
Process incoming SMB_COM_TRANSACTION packets
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# File 'lib/rex/proto/smb/client.rb', line 379 def smb_parse_trans(pkt, data) if (pkt['Payload']['SMB'].v['WordCount'] == 10) res = CONST::SMB_TRANS_RES_PKT.make_struct res.from_s(data) return res end # Process SMB error responses if (pkt['Payload']['SMB'].v['WordCount'] == 0) return pkt end raise XCEPT::InvalidWordCount end |
#smb_parse_tree_connect(pkt, data) ⇒ Object
Process incoming SMB_COM_TREE_CONNECT_ANDX packets
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# File 'lib/rex/proto/smb/client.rb', line 325 def smb_parse_tree_connect(pkt, data) if (pkt['Payload']['SMB'].v['WordCount'] == 3) res = CONST::SMB_TREE_CONN_RES_PKT.make_struct res.from_s(data) return res end # Process SMB error responses if (pkt['Payload']['SMB'].v['WordCount'] == 0) return pkt end raise XCEPT::InvalidWordCount end |
#smb_parse_tree_disconnect(pkt, data) ⇒ Object
Process incoming SMB_COM_TREE_DISCONNECT packets
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# File 'lib/rex/proto/smb/client.rb', line 342 def smb_parse_tree_disconnect(pkt, data) # Process SMB responses if (pkt['Payload']['SMB'].v['WordCount'] == 0) res = CONST::SMB_TREE_DISCONN_RES_PKT.make_struct res.from_s(data) return res end raise XCEPT::InvalidWordCount end |
#smb_parse_write(pkt, data) ⇒ Object
Process incoming SMB_COM_WRITE_ANDX packets
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# File 'lib/rex/proto/smb/client.rb', line 430 def smb_parse_write(pkt, data) # Process write responses if (pkt['Payload']['SMB'].v['WordCount'] == 6) res = CONST::SMB_WRITE_RES_PKT.make_struct res.from_s(data) return res end # Process SMB error responses if (pkt['Payload']['SMB'].v['WordCount'] == 0) return pkt end raise XCEPT::InvalidWordCount end |
#smb_recv ⇒ Object
Read a SMB packet from the socket
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# File 'lib/rex/proto/smb/client.rb', line 63 def smb_recv data = socket.timed_read(4, self.read_timeout) if (data.nil? or data.length < 4) raise XCEPT::NoReply end recv_len = data[2,2].unpack('n')[0] if (recv_len == 0) return data end recv_len += 4 while (data.length != recv_len) buff = '' begin buff << self.socket.timed_read(recv_len - data.length, self.read_timeout) rescue Timeout::Error rescue raise XCEPT::ReadPacket end if (buff.nil? or buff.length == 0) raise XCEPT::ReadPacket end data << buff end #signing if self.require_signing && self.signing_key != '' if self.verify_signature raise XCEPT::IncorrectSigningError if not CRYPT::is_signature_correct?(self.signing_key,self.sequence_counter,data) end self.sequence_counter += 1 end return data end |
#smb_recv_and_cache ⇒ Object
Receive a full SMB reply and cache the parsed packet
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# File 'lib/rex/proto/smb/client.rb', line 148 def smb_recv_and_cache @smb_recv_cache ||= [] # This will throw an exception if it fails to read the whole packet data = self.smb_recv pkt = CONST::SMB_BASE_PKT.make_struct pkt.from_s(data) # Store the received packet into the cache @smb_recv_cache << [ pkt, data, ::Time.now ] end |
#smb_recv_cache_find_match(expected_type) ⇒ Object
Scan the packet receive cache for a matching response
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# File 'lib/rex/proto/smb/client.rb', line 162 def smb_recv_cache_find_match(expected_type) clean = [] found = nil @smb_recv_cache.each do |cent| pkt, data, tstamp = cent # Return matching packets and mark for removal if pkt['Payload']['SMB'].v['Command'] == expected_type found = [pkt,data] clean << cent end # Purge any packets older than 5 minutes if ::Time.now.to_i - tstamp.to_i > 300 clean << cent end break if found end clean.each do |cent| @smb_recv_cache.delete(cent) end found end |
#smb_recv_parse(expected_type, ignore_errors = false) ⇒ Object
The main dispatcher for all incoming SMB packets
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# File 'lib/rex/proto/smb/client.rb', line 192 def smb_recv_parse(expected_type, ignore_errors = false) pkt = nil data = nil # This allows for some leeway when a previous response has not # been processed but a new request was sent. The old response # will eventually be timed out of the cache. 1.upto(3) do |attempt| smb_recv_and_cache pkt,data = smb_recv_cache_find_match(expected_type) break if pkt end begin case pkt['Payload']['SMB'].v['Command'] when CONST::SMB_COM_NEGOTIATE res = smb_parse_negotiate(pkt, data) when CONST::SMB_COM_SESSION_SETUP_ANDX res = smb_parse_session_setup(pkt, data) when CONST::SMB_COM_TREE_CONNECT_ANDX res = smb_parse_tree_connect(pkt, data) when CONST::SMB_COM_TREE_DISCONNECT res = smb_parse_tree_disconnect(pkt, data) when CONST::SMB_COM_NT_CREATE_ANDX res = smb_parse_create(pkt, data) when CONST::SMB_COM_TRANSACTION, CONST::SMB_COM_TRANSACTION2 res = smb_parse_trans(pkt, data) when CONST::SMB_COM_NT_TRANSACT res = smb_parse_nttrans(pkt, data) when CONST::SMB_COM_NT_TRANSACT_SECONDARY res = smb_parse_nttrans(pkt, data) when CONST::SMB_COM_OPEN_ANDX res = smb_parse_open(pkt, data) when CONST::SMB_COM_WRITE_ANDX res = smb_parse_write(pkt, data) when CONST::SMB_COM_READ_ANDX res = smb_parse_read(pkt, data) when CONST::SMB_COM_CLOSE res = smb_parse_close(pkt, data) when CONST::SMB_COM_DELETE res = smb_parse_delete(pkt, data) when CONST::SMB_COM_ECHO res = smb_parse_echo(pkt, data) else raise XCEPT::InvalidCommand end if (ignore_errors == false and pkt['Payload']['SMB'].v['ErrorClass'] != 0) raise XCEPT::ErrorCode end rescue XCEPT::InvalidWordCount, XCEPT::InvalidCommand, XCEPT::ErrorCode $!.word_count = pkt['Payload']['SMB'].v['WordCount'] $!.command = pkt['Payload']['SMB'].v['Command'] $!.error_code = pkt['Payload']['SMB'].v['ErrorClass'] raise $! end return res end |
#smb_send(data, evasion_level = 0) ⇒ Object
Send a SMB packet down the socket
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# File 'lib/rex/proto/smb/client.rb', line 108 def smb_send(data, evasion_level=0) # evasion_level is ignored, since real evasion happens # in the actual socket layer size = 0 wait = 0 #signing if self.require_signing && self.signing_key != '' data = CRYPT::sign_smb_packet(self.signing_key, self.sequence_counter, data) self.sequence_counter += 1 end begin # Just send the packet and return if (size == 0 or size >= data.length) return self.socket.put(data) end # Break the packet up into chunks and wait between them ret = 0 while ( (chunk = data.slice!(0, size)).length > 0 ) ret = self.socket.put(chunk) if (wait > 0) ::IO.select(nil, nil, nil, wait) end end return ret end end |
#symlink(src, dst) ⇒ Object
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# File 'lib/rex/proto/smb/client.rb', line 1795 def symlink(src,dst) parm = [513, 0x00000000].pack('vV') + src + "\x00" begin resp = trans2(CONST::TRANS2_SET_PATH_INFO, parm, dst + "\x00") pcnt = resp['Payload'].v['ParamCount'] dcnt = resp['Payload'].v['DataCount'] poff = resp['Payload'].v['ParamOffset'] doff = resp['Payload'].v['DataOffset'] # Get the raw packet bytes resp_rpkt = resp.to_s # Remove the NetBIOS header resp_rpkt.slice!(0, 4) _resp_parm = resp_rpkt[poff, pcnt] resp_data = resp_rpkt[doff, dcnt] return resp_data rescue ::Exception raise $! end end |
#trans(pipe, param = '', body = '', setup_count = 0, setup_data = '', no_response = false, do_recv = true) ⇒ Object
Perform a transaction against a given pipe name
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# File 'lib/rex/proto/smb/client.rb', line 1414 def trans(pipe, param = '', body = '', setup_count = 0, setup_data = '', no_response = false, do_recv = true) # Null-terminate the pipe parameter if needed if (pipe[-1,1] != "\x00") pipe << "\x00" end pkt = CONST::SMB_TRANS_PKT.make_struct self.smb_defaults(pkt['Payload']['SMB']) # Packets larger than mlen will cause XP SP2 to disconnect us ;-( mlen = 4200 # Figure out how much space is taken up by our current arguments xlen = pipe.length + param.length + body.length filler1 = '' filler2 = '' # Fill any available space depending on the evasion settings if (xlen < mlen) filler1 = EVADE.make_offset_filler(evasion_opts['pad_data'], (mlen-xlen)/2) filler2 = EVADE.make_offset_filler(evasion_opts['pad_data'], (mlen-xlen)/2) end # Squish the whole thing together data = pipe + filler1 + param + filler2 + body # Throw some form of a warning out? if (data.length > mlen) # XXX This call will more than likely fail :-( end # Calculate all of the offsets base_offset = pkt.to_s.length + (setup_count * 2) - 4 param_offset = base_offset + pipe.length + filler1.length data_offset = param_offset + filler2.length + param.length pkt['Payload']['SMB'].v['Command'] = CONST::SMB_COM_TRANSACTION pkt['Payload']['SMB'].v['Flags1'] = 0x18 if self.require_signing #ascii pkt['Payload']['SMB'].v['Flags2'] = 0x2807 else #ascii pkt['Payload']['SMB'].v['Flags2'] = 0x2801 end pkt['Payload']['SMB'].v['WordCount'] = 14 + setup_count pkt['Payload'].v['ParamCountTotal'] = param.length pkt['Payload'].v['DataCountTotal'] = body.length pkt['Payload'].v['ParamCountMax'] = 1024 pkt['Payload'].v['DataCountMax'] = 65000 pkt['Payload'].v['ParamCount'] = param.length pkt['Payload'].v['ParamOffset'] = param_offset pkt['Payload'].v['DataCount'] = body.length pkt['Payload'].v['DataOffset'] = data_offset pkt['Payload'].v['SetupCount'] = setup_count pkt['Payload'].v['SetupData'] = setup_data pkt['Payload'].v['Payload'] = data if no_response pkt['Payload'].v['Flags'] = 2 end ret = self.smb_send(pkt.to_s) return ret if no_response or not do_recv self.smb_recv_parse(CONST::SMB_COM_TRANSACTION) end |
#trans2(subcommand, param = '', body = '', do_recv = true) ⇒ Object
Perform a transaction2 request using the specified subcommand, parameters, and data
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# File 'lib/rex/proto/smb/client.rb', line 1636 def trans2(subcommand, param = '', body = '', do_recv = true) setup_count = 1 setup_data = [subcommand].pack('v') data = param + body pkt = CONST::SMB_TRANS2_PKT.make_struct self.smb_defaults(pkt['Payload']['SMB']) base_offset = pkt.to_s.length + (setup_count * 2) - 4 param_offset = base_offset data_offset = param_offset + param.length pkt['Payload']['SMB'].v['Command'] = CONST::SMB_COM_TRANSACTION2 pkt['Payload']['SMB'].v['Flags1'] = 0x18 if self.require_signing #ascii pkt['Payload']['SMB'].v['Flags2'] = 0x2807 else #ascii pkt['Payload']['SMB'].v['Flags2'] = 0x2801 end pkt['Payload']['SMB'].v['WordCount'] = 14 + setup_count pkt['Payload'].v['ParamCountTotal'] = param.length pkt['Payload'].v['DataCountTotal'] = body.length pkt['Payload'].v['ParamCountMax'] = 1024 pkt['Payload'].v['DataCountMax'] = 65000 pkt['Payload'].v['ParamCount'] = param.length pkt['Payload'].v['ParamOffset'] = param_offset pkt['Payload'].v['DataCount'] = body.length pkt['Payload'].v['DataOffset'] = data_offset pkt['Payload'].v['SetupCount'] = setup_count pkt['Payload'].v['SetupData'] = setup_data pkt['Payload'].v['Payload'] = data ret = self.smb_send(pkt.to_s) return ret if not do_recv ack = self.smb_recv_parse(CONST::SMB_COM_TRANSACTION2) return ack end |
#trans_mailslot(name, data = '') ⇒ Object
Perform a mailslot write over SMB Warning: This can kill srv.sys unless MS06-035 is applied
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# File 'lib/rex/proto/smb/client.rb', line 1405 def trans_mailslot (name, data = '') # Setup data must be: # Operation: 1 (write) # Priority: 0 # Class: Reliable self.trans_maxzero(name, '', data, 3, [1, 0, 1].pack('vvv'), true ) end |
#trans_maxzero(pipe, param = '', body = '', setup_count = 0, setup_data = '', no_response = false, do_recv = true, ignore_errors = false) ⇒ Object
Perform a transaction against a given pipe name Difference from trans: sets MaxParam/MaxData to zero This is required to trigger mailslot bug :-(
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# File 'lib/rex/proto/smb/client.rb', line 1492 def trans_maxzero(pipe, param = '', body = '', setup_count = 0, setup_data = '', no_response = false, do_recv = true, ignore_errors = false) # Null-terminate the pipe parameter if needed if (pipe[-1] != 0) pipe << "\x00" end pkt = CONST::SMB_TRANS_PKT.make_struct self.smb_defaults(pkt['Payload']['SMB']) # Packets larger than mlen will cause XP SP2 to disconnect us ;-( mlen = 4200 # Figure out how much space is taken up by our current arguments xlen = pipe.length + param.length + body.length filler1 = '' filler2 = '' # Fill any available space depending on the evasion settings if (xlen < mlen) filler1 = EVADE.make_offset_filler(evasion_opts['pad_data'], (mlen-xlen)/2) filler2 = EVADE.make_offset_filler(evasion_opts['pad_data'], (mlen-xlen)/2) end # Squish the whole thing together data = pipe + filler1 + param + filler2 + body # Throw some form of a warning out? if (data.length > mlen) # XXX This call will more than likely fail :-( end # Calculate all of the offsets base_offset = pkt.to_s.length + (setup_count * 2) - 4 param_offset = base_offset + pipe.length + filler1.length data_offset = param_offset + filler2.length + param.length pkt['Payload']['SMB'].v['Command'] = CONST::SMB_COM_TRANSACTION pkt['Payload']['SMB'].v['Flags1'] = 0x18 if self.require_signing #ascii pkt['Payload']['SMB'].v['Flags2'] = 0x2807 else #ascii pkt['Payload']['SMB'].v['Flags2'] = 0x2801 end pkt['Payload']['SMB'].v['WordCount'] = 14 + setup_count pkt['Payload'].v['ParamCountTotal'] = param.length pkt['Payload'].v['DataCountTotal'] = body.length pkt['Payload'].v['ParamCountMax'] = 0 pkt['Payload'].v['DataCountMax'] = 0 pkt['Payload'].v['ParamCount'] = param.length pkt['Payload'].v['ParamOffset'] = param_offset pkt['Payload'].v['DataCount'] = body.length pkt['Payload'].v['DataOffset'] = data_offset pkt['Payload'].v['SetupCount'] = setup_count pkt['Payload'].v['SetupData'] = setup_data pkt['Payload'].v['Payload'] = data if no_response pkt['Payload'].v['Flags'] = 2 end ret = self.smb_send(pkt.to_s) return ret if no_response or not do_recv self.smb_recv_parse(CONST::SMB_COM_TRANSACTION, ignore_errors) end |
#trans_named_pipe(file_id, data = '', no_response = nil) ⇒ Object
Perform a transaction against a named pipe
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# File 'lib/rex/proto/smb/client.rb', line 1398 def trans_named_pipe(file_id, data = '', no_response = nil) pipe = EVADE.make_trans_named_pipe_name(evasion_opts['pad_file']) self.trans(pipe, '', data, 2, [0x26, file_id].pack('vv'), no_response) end |
#trans_nonull(pipe, param = '', body = '', setup_count = 0, setup_data = '', no_response = false, do_recv = true) ⇒ Object
Perform a transaction against a given pipe name (no null terminator)
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# File 'lib/rex/proto/smb/client.rb', line 1567 def trans_nonull(pipe, param = '', body = '', setup_count = 0, setup_data = '', no_response = false, do_recv = true) pkt = CONST::SMB_TRANS_PKT.make_struct self.smb_defaults(pkt['Payload']['SMB']) # Packets larger than mlen will cause XP SP2 to disconnect us ;-( mlen = 4200 # Figure out how much space is taken up by our current arguments xlen = pipe.length + param.length + body.length filler1 = '' filler2 = '' # Fill any available space depending on the evasion settings if (xlen < mlen) filler1 = EVADE.make_offset_filler(evasion_opts['pad_data'], (mlen-xlen)/2) filler2 = EVADE.make_offset_filler(evasion_opts['pad_data'], (mlen-xlen)/2) end # Squish the whole thing together data = pipe + filler1 + param + filler2 + body # Throw some form of a warning out? if (data.length > mlen) # XXX This call will more than likely fail :-( end # Calculate all of the offsets base_offset = pkt.to_s.length + (setup_count * 2) - 4 param_offset = base_offset + pipe.length + filler1.length data_offset = param_offset + filler2.length + param.length pkt['Payload']['SMB'].v['Command'] = CONST::SMB_COM_TRANSACTION pkt['Payload']['SMB'].v['Flags1'] = 0x18 if self.require_signing #ascii pkt['Payload']['SMB'].v['Flags2'] = 0x2807 else #ascii pkt['Payload']['SMB'].v['Flags2'] = 0x2801 end pkt['Payload']['SMB'].v['WordCount'] = 14 + setup_count pkt['Payload'].v['ParamCountTotal'] = param.length pkt['Payload'].v['DataCountTotal'] = body.length pkt['Payload'].v['ParamCountMax'] = 0 pkt['Payload'].v['DataCountMax'] = 0 pkt['Payload'].v['ParamCount'] = param.length pkt['Payload'].v['ParamOffset'] = param_offset pkt['Payload'].v['DataCount'] = body.length pkt['Payload'].v['DataOffset'] = data_offset pkt['Payload'].v['SetupCount'] = setup_count pkt['Payload'].v['SetupData'] = setup_data pkt['Payload'].v['Payload'] = data if no_response pkt['Payload'].v['Flags'] = 2 end ret = self.smb_send(pkt.to_s) return ret if no_response or not do_recv self.smb_recv_parse(CONST::SMB_COM_TRANSACTION) end |
#tree_connect(share = 'IPC$', pass = '', do_recv = true) ⇒ Object
Connect to a specified share with an optional password
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# File 'lib/rex/proto/smb/client.rb', line 1099 def tree_connect(share = 'IPC$', pass = '', do_recv = true) data = [ pass, share, '?????' ].collect{ |a| a + "\x00" }.join(''); pkt = CONST::SMB_TREE_CONN_PKT.make_struct self.smb_defaults(pkt['Payload']['SMB']) pkt['Payload']['SMB'].v['TreeID'] = 0 pkt['Payload']['SMB'].v['Command'] = CONST::SMB_COM_TREE_CONNECT_ANDX pkt['Payload']['SMB'].v['Flags1'] = 0x18 if self.require_signing #ascii pkt['Payload']['SMB'].v['Flags2'] = 0x2807 else #ascii pkt['Payload']['SMB'].v['Flags2'] = 0x2801 end pkt['Payload']['SMB'].v['WordCount'] = 4 pkt['Payload'].v['AndX'] = 255 pkt['Payload'].v['PasswordLen'] = pass.length + 1 pkt['Payload'].v['Capabilities'] = 64 pkt['Payload'].v['Payload'] = data ret = self.smb_send(pkt.to_s) return ret if not do_recv ack = self.smb_recv_parse(CONST::SMB_COM_TREE_CONNECT_ANDX) self.last_tree_id = ack['Payload']['SMB'].v['TreeID'] # why bother? # info = ack['Payload'].v['Payload'].split(/\x00/) return ack end |
#tree_disconnect(tree_id = self.last_tree_id, do_recv = true) ⇒ Object
Disconnect from the current tree
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# File 'lib/rex/proto/smb/client.rb', line 1136 def tree_disconnect(tree_id = self.last_tree_id, do_recv = true) pkt = CONST::SMB_TREE_DISCONN_PKT.make_struct self.smb_defaults(pkt['Payload']['SMB']) pkt['Payload']['SMB'].v['Command'] = CONST::SMB_COM_TREE_DISCONNECT pkt['Payload']['SMB'].v['Flags1'] = 0x18 if self.require_signing #ascii pkt['Payload']['SMB'].v['Flags2'] = 0x2807 else #ascii pkt['Payload']['SMB'].v['Flags2'] = 0x2801 end pkt['Payload']['SMB'].v['WordCount'] = 0 pkt['Payload']['SMB'].v['TreeID'] = tree_id ret = self.smb_send(pkt.to_s) return ret if not do_recv ack = self.smb_recv_parse(CONST::SMB_COM_TREE_DISCONNECT) if (tree_id == self.last_tree_id) self.last_tree_id = 0 end return ack end |
#write(file_id = self.last_file_id, offset = 0, data = '', do_recv = true) ⇒ Object
Writes data to an open file handle
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# File 'lib/rex/proto/smb/client.rb', line 1311 def write(file_id = self.last_file_id, offset = 0, data = '', do_recv = true) pkt = CONST::SMB_WRITE_PKT.make_struct self.smb_defaults(pkt['Payload']['SMB']) data_offset = pkt.to_s.length - 4 filler = EVADE.make_offset_filler(evasion_opts['pad_data'], 4096 - data.length - data_offset) pkt['Payload']['SMB'].v['Command'] = CONST::SMB_COM_WRITE_ANDX pkt['Payload']['SMB'].v['Flags1'] = 0x18 if self.require_signing #ascii pkt['Payload']['SMB'].v['Flags2'] = 0x2805 else #ascii pkt['Payload']['SMB'].v['Flags2'] = 0x2801 end pkt['Payload']['SMB'].v['WordCount'] = 14 pkt['Payload'].v['AndX'] = 255 pkt['Payload'].v['FileID'] = file_id pkt['Payload'].v['Offset'] = offset pkt['Payload'].v['Reserved2'] = -1 pkt['Payload'].v['WriteMode'] = 8 pkt['Payload'].v['Remaining'] = data.length # pkt['Payload'].v['DataLenHigh'] = (data.length / 65536).to_i pkt['Payload'].v['DataLenLow'] = (data.length % 65536).to_i pkt['Payload'].v['DataOffset'] = data_offset + filler.length pkt['Payload'].v['Payload'] = filler + data ret = self.smb_send(pkt.to_s) return ret if not do_recv ack = self.smb_recv_parse(CONST::SMB_COM_WRITE_ANDX) return ack end |