Class: Rex::Proto::SMB::Client

Inherits:
Object
  • Object
show all
Defined in:
lib/rex/proto/smb/client.rb

Defined Under Namespace

Classes: UnitTest

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

Instance Method Summary collapse

Constructor Details

#initialize(socket) ⇒ Client

Returns a new instance of Client.



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# File 'lib/rex/proto/smb/client.rb', line 28

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
	
	#Misc
	self.spnopt = {}
	
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 1930

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 1930

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 1929

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 1930

def default_domain
  @default_domain
end

#default_name ⇒ Object

Returns the value of attribute default_name.



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# File 'lib/rex/proto/smb/client.rb', line 1930

def default_name
  @default_name
end

#dialect ⇒ Object

public read methods



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# File 'lib/rex/proto/smb/client.rb', line 1929

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 1932

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 1932

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 1922

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 1922

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 1922

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 1931

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 1931

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 1931

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 1931

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 1922

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 1922

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 1929

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 1929

def peer_native_os
  @peer_native_os
end

#process_id ⇒ Object

Returns the value of attribute process_id.



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# File 'lib/rex/proto/smb/client.rb', line 1931

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 1922

def read_timeout
  @read_timeout
end

#require_signing ⇒ Object

signing related



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# File 'lib/rex/proto/smb/client.rb', line 1935

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 1933

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 1923

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 1923

def send_ntlm
  @send_ntlm
end

#sequence_counter ⇒ Object

signing related



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# File 'lib/rex/proto/smb/client.rb', line 1935

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 1933

def server_guid
  @server_guid
end

#session_id ⇒ Object

public read methods



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# File 'lib/rex/proto/smb/client.rb', line 1929

def session_id
  @session_id
end

#signing_key ⇒ Object

signing related



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# File 'lib/rex/proto/smb/client.rb', line 1935

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 1946

def socket
  @socket
end

#spnopt ⇒ Object

misc



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# File 'lib/rex/proto/smb/client.rb', line 1926

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 1924

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 1924

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 1923

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 1923

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 1923

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 1923

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 1223

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 1114

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 1915

def create_directory(name)
	files = { }
	parm = [0].pack('V') + name + "\x00"
	resp = trans2(CONST::TRANS2_CREATE_DIRECTORY, parm, '')
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 1109

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 1155

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

#find_first(path) ⇒ Object

Enumerates a specific path on the mounted tree



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# File 'lib/rex/proto/smb/client.rb', line 1828

def find_first(path)
	files = { }
	parm = [
		26,  # Search for ALL files
		512, # Maximum search count
		6,   # Resume and Close on End of Search
		260, # Level of interest
		0,   # Storage type is zero
	].pack('vvvvV') + path + "\x00"

	begin
		resp = trans2(CONST::TRANS2_FIND_FIRST2, 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]

		# search id, search count, end of search, error offset, last name offset
		sid, scnt, eos, eoff, loff = resp_parm.unpack('v5')

		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]].sub!(/\x00+$/, '')
			files[name] =
			{
				'type' => (info[14] & 0x10) ? 'D' : 'F',
				'attr' => info[14],
				'info' => info
			}

			break if info[0] == 0
			didx += info[0]
		end

		last_search_id = sid

	rescue ::Exception
		raise $!
	end

	return files
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 477

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
	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: althought 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 1627

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'] = 65504
	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 1672

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 1186

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 1711

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 1817

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 1807

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 1795

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 1784

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 1764

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 1774

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 1294

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 448

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(*args) ⇒ Object

Authenticate and establish a session



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# File 'lib/rex/proto/smb/client.rb', line 581

def session_setup(*args)

	if (self.dialect =~ /^(NT LANMAN 1.0|NT LM 0.12)$/)
		
		if (self.challenge_key)
			return self.session_setup_no_ntlmssp(*args)
		end

		if ( self.extended_security )
			return self.session_setup_with_ntlmssp(*args)
		end

	end

	return self.session_setup_clear(*args)
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 599

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'] = 0xffdf
	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/)
	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

Raises:



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# File 'lib/rex/proto/smb/client.rb', line 646

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'] = 0xffdf
	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/)

	self.peer_native_os = info[0]
	self.peer_native_lm = info[1]
	self.default_domain = info[2]

	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 724

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'] = 0xffdf
	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/)

	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 772

def session_setup_with_ntlmssp(user = '', pass = '', domain = '', name = nil, do_recv = true)

	ntlm_options = {
			: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(ntlm_options)

	if (name == nil)
		name = Rex::Text.rand_text_alphanumeric(16)
	end

	blob = NTLM_UTILS.make_ntlmssp_secblob_init(domain, name, ntlmssp_flags)

	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'] = 0xffdf
	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/)
	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']

	# Get default data
	blob_data = NTLM_UTILS.parse_ntlm_type_2_blob(blob)
	self.challenge_key = blob_data[:challenge_key]
	server_ntlmssp_flags = blob_data[:server_ntlmssp_flags] #else should raise an error
	#netbios name
	self.default_name =  blob_data[:default_name] || ''
	#netbios domain
	self.default_domain = blob_data[:default_domain] || ''
	#dns name
	self.dns_host_name =  blob_data[:dns_host_name] || ''
	#dns domain
	self.dns_domain_name =  blob_data[:dns_domain_name] || ''
	#Client time
	chall_MsvAvTimestamp = blob_data[:chall_MsvAvTimestamp] || ''


	resp_lm, resp_ntlm, client_challenge, ntlm_cli_challenge = NTLM_UTILS.create_lm_ntlm_responses(user, pass, self.challenge_key, domain,
											default_name, default_domain, dns_host_name,
											dns_domain_name, chall_MsvAvTimestamp , 
											self.spnopt, ntlm_options)
	enc_session_key = ''
	self.sequence_counter = 0

	if self.require_signing
		self.signing_key, enc_session_key, ntlmssp_flags = NTLM_UTILS.create_session_key(ntlmssp_flags, server_ntlmssp_flags, user, pass, domain, 
										self.challenge_key, client_challenge, ntlm_cli_challenge, 
										ntlm_options)
	end
	
	# Create the security blob data
	blob = NTLM_UTILS.make_ntlmssp_secblob_auth(domain, name, user, resp_lm, resp_ntlm, enc_session_key, ntlmssp_flags)

	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'] = 0xffdf
	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'] = blob.length
	pkt['Payload'].v['Payload'] = 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) ⇒ Object

An exploit helper function for sending arbitrary SPNEGO blobs



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# File 'lib/rex/proto/smb/client.rb', line 939

def session_setup_with_ntlmssp_blob(blob = '', do_recv = true)
	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'] = 0
	pkt['Payload'].v['AndX'] = 255
	pkt['Payload'].v['MaxBuff'] = 0xffdf
	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 969

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'] = 0xffdf
	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/)
	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 145

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

Raises:



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# File 'lib/rex/proto/smb/client.rb', line 424

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

Raises:



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# File 'lib/rex/proto/smb/client.rb', line 313

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

Raises:



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# File 'lib/rex/proto/smb/client.rb', line 435

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_negotiate(pkt, data) ⇒ Object

Process incoming SMB_COM_NEGOTIATE packets

Raises:



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# File 'lib/rex/proto/smb/client.rb', line 228

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

Raises:



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# File 'lib/rex/proto/smb/client.rb', line 354

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

Raises:



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# File 'lib/rex/proto/smb/client.rb', line 371

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

Raises:



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# File 'lib/rex/proto/smb/client.rb', line 406

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

Raises:



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# File 'lib/rex/proto/smb/client.rb', line 259

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

Raises:



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# File 'lib/rex/proto/smb/client.rb', line 337

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

Raises:



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# File 'lib/rex/proto/smb/client.rb', line 283

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

Raises:



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# File 'lib/rex/proto/smb/client.rb', line 300

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

Raises:



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# File 'lib/rex/proto/smb/client.rb', line 388

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 67

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_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 154

def smb_recv_parse(expected_type, ignore_errors = false)

	# 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)
	res  = pkt
	
	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)

			else
				raise XCEPT::InvalidCommand
		end

		if (pkt['Payload']['SMB'].v['Command'] != expected_type)
			raise XCEPT::InvalidType
		end

		if (ignore_errors == false and pkt['Payload']['SMB'].v['ErrorClass'] != 0)
			raise XCEPT::ErrorCode
		end

	rescue XCEPT::InvalidWordCount, XCEPT::InvalidCommand, XCEPT::InvalidType, 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 112

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 1737

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 1356

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'] = 65504
	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 1578

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'] = 65504
	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 1347

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) ⇒ 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 1434

def trans_maxzero(pipe, param = '', body = '', setup_count = 0, setup_data = '', no_response = false, do_recv = true)

	# 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)
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 1340

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 1509

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 1042

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['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 1078

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 1253

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