Module: Msf::Exploit::Remote::SMB::Server::Share::InformationLevel::Query

Included in:
Msf::Exploit::Remote::SMB::Server::Share
Defined in:
lib/msf/core/exploit/remote/smb/server/share/information_level/query.rb

Instance Method Summary collapse

Instance Method Details

#send_info_basic_res(c, opts = {}) ⇒ Integer

Builds and sends an TRANS2_QUERY_PATH_INFORMATION response with SMB_QUERY_FILE_BASIC_INFO information level.

Parameters:

  • c (Socket) —

    The client to answer.

  • opts (Hash{Symbol => <Integer, String>}) (defaults to: {}) —

    Response custom values.

Options Hash (opts):

  • :file_attributes (Integer) —

    The extended file attributes of the file.

Returns:

  • (Integer) —

    The number of bytes returned to the client as response.


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# File 'lib/msf/core/exploit/remote/smb/server/share/information_level/query.rb', line 128

def send_info_basic_res(c, opts = {})
  file_attributes = opts[:file_attributes] || 0

  trans2_params = CONST::SMB_TRANS2_QUERY_PATH_INFORMATION_RES_PARAMETERS.make_struct
  trans2_params.v['EaErrorOffset'] = 0

  query_path_info = CONST::SMB_QUERY_FILE_BASIC_INFO_HDR.make_struct
  query_path_info.v['loCreationTime'] = lo
  query_path_info.v['hiCreationTime'] = hi
  query_path_info.v['loLastAccessTime'] = lo
  query_path_info.v['hiLastAccessTime'] = hi
  query_path_info.v['loLastWriteTime'] = lo
  query_path_info.v['hiLastWriteTime'] = hi
  query_path_info.v['loLastChangeTime'] = lo
  query_path_info.v['hiLastChangeTime'] = hi
  query_path_info.v['ExtFileAttributes'] = file_attributes

  send_trans2_res(c, trans2_params, query_path_info)
end

#send_info_network_res(c, opts = {}) ⇒ Integer

Builds and sends an TRANS2_QUERY_PATH_INFORMATION response with SMB_QUERY_FILE_NETWORK_INFO information level.

Parameters:

  • c (Socket) —

    The client to answer.

  • opts (Hash{Symbol => <Integer, String>}) (defaults to: {}) —

    Response custom values.

Options Hash (opts):

  • :allocation_size (Integer) —

    The number of bytes that are allocated to the file.

  • :end_of_file (Integer) —

    The offset from the start to the end of the file.

  • :file_attributes (Integer) —

    The file attributes.

Returns:

  • (Integer) —

    The number of bytes returned to the client as response.


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# File 'lib/msf/core/exploit/remote/smb/server/share/information_level/query.rb', line 188

def send_info_network_res(c, opts= {})
  allocation_size = opts[:allocation_size] || 0
  end_of_file = opts[:end_of_file] || 0
  file_attributes = opts[:file_attributes] || 0

  pkt = CONST::SMB_TRANS_RES_PKT.make_struct
  smb_set_defaults(c, pkt)

  trans2_params = CONST::SMB_TRANS2_QUERY_PATH_INFORMATION_RES_PARAMETERS.make_struct
  trans2_params.v['EaErrorOffset'] = 0

  query_path_info = CONST::SMB_QUERY_FILE_NETWORK_INFO_HDR.make_struct
  query_path_info.v['loCreationTime'] = lo
  query_path_info.v['hiCreationTime'] = hi
  query_path_info.v['loLastAccessTime'] = lo
  query_path_info.v['hiLastAccessTime'] = hi
  query_path_info.v['loLastWriteTime'] = lo
  query_path_info.v['hiLastWriteTime'] = hi
  query_path_info.v['loLastChangeTime'] = lo
  query_path_info.v['hiLastChangeTime'] = hi
  query_path_info.v['AllocationSize'] = allocation_size
  query_path_info.v['EndOfFile'] = end_of_file
  query_path_info.v['ExtFileAttributes'] = file_attributes

  send_trans2_res(c, trans2_params, query_path_info)
end

#send_info_standard_res(c, opts = {}) ⇒ Integer

Builds and sends an TRANS2_QUERY_PATH_INFORMATION response with SMB_QUERY_FILE_STANDARD_INFO information level.

Parameters:

  • c (Socket) —

    The client to answer.

  • opts (Hash{Symbol => <Integer, String>}) (defaults to: {}) —

    Response custom values.

Options Hash (opts):

  • :allocation_size (Integer) —

    The number of bytes that are allocated to the file.

  • :number_links (Integer) —

    The number of hard links to the file.

  • :delete_pending (Integer) —

    Indicates whether there is a delete action pending for the file.

  • :directory (Integer) —

    Indicates whether the file is a directory.

  • :end_of_file (Integer) —

    The offset from the start to the end of the file.

Returns:

  • (Integer) —

    The number of bytes returned to the client as response.


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# File 'lib/msf/core/exploit/remote/smb/server/share/information_level/query.rb', line 159

def send_info_standard_res(c, opts = {})
  allocation_size = opts[:allocation_size] || 0
  number_links = opts[:number_links] || 0
  delete_pending = opts[:delete_pending] || 0
  directory = opts[:directory] || 0
  end_of_file = opts[:end_of_file] || 0

  trans2_params = CONST::SMB_TRANS2_QUERY_PATH_INFORMATION_RES_PARAMETERS.make_struct
  trans2_params.v['EaErrorOffset'] = 0

  query_path_info = CONST::SMB_QUERY_FILE_STANDARD_INFO_HDR.make_struct
  query_path_info.v['AllocationSize'] = allocation_size
  query_path_info.v['EndOfFile'] = end_of_file
  query_path_info.v['NumberOfLinks'] = number_links
  query_path_info.v['DeletePending'] = delete_pending
  query_path_info.v['Directory'] = directory

  send_trans2_res(c, trans2_params, query_path_info)
end

#smb_cmd_trans_query_file_info_basic(c, fid) ⇒ Integer

Handles a TRANS2_QUERY_FILE_INFORMATION transaction request with SMB_QUERY_FILE_BASIC_INFO Information Level.

Parameters:

  • c (Socket) —

    The client sending the request.

  • fid (Integer) —

    The file identifier which the client is requesting info from.

Returns:

  • (Integer) —

    The number of bytes returned to the client as response.


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# File 'lib/msf/core/exploit/remote/smb/server/share/information_level/query.rb', line 15

def smb_cmd_trans_query_file_info_basic(c, fid)
  smb = @state[c]

  if fid == smb[:file_id].to_i
    attrib = CONST::SMB_EXT_FILE_ATTR_NORMAL
  elsif fid.nil? || fid == 0 || fid == smb[:dir_id].to_i # empty fid
    attrib = CONST::SMB_EXT_FILE_ATTR_DIRECTORY
  else
    return smb_error(CONST::SMB_COM_TRANSACTION2, c, CONST::SMB_STATUS_OBJECT_NAME_NOT_FOUND, true)
  end

  send_info_basic_res(c, { file_attributes: attrib })
end

#smb_cmd_trans_query_file_info_standard(c, fid) ⇒ Integer

Handles a TRANS2_QUERY_FILE_INFORMATION transaction request with SMB_QUERY_FILE_STANDARD_INFO Information Level.

Parameters:

  • c (Socket) —

    The client sending the request.

  • fid (Integer) —

    The file identifier which the client is requesting info from.

Returns:

  • (Integer) —

    The number of bytes returned to the client as response.


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# File 'lib/msf/core/exploit/remote/smb/server/share/information_level/query.rb', line 35

def smb_cmd_trans_query_file_info_standard(c, fid)
  contents = get_file_contents(client: c)

  send_info_standard_res(c, {
    allocation_size: 1048576,
    number_links: 1,
    delete_pending: 0,
    directory: 0,
    end_of_file: contents.length
  })
end

#smb_cmd_trans_query_path_info_basic(c, path) ⇒ Integer

Handles a TRANS2_QUERY_PATH_INFORMATION transaction request with SMB_QUERY_FILE_BASIC_INFO Information Level.

Parameters:

  • c (Socket) —

    The client sending the request.

  • path (String) —

    The path which the client is requesting info from.

Returns:

  • (Integer) —

    The number of bytes returned to the client as response.


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# File 'lib/msf/core/exploit/remote/smb/server/share/information_level/query.rb', line 53

def smb_cmd_trans_query_path_info_basic(c, path)
  if path && path.ends_with?(file_name.downcase)
    attrib = CONST::SMB_EXT_FILE_ATTR_NORMAL
  elsif path && folder_name && path.ends_with?(folder_name.downcase)
    attrib = CONST::SMB_EXT_FILE_ATTR_DIRECTORY
  elsif path.nil? || path.empty? || path == "\x00" || path == "\\" # empty path
    attrib = CONST::SMB_EXT_FILE_ATTR_DIRECTORY
  else
    return smb_error(CONST::SMB_COM_TRANSACTION2, c, CONST::SMB_STATUS_OBJECT_NAME_NOT_FOUND, true)
  end

  send_info_basic_res(c, { file_attributes: attrib })
end

#smb_cmd_trans_query_path_info_network(c, path) ⇒ Integer

Handles a TRANS2_QUERY_PATH_INFORMATION transaction request with SMB_QUERY_FILE_NETWORK_INFO Information Level.

Parameters:

  • c (Socket) —

    The client sending the request.

  • path (String) —

    The path which the client is requesting info from.

Returns:

  • (Integer) —

    The number of bytes returned to the client as response.


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# File 'lib/msf/core/exploit/remote/smb/server/share/information_level/query.rb', line 101

def smb_cmd_trans_query_path_info_network(c, path)
  contents = get_file_contents(client: c)

  if path && path.include?(file_name.downcase)
    attrib = CONST::SMB_EXT_FILE_ATTR_NORMAL
  elsif path && folder_name && path.ends_with?(folder_name.downcase)
    attrib = CONST::SMB_EXT_FILE_ATTR_DIRECTORY
  elsif path.nil? || path.empty? || path == "\x00" || path == "\\" # empty path
    attrib = CONST::SMB_EXT_FILE_ATTR_DIRECTORY
  else
    return smb_error(CONST::SMB_COM_TRANSACTION2, c, CONST::SMB_STATUS_OBJECT_NAME_NOT_FOUND, true)
  end

  send_info_network_res(c, {
    allocation_size: 1048576,
    end_of_file: contents.length,
    file_attributes: attrib
  })
end

#smb_cmd_trans_query_path_info_standard(c, path) ⇒ Integer

Handles a TRANS2_QUERY_PATH_INFORMATION transaction request with SMB_QUERY_FILE_STANDARD_INFO Information Level.

Parameters:

  • c (Socket) —

    The client sending the request.

  • path (String) —

    The path which the client is requesting info from.

Returns:

  • (Integer) —

    The number of bytes returned to the client as response.


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# File 'lib/msf/core/exploit/remote/smb/server/share/information_level/query.rb', line 73

def smb_cmd_trans_query_path_info_standard(c, path)
  contents = get_file_contents(client: c)

  if path && path.include?(file_name.downcase)
    attrib = 0 # File attributes => file
  elsif path && folder_name && path.ends_with?(folder_name.downcase)
    attrib = 1 # File attributes => directory
  elsif path.nil? || path.empty? || path == "\x00" || path == "\\" # empty path
    attrib = 1 # File attributes => directory
  else
    return smb_error(CONST::SMB_COM_TRANSACTION2, c, CONST::SMB_STATUS_OBJECT_NAME_NOT_FOUND, true)
  end

  send_info_standard_res(c, {
    allocation_size: 1048576,
    number_links: 1,
    delete_pending: 0,
    directory: attrib,
    end_of_file: contents.length
  })
end