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

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

Instance Method Summary collapse

Instance Method Details

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

Builds and sends an TRANS2_FIND_FIRST2 response with SMB_FIND_FILE_BOTH_DIRECTORY_INFO information level.

Parameters:

  • c (Socket)

    The client to answer.

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

    Response custom values.

Options Hash (opts):

  • :search_count (Integer)

    The number of entries returned by the search.

  • :end_of_search (Integer)

    0 if search continues or nonzero otherwise.

  • :ea_error_offset (Integer)

    should be 0 for SMB_FIND_FILE_BOTH_DIRECTORY_INFO.

  • :end_of_file (Integer)

    The byte offset to the end of the file.

  • :allocation_size (Integer)

    The file allocation size in bytes.

  • :file_attributes (Integer)

    The extended file attributes of the file.

  • :data (String)

    The long name of the file.

Returns:

  • (Integer)

    The number of bytes returned to the client as response.


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# File 'lib/msf/core/exploit/smb/server/share/information_level/find.rb', line 132

def send_find_file_both_directory_info_res(c, opts = {})
  data = opts[:data] || ''
  search_count = opts[:search_count] || 0
  end_of_search = opts[:end_of_search] || 0
  ea_error_offset = opts[:ea_error_offset] || 0
  end_of_file = opts[:end_of_file] || 0
  allocation_size = opts[:allocation_size] || 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_FIND_FIRST2_RES_PARAMETERS.make_struct
  trans2_params.v['SID'] = 0xfffd
  trans2_params.v['SearchCount'] = search_count
  trans2_params.v['EndOfSearch'] = end_of_search
  trans2_params.v['EaErrorOffset'] = ea_error_offset
  trans2_params.v['LastNameOffset'] = 0

  find_file = CONST::SMB_FIND_FILE_BOTH_DIRECTORY_INFO_HDR.make_struct
  find_file.v['NextEntryOffset'] = CONST::SMB_FIND_FILE_BOTH_DIRECTORY_INFO_HDR_LENGTH + data.length
  find_file.v['FileIndex'] = 0
  find_file.v['loCreationTime'] = lo
  find_file.v['hiCreationTime'] = hi
  find_file.v['loLastAccessTime'] = lo
  find_file.v['hiLastAccessTime'] = hi
  find_file.v['loLastWriteTime'] = lo
  find_file.v['hiLastWriteTime'] = hi
  find_file.v['loLastChangeTime'] = lo
  find_file.v['hiLastChangeTime'] = hi
  find_file.v['EndOfFile'] = end_of_file
  find_file.v['AllocationSize'] = allocation_size
  find_file.v['ExtFileAttributes'] = file_attributes
  find_file.v['FileName'] = data

  send_trans2_res(c, trans2_params, find_file)
end

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

Builds and sends an TRANS2_FIND_FIRST2 response with SMB_FIND_FILE_NAMES_INFO information level.

Parameters:

  • c (Socket)

    The client to answer.

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

    Response custom values.

Options Hash (opts):

  • :data (String)

    The long name of the file.

Returns:

  • (Integer)

    The number of bytes returned to the client as response.


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# File 'lib/msf/core/exploit/smb/server/share/information_level/find.rb', line 176

def send_find_file_names_info_res(c, opts = {})
  data = opts[:data] || ''

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

  find_file = CONST::SMB_FIND_FILE_NAMES_INFO_HDR.make_struct
  find_file.v['NextEntryOffset'] = CONST::SMB_FIND_FILE_NAMES_INFO_HDR_LENGTH + data.length
  find_file.v['FileIndex'] = 0
  find_file.v['FileName'] = data

  trans2_params = CONST::SMB_TRANS2_FIND_FIRST2_RES_PARAMETERS.make_struct
  trans2_params.v['SID'] = 0xfffd
  trans2_params.v['SearchCount'] = 1
  trans2_params.v['EndOfSearch'] = 1
  trans2_params.v['EaErrorOffset'] = 0
  trans2_params.v['LastNameOffset'] = 0

  send_trans2_res(c, trans2_params, find_file)
end

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

Builds and sends an TRANS2_FIND_FIRST2 response with SMB_FIND_FILE_FULL_DIRECTORY_INFO information level.

Parameters:

  • c (Socket)

    The client to answer.

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

    Response custom values.

Options Hash (opts):

  • :search_count (Integer)

    The number of entries returned by the search.

  • :end_of_search (Integer)

    0 if search continues or nonzero otherwise.

  • :ea_error_offset (Integer)

    should be 0 for SMB_FIND_FILE_FULL_DIRECTORY_INFO.

  • :end_of_file (Integer)

    The byte offset to the end of the file.

  • :allocation_size (Integer)

    The file allocation size in bytes.

  • :file_attributes (Integer)

    The extended file attributes of the file.

  • :data (String)

    The long name of the file.

Returns:

  • (Integer)

    The number of bytes returned to the client as response.


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# File 'lib/msf/core/exploit/smb/server/share/information_level/find.rb', line 210

def send_find_full_directory_info_res(c, opts = {})
  data = opts[:data] || ''
  search_count = opts[:search_count] || 0
  end_of_search = opts[:end_of_search] || 0
  ea_error_offset = opts[:ea_error_offset] || 0
  end_of_file = opts[:end_of_file] || 0
  allocation_size = opts[:allocation_size] || 0
  file_attributes = opts[:file_attributes] || 0

  find_file = CONST::SMB_FIND_FILE_FULL_DIRECTORY_INFO_HDR.make_struct
  find_file.v['NextEntryOffset'] = CONST::SMB_FIND_FILE_FULL_DIRECTORY_INFO_HDR_LENGTH + data.length
  find_file.v['FileIndex'] = 0
  find_file.v['loCreationTime'] = lo
  find_file.v['hiCreationTime'] = hi
  find_file.v['loLastAccessTime'] = lo
  find_file.v['hiLastAccessTime'] = hi
  find_file.v['loLastWriteTime'] = lo
  find_file.v['hiLastWriteTime'] = hi
  find_file.v['loLastChangeTime'] = lo
  find_file.v['hiLastChangeTime'] = hi
  find_file.v['EndOfFile'] = end_of_file
  find_file.v['AllocationSize'] = allocation_size
  find_file.v['ExtFileAttributes'] = file_attributes
  find_file.v['FileName'] = data

  trans2_params = CONST::SMB_TRANS2_FIND_FIRST2_RES_PARAMETERS.make_struct
  trans2_params.v['SID'] = 0xfffd
  trans2_params.v['SearchCount'] = search_count
  trans2_params.v['EndOfSearch'] = end_of_search
  trans2_params.v['EaErrorOffset'] = ea_error_offset
  trans2_params.v['LastNameOffset'] = 0

  send_trans2_res(c, trans2_params, find_file)
end

#smb_cmd_find_file_both_directory_info(c, path) ⇒ Integer

Handles a TRANS2_FIND_FIRST2 transaction request with SMB_FIND_FILE_BOTH_DIRECTORY_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/smb/server/share/information_level/find.rb', line 15

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

  if path && path.include?(file_name.downcase)
    data = Rex::Text.to_unicode(file_name)
    length = contents.length
    ea = 0
    alloc = 1048576 # Allocation Size = 1048576 || 1Mb
    attrib = CONST::SMB_EXT_FILE_ATTR_NORMAL
    search = 1
  elsif path && folder_name && path.ends_with?(folder_name.downcase)
    data = Rex::Text.to_unicode(path)
    length = 0
    ea = 0x21
    alloc = 0 # 0Mb
    attrib = CONST::SMB_EXT_FILE_ATTR_DIRECTORY
    search = 0x100
  elsif path && path == "\\"
    data = Rex::Text.to_unicode(path)
    length = 0
    ea = 0x21
    alloc = 0 # 0Mb
    attrib = CONST::SMB_EXT_FILE_ATTR_DIRECTORY
    search = 0x100
  else
    return smb_error(CONST::SMB_COM_TRANSACTION2, c, CONST::SMB_STATUS_NO_SUCH_FILE, true)
  end

  send_find_file_both_directory_info_res(c, {
    data: data,
    end_of_file: length,
    ea_error_offset: ea,
    allocation_size: alloc,
    file_attributes: attrib,
    search_count: search,
    search_offset: search
  })
end

#smb_cmd_find_file_full_directory_info(c, path) ⇒ Integer

Handles a TRANS2_FIND_FIRST2 transaction request with SMB_FIND_FILE_FULL_DIRECTORY_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/smb/server/share/information_level/find.rb', line 80

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

  if path && path.include?(file_name.downcase)
    data = Rex::Text.to_unicode(file_name)
    length = contents.length
    ea = 0
    alloc = 1048576 # Allocation Size = 1048576 || 1Mb
    attrib = CONST::SMB_EXT_FILE_ATTR_NORMAL # File
    search = 0x100
  elsif path && folder_name && path.ends_with?(folder_name.downcase)
    data = Rex::Text.to_unicode(path)
    length = 0
    ea = 0x21
    alloc = 0 # 0Mb
    attrib = CONST::SMB_EXT_FILE_ATTR_DIRECTORY
    search = 1
  elsif path && path == "\\"
    data = Rex::Text.to_unicode(path)
    length = 0
    ea = 0x21
    alloc = 0 # 0Mb
    attrib = CONST::SMB_EXT_FILE_ATTR_DIRECTORY
    search = 1
  else
    return smb_error(CONST::SMB_COM_TRANSACTION2, c, CONST::SMB_STATUS_NO_SUCH_FILE, true)
  end

  send_find_full_directory_info_res(c, {
    data: data,
    end_of_file: length,
    ea_error_offset: ea,
    allocation_size: alloc,
    file_attributes: attrib,
    search_count: search,
    search_offset: search
  })
end

#smb_cmd_find_file_names_info(c, path) ⇒ Integer

Handles a TRANS2_FIND_FIRST2 transaction request with SMB_FIND_FILE_NAMES_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/smb/server/share/information_level/find.rb', line 60

def smb_cmd_find_file_names_info(c, path)
  if path && path.ends_with?(file_name.downcase)
    data = Rex::Text.to_unicode(file_name)
  elsif path && folder_name && path.ends_with?(folder_name.downcase)
    data = Rex::Text.to_unicode(path)
  elsif path && path == "\\"
    data = Rex::Text.to_unicode(path)
  else
    return smb_error(CONST::SMB_COM_TRANSACTION2, c, CONST::SMB_STATUS_NO_SUCH_FILE, true)
  end

  send_find_file_names_info_res(c, { data: data })
end