SMB Session Pipe DCERPC Auditor

##
# This module requires Metasploit: https://metasploit.com/download
# Current source: https://github.com/rapid7/metasploit-framework
##

class MetasploitModule < Msf::Auxiliary

  # Exploit mixins should be called first
  include Msf::Exploit::Remote::SMB::Client
  include Msf::Exploit::Remote::SMB::Client::Authenticated
  include Msf::Exploit::Remote::DCERPC

  # Scanner mixin should be near last
  include Msf::Auxiliary::Scanner
  include Msf::Auxiliary::Report

  include Msf::OptionalSession::SMB

  def initialize
    super(
      'Name' => 'SMB Session Pipe DCERPC Auditor',
      'Description' => 'Determine what DCERPC services are accessible over a SMB pipe',
      'Author' => 'hdm',
      'License' => MSF_LICENSE,
    )

    register_options(
      [
        OptString.new('SMBPIPE', [ true, 'The pipe name to use (BROWSER)', 'BROWSER']),
      ]
    )
  end

  def connect(*args, **kwargs)
    super(*args, **kwargs, direct: @smb_direct)
  end

  attr_reader :rport

  @@target_uuids = [
    [ '00000131-0000-0000-c000-000000000046', '0.0' ],
    [ '00000134-0000-0000-c000-000000000046', '0.0' ],
    [ '00000136-0000-0000-c000-000000000046', '0.0' ],
    [ '00000143-0000-0000-c000-000000000046', '0.0' ],
    [ '000001a0-0000-0000-c000-000000000046', '0.0' ],
    [ '04fcb220-fcfd-11cd-bec8-00aa0047ae4e', '1.0' ],
    [ '06bba54a-be05-49f9-b0a0-30f790261023', '1.0' ],
    [ '0767a036-0d22-48aa-ba69-b619480f38cb', '1.0' ],
    [ '0a5a5830-58e0-11ce-a3cc-00aa00607271', '1.0' ],
    [ '0a74ef1c-41a4-4e06-83ae-dc74fb1cdd53', '1.0' ],
    [ '0b0a6584-9e0f-11cf-a3cf-00805f68cb1b', '1.0' ],
    [ '0b0a6584-9e0f-11cf-a3cf-00805f68cb1b', '1.1' ],
    [ '0b6edbfa-4a24-4fc6-8a23-942b1eca65d1', '1.0' ],
    [ '0c821d64-a3fc-11d1-bb7a-0080c75e4ec1', '1.0' ],
    [ '0d72a7d4-6148-11d1-b4aa-00c04fb66ea0', '1.0' ],
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  ]

  # Fingerprint a single host
  def run_host(ip)
    if session
      print_status("Using existing session #{session.sid}")
      @rport = datastore['RPORT'] = session.port
      self.simple = session.simple_client
      simple.connect("\\\\#{simple.address}\\IPC$") # smb_login connects to this share for some reason and it doesn't work unless we do too
      check_uuids(ip)
    else
      if datastore['RPORT'].blank? || datastore['RPORT'] == 0
        smb_services = [
          { port: 445, direct: true },
          { port: 139, direct: false }
        ]
      else
        smb_services = [
          { port: datastore['RPORT'], direct: datastore['SMBDirect'] }
        ]
      end

      smb_services.each do |smb_service|
        @rport = smb_service[:port]
        @smb_direct = smb_service[:direct]

        begin
          connect
          smb_login
          check_uuids(ip)
          disconnect
        rescue ::Exception
          print_line($!.to_s)
        end
      end
    end
  end

  def check_uuids(ip)
    @@target_uuids.each do |uuid|
      handle = dcerpc_handle_target(
        uuid[0], uuid[1],
        'ncacn_np', ["\\#{datastore['SMBPIPE']}"], simple.address
      )

      begin
        dcerpc_bind(handle)
        print_line("UUID #{uuid[0]} #{uuid[1]} OPEN VIA #{datastore['SMBPIPE']}")
        # Add Report
        report_note(
          host: ip,
          proto: 'tcp',
          sname: 'smb',
          port: rport,
          type: "UUID #{uuid[0]} #{uuid[1]}",
          data: "UUID #{uuid[0]} #{uuid[1]} OPEN VIA #{datastore['SMBPIPE']}"
        )
      rescue ::Rex::Proto::SMB::Exceptions::ErrorCode => e
        print_line("UUID #{uuid[0]} #{uuid[1]} ERROR 0x%.8x" % e.error_code)
      rescue StandardError => e
        print_line("UUID #{uuid[0]} #{uuid[1]} ERROR #{$!}")
      end
    end
  end

end