0x00 序言
很久之前就听说过VM加密,但一直对VM概念很模糊,于是最近便想去下VM壳相关的技术,但在网上各种帖子学习到的知识有限,不能很好的去了解VM壳的一些原理和机制,于是就在想去找个VM壳进行逆向,看看能不能去学习到些什么东西。
本次逆向的是某鹅基于JavaScript语言的一个栈式虚拟机,不得不说刚接触这个代码的时候着实看不懂写的是什么东西,可是随着慢慢的深入,越发觉得这个虚拟机犹如一个艺术品,很是奇妙。
下面就随着我一起一步步,揭开这个虚拟机的神秘面纱吧!
注:若有侵权,请联系我立即删除,本文只作为交流学习用途,一些关键信息已做相关处理。
0x01 准备工作
首先说明下我们的目的,验证码在滑动完成以后会向服务器发送一些数据,这些数据包含了一些必要或者非必要的信息。必要的信息如下:
image-20210910202439882.png
可以看到字段名是collect,根据字段名可以猜测到这个字段值是一些收集的数据,可能包含一些浏览器环境信息以及我们滑动滑块的轨迹或者是鼠标的移动轨迹这类的信息,另一个必要信息如下:
image-20210910202905631.png
以上两个加密字段值,是如何生成的,里面包含了一些什么数据,如何去模拟达到破解滑块的目的,便是此文章的目的。
0x02 定位加密点
通过浏览器控制台的搜索,我们试着搜索下这个collect字段:
image-20210910203451250.png
跟进去,在此处下断点:
image-20210910203537714.png
再次滑动,果不其然在这个地方断了下来:
image-20210910203711040.png
简单分析了下e的值,发现和我们提交的参数格式基本一致,所以collect应该就是在这个地方赋值的,接下来就是看看R()函数是怎么生成collect的,跟进R函数如下:
image-20210910203926637.png
现在跟到了getData这个函数,我们下断点,继续执行代码,让断点触发,然后到控制台打印了下a变量,a看起来像是一个接口,提供了一些函数:
image-20210910204229899.png
继续往上面找找,看看a是怎么来的,在上面几行找到了a的赋值:
image-20210910204412760.png
a = window.TDC
看起来是在window对象里面又定义了一个TDC对象,然后将TDC对象赋值给了a,现在让我们看看getData函数的实现,跟进来,就跟到了这个地方:
所以getData函数的实现应如下:
//getData实现function k() { var B = A.slice(0); B[0] = [this], B[1] = [arguments], B[2] = [k]; for (var M = 0; M < G.length && M < arguments.length; M++) 0 < G[M] && (B[G[M]] = [arguments[M]]); return __TENCENT_CHAOS_VM(w, C, T, B, H, U, J, Z)}//getData外层匿名函数function() { for (var w = C[D++], A = [], B = C[D++], M = C[D++], G = [], Q = 0; Q < B; Q++) A[C[D++]] = E[C[D++]]; for (Q = 0; Q < M; Q++) G[Q] = C[D++]; E.push( function k() { var B = A.slice(0); B[0] = [this], B[1] = [arguments], B[2] = [k]; for (var M = 0; M < G.length && M < arguments.length; M++) 0 < G[M] && (B[G[M]] = [arguments[M]]); return __TENCENT_CHAOS_VM(w, C, T, B, H, U, J, Z) })}//getData函数体里面,A、B、G变量对应的都是外层匿名函数的局部变量,就是当getData函数被push进E的时候的变量值
可能解释的有些不太清楚,我们先来看看下面的代码:
var E = []; //声明了一个空数组E,用来存放函数(function TEST(){ //立即执行函数 var rand = Math.random() //生成随机数 console.log(rand) E.push(function (){ //将函数存入数组 var test = rand; console.log(test) //打印上文生成的随机数 }) if(E.length > 1)return; TEST()})()E[0]() E[1]()
运行结果如下:
0.53717861187188860.64748716256169070.53717861187188860.6474871625616907
从这里可以发现,随机数被保存了下来,所以可以通过这种方式去实现函数部分传参的保存,当函数被调用时,所需要的变量值未被销毁,仍可以进行访问使用,那么问题来了,为什么要通过这种方式进行函数调用呢,直接写一个函数去实现相应的功能不行吗?
这个问题就要随着我一步步分析,你就会明白为什么会这样写。
为了验证getData函数是不是通过上述地方进行调用,我们把代码复制过来,通过nodejs的环境来进行调用,为了模拟真实的浏览器环境,用到一个叫做jsdom的库。
jsdom介绍如下:
jsdom 是许多 Web 标准的纯 JavaScript 实现,特别是 WHATWG DOM和HTML标准,用于 Node.js。一般来说,该项目的目标是模拟足够多的 Web 浏览器子集,以用于测试和抓取真实的 Web 应用程序。
node环境下安装:
npm install jsdom
用法:
const jsdom = require("jsdom");const {JSDOM} = jsdom;const dom = new JSDOM(`<!DOCTYPE html><p>Hello world</p>`);window = dom.window;document = window.document;XMLHttpRequest = window.XMLHttpRequest;
完成环境模拟,我们就可以将代码复制到编辑器里面去,如下图所示:
image-20210929203518634.png
我们在代码末尾加上:
console.log(window.TDC)
打印结果如下:
{ getInfo: [Function: M], setData: [Function: M], clearTc: [Function: M], getData: [Function: M] //getData函数已经能够进行调用了}
调用getData函数:
console.log(window.TDC.getData())
结果如下:
e43rYszBdPpLFbYEnvf6EH423DMkVfmqhtQV%2BCnQMWEdGBJzm4MFSOGDFX0ykuQGqe4c1cxY5APK40WOd9u7mbdwXIQ1x9OBSgdVHmORAxmVEXILfudlFIYF4KW7ZuOdX9ixo4efmMqIViV1IKT%2B24mEOmUJ2xtr6ULKcsrp0Xg3GQkNZ7iWy2G87RaR5NpSgHnX6q8eD5UIoml8J6bqef1JDKK%2BW4iXKaj3j5PGwLo%2FqrW1 mWy%2BB0MSvS91m%2FYk%2BNtC79fF0pOuSvflUSrAAohWJXUgpP7b%2BTuue9zspkzK8nLSWZGjTc4sycUohsG5owCAZch4y%2FYdttQ4D4nFT4hWJXUgpP7bM3NuzmNY663gs%2FQ7BKUdIk9HX3mnJQOT%2FB2S9xc25mskD87Pieargmi4QVyC1l%2Bnr5VFrxOHLI%2FkcpgPZqPrbVoWKk8cGT03izOvvebVB7xzp4B06AdsZe 7Q%2FnP%2BALoM%2F3Q6Sp0JU7daFipPHBk9N1oWKk8cGT03mCh6%2FirnaBoh%2BZs4V9dDlA%3D%3D
在调用处下断点:
image-20210929204326642.png
进入调试模式,F7步入:
image-20210929204442157.png
可以看到函数进入到了前面我们分析的这个地方。接下来先对整个代码的结构进行分析。
0x03 代码结构分析
先把代码全部折叠,主要的函数是TENCENT_CHAOS_STACK函数,又把TENCENT_CHAOS_STACK函数下级进行展开,结构如下:
var __TENCENT_CHAOS_STACK = function() { function __TENCENT_CHAOS_VM(c, R, H, h, I, C, w, F) {...} function I(E) {...} return __TENCENT_CHAOS_VM.v = 0, __TENCENT_CHAOS_VM(0, function(E){...}(["...",[...]]), window) //TENCENT_CHAOS_VM传参分析:(0, 立即函数返回值, window) }();
现在我们把这个立即函数单独提取出来运行:
image-20210929210108491.png
运行结果如下:
image-20210929210147252.png
其实这个运行结果可以看做是字节码,然后每一个字节码对应一个不同的操作或是数据,函数TENCENT_CHAOS_VM的作用就是解释并且执行字节码,TENCENT_CHAOS_VM函数的第一个传参是0,这个值代表PC寄存器,作用是指向下一个字节码的位置。
代码结构简化如下:
image-20210929211453882.png
现在我们知道了TENCENT_CHAOS_VM是用来解释并执行字节码的,现在让我们来看看TENCENT_CHAOS_VM的执行过程(其实到这一步各位读者可以自行去调试一下,更容易理解整个执行流程)
0x04 虚拟机执行过程
在函数入口下断点:
image-20211014213828123.png
进入调试模式,程序在断点处断下来,此时变量表如下:
image-20211014214141246.png
c是第一个被传入的变量,也就是PC变量,它指向下一个被执行字节码的位置,也就是第二个传入的变量(R,字节码)的第0个元素,即为7,我们将程序继续往下执行,来到这里:
image-20211014214818737.png
x部分指令如下:
image-20211014214856357.png
图片里面的"G为此次函数是否完成的标志",这里用"次"的原因是这个VM包含递归调用,也就是在这个函数里面又调用这个函数,我们现在知道这个函数是不停的执行字节码,PC是下一个被执行字节码或是数据的地址,那么就可以通过在不同的地方定义不同的操作,然后通过调用本函数,传入不同的PC,去完成不同的操作(也就是函数调用),通俗来讲就是和程序里面的函数偏移地址是一样的道理,通过偏移地址去找到函数,并执行函数。这个VM的第一个传参就是PC,所以可以通过定义好的函数偏移,去进行函数调用,函数的本质也是一堆指令的集合。
现在PC的值为0,上面说到对应的字节码是7:
image-20211014215952630.png
所以要执行x数组里面的第七条指令,跟进如下:
image-20211014220034306.png
h为栈,所有的数据都是通过栈来操作的,也就是把需要用到的数据存到这个栈中,然后需要用的时候取出来或者直接对栈元素进行操作h.length = R[c++]
的含义是定义栈的长度,栈的长度为R[1],R(字节码)不但保存了指令,也保存了数据。
然后又回到循环的位置,执行下一个字节码:
image-20211014220230087.png
可以看到整个字节码的长度有四万多,一条一条的调试就不太现实了,现在就需要要进一步分析。
0x05 collect加密还原
在这些指令集中(x数组),包含了一个相加的指令:
h[h.length - 2] = h[h.length - 2] + h.pop()
一般字符串的拼接,都是直接相加,我们在这条指令后面,加一句console.log(h[h.length - 1])
,将栈顶的数据打印出来看一看会不会有什么发现(代码最后记得加上console.log(window.TDC.getData())
去调用加密):
image-20211014221745160.png
输出了很多整数,在继续往下面找,发现一个熟悉的变量:
image-20211014221847864.png
这个是tea加密的delta常量值乘以十,这个先留意一下,我们打印代码的时候,再加个判断,使控制台只打印字符串:
if(typeof h[h.length - 1] == "string"){ console.log(h[h.length - 1])}
打印的部分结果如下:
{"cd":[24,"about:blank?rand=tel:1519713624347","0-0-0-24-*-*-|-*",[],176688296,[],0,0,"",[],0,0,0,1,9,[],0,0,1634221284,0,"Mozilla/5.0 (win32) AppleWebKit/537.36 (KHTML, like Gecko) jsdom/17.0.0","top",259121870,1634221284,0,"?rand=tel:1512991986334",0{"cd":[24,"about:blank?rand=tel:1519713624347","0-0-0-24-*-*-|-*",[],176688296,[],0,0,"",[],0,0,0,1,9,[],0,0,1634221284,0,"Mozilla/5.0 (win32) AppleWebKit/537.36 (KHTML, like Gecko) jsdom/17.0.0","top",259121870,1634221284,0,"?rand=tel:1512991986334",0,{"cd":[24,"about:blank?rand=tel:1519713624347","0-0-0-24-*-*-|-*",[],176688296,[],0,0,"",[],0,0,0,1,9,[],0,0,1634221284,0,"Mozilla/5.0 (win32) AppleWebKit/537.36 (KHTML, like Gecko) jsdom/17.0.0","top",259121870,1634221284,0,"?rand=tel:1512991986334",0,"{"cd":[24,"about:blank?rand=tel:1519713624347","0-0-0-24-*-*-|-*",[],176688296,[],0,0,"",[],0,0,0,1,9,[],0,0,1634221284,0,"Mozilla/5.0 (win32) AppleWebKit/537.36 (KHTML, like Gecko) jsdom/17.0.0","top",259121870,1634221284,0,"?rand=tel:1512991986334",0,"{"cd":[24,"about:blank?rand=tel:1519713624347","0-0-0-24-*-*-|-*",[],176688296,[],0,0,"",[],0,0,0,1,9,[],0,0,1634221284,0,"Mozilla/5.0 (win32) AppleWebKit/537.36 (KHTML, like Gecko) jsdom/17.0.0","top",259121870,1634221284,0,"?rand=tel:1512991986334",0,""{"cd":[24,"about:blank?rand=tel:1519713624347","0-0-0-24-*-*-|-*",[],176688296,[],0,0,"",[],0,0,0,1,9,[],0,0,1634221284,0,"Mozilla/5.0 (win32) AppleWebKit/537.36 (KHTML, like Gecko) jsdom/17.0.0","top",259121870,1634221284,0,"?rand=tel:1512991986334",0,"",{"cd":[24,"about:blank?rand=tel:1519713624347","0-0-0-24-*-*-|-*",[],176688296,[],0,0,"",[],0,0,0,1,9,[],0,0,1634221284,0,"Mozilla/5.0 (win32) AppleWebKit/537.36 (KHTML, like Gecko) jsdom/17.0.0","top",259121870,1634221284,0,"?rand=tel:1512991986334",0,"","{"cd":[24,"about:blank?rand=tel:1519713624347","0-0-0-24-*-*-|-*",[],176688296,[],0,0,"",[],0,0,0,1,9,[],0,0,1634221284,0,"Mozilla/5.0 (win32) AppleWebKit/537.36 (KHTML, like Gecko) jsdom/17.0.0","top",259121870,1634221284,0,"?rand=tel:1512991986334",0,"","other{"cd":[24,"about:blank?rand=tel:1519713624347","0-0-0-24-*-*-|-*",[],176688296,[],0,0,"",[],0,0,0,1,9,[],0,0,1634221284,0,"Mozilla/5.0 (win32) AppleWebKit/537.36 (KHTML, like Gecko) jsdom/17.0.0","top",259121870,1634221284,0,"?rand=tel:1512991986334",0,"","other"{"cd":[24,"about:blank?rand=tel:1519713624347","0-0-0-24-*-*-|-*",[],176688296,[],0,0,"",[],0,0,0,1,9,[],0,0,1634221284,0,"Mozilla/5.0 (win32) AppleWebKit/537.36 (KHTML, like Gecko) jsdom/17.0.0","top",259121870,1634221284,0,"?rand=tel:1512991986334",0,"","other",{"cd":[24,"about:blank?rand=tel:1519713624347","0-0-0-24-*-*-|-*",[],176688296,[],0,0,"",[],0,0,0,1,9,[],0,0,1634221284,0,"Mozilla/5.0 (win32) AppleWebKit/537.36 (KHTML, like Gecko) jsdom/17.0.0","top",259121870,1634221284,0,"?rand=tel:1512991986334",0,"","other",tel:1634221284{"cd":[24,"about:blank?rand=tel:1519713624347","0-0-0-24-*-*-|-*",[],176688296,[],0,0,"",[],0,0,0,1,9,[],0,0,1634221284,0,"Mozilla/5.0 (win32) AppleWebKit/537.36 (KHTML, like Gecko) jsdom/17.0.0","top",259121870,1634221284,0,"?rand=tel:1512991986334",0,"","other",tel:1634221284,{"cd":[24,"about:blank?rand=tel:1519713624347","0-0-0-24-*-*-|-*",[],176688296,[],0,0,"",[],0,0,0,1,9,[],0,0,1634221284,0,"Mozilla/5.0 (win32) AppleWebKit/537.36 (KHTML, like Gecko) jsdom/17.0.0","top",259121870,1634221284,0,"?rand=tel:1512991986334",0,"","other",1634221284,"{"cd":[24,"about:blank?rand=tel:1519713624347","0-0-0-24-*-*-|-*",[],176688296,[],0,0,"",[],0,0,0,1,9,[],0,0,1634221284,0,"Mozilla/5.0 (win32) AppleWebKit/537.36 (KHTML, like Gecko) jsdom/17.0.0","top",259121870,1634221284,0,"?rand=tel:1512991986334",0,"","other",1634221284,"UTF-8{"cd":[24,"about:blank?rand=tel:1519713624347","0-0-0-24-*-*-|-*",[],176688296,[],0,0,"",[],0,0,0,1,9,[],0,0,1634221284,0,"Mozilla/5.0 (win32) AppleWebKit/537.36 (KHTML, like Gecko) jsdom/17.0.0","top",259121870,1634221284,0,"?rand=tel:1512991986334",0,"","other",1634221284,"UTF-8"[1024[1024,[1024,768[1024,768]{"cd":[24,"about:blank?rand=tel:1519713624347","0-0-0-24-*-*-|-*",[],176688296,[],0,0,"",[],0,0,0,1,9,[],0,0,1634221284,0,"Mozilla/5.0 (win32) AppleWebKit/537.36 (KHTML, like Gecko) jsdom/17.0.0","top",259121870,1634221284,0,"?rand=tel:1512991986334",0,"","other",1634221284,"UTF-8",{"cd":[24,"about:blank?rand=tel:1519713624347","0-0-0-24-*-*-|-*",[],176688296,[],0,0,"",[],0,0,0,1,9,[],0,0,1634221284,0,"Mozilla/5.0 (win32) AppleWebKit/537.36 (KHTML, like Gecko) jsdom/17.0.0","top",259121870,1634221284,0,"?rand=tel:1512991986334",0,"","other",1634221284,"UTF-8",[1024,768]{"cd":[24,"about:blank?rand=tel:1519713624347","0-0-0-24-*-*-|-*",[],176688296,[],0,0,"",[],0,0,0,1,9,[],0,0,1634221284,0,"Mozilla/5.0 (win32) AppleWebKit/537.36 (KHTML, like Gecko) jsdom/17.0.0","top",259121870,1634221284,0,"?rand=tel:1512991986334",0,"","other",1634221284,"UTF-8",[1024,768],{"cd":[24,"about:blank?rand=tel:1519713624347","0-0-0-24-*-*-|-*",[],176688296,[],0,0,"",[],0,0,0,1,9,[],0,0,1634221284,0,"Mozilla/5.0 (win32) AppleWebKit/537.36 (KHTML, like Gecko) jsdom/17.0.0","top",259121870,1634221284,0,"?rand=tel:1512991986334",0,"","other",1634221284,"UTF-8",[1024,768],0{"cd":[24,"about:blank?rand=tel:1519713624347","0-0-0-24-*-*-|-*",[],176688296,[],0,0,"",[],0,0,0,1,9,[],0,0,1634221284,0,"Mozilla/5.0 (win32) AppleWebKit/537.36 (KHTML, like Gecko) jsdom/17.0.0","top",259121870,1634221284,0,"?rand=tel:1512991986334",0,"","other",1634221284,"UTF-8",[1024,768],0,{"cd":[24,"about:blank?rand=tel:1519713624347","0-0-0-24-*-*-|-*",[],176688296,[],0,0,"",[],0,0,0,1,9,[],0,0,1634221284,0,"Mozilla/5.0 (win32) AppleWebKit/537.36 (KHTML, like Gecko) jsdom/17.0.0","top",259121870,1634221284,0,"?rand=tel:1512991986334",0,"","other",1634221284,"UTF-8",[1024,768],0,1{"cd":[24,"about:blank?rand=tel:1519713624347","0-0-0-24-*-*-|-*",[],176688296,[],0,0,"",[],0,0,0,1,9,[],0,0,1634221284,0,"Mozilla/5.0 (win32) AppleWebKit/537.36 (KHTML, like Gecko) jsdom/17.0.0","top",259121870,1634221284,0,"?rand=tel:1512991986334",0,"","other",1634221284,"UTF-8",[1024,768],0,1,{"cd":[24,"about:blank?rand=tel:1519713624347","0-0-0-24-*-*-|-*",[],176688296,[],0,0,"",[],0,0,0,1,9,[],0,0,1634221284,0,"Mozilla/5.0 (win32) AppleWebKit/537.36 (KHTML, like Gecko) jsdom/17.0.0","top",259121870,1634221284,0,"?rand=tel:1512991986334",0,"","other",1634221284,"UTF-8",[1024,768],0,1,0{"cd":[24,"about:blank?rand=tel:1519713624347","0-0-0-24-*-*-|-*",[],176688296,[],0,0,"",[],0,0,0,1,9,[],0,0,1634221284,0,"Mozilla/5.0 (win32) AppleWebKit/537.36 (KHTML, like Gecko) jsdom/17.0.0","top",259121870,1634221284,0,"?rand=tel:1512991986334",0,"","other",1634221284,"UTF-8",[1024,768],0,1,0,{"cd":[24,"about:blank?rand=tel:1519713624347","0-0-0-24-*-*-|-*",[],176688296,[],0,0,"",[],0,0,0,1,9,[],0,0,1634221284,0,"Mozilla/5.0 (win32) AppleWebKit/537.36 (KHTML, like Gecko) jsdom/17.0.0","top",259121870,1634221284,0,"?rand=tel:1512991986334",0,"","other",1634221284,"UTF-8",[1024,768],0,1,0,""{"cd":[24,"about:blank?rand=tel:1519713624347","0-0-0-24-*-*-|-*",[],176688296,[],0,0,"",[],0,0,0,1,9,[],0,0,1634221284,0,"Mozilla/5.0 (win32) AppleWebKit/537.36 (KHTML, like Gecko) jsdom/17.0.0","top",259121870,1634221284,0,"?rand=tel:1512991986334",0,"","other",1634221284,"UTF-8",[1024,768],0,1,0,"",{"cd":[24,"about:blank?rand=tel:1519713624347","0-0-0-24-*-*-|-*",[],176688296,[],0,0,"",[],0,0,0,1,9,[],0,0,1634221284,0,"Mozilla/5.0 (win32) AppleWebKit/537.36 (KHTML, like Gecko) jsdom/17.0.0","top",259121870,1634221284,0,"?rand=tel:1512991986334",0,"","other",1634221284,"UTF-8",[1024,768],0,1,0,"",[]{"cd":[24,"about:blank?rand=tel:1519713624347","0-0-0-24-*-*-|-*",[],176688296,[],0,0,"",[],0,0,0,1,9,[],0,0,1634221284,0,"Mozilla/5.0 (win32) AppleWebKit/537.36 (KHTML, like Gecko) jsdom/17.0.0","top",259121870,1634221284,0,"?rand=tel:1512991986334",0,"","other",1634221284,"UTF-8",[1024,768],0,1,0,"",[],{"cd":[24,"about:blank?rand=tel:1519713624347","0-0-0-24-*-*-|-*",[],176688296,[],0,0,"",[],0,0,0,1,9,[],0,0,1634221284,0,"Mozilla/5.0 (win32) AppleWebKit/537.36 (KHTML, like Gecko) jsdom/17.0.0","top",259121870,1634221284,0,"?rand=tel:1512991986334",0,"","other",1634221284,"UTF-8",[1024,768],0,1,0,"",[],0{"cd":[24,"about:blank?rand=tel:1519713624347","0-0-0-24-*-*-|-*",[],176688296,[],0,0,"",[],0,0,0,1,9,[],0,0,1634221284,0,"Mozilla/5.0 (win32) AppleWebKit/537.36 (KHTML, like Gecko) jsdom/17.0.0","top",259121870,1634221284,0,"?rand=tel:1512991986334",0,"","other",1634221284,"UTF-8",[1024,768],0,1,0,"",[],0,{"cd":[24,"about:blank?rand=tel:1519713624347","0-0-0-24-*-*-|-*",[],176688296,[],0,0,"",[],0,0,0,1,9,[],0,0,1634221284,0,"Mozilla/5.0 (win32) AppleWebKit/537.36 (KHTML, like Gecko) jsdom/17.0.0","top",259121870,1634221284,0,"?rand=tel:1512991986334",0,"","other",1634221284,"UTF-8",[1024,768],0,1,0,"",[],0,true
看样子是打印了一些环境参数,cd应该就是collectData的缩写,意为收集到的数据,但是在控制台找不到完整的json数据。
上面发现的delta常量,是tea加密的一个常量,tea加密的核心算法如下:
void EncryptTEA(unsigned int *firstChunk, unsigned int *secondChunk, unsigned int* key){ unsigned int y = *firstChunk; unsigned int z = *secondChunk; unsigned int sum = 0; unsigned int delta = 0x9e3779b9; for (int i = 0; i < 8; i++)//8轮运算(需要对应下面的解密核心函数的轮数一样) { sum += delta;//第一轮加密的时候sum值等于delta常量值 y += ((z << 4) + key[0]) ^ (z + sum) ^ ((z 5) + key[1]); z += ((y << 4) + key[2]) ^ (y + sum) ^ ((y 5) + key[3]); } *firstChunk = y; *secondChunk = z;}
由于第一轮加密的时候sum值等于delta常量值,我们在加法指令处的代码改为:
h[h.length - 2] = h[h.length - 2] + h.pop()if(typeof h[h.length - 2] == "number" && h[h.length - 2] == 0x9e3779b9){ //当加密结果为delta常量时打印bingo console.log("bingo")}
并在console.log("bingo")
处下断点,然后进行调试:
触发断点:
image-20211014224250603.png
可以看到h变量(栈)中有很多整数,我们通过javaScript写一个把整数转为字符串的代码:
function longsToStr(l) { var a = new Array(l.length); for (var i = 0; i < l.length; i++) { a[i] = String.fromCharCode(l[i] & 0xFF, l[i] > 8 & 0xFF, l[i] > 16 & 0xFF, l[i] > 24 & 0xFF); } return a.join('');}
image-20211014225614383.png
将h[3]中的两个整数还原得到一个类似原文的字符串:
longsToStr([741432155]) + longsToStr([842083377])"[[1,1,12"
我们重新修改打印代码:
if(typeof h[h.length - 2] == "number" && h[h.length - 2] == 0x9e3779b9){ //当加密结果为delta常量时打印bingo console.log(longsToStr([h[3][0][0]]) + longsToStr([h[3][0][1]]))}
打印结果如下:
[[1,1,12]]{"cd":[24,"about:blank?rand=1519713624347","0-0-0-24-*-*-|-*",[],tel:176688296,[],0,0,"",[],0,0,0,1,9,[],0,0,tel:1634223750,0,"Mozilla/5.0 (win32) AppleWebKit/537.36 (KHTML, like Gecko) jsdom/17.0.0","top",999760772,1634223750,0,"?rand=1512991986334",0,"","other",1634223750,"UTF-8",[1024,768],0,1,0,"",[],0,true,,[],0,0,["en-US","en"],"98k"],"sd":{"od":"C"}}
看来加密前的明文大致是这样子,现在我们需要进一步确认这个tea加密是否为标准的tea加密,密钥是怎么生成的。
接下来就是一步步动态调试,一步步跟进,还原出加解密如下:
function hex2int(hex) { var len = hex.length, a = new Array(len), code; for (var i = 0; i < len; i++) { code = hex.charCodeAt(i); if (48<=code && code < 58) { code -= 48; } else { code = (code & 0xdf) - 65 + 10; } a[i] = code; } return a.reduce(function(acc, c) { acc = 16 * acc + c; return acc; }, 0);}function Base64() { // private property this._keyStr = "ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz0123456789+/=";}function strToLongs(s) { var l = new Array(Math.ceil(s.length/4)); for (var i=0; i<l.length; i++) { // note little-endian encoding - endianness is irrelevant as long as // it is the same in longsToStr() l[i] = s.charCodeAt(i*4) + (s.charCodeAt(i*4+1)<<8) + (s.charCodeAt(i*4+2)<<16) + (s.charCodeAt(i*4+3)<<24); } return l; // note running off the end of the string generates nulls since}function longsToStr(l) { // convert array of longs back to string var a = new Array(l.length); for (var i = 0; i < l.length; i++) { a[i] = String.fromCharCode(l[i] & 0xFF, l[i] > 8 & 0xFF, l[i] > 16 & 0xFF, l[i] > 24 & 0xFF); } return a.join(''); // use Array.join() rather than repeated string appends for efficiency in IE}Base64.prototype.encode = function (input) { var output = "", chr1, chr2, chr3, enc1, enc2, enc3, enc4, i = 0; //input = this._utf8_encode(input); while (i < input.length) { chr1 = input.charCodeAt(i++); chr2 = input.charCodeAt(i++); chr3 = input.charCodeAt(i++); enc1 = chr1 2; enc2 = ((chr1 & 3) << 4) | (chr2 4); enc3 = ((chr2 & 15) << 2) | (chr3 6); enc4 = chr3 & 63; if (isNaN(chr2)) { enc3 = enc4 = 64; } else if (isNaN(chr3)) { enc4 = 64; } output = output + this._keyStr.charAt(enc1) + this._keyStr.charAt(enc2) + this._keyStr.charAt(enc3) + this._keyStr.charAt(enc4); } return output;}Base64.prototype.decode = function (input) { var output = [], chr1, chr2, chr3, enc1, enc2, enc3, enc4, i = 0; input = input.replace(/[^A-Za-z0-9\+\/\=]/g, ""); while (i < input.length) { enc1 = this._keyStr.indexOf(input.charAt(i++)); enc2 = this._keyStr.indexOf(input.charAt(i++)); enc3 = this._keyStr.indexOf(input.charAt(i++)); enc4 = this._keyStr.indexOf(input.charAt(i++)); chr1 = (enc1 << 2) | (enc2 4); chr2 = ((enc2 & 15) << 4) | (enc3 2); chr3 = ((enc3 & 3) << 6) | enc4; output.push(String.fromCharCode(chr1)); if (enc3 != 64) { output.push(String.fromCharCode(chr2)); } if (enc4 != 64) { output.push(String.fromCharCode(chr3)); } } //output = this._utf8_decode(output); return output.join("");}function EncryptBlock(EncryData, Key){ var x = EncryData[0]; var y = EncryData[1]; var sum = 0; var delta = 0x9E3779B9; for (var i = 0; i < 32; i++){ if(((sum & 3) == Key[6]) ){ x += (((y << 4) ^ (y > 5)) + y) ^ (sum + Key[sum & 3] + Key[4]); }else if((sum & 3) == Key[7]){ x += (((y << 4) ^ (y > 5)) + y) ^ (sum + Key[sum & 3] + Key[5]); }else{ x += (((y << 4) ^ (y > 5)) + y) ^ (sum + Key[sum & 3]); } sum += delta; if(((sum 11) & 3) == Key[6]){ y += (((x << 4) ^ (x > 5)) + x) ^ (sum + Key[(sum 11) & 3] + Key[4]); }else if(((sum 11) & 3) == Key[7]){ y += (((x << 4) ^ (x > 5)) + x) ^ (sum + Key[(sum 11) & 3] + Key[5]); }else{ y += (((x << 4) ^ (x > 5)) + x) ^ (sum + Key[(sum 11) & 3]); } } return [x, y];}function DecryptBlock(DecryData, Key){ var x = DecryData[0]; var y = DecryData[1]; var sum = 0x9E3779B9 * 32; var delta = 0x9E3779B9; for (var i = 0; i < 32; i++){ if(((sum 11) & 3) == Key[6]){ y -= (((x << 4) ^ (x > 5)) + x) ^ (sum + Key[(sum 11) & 3] + Key[4]); }else if(((sum 11) & 3) == Key[7]){ y -= (((x << 4) ^ (x > 5)) + x) ^ (sum + Key[(sum 11) & 3] + Key[5]); }else{ y -= (((x << 4) ^ (x > 5)) + x) ^ (sum + Key[(sum 11) & 3]); } sum -= delta; if(((sum & 3) == Key[6]) ){ x -= (((y << 4) ^ (y > 5)) + y) ^ (sum + Key[sum & 3] + Key[4]); }else if((sum & 3) == Key[7]){ x -= (((y << 4) ^ (y > 5)) + y) ^ (sum + Key[sum & 3] + Key[5]); }else{ x -= (((y << 4) ^ (y > 5)) + y) ^ (sum + Key[sum & 3]); } } return [x, y];}var teaDecrypt = function (msg, Key){ var res = new Base64().decode(msg); var rounds = res.length 3; var tmp; var final = ""; for(var i = 0; i < rounds; i++){ tmp = DecryptBlock(strToLongs(res.slice(i*8, i*8 + 8)), Key); final += longsToStr(tmp); } return final;}function teaEncrypt(msg, Key){ var final = ""; var rounds = msg.length 3; for(var i = 0; i < rounds; i++){ tmp = EncryptBlock(strToLongs(msg.slice(i*8, i*8 + 8)), Key); final += longsToStr(tmp); } return new Base64().encode(final)}
经过还原代码发现tea加密有变,具体的如上面的代码所示,正常的tea加密key为16字节,也就是4个int,但是这个变种tea算法在进行加解密时引入了额外8个字节的“密钥”,两个判断变量,判断是否将额外密钥加入计算。
通过测试发现每次密钥都不同,如何得到原本的16字节key,8个额外的key以及判断变量?在这里我想过一个通过tea加密函数入口地址的偏移去计算密钥的地址或是通过一些固定的特征码计算key的地址,但可惜的是只能拿到基本的16字节的地址,额外密钥以及判断变量则不能拿到,不同的滑块对应的不通源码,里面的字节码都会有变化,因此这种方法便放弃了。
加密在执行的时候,肯定会从栈里面取出这些变量,因此我就想到可以通过找到一个代码执行到某一句的时候,栈里面刚好有我们需要的key,然后我们将这些key进行返回。基于这个想法,我写了一个正则表达式去匹配整个代码,并对代码的加法指令进行修改,让代码字节把key吐出来,脚本如下:
function dec(jsText, cipherTxt){ jsText = jsText.replace(/TypeError\(.*?\)/g,"\"error\""); var pos = jsText.indexOf("TENCENT_CHAOS_VM"); var PC = (pos += 17,jsText.slice(pos, pos + 1)); var PB = (pos += 2,jsText.slice(pos, pos + 1)); var STACK = (pos += 4,jsText.slice(pos, pos + 1)); var HANDLE = /var [A-Za-z]=\[function/.exec(jsText)[0].slice(4,5); var COD = /try\{for\(var [A-Za-z]=/.exec(jsText)[0].slice(12,13); jsText = "var key;var flag=0;" + jsText.replace(COD+"="+HANDLE+"["+PB+"["+PC+"++]]();","{if(flag==1){return key;}"+COD+"="+HANDLE+"["+PB+"["+PC+"++]]();"+"}").replace("R[R.length-2]=R[R.length-2]+R.pop()".replace(/R/g,STACK),'if((R[R.length-2]==0x9E3779B9)||(R[R.length-1]==0x9E3779B9)){for(var i=0;i<R.length;i++){if(Array.isArray(R[i][0])&&R[i][0].length==4&&(typeof R[i][0][0])=="number"&&R[i][0][0]>1000){key=R[i][0];break;}};key.push(PB[PB.indexOf(0x9E3779B9) - 19]);key.push(PB[PB.indexOf(0x9E3779B9) - 53]);key.push(PB[PB.indexOf(0x9E3779B9) - 6]);key.push(PB[PB.indexOf(0x9E3779B9) + 15]);flag=1;return key;}R[R.length-2]=R[R.length-2]+R.pop()'.replace(/R/g,STACK).replace(/PB/g,PB)); var tmpKey = eval(jsText+"window.TDC.getData(!0)") return teaDecrypt(cipherTxt, tmpKey);//teaDecrypt和上面的代码一致}
将tea算法与这个dec进行整合,我们就能实现对collect的解密了,测试如下:
image-20211014232739353.png
返回值如下:
{"cd":["https://ui.ptlogin2.qq.com/?rand=tel:1512991986334",0,true,[],0,["zh-CN","zh"],0,1630507225,360,640,"360-640-640-24-*-*-|-*",5,[],0,[],0,[],2, [[1,1,12]] ,159,1630507226,"Win","98k","",0,"","Mozilla/5.0 (Linux;Android 5.0; SM-G900P Build/LRX21T) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/89.0.4389.90 Mobile Safari/537.36",0,1084792919,0.746999979019165,[],0,0,"UTF-8",1467230630,1630507225,[],[345,345],0,24,"7688915523684241625","true",2,1023], "sd":{"od":"C"}}
现在collectData的解密工作已完成,接下来我们需要对解密后的代码进行分析
0x05 collect数据分析以及生成
其中cd是收集到的数据,用一个数组进行保存,而经过多次测试后发现,数组里面的数据顺序是不固定的,也就是一个滑块对应着一种顺序,所以如果我们要通过明文伪造加密数据,还需要知道数据存放的顺序,在庞大的字节码中找到数据存放的数据也是一个很大的工程,但是如果是不伪造数据,通过jsdom的环境生成出来的加密数据又过不去滑块。思前想后,我想到一个办法,那就是通过正则匹配来对代码进行改造,找到不同数据生成的地方,对生成后的数据进行修改(对照正常的数据),所以接下来就是通过不断的调试代码,找到代码是如何生成的,找到生成代码的地方,对代码进行修改。如果修改有效,制定正则匹配方案。如此循环,直到生成出来的数据和浏览器抓包得到的数据差不多,能过滑块的环境识别,那么就成功了。然后将整个过程封装成一个函数,传入js代码,自动修改代码,并且eval运行代码得到collect。
这里我就不分析每个数据的意义了,只是提供大概的思路以及方向。如果要定位到某个代码的生成地方,可以先看到在我们进行数据解密的时候,拿到的一些数据:
{"cd":[24,"about:blank?rand=tel:1519713624347","0-0-0-24-*-*-|-*",[],176688296,[],0,0,"",[],0,0,0,1,9,[],0,0,1634221284,0,"Mozilla/5.0 (win32) AppleWebKit/537.36 (KHTML, like Gecko) jsdom/17.0.0","top",259121870,1634221284,0,"?rand=tel:1512991986334",0,"","other",1634221284,"UTF-8",{"cd":[24,"about:blank?rand=tel:1519713624347","0-0-0-24-*-*-|-*",[],176688296,[],0,0,"",[],0,0,0,1,9,[],0,0,1634221284,0,"Mozilla/5.0 (win32) AppleWebKit/537.36 (KHTML, like Gecko) jsdom/17.0.0","top",259121870,1634221284,0,"?rand=tel:1512991986334",0,"","other",1634221284,"UTF-8",[1024,768]
比如上面的数据,第一次打印的时候,还没有[1024,768]这个数据,那么我们就可以在这个数据打印之前,也就是打印完这句话以后,进行单步调试:
{"cd":[24,"about:blank?rand=tel:1519713624347","0-0-0-24-*-*-|-*",[],176688296,[],0,0,"",[],0,0,0,1,9,[],0,0,1634221284,0,"Mozilla/5.0 (win32) AppleWebKit/537.36 (KHTML, like Gecko) jsdom/17.0.0","top",259121870,1634221284,0,"?rand=tel:1512991986334",0,"","other",1634221284,"UTF-8"
通过这种方法,就能跟踪到[1024,768]的来源。当然这只是一种方法,还有别的定位方法,就等着大家去发现了。
调试这里面坑很多,不但要定位生成的地方、制定正则匹配规则,还需要不断去加密提交到滑块服务器去验证生成的数据能不能用,总之就是需要耐心。
破解的核心思路总结起来就是:正则匹配(或是AST)修改特征代码到可运行状态,eval进行调用得到目标值。
0x06 vData参数分析
上次我们讲到了collect的加密方式以及怎么去生成这个参数的思路,现在我们来讲讲另一个加密参数,vData
image-20211015201512985.png
定位过程就不再赘述了,本小节的目的主要是讨论vData的生成方式。
vData是由vm-slide.js生成的,代码结构和生成collect参数的js代码一致,代码如下:
var __TENCENT_CHAOS_STACK = function() { function __TENCENT_CHAOS_VM(g, m, U, n, E, F, Y, c) { var A = !n; g = +g, m = m || [0], n = n || [[this], [{}]], E = E || {}; var w, C = [], K = null; function p() { return function(A, C, K) { return new (Function.bind.apply(A, C)) } .apply(null, arguments) } Function.prototype.bind || (w = [].slice, Function.prototype.bind = function(A) { if ("function" != typeof this) throw new TypeError("bind101"); var C = w.call(arguments, 1) , K = C.length , p = this , Q = function() {} , B = function() { return C.length = K, C.push.apply(C, arguments), p.apply(Q.prototype.isPrototypeOf(this) ? this : A, C) }; return this.prototype && (Q.prototype = this.prototype), B.prototype = new Q, B } ); var Q = [function() { n.push(n[m[g++]][0]) } , function() { var A, C = []; for (A in n.pop()) C.push(A); n.push(C) } , function() { var A = m[g++] , C = A ? n.slice(-A) : []; n.length -= A; A = n.pop(); n.push(A[0][A[1]].apply(A[0], C)) } , function() { n.push([n.pop(), n.pop()].reverse()) } , function() { n.push("") } , function() { n.pop() } , function() { g = m[g++] } , function() { n[n.length - 2] = n[n.length - 2] ^ n.pop() } , function() { n.push(m[g++]) } , , function() { n[n.length - 1] += String.fromCharCode(m[g++]) } , function() { n[n.length - 2] = n[n.length - 2] & n.pop() } , function() { n[n.length - 2] = n[n.length - 2] == n.pop() } , function() { n[n.length - 1] = U[n[n.length - 1]] } , , function() { n[n.length - 1].length ? n.push(n[n.length - 1].shift(), !0) : n.push(undefined, !1) } , function() { return !0 } , function() { n.push(undefined) } , , , function() { n[n.length - 2] = n[n.length - 2] + n.pop() } , function() { n[n.length - 2] = n[n.length - 2] - n.pop() } , , function() { n.push(!n.pop()) } , function() { var A = n[n.length - 2]; A[0][A[1]] = n[n.length - 1] } , function() { var A = m[g++] , C = A ? n.slice(-A) : []; n.length -= A, C.unshift(null); A = n.pop(); n.push(p(A[0][A[1]], C)) } , , , function() { n[n.length - 2] = n[n.length - 2] === n.pop() } , , , function() { n[n.length - 2] = n[n.length - 2] > n.pop() } , function() { n.push([U, n.pop()]) } , function() { K = null } , , function() { C.push([m[g++], n.length, m[g++]]) } , function() { n[n[n.length - 2][0]][0] = n[n.length - 1] } , function() { n[n.length - 2] = n[n.length - 2] % n.pop() } , function() { n[n.length - 2] = n[n.length - 2] / n.pop() } , function() { n.push(n[n.length - 1]) } , function() { n.length = m[g++] } , function() { var A = n.pop() , C = n.pop(); n.push([C[0][C[1]], A]) } , function() { var A = m[g++]; n[A] = n[A] === undefined ? [] : n[A] } , , , function() { n.push(null) } , function() { n[n.length - 2] = n[n.length - 2] n.pop() } , function() { n.push([m[g++]]) } , , function() { C.pop() } , function() { n[n.length - 1] = m[g++] } , function() { n[n.length - 2] = n[n.length - 2] << n.pop() } , function() { n.push(typeof n.pop()) } , , function() { var A = n.pop(); n.push(A[0][A[1]]) } , function() { var A = m[g++] , C = A ? n.slice(-A) : []; n.length -= A, C.unshift(null), n.push(p(n.pop(), C)) } , function() { n[n.length - 2] = n[n.length - 2] | n.pop() } , , function() { for (var K = m[g++], p = [], A = m[g++], C = m[g++], Q = [], B = 0; B < A; B++) p[m[g++]] = n[m[g++]]; for (B = 0; B < C; B++) Q[B] = m[g++]; n.push(function w() { var A = p.slice(0); A[0] = [this], A[1] = [arguments], A[2] = [w]; for (var C = 0; C < Q.length && C < arguments.length; C++) 0 < Q[C] && (A[Q[C]] = [arguments[C]]); return __TENCENT_CHAOS_VM(K, m, U, A, E, F, Y, c) }) } , function() { var A = n.pop(); n.push([n[n.pop()][0], A]) } , function() { var A = m[g++]; n[n.length - 1] && (g = A) } , function() { return !!K } , function() { n[n.length - 2] = n[n.length - 2] >= n.pop() } , function() { n.push(n[n.pop()[0]][0]) } , function() { var A = m[g++] , C = n[n.length - 2 - A]; n[n.length - 2 - A] = n.pop(), n.push(C) } , , function() { var A = m[g++] , C = A ? n.slice(-A) : []; n.length -= A, n.push(n.pop().apply(U, C)) } , function() { n[n.length - 2] = n[n.length - 2] * n.pop() } , function() { n[n.length - 2] = n[n.length - 2] > n.pop() } ]; for (0; ; ) try { for (var B = !1; !B; ) B = Q[m[g++]](); if (0, K) throw K; return A ? (n.pop(), n.slice(3 + __TENCENT_CHAOS_VM.v)) : n.pop() } catch (I) { 0; var o = C.pop(); if (o === undefined) throw I; K = I, g = o[0], n.length = o[1], o[2] && (n[o[2]][0] = K) } } function E(A) { for (var C, K, p = "ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz0123456789+/=".split(""), Q = String(A).replace(/[=]+$/, ""), B = 0, w = 0, g = ""; K = Q.charAt(w++); ~K && (C = B % 4 ? 64 * C + K : K, B++ % 4) && (g += String.fromCharCode(255 & C (-2 * B & 6)))) K = function(A, C, K) { if ("function" == typeof Array.prototype.indexOf) return Array.prototype.indexOf.call(A, C, K); var p; if (null == A) throw new TypeError('"array" is null or not defined'); var Q = Object(A) , B = Q.length > 0; if (0 == B) return -1; if (B <= (K |= 0)) return -1; for (p = Math.max(0 <= K ? K : B - Math.abs(K), 0); p < B; p++) if (p in Q && Q[p] === C) return p; return -1 }(p, K); return g } return __TENCENT_CHAOS_VM.v = 0, __TENCENT_CHAOS_VM(0, function(A) { var C = A[0] , K = A[1] , p = [] , Q = E(C) , B = K.shift() , w = K.shift() , g = 0; function m() { for (; g === B; ) p.push(w), g++, B = K.shift(), w = K.shift() } for (var U = 0; U < Q.length; U++) { var n = Q.charAt(U).charCodeAt(0); m(), p.push(n), g++ } return m(), p }(["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2048, 18542, 18725, 18723, 18900, 18844, 18900, 18922, 18453, 18929, 18372, 18964, 19451, 19031, 19036, 19034, 19447, 19075, 19371, 19083, 19087, 19085, 19094, 19095, 19256, 19254, 19443, 19369, 19443, 19445, 19008, 19452, 18966, 19488, 16855, 19505, 20087, 19602, 20073, 19637, 19666, 19664, 20070, 19700, 20059, 19770, 19774, 19772, 19823, 19824, 19828, 19826, 19838, 19871, 19879, 19877, 19883, 19938, 19943, 19941, 20057, 2e4, 20005, 20003, 20034, 20030, 20033, 20055, 19915, 20060, 19702, 20074, 19604, 20088, 19507, 20105, 20823, 20138, 20813, 20351, 20463, 20364, 20374, 20368, 20441, 20372, 20441, 20377, 20366, 20426, 20430, 20428, 20439, 20464, 20353, 20537, 20797, 20550, 20560, 20554, 20775, 20558, 20775, 20563, 20552, 20584, 20588, 20586, 20606, 20607, 20612, 20610, 20774, 20687, 20691, 20689, 20701, 20734, 20742, 20740, 20746, 20798, 20539, 20814, 20140, 20824, 20107, 20841, 20950, 20951, 20843, 20968, 24257, 20999, 21003, 21001, 21039, 21040, 21137, 21043, 21132, 21054, 21058, 21056, 21084, 21085, 21128, 21126, 21131, 21133, 21045, 21253, 21321, 21322, 21255, 21331, 22025, 21854, 21859, 21857, 21939, 21891, 21896, 21894, 21916, 21937, 21831, 22026, 21333, 22036, 22273, 22116, 22121, 22119, 22269, 22152, 22157, 22155, 22246, 22222, 22227, 22225, 22246, 22237, 22240, 22244, 22269, 22267, 22093, 22274, 22038, 22315, 24234, 22398, 22663, 22411, 22441, 22415, 22660, 22439, 22660, 22444, 22413, 22523, 22526, 22593, 22597, 22595, 22615, 22607, 22611, 22621, 22625, 22623, 22628, 22629, 22655, 22653, 22658, 22664, 22400, 22707, 22715, 22713, 22719, 22728, 22972, 22750, 22755, 22753, 22807, 22889, 22894, 22892, 22968, 22966, 22866, 22973, 22730, 22988, 23004, 23025, 23056, 23091, 23111, 23112, 23140, 23138, 23142, 23148, 23156, 23157, 23181, 23179, 23183, 23184, 23208, 23206, 23224, 23263, 23268, 23266, 23331, 23329, 23240, 23365, 23383, 23381, 23391, 23397, 23727, 23575, 23580, 23578, 23662, 23604, 23608, 23606, 23638, 23660, 23567, 23728, 23399, 23896, 23945, 23929, .5, 23932, 23941, 23939, 23944, 23946, 23898, 24018, 24023, 24021, 24086, 24084, 23995, 24235, 22317, 24258, 20970]]), window)}();__TENCENT_CHAOS_STACK.g = function() { return __TENCENT_CHAOS_STACK.shift()[0]};
在函数调用处下断点:
image-20211019202756322.png
移动滑块,触发断点,其中K参数(PC,此处为调用函数的地址)和A参数(传入参数)分别为:
image-20211019203024158.png
目前首要的是考虑怎么去拿到vData的加密方式,我们再将密文进行解密,分析里面的数据,会更直观,这次我们选择和collect一样的处理方式,就是通过修改代码,让他打印日志信息,暂且将这种行为称之为hook。
我们选择对加法指令进行hook,并查看日志,具体操作如下(这里直接通过浏览器开发者工具进行操作,并没有选择node环境模拟,原因是因为此VM代码涉及到网络请求,选择开发者工具直接进行操作会简单很多):
(1)、首先找到加法指令所在的行(可以看到是89行):
image-20211019203715106.png
(2)在90行(指令执行完成处)行标处右键,选择Add logpoint...
:
image-20211019204215073.png
(3)输入n[n.length - 1]
,然后回车:
image-20211019204337071.png
hook代码就插入完成了,当运行了加法指令时,就会将栈顶的值打印出来,也就是相加以后的结果。我们让代码执行,控制台就自动对代码进行了打印,打印的前部分结果如下:
1VM171:1 2VM172:1 3VM173:1 4VM174:1 5VM175:1 6VM176:1 7VM177:1 8VM178:1 9VM179:1 10VM180:1 11VM181:1 12VM182:1 13VM183:1 14VM184:1 15VM185:1 16VM186:1 17VM187:1 18VM188:1 19VM189:1 20VM190:1 21VM191:1 22VM192:1 23VM193:1 24VM194:1 25VM195:1 26VM196:1 27VM197:1 28VM198:1 29VM199:1 30VM200:1 31VM201:1 tlg=(.*)VM202:1 1VM203:1 2VM204:1 3VM205:1 4VM206:1 1VM207:1 2VM208:1 3VM209:1 4VM210:1 5VM211:1 6VM212:1 7VM213:1 8VM214:1 9VM215:1 10VM216:1 11VM217:1 12VM218:1 13VM219:1 sess=(.*)VM220:1 PVM221:1 1VM222:1 PsVM223:1 2VM224:1 PslVM225:1 3VM226:1 PslPVM227:1 4VM228:1 1VM229:1 2VM230:1 3VM231:1 4VM232:1 5VM233:1 6VM234:1 7VM235:1 1VM236:1 8VM237:1 1VM238:1 2VM239:1 9VM240:1 1VM241:1 2VM242:1 3VM243:1 4VM244:1 10VM245:1 11VM246:1 11,VM247:1 11,tdc,slide,vmVM248:1 ss=VM249:1 ss=11%2Ctdc%2Cslide%2CvmVM250:1 1VM251:1 env=VM252:1 env=0VM253:1 2VM254:1 py=VM255:1 py=0VM256:1 3VM257:1 inf=VM258:1 inf=iframeVM259:1 4VM260:1 key=VM261:1 key=PslPVM262:1 5VM263:1 cLod=VM264:1 cLod=loadTDCVM265:1 6VM266:1 tp=VM267:1 tp=5547380864951241219VM268:1 7VM269:1 version=VM270:1 version=2VM271:1 8VM272:1 ss=11%2Ctdc%2Cslide%2Cvm&env=0&py=0&inf=iframe&key=PslP&cLod=loadTDC&tp=5547380864951241219&version=2kVM273:1 ss=11%2Ctdc%2Cslide%2Cvm&env=0&py=0&inf=iframe&key=PslP&cLod=loadTDC&tp=5547380864951241219&version=2kkVM274:1 ss=11%2Ctdc%2Cslide%2Cvm&env=0&py=0&inf=iframe&key=PslP&cLod=loadTDC&tp=5547380864951241219&version=2kkkVM275:1 ss=11%2Ctdc%2Cslide%2Cvm&env=0&py=0&inf=iframe&key=PslP&cLod=loadTDC&tp=5547380864951241219&version=2kkkkVM276:1 ss=11%2Ctdc%2Cslide%2Cvm&env=0&py=0&inf=iframe&key=PslP&cLod=loadTDC&tp=5547380864951241219&version=2kkkkkVM277:1 ss=11%2Ctdc%2Cslide%2Cvm&env=0&py=0&inf=iframe&key=PslP&cLod=loadTDC&tp=5547380864951241219&version=2kkkkkkVM278:1 ss=11%2Ctdc%2Cslide%2Cvm&env=0&py=0&inf=iframe&key=PslP&cLod=loadTDC&tp=5547380864951241219&version=2kkkkkkkVM279:1 ss=11%2Ctdc%2Cslide%2Cvm&env=0&py=0&inf=iframe&key=PslP&cLod=loadTDC&tp=5547380864951241219&version=2kkkkkkkkVM280:1 ss=11%2Ctdc%2Cslide%2Cvm&env=0&py=0&inf=iframe&key=PslP&cLod=loadTDC&tp=5547380864951241219&version=2kkkkkkkkkVM281:1 ss=11%2Ctdc%2Cslide%2Cvm&env=0&py=0&inf=iframe&key=PslP&cLod=loadTDC&tp=5547380864951241219&version=2kkkkkkkkkkVM282:1 ss=11%2Ctdc%2Cslide%2Cvm&env=0&py=0&inf=iframe&key=PslP&cLod=loadTDC&tp=5547380864951241219&version=2kkkkkkkkkkkVM283:1 0VM284:1 1VM285:1 4VM286:1 2VM287:1 8VM288:1 3VM289:1 12VM290:1 42VM291:1 5VM293:1 9VM294:1 6VM295:1 13VM296:1 7VM297:1 1VM298:1 8VM299:1 10VM300:1 9VM301:1 14VM302:1 10VM303:1 2VM304:1 11VM305:1 6VM306:1 12VM307:1 15VM308:1 13VM309:1 3VM310:1 14VM311:1 7VM312:1 15VM313:1 11VM314:1 16VM315:1 s1t2%dCscs=2l1C%2VM316:1 16VM318:1 1VM319:1 20VM320:1 2VM321:1 24VM322:1 3VM323:1 28VM324:1 4VM325:1 21VM326:1 5VM327:1 25VM328:1 6VM329:1 29VM330:1 7VM331:1 17VM332:1 8VM333:1 26VM334:1 9VM335:1 30VM336:1 10VM337:1 18VM338:1 11VM339:1 22VM340:1 12VM341:1 31VM342:1 13VM343:1 19VM344:1 14VM345:1 23VM346:1 15VM347:1 27VM348:1 16VM349:1 s1t2%dCscs=2l1C%i2&=Ce0dn&evp%mv2VM350:1 32VM352:1 1VM353:1 36VM354:1 2VM355:1 40VM356:1 3VM357:1 44VM358:1 4VM359:1 37VM360:1 5VM361:1 41VM362:1 6VM363:1 45VM364:1 7VM365:1 33VM366:1 8VM367:1 42VM368:1 9VM369:1 46VM370:1 10VM371:1 34VM372:1 11VM373:1 38VM374:1 12VM375:1 47VM376:1 13VM377:1 35VM378:1 14VM379:1 39VM380:1 15VM381:1 43VM382:1 16VM383:1 s1t2%dCscs=2l1C%i2&=Ce0dn&evp%mvyiimnfe=r&0fk&=a2VM384:1 48VM386:1 1VM387:1 52VM388:1 2VM389:1 56VM390:1 3VM391:1 60VM392:1 4VM393:1 53VM394:1 5VM395:1 57VM396:1 6VM397:1 61VM398:1 7VM399:1 49VM400:1 8VM401:1 58VM402:1 9VM403:1 62VM404:1 10VM405:1 50VM406:1 11VM407:1 54VM408:1 12VM409:1 63VM410:1 13VM411:1 51VM412:1 14VM413:1 55VM414:1 15VM415:1 59VM416:1 16VM417:1 s1t2%dCscs=2l1C%i2&=Ce0dn&evp%mvyiimnfe=r&0fk&=aesc=lLlyoo=PaP&d2VM418:1 64VM420:1 1VM421:1 68VM422:1 2VM423:1 72VM424:1 3VM425:1 76VM426:1 4VM427:1 69VM428:1 5VM429:1 73VM430:1 6VM431:1 77VM432:1 7VM433:1 65VM434:1 8VM435:1 74VM436:1 9VM437:1 78VM438:1 10VM439:1 66VM440:1 11VM441:1 70VM442:1 12VM443:1 79VM444:1 13VM445:1 67VM446:1 14VM447:1 71VM448:1 15VM449:1 75VM450:1 16VM451:1 s1t2%dCscs=2l1C%i2&=Ce0dn&evp%mvyiimnfe=r&0fk&=aesc=lLlyoo=PaP&dd&53t58T40Dp8C=72VM452:1 80VM454:1 1VM455:1 84VM456:1 2VM457:1 88VM458:1 3VM459:1 92VM460:1 4VM461:1 85VM462:1 5VM463:1 89VM464:1 6VM465:1 93VM466:1 7VM467:1 81VM468:1 8VM469:1 90VM470:1 9VM471:1 94VM472:1 10VM473:1 82VM474:1 11VM475:1 86VM476:1 12VM477:1 95VM478:1 13VM479:1 83VM480:1 14VM481:1 87VM482:1 15VM483:1 91VM484:1 16VM485:1 s1t2%dCscs=2l1C%i2&=Ce0dn&evp%mvyiimnfe=r&0fk&=aesc=lLlyoo=PaP&dd&53t58T40Dp8C=7642v81e49r94s51&2VM486:1 96VM488:1 1VM489:1 100VM490:1 2VM491:1 104VM492:1 3VM493:1 108VM494:1 4VM495:1 101VM496:1 5VM497:1 105VM498:1 6VM499:1 109VM500:1 7VM501:1 97VM502:1 8VM503:1 106VM504:1 9VM505:1 110VM506:1 10VM507:1 98VM508:1 11VM509:1 102VM510:1 12VM511:1 111VM512:1 13VM513:1 99VM514:1 14VM515:1 103VM516:1 15VM517:1 107VM518:1 16VM519:1 s1t2%dCscs=2l1C%i2&=Ce0dn&evp%mvyiimnfe=r&0fk&=aesc=lLlyoo=PaP&dd&53t58T40Dp8C=7642v81e49r94s51&i2kkkkkokknkk=kkVM520:1 112VM521:1 1VM522:1 1VM523:1 2VM524:1 3VM525:1 4VM526:1 1VM527:1 2VM528:1 1VM529:1 2VM530:1 3VM531:1 4VM532:1 2VM533:1 3VM534:1 1VM535:1 2VM536:1 3VM537:1 4VM538:1 3VM539:1 4VM540:1 1VM541:1 2VM542:1 3VM543:1 42VM544:1 4VM546:1 1VM547:1 2VM548:1 3VM549:1 4VM550:1 4VM551:1 8VM552:1 1VM553:1 2VM554:1 3VM555:1 4VM556:1 2867838358VM557:1 845493299VM558:1 -889275624VM559:1 -2336555152VM560:1 2654435769VM561:1 4338529007VM562:1 3915755972VM563:1 2054546322VM564:1 3466441244VM565:1 -2149118810VM566:1 -2190016853VM567:1 5308871538
可以看到里面有一些有用的信息,如下:
VM201:1 tlg=(.*) //正则表达式,取出tlgVM219:1 sess=(.*) //正则表达式,取出tlgVM282:1 ss=11%2Ctdc%2Cslide%2Cvm&env=0&py=0&inf=iframe&key=PslP&cLod=loadTDC&tp=5547380864951241219&version=2kkkkkkkkkkk //很可能是加密之前的明文,而多出来的k也应该是补齐方式VM519:1 s1t2%dCscs=2l1C%i2&=Ce0dn&evp%mvyiimnfe=r&0fk&=aesc=lLlyoo=PaP&dd&53t58T40Dp8C=7642v81e49r94s51&i2kkkkkokknkk=kk //被乱序的字符串VM560:1 2654435769 //熟悉的delta常量
既然找到了delta常量,那么我们只需要添加一个条件断点,当栈顶值为delta常量时断点断下来,操作和日志断点类似,右键的时候选择Add conditional breakpoint...
image-20211019211318256.png
添加条件n[n.length - 1]==2654435769
:
image-20211019211419211.png
然后滑动滑块,断点断下来,此时PC(对应__TENCENT_CHAOS_VM函数第一个传参,我这里变量名是g)的值是15355:
image-20211019211706995.png
现在我们将此时代码的PC值拿到了,现在我们要考虑如何将密钥取出来,在什么地方可以取得密钥。由于这个地方的tea加密我们不确定是不是被魔改过的,所以也只能老老实实的调试,将每一步进行的操作记录下来,还原成JavaScript代码,调试也没有什么特别的技巧,最重要的还是耐心,核心代码还原如下(固定密钥):
function EncryptBlock(EncryData){ var Key = [845493299, 812005475, 825582135, 1684093238]; var x = EncryData[0]; var y = EncryData[1]; var sum = 0; var delta = 0x9E3779B9; for (var i = 0; i < 32; i++){ x += (((y << 4) ^ (y > 5)) + y) ^ (sum + Key[sum & 3]); sum += delta; y += (((x << 4) ^ (x > 5)) + x) ^ (sum + Key[(sum 11) & 3]); } return [x, y];}
根据加密代码,反推得到解密代码:
function DecryptBlock(DecryData){ var Key = [845493299, 812005475, 825582135, 1684093238]; var x = DecryData[0]; var y = DecryData[1]; var sum = 0x9E3779B9 * 32; var delta = 0x9E3779B9; for (var i = 0; i < 32; i++){ y -= (((x << 4) ^ (x > 5)) + x) ^ (sum + Key[(sum 11) & 3]); sum -= delta; x -= (((y << 4) ^ (y > 5)) + y) ^ (sum + Key[sum & 3]); } return [x, y];}
将两段代码替换collect的加解密函数即可对密文进行解密.
现在我们来解决被乱序的字符串的算法:
字符串乱序一般都会有一个映射表,可参考以下代码:
var msg = "0123"var map = [3,2,1,0]var res = ""var mlength = msg.lengthfor(var i = 0; i < mlength; i++){ res += msg.charAt(keyMap[i])}//执行结果为"3210"
我们对charAt函数进行hook,代码如下(直接复制后放在控制台回车即可):
var hookCharAt = String.prototype.charAt;String.prototype.charAt = function (index) { var res = hookCharAt.call(this, index) console.log(this, index) return res}
hook日志如下:
String {"s07MEo6T3CWctUHFfxqCxvdirgIfUxLEAMZ-WzFaOH4dcvrWUM…q_k1pclUMwrBvVe5HK4zeAhCIsxn8WHMOc4VKWJwJ4X-U-Q**"} 1VM22081:4 String {"s07MEo6T3CWctUHFfxqCxvdirgIfUxLEAMZ-WzFaOH4dcvrWUM…q_k1pclUMwrBvVe5HK4zeAhCIsxn8WHMOc4VKWJwJ4X-U-Q**"} 7VM22081:4 String {"s07MEo6T3CWctUHFfxqCxvdirgIfUxLEAMZ-WzFaOH4dcvrWUM…q_k1pclUMwrBvVe5HK4zeAhCIsxn8WHMOc4VKWJwJ4X-U-Q**"} 8VM22081:4 String {"s07MEo6T3CWctUHFfxqCxvdirgIfUxLEAMZ-WzFaOH4dcvrWUM…q_k1pclUMwrBvVe5HK4zeAhCIsxn8WHMOc4VKWJwJ4X-U-Q**"} 4VM22081:4 String {"0abcdefghijklmnop"} 11//乱序从这里开始VM22081:4 String {"py=0&cLod=loadTDC&inf=iframe&ss=11%2Ctdc%2Cslide%2…tp=7250156632690052586&version=2&env=0kkkkkkkkkkk"} 0VM22081:4 String {"py=0&cLod=loadTDC&inf=iframe&ss=11%2Ctdc%2Cslide%2…tp=7250156632690052586&version=2&env=0kkkkkkkkkkk"} 4VM22081:4 String {"py=0&cLod=loadTDC&inf=iframe&ss=11%2Ctdc%2Cslide%2…tp=7250156632690052586&version=2&env=0kkkkkkkkkkk"} 8VM22081:4 String {"py=0&cLod=loadTDC&inf=iframe&ss=11%2Ctdc%2Cslide%2…tp=7250156632690052586&version=2&env=0kkkkkkkkkkk"} 12VM22081:4 String {"py=0&cLod=loadTDC&inf=iframe&ss=11%2Ctdc%2Cslide%2…tp=7250156632690052586&version=2&env=0kkkkkkkkkkk"} 5VM22081:4 String {"py=0&cLod=loadTDC&inf=iframe&ss=11%2Ctdc%2Cslide%2…tp=7250156632690052586&version=2&env=0kkkkkkkkkkk"} 9VM22081:4 String {"py=0&cLod=loadTDC&inf=iframe&ss=11%2Ctdc%2Cslide%2…tp=7250156632690052586&version=2&env=0kkkkkkkkkkk"} 13VM22081:4 String {"py=0&cLod=loadTDC&inf=iframe&ss=11%2Ctdc%2Cslide%2…tp=7250156632690052586&version=2&env=0kkkkkkkkkkk"} 1VM22081:4 String {"py=0&cLod=loadTDC&inf=iframe&ss=11%2Ctdc%2Cslide%2…tp=7250156632690052586&version=2&env=0kkkkkkkkkkk"} 10VM22081:4 String {"py=0&cLod=loadTDC&inf=iframe&ss=11%2Ctdc%2Cslide%2…tp=7250156632690052586&version=2&env=0kkkkkkkkkkk"} 14VM22081:4 String {"py=0&cLod=loadTDC&inf=iframe&ss=11%2Ctdc%2Cslide%2…tp=7250156632690052586&version=2&env=0kkkkkkkkkkk"} 2VM22081:4 String {"py=0&cLod=loadTDC&inf=iframe&ss=11%2Ctdc%2Cslide%2…tp=7250156632690052586&version=2&env=0kkkkkkkkkkk"} 6VM22081:4 String {"py=0&cLod=loadTDC&inf=iframe&ss=11%2Ctdc%2Cslide%2…tp=7250156632690052586&version=2&env=0kkkkkkkkkkk"} 15VM22081:4 String {"py=0&cLod=loadTDC&inf=iframe&ss=11%2Ctdc%2Cslide%2…tp=7250156632690052586&version=2&env=0kkkkkkkkkkk"} 3VM22081:4 String {"py=0&cLod=loadTDC&inf=iframe&ss=11%2Ctdc%2Cslide%2…tp=7250156632690052586&version=2&env=0kkkkkkkkkkk"} 7VM22081:4 String {"py=0&cLod=loadTDC&inf=iframe&ss=11%2Ctdc%2Cslide%2…tp=7250156632690052586&version=2&env=0kkkkkkkkkkk"} 11VM22081:4 String {"py=0&cLod=loadTDC&inf=iframe&ss=11%2Ctdc%2Cslide%2…tp=7250156632690052586&version=2&env=0kkkkkkkkkkk"} 16VM22081:4 String {"py=0&cLod=loadTDC&inf=iframe&ss=11%2Ctdc%2Cslide%2…tp=7250156632690052586&version=2&env=0kkkkkkkkkkk"} 20VM22081:4 String {"py=0&cLod=loadTDC&inf=iframe&ss=11%2Ctdc%2Cslide%2…tp=7250156632690052586&version=2&env=0kkkkkkkkkkk"} 24VM22081:4 String {"py=0&cLod=loadTDC&inf=iframe&ss=11%2Ctdc%2Cslide%2…tp=7250156632690052586&version=2&env=0kkkkkkkkkkk"} 28VM22081:4 String {"py=0&cLod=loadTDC&inf=iframe&ss=11%2Ctdc%2Cslide%2…tp=7250156632690052586&version=2&env=0kkkkkkkkkkk"} 21VM22081:4 String {"py=0&cLod=loadTDC&inf=iframe&ss=11%2Ctdc%2Cslide%2…tp=7250156632690052586&version=2&env=0kkkkkkkkkkk"} 25VM22081:4 String {"py=0&cLod=loadTDC&inf=iframe&ss=11%2Ctdc%2Cslide%2…tp=7250156632690052586&version=2&env=0kkkkkkkkkkk"} 29VM22081:4 String {"py=0&cLod=loadTDC&inf=iframe&ss=11%2Ctdc%2Cslide%2…tp=7250156632690052586&version=2&env=0kkkkkkkkkkk"} 17VM22081:4 String {"py=0&cLod=loadTDC&inf=iframe&ss=11%2Ctdc%2Cslide%2…tp=7250156632690052586&version=2&env=0kkkkkkkkkkk"} 26VM22081:4 String {"py=0&cLod=loadTDC&inf=iframe&ss=11%2Ctdc%2Cslide%2…tp=7250156632690052586&version=2&env=0kkkkkkkkkkk"} 30VM22081:4 String {"py=0&cLod=loadTDC&inf=iframe&ss=11%2Ctdc%2Cslide%2…tp=7250156632690052586&version=2&env=0kkkkkkkkkkk"} 18VM22081:4 String {"py=0&cLod=loadTDC&inf=iframe&ss=11%2Ctdc%2Cslide%2…tp=7250156632690052586&version=2&env=0kkkkkkkkkkk"} 22VM22081:4 String {"py=0&cLod=loadTDC&inf=iframe&ss=11%2Ctdc%2Cslide%2…tp=7250156632690052586&version=2&env=0kkkkkkkkkkk"} 31VM22081:4 String {"py=0&cLod=loadTDC&inf=iframe&ss=11%2Ctdc%2Cslide%2…tp=7250156632690052586&version=2&env=0kkkkkkkkkkk"} 19VM22081:4 String {"py=0&cLod=loadTDC&inf=iframe&ss=11%2Ctdc%2Cslide%2…tp=7250156632690052586&version=2&env=0kkkkkkkkkkk"} 23VM22081:4 String {"py=0&cLod=loadTDC&inf=iframe&ss=11%2Ctdc%2Cslide%2…tp=7250156632690052586&version=2&env=0kkkkkkkkkkk"} 27VM22081:4 String {"py=0&cLod=loadTDC&inf=iframe&ss=11%2Ctdc%2Cslide%2…tp=7250156632690052586&version=2&env=0kkkkkkkkkkk"} 32VM22081:4 String {"py=0&cLod=loadTDC&inf=iframe&ss=11%2Ctdc%2Cslide%2…tp=7250156632690052586&version=2&env=0kkkkkkkkkkk"} 36VM22081:4 String {"py=0&cLod=loadTDC&inf=iframe&ss=11%2Ctdc%2Cslide%2…tp=7250156632690052586&version=2&env=0kkkkkkkkkkk"} 40VM22081:4 String {"py=0&cLod=loadTDC&inf=iframe&ss=11%2Ctdc%2Cslide%2…tp=7250156632690052586&version=2&env=0kkkkkkkkkkk"} 44VM22081:4 String {"py=0&cLod=loadTDC&inf=iframe&ss=11%2Ctdc%2Cslide%2…tp=7250156632690052586&version=2&env=0kkkkkkkkkkk"} 37VM22081:4 String {"py=0&cLod=loadTDC&inf=iframe&ss=11%2Ctdc%2Cslide%2…tp=7250156632690052586&version=2&env=0kkkkkkkkkkk"} 41VM22081:4 String {"py=0&cLod=loadTDC&inf=iframe&ss=11%2Ctdc%2Cslide%2…tp=7250156632690052586&version=2&env=0kkkkkkkkkkk"} 45VM22081:4 String {"py=0&cLod=loadTDC&inf=iframe&ss=11%2Ctdc%2Cslide%2…tp=7250156632690052586&version=2&env=0kkkkkkkkkkk"} 33VM22081:4 String {"py=0&cLod=loadTDC&inf=iframe&ss=11%2Ctdc%2Cslide%2…tp=7250156632690052586&version=2&env=0kkkkkkkkkkk"} 42VM22081:4 String {"py=0&cLod=loadTDC&inf=iframe&ss=11%2Ctdc%2Cslide%2…tp=7250156632690052586&version=2&env=0kkkkkkkkkkk"} 46VM22081:4 String {"py=0&cLod=loadTDC&inf=iframe&ss=11%2Ctdc%2Cslide%2…tp=7250156632690052586&version=2&env=0kkkkkkkkkkk"} 34VM22081:4 String {"py=0&cLod=loadTDC&inf=iframe&ss=11%2Ctdc%2Cslide%2…tp=7250156632690052586&version=2&env=0kkkkkkkkkkk"} 38VM22081:4 String {"py=0&cLod=loadTDC&inf=iframe&ss=11%2Ctdc%2Cslide%2…tp=7250156632690052586&version=2&env=0kkkkkkkkkkk"} 47VM22081:4 String {"py=0&cLod=loadTDC&inf=iframe&ss=11%2Ctdc%2Cslide%2…tp=7250156632690052586&version=2&env=0kkkkkkkkkkk"} 35VM22081:4 String {"py=0&cLod=loadTDC&inf=iframe&ss=11%2Ctdc%2Cslide%2…tp=7250156632690052586&version=2&env=0kkkkkkkkkkk"} 39VM22081:4 String {"py=0&cLod=loadTDC&inf=iframe&ss=11%2Ctdc%2Cslide%2…tp=7250156632690052586&version=2&env=0kkkkkkkkkkk"} 43VM22081:4 String {"py=0&cLod=loadTDC&inf=iframe&ss=11%2Ctdc%2Cslide%2…tp=7250156632690052586&version=2&env=0kkkkkkkkkkk"} 48VM22081:4 String {"py=0&cLod=loadTDC&inf=iframe&ss=11%2Ctdc%2Cslide%2…tp=7250156632690052586&version=2&env=0kkkkkkkkkkk"} 52VM22081:4 String {"py=0&cLod=loadTDC&inf=iframe&ss=11%2Ctdc%2Cslide%2…tp=7250156632690052586&version=2&env=0kkkkkkkkkkk"} 56VM22081:4 String {"py=0&cLod=loadTDC&inf=iframe&ss=11%2Ctdc%2Cslide%2…tp=7250156632690052586&version=2&env=0kkkkkkkkkkk"} 60VM22081:4 String {"py=0&cLod=loadTDC&inf=iframe&ss=11%2Ctdc%2Cslide%2…tp=7250156632690052586&version=2&env=0kkkkkkkkkkk"} 53VM22081:4 String {"py=0&cLod=loadTDC&inf=iframe&ss=11%2Ctdc%2Cslide%2…tp=7250156632690052586&version=2&env=0kkkkkkkkkkk"} 57VM22081:4 String {"py=0&cLod=loadTDC&inf=iframe&ss=11%2Ctdc%2Cslide%2…tp=7250156632690052586&version=2&env=0kkkkkkkkkkk"} 61VM22081:4 String {"py=0&cLod=loadTDC&inf=iframe&ss=11%2Ctdc%2Cslide%2…tp=7250156632690052586&version=2&env=0kkkkkkkkkkk"} 49VM22081:4 String {"py=0&cLod=loadTDC&inf=iframe&ss=11%2Ctdc%2Cslide%2…tp=7250156632690052586&version=2&env=0kkkkkkkkkkk"} 58VM22081:4 String {"py=0&cLod=loadTDC&inf=iframe&ss=11%2Ctdc%2Cslide%2…tp=7250156632690052586&version=2&env=0kkkkkkkkkkk"} 62VM22081:4 String {"py=0&cLod=loadTDC&inf=iframe&ss=11%2Ctdc%2Cslide%2…tp=7250156632690052586&version=2&env=0kkkkkkkkkkk"} 50VM22081:4 String {"py=0&cLod=loadTDC&inf=iframe&ss=11%2Ctdc%2Cslide%2…tp=7250156632690052586&version=2&env=0kkkkkkkkkkk"} 54VM22081:4 String {"py=0&cLod=loadTDC&inf=iframe&ss=11%2Ctdc%2Cslide%2…tp=7250156632690052586&version=2&env=0kkkkkkkkkkk"} 63VM22081:4 String {"py=0&cLod=loadTDC&inf=iframe&ss=11%2Ctdc%2Cslide%2…tp=7250156632690052586&version=2&env=0kkkkkkkkkkk"} 51VM22081:4 String {"py=0&cLod=loadTDC&inf=iframe&ss=11%2Ctdc%2Cslide%2…tp=7250156632690052586&version=2&env=0kkkkkkkkkkk"} 55VM22081:4 String {"py=0&cLod=loadTDC&inf=iframe&ss=11%2Ctdc%2Cslide%2…tp=7250156632690052586&version=2&env=0kkkkkkkkkkk"} 59VM22081:4 String {"py=0&cLod=loadTDC&inf=iframe&ss=11%2Ctdc%2Cslide%2…tp=7250156632690052586&version=2&env=0kkkkkkkkkkk"} 64VM22081:4 String {"py=0&cLod=loadTDC&inf=iframe&ss=11%2Ctdc%2Cslide%2…tp=7250156632690052586&version=2&env=0kkkkkkkkkkk"} 68VM22081:4 String {"py=0&cLod=loadTDC&inf=iframe&ss=11%2Ctdc%2Cslide%2…tp=7250156632690052586&version=2&env=0kkkkkkkkkkk"} 72VM22081:4 String {"py=0&cLod=loadTDC&inf=iframe&ss=11%2Ctdc%2Cslide%2…tp=7250156632690052586&version=2&env=0kkkkkkkkkkk"} 76VM22081:4 String {"py=0&cLod=loadTDC&inf=iframe&ss=11%2Ctdc%2Cslide%2…tp=7250156632690052586&version=2&env=0kkkkkkkkkkk"} 69VM22081:4 String {"py=0&cLod=loadTDC&inf=iframe&ss=11%2Ctdc%2Cslide%2…tp=7250156632690052586&version=2&env=0kkkkkkkkkkk"} 73VM22081:4 String {"py=0&cLod=loadTDC&inf=iframe&ss=11%2Ctdc%2Cslide%2…tp=7250156632690052586&version=2&env=0kkkkkkkkkkk"} 77VM22081:4 String {"py=0&cLod=loadTDC&inf=iframe&ss=11%2Ctdc%2Cslide%2…tp=7250156632690052586&version=2&env=0kkkkkkkkkkk"} 65VM22081:4 String {"py=0&cLod=loadTDC&inf=iframe&ss=11%2Ctdc%2Cslide%2…tp=7250156632690052586&version=2&env=0kkkkkkkkkkk"} 74VM22081:4 String {"py=0&cLod=loadTDC&inf=iframe&ss=11%2Ctdc%2Cslide%2…tp=7250156632690052586&version=2&env=0kkkkkkkkkkk"} 78VM22081:4 String {"py=0&cLod=loadTDC&inf=iframe&ss=11%2Ctdc%2Cslide%2…tp=7250156632690052586&version=2&env=0kkkkkkkkkkk"} 66VM22081:4 String {"py=0&cLod=loadTDC&inf=iframe&ss=11%2Ctdc%2Cslide%2…tp=7250156632690052586&version=2&env=0kkkkkkkkkkk"} 70VM22081:4 String {"py=0&cLod=loadTDC&inf=iframe&ss=11%2Ctdc%2Cslide%2…tp=7250156632690052586&version=2&env=0kkkkkkkkkkk"} 79VM22081:4 String {"py=0&cLod=loadTDC&inf=iframe&ss=11%2Ctdc%2Cslide%2…tp=7250156632690052586&version=2&env=0kkkkkkkkkkk"} 67VM22081:4 String {"py=0&cLod=loadTDC&inf=iframe&ss=11%2Ctdc%2Cslide%2…tp=7250156632690052586&version=2&env=0kkkkkkkkkkk"} 71VM22081:4 String {"py=0&cLod=loadTDC&inf=iframe&ss=11%2Ctdc%2Cslide%2…tp=7250156632690052586&version=2&env=0kkkkkkkkkkk"} 75VM22081:4 String {"py=0&cLod=loadTDC&inf=iframe&ss=11%2Ctdc%2Cslide%2…tp=7250156632690052586&version=2&env=0kkkkkkkkkkk"} 80VM22081:4 String {"py=0&cLod=loadTDC&inf=iframe&ss=11%2Ctdc%2Cslide%2…tp=7250156632690052586&version=2&env=0kkkkkkkkkkk"} 84VM22081:4 String {"py=0&cLod=loadTDC&inf=iframe&ss=11%2Ctdc%2Cslide%2…tp=7250156632690052586&version=2&env=0kkkkkkkkkkk"} 88VM22081:4 String {"py=0&cLod=loadTDC&inf=iframe&ss=11%2Ctdc%2Cslide%2…tp=7250156632690052586&version=2&env=0kkkkkkkkkkk"} 92VM22081:4 String {"py=0&cLod=loadTDC&inf=iframe&ss=11%2Ctdc%2Cslide%2…tp=7250156632690052586&version=2&env=0kkkkkkkkkkk"} 85VM22081:4 String {"py=0&cLod=loadTDC&inf=iframe&ss=11%2Ctdc%2Cslide%2…tp=7250156632690052586&version=2&env=0kkkkkkkkkkk"} 89VM22081:4 String {"py=0&cLod=loadTDC&inf=iframe&ss=11%2Ctdc%2Cslide%2…tp=7250156632690052586&version=2&env=0kkkkkkkkkkk"} 93VM22081:4 String {"py=0&cLod=loadTDC&inf=iframe&ss=11%2Ctdc%2Cslide%2…tp=7250156632690052586&version=2&env=0kkkkkkkkkkk"} 81VM22081:4 String {"py=0&cLod=loadTDC&inf=iframe&ss=11%2Ctdc%2Cslide%2…tp=7250156632690052586&version=2&env=0kkkkkkkkkkk"} 90VM22081:4 String {"py=0&cLod=loadTDC&inf=iframe&ss=11%2Ctdc%2Cslide%2…tp=7250156632690052586&version=2&env=0kkkkkkkkkkk"} 94VM22081:4 String {"py=0&cLod=loadTDC&inf=iframe&ss=11%2Ctdc%2Cslide%2…tp=7250156632690052586&version=2&env=0kkkkkkkkkkk"} 82VM22081:4 String {"py=0&cLod=loadTDC&inf=iframe&ss=11%2Ctdc%2Cslide%2…tp=7250156632690052586&version=2&env=0kkkkkkkkkkk"} 86VM22081:4 String {"py=0&cLod=loadTDC&inf=iframe&ss=11%2Ctdc%2Cslide%2…tp=7250156632690052586&version=2&env=0kkkkkkkkkkk"} 95VM22081:4 String {"py=0&cLod=loadTDC&inf=iframe&ss=11%2Ctdc%2Cslide%2…tp=7250156632690052586&version=2&env=0kkkkkkkkkkk"} 83VM22081:4 String {"py=0&cLod=loadTDC&inf=iframe&ss=11%2Ctdc%2Cslide%2…tp=7250156632690052586&version=2&env=0kkkkkkkkkkk"} 87VM22081:4 String {"py=0&cLod=loadTDC&inf=iframe&ss=11%2Ctdc%2Cslide%2…tp=7250156632690052586&version=2&env=0kkkkkkkkkkk"} 91VM22081:4 String {"py=0&cLod=loadTDC&inf=iframe&ss=11%2Ctdc%2Cslide%2…tp=7250156632690052586&version=2&env=0kkkkkkkkkkk"} 96VM22081:4 String {"py=0&cLod=loadTDC&inf=iframe&ss=11%2Ctdc%2Cslide%2…tp=7250156632690052586&version=2&env=0kkkkkkkkkkk"} 100VM22081:4 String {"py=0&cLod=loadTDC&inf=iframe&ss=11%2Ctdc%2Cslide%2…tp=7250156632690052586&version=2&env=0kkkkkkkkkkk"} 104VM22081:4 String {"py=0&cLod=loadTDC&inf=iframe&ss=11%2Ctdc%2Cslide%2…tp=7250156632690052586&version=2&env=0kkkkkkkkkkk"} 108VM22081:4 String {"py=0&cLod=loadTDC&inf=iframe&ss=11%2Ctdc%2Cslide%2…tp=7250156632690052586&version=2&env=0kkkkkkkkkkk"} 101VM22081:4 String {"py=0&cLod=loadTDC&inf=iframe&ss=11%2Ctdc%2Cslide%2…tp=7250156632690052586&version=2&env=0kkkkkkkkkkk"} 105VM22081:4 String {"py=0&cLod=loadTDC&inf=iframe&ss=11%2Ctdc%2Cslide%2…tp=7250156632690052586&version=2&env=0kkkkkkkkkkk"} 109VM22081:4 String {"py=0&cLod=loadTDC&inf=iframe&ss=11%2Ctdc%2Cslide%2…tp=7250156632690052586&version=2&env=0kkkkkkkkkkk"} 97VM22081:4 String {"py=0&cLod=loadTDC&inf=iframe&ss=11%2Ctdc%2Cslide%2…tp=7250156632690052586&version=2&env=0kkkkkkkkkkk"} 106VM22081:4 String {"py=0&cLod=loadTDC&inf=iframe&ss=11%2Ctdc%2Cslide%2…tp=7250156632690052586&version=2&env=0kkkkkkkkkkk"} 110VM22081:4 String {"py=0&cLod=loadTDC&inf=iframe&ss=11%2Ctdc%2Cslide%2…tp=7250156632690052586&version=2&env=0kkkkkkkkkkk"} 98VM22081:4 String {"py=0&cLod=loadTDC&inf=iframe&ss=11%2Ctdc%2Cslide%2…tp=7250156632690052586&version=2&env=0kkkkkkkkkkk"} 102VM22081:4 String {"py=0&cLod=loadTDC&inf=iframe&ss=11%2Ctdc%2Cslide%2…tp=7250156632690052586&version=2&env=0kkkkkkkkkkk"} 111VM22081:4 String {"py=0&cLod=loadTDC&inf=iframe&ss=11%2Ctdc%2Cslide%2…tp=7250156632690052586&version=2&env=0kkkkkkkkkkk"} 99VM22081:4 String {"py=0&cLod=loadTDC&inf=iframe&ss=11%2Ctdc%2Cslide%2…tp=7250156632690052586&version=2&env=0kkkkkkkkkkk"} 103VM22081:4 String {"py=0&cLod=loadTDC&inf=iframe&ss=11%2Ctdc%2Cslide%2…tp=7250156632690052586&version=2&env=0kkkkkkkkkkk"} 107VM22081:4 String {"GV5yc1_twaSpHPOE7R3jv9fqC2L-0TxMi4FuolBAbQeIgJU*XzZKWkDNh6n8dsrmY"} 17VM22081:4 String {"GV5yc1_twaSpHPOE7R3jv9fqC2L-0TxMi4FuolBAbQeIgJU*XzZKWkDNh6n8dsrmY"} 46VM22081:4 String {"GV5yc1_twaSpHPOE7R3jv9fqC2L-0TxMi4FuolBAbQeIgJU*XzZKWkDNh6n8dsrmY"} 6VM22081:4 String {"GV5yc1_twaSpHPOE7R3jv9fqC2L-0TxMi4FuolBAbQeIgJU*XzZKWkDNh6n8dsrmY"} 39VM22081:4 String 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{"GV5yc1_twaSpHPOE7R3jv9fqC2L-0TxMi4FuolBAbQeIgJU*XzZKWkDNh6n8dsrmY"} 55VM22081:4 String {"GV5yc1_twaSpHPOE7R3jv9fqC2L-0TxMi4FuolBAbQeIgJU*XzZKWkDNh6n8dsrmY"} 58VM22081:4 String {"GV5yc1_twaSpHPOE7R3jv9fqC2L-0TxMi4FuolBAbQeIgJU*XzZKWkDNh6n8dsrmY"} 16VM22081:4 String {"GV5yc1_twaSpHPOE7R3jv9fqC2L-0TxMi4FuolBAbQeIgJU*XzZKWkDNh6n8dsrmY"} 55VM22081:4 String {"GV5yc1_twaSpHPOE7R3jv9fqC2L-0TxMi4FuolBAbQeIgJU*XzZKWkDNh6n8dsrmY"} 2VM22081:4 String {"GV5yc1_twaSpHPOE7R3jv9fqC2L-0TxMi4FuolBAbQeIgJU*XzZKWkDNh6n8dsrmY"} 22VM22081:4 String {"GV5yc1_twaSpHPOE7R3jv9fqC2L-0TxMi4FuolBAbQeIgJU*XzZKWkDNh6n8dsrmY"} 13VM22081:4 String {"GV5yc1_twaSpHPOE7R3jv9fqC2L-0TxMi4FuolBAbQeIgJU*XzZKWkDNh6n8dsrmY"} 33VM22081:4 String {"GV5yc1_twaSpHPOE7R3jv9fqC2L-0TxMi4FuolBAbQeIgJU*XzZKWkDNh6n8dsrmY"} 7VM22081:4 String {"GV5yc1_twaSpHPOE7R3jv9fqC2L-0TxMi4FuolBAbQeIgJU*XzZKWkDNh6n8dsrmY"} 30VM22081:4 String {"GV5yc1_twaSpHPOE7R3jv9fqC2L-0TxMi4FuolBAbQeIgJU*XzZKWkDNh6n8dsrmY"} 38VM22081:4 String {"GV5yc1_twaSpHPOE7R3jv9fqC2L-0TxMi4FuolBAbQeIgJU*XzZKWkDNh6n8dsrmY"} 11VM22081:4 String {"GV5yc1_twaSpHPOE7R3jv9fqC2L-0TxMi4FuolBAbQeIgJU*XzZKWkDNh6n8dsrmY"} 3VM22081:4 String {"GV5yc1_twaSpHPOE7R3jv9fqC2L-0TxMi4FuolBAbQeIgJU*XzZKWkDNh6n8dsrmY"} 60VM22081:4 String {"GV5yc1_twaSpHPOE7R3jv9fqC2L-0TxMi4FuolBAbQeIgJU*XzZKWkDNh6n8dsrmY"} 43VM22081:4 String {"GV5yc1_twaSpHPOE7R3jv9fqC2L-0TxMi4FuolBAbQeIgJU*XzZKWkDNh6n8dsrmY"} 8VM22081:4 String {"GV5yc1_twaSpHPOE7R3jv9fqC2L-0TxMi4FuolBAbQeIgJU*XzZKWkDNh6n8dsrmY"} 30VM22081:4 String {"GV5yc1_twaSpHPOE7R3jv9fqC2L-0TxMi4FuolBAbQeIgJU*XzZKWkDNh6n8dsrmY"} 39VM22081:4 String {"GV5yc1_twaSpHPOE7R3jv9fqC2L-0TxMi4FuolBAbQeIgJU*XzZKWkDNh6n8dsrmY"} 26VM22081:4 String {"GV5yc1_twaSpHPOE7R3jv9fqC2L-0TxMi4FuolBAbQeIgJU*XzZKWkDNh6n8dsrmY"} 30VM22081:4 String {"GV5yc1_twaSpHPOE7R3jv9fqC2L-0TxMi4FuolBAbQeIgJU*XzZKWkDNh6n8dsrmY"} 21VM22081:4 String {"GV5yc1_twaSpHPOE7R3jv9fqC2L-0TxMi4FuolBAbQeIgJU*XzZKWkDNh6n8dsrmY"} 10VM22081:4 String {"GV5yc1_twaSpHPOE7R3jv9fqC2L-0TxMi4FuolBAbQeIgJU*XzZKWkDNh6n8dsrmY"} 12VM22081:4 String {"GV5yc1_twaSpHPOE7R3jv9fqC2L-0TxMi4FuolBAbQeIgJU*XzZKWkDNh6n8dsrmY"} 14VM22081:4 String {"GV5yc1_twaSpHPOE7R3jv9fqC2L-0TxMi4FuolBAbQeIgJU*XzZKWkDNh6n8dsrmY"} 35VM22081:4 String {"GV5yc1_twaSpHPOE7R3jv9fqC2L-0TxMi4FuolBAbQeIgJU*XzZKWkDNh6n8dsrmY"} 21VM22081:4 String {"GV5yc1_twaSpHPOE7R3jv9fqC2L-0TxMi4FuolBAbQeIgJU*XzZKWkDNh6n8dsrmY"} 1VM22081:4 String {"GV5yc1_twaSpHPOE7R3jv9fqC2L-0TxMi4FuolBAbQeIgJU*XzZKWkDNh6n8dsrmY"} 57VM22081:4 String {"GV5yc1_twaSpHPOE7R3jv9fqC2L-0TxMi4FuolBAbQeIgJU*XzZKWkDNh6n8dsrmY"} 59VM22081:4 String {"GV5yc1_twaSpHPOE7R3jv9fqC2L-0TxMi4FuolBAbQeIgJU*XzZKWkDNh6n8dsrmY"} 3VM22081:4 String {"GV5yc1_twaSpHPOE7R3jv9fqC2L-0TxMi4FuolBAbQeIgJU*XzZKWkDNh6n8dsrmY"} 19VM22081:4 String {"GV5yc1_twaSpHPOE7R3jv9fqC2L-0TxMi4FuolBAbQeIgJU*XzZKWkDNh6n8dsrmY"} 25VM22081:4 String {"GV5yc1_twaSpHPOE7R3jv9fqC2L-0TxMi4FuolBAbQeIgJU*XzZKWkDNh6n8dsrmY"} 2VM22081:4 String {"GV5yc1_twaSpHPOE7R3jv9fqC2L-0TxMi4FuolBAbQeIgJU*XzZKWkDNh6n8dsrmY"} 28VM22081:4 String {"GV5yc1_twaSpHPOE7R3jv9fqC2L-0TxMi4FuolBAbQeIgJU*XzZKWkDNh6n8dsrmY"} 62VM22081:4 String {"GV5yc1_twaSpHPOE7R3jv9fqC2L-0TxMi4FuolBAbQeIgJU*XzZKWkDNh6n8dsrmY"} 0VM22081:4 String {"GV5yc1_twaSpHPOE7R3jv9fqC2L-0TxMi4FuolBAbQeIgJU*XzZKWkDNh6n8dsrmY"} 32VM22081:4 String {"GV5yc1_twaSpHPOE7R3jv9fqC2L-0TxMi4FuolBAbQeIgJU*XzZKWkDNh6n8dsrmY"} 7VM22081:4 String {"GV5yc1_twaSpHPOE7R3jv9fqC2L-0TxMi4FuolBAbQeIgJU*XzZKWkDNh6n8dsrmY"} 1VM22081:4 String {"GV5yc1_twaSpHPOE7R3jv9fqC2L-0TxMi4FuolBAbQeIgJU*XzZKWkDNh6n8dsrmY"} 15VM22081:4 String {"GV5yc1_twaSpHPOE7R3jv9fqC2L-0TxMi4FuolBAbQeIgJU*XzZKWkDNh6n8dsrmY"} 45VM22081:4 String {"GV5yc1_twaSpHPOE7R3jv9fqC2L-0TxMi4FuolBAbQeIgJU*XzZKWkDNh6n8dsrmY"} 17VM22081:4 String {"GV5yc1_twaSpHPOE7R3jv9fqC2L-0TxMi4FuolBAbQeIgJU*XzZKWkDNh6n8dsrmY"} 37VM22081:4 String {"GV5yc1_twaSpHPOE7R3jv9fqC2L-0TxMi4FuolBAbQeIgJU*XzZKWkDNh6n8dsrmY"} 57VM22081:4 String {"GV5yc1_twaSpHPOE7R3jv9fqC2L-0TxMi4FuolBAbQeIgJU*XzZKWkDNh6n8dsrmY"} 19VM22081:4 String {"GV5yc1_twaSpHPOE7R3jv9fqC2L-0TxMi4FuolBAbQeIgJU*XzZKWkDNh6n8dsrmY"} 29VM22081:4 String {"GV5yc1_twaSpHPOE7R3jv9fqC2L-0TxMi4FuolBAbQeIgJU*XzZKWkDNh6n8dsrmY"} 6VM22081:4 String {"GV5yc1_twaSpHPOE7R3jv9fqC2L-0TxMi4FuolBAbQeIgJU*XzZKWkDNh6n8dsrmY"} 46VM22081:4 String {"GV5yc1_twaSpHPOE7R3jv9fqC2L-0TxMi4FuolBAbQeIgJU*XzZKWkDNh6n8dsrmY"} 10VM22081:4 String {"GV5yc1_twaSpHPOE7R3jv9fqC2L-0TxMi4FuolBAbQeIgJU*XzZKWkDNh6n8dsrmY"} 14VM22081:4 String {"GV5yc1_twaSpHPOE7R3jv9fqC2L-0TxMi4FuolBAbQeIgJU*XzZKWkDNh6n8dsrmY"} 30VM22081:4 String {"GV5yc1_twaSpHPOE7R3jv9fqC2L-0TxMi4FuolBAbQeIgJU*XzZKWkDNh6n8dsrmY"} 9VM22081:4 String {"GV5yc1_twaSpHPOE7R3jv9fqC2L-0TxMi4FuolBAbQeIgJU*XzZKWkDNh6n8dsrmY"} 58VM22081:4 String {"GV5yc1_twaSpHPOE7R3jv9fqC2L-0TxMi4FuolBAbQeIgJU*XzZKWkDNh6n8dsrmY"} 16VM22081:4 String {"GV5yc1_twaSpHPOE7R3jv9fqC2L-0TxMi4FuolBAbQeIgJU*XzZKWkDNh6n8dsrmY"} 48VM22081:4 String {"GV5yc1_twaSpHPOE7R3jv9fqC2L-0TxMi4FuolBAbQeIgJU*XzZKWkDNh6n8dsrmY"} 46VM22081:4 String {"GV5yc1_twaSpHPOE7R3jv9fqC2L-0TxMi4FuolBAbQeIgJU*XzZKWkDNh6n8dsrmY"} 37VM22081:4 String {"GV5yc1_twaSpHPOE7R3jv9fqC2L-0TxMi4FuolBAbQeIgJU*XzZKWkDNh6n8dsrmY"} 32VM22081:4 String {"GV5yc1_twaSpHPOE7R3jv9fqC2L-0TxMi4FuolBAbQeIgJU*XzZKWkDNh6n8dsrmY"} 64VM22081:4 String {"GV5yc1_twaSpHPOE7R3jv9fqC2L-0TxMi4FuolBAbQeIgJU*XzZKWkDNh6n8dsrmY"} 64
可以看到,index被打印了出来,其中String {"0abcdefghijklmnop"} 11
这个charAt的结果刚好是字母k,对应明文的padding,明文py=0&cLod=loadTDC&inf=iframe&ss=11%2Ctdc%2Cslide%2…tp=7250156632690052586&version=2&env=0
的长度为101,补齐了11个字符,补齐的码表为0abcdefghijklmnop
,补齐后长度为16的倍数,所以应该是以16个字符为一轮进行乱序,所以我们只需要得到前16位的index,就能还原乱序,正序算法,算法还原如下:
function seqEncode(msg){ var tmp = msg.length % 16; var ch = "0abcdefghijklmnop".charAt(tmp) while(tmp&&(16 - tmp)){ msg += ch; tmp++; } var keyMap = [0, 4, 8, 12, 5, 9, 13, 1, 10, 14, 2, 6, 15, 3, 7, 11]; tmp = msg.length 4; var res = ""; for(var i = 0; i < tmp; i++){ var cut = msg.slice(i*16,i*16+16); console.log(cut) for(var j = 0; j < 16; j++){ console.log() res += cut.charAt(keyMap[j]) } } return res;}function seqDecode(msg){ var keyMap = [0, 7, 10, 13, 1, 4, 11, 14, 2, 5, 8, 15, 3, 6, 9, 12]; var tmp = msg.length 4; var res = ""; for(var i = 0; i < tmp; i++){ var cut = msg.slice(i*16,i*16+16); for(var j = 0; j < 16; j++){ res += cut.charAt(keyMap[j]) } } return res;}
接下来先看到最后一段:
VM22081:4 String {"GV5yc1_twaSpHPOE7R3jv9fqC2L-0TxMi4FuolBAbQeIgJU*XzZKWkDNh6n8dsrmY"} 48
其中GV5yc1_twaSpHPOE7R3jv9fqC2L-0TxMi4FuolBAbQeIgJU*XzZKWkDNh6n8dsrmY
为base64码表,将这个base64码表对标准的base64编码码表进行替换,然后将密文解码,再解密,再正序,发现可以还原到最初的明文,加密部分就完成了。
现在进行明文参数分析,完整的明文如下:
py=0&cLod=loadTDC&inf=iframe&ss=11%2Ctdc%2Cslide%2Cvm&key=0T3E&tp=7250156632690052586&version=2&env=0kkkkkkkkkkk
现在应该就只剩下最后的key字段,key=0T3E
。
通过上面的hook日志可以发现,前几行:
String {"s07MEo6T3CWctUHFfxqCxvdirgIfUxLEAMZ-WzFaOH4dcvrWUM…q_k1pclUMwrBvVe5HK4zeAhCIsxn8WHMOc4VKWJwJ4X-U-Q**"} 1VM22081:4 String {"s07MEo6T3CWctUHFfxqCxvdirgIfUxLEAMZ-WzFaOH4dcvrWUM…q_k1pclUMwrBvVe5HK4zeAhCIsxn8WHMOc4VKWJwJ4X-U-Q**"} 7VM22081:4 String {"s07MEo6T3CWctUHFfxqCxvdirgIfUxLEAMZ-WzFaOH4dcvrWUM…q_k1pclUMwrBvVe5HK4zeAhCIsxn8WHMOc4VKWJwJ4X-U-Q**"} 8VM22081:4 String {"s07MEo6T3CWctUHFfxqCxvdirgIfUxLEAMZ-WzFaOH4dcvrWUM…q_k1pclUMwrBvVe5HK4zeAhCIsxn8WHMOc4VKWJwJ4X-U-Q**"} 4
1784实际上对应提交参数里面的tlg,这个参数为collect的长度,s07MEo6T3CWctUHFfxqCxvdirgIfUxLEAMZ-WzFaOH4dcvrWUM…q_k1pclUMwrBvVe5HK4zeAhCIsxn8WHMOc4VKWJwJ4X-U-Q**
正好是服务器返回参数sess,所以key的算法还原如下:
function getKey(sess,tlg){ tlg = tlg + ""; var length = tlg.length; var res = ""; for(var i = 0; i < length; i++){ res += sess.charAt(tlg.slice(i,i+1)) } return res;}
0x07 结束语
至此,两个核心参数的加密就还原完成了,剩下的就是模拟参数生成,就能实现对验证码进行破解。其中这个滑块并没有对滑动数据以及鼠标移动数据进行相关校验,所以为空值也能过去,重点是collect里面的环境参数的校验以及还原。从刚开始接触这个vm到滑块的自动破解大概一共用了四五天左右,对jsvmp的了解又更深了一些,特别是执行流程和一些核心的设计思想。打算在近期内看看能不能研发一款js代码的虚拟化工具出来,如果有什么成果,会再次与大家分享!
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