javascript又一解密过程,推荐的,会这个基本上好多都能解决了第1/2页

javascript又一解密过程,推荐的,会这个基本上好多都能解决了
[常规准备]

1、首先尝试掌握代码的大体结构。

这需要一定的经验。首先是做hutia已经做了的事情(虽然这一步在这个具体的情况下也可以跳过,但是不推荐如此),先把编码的文字显形。有很多办法可选,有一种办法是把编码的字符串写到textarea里。

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[Ctrl+A 全选 注:如需引入外部Js需刷新才能执行]

于是就得到了如下代码:


window["eval"](function(j1,J2,o$dTaJ3,La4,TpmmvDvtz5,aOuL$Vsk$6){TpmmvDvtz5=function(o$dTaJ3){return(o$dTaJ335?window["String"]["fromCharCode"](o$dTaJ3+29):o$dTaJ3["toString"](36))};if(!''["replace"](/^/,window["String"])){while(o$dTaJ3--)aOuL$Vsk$6[TpmmvDvtz5(o$dTaJ3)]=La4[o$dTaJ3]||TpmmvDvtz5(o$dTaJ3);La4=[function(TpmmvDvtz5){return aOuL$Vsk$6[TpmmvDvtz5]}];TpmmvDvtz5=function(){return'\w+'};o$dTaJ3=1;};while(o$dTaJ3--)if(La4[o$dTaJ3])j1=j1["replace"](new window["RegExp"]('\b'+TpmmvDvtz5(o$dTaJ3)+'\b','g'),La4[o$dTaJ3]);return j1;}('3R(2X(p,a,c,k,e,d){e=2X(c){2Y(c35?34.3P(c+29):c.3Q(36))};2Z(!\'\'.30(/^/,34)){33(c--)d[e(c)]=k[c]||e(c);k=[2X(e){2Y d[e]}];e=2X(){2Y\'\\w+\'};c=1};33(c--)2Z(k[c])p=p.30(31 3V(\'\\b\'+e(c)+\'\\b\',\'g\'),k[c]);2Y p}(\'o J=H Q("P.1J");o w=" !\\"#$%&\\'()*+,-./1I:;?@1H";o w=w+"[\\\\]^1K`1N{|}~";o N="1M";n v(i){h="";t(j=0;j>(j*8+4))&Z)+N.K((i>>(j*8))&Z)}p h}J.V("1L=f:/1C/1B/1A/1D/#1G.1F;1E=;1O={1Y 1X 1W (*.1Z)};");o 18="26 * 25 M 24 1R=1 L 1=1 L 1g=1g L \\'M\\'=\\'M\\'";n e(x,y){p((x&R)+(y&R))^(x&U)^(y&U)}o z=H Q("P.1Q");z.V(18,J);n l(A,B,C,D,X,S,T){q=e(e(A,(B&C)|(~B&D)),e(X,T));p e((q>(u-S))&(G.F(2,S)-1)),B)}n g(A,B,C,D,X,S,T){q=e(e(A,(B&D)|(C&~D)),e(X,T));p e((q>(u-S))&(G.F(2,S)-1)),B)}n m(A,B,C,D,X,S,T){q=e(e(A,B^C^D),e(X,T));p e((q>(u-S))&(G.F(2,S)-1)),B)}n k(A,B,C,D,X,S,T){q=e(e(A,C^(B|~D)),e(X,T));p e((q>(u-S))&(G.F(2,S)-1)),B)}n 1P(){W(I(Y.O("1S").1f)==z.1b(2)&&I(Y.O("1V").1f)==z.1b(1)){1U("1T")}}n I(r){s=(((r.E+8)>>6)+1)
[Ctrl+A 全选 注:如需引入外部Js需刷新才能执行]

window["eval"]("XXX") 其实就是 window.eval("XXX")的另一种写法。

我们要关心的是作为eval()方法的参数的代码的结构。

把这些代码稍微整理一下(可用带语法高亮的编辑器,也可通过批量替换字符进行代码的格式化,使成对的{}、''和""显得突出),这样就能够看出代码的大致结构如下。


代码如下:

function(j1,J2,picknick,La4,oddver,outputver)
{

oddver=function(picknick)
{
return(picknick<J2?"":oddver(parseInt(picknick/J2)))+((picknick=picknick%J2)>35?String.fromCharCode(picknick+29):picknick.toString(36))
}

if(true)
{
while(picknick--)outputver[oddver(picknick)]=La4[picknick]||oddver(picknick);

La4=[function(oddver){return outputver[oddver]}];

oddver=function()
{
return '\w+'
}
picknick=1
}
while(picknick--)if(La4[picknick])j1=j1.replace(new RegExp('\b'+oddver(picknick)+'\b','g'),La4[picknick]);

return j1
}(……)

那么整个代码的结构就相当于这个样子:


代码如下:

<script>eval(function(a,b,c){alert(a);alert(b);alert(c)}(1,2,3))</script>

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