关于逆向工程:JS-逆向-03

hook eval && bypass native code check
return "function eval() { [native code] }"

经典hook

var a=eval+""var _eval=evaleval=function(arg){    console.log(arg)    return _eval(arg)}eval.toString=function(){return "function eval() { [native code] }"}var _old=Function.prototype.toString.call;console.log(_old);Function.prototype.toString.call=function(arg){    if(arg==eval){        return "function eval() { [native code] }"    }    return _old.call(this,arg);}// console.log(Function.prototype.toString.call(eval))console.log(Function.prototype.toString.call(RegExp))