以前对黑客很崇拜,黑客的世界无比精彩。最近为了炫耀,想起了这段特殊的代码。

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这是一段js代码,把它放到你的控制台里面运行,看看发生了什么?

这段代码来着于这个网站转码得到:http://www.jsfuck.com/   

源码:

alert("hello")

 

  这是一个黑客奇葩的想法。

  在黑客行为中,你的js代码可能被关键词检测,于是考虑躲避关键词检测的想法,例如 eval等关键词。

  1、想了各种方法来规避这个检测。

  2、把方法写成通用的程序。

  3、把包含的字符做到极致,最后只剩下 ()+[]!  这六个字符。

 

这里是它的百科,感兴趣可以去了解下:https://en.wikipedia.org/wiki/JSFuck

用途:

1、脚本注入时防止过滤

2、一定程度加密关键代码(生成代码很长,不适合加密大量代码。只能一定程度上加密,不能依赖)

3、装逼用(我最中意的用途)

结论:转换后本质依然是javascript,通过javascript的一些性质来生成,具体实现可以看这里的代码https://github.com/aemkei/jsfuck

 

 posted on 2016-07-14 19:14  南宫千寻  阅读(14642)  评论(0编辑  收藏  举报