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echo094 avatar echo094 commented on September 17, 2024 1

这是一个使用特定版本的obfuscator混淆的代码(>=2.15.4 javascript-obfuscator/javascript-obfuscator@5683e75, <2.19.0 javascript-obfuscator/javascript-obfuscator@9da81ca)。此时StringArray仍使用简单的数组定义,但StringArrayCallsWrapper使用了两层函数的形式。

对于这种StringArray没有明确特征的版本,应该使用Fallback模式通过匹配StringArrayRotateFunction定位。

但是这个脚本的StringArrayRotateFunction与后续业务代码合并到了一个表达式中,导致将业务代码错误的识别为了混淆代码。

以上是第一个问题。

from decode-js.

echo094 avatar echo094 commented on September 17, 2024

这个脚本应该是在obfuscator基础上的魔改版本(或者说在使用另一个工具混淆后,使用了obfuscator二次混淆),有些string-array的编码格式和obfuscator的任何版本都对不上。

在解完第一次混淆后,你会发现代码中还会有数十处(局部的)string-array方式混淆,我并不觉得这是手动提取了一段段代码分别混淆的产物,应该是有专门的工具全自动操作。

因此,你需要反复调用obfuscator插件,直到出现Cannot find string list!,表示已经找不到更多的string-array。

from decode-js.

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