Bypass visual basic password, reverse obfuscation algorithm, undo some excel protection and finally get the flag.

[Full writeup here](https://theromanxpl0it.github.io/ctf_3ds2017/2017/12/21/stringobfuscator.html)

Original writeup (https://theromanxpl0it.github.io/ctf_3ds2017/2017/12/21/stringobfuscator.html).