Baby native library reversing + reversible encryption operation.
full writeup [here](https://blackbeard666.github.io/pwn_exhibit/content/2020_CTF/InterIUTCTF/android_cybermalware_writeup.html) (https://blackbeard666.github.io/pwn_exhibit/content/2020_CTF/InterIUTCTF/android_cybermalware_writeup.html)