Write up link: https://github.com/j0nathanj/CTF-WriteUps/blob/master/kaspersky-ctf-2017/Crypto/Bad-Calculations/README.md

Have fun!

Original writeup (https://github.com/j0nathanj/CTF-WriteUps/blob/master/kaspersky-ctf-2017/Crypto/Bad-Calculations/README.md).