Rating: 5.0

Please, do not write just a link to original writeup here.

Original writeup (https://giocher.com/words/2017/05/01/defcon-ctf-quals-writeups.html#enlightenment).
vientMay 13, 2017, 11 p.m.

Very nice solution! I saw different exit codes in crackmes but didn't pay attention, your solution is elegant and easy.