#FireshellCTF2019 Hey, a weird hacker encrypted my files! Please help me! He likes games! Good luck! 問題ファイルは https://github.com/theoldmoon0602/2019-crypto-all-writeups/blob/4151058f977024d86e99f63bab1c1de23e57ba48/Fireshell_CTF_2019…