CSAW CTF Quals 2014
25.09.2014 16:26, by Dor1s
We've got the following binary and its source code: xorcise.
$ file xorcise xorcise: ELF 32-bit LSB executable, Intel 80386, version 1 (SYSV), dynamically linked (uses shared libs), for GNU/Linux 2.6.32, not stripped
Looking attentively at source code you can find this interesting moment in decipher function: