[CSAW 2015] Back on the event [EKOPARTY PRE-CTF 2015] [Cry50 – Classic crypto] Write Up [EKOPARTY PRE-CTF 2015] [Cry200 – Perfect security] Write Up [EKOPARTY PRE-CTF 2015] [Web200 – Safebox] Write Up [EKOPARTY PRE-CTF 2015] [Rev200 – Reversing the APC cache] Write Up