前回 [CodeGate 2016] Pwnable490 OldSchool ELF 32bit、動的リンク、SSPとNX有効。 $ file oldschool oldschool: ELF 32-bit LSB executable, Intel 80386, version 1 (SYSV), dynamically linked, interpreter /lib/ld-linux.so.2, for GNU/Linux 2.6.32, …