This challenge gives statically compiled x64 ELF binary which implements dynamic linking by itself. And there are a lot of anti reversing like self modifying, code obfuscation.

This challenge gives ELF core dump and encryped flag. Challenge purpose is finding the flag decryption routine and gathering information from core dump.

맥에서 컴퓨터 패킷 잡기 위해서 burp suite를 깔아보았다.

GF(2)에서의 뺄셈이 덧셈과 같은 이유를 알아보자.

Participated as LeaveCat, Ranked 10th.
I solved 4 reverse challenge. (magic, simple-vm, simple-re, babyre2)