KosenXmasCTF 🔍 Problems Reversing RGB countdown dummy first_asm strings_binary Pwn write_where_what illgal_jump match_flag easy_heap super_type beginners_shell pinzoro dead_or_alive Web bad_path your_name sailor_or_blazor Misc what_is_include let_us_walk_zip Crypto do_you_know_RSA? advanced_caesar do_you_like_CBC magic_mirror bad_hash