Reversing Advanced

[dreamhack] rev-basic-0

rev-basic-0ida64로 chall0.exe를 디컴파일 했다.ida64 → open → chall0.exe → main → [tab] click main()을 hex-ray(TAB)로 디컴파일해서 코드를 확인해보자.int __cdecl main(int argc, const char **argv, const char **envp){ char v4[256]; // [rsp+20h] [rbp-118h] BYREF memset(v4, 0, sizeof(v4)); printf("Input : "); sub_1400011F0("%256s", v4); if ( (unsigned int)sub_140001000(v4) ) puts("Correct"); else puts("Wrong"); ..