$ cat writeup.md…
$ cat writeup.md…
ringzer0ctf
Task: PE32+ anti-debugging reverse task (RingZer0 'See No Evil' Part 2) — one of five levels in a shared binary. Solution: statically ignore the CreateThread anti-debug handler, recover the level-2 magic, derive the DES key from CryptoAPI MD5, and DES-ECB decrypt embedded ciphertext to reveal the flag.
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