If we call printf with that string and set the , we get the canary printed. Thus we extend the chain:
: Pwn / Binary Exploitation (Linux x86‑64) Difficulty : Medium‑Hard (≈ 1800–2200 points) Tags : pwn , ret2libc , partial‑overwrite , format‑string , ASLR , NX , RELRO , PIE felis daemon
Do not look for horns. Look for the third eyelid. And if you see script there, do not be afraid. Be grateful. Somewhere, a car did not hit you. A pipe did not burst. A diagnosis was delayed. And all it cost you was your goddamn peace and quiet. If we call printf with that string and