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Artifacts

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2 items with this tag

CTF Writeupmedium

Vipère

Exploit Python format string injection to traverse internal objects, extract bytecode constants from a hidden function, then reverse a leet speak dictionary to reconstruct the flag.

CTF Writeuphard

Quick Maffs

Recover three RSA-encrypted messages by brute-forcing a small secret exponent and solving the resulting polynomial system with Grobner basis computation in SageMath.