Challenges

Category Web Pwn Reverse Crypto Forensics Misc OSINT Stego Blockchain Hardware Mobile

Difficulty Beginner Easy Medium Hard Insane

CTFtime weight

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Higher weight ≈ harder, more prestigious event.

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Challenge	CTF	Weight	Category	Has
TRUNC #ecdsa-signature-forgery #signature-malleability	Crypto 2021	36.00	Misc	files wu 1
Vending_Machine #ecdsa #biased-nonce #signature-malleability #python-hash-collision #lattice	PwnMe 2025 Quals	24.95	Crypto	files wu 1