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.

Year

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CTF

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Must have Source / Docker Writeup

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Challenge	CTF	Weight	Category	Has
Ez_Pwn #signed-integer-overflow	LYKNCTF 2026	–	Pwn	files wu 1
positive #integer-overflow #signed-integer-overflow	CrewCTF 2023	20.33	Blockchain	files wu 3