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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Must have Source / Docker Writeup

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Challenge	CTF	Weight	Category	Has
oneline6ryp7o #lattice #modular-arithmetic #mersenne-modulus	SekaiCTF 2026	79.25	Crypto	files wu 1