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

Country

Must have Source / Docker Writeup

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Challenge	CTF	Weight	Category	Has
Password_recovery #xorshift #xor	Glacier 2023	24.32	Reverse	files wu 1
Many_Xor_Shift #xorshift #gf2-matrix #matrix-exponentiation	WaniCTF 2024	24.99	Crypto	files wu 1
ESTR #execution-trace #xorshift	Zh3r0 2021	–	Reverse	files src