Challenges

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

Difficulty Beginner Easy Medium Hard Insane

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Higher weight ≈ harder, more prestigious event.

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Challenge	CTF	Weight	Category	Has
SMS #custom-hash-collision #substitute-mix-shift	3kCTF 2021	24.14	Crypto	files wu 1
crypto_warmup	3kCTF 2021	24.14	Crypto	files wu 1
ASR	3kCTF 2021	24.14	Crypto	files
Digital	3kCTF 2021	24.14	Crypto	files
secure_roots	3kCTF 2021	24.14	Crypto	files