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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CTF

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Must have Source / Docker Writeup

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Challenge	CTF	Weight	Category	Has
Hidden_Signal	upCTF 2026	24.42	Crypto	files
LH_RH	upCTF 2026	24.42	Crypto	files
Weird_Equations	upCTF 2026	24.42	Crypto	files
vibedns	upCTF 2026	24.42	Crypto	files
xSTFs_Decryption_Capsule	upCTF 2026	24.42	Crypto	files