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
F_K #brainfuck #timing-side-channel	ScriptCTF 2026	–	Reverse	files wu 1
Memory #timing-side-channel	IrisCTF 2024	24.59	Pwn	files wu 1
timemachine #timing-side-channel #bruteforce	rgbCTF 2020	19.74	Misc	files wu 1