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
Deep_Down #gif-steganography #palette-steganography	UMassCTF 2026	65.95	Misc	files wu 1
Invisible_Ink #gif-steganography #transparency	Wargames.MY 2024	–	Misc	files wu 1