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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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6 challenges · browse all techniques

Challenge	CTF	Weight	Category	Has
The_Black_Talon	DEFCON 2026 Quals	63.22	Crypto	files
rfc1149b	DEFCON 2026 Quals	63.22	Crypto	files
back-to-qoo	DEFCON 2021 Quals	80.92	Crypto	files
nooombers	DEFCON 2021 Quals	80.92	Crypto	files
qoo-or-ooo	DEFCON 2021 Quals	80.92	Crypto	files
smart-cryptooo	DEFCON 2021 Quals	80.92	Crypto	files