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

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Must have Source / Docker Writeup

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Challenge	CTF	Weight	Category	Has
Double_Hint_RSA	tkbctf 2026	25.00	Crypto	files
El_Dorado	tkbctf 2026	25.00	Crypto	files
Expensive_Operator	tkbctf 2026	25.00	Crypto	files
Faulty_AES	tkbctf 2026	25.00	Crypto	files
Faulty_SHA	tkbctf 2026	25.00	Crypto	files
RANDOM_IN_THE_FUTURE.	tkbctf 2026	25.00	Crypto	files
Single_Hint_RSA	tkbctf 2026	25.00	Crypto	files