New Challenges

This page contains lists of recent and most difficult challenges. To play the challenges, please go to the challenges section.
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Recently Released
CategoryChallengePointsSolves
CTF Archive Do you have good eyes? (Breizh CTF) 0 6 solves
CTF Archive RSATogether (ECSC 2024 (Italy)) 0 4 solves
CTF Archive Authentification 1 (Breizh CTF) 0 6 solves
CTF Archive One Round Crypto (ECSC 2024 (Italy)) 0 3 solves
CTF Archive Greatest Common Multiple (CODEGATE CTF) 0 3 solves
CTF Archive Verilicious (Cyber Apocalypse 2025) 0 8 solves
CTF Archive OffTopic (ECSC 2024 (Italy)) 0 7 solves
CTF Archive Authentification 2 (Breizh CTF) 0 5 solves
CTF Archive U-turn (Breizh CTF) 0 6 solves
CTF Archive Quo vadis? (ECSC 2024 (Italy)) 0 4 solves
CTF Archive Smithing contest (ECSC 2024 (Italy)) 0 4 solves
CTF Archive ECLCG (HITCON CTF) 0 13 solves
CTF Archive Sus (ImaginaryCTF) 0 20 solves
CTF Archive Share (HITCON CTF) 0 12 solves
CTF Archive Leet Universe (ImaginaryCTF (Daily)) 0 24 solves
CTF Archive Hyper512 (HITCON CTF) 0 10 solves
CTF Archive Maybe Someday (GoogleCTF) 0 10 solves
CTF Archive Hamiltonicity 2 (CryptoHack) 0 91 solves
CTF Archive Fischlin's Transformation (CryptoHack) 0 93 solves
CTF Archive OR Proof (CryptoHack) 0 220 solves
CTF Archive Ticket Maestro (CryptoHack) 0 71 solves
CTF Archive Additional problems (CSC Belgium) 0 20 solves
CTF Archive Hamiltonicity (CryptoHack) 0 159 solves
Symmetric Ciphers Pad Thai 80 539 solves
Symmetric Ciphers The Good, The Pad, The Ugly 100 404 solves
Symmetric Ciphers Oracular Spectacular 150 188 solves
Hash Functions Merkle Trees 25 416 solves
Elliptic Curves Checkpoint 150 143 solves
Elliptic Curves An Evil Twisted Mind 175 127 solves
Elliptic Curves A Twisted Mind 80 187 solves
Elliptic Curves An Exceptional Twisted Mind 125 124 solves
Isogenies Introduction to Isogenies 10 530 solves
Isogenies Montgomery Curves 30 307 solves
Isogenies Where's the Supersingular Curve 25 351 solves
Isogenies Image Point Arithmetic 30 344 solves
Isogenies DLOG on the Surface 40 246 solves
Isogenies The j-invariant 20 443 solves
Isogenies Better than Linear 85 169 solves
Isogenies Meet me in the Claw 120 129 solves
Isogenies André Encoding 80 163 solves
Isogenies Dual Masters 90 138 solves
Isogenies What's My Kernel 70 178 solves
Isogenies Abelian SIDH 90 152 solves
Isogenies A True Genus 175 115 solves
Isogenies Secret Exponents 60 192 solves
Isogenies Special Isogenies 30 200 solves
Isogenies Twisted CSIDH Isogenies 70 188 solves
Isogenies Prime Power Isogenies 50 199 solves
Isogenies CSIDH Key Exchange 90 177 solves
Isogenies Composite Isogenies 60 236 solves
 


Least Solved
CategoryChallengePointsSolves
CTF Archive One Round Crypto (ECSC 2024 (Italy)) 0 3 solves
CTF Archive Greatest Common Multiple (CODEGATE CTF) 0 3 solves
CTF Archive Quo vadis? (ECSC 2024 (Italy)) 0 4 solves
CTF Archive RSATogether (ECSC 2024 (Italy)) 0 4 solves
CTF Archive Smithing contest (ECSC 2024 (Italy)) 0 4 solves
CTF Archive Authentification 2 (Breizh CTF) 0 5 solves
CTF Archive Do you have good eyes? (Breizh CTF) 0 6 solves
CTF Archive U-turn (Breizh CTF) 0 6 solves
CTF Archive Authentification 1 (Breizh CTF) 0 6 solves
CTF Archive OffTopic (ECSC 2024 (Italy)) 0 7 solves
CTF Archive diffecient (SekaiCTF) 0 8 solves
CTF Archive Verilicious (Cyber Apocalypse 2025) 0 8 solves
CTF Archive Hyper512 (HITCON CTF) 0 10 solves
CTF Archive Maybe Someday (GoogleCTF) 0 10 solves
CTF Archive Functional (ICC Athens) 0 11 solves
CTF Archive unrandom DSA (HackTM CTF) 0 11 solves
CTF Archive GLP420 (HackTM CTF) 0 11 solves
CTF Archive Substitution Cipher III (DownUnderCTF) 0 12 solves
CTF Archive Share (HITCON CTF) 0 12 solves
CTF Archive Maybe Someday (Maybe Someday CTF) 0 12 solves
CTF Archive FaILProof Revenge (SekaiCTF) 0 12 solves
CTF Archive ECLCG (HITCON CTF) 0 13 solves
CTF Archive Authenticator (Firebird Internal CTF) 0 13 solves
CTF Archive SpongeBob SquarePants / Battle for Bikini Bottom - Rehydrated (HTB Cyber Apocalypse) 0 13 solves
CTF Archive Probability (SEETF) 0 14 solves

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