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 8 solves
CTF Archive RSATogether (ECSC 2024 (Italy)) 0 9 solves
CTF Archive Authentification 1 (Breizh CTF) 0 11 solves
CTF Archive One Round Crypto (ECSC 2024 (Italy)) 0 3 solves
CTF Archive Greatest Common Multiple (CODEGATE CTF) 0 6 solves
CTF Archive Verilicious (Cyber Apocalypse 2025) 0 10 solves
CTF Archive OffTopic (ECSC 2024 (Italy)) 0 12 solves
CTF Archive Authentification 2 (Breizh CTF) 0 6 solves
CTF Archive U-turn (Breizh CTF) 0 11 solves
CTF Archive Quo vadis? (ECSC 2024 (Italy)) 0 4 solves
CTF Archive Smithing contest (ECSC 2024 (Italy)) 0 5 solves
CTF Archive ECLCG (HITCON CTF) 0 13 solves
CTF Archive Sus (ImaginaryCTF) 0 20 solves
CTF Archive Share (HITCON CTF) 0 13 solves
CTF Archive Leet Universe (ImaginaryCTF (Daily)) 0 26 solves
CTF Archive Hyper512 (HITCON CTF) 0 10 solves
CTF Archive Maybe Someday (GoogleCTF) 0 10 solves
CTF Archive Hamiltonicity 2 (CryptoHack) 0 103 solves
CTF Archive Fischlin's Transformation (CryptoHack) 0 109 solves
CTF Archive OR Proof (CryptoHack) 0 238 solves
CTF Archive Ticket Maestro (CryptoHack) 0 78 solves
CTF Archive Additional problems (CSC Belgium) 0 22 solves
CTF Archive Hamiltonicity (CryptoHack) 0 179 solves
Symmetric Ciphers Pad Thai 80 597 solves
Symmetric Ciphers The Good, The Pad, The Ugly 100 450 solves
Symmetric Ciphers Oracular Spectacular 150 217 solves
Hash Functions Merkle Trees 25 449 solves
Elliptic Curves Checkpoint 150 162 solves
Elliptic Curves An Evil Twisted Mind 175 139 solves
Elliptic Curves A Twisted Mind 80 212 solves
Elliptic Curves An Exceptional Twisted Mind 125 147 solves
Isogenies Introduction to Isogenies 10 573 solves
Isogenies Montgomery Curves 30 336 solves
Isogenies Where's the Supersingular Curve 25 383 solves
Isogenies Image Point Arithmetic 30 375 solves
Isogenies DLOG on the Surface 40 267 solves
Isogenies The j-invariant 20 483 solves
Isogenies Better than Linear 85 182 solves
Isogenies Meet me in the Claw 120 140 solves
Isogenies André Encoding 80 174 solves
Isogenies Dual Masters 90 149 solves
Isogenies What's My Kernel 70 195 solves
Isogenies Abelian SIDH 90 163 solves
Isogenies A True Genus 175 128 solves
Isogenies Secret Exponents 60 209 solves
Isogenies Special Isogenies 30 218 solves
Isogenies Twisted CSIDH Isogenies 70 205 solves
Isogenies Prime Power Isogenies 50 215 solves
Isogenies CSIDH Key Exchange 90 194 solves
Isogenies Composite Isogenies 60 258 solves
 


Least Solved
CategoryChallengePointsSolves
CTF Archive One Round Crypto (ECSC 2024 (Italy)) 0 3 solves
CTF Archive Quo vadis? (ECSC 2024 (Italy)) 0 4 solves
CTF Archive Smithing contest (ECSC 2024 (Italy)) 0 5 solves
CTF Archive Authentification 2 (Breizh CTF) 0 6 solves
CTF Archive Greatest Common Multiple (CODEGATE CTF) 0 6 solves
CTF Archive diffecient (SekaiCTF) 0 8 solves
CTF Archive Do you have good eyes? (Breizh CTF) 0 8 solves
CTF Archive RSATogether (ECSC 2024 (Italy)) 0 9 solves
CTF Archive Verilicious (Cyber Apocalypse 2025) 0 10 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 U-turn (Breizh CTF) 0 11 solves
CTF Archive Authentification 1 (Breizh CTF) 0 11 solves
CTF Archive Substitution Cipher III (DownUnderCTF) 0 12 solves
CTF Archive OffTopic (ECSC 2024 (Italy)) 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 Share (HITCON CTF) 0 13 solves
CTF Archive Probability (SEETF) 0 14 solves
CTF Archive SpongeBob SquarePants / Battle for Bikini Bottom - Rehydrated (HTB Cyber Apocalypse) 0 14 solves

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