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 17 solves
CTF Archive RSATogether (ECSC 2024 (Italy)) 0 14 solves
CTF Archive Authentification 1 (Breizh CTF) 0 31 solves
CTF Archive One Round Crypto (ECSC 2024 (Italy)) 0 6 solves
CTF Archive Greatest Common Multiple (CODEGATE CTF) 0 11 solves
CTF Archive Verilicious (Cyber Apocalypse 2025) 0 15 solves
CTF Archive OffTopic (ECSC 2024 (Italy)) 0 17 solves
CTF Archive Authentification 2 (Breizh CTF) 0 14 solves
CTF Archive U-turn (Breizh CTF) 0 22 solves
CTF Archive Quo vadis? (ECSC 2024 (Italy)) 0 8 solves
CTF Archive Smithing contest (ECSC 2024 (Italy)) 0 9 solves
CTF Archive ECLCG (HITCON CTF) 0 16 solves
CTF Archive Sus (ImaginaryCTF) 0 25 solves
CTF Archive Share (HITCON CTF) 0 16 solves
CTF Archive Leet Universe (ImaginaryCTF (Daily)) 0 30 solves
CTF Archive Hyper512 (HITCON CTF) 0 14 solves
CTF Archive Maybe Someday (GoogleCTF) 0 12 solves
CTF Archive Hamiltonicity 2 (CryptoHack) 0 120 solves
CTF Archive Fischlin's Transformation (CryptoHack) 0 131 solves
CTF Archive OR Proof (CryptoHack) 0 296 solves
CTF Archive Ticket Maestro (CryptoHack) 0 103 solves
CTF Archive Additional problems (CSC Belgium) 0 30 solves
CTF Archive Hamiltonicity (CryptoHack) 0 219 solves
Symmetric Ciphers Pad Thai 80 791 solves
Symmetric Ciphers The Good, The Pad, The Ugly 100 575 solves
Symmetric Ciphers Oracular Spectacular 150 272 solves
Hash Functions Merkle Trees 25 622 solves
Elliptic Curves Checkpoint 150 215 solves
Elliptic Curves An Evil Twisted Mind 175 170 solves
Elliptic Curves A Twisted Mind 80 288 solves
Elliptic Curves An Exceptional Twisted Mind 125 185 solves
Isogenies Introduction to Isogenies 10 703 solves
Isogenies Montgomery Curves 30 408 solves
Isogenies Where's the Supersingular Curve 25 460 solves
Isogenies Image Point Arithmetic 30 459 solves
Isogenies DLOG on the Surface 40 323 solves
Isogenies The j-invariant 20 596 solves
Isogenies Better than Linear 85 220 solves
Isogenies Meet me in the Claw 120 173 solves
Isogenies André Encoding 80 211 solves
Isogenies Dual Masters 90 183 solves
Isogenies What's My Kernel 70 238 solves
Isogenies Abelian SIDH 90 197 solves
Isogenies A True Genus 175 162 solves
Isogenies Secret Exponents 60 256 solves
Isogenies Special Isogenies 30 274 solves
Isogenies Twisted CSIDH Isogenies 70 246 solves
Isogenies Prime Power Isogenies 50 263 solves
Isogenies CSIDH Key Exchange 90 230 solves
Isogenies Composite Isogenies 60 314 solves
 


Least Solved
CategoryChallengePointsSolves
CTF Archive One Round Crypto (ECSC 2024 (Italy)) 0 6 solves
CTF Archive Quo vadis? (ECSC 2024 (Italy)) 0 8 solves
CTF Archive Smithing contest (ECSC 2024 (Italy)) 0 9 solves
CTF Archive diffecient (SekaiCTF) 0 11 solves
CTF Archive Greatest Common Multiple (CODEGATE CTF) 0 11 solves
CTF Archive Maybe Someday (GoogleCTF) 0 12 solves
CTF Archive Functional (ICC Athens) 0 14 solves
CTF Archive Hyper512 (HITCON CTF) 0 14 solves
CTF Archive unrandom DSA (HackTM CTF) 0 14 solves
CTF Archive RSATogether (ECSC 2024 (Italy)) 0 14 solves
CTF Archive Maybe Someday (Maybe Someday CTF) 0 14 solves
CTF Archive GLP420 (HackTM CTF) 0 14 solves
CTF Archive Authentification 2 (Breizh CTF) 0 14 solves
CTF Archive Substitution Cipher III (DownUnderCTF) 0 15 solves
CTF Archive Authenticator (Firebird Internal CTF) 0 15 solves
CTF Archive Verilicious (Cyber Apocalypse 2025) 0 15 solves
CTF Archive FaILProof Revenge (SekaiCTF) 0 15 solves
CTF Archive Probability (SEETF) 0 16 solves
CTF Archive ECLCG (HITCON CTF) 0 16 solves
CTF Archive Share (HITCON CTF) 0 16 solves
CTF Archive SpongeBob SquarePants / Battle for Bikini Bottom - Rehydrated (HTB Cyber Apocalypse) 0 16 solves
CTF Archive OffTopic (ECSC 2024 (Italy)) 0 17 solves
CTF Archive Key recovery (DCTF) 0 17 solves
CTF Archive Do you have good eyes? (Breizh CTF) 0 17 solves
CTF Archive Sign In Please, Again (HKCERT CTF) 0 17 solves

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