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 Unimplemented 0 2 solves
CTF Archive Unevaluated 0 1 solves
CTF Archive Calm Down 0 0 solves
CTF Archive 2020 0 6 solves
CTF Archive Key recovery 0 1 solves
CTF Archive Unbalanced 0 1 solves
CTF Archive Probability 0 1 solves
CTF Archive ed25519 magic 0 3 solves
CTF Archive Sign in Please 0 0 solves
CTF Archive Functional 0 1 solves
CTF Archive SpongeBob SquarePants / Battle for Bikini Bottom - Rehydrated 0 3 solves
Mathematics No Way Back Home 100 153 solves
Symmetric Ciphers Beatboxer 150 70 solves
Hash Functions MDFlag 125 75 solves
Crypto on the Web TLS Handshake 15 192 solves
Crypto on the Web Saying Hello 20 189 solves
Crypto on the Web Secure Protocols 5 224 solves
Crypto on the Web Sharks on the Wire 10 205 solves
Elliptic Curves Real Curve Crypto 200 45 solves
Crypto on the Web RSA or HMAC? Part 2 100 326 solves
Mathematics Roll your Own 125 188 solves
Symmetric Ciphers Dancing Queen 120 218 solves
General SSH Keys 35 1695 solves
Misc LFSR Destroyer 250 63 solves
Hash Functions Hash Stuffing 50 332 solves
Elliptic Curves Montgomery's Ladder 40 347 solves
Elliptic Curves Double and Broken 50 183 solves
Diffie-Hellman The Matrix Revolutions 125 126 solves
Diffie-Hellman The Matrix Reloaded 100 197 solves
Diffie-Hellman The Matrix 75 268 solves
Crypto on the Web JSON in JSON 40 924 solves
Symmetric Ciphers Oh SNAP 120 216 solves
Misc L-Win 120 180 solves
Misc Bruce Schneier's Password: Part 2 250 87 solves
Misc Bruce Schneier's Password 100 240 solves
Hash Functions Mixed Up 120 216 solves
Crypto on the Web RSA or HMAC? 35 1015 solves
Crypto on the Web JWT Secrets 25 1341 solves
Crypto on the Web No Way JOSE 20 1481 solves
Hash Functions Jack's Birthday Hash 20 1019 solves
Hash Functions Jack's Birthday Confusion 30 942 solves
Crypto on the Web Token Appreciation 5 2275 solves
Crypto on the Web JWT Sessions 10 1836 solves
Mathematics Cofactor Cofantasy 150 263 solves
Symmetric Ciphers Logon Zero 80 441 solves
RSA RSA Backdoor Viability 175 504 solves
Misc Jeff's LFSR 150 149 solves
General Transparency 50 2365 solves
RSA Let's Decrypt Again 175 175 solves
Hash Functions Twin Keys 100 193 solves
 


Least Solved
CategoryChallengePointsSolves
CTF Archive Calm Down 0 0 solves
CTF Archive Sign in Please 0 0 solves
CTF Archive Probability 0 1 solves
CTF Archive Functional 0 1 solves
CTF Archive Unbalanced 0 1 solves
CTF Archive Unevaluated 0 1 solves
CTF Archive Key recovery 0 1 solves
CTF Archive Unimplemented 0 2 solves
CTF Archive SpongeBob SquarePants / Battle for Bikini Bottom - Rehydrated 0 3 solves
CTF Archive ed25519 magic 0 3 solves
CTF Archive 2020 0 6 solves
Elliptic Curves Real Curve Crypto 200 45 solves
Misc LFSR Destroyer 250 63 solves
Symmetric Ciphers Beatboxer 150 70 solves
Hash Functions MDFlag 125 75 solves
Misc Bruce Schneier's Password: Part 2 250 87 solves
Hash Functions Invariant 250 110 solves
Diffie-Hellman The Matrix Revolutions 125 126 solves
Misc Trust Games 150 146 solves
Misc Jeff's LFSR 150 149 solves
Mathematics No Way Back Home 100 153 solves
RSA Let's Decrypt Again 175 175 solves
Misc L-Win 120 180 solves
Elliptic Curves Double and Broken 50 183 solves
Mathematics Roll your Own 125 188 solves

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