| Date | User | Challenge | Score |
| h3rm3z | Base64 | 10 | |
| tuung3r | Bytes and Big Integers | 10 | |
| lftroq | Ellipse Curve Cryptography | 125 | |
| Diablo_69 | Confusion through Substitution | 25 | |
| 0xl3x | Working with Fields | 10 | |
| w4llnut | Quadratic Residues | 25 | |
| kakobtg | Favourite byte | 20 | |
| kanellam | Bringing It All Together | 50 | |
| AbdullahKhan | Encoding Challenge | 40 | |
| NguyenDuc | Beatboxer | 150 | |
| Thu_Huong11 | Computing Public Values | 25 | |
| kakobtg | XOR Properties | 15 | |
| saba | Modular Inverting | 25 | |
| lftroq | Roll your Own | 125 | |
| saba | Modular Arithmetic 2 | 20 | |
| Thu_Huong11 | Generators of Groups | 20 | |
| qxrein | Base64 | 10 | |
| saba | Modular Arithmetic 1 | 20 | |
| qxrein | Hex | 5 | |
| Thu_Huong11 | Working with Fields | 10 | |
| Kie | Round Keys | 20 | |
| qxrein | ASCII | 5 | |
| Balu2907 | Bean Counter | 60 | |
| kakobtg | XOR Starter | 10 | |
| qxrein | Great Snakes | 3 | |
| qxrein | Finding Flags | 2 | |
| kakobtg | Bytes and Big Integers | 10 | |
| Thu_Huong11 | Adrien's Signs | 80 | |
| acdwas | Authentification 1 (Breizh CTF) | 0 | |
| NitroN | Parameter Injection | 60 | |
| danaaaa24 | Base64 | 10 | |
| NitroN | Deriving Symmetric Keys | 40 | |
| PR3D470R_007 | You either know, XOR you don't | 30 | |
| SneakySedano | Stream of Consciousness | 80 | |
| kakobtg | Base64 | 10 | |
| Diablo_69 | Network Attacks | 5 | |
| danaaaa24 | Hex | 5 | |
| Thu_Huong11 | Successive Powers | 60 | |
| tuung3r | Base64 | 10 | |
| bl4nkyy | Hex | 5 | |
| wiiizz | Quadratic Residues | 25 | |
| kakobtg | Hex | 5 | |
| kakobtg | ASCII | 5 | |
| 0xl3x | Salty | 20 | |
| tuung3r | Hex | 5 | |
| kausshik | Great Snakes | 3 | |
| yhx | RSA Decryption | 20 | |
| Thu_Huong11 | Chinese Remainder Theorem | 40 | |
| danaaaa24 | ASCII | 5 | |
| NitroN | Computing Shared Secrets | 30 |
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