| Date | User | Challenge | Score |
| traktor | Endless Emails | 150 | |
| thanosss | Confusion through Substitution | 25 | |
| P3ekaboo | Bytes and Big Integers | 10 | |
| Abdullah350 | Hex | 5 | |
| thanosss | Round Keys | 20 | |
| agnesilaban_ | Modular Arithmetic 1 | 20 | |
| Anis_1916 | Encoding Challenge | 40 | |
| agnesilaban_ | Greatest Common Divisor | 15 | |
| thanosss | Structure of AES | 15 | |
| thanosss | Resisting Bruteforce | 10 | |
| agnesilaban_ | Lemur XOR | 40 | |
| sixsquareAI | Authentification 2 (Breizh CTF) | 0 | |
| Anis_1916 | Bytes and Big Integers | 10 | |
| thanosss | Keyed Permutations | 5 | |
| 330fgjbk7 | Finding Flags | 2 | |
| wiz1106 | Round Keys | 20 | |
| thanosss | Greatest Common Divisor | 15 | |
| Anis_1916 | Base64 | 10 | |
| Anis_1916 | Hex | 5 | |
| Hexerei | Passwords as Keys | 50 | |
| Anis_1916 | ASCII | 5 | |
| ru57yc4n0n | You either know, XOR you don't | 30 | |
| susanto | Modular Binomials | 80 | |
| sonaj | Finding Flags | 2 | |
| susanto | Adrien's Signs | 80 | |
| kamilsan | CTRIME | 70 | |
| agnesilaban_ | XOR Starter | 10 | |
| susanto | Chinese Remainder Theorem | 40 | |
| susanto | Modular Square Root | 35 | |
| fri3m4 | Modular Arithmetic 1 | 20 | |
| ru57yc4n0n | Favourite byte | 20 | |
| susanto | Legendre Symbol | 35 | |
| susanto | Quadratic Residues | 25 | |
| TiaraCitraL | Export-grade | 100 | |
| AbysmalNightmare | Bean Counter | 60 | |
| ru57yc4n0n | XOR Properties | 15 | |
| TiaraCitraL | Parameter Injection | 60 | |
| Anis_1916 | Network Attacks | 5 | |
| fentaohe | Curveball | 100 | |
| AbysmalNightmare | Symmetry | 50 | |
| AbysmalNightmare | Flipping Cookie | 60 | |
| brew | No Leaks | 100 | |
| AbysmalNightmare | ECB CBC WTF | 55 | |
| AbysmalNightmare | ECB Oracle | 60 | |
| susanto | Dancing Queen | 120 | |
| reihakiri | ASCII | 5 | |
| determinant | Point Negation | 10 | |
| ru57yc4n0n | XOR Starter | 10 | |
| reihakiri | Great Snakes | 3 | |
| reihakiri | Finding Flags | 2 |
You are now level Current level