| Date | User | Challenge | Score |
| vitortrevisan | Quadratic Residues | 25 | |
| Jankoseu | Static Client | 100 | |
| vitortrevisan | Modular Inverting | 25 | |
| Jankoseu | Export-grade | 100 | |
| blue_phoenix | You either know, XOR you don't | 30 | |
| AsterExcrisys | Bringing It All Together | 50 | |
| vitortrevisan | Modular Arithmetic 2 | 20 | |
| vitortrevisan | Modular Arithmetic 1 | 20 | |
| Blaze1 | Hex | 5 | |
| xczxcb | Network Attacks | 5 | |
| vitortrevisan | Extended GCD | 20 | |
| MadRat_0 | JWT Secrets | 25 | |
| JamesOmega36 | Network Attacks | 5 | |
| blue_phoenix | Favourite byte | 20 | |
| vitortrevisan | Greatest Common Divisor | 15 | |
| patryk | Broken RSA | 100 | |
| AsterExcrisys | Diffusion through Permutation | 30 | |
| MadRat_0 | No Way JOSE | 20 | |
| gwiazdas | No Way Back Home | 100 | |
| gwiazdas | Modular Binomials | 80 | |
| milezita | Jack's Birthday Confusion | 30 | |
| Reo0x | Greatest Common Divisor | 15 | |
| blue_phoenix | XOR Properties | 15 | |
| Klubbfiskare | Favourite byte | 20 | |
| milezita | Jack's Birthday Hash | 20 | |
| sk3pt1c | Merkle Trees | 25 | |
| Klubbfiskare | XOR Properties | 15 | |
| Aceproulx | Encoding Challenge | 40 | |
| MarioDarco | Dancing Queen | 120 | |
| Menegaldo | No Difference | 175 | |
| gwiazdas | Adrien's Signs | 80 | |
| blue_phoenix | XOR Starter | 10 | |
| sk3pt1c | No Difference | 175 | |
| Menegaldo | Twin Keys | 100 | |
| Creafy | Adrien's Signs | 80 | |
| MadRat_0 | Oh SNAP | 120 | |
| Menegaldo | PriMeD5 | 100 | |
| xczxcb | XOR Starter | 10 | |
| gwiazdas | Successive Powers | 60 | |
| sk3pt1c | Let's Decrypt Again | 175 | |
| Ahmedelbehi | Passwords as Keys | 50 | |
| Iceish | Great Snakes | 3 | |
| bangaAlderson | Hex | 5 | |
| doneyit413 | Encoding Challenge | 40 | |
| JamesOmega36 | XOR Starter | 10 | |
| Jankoseu | Parameter Injection | 60 | |
| Iceish | Finding Flags | 2 | |
| gwiazdas | Chinese Remainder Theorem | 40 | |
| gwiazdas | Modular Square Root | 35 | |
| blue_phoenix | Bytes and Big Integers | 10 |
You are now level Current level