| Date | User | Challenge | Score |
| DinoGun | Hex | 5 | |
| kinggauss | You either know, XOR you don't | 30 | |
| DinoGun | ASCII | 5 | |
| kinggauss | Favourite byte | 20 | |
| kinggauss | XOR Properties | 15 | |
| Mikbrosim | Checkpoint | 150 | |
| momingle | Extended GCD | 20 | |
| kinggauss | XOR Starter | 10 | |
| fucla | Resisting Bruteforce | 10 | |
| fucla | Keyed Permutations | 5 | |
| Dfirtester | Finding Flags | 2 | |
| nisrbo | Favourite byte | 20 | |
| abdullah_51 | Round Keys | 20 | |
| daVinciLeo | Base64 | 10 | |
| un5h4d0w | Modular Inverting | 25 | |
| momingle | Greatest Common Divisor | 15 | |
| zinccannon | ECB CBC WTF | 55 | |
| nisrbo | XOR Properties | 15 | |
| abdullah_51 | Structure of AES | 15 | |
| nisrbo | XOR Starter | 10 | |
| nathaniel2407 | Base64 | 10 | |
| daVinciLeo | Hex | 5 | |
| Bachatero | Modulus Inutilis | 50 | |
| fucla | Modular Binomials | 80 | |
| daVinciLeo | ASCII | 5 | |
| nathaniel2407 | Hex | 5 | |
| nisrbo | Bytes and Big Integers | 10 | |
| Bachatero | Salty | 20 | |
| Bachatero | Manyprime | 40 | |
| un5h4d0w | Modular Arithmetic 2 | 20 | |
| nathaniel2407 | ASCII | 5 | |
| daVinciLeo | Great Snakes | 3 | |
| Jessiinfinteloop | Factoring | 15 | |
| un5h4d0w | Modular Arithmetic 1 | 20 | |
| Jessiinfinteloop | RSA Signatures | 25 | |
| DavidKrell | Keyed Permutations | 5 | |
| Jessiinfinteloop | RSA Decryption | 20 | |
| Jessiinfinteloop | Private Keys | 20 | |
| tiduseleven | Montgomery's Ladder | 40 | |
| Pwnion | JWT Secrets | 25 | |
| zhubat | Quadratic Residues | 25 | |
| Pwnion | No Way JOSE | 20 | |
| Jessiinfinteloop | Euler's Totient | 20 | |
| StephanieNali | Export-grade | 100 | |
| Pwnion | JWT Sessions | 10 | |
| StephanieNali | Parameter Injection | 60 | |
| CandyCane13 | Great Snakes | 3 | |
| eukidmeta | Modular Inverting | 25 | |
| CandyCane13 | Finding Flags | 2 | |
| Pwnion | Token Appreciation | 5 |
You are now level Current level