| Date | User | Challenge | Score |
| wnrfx | Favourite byte | 20 | |
| Grolando | XOR Properties | 15 | |
| magellan | Greatest Common Divisor | 15 | |
| eyzxq | Extended GCD | 20 | |
| qukert | You either know, XOR you don't | 30 | |
| sajjad_cyber | Base64 | 10 | |
| Mageto | Base64 | 10 | |
| hyouchun | Modular Inverting | 25 | |
| WangXueyi | Bringing It All Together | 50 | |
| sandramuriuki | ASCII | 5 | |
| eyzxq | Greatest Common Divisor | 15 | |
| sajjad_cyber | Hex | 5 | |
| ___K___ | Modular Arithmetic 1 | 20 | |
| frain | XOR Starter | 10 | |
| sajjad_cyber | ASCII | 5 | |
| ___K___ | Extended GCD | 20 | |
| hyouchun | Modular Arithmetic 2 | 20 | |
| Mageto | Hex | 5 | |
| Warren_2919 | Size and Basis | 15 | |
| Mageto | ASCII | 5 | |
| sandramuriuki | Great Snakes | 3 | |
| Warren_2919 | Vectors | 10 | |
| hyouchun | Modular Arithmetic 1 | 20 | |
| WangXueyi | Diffusion through Permutation | 30 | |
| Mageto | Great Snakes | 3 | |
| Mageto | Finding Flags | 2 | |
| ANDY_NOAH | Favourite byte | 20 | |
| sandramuriuki | Finding Flags | 2 | |
| doanhaphong | Lemur XOR | 40 | |
| sajjad_cyber | Great Snakes | 3 | |
| hyouchun | Extended GCD | 20 | |
| HumanHumanName | Confusion through Substitution | 25 | |
| khawla1 | No Way JOSE | 20 | |
| ___K___ | Greatest Common Divisor | 15 | |
| Warren_2919 | Successive Powers | 60 | |
| WangXueyi | Confusion through Substitution | 25 | |
| hiranoryuto | Base64 | 10 | |
| Itdoesntmetter | Resisting Bruteforce | 10 | |
| hiranoryuto | Hex | 5 | |
| Grolando | XOR Starter | 10 | |
| khawla1 | JWT Sessions | 10 | |
| hanlap123 | XOR Properties | 15 | |
| boboyaga | Bringing It All Together | 50 | |
| nQQb99 | XOR Starter | 10 | |
| hiranoryuto | ASCII | 5 | |
| hiranoryuto | Great Snakes | 3 | |
| Blunderwaffle24 | Bytes and Big Integers | 10 | |
| hiranoryuto | Finding Flags | 2 | |
| kachan | Great Snakes | 3 | |
| kachan | Finding Flags | 2 |
You are now level Current level