| Date | User | Challenge | Score |
| Peter_Atonga | Greatest Common Divisor | 15 | |
| j03_O6 | Base64 | 10 | |
| yoake0037 | XOR Properties | 15 | |
| nous | pekobot (AIS3 Pre-Exam) | 0 | |
| Hawret | ASCII | 5 | |
| lyrad | Base64 | 10 | |
| huayijing | Finding Flags | 2 | |
| 29bda84d | Legendre Symbol | 35 | |
| yoake0037 | XOR Starter | 10 | |
| haiderontheradar | Modular Square Root | 35 | |
| Whanos | Modular Inverting | 25 | |
| Wienerboy | Diffusion through Permutation | 30 | |
| yoake0037 | Bytes and Big Integers | 10 | |
| j03_O6 | Hex | 5 | |
| yoake0037 | Base64 | 10 | |
| HandballHannes | Endless Emails | 150 | |
| yoake0037 | Hex | 5 | |
| yoake0037 | ASCII | 5 | |
| j03_O6 | ASCII | 5 | |
| yoake0037 | Great Snakes | 3 | |
| yoake0037 | Finding Flags | 2 | |
| wsmbj | Finding Flags | 2 | |
| assil | Finding Flags | 2 | |
| nhatluong07 | XOR Properties | 15 | |
| Hawret | Great Snakes | 3 | |
| Rujul | XOR Properties | 15 | |
| saik0007 | XOR Starter | 10 | |
| 0xB4DFL4G | Modular Square Root | 35 | |
| Adarsh | Lo-Hi Card Game | 120 | |
| nullbyte0x00 | Legendre Symbol | 35 | |
| lyrad | Hex | 5 | |
| canaryda | Lazy CBC | 60 | |
| Jaewon852 | Resisting Bruteforce | 10 | |
| 1502dthw | RSA Signatures | 25 | |
| jdkko | Favourite byte | 20 | |
| lyrad | ASCII | 5 | |
| lyrad | Great Snakes | 3 | |
| jdkko | XOR Properties | 15 | |
| Bonolori404 | Diffusion through Permutation | 30 | |
| lyrad | Finding Flags | 2 | |
| saik0007 | Bytes and Big Integers | 10 | |
| Ku14 | Sign in Please (HKCERT CTF) | 0 | |
| 1502dthw | RSA Decryption | 20 | |
| Jaewon852 | Keyed Permutations | 5 | |
| Felinehumanoid | Passwords as Keys | 50 | |
| Zephorzzz | Bytes and Big Integers | 10 | |
| abolfazl_dehghan | Quadratic Residues | 25 | |
| Jaewon852 | Modular Binomials | 80 | |
| cxzc233 | Great Snakes | 3 | |
| Bonolori404 | Confusion through Substitution | 25 |
You are now level Current level