| Date | User | Challenge | Score |
| at220121 | Greatest Common Divisor | 15 | |
| AHMED777 | Finding Flags | 2 | |
| watcharabest | Quadratic Residues | 25 | |
| x20Four | Bytes and Big Integers | 10 | |
| SirRockhead | Greatest Common Divisor | 15 | |
| iliap | Resisting Bruteforce | 10 | |
| illuminate0221 | Great Snakes | 3 | |
| iliap | Keyed Permutations | 5 | |
| illuminate0221 | Finding Flags | 2 | |
| at220121 | You either know, XOR you don't | 30 | |
| fzh | ASCII | 5 | |
| watcharabest | Modular Inverting | 25 | |
| xuanhoangtr | ECLCG (HITCON CTF) | 0 | |
| fzh | Great Snakes | 3 | |
| fzh | Finding Flags | 2 | |
| BrianOjeda | Modular Binomials | 80 | |
| watcharabest | Modular Arithmetic 2 | 20 | |
| BrianOjeda | Adrien's Signs | 80 | |
| BrianOjeda | Chinese Remainder Theorem | 40 | |
| BrianOjeda | Modular Square Root | 35 | |
| grazkaa | The Matrix Revolutions | 125 | |
| mo_albrty | Stream of Consciousness | 80 | |
| phomai739391 | Modular Binomials | 80 | |
| mboh2 | Inferius Prime | 30 | |
| UnlamG1MA | You either know, XOR you don't | 30 | |
| mo_albrty | CTRIME | 70 | |
| thisismetrying | Adrien's Signs | 80 | |
| SirRockhead | You either know, XOR you don't | 30 | |
| phomai739391 | Adrien's Signs | 80 | |
| ArcherSterling09 | ASCII | 5 | |
| UnlamG1MA | Favourite byte | 20 | |
| CraftingNerf | Lazy CBC | 60 | |
| ArcherSterling09 | Great Snakes | 3 | |
| buithaison2507 | Base64 | 10 | |
| phomai739391 | Chinese Remainder Theorem | 40 | |
| chelinh | Successive Powers | 60 | |
| buithaison2507 | Hex | 5 | |
| SirRockhead | Favourite byte | 20 | |
| ArcherSterling09 | Finding Flags | 2 | |
| UnlamG1MA | XOR Properties | 15 | |
| landOfLoons | ASCII | 5 | |
| tseshin | Great Snakes | 3 | |
| tr1as3c | Network Attacks | 5 | |
| tseshin | Finding Flags | 2 | |
| buithaison2507 | ASCII | 5 | |
| SirRockhead | XOR Properties | 15 | |
| landOfLoons | Great Snakes | 3 | |
| landOfLoons | Finding Flags | 2 | |
| Franciscolf | XOR Starter | 10 | |
| BrianOjeda | Legendre Symbol | 35 |
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