| Date | User | Challenge | Score |
| Dan1e1B | Great Snakes | 3 | |
| notausername | Symmetry | 50 | |
| sweatyrocket | XOR Properties | 15 | |
| sweatyrocket | XOR Starter | 10 | |
| eduardos | Passwords as Keys | 50 | |
| x3ric | Cipher Mode Picker (HKCERT CTF) | 0 | |
| elb15 | Modular Inverting | 25 | |
| mohamed650i | Favourite byte | 20 | |
| sweatyrocket | Encoding Challenge | 40 | |
| Dan1e1B | Finding Flags | 2 | |
| billy_leiv | Passwords as Keys | 50 | |
| jmaciej7 | Jack's Birthday Confusion | 30 | |
| notausername | Flipping Cookie | 60 | |
| Nadav160 | RSA Decryption | 20 | |
| mahu | XOR Properties | 15 | |
| x3ric | Chaos (Zh3r0 CTF V2) | 0 | |
| Kinokoda | Keyed Permutations | 5 | |
| elb15 | Modular Arithmetic 2 | 20 | |
| GeoPen05 | RSA Signatures | 25 | |
| jmaciej7 | Jack's Birthday Hash | 20 | |
| mr265 | Confusion through Substitution | 25 | |
| dror_cr | Proofs of Knowledge | 20 | |
| aris_tsal | Everything is Big | 70 | |
| Anonymous_Bleh | Hex | 5 | |
| notausername | ECB CBC WTF | 55 | |
| Nadav160 | Private Keys | 20 | |
| RatDweller | Hex | 5 | |
| chananelz | Gram Schmidt | 30 | |
| HackwithVijay | Modular Binomials | 80 | |
| idris_qlzde | Modular Arithmetic 1 | 20 | |
| Nadav160 | Euler's Totient | 20 | |
| ghoghojjjj | Adrien's Signs | 80 | |
| alexrg | Factoring | 15 | |
| x3ric | A Joke Cipher (HKCERT CTF) | 0 | |
| TsilivakosGeorge | Lemur XOR | 40 | |
| aris_tsal | Modulus Inutilis | 50 | |
| As890y | Salty | 20 | |
| Elkin | Modular Inverting | 25 | |
| mr265 | Network Attacks | 5 | |
| notausername | ECB Oracle | 60 | |
| mahu | XOR Starter | 10 | |
| alexrg | RSA Signatures | 25 | |
| HackwithVijay | Adrien's Signs | 80 | |
| yetehe0 | XOR Starter | 10 | |
| Elkin | Modular Arithmetic 2 | 20 | |
| mohamed650i | XOR Properties | 15 | |
| x3ric | 1n_jection (Zh3r0 CTF V2) | 0 | |
| elb15 | Modular Arithmetic 1 | 20 | |
| Nadav160 | Public Keys | 15 | |
| Pacos12 | RSA Decryption | 20 |
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