Dates: 27/06/2025 - 13/07/2025
This is the official repository with the challenges published in Cyprus Cyber Security Challenge (CCSC) CTF 2025. Each challenge has a public, solution and setup folder (if applicable) and is accompanied with a short description. The setup folder contains all the files required to build and host the challenge and usually contains the flag and a proof of concept solution as well. The public folder contains the files that are released to the participant during the competition.
This year, the competition is co-organised by Team Cyprus and Team Greece!
Flag format: ECSC{this_is_a_flag}
Although some of the challenges may run as is, it is recommended that you have docker and docker-compose installed and use the provided scripts to run the challenges to ensure isolation and therefore proper environment setup.
| Name | Author |
|---|---|
| Asteromata | rasti |
| Gamble Auction | Gramthanos & rasti |
| The Truth | GramThanos |
| This is different | P3taByte © Zer0Tolerance |
| This is different - Revenge | P3taByte © Zer0Tolerance |
| Name | Author |
|---|---|
| Cursed Locker | canopus |
| HexCell Hunt | dark_darkl0rd |
| Hive Heist | dark_darkl0rd |
| TVBox | GramThanos |
| Volatile Expert Pt. 1 | canopus |
| Volatile Expert Pt. 2 | canopus |
| Volatile Expert Pt. 3 | canopus |
| Volatile Expert Pt. 4 | canopus |
| Volatile Expert Pt. 5 | canopus |
| Volatile Expert Pt. 6 | canopus |
| Name | Author |
|---|---|
| Blackjack | GramThanos |
| CalculAItor | GramThanos |
| Date MCP | GramThanos |
| Disorder | rok0s |
| High-Low | GramThanos |
| Holding Secrets | k4rt0fl3r |
| Pot Pouri | wizard_alfredo |
| Welcome | CCSC Team |
| You've got a flag in me | tratrafe2 |
| Name | Author |
|---|---|
| Log Recorder | r3dsh3rl0ck |
| pwnb0t | r3dsh3rl0ck |
| shellcode | s3nn |
| Station Maintenace | r3dsh3rl0ck |
| zer0-2 | zer0heir |
| zer0cool | zer0heir |
| Name | Author |
|---|---|
| Anti-tricks | kallenosf |
| Gatekeeper | rok0s |
| Just a Key | GramThanos |
| Up for GRUBs | canopus |