CyberGame 2026


CTF Archive.

CyberGame 2026

CyberGame is the Slovak national cybersecurity competition organized by the National Cyber Security Centre SK-CERT, also serving as the Slovak qualifier for the European Cyber Security Challenge.


Original Date: Sat, 28 Feb. 2026, 23:00 UTC — Sat, 09 May 2026, 21:59 UTC
Original URL: https://cybergame.sk/
CTFtime Entry: CyberGame 2026
Organizing Team: SK-CERT



Challenges

Crypto Sanity Check - Layers of encoding

53 53 32 51 48 32 55 51 32 55 52 32 53 49 32 51 48 32 53 54 32 53 51 32 53 54 32 52 56 32 55 52 32 55 51 32 52 101 32 52 56 32 54 98 32 55 97 32 54 51 32 54 97 32 52 101 32 54 98 32 53 56 32 51 50 32 55 56 32 55 48 32 54 49 32 55 97 32 52 101 32 54 54 32 52 101 32 52 55 32 51 53 32 54 54 32 52 100 32 52 55 32 51 53 32 55 48 32 52 100 32 52 55 32 51 53 32 51 57

Use flagCheck to input the flag you get from the challenge to get the actual flag


Author: CyberGame 2026

Connect with SSH

Link your SSH key, then connect with: ssh [email protected]

Forensics Sanity Check - Elephant1

Here is a picture of an elephant. He is huge, so the flag is probably somewhere behind him.

Use flagCheck to input the flag you get from the challenge to get the actual flag


Author: CyberGame 2026

Connect with SSH

Link your SSH key, then connect with: ssh [email protected]

Reversing - Picking letters

Can you find correct letters of the flag?

Use flagCheck to input the flag you get from the challenge to get the actual flag


Author: CyberGame 2026

Connect with SSH

Link your SSH key, then connect with: ssh [email protected]

Crypto challenge from CyberGame 2026.

Use flagCheck to input the flag you get from the challenge to get the actual flag


Author: SK-CERT

Connect with SSH

Link your SSH key, then connect with: ssh [email protected]

Osint Sanity Check - Flag is in the description

Flag is SK-CERT{pl34s3_y0u_c4n_d0_7his}.

Use flagCheck to input the flag you get from the challenge to get the actual flag


Author: CyberGame 2026

Connect with SSH

Link your SSH key, then connect with: ssh [email protected]

Crypto Sanity Check - rotted

FX-PREG{flzz37evp_e0747v0a}

Use flagCheck to input the flag you get from the challenge to get the actual flag


Author: CyberGame 2026

Connect with SSH

Link your SSH key, then connect with: ssh [email protected]

Malware challenge from CyberGame 2026.

Use flagCheck to input the flag you get from the challenge to get the actual flag


Author: SK-CERT

Connect with SSH

Link your SSH key, then connect with: ssh [email protected]

SPAN sniff

  • Challenge ID: 24
  • Category: Forensics
  • Value: 100
  • Solves: 137
  • Solved By Me: False

Description

We received a PCAP capture from a corporate network device after a suspected incident. Help us investigate what happened.

Connection Info

None

Files

  • http_bodies.txt | source=artifacts/from_workspace_root | relative_path=artifacts/from_workspace_root/http_bodies.txt
  • http_file_data.tsv | source=artifacts/from_workspace_root | relative_path=artifacts/from_workspace_

Use flagCheck to input the flag you get from the challenge to get the actual flag


Author: SK-CERT

Connect with SSH

Link your SSH key, then connect with: ssh [email protected]

Malware challenge from CyberGame 2026.

Use flagCheck to input the flag you get from the challenge to get the actual flag


Author: SK-CERT

Connect with SSH

Link your SSH key, then connect with: ssh [email protected]

Reversing - Matrix sudoku

Can you solve this simple matrix? If your input satisfies the constraints, you will get decrypted flag.

Use flagCheck to input the flag you get from the challenge to get the actual flag


Author: CyberGame 2026

Connect with SSH

Link your SSH key, then connect with: ssh [email protected]

Forensics Sanity Check - Elephant2

This time, I tried to hide the flag much better. You should try to check the content of the image.

Use flagCheck to input the flag you get from the challenge to get the actual flag


Author: CyberGame 2026

Connect with SSH

Link your SSH key, then connect with: ssh [email protected]

Crypto challenge from CyberGame 2026.

Use flagCheck to input the flag you get from the challenge to get the actual flag


Author: SK-CERT

Connect with SSH

Link your SSH key, then connect with: ssh [email protected]

Forensics challenge from CyberGame 2026.

Use flagCheck to input the flag you get from the challenge to get the actual flag


Author: SK-CERT

Connect with SSH

Link your SSH key, then connect with: ssh [email protected]

Forensics challenge from CyberGame 2026.

Use flagCheck to input the flag you get from the challenge to get the actual flag


Author: SK-CERT

Connect with SSH

Link your SSH key, then connect with: ssh [email protected]

Malware challenge from CyberGame 2026.

Use flagCheck to input the flag you get from the challenge to get the actual flag


Author: SK-CERT

Connect with SSH

Link your SSH key, then connect with: ssh [email protected]

30-Day Scoreboard:

This scoreboard reflects solves for challenges in this module after the module launched in this dojo.

Rank Hacker Badges Score