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

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

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

Crypto challenge from CyberGame 2026.

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

Author: SK-CERT

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

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

Malware challenge from CyberGame 2026.

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

Author: SK-CERT

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

Malware challenge from CyberGame 2026.

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

Author: SK-CERT

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

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

Crypto challenge from CyberGame 2026.

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

Author: SK-CERT

Forensics challenge from CyberGame 2026.

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

Author: SK-CERT

Forensics challenge from CyberGame 2026.

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

Author: SK-CERT

Malware challenge from CyberGame 2026.

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

Author: SK-CERT