CTF Challenges
48 challenges
Packet Sniff
Our security team intercepted network traffic from a server that was recently compromised. The attacker connected...
Unusual Process
A security analyst discovered suspicious activity on a corporate workstation. A memory dump was captured during...
Shell Game
During a security incident, a memory dump was captured from a workstation suspected of running malicious scripts. Your...
Basic Encoding Soup
Every hacker needs to recognize common encoding schemes. This challenge layers three of the most common encodings...
The ROT Side
ROT13 is childs play. But what about its more obscure cousin that handles the full printable ASCII range? Ciphertext:
Escaped Reality
Web applications love to encode special characters. Sometimes the encoding gets applied in unexpected orders....
Legacy Auth
An old authentication daemon was discovered running on an internal server. The sysadmin claims it's been there "since...
Double Trouble
Sometimes attackers apply the same encoding multiple times to evade detection. Simple but effective. Ciphertext:
Compressed Thoughts
Malware authors love compression. The magic bytes 1f 8b are your friend. Ciphertext: