Play CTF

12 terminal challenges. Find the flags and finish them. Each one opens a sandbox with its own filesystem.

Want the real thing?

These challenges run in your browser. There is also a Termux CTF that runs on your own phone, against real files with real permissions, where every flag is generated on your device.

Play the Termux CTF

Learmux CTF

Work through them in order, or jump straight to the hard ones.

0 / 12 captured 240 points 10 topics

Encoding · 1Filesystem · 3Forensics · 1Hashing · 1Mixed · 1Networking · 1Permissions · 1Pipes · 1Processes · 1Text · 1

Easy

5 challenges · 65 points

Hello, Termux Filesystem · Easy · 10 points Captured 01 Hidden in Plain Sight Filesystem · Easy · 10 points Captured 02 Logs Never Lie Text · Easy · 15 points Captured 03 Decode Me Encoding · Easy · 15 points Captured 04 Follow the Trail Filesystem · Easy · 15 points Captured 05

Medium

6 challenges · 135 points

World-Writable Permissions · Medium · 20 points Captured 06 Process Hunt Processes · Medium · 20 points Captured 07 Network Recon Networking · Medium · 20 points Captured 08 Integrity Matters Hashing · Medium · 25 points Captured 09 Pipe Dreams Pipes · Medium · 25 points Captured 10 Buried Strings Forensics · Medium · 25 points Captured 11

Hard

1 challenges · 40 points

The Final Boss Mixed · Hard · 40 points Captured 12

New to the shell? The lessons explain every command the challenges use.

Read the lessons