Practice challenges

Use the links below to explore our archive of practice challenges. These challenges are free to use and are intended to give competitors a taste of the style and complexity of our CTF.

Contact us for access to our beginner guide of challenge walkthroughs.

PECAN+ Challenge Coin

2022 Challenge Coin
Intermediate

PECAN+ 2023 may be over, but this is still a fun challenge!

Try it out!

Cryptography

Love letter
Easy

A student has encrypted a secret message to send to their girlfriend...

Try it out!
Encoded
Easy

Decoding an ELF binary (encoding not crypto)...

Try it out!
Rock 'N' Roll
Advanced

Rock band 'Primus' released an old notebook to the public...

Try it out!

Forensics

3D flag
Easy

This flag is in 3 dimensions...

Try it out!
ABC company
Intermediate

You've captured some network traffic...

Try it out!

OSINT

Kidnapped part 1
Easy

A 6-year-old child has been reported missing...

Try it out!
Kidnapped part 2
Easy

Can you find the kidnapper's flight...

Try it out!
Kidnapped part 3
Easy

Where did they end up...

Try it out!

Reverse Engineering

All your base
Intermediate

Can you find the access code?

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Steganography

Head in the clouds
Easy

Day dreaming and looking at the clouds...

Try it out!
Matchy matchy
Easy

Apparently there's a hidden message inside...

Try it out!
Take note
Intermediate

time for a little night music...

Try it out!
The nerd
Intermediate

Exif? Never heard of her...

Try it out!
Aloha
Intermediate

An empty PDF?

Try it out!
Steg Cat Practice
Intermediate

Another steg practice.

Try it out!

Web exploits

Bite my shiny metal...
Easy

Bender's programming is malfunctioning...

Try it out!
Lamb Source 1
Easy

Can you help Chef Ramsay...

Try it out!
Mr Robot
Easy

Can you find the directory containing the flag...

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Agent-007
Intermediate

Your mission is ready...

Try it out!