Halborn CTF FAQ

This is a list of Frequently Asked Questions about halborn-ctf. Feel free to suggest new entries!

How do I…

Create private deployments

If you don’t want to show any of the deployment process to the player:

Set the HAS_FILES to False.

Probably you want the HAS_DETAILS set to True to display information on how to interact with your challenge.

If you don’t want to show any of the deployment process at all to the player but still want to provide files:

Set the HAS_FILES to True. And list the files that you want the player to have.

Create a separated script, for example private.py with desidered functions (You can use all halborn_ctf features there, including periodic functions).

Import the script functions on the challenge.py: from private import function1, function2.

Use the functions on your build or run functions.

Note

Keep in mind that if no files are exposed under file the challenge.py script does only give a hint on how the challenge was deployed.

Create temporary files from strings

from halborn_ctf.templates import StrFile

...

def files(self):
    return [
        StrFile('folder/test.txt', 'THIS IS THE CONTENT')
    ]

Install forge on `build`

import halborn_ctf.shell as shell

    def build(self):
        shell.run('curl -L https://foundry.paradigm.xyz | bash', env={"FOUNDRY_DIR": '/usr'})
        shell.run('foundryup', env={"FOUNDRY_DIR": '/usr'})