Imagine doing a CTF challenge, and you're trying to find a flag; but you don't realise that you've found it already. And so you waste time figuring out other ways to try to get it - but you've already found it - that was me. Oops.

Introduction

Flag Alert is a Burp extension that checks the HTTP responses for CTF flags.
It will highlight the packets which contain flags, and also alert you when new flags are found.

Installation

  • Download Jython Standalone 2.7.2

  • Download flag_alert.py

  • In Burp Suite, go to the [Extender] > [Options] tab

  • In Burp Suite, go to the [Extender] > [Extensions] tab

    • Under Burp Extensions press [Add]
    • Change the Extension Type to Python
    • Press [Select file ...]
    • Point to the downloaded flag_alert.py