Ring Zer0 CTF - Big Brother Is Watching

This challenge is part of the web section of the RingZer0 CTF and can be found here.

The challenge page shows the following:

There is a reference to Google, this can make you think of Google crawlers and lead you to check the site’s robots.txt file. In fact, a robots.txt file is used primarily to manage crawler traffic to your site, and usually to keep a file off Google (definition found here: https://developers.google.com/search/docs/advanced/robots/intro). So the robots.txt file could make sure that Google does not find this challenge’s flag.

In fact, if we go to https://ringzer0ctf.com/robots.txt, we find the following directory: /16bfff59f7e8343a2643bdc2ee76b2dc/. Now, if we follow this directory and go to https://ringzer0ctf.com/16bfff59f7e8343a2643bdc2ee76b2dc/, we get the flag!

Contact

If you have any questions or remarks don’t hesitate to reach out on discord to therokdaba#9872.

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