DefendTheWeb Playground Challenge Intro 8

DefendTheWeb.net, previously called HackThis.co.uk, is a very famous and well-known interactive security platform where you can learn and challenge your skills.. It contains challenges from several different cybersecurity fields.

I’ve decided to have a bit of fun and try to solve every single challenge presented, from the easiest to the hardest. (although easy and hard will be different depending on your skillset and field of expertise).

As I do with any challenge website, I WILL NEVER post the flag in cleartext, as it kills the fun and thrill of finding it, however I will post my way (or ways) of getting there. This is done in respect of the website’s security and non-disclosure policy, even when it doesn’t have one ;).

Challenge Intro 8

This challenge is rated as Intro, so it might be easy to solve. Just like the previous challenge, the author presents us with a login/password form with a Login button, but no description.

After a while using our friend Google Chrome Dev Tools (F12) to check the code, especifically on the username/password form, we find this:

Notice that there is a hidden input referencing the file “../../extras/playground/48w3756.txt“. Accessing this file we find a binary code.

Just grab this binary code and decode it using any online Binary decoder, and we have our username and password.

See you on the next challenge.

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