We covered web application authentication bypass using the reset feature in addition to Linux privilege escalation using the LD_PRELOAD method. This was part of TryHackMe Road.

By taking advantage of lack of check on the username field, we reset the password and intercept the request with Burp Suite. By changing the username to admin, we were able to reset the admin password and get access to the administration dashboard. We uploaded a web shell and got the first foothold on the machine. Privilege escalation was accomplished by creating a shared object file and make a binary use it to run as sudo. More on Linux privilege escalation notes

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What is the user.txt flag?

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