Logs In! Part 1 was a challenge that made up the 2020 SharkyCTF CTF. We're given a link that sends us to a website build in PHP with the Symfony framework. How do I know this? They left the devtools on (notice the toolbar at the bottom).
If we hover over the
@ app_main_index button, we get a small menu with a link to the main controller script that powers the page. Clicking on the link shows us the page source, where we can see a set of routes defined, two of which lead to the admin panel.
Going to the debug section of the admin panel yields the flag.