Use GIT as a recon tool. Find the target's GIT repositories, clone them, and then check the logs for information on the team not necessarily in the source code. Say the target is Reddit and I want to see which developers work on certain projects.
Tip #2
Look for GitLab instances on targets or belonging to the target. When you stumble across the GitLab login panel, navigate to /explore. Misconfigured instances do not require authentication to view the internal projects.
This is s great collection of different types of reverse shells and webshells. Many of the ones listed below comes from this cheat-sheet: #bugbountytips