Hey, I recognize Offensi from the Liveoverflow video! [1]
I've been reading some Google VRP writeups [2] in order to inspire me in my bug bounty journey. There are a few by Ezequiel Pereira and Offensi. There's some really cool stuff, that go beyond XSS.
[1] https://www.youtube.com/watch?v=E-P9USG6kLs [2] https://github.com/xdavidhu/awesome-google-vrp-writeups