I don't see any offficial recording of it but try something like https://youtu.be/CsQ2VWEfduM Slides: https://media.defcon.org/DEF%20CON%2027/DEF%20CON%2027%20presentations/DEFCON-27-smea-Adventures-in-smart-buttplug-penetration-testing.pdf
By the way, there is an official recording, it's much higher quality. Sadly I didn't notice until I'd already seen the whole thing. https://www.youtube.com/watch?v=RnxcPeemHSc