Just about two years ago, Tim Medin presented a new attack technique he christened “Kerberoasting“. While we didn’t realize the full implications of this at the time of release, this attack technique has been a bit of a game changer for us on engagements.

Thanks to an awesome PowerView pull request by @machosec, Kerberoasting is easier than ever using pure PowerShell. I wanted to briefly cover this technique and its background, how we’ve been using it recently, and a few awesome new developments.