harmj0y Posts

This is a short follow-up to my “A Guide to Attacking Domain Trusts” post, and the fourth post in my “PowerView PowerUsage” series. It follows the same Scenario/Solution/Explanation pattern as the previous entries, with the original post containing a constantly updated list of the entire series. One of the methods for trust hopping that I briefly covered in the trust post (under the “Case 3: Foreign ACL Principals” section) was the enumeration of DACL/ACE entries on domain objects where the principal (i.e. the user/group that holds the right over the specified object) is in a different domain than the target…

This is the third post in my “PowerView PowerUsage” series, and follows the same Scenario/Solution/Explanation pattern as the previous entries. The original post contains a constantly updated list of the entire series. Active Directory access control is something my workmates and I have been very interested in over the past year. So far, this has resulted in the release of BloodHound’s ACL Attack Path Update, as well as work on Active Directory DACL backdooring by @_wald0 and myself (whitepaper here). This post will cover DACL enumeration for GPOs in a foreign domain. Why care about this? Well, if you are…

This is the second post in my “PowerView PowerUsage” series. The original post contains a constantly updated list of the entire series. This post will follow the same scenario/solution/explanation format, and is definitely a bit simpler than the first post. The Scenario While on an engagement in a multi-domain forest, you end up with a number of computer “short names” (like WINDOWS1) in a file computers.txt that you want to resolve to complete DNS host names. The Solution The Explanation This one’s fairly straight-forward. We use gc (Get-Content) to output the list of computer shortnames, piping it to Sort-Object -Unique…

PowerView is probably my favorite bit of code I’ve written, and definitely the one I most regularly use (as evidenced by my recent posts). My team also heavily utilizes the toolkit, and we’ve come up with some cool uses for it over the past several years. For a long time I’ve wanted to share some of the real “power” uses of PowerView, like the PowerView “tricks” highlighted here. My intention for this series is to demonstrate how you can use PowerView to solve interesting problems and the thought process we put behind each solution. These posts should be short-and-sweet, less…