7MS #441: SharpGPOAbuse

7MS #441: SharpGPOAbuse

Hello friends! Sorry to be late with this episode (again) but we've been heads-down in a lot of cool security work, coming up for air when we can! Today's episode features:

  • A little welcome music that is not the usual scatting of gibberish I torture you with

  • Some cool tools I'm playing with in the lab that we'll do future episodes on in the future:

    • DetectionLab to practice detecting all the bad things!
    • BadBlood to dirty up your AD (your test AD with groups, computers, permissions, etc.). I wish the user import script would let you choose a list of bad passwords to assign the users, but you can also run it manually if you want.
    • Cobalt Strike - we're doing a demo right now!

Most of today's episode focuses on SharpGPOAbuse, a tool that can be used to abuse "generic write" access to GPOs (which you might identify after running BloodHound). Here's a sample syntax you could run:

SharpGPOAbuse.exe --AddUserTask --TaskName "Totes Safe Windoze Updatez" --Author SAMPLECO\ADMINISTRATOR --Command "cmd.exe" --Arguments "/c net group \"Domain Admins\" SomeLowPrivUser /ADD DOMAIN" --GPOName "Name of GPO with Generic Write Access"

This will push a ScheduledTasks.xml file to \\sample.company\Policies\LONG-STRING-REPRESENTING-THE-GPO-ID\User\Preferences\ScheduledTasks

Now if you find that the task is not pushing correctly, it may be that SharpGPOAbuse.exe hasn't been able to update either the GPT.INI file (in the root of the GPO path) and/or the versionNumber value assigned to the GPO itself.
If you need to adjust the versionNumber and GPT.INI value manually, definitely read this Microsoft article so you know how the number is generated and how to increment it properly. This flippin' sweet RastaMouse blog article also helped this click for me.

If you can't seem to update versionNumber using the PowerShell in Rasta's article, you can also open up ADSI Edit and navigate to Default naming context > DC=your,DC=com > CN=System > CN=Policies > CN=LONG-STRING-REPRESENTING-THE-GPO-ID then get the properties of the folder, scroll down and manually adjust the value for versionNumber.

Avsnitt(683)

7MS #660: Baby's First Hetzner and Ludus

7MS #660: Baby's First Hetzner and Ludus

I had an absolute ball this week spinning up my first Hetzner server, though it was not without some drama (firewall config frustrations and failing hard drives).  Once I got past that, though, I got my first taste of the amazing world of Ludus.cloud, where I spun up a vulnerable Microsoft SCCM lab and have started to pwn it.  Can’t say enough good things about Ludus.cloud, but I certainly tried in this episode!

1 Feb 34min

7MS #659: Eating the Security Dog Food - Part 8

7MS #659: Eating the Security Dog Food - Part 8

Today I’m excited about some tools/automation I’ve been working on to help shore up the 7MinSec security program, including: Using Retype as a document repository Leveraging the Nessus API to automate the downloading/correlating of scan data Monitoring markdown files for “last update” changes using a basic Python script

24 Jan 28min

7MS #658: WPA3 Downgrade Attacks

7MS #658: WPA3 Downgrade Attacks

Hey friends, today we cover: The shiny new 7MinSec Club BPATTY updates A talk-through of the WPA3 downgrade attack, complemented by the YouTube livestream

17 Jan 32min

7MS #657: Writing Rad Security Documentation with Retype

7MS #657: Writing Rad Security Documentation with Retype

Hello friends!  Today we’re talking about a neat and quick-to-setup documentation service called Retype.  In a nutshell, you can get Retype installed on GitHub pages in about 5 minutes and be writing beautiful markdown pages (with built-in search) immediately.  I still absolutely love Docusaurus, but I think Retype definitely gives it a run for its money.

10 Jan 20min

7MS #656: How to Succeed in Business Without Really Crying - Part 21

7MS #656: How to Succeed in Business Without Really Crying - Part 21

Happy new year friends! Today we talk about business/personal resolutions, including: New year’s resolution on the 7MinSec biz side to have a better work/life balance New training offering in the works Considering Substack as a communications platform A mental health booster that I came across mostly by accident

3 Jan 45min

7MS #655: Happy Hacking Holidays

7MS #655: Happy Hacking Holidays

Today we’re doing a milkshake of several topics: wireless pentest pwnage, automating the boring pentest stuff with cursor.ai, and some closing business thoughts at 7MinSec celebrates its 7th year as a security consultancy.  Links discussed today: AWUS036ACH wifi card (not my favorite anymore) Panda PAU09 N600 (love this one!) The very important Github issue that helped me better understand BPFs and WPA3 attacks TrustedSec article on WPA3 downgrade attacks

30 Dec 202458min

7MS #654: Tales of Pentest Pwnage – Part 67

7MS #654: Tales of Pentest Pwnage – Part 67

Today we’ve got some super cool stuff to cover today!  First up, BPATTY v1.4 is out and has a slug of cool things: A whole new section on old-school wifi tools like airmon-ng, aireplay-ng and airodump-ng Syntax on using two different tools to parse creds from Dehashed An updated tutorial on using Gophish for phishing campaigns The cocoa-flavored cherry on top is a tale of pentest pwnage that includes: Abusing SCCM Finding gold in SQL configuration/security audits

13 Dec 202441min

7MS #653: How to Succeed in Business Without Really Crying – Part 20

7MS #653: How to Succeed in Business Without Really Crying – Part 20

Hey friends, today we’re talking about tips to effectively present your technical assessment to a variety of audiences – from lovely IT and security nerds to C-levels, the board and beyond!

6 Dec 202449min

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