7MS #506: Tales of Pentest Pwnage - Part 32
7 Minute Security3 Helmi 2022

7MS #506: Tales of Pentest Pwnage - Part 32

Today's my favorite tale of pentest pwnage (again)! This time we're talking about sAMAccountName spoofing specifically. We also talk about my always-under-construction list of things I try early in a pentest for maximum pwnage:
  • Run PingCastle
  • Do the SharpHound/BloodHound dumps
  • Run the DHCP poisoning module of Responder
  • Check the ms-DS-MachineAccountQuota value in the domain - if its at the default (10), then any user can add machines to the domain.
Why is the ability to add machines to the domain important? Because in the case of the sAMAccountName spoofing, if you have a non-domain-joined machine like I do, you need the ability to add a computer object to the domain. Check the Pentestlab.blog article for more info, but essentially, if you have an unpatched domain controller and the ability to add computer objects to the domain, you can pull off the attack. The article goes into crazy good technical detail, and here's my not-so-technical explanation:

If I was on a pentest, and the DC was called 7MS-DC01, and I could join a machine to the domain (which as a reminder - ANY user can do if the machine quota value is at the default value of 10), I could rename that machine account to be 7MS-DC01 without the dollar sign, request a TGT for the domain controller's account, then restore the machine name back to what it was before. Now, because the TGT is stored in memory, we can use the S4U2self Kerberos extension to request a service ticket using a domain admin account. And because the original ticket belong to the 7MS-DC01 machine name which now doesn't exist, Kerberos will look for 7MS-DC01$ and will issue the ticket for the requested service.

I might've butchered that explanation mom, but I tried my best!

TLDL/TLDR: find and exploit these unpatched domain controllers with noPac. Enjoy!

Jaksot(684)

7MS #548: Tales of Pentest Pwnage - Part 44

7MS #548: Tales of Pentest Pwnage - Part 44

SafePass.me is the only enterprise solution to protect organizations against credential stuffing and password spraying attacks. Visit safepass.me for more details, and tell them 7 Minute Security sent you to get a 10% discount! Happy belated Thanksgiving! This is not a brag or a flex, but this episode covers a coveted achievement I haven't achieved in my whole life...until now: TDAD: Triple Domain Admin Dance!!!!1111!!!1!1!!!! We talk about the fun attack path that led to the TDAD (hint: always check Active Directory user description fields!), as well as a couple quick, non-spoilery reviews of a few movies: V for Vendetta and The Black Phone.

25 Marras 202250min

7MS #547: Tales of Pentest Pwnage - Part 43

7MS #547: Tales of Pentest Pwnage - Part 43

This podcast is sponsored by Arctic Wolf, whose Concierge Security teams Monitor, Detect and Respond to Cyber threats 24/7 for thousands of customers around the world. Arctic Wolf. Redefining cybersecurity. Visit Arcticwolf.com/7MS to learn more. Today we're talking about tales of pentest pwnage - specifically how much fun printers can be to get Active Directory creds. TLDL: get into a printer interface, adjust the LDAP lookup IP to be your Kali box, run nc -lvp 389 on your Kali box, and then "test" the credentials via the printer interface in order to (potentially) capture an Active Directory cred! Today we also define an achievement that's fun to unlock called DDAD: Double Domain Admin Dance.

18 Marras 202242min

7MS #546: Securing Your Mental Health - Part 3

7MS #546: Securing Your Mental Health - Part 3

This podcast is sponsored by Arctic Wolf, whose Concierge Security teams Monitor, Detect and Respond to Cyber threats 24/7 for thousands of customers around the world. Arctic Wolf. Redefining cybersecurity. Visit Arcticwolf.com/7MS to learn more. Today we're talking about securing your mental health! I share some behind-the-scenes info about my own mental health challenges, and share a great tip a counselor gave me for getting into a good headspace before heading into a difficult conversation/situation.

11 Marras 202239min

7MS #545: First Impressions of Snipe-IT

7MS #545: First Impressions of Snipe-IT

Today’s episode of the 7 Minute Security podcast is brought to you by Blumira, which provides easy-to-use automated detection and response that can be set up in…well..about 7 minutes. Detect and resolve security threats faster, and prevent breaches. Try it free today at blumira.com/7ms. Hey friends, today we're giving you a first impressions look at a free easy asset management tool called Snipe-IT you can use to build your inventory with! Why is this important? Because it's the first critical security control! It might help to see this tool in action, so we invite you to check out our recent Twitch stream where we got it up and running in about 45 minutes.

4 Marras 202240min

7MS #544: Interview with Nato Riley of Blumira

7MS #544: Interview with Nato Riley of Blumira

Today’s episode is brought to us by Blumira, which provides easy to use, automated detection and response that can be setup in…well…about 7 minutes! Detect and resolve security threats faster and prevent breaches. Try it free today at blumira.com/7ms! Today we have a really fun interview with Nato Riley of Blumira. He cut his IT/security teeth working for a cell phone company, exorcising malware demons out of workstations, and even building an email-based SIEM. He has had a very cool career path that involves embracing newbness, pushing aside imposter syndrome, and even begging for jobs! I think this interview can best be summed up by a direct quote from Nato: "Things absolutely go wrong, and I think that's what deters people from trying. But just because something goes wrong, doesn't mean you're necessarily going to die from it. So why not try?"

28 Loka 202258min

7MS #543: How to Succeed in Business Without Really Crying - Part 12

7MS #543: How to Succeed in Business Without Really Crying - Part 12

This podcast is sponsored by Arctic Wolf, whose Concierge Security teams Monitor, Detect and Respond to Cyber threats 24/7 for thousands of customers around the world. Arctic Wolf. Redefining cybersecurity. Visit Arcticwolf.com/7MS to learn more. Hey friends! Today we talk about a SoSaaS (Spreadsheet on Steroids as a Service...not a real thing) that is helping 7MinSec be more organized - both from a project standpoint and from an "alert us when important things are due!" standpoint.

21 Loka 20221h

7MS #542: Eating the Security Dog Food - Part 5

7MS #542: Eating the Security Dog Food - Part 5

This podcast is sponsored by Arctic Wolf, whose Concierge Security teams Monitor, Detect and Respond to Cyber threats 24/7 for thousands of customers around the world. Arctic Wolf. Redefining cybersecurity. Visit Arcticwolf.com/7MS to learn more. In today's episode we talk more about eating the security dog food (following the best practices we preach!). Specifically, we focus on keeping that bloated email inbox a little more lean and mean. There are lots of tools/services to help with this, but we had a blast playing with MailStore (not a sponsor but we'd like them to be:-).

14 Loka 202228min

7MS #541: Tales of Blue Team Bliss - Part 2

7MS #541: Tales of Blue Team Bliss - Part 2

SafePass.me is the only enterprise solution to protect organizations against credential stuffing and password spraying attacks. Visit SafePass.me for more details, and tell them 7 Minute Security sent you to get a 10% discount! Today we talk about configuring your Active Directory with MFA protection thanks to AuthLite. In the tangent department, we give you a short, non-spoilery review of the film Smile.

7 Loka 202235min

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