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(695)

7MS #110: Hacking WPA Enterprise-Part 1

7MS #110: Hacking WPA Enterprise-Part 1

This episode is about my experience hacking WPA enterprise. Huge mega tiger uppercut thanks to this site for giving me the fixes I needed to get this working on Kali2! https://warroom.securestate.com/index.php/evil-twin-attack-using-hostapd-wpe/

17 Marras 20158min

7MS #109: OFFTOPIC-It Follows and Backcountry

7MS #109: OFFTOPIC-It Follows and Backcountry

Movie reviews of It Follows and Backcountry.

13 Marras 20157min

7MS #108: I'm Going to PWAPT!-Part 2

7MS #108: I'm Going to PWAPT!-Part 2

Here's part 2 (of probably several to come) about my experience with PWAPT (Practical Webapp Pentesting) training last week!

11 Marras 201510min

7MS #107: I'm Going to PWAPT!

7MS #107: I'm Going to PWAPT!

Hey I'm going to PWAPT this week (http://www.eventbrite.com/e/practical-web-application-penetration-testing-with-tim-tomes-lanmaster53-tickets-16718889649), so in this episode I talk about that...and how I'll probably be too info-overloaded to record anything on Thursday :-). Oh, and I had a fun Web app pentest this week that I wanted to share some fun bits on.

3 Marras 20157min

7MS #106: A Day in the Life of an Information Security Analyst

7MS #106: A Day in the Life of an Information Security Analyst

A listener wrote in asking some questions about "a day in the life of" a security analyst, so here's my best stab at it!

30 Loka 201510min

7MS #105: OFFTOPIC-Big Bag of Random Sauce

7MS #105: OFFTOPIC-Big Bag of Random Sauce

Today's totally random episode covers: 1. How bad does this podcast's logo suck? 2. Does this podcast need a theme song? 3. Some interesting training I'm taking next week. 4. The Walking Dead - who should die? 5. Metal Gear Solid and my personal godmode strategy.

28 Loka 20159min

7MS #104: LANTurtle First Impressions

7MS #104: LANTurtle First Impressions

Hey I just got a LANTurtle and....these are my first impressions!

22 Loka 20157min

7MS #103: OFFTOPIC-I Was in a Movie Once

7MS #103: OFFTOPIC-I Was in a Movie Once

This is an off-topic episode about the time I was in the holiday comedy super-smash laugh-fest, Jingle All the Way.

20 Loka 20157min

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