7MS #420: Tales of Internal Pentest Pwnage - Part 17
7 Minute Security26 Juni 2020

7MS #420: Tales of Internal Pentest Pwnage - Part 17

Today's episode is a fun tale of pentest pwnage! Interestingly, to me this pentest had a ton of time-sponging issues on the front end, but the TTDA (Time to Domain Admin) was maybe my fastest ever.

I had to actually roll a fresh Kali VM to upload to the customer site, and I learned (the hard way) to make that VM disk as lean as possible. I got away with a 15 gig drive, and the OS+tools+updates took up about 12 gig.

One of the biggest lessons I learned from this experience is to make sure that not only is your Kali box updated before you take it to a customer site (see this script), but you should make sure you install all the tool dependencies beforehand as well (specifically, Eyewitness, Impacket and MITM6).

This pentest was also extremely time-boxed, so I tried to get as much bang out of it as possible. This included:

  • Capturing hashes with Responder
  • Checking for "Kerberoastable" accounts (GetUserSPNs.py -request -dc-ip x.x.x.x domain/user)
  • Check for MS14-025 (see this article)
  • Check for MS17-010 (nmap -Pn -p445 --open --max-hostgroup 3 --script smb-vuln-ms17-010 192.168.0.0/24 -oA vulnerable-2-eblue) and try this method of exploiting it
  • Check for DNS zone transfer (dnsrecon -d name.of.fqdn -t axf)
  • Test for egress filtering of ports 1-1024
  • Took a backup of AD "the Microsoft way" and then cracked with secretsdump:

sudo python ./secretsdump.py -ntds /loot/Active\ Directory/ntds.dit -system /loot/registry/SYSTEM -hashes lmhash:nthash LOCAL -outputfile /loot/ad-pw-dump

Avsnitt(683)

7MS #59: Traveling with a Red Giant – Part 2 (audio)

7MS #59: Traveling with a Red Giant – Part 2 (audio)

A few episodes back I talked about Red Giant, a cool service that provides you with a pre-paid debit card that can be controlled/locked with your phone. I finally got my card working, and this episode’s about some cool things I learned about it. 7MS #59: Traveling with a Red Giant – Part 2 (audio)

7 Maj 20157min

7MS #58: What Should We Do First? (audio)

7MS #58: What Should We Do First? (audio)

At the end of just about every assessment I deliver, the client asks “What should we do first?” They (understandably) want to know a “top 5″ list of things they should change right away to improve their security posture. Today’s episode explores that a bit. 7MS #58: What Should We Do Next? (audio)

5 Maj 20158min

7MS #57: How to Review a Firewall (audio)

7MS #57: How to Review a Firewall (audio)

In this episode I talk about a few different ways to approach firewall reviews/audits. This document was very helpful in getting my template started. Also check out Nipper if you’re looking for a firewall review/audit tool. 7MS #57: How to Review a Firewall (audio)

30 Apr 20158min

7MS #56: OFFTOPIC – Catching Up and Blowing Noses (audio)

7MS #56: OFFTOPIC – Catching Up and Blowing Noses (audio)

A few offtopic things: What you can expect as far as a podcast release schedule going forward Two suspicious charges that showed up on my credit card while out of town! 7MS #56: OFFTOPIC – Catching Up and Blowing Noses (audio)

28 Apr 20158min

7MS #55: OFFTOPIC – What’s in Brian’s Murse? (video)

7MS #55: OFFTOPIC – What’s in Brian’s Murse? (video)

Ok I don’t really have a murse, but I wanted to do a short video(!) podcast to show you some sorta-security-related gadgets that I’ve been nerding out on the last few weeks. 7MS #55: OFFTOPIC – What’s in Brian’s Murse? (video)

22 Apr 20156min

7MS #54: Traveling with a Red Giant (audio)

7MS #54: Traveling with a Red Giant (audio)

If you’re concerned about your credit/debit card security, you might want to give Red Giant a try. It’s a service that provides a debit card you can unlock *only* when buying something. It’s cool. Oh, and Red Giant is NOT sponsoring this episode. If I ever get sponsors, I’ll disclose them clearly. :-) 7MS #54:…

16 Apr 20157min

7MS #53: Are You Ready to Get Robbed? (audio)

7MS #53: Are You Ready to Get Robbed? (audio)

Business DR plans are a hugely important – and often overlooked – piece of the infosec puzzle. But what about at home? If you got run over by a bus tomorrow, would you have good plans in place to help your partner/spouse take over the tech side of your household? That’s what we’re talkin’ about…

14 Apr 20157min

7MS #52: OFFTOPIC – My Son is Really Loyal (audio)

7MS #52: OFFTOPIC – My Son is Really Loyal (audio)

It’s another off-topic episode today. This one’s about how my eight-year-old son is fiercely loyal, and wants to settle a 25-year-old score for me. 7MS #52: OFFTOPIC – My Son is Really Loyal (audio)

9 Apr 20158min

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