7MS #532: Tales of Pentest Pwnage - Part 39

7MS #532: Tales of Pentest Pwnage - Part 39

Hey friends, wow...we're up to thirty-nine episodes of pwnage? Should we make a cake when we hit the big 4-0?! Anyway, today's TLDL is this:

If you get a nagging suspicion about something you find during enumeration, make sure to either come back to it later, or exhaust the path right away so you don't miss something! Because I did :-/

A tip that's been helping me speed along my use of CrackMapExec and other tools is by using Kerberos authentication. You can grab a ticket for your test AD account by using Impacket like so:

gettgt.py victim.domain/LowPrivUser export KRB5CCNAME=LowPrivUser.ccache

Then in most tools you can pass the cred by doing something like:

crackmapexec smb DC01 -k

In my enumeration of this network, I used Certipy to find potential attack paths against Active Directory Certificate Services. Something cool I learned is that Certipy will spit out both a text and json dump so you can import into BloodHound and then pair that data with their custom queries json file for beautiful visual potential pwnage!

I ran into an issue where my certificate shenanigans resulted in an KDC_ERR_PADATA_TYPE_NOSUPP. I originally gave up on this attack path, only to learn about this awesome PassTheCert tool from this rad blog post! After initially being hesitant to use a tool I'd never heard of, I raised a GitHub issue to calm my nerves and, shortly after, found myself doing a domain admin dance.

Oh, and although I didn't use it on this specific pentest, coercer is an awesome tool that helps you, ya know, coerce things!

Jaksot(688)

7MS #8: CISSP – Is That the Cert for Me? (audio)

7MS #8: CISSP – Is That the Cert for Me? (audio)

In this episode I talk about my experience prepping for the CISSP exam. Download: Episode 8: CISSP – Is That the Cert for Me? (audio) Show notes: I used this book as my primary study tool. It comes with a whole slew of companion materials like a pre-assessment test, flashcards and 3 full practice exams.…

22 Maalis 20147min

7MS #7: External Vulnerabilities that Byte (audio)

7MS #7: External Vulnerabilities that Byte (audio)

Episode lucky #7!!! In this episode I talk about external network vulnerabilities that we see in many of our assessments – some of which are pretty easy to clear up. Download: Episode 7: External Vulnerabilities that Byte (audio) Show notes: RC4 – a risk that we find just about anywhere SSL is used, but in…

15 Maalis 20147min

7MS #6: Fun Firewall Rules – part 2 (audio)

7MS #6: Fun Firewall Rules – part 2 (audio)

In this episode I continue talking about some basic firewall rules that many organizations don’t have in place. Download: Episode 6: Fun Firewall Rules – part 2 (audio) Show notes: Limit outbound DNS requests to just the ISP servers (or whatever external servers you use). Anytime a firewall rule is changed, perform a vulnerability scan…

8 Maalis 20147min

7MS #5: Fun Firewall Rules – part 1 (audio)

7MS #5: Fun Firewall Rules – part 1 (audio)

In this episode I talk about some basic firewall rules that many organizations don’t have in place. Download: Episode 5: Fun Firewall Rules – part 1 (audio) Show notes: Block outbound port TCP 25 for all devices except your mail server(s). If you use a third party mail filter like Postini or Securence, ensure that…

1 Maalis 20147min

7MS #4: Patch Strategies: Part Deux (audio)

7MS #4: Patch Strategies: Part Deux (audio)

In this episode I continue talking about some dos and donts of patch strategies – this time talking about enterprise level gear. Download: Episode 4: Patch Strategies: Part Deux (audio) Show notes: There are often two trains of thought in regards to enterprise gear patching (like routers, switches, firewalls). 1. If it ain’t broke, don’t…

22 Helmi 20146min

7MS #3: Patch Strategies: Part 1 (audio)

7MS #3: Patch Strategies: Part 1 (audio)

In this episode I talk about some trends (and problems) we’re seeing on the patching front – specifically OS and third-party apps. Download: Episode 3: Patch Strategies: Part 1 (audio) Show notes: Most organizations have the Microsoft side of the house patched well – but the third party apps (Java/Flash/Reader/etc.)? Not so much…but that’s just…

13 Helmi 20147min

7MS #2: The Importance of Logging and Alerting! (audio)

7MS #2: The Importance of Logging and Alerting! (audio)

In this episode I talk about how a client of ours learned a hard lesson: that the lack of logging/alerting makes for a pretty miserable investigation after they were breached. Download: Episode 2: The Importance of Logging and Alerting! (audio) Show notes: Public-facing terminal servers without 2FA basically have a sign on their back that…

1 Helmi 20147min

7MS #1: Epic Introduction! (audio)

7MS #1: Epic Introduction! (audio)

In this episode, I talk about the inspiration behind the 7MS podcast and my vision for it going forward. (Admittedly, my ulterior motive is to use this intro episode to figure out how in the heck to get this podcast submitted and visible on iTunes :-). Download Episode 1: Epic Introduction to 7MS (MP3) I’ll…

1 Helmi 20147min

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