7MS #477: Cobalt Strike for Newbs
7 Minute Security21 Juli 2021

7MS #477: Cobalt Strike for Newbs

Today we're talking about Cobalt Strike for newbs - including how to get it up and running, as well as some tools that will help you generate beacons while evading EDR at the same time!

Some helpful things mentioned in today's episode:

  • Wherever you spin up your CS instance, it's probably a good idea to lock down the firewall to only specific IPs. With Digital Ocean, I found this article helpful.

  • When generating CS listeners, the C2Concealer from FortyNorth helped me get malleable C2 profiles generated while creating a LetsEncrypt cert at the same time!

  • My CS beacons kept getting gobbled by AV, but the following resources helped me get some stealthy ones generated: Artifact Kit, PEzor and ScareCrow. Here's a specific ScareCrow example that flew under the EDR radar:

Scarecrow -I myrawshellcode.bin -etw -domain www.microsoft.com

  • PowerUpSQL is awesome for finding servers where you can run stored procedures to send your attacking box a priv'd hash to pass/capture/crack. Check out this presentation on PowerUpSQL to find vulnerable targets, then use mssql_ntlm_stealer module in Metasploit to have fun with the account hashes. Be sure to set your domain when configuring the Metasploit module!

  • When trying to pop an SMB shell with relay tools, I've had problems recently with those attempts being stopped by defensive tools. Then I found this gem which talks about tweaking smbexec.py to evade AV. It worked a treat!

  • When you use MultiRelay, I had no idea that it includes an upload function so you can simply upload your beacon.exe from a SYSTEM shell and fire it right from a command line. Cool!

  • Once my beacons started firing around the pentest environment, I temporarily allowed all IPs to talk to my Digital Ocean box - just because the IP I grabbed from a "what is my IP?" Google search didn't always match the actual beacons that called home. Once the beacon connectivity was established, I tweaked the beacon firewall rules to just let certain IPs in the door.

  • This Cobalt Strike Extension Kit was FREAKING sweet for adding "right click > do awesome stuff" functionality to CS like dump hashes, search for Kerberoastable accounts, setup persistence, etc.

  • Got a SYSTEM level shell but need to abuse a DA's privs? Tell the beacon to pull back a list of running processes, then click one (like explorer.exe) running under a DA's account and then impersonate it to add your account to the DA group!

  • Having issues dumping LSASS? This article from Red Canary gives you some great ideas to do it in a way that doesn't make AV throw a fit!

  • Trying to RDP using PtH? This article will help you out. And if you get warnings about not being able to RDP in because of some sort of login restriction, try adjusting this reg key with CME:

cme smb 10.1.2.3 -u Administrator -H THE-HASH-YOU-CAPTURED -x 'reg add HKLM\System\CurrentControlSet\Control\Lsa /t REG_DWORD /v DisableRestrictedAdmin /d 0x0 /f'

Avsnitt(705)

7MS #657: Writing Rad Security Documentation with Retype

7MS #657: Writing Rad Security Documentation with Retype

Hello friends! Today we're talking about a neat and quick-to-setup documentation service called Retype. In a nutshell, you can get Retype installed on GitHub pages in about 5 minutes and be writing beautiful markdown pages (with built-in search) immediately. I still absolutely love Docusaurus, but I think Retype definitely gives it a run for its money.

10 Jan 20min

7MS #656: How to Succeed in Business Without Really Crying - Part 21

7MS #656: How to Succeed in Business Without Really Crying - Part 21

Happy new year friends! Today we talk about business/personal resolutions, including: New year's resolution on the 7MinSec biz side to have a better work/life balance New training offering in the works Considering Substack as a communications platform A mental health booster that I came across mostly by accident

3 Jan 45min

7MS #655: Happy Hacking Holidays

7MS #655: Happy Hacking Holidays

Today we're doing a milkshake of several topics: wireless pentest pwnage, automating the boring pentest stuff with cursor.ai, and some closing business thoughts at 7MinSec celebrates its 7th year as a security consultancy. Links discussed today: AWUS036ACH wifi card (not my favorite anymore) Panda PAU09 N600 (love this one!) The very important Github issue that helped me better understand BPFs and WPA3 attacks TrustedSec article on WPA3 downgrade attacks

30 Dec 202458min

7MS #654: Tales of Pentest Pwnage – Part 67

7MS #654: Tales of Pentest Pwnage – Part 67

Today we've got some super cool stuff to cover today! First up, BPATTY v1.4 is out and has a slug of cool things: A whole new section on old-school wifi tools like airmon-ng, aireplay-ng and airodump-ng Syntax on using two different tools to parse creds from Dehashed An updated tutorial on using Gophish for phishing campaigns The cocoa-flavored cherry on top is a tale of pentest pwnage that includes: Abusing SCCM Finding gold in SQL configuration/security audits

13 Dec 202441min

7MS #653: How to Succeed in Business Without Really Crying – Part 20

7MS #653: How to Succeed in Business Without Really Crying – Part 20

Hey friends, today we're talking about tips to effectively present your technical assessment to a variety of audiences – from lovely IT and security nerds to C-levels, the board and beyond!

6 Dec 202449min

7MS #652: Securing Your Mental Health - Part 6

7MS #652: Securing Your Mental Health - Part 6

Today's episode talks about some things that helped me get through a stressful and hospital-visit-filled Thanksgiving week, including: Journaling Meditation (An activity I'm ashamed of but has actually done wonders for my mental health)

2 Dec 202441min

7MS #651: Tales of Pentest Pwnage – Part 66

7MS #651: Tales of Pentest Pwnage – Part 66

Hey friends, we've got a short but sweet tale of pentest pwnage for you today. Key lessons learned: Definitely consider BallisKit for your EDR-evasion needs If you get local admin to a box, enumerate, enumerate, enumerate! There might be a delicious task or service set to run as a domain admin that can quickly escalate your privileges!

22 Nov 202431min

7MS #650: Tales of Pentest Pwnage - Part 65

7MS #650: Tales of Pentest Pwnage - Part 65

Oooooo, giggidy! Today is (once again) my favorite tale of pentest pwnage. I learned about a feature of PowerUpSQL that helped me find a "hidden" SQL account, and that account ended up being the key to the entire pentest! I wonder how many hidden SQL accounts I've missed on past pentests….SIGH! Check out the awesome BloodHound gang thread about this here. Also, can't get Rubeus monitor mode to capture TGTs to the registry? Try output to file instead: rubeus monitor /interval:5 /nowrap /runfor:60 /consoleoutfile:c:\users\public\some-innocent-looking-file.log In the tangent department, I talk about a personal music project I'm resurrecting to help my community.

15 Nov 202453min

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