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(706)

7MS #145: OFF-TOPIC - Sicario and The Walk

7MS #145: OFF-TOPIC - Sicario and The Walk

In today's off-topic episode I review two movies: Sicario and The Walk.

21 Jan 20167min

7MS #144: Shoulder-Surfing with Seasoned Pentesters

7MS #144: Shoulder-Surfing with Seasoned Pentesters

I recently had the opportunity to shoulder-surf with some seasoned Webapp pentesters, and wanted to share what I learned about their tools, techniques and methodologies.

18 Jan 20167min

7MS #143: Friday Infosec News and Links Roundup

7MS #143: Friday Infosec News and Links Roundup

Here are some of my fav' stories and links for this week! * Burn it all...The New Security Fundamentals **(Wednesday, January 20 @ 1 p.m. CST)**: a free Webinar on setting up the "*core technical things you need to do for your security program*." I've attended many Webinars from the BHIS group and they're always informative and humorous. * Real World Web Penetration Testing **(Thursday, January 28 @ 1 p.m. CST)**: a $25 Webinar on going through "*a real world penetration test. We will explore the methodology and procedures Secure Ideas follows as we test web applications. The course will also walk through some tricks and tips on how to focus your testing on likely flaws*." I have seen four of their recorded courses before and found them to be *absolutely* worth the money I spent, so I'm confident this upcoming session will be no exception. * Fortinet SSH backdoor not much to say except if you use any of the affected products, update immediately as they contain an SSH backdoor: * FortiOS v4.3.17 or any later version of FortiOS v4.3 (available as of July 9, 2014) * FortiOS v5.0.8 or any later version of FortiOS v5.0 (available as of July 28, 2014) * Any version of FortiOS v5.2 or v5.4 * Hacker sentenced to 334 years in prison for operating a phishing Web site similar to that of a legit banking Web site. Moral of the story? Don't do that. * Don't use IE 8, 9 or 10 anymore! unless you like to live dangerously.

15 Jan 20168min

7MS #142: OFF-TOPIC - Media Servers and Making a Murderer

7MS #142: OFF-TOPIC - Media Servers and Making a Murderer

This off-topic episode covers: * Media servers - I'm a newb in this area and could use your help in setting up a config that actually works! * Making a Murderer - this is a fantastic documentary on Netflix. Stop what you're doing (once you listen to this episode) and watch *immediately* please.

13 Jan 20168min

7MS #141: Happy (Belated) New Year!

7MS #141: Happy (Belated) New Year!

Happy (belated) new year! This episode is more of a "What am I listening to, a PBS telethon?!" kind of thing, and I'm sorry for that. But I want to cover: * Scheduling changes for 2016 - we're gonna be 3 times a week! * A new documentation project I'm working on called BPATTY (Brian's Pentesting and Technical Tips for You) * A way you can support the podcast financially.

11 Jan 20168min

7MS #140: OFF-TOPIC - Video Games I'm Currently Playing

7MS #140: OFF-TOPIC - Video Games I'm Currently Playing

This episode talks about some cool video games I've been playing lately: * Metal Gear Solid Phantom Pain (Xbox 360) * Rise of the Tomb Raider (Xbox 360) * Luminocity (iPhone) * Super Mario Maker (Wii U) I recommend 'em all!

8 Jan 20169min

7MS #139: Securing Your Life - Part 2

7MS #139: Securing Your Life - Part 2

Back in episode #93 I talked about securing your life - in other words, asking yourself "What would happen if I was dead right now? Do I have adequate insurance? Are my finances in order? How about estate planning?" This episode continues that train of thought, and I share some new changes I've made in my "life security" department.

8 Jan 20168min

7MS #138: OFF-TOPIC - The Hateful Eight

7MS #138: OFF-TOPIC - The Hateful Eight

Looks like I'm one of the few people in the world who did NOT love this movie. I found it painful slow and claustrophobic. #diappointed.

7 Jan 20168min

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