7 Minute Security

Brian Johnson

7 Minute Security is a weekly information security podcast focusing on penetration testing, blue teaming and building a career in security. The podcast also features in-depth interviews with industry leaders who share their insights, tools, tips and tricks for being a successful security engineer.

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733 episodes
Updated Friday

Episodes733

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Sep 23, 2020 · 47 min
7MS #433: Cyber News - Security Skills Gap Edition
Hi! Today our pal Joe "The Machine" Skeen (a.k.a. Gh0sthax has prepared some cyber-licious actionable news stories for us to chew on. Today's stories include: Cybersecurity skills gap (powered by lack of career development!) Which cyber jobs are hot - or not? Mysterious wave of DDoS attacks The Magecart threat group pwns thousands of ecommerce sites On a parting note, don't forget to patch your DCs against Zerologon! Here's a great Twitter thread breakdown that explains it in more detail
Sep 16, 2020 · 44 min
7MS #432: Tales of Internal Network Pentest Pwnage - Part 21
Yay! It's time for another tale of pentest pwnage! Highlights include: Making sure you take multiple rounds of "dumps" to get all the delicious local admin creds. Why lsassy is my new best friend. I gave a try to using a Ubuntu box instead of Kali as my attacking system for this test. I had pretty good results. Here's my script to quickly give Ubuntu a Kali-like flair: sudo apt-get update sudo apt-get upgrade -y sudo apt-get install openssh-server -y sudo apt-get install nmap curl dnsrecon git net-tools open-vm-tools-desktop python3.8 python3-pip unzip wget xsltproc -y #Aha helps take output from testssl.sh and make it nice and HTML-y sudo git clone https://github.com/theZiz/aha.git /opt/aha #Awesome-nmap-grep makes it easy to grep nmap exports for just the data you need! sudo git clone https://github.com/leonjza/awesome-nmap-grep.git /opt/awesome-nmap-grep #bpatty is...well...bpatty! sudo git clone https://github.com/braimee/bpatty.git /opt/bpatty #CrackMapExec is...awesome sudo mkdir /opt/cme cd /opt/cme sudo curl https://github.com/byt3bl33d3r/CrackMapExec/releases/download/v5.1.0dev/cme-ubuntu-latest.1.zip -L -o cme.zip sudo unzip cme.zip sudo chmod +x ./cme #eyewitness is a nice recon tool for putting some great visualization behind nmap scans sudo git clone https://github.com/FortyNorthSecurity/EyeWitness.git /opt/eyewitness cd /opt/eyewitness/Python/setup sudo ./setup.sh #impacket is "a collection of Python classes for working with network protocols" #I currently primarily use it for ntlmrelayx.py sudo git clone https://github.com/CoreSecurity/impacket.git /opt/impacket cd /opt/impacket sudo pip3 install . #mitm6 is a way to tinker with ip6 and get around some ip4-level protections sudo git clone https://github.com/fox-it/mitm6.git /opt/mitm6 cd /opt/mitm6 sudo pip3 install -r requirements.txt # install service-identity sudo pip3 install service-identity # lsassy sudo python3 -m pip install lsassy #nmap-bootstrap-xsl turns nmap scan output into pretty HTML sudo git clone https://github.com/honze-net/nmap-bootstrap-xsl.git /opt/nmap-bootstrap-xsl #netcreds "Sniffs sensitive data from interface or pcap" sudo git clone https://github.com/DanMcInerney/net-creds /opt/netcreds #PCCredz parses pcaps for sensitive data sudo git clone https://github.com/lgandx/PCredz /opt/pcredz #Powersploit is "a collection of Microsoft PowerShell modules that can be used to aid penetration testers during all phases of an assessment" sudo git clone https://github.com/PowerShellMafia/PowerSploit.git /opt/powersploit #PowerupSQL is a tool for discovering, enumerating and potentially pwning SQL servers! sudo git clone https://github.com/NetSPI/PowerUpSQL.git /opt/powerupsql #responder is awesome for LLMNR, NBT-NS and MDNS poisoning sudo git clone https://github.com/lgandx/Responder.git /opt/responder
Sep 9, 2020 · 49 min
7MS #431: How to Succeed in Business Without Really Crying - Part 8
Today we're talking business! We've got some exciting news and updates to share with you since we last did a "crying" episode last fall: 7MS hired a VP of sales and marketing: Clyde Cooper! We've added some new tools to our tools/services gist: Having a true sales force for the first time has prompted us to invest in Salesforce. There are a few gotchas with signing up for a Salesforce trial and then migrating to a paid plan (discussed more in today's episode) We're trying to "eat our own dog food" and part of that includes good inventory management. For that we've started to play with Rumble and reaaaaaaaaaaalllly like it Recording an "about us" video with a production company is exciting, stressful and awkward Today I met the guy who wins the Internet (or at least LinkedIn) - he sent me a personalized video with an idea I'm definitely going to steal for future marketing initiatives For really no reason at all, I sing for you a bit in this episode On that note, I absolutely love this song. I feel like it's my family's theme song for the last year.
Sep 2, 2020 · 56 min
7MS #430: Interview with Dan DeCloss
Today we're thrilled to have our friend and PlexTrac CEO Dan DeCloss back to the program! (P.S. PlexTrac is launching runbooks as a feature - and you should definitely check out PlexTrac's upcoming Webinar about runbooks on September 9!). We also did a PlexTrac 101 Webinar with them recently! You may remember Dan from such podcasts as this one when we first talked to him in 2019. Dan and I have a lot in common in that we both started security companies about the same time, so I had a lot of questions for Dan around how business has been going since we last talked on the podcast. Today our topics/questions include: What are the (good) warning signs that a passion project you have could be a viable business? Why "having all the jobs there has ever been" is a great way to figure out it's time to start your own business :-) At what point does a side project have to become what you do for your day job? How do you safely prepare to quit a comfortable corporate life to life as a small biz owner? Do you go 100% on faith? Do you save your $ for a year so you can "float" your business for a while? Some combination of the two? How important is it to have the support of your friends/family when starting a new biz? Once you start a biz what are the best/worst things about wearing all the hats (engineering, sales, marketing, accounting, HR, etc.)? When is it time to hire additional resources or raise additional money to support your growing business? What marketing efforts are fruitful for a new security biz to spend time/money on? How do you decide what bells/whistles to add to PlexTrac? Follow your own roadmap? Let the customers drive your direction? Some combo of both? What new bells and whistles are coming to PlexTrac in the Webinar on September 9?! (Spoiler alert: RUNBOOKS!)
Aug 26, 2020 · 41 min
7MS #429: Cyber News - Free Bitcoin for Everybody Edition
Hola! We're back again with our amigo Joe "The Machine" Skeen (a.k.a. Gh0sthax) who has prepared some awesome and actionable news stories for us to digest. Today's stories include: The Twitter hack that promised free Bitcoin for everybody - with good coverage by Krebs and Threatpost Garmin's personal and painful experience with ransomware Joe offers 7 tips any org can use to reduce their likelihood of getting pwned with an attack or ransomware Are we ready to endure a cyber crisis? Would you fall for this social engineering attack?
Aug 19, 2020 · 53 min
7MS #428: Tales of Internal Network Pentest Pwnage - Part 20
Welcome to another fun tale of internal pentest pwnage! Today's tale includes these helpful informational tidbits: My understanding is that in order for mitm6 relay attacks to work against DCs, those DCs have to have LDAPS config'd properly. Use nmap -sV -p646 name.of.domain.controller to verify this (thanks this site for the tip!) PowerView is awesome when used with Find-InterestingDomainShareFile to find interesting files with the word password or sensitive or other helpful strings. eavesarp helped me identify some weird hosts on weird subnets sending regular bursts of traffic to "interesting" hosts! Check out this video from Black Hills Infosec to learn more. I've also got some personal updates for you, including: House updates Fighting with the man/woman upstairs My worst Webinar nightmare came true A socially distanced wedding singing experience
Aug 12, 2020 · 42 min
7MS #427: Interview with Ameesh Divatia from Baffle
Today we're thrilled to welcome Ameesh Divatia from Baffle back to the program. We first met Ameesh back in episode 349 and today he's back to discuss a slew of additional hot security topics, including: Misconfigured cloud databases Why is this such a common issue, and how can we address it? Wait wait wait...I just spun up a machine in Azure, AWS, Digital Ocean, etc. Isn't it secure because....it's the cloud? What tools can we use to better secure our cloud databases? How can we secure sensitive information as we migrate it from LAN side to the cloud? CCPA (California Consumer Privacy Act) What is the CCPA? How does it relate to GDPR? If I'm a Californian, what can I demand to know from companies as far as how they're using my data? What can't I demand to know? Will CCPA inspire folks to scrub their data from the hands of big companies and go more "off the grid?" Does CCPA only apply to California residents and companies? Secure data sharing What are the current challenges with secure data sharing in terms of monitoring the flow of data within their systems and their partners' systems, while addressing privacy concerns? What are some of the common mistakes companies make when sharing sensitive data internally or with partners/clients? What is Secure Multiparty Compute (SMPC) and how can it help with secure data sharing?
Aug 7, 2020 · 49 min
7MS #426: Tales of Internal Pentest Pwnage - Part 19
This podcast is sponsored by Arctic Wolf, whose Concierge Security teams Monitor, Detect and Respond to Cyber threats 24/7 for thousands of customers around the world. Arctic Wolf. Redefining cybersecurity. Visit Arcticwolf.com/7MS to learn more. First and foremost, I have to say that 7 Minute Security's official stance on toads is that nobody should be licking them at any time, for any reason. Also, I can neither confirm nor deny that toads can catch coronavirus. Listen to today's episode...it'll make more sense. We've got another swell tale of internal pentest pwnage for you today! Highlights include: If you've collected a ton of hashes with Responder, the included DumpHash.py gives you a lovely organized list of collected hashes! Here's one way you can grab the latest CME binary: curl https://github.com/byt3bl33d3r/CrackMapExec/releases/download/v5.0.1dev/cme-ubuntu-latest.zip -L -o cme.zip Note to self: I must've been using outdated CME forever, because the correct syntax to get the wdigest flag is now a little different: cme smb HOST -u localadmin -H "hash" --local-auth -M wdigest -o ACTION=enable If you're looking to block IPv6 (ab)use in your environment, this article has some great tips. When testing in an environment with a finely tuned SIEM, I highly recommend you download all the Kali updates and tools ahead of time, as sometimes just the call out to kali.org gets flagged and alerted on to the security team Before using the full hatecrack methodology, I like to run hashes straight through the list of PwnedPasswords from hashes.org (which appears to currently be offline) first to give the org an idea as to what users are using easy-to-pwn passwords. A question for YOU reading this: what's the best way to do an LSASS dump remotely without triggering AV? I can't get any of the popular methods to work. So pypykatz is my go-to. I learned that PowerView is awesome for finding attractive shares! Run it with Find-InterestingDomainShareFile to find, well, interesting files! Files with password or sensitive or admin in the title - and much more! Got to use PowerUpSQL to audit some MS SQL sauce, and I found this presentation (specifically slide ~19) really helpful in locating servers I could log into and any SQL vulnerabilities the boxes were ripe for.
Jul 30, 2020 · 37 min
7MS #425: DIY Pentest Dropbox Tips - Part 2
Today's episode is all about creating and deploying your own pentest dropbox! In part 1 I talked about some "gotchas" but this time around I'm ready to dump a whole slug of specific and updated tips on ya! Below are the tips covered in this episode that are better read than said: For the Windows VM Turn on RDP with PowerShell: Set-ItemProperty -Path 'HKLM:\System\CurrentControlSet\Control\Terminal Server'-name "fDenyTSConnections" -Value 0 Enable-NetFirewallRule -DisplayGroup "Remote Desktop" Change time zone with command line: tzutil /s "Central Standard Time" Install Chrome with PowerShell: $LocalTempDir = $env:TEMP; $ChromeInstaller = "ChromeInstaller.exe"; (new-object System.Net.WebClient).DownloadFile('http://dl.google.com/chrome/install/375.126/chrome_installer.exe', "$LocalTempDir\$ChromeInstaller"); & "$LocalTempDir\$ChromeInstaller" /silent /install; $Process2Monitor = "ChromeInstaller"; Do { $ProcessesFound = Get-Process | ?{$Process2Monitor -contains $_.Name} | Select-Object -ExpandProperty Name; If ($ProcessesFound) { "Still running: $($ProcessesFound -join ', ')" | Write-Host; Start-Sleep -Seconds 2 } else { rm "$LocalTempDir\$ChromeInstaller" -ErrorAction SilentlyContinue -Verbose } } Until (!$ProcessesFound) Install PowerUpSQL: Install-Module -Name PowerUpSQL Turn off sleepy time: powercfg.exe -change -standby-timeout-ac 0 Install DotNet 3.5: dism /online /Enable-Feature /FeatureName:"NetFx3" For the Kali VM Refresh the SSH keys: apt install openssh-server -y mkdir /etc/ssh/default_keys mv /etc/ssh/ssh_host_* /etc/ssh/default_keys/ dpkg-reconfigure openssh-server systemctl enable ssh.service systemctl start ssh.service Get SharpHound and Mimikatz: wget https://github.com/gentilkiwi/mimikatz/releases/download/2.2.0-20200519/mimikatz_trunk.zip wget https://github.com/BloodHoundAD/BloodHound/raw/master/Ingestors/SharpHound.exe Install pypykatz sudo pip3 install pypykatz Install CrackMapExec binaries (which at time of this publication is this one): curl https://github.com/byt3bl33d3r/CrackMapExec/releases/download/v5.0.1dev/cme-ubuntu-latest.zip -L -o cme.zip
Jul 22, 2020 · 33 min
7MS #424: Cyber News - Everything is Pwned Edition
Hello! We're back with our pal Joe "The Machine" Skeen (a.k.a. Gh0sthax) who has prepared some awesome and actionable news stories for us to digest. Today's stories include: Hackers are trying to steal admin passwords from F5 devices Secret service reports increase in hacked MSPs Most Popular Home Routers Have 'Critical' Flaws "Sigred" DNS vulnerability in Microsoft DNS
Jul 15, 2020 · 59 min
7MS #423: Tales of Internal Pentest Pwnage - Part 18
This is an especially fun tale of pentest pwnage because it involves D.D.A.D. (Double Domain Admin Dance) and varying T.T.D.A. (Time to Domain Admin). The key takeaways I want to share from these tests are as follows: Responder.py -i eth0 -rPv is AWESOME. It can make the network rain hashes like manna from heaven! Testing the egress firewall is easy with this script. Consider this SANS article for guidance on ports to lock down. Testing for MS14-025 is easy with this site. mitm6 and ntlmrelayx can work really well together to rain shells if you follow this article. It's especially handy/focused when you create a targets.txt that looks something like this: smb://CORP\Administrator@192.168.195.2 smb://CORP\Administrator@192.168.195.3 smb://CORP\brian.admin@192.168.195.7 192.168.195.7 192.168.195.10 Then save that as your targets.txt and run ntlmrelayx with ./ntlmrelayx.py -tf /targets.txt -socks -smb2support. From there, once you get active socks connections, you can connect to them directly with a full interactive shell with something like proxychains smbclient //192.168.195.2/ -U CORP/brian.admin I ran into a weird issue with CrackMapExec where the --local-auth flag didn't seem to be working so I ended up trying the binary version and then it worked like a champ! Looking to dump lsass a "clean" way? Try RDPing in directly to the victim machine, opening up taskmgr.exe, click the Details tab, then right-click lsass.exe and choose Create dump file and bam, done. Wanna spin up a quick SMB share from your Kali box? Try smbserver.py -smb2support share /share Then, once you've pulled back the lsass.dmp file, you can rip through it easily with: pip3 install pypykatz sudo pypykatz lsa minidump lsass.dmp > lsass.txt Then comb through lsass.txt and hopefully there will be some delicious and nutritious DA creds there for you to much on!
Jul 10, 2020 · 42 min
7MS #422: Eating the Security Dog Food - Part 2
SafePass.me is the only enterprise solution to protect organizations against credential stuffing and password spraying attacks. Visit [safepass.me](https://safepass.me/?7ms422 for more details, and tell them 7 Minute Security sent you to get a 10% discount! Today's episode continues the work we started in episode #419. We talk about the importance of having a good foundation of security documentation - including a reading out of the following policies: Acceptable use Data protection and privacy
Jul 1, 2020 · 36 min
7MS #421: Cyber News - Verizon DBIR Edition
Today my pal Gh0sthax and I pick apart the Verizon Data Breach Investigations Report and help you turn it into actionable items so you can better defend your network! I'm especially excited because today's episode marks two important 7MS firsts: The episode has been crafted by a professional podcast producer The episode has been transcribed by a professional transcription service
Jun 26, 2020 · 44 min
7MS #420: Tales of Internal Pentest Pwnage - Part 17
Today's episode is a fun tale of pentest pwnage! Interestingly, to me this pentest had a ton of time-sponging issues on the front end, but the TTDA (Time to Domain Admin) was maybe my fastest ever. I had to actually roll a fresh Kali VM to upload to the customer site, and I learned (the hard way) to make that VM disk as lean as possible. I got away with a 15 gig drive, and the OS+tools+updates took up about 12 gig. One of the biggest lessons I learned from this experience is to make sure that not only is your Kali box updated before you take it to a customer site (see this script), but you should make sure you install all the tool dependencies beforehand as well (specifically, Eyewitness, Impacket and MITM6). This pentest was also extremely time-boxed, so I tried to get as much bang out of it as possible. This included: Capturing hashes with Responder Checking for "Kerberoastable" accounts (GetUserSPNs.py -request -dc-ip x.x.x.x domain/user) Check for MS14-025 (see this article) Check for MS17-010 (nmap -Pn -p445 --open --max-hostgroup 3 --script smb-vuln-ms17-010 192.168.0.0/24 -oA vulnerable-2-eblue) and try this method of exploiting it Check for DNS zone transfer (dnsrecon -d name.of.fqdn -t axf) Test for egress filtering of ports 1-1024 Took a backup of AD "the Microsoft way" and then cracked with secretsdump: sudo python ./secretsdump.py -ntds /loot/Active\ Directory/ntds.dit -system /loot/registry/SYSTEM -hashes lmhash:nthash LOCAL -outputfile /loot/ad-pw-dump
Jun 17, 2020 · 40 min
7MS #419: Eating the Security Dog Food
Today we're talking about eating the security dog food! What do I mean by that? Well, a lot of security companies I worked for in the past preached to clients about the importance of having a good security program, but didn't have one of their own! I'm trying to break that pattern now that I'm in a position to lead an information security program for 7MS. In today's episode we talk about getting your company started with a good set of infosec policies/procedures. First up is a "mothership" infosec policy with the following sub-policies inside it: Acceptable Use Data Protection and Privacy Physical Security Tools and Technology Training and Awareness Reporting Oh, and the song I jazz/scat/sang coming out of the jingle was If I Were a Dog
Jun 11, 2020 · 44 min
7MS #418: Securing Your Mental Health
SafePass.me is the only enterprise solution to protect organizations against credential stuffing and password spraying attacks. Visit safepass.me for more details, and tell them 7 Minute Security sent you to get a 10% discount! Today's episode is all about mental health! I talk about some of my challenges with stress/anxiety and how I finally put on my big boy pants, dropped some misconceptions and decided to do something about it. Additionally, this episode contains references to: Jon Secada Arsenio Hall Lone Wolf McQuade
Jun 4, 2020 · 43 min
7MS #417: Vulnerability Scanning Tips and Tricks
Today's episode is all about getting the most value out of your vulnerability scans, including: Why, IMHO you should only do credentialed scans Policy tweaks that will keep servers from tipping over and printers from printing novels of gibberish ;-) How to make your scan report more actionable and less unruly Turning up logging to 11 (use with caution!) A small tweak to an external scan policy that can result in the difference between a successful or failed scan The nessusd.rules file is awesome for excluding specific hosts and services from your scans
May 28, 2020 · 35 min
7MS #416: Pi-hole 5.0
This podcast is sponsored by Arctic Wolf, whose Concierge Security teams Monitor, Detect and Respond to Cyber threats 24/7 for thousands of customers around the world. Arctic Wolf. Redefining cybersecurity. Visit Arcticwolf.com/7MS to learn more. Today we're talking about some of my favorite features of Pi-hole 5.0. Including: WARNING! WARNING! Upgrading from 4.x is a one-way operation! Per-client blocking (you can setup, for example, a group machines called "kids" and apply specific domain block/allow lists and domains to them) More granular detail (especially if there are issues) when blocklists get updated Better, richer debug log output I also talk about a great companion for yor Pi-hole: a command-line Internet speed test! Hat tip to Javali over at the 7MS forums who told me about this. Additionally, I briefly mention "Hashy" (the nickname of my password cracking rig), give you some stay-at-home streaming TV show recommendations, and give you a quick house rebuild update!
May 21, 2020 · 31 min
7MS #415: Cyber News
Today's episode kicks off a fun little experiment where my pal Joe Skeen and I cover some of the week's interesting security news stories, how they might affect you, and what you can do to make you and your company more secure. This week's stories: Salt stack RCE (Daily Swig / Cyber Scoop) Malware uses Corporate MDM as attack vector (Checkpoint) Critical vulns in Sharefile (Citrix) Shareholders sue Labcorp over their 'persistent' failure to secure data (Cyberscoop)
May 14, 2020 · 1 hr 4 min
7MS #414: Tales of Pentest Fail #4
SafePass.me is the only enterprise solution to protect organizations against credential stuffing and password spraying attacks. Visit safepass.me for more details, and tell them 7 Minute Security sent you to get a 10% discount! Today I'm excited to share more tales of pentest FAIL with you. Today's tales include: Accidentally scanning assets that belong to an agency that nobody should be messing with Delivering reports with vulnerabilities from somebody else's network Why it's important to write a report more than 15 minutes before delivery Lessons learned from firing a disgruntled employee