7MS #478: Password Cracking in the Cloud - Part 4
7 Minute Security29 Heinä 2021

7MS #478: Password Cracking in the Cloud - Part 4

Hey friends, today we're continuing our discussion of password cracking by sharing some methodology that has helped us get a high cred yield, and some tips on taking cracked passwords from multiple sources and Frankensteining them into a beautiful report for your customer.

For some background, when 7MS started as a biz, we used to crack passwords in Paperspace but invested in an on-prem cracking rig a few years ago. That rig has been flipping sweet, but had some heating issues which prompted me to send the system in for warranty and use an awesome cracking rig in AWS in the meantime.

Whether you're cracking locally or in the cloud, here's a quick methodology that has cracked many a hash for us:

  • Do a straight-up hashcat crack against the PwnedPasswords list (at time of this writing I don't have a good source for the cracked versions of these passwords. I used to grab them at hashes.org. Anybody got an alternative?

  • Do a straight-up hashcat crack through the RockYou2021 list

  • Run the hatecrack methodology, including the quick crack, the quick crack with rules (I'm partial to OneRuleToRuleThemAll), and brute-forcing all 1-8 character passwords

Once I'm ready to wrap up all the cracked passwords and put them in a nice shiny report for the customer, I do the following (using hashcombiner and pipal):

# Run hash_combiner on hashcat’s pot file and write results to a file python /opt/hc/hash_combiner.py user_hash /opt/hashcat/hashcat.potfile > /tmp/round1.txt # Run hash_combiner on hatecrack’s pot file and write results to a file python /opt/hc/hash_combiner.py user_hash /opt/hatecrack/hashcat.pot > /tmp/round2.txt # Cat the two files together into a third file cat /tmp/round1.txt /tmp/round2.txt > /tmp/round3.txt # Sort and de-dupe the third file cat /tmp/round3.txt | sort -uf > /tmp/nice-and-clean.txt # Take just the passwords out of the “nice and clean” output cut -d ':' -f 2 /tmp/nice-and-clean.txt > /tmp/pipal-temp.txt # Score the passwords using pipal /opt/pipal/pipal.rb /tmp/pipal-temp.txt > /tmp/pip-final.txt

Now you've got a nice-and-clean.txt list of users and their cracked passwords, as well as the pip-final.txt with deeper analysis of cracked passwords, their commonalities, etc.

Jaksot(688)

7MS #689: Pwning Ninja Hacker Academy – Part 2

7MS #689: Pwning Ninja Hacker Academy – Part 2

Hello friends!  Today your friend and mine, Joe “The Machine” Skeen joins me as we keep chipping away at pwning Ninja Hacker Academy!  Today’s pwnage includes: “Upgrading” our Sliver C2 connection to a full system shell using PrintSpoofer! Abusing nanodump to do an lsass minidump….and find our first cred. Analyzing BloodHound data to find (and own) excessive permissions against Active Directory objects

22 Elo 15min

7MS #688: Building a Pentest Training Course Is Fun and Frustrating

7MS #688: Building a Pentest Training Course Is Fun and Frustrating

Today I talk about a subject I love while also driving me crazy at the same time: building a pentest training course! Specifically, I dissect a fun/frustrating GPO attack that I need to build very carefully so that every student can pwn it while also not breaking the domain for everybody else. I also talk about how three different flavors of AI failed me in solving a simple task.

16 Elo 22min

7MS #687: A Peek into the 7MS Mail Bag – Part 5

7MS #687: A Peek into the 7MS Mail Bag – Part 5

Hi friends, we’re doing something today we haven’t done in a hot minute: take a dip into the 7MinSec mail bag! Today we cover these questions: If I’m starting a solo business venture as a security consultancy, is it a good idea to join forces with other solo security business owners and form a consortium of sorts? Have you ever had anything go catastrophically wrong during a pentest?  Yes, and this is an important link in the story: https://github.com/fortra/impacket/issues/1436 What ever happened with the annoying apartment neighbor who stomped around like a rhino when you made any noise during COVID? What happened to the “difficult family situation” you vaguely talked about a few months ago that involved police and lawyers – did that ever get resolved?

11 Elo 57min

7MS #686: Our New Pentest Training Course is Almost Ready

7MS #686: Our New Pentest Training Course is Almost Ready

Oh man, I’m so excited I can hardly sleep. Our new three-day (4 hours per day) training is getting closer to general release. I talk about the good/bad/ugly of putting together an attack-sensitive lab that students can abuse (but hopefully not break!), and the technical/curriculum-writing challenges that go along with it.

1 Elo 23min

7MS #685: The Time My Neighbor Almost Got Scammed Out of $13K

7MS #685: The Time My Neighbor Almost Got Scammed Out of $13K

Today’s kind of a “story time with your friend Brian” episode: a tale of how my neighbor almost got scammed out of $13k.  The story has a lot of red flags we can all keep in mind to keep ourselves (as well as kids/friends/parents/etc.) safer from these types of shenanigans.

25 Heinä 22min

7MS #684: Pwning Ninja Hacker Academy

7MS #684: Pwning Ninja Hacker Academy

Hey friends, today we start pwning Ninja Hacker Academy – cool CTF-style lab that has you start with no cred and try to conquer domain admin on two domains!

18 Heinä 22min

7MS #683: What I'm Working on This Week - Part 4

7MS #683: What I'm Working on This Week - Part 4

This week I’m working on a mixed bag of fun security and marketing things: A pentest I’m stuck on My latest lab CTF obsession: Ninja Hacker Academy A cool “about 7MinSec” marketing video that was recorded in a pro studio!

12 Heinä 30min

7MS #682: Securing Your Family During and After a Disaster – Part 7

7MS #682: Securing Your Family During and After a Disaster – Part 7

Today’s episode is a downer! We talk about things you might want to have buttoned up for when you are eventually not alive anymore: Living will Buried vs. cremated? Funeral plans Funeral PHOTOS? I also talk about how my dad broke his ribs while trying to break a chimpmunk, and how a freak 4-wheeler accident also had my ribs in agony.

4 Heinä 30min

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