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.

Tämä jakso on lisätty Podme-palveluun avoimen RSS-syötteen kautta eikä se ole Podmen omaa tuotantoa. Siksi jakso saattaa sisältää mainontaa.

Jaksot(730)

7MS #730: Baby's First Project Swarm

Hey friends! Still your grieving pal over here, but also your swarming friend and Protecting My Network Edge host — because this week I've been tinkering with something called Project Swarm and I've g...

10 Heinä 25min

7MS #729: Pwning Dracarys

Hey friends! Still your grieving pal over here, but also your happy hacking host — because today we're diving into baby's first Dracarys! (Yes, I'm probably pronouncing that wrong. Yes, I'm going to k...

4 Heinä 18min

7MS #728: Securing Your Family During and After a Disaster – Part 8

Hey friends! This is a tough one to write. My dad passed away on Friday, and instead of the hacker-y tech episode I had planned, I pivoted to something more personal — another installment of our "Secu...

30 Kesä 38min

7MS #727: Securing Your Mental Health – Part 7

Hello friends! It's been over a year since we did a dedicated mental health episode, so today I'm doing a big catch-up and running through my 7-point plan for being a more mentally secure me. None of ...

19 Kesä 21min

7MS #726: Baby's First Hermes

Hello friends! I've been on a bit of an AI agent journey lately, and today I'm sharing my experience ditching OpenClaw and going all-in on Hermes — a self-hosted AI agent built by Nous Research. A Net...

12 Kesä 22min

7MS #725: Building a Bulletproof Backup Solution

Hey friends! Backups are not as cool as pentesting, but boy do they matter when things go sideways. This week I'm sharing how a Proxmox backup disk space meltdown led me to a completely overhauled — a...

5 Kesä 21min

7MS #724: Tales of Pentest Pwnage - Part 85

Hey friends! Today we're going deep on external network pentesting — something I realize we've barely touched in however many episodes we've done. I'm currently in a long stretch of back-to-back exter...

29 Touko 30min

7MS #723: CARTP - Cloud Red Team Tactics for Attacking and Defending Azure - Part 1

Hello friends! Today's a hybrid episode — some security content up top about a new certification I've kicked off, followed by an aggressively quick trip to Tangent Town. Feel free to bail after the se...

23 Touko 32min