7MS #478: Password Cracking in the Cloud - Part 4
7 Minute Security29 Juli 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.

Avsnitt(683)

7MS #146: Friday Infosec News and Links Roundup

7MS #146: Friday Infosec News and Links Roundup

Here are some of my favorite stories and links for this week! If you missed last week's BURN IT ALL! Webcast, it's now online as a Youtube video. There is still time to register for the Real World Web Penetration Testing Webinar. It's(Thursday, January 28 @ 1 p.m. CST) and $25 (cheap!) Trustwave is in big trouble after failing to find hackers under their noses. Their noses mustreally hurt because Mandiant was quick to point out the work done by Trustwave was "woefully inadequate." I'm scared of IoT stuff. Why? Oh, I don't know, because what happens when your Nest fails and leaves your buttcheeks freezing cold?!?!? Or what if hackers steal your doorbell, and thus your wifi password and pwn your network? Thankfully, OWASP now now has a top 10 for IoT stuff too. A researcher found some clever ways to abuse Lastpass with an exploit called Lostpass. Lastpassresponded with a security change wherein a Lastpass authentication from a new device requires approval via email. A new Sysinternals tool helps figure out if you have shady, unsigned files in c:\windows\system32. Oh, and for sure upgrade all your iThings ASAP. Apple patched some ugly security holes.

23 Jan 201610min

7MS #145: OFF-TOPIC - Sicario and The Walk

7MS #145: OFF-TOPIC - Sicario and The Walk

In today's off-topic episode I review two movies: Sicario and The Walk.

21 Jan 20167min

7MS #144: Shoulder-Surfing with Seasoned Pentesters

7MS #144: Shoulder-Surfing with Seasoned Pentesters

I recently had the opportunity to shoulder-surf with some seasoned Webapp pentesters, and wanted to share what I learned about their tools, techniques and methodologies.

18 Jan 20167min

7MS #143: Friday Infosec News and Links Roundup

7MS #143: Friday Infosec News and Links Roundup

Here are some of my fav' stories and links for this week! * Burn it all...The New Security Fundamentals **(Wednesday, January 20 @ 1 p.m. CST)**: a free Webinar on setting up the "*core technical things you need to do for your security program*." I've attended many Webinars from the BHIS group and they're always informative and humorous. * Real World Web Penetration Testing **(Thursday, January 28 @ 1 p.m. CST)**: a $25 Webinar on going through "*a real world penetration test. We will explore the methodology and procedures Secure Ideas follows as we test web applications. The course will also walk through some tricks and tips on how to focus your testing on likely flaws*." I have seen four of their recorded courses before and found them to be *absolutely* worth the money I spent, so I'm confident this upcoming session will be no exception. * Fortinet SSH backdoor not much to say except if you use any of the affected products, update immediately as they contain an SSH backdoor: * FortiOS v4.3.17 or any later version of FortiOS v4.3 (available as of July 9, 2014) * FortiOS v5.0.8 or any later version of FortiOS v5.0 (available as of July 28, 2014) * Any version of FortiOS v5.2 or v5.4 * Hacker sentenced to 334 years in prison for operating a phishing Web site similar to that of a legit banking Web site. Moral of the story? Don't do that. * Don't use IE 8, 9 or 10 anymore! unless you like to live dangerously.

15 Jan 20168min

7MS #142: OFF-TOPIC - Media Servers and Making a Murderer

7MS #142: OFF-TOPIC - Media Servers and Making a Murderer

This off-topic episode covers: * Media servers - I'm a newb in this area and could use your help in setting up a config that actually works! * Making a Murderer - this is a fantastic documentary on Netflix. Stop what you're doing (once you listen to this episode) and watch *immediately* please.

13 Jan 20168min

7MS #141: Happy (Belated) New Year!

7MS #141: Happy (Belated) New Year!

Happy (belated) new year! This episode is more of a "What am I listening to, a PBS telethon?!" kind of thing, and I'm sorry for that. But I want to cover: * Scheduling changes for 2016 - we're gonna be 3 times a week! * A new documentation project I'm working on called BPATTY (Brian's Pentesting and Technical Tips for You) * A way you can support the podcast financially.

11 Jan 20168min

7MS #140: OFF-TOPIC - Video Games I'm Currently Playing

7MS #140: OFF-TOPIC - Video Games I'm Currently Playing

This episode talks about some cool video games I've been playing lately: * Metal Gear Solid Phantom Pain (Xbox 360) * Rise of the Tomb Raider (Xbox 360) * Luminocity (iPhone) * Super Mario Maker (Wii U) I recommend 'em all!

8 Jan 20169min

7MS #139: Securing Your Life - Part 2

7MS #139: Securing Your Life - Part 2

Back in episode #93 I talked about securing your life - in other words, asking yourself "What would happen if I was dead right now? Do I have adequate insurance? Are my finances in order? How about estate planning?" This episode continues that train of thought, and I share some new changes I've made in my "life security" department.

8 Jan 20168min

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