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(689)

7MS #594: Using PatchMyPC to Auto-Update Pentest Dropboxes

7MS #594: Using PatchMyPC to Auto-Update Pentest Dropboxes

Today we're talking about how you can use PatchMyPc to keep your home PC and/or pentest dropbox automatically updated with the latest/greatest patches!

23 Loka 202329min

7MS #593: Hacking Billy Madison - Part 3

7MS #593: Hacking Billy Madison - Part 3

Hey friends, today my Paul and I kept trying to hack the VulnHub machine based on the movie Billy Madison (see part 1 and 2). In our journey we learned some good stuff: Port knocking is awesome using utilities like knock: /opt/knock/knock 10.0.7.124 1466 67 1469 1514 1981 1986 Sending emails via command line is made (fairly) easy with swaks: swaks --to eric@madisonhotels.com --from vvaughn@polyfector.edu --server 192.168.110.105:2525 --body "My kid will be a soccer player" --header "Subject: My kid will be a soccer player" You could also use telnet and do this command by command - see this article from Black Hills Information Security for more info. Hyda works good for spraying FTP creds: hydra -l user -P passlist.txt ftp://192.168.0.1 Check out my quick cheat sheet about bettercap (see episode #522) for some syntax on extracting WPA handshake data from cap files: # ...it looks like the new standard hash type might be m22000 per this article (https://hashcat.net/forum/thread-10253.html). In that case, here's what I did on the pcap itself to get it ready for hashcat: sudo /usr/bin/hcxpcapngtool -o readytocrack.hc22000 wifi-handshakes.pcap # Then crack with hashcat! sudo /path/to/hashcat -m22000 readytocrack.hc2000 wordlist.txt

15 Loka 202338min

7MS #592: 7 Steps to Recover Your Hacked Facebook Account

7MS #592: 7 Steps to Recover Your Hacked Facebook Account

Today we're talking about 7 steps you can take to (hopefully) reclaim a hacked Facebook account. The key steps are: Ask Facebook for help (good luck with that) Put out an SOS on your socials Flag down the FBI Call the cops! Grumble to your attorney general Have patience Lock it down (once you get the account back)! Also, I have to say that this article was a fantastic resource in helping me create the outline above.

6 Loka 202319min

7MS #591: Tales of Pentest Pwnage - Part 52

7MS #591: Tales of Pentest Pwnage - Part 52

Today we talk about an awesome path to internal network pentest pwnage using downgraded authentication from a domain controller, a tool called ntlmv1-multi, and a boatload of cloud-cracking power on the cheap from vast.ai. Here's my chicken scratch notes for how to take the downgraded authentication hash capture (using Responder.py -I eth0 --lm) and eventually tweeze out the NTLM hash of the domain controller (see https://7ms.us for full show notes).

29 Syys 202333min

7MS #590: Hacking Billy Madison - Part 2

7MS #590: Hacking Billy Madison - Part 2

Today my Paul and I continued hacking Billy Madison (see part one here) and learned some interesting things: You can fuzz a URL with a specific file type using a format like this: wfuzz -c -z file,/root/Desktop/wordlist.txt --hc 404 http://x.x.x.x/FUZZ.cap To rip .cap files apart and make them "pretty" you can use tpick: tcpick -C -yP -r tcp_dump.pcap Or tcpflow: apt install tcpflow tcpflow -r To do port knocking, you can use the knock utility: sudo git clone https://github.com/grongor/knock /opt/knock knock 1.2.3.4 21 23 25 69 444 7777777

22 Syys 202313min

7MS #589: Tales of Pentest Pwnage - Part 51

7MS #589: Tales of Pentest Pwnage - Part 51

In today's tale of pentest pwnage we talk about: The importance of local admin and how access to even one server might mean instant, full control over their backup or virtualization infrastructure Copying files via WinRM when copying over SMB is blocked: $sess = New-PSSession -Computername SERVER-I-HAVE-LOCAL-ADMIN-ACCESS-ON -Credential * ...then provide your creds...and then: copy-item c:\superimportantfile.doc -destination c:\my-local-hard-drive\superimportantfile.doc -fromsession $sess If you come across PowerShell code that crafts a secure string credential, you may able to decrypt the password variable with: [System.Runtime.InteropServices.Marshal]::PtrToStringAuto([System.Runtime.InteropServices.Marshal]::SecureStringToBSTR($MyVarIWantToDecryptGoesHere))

15 Syys 202314min

7MS #588: Becoming a Sysmon Sensei with Amanda Berlin

7MS #588: Becoming a Sysmon Sensei with Amanda Berlin

Today Amanda Berlin from Blumira teaches us how to unlock the power of Sysmon so we can gain insight into the good, bad and ugly things happening on our corporate endpoints!  Key takeaways: Sysmon turns your windows logging up to 11, and pairs well with a config file like this one or this one. Careful if you are are running sysmon on non-SSD drives - the intense number of writes might bring that disk to its knees. Just getting started logging all the things with sysmon?  Why not pump those logs into a free logging/alerting system like Wazuh? I think it was SolarWinds log collector I was trying to think of while recording the show, not CloudTrail.

8 Syys 202324min

7MS #587: Hacking Billy Madison

7MS #587: Hacking Billy Madison

Today my pal Paul from Project7 and I hack the heck out of Billy Madison a vulnerable virtual machine that is celebrating its 7th anniversary this month!

1 Syys 202336min

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