7MS #474: Password Cracking in the Cloud - Part 3
7 Minute Security30 Kesä 2021

7MS #474: Password Cracking in the Cloud - Part 3

Hey friends! Today we're dusting off an old mini-series about password cracking in the cloud (check out part 1 and part 2) and sharing some awesome info on building a monster of a cracking rig in AWS!

One reason we haven't talked about password cracking in the cloud in a while is because back in winter of 2019 I built baby's first password cracking. Unfortunately, this week, Hashy (the name I gave to the rig) is overheating, and GPUs are impossible to find, so what's a pentester to do?

Well, in today's episode I talk about this article from Sevnx which walks you through building a virtual password-cracking beast in the cloud. The article (complemented by a sweet video) will get you running in short order.

WARNING: running this instance is super expensive (the author warns the instance would cost ~$9k/month if you left it run continuously).

The steps are pretty straightforward, but between reboots I found that hashcat acted all wonky. Luckily, the article addresses that with this great tip:

Pro tip: Save the Cuda download somewhere. If you ever turn your cracker off and get errors running hashcat when you turn it back on, re-run the install line. We think AWS sometimes refreshes the drivers or something and hashcat doesn't like it very much.

If you need help installing one of my fave tools, hatecrack check out my password cracking in the cloud gist. Also, our buddy Joe pointed me towards a utility called duplicut to help de-dupe large password-cracking wordlists.

Once the AWS instance is setup, what kind of stats do we get out of this demon? Here's the result of hashcat -b:

Hashmode: 0 - MD5 Speed.#1.........: 55936.1 MH/s (47.79ms) @ Accel:32 Loops:1024 Thr:1024 Vec:8 Speed.#2.........: 55771.4 MH/s (47.94ms) @ Accel:32 Loops:1024 Thr:1024 Vec:8 Speed.#3.........: 55827.0 MH/s (47.88ms) @ Accel:32 Loops:1024 Thr:1024 Vec:8 Speed.#4.........: 55957.7 MH/s (47.78ms) @ Accel:32 Loops:1024 Thr:1024 Vec:8 Speed.#*.........: 223.5 GH/s Hashmode: 100 - SHA1 Speed.#1.........: 17830.1 MH/s (75.08ms) @ Accel:16 Loops:1024 Thr:1024 Vec:1 Speed.#2.........: 17774.0 MH/s (75.21ms) @ Accel:16 Loops:1024 Thr:1024 Vec:1 Speed.#3.........: 17780.9 MH/s (75.26ms) @ Accel:16 Loops:1024 Thr:1024 Vec:1 Speed.#4.........: 17795.6 MH/s (75.22ms) @ Accel:16 Loops:1024 Thr:1024 Vec:1 Speed.#*.........: 71180.6 MH/s Hashmode: 1400 - SHA2-256 Speed.#1.........: 7709.9 MH/s (86.84ms) @ Accel:8 Loops:1024 Thr:1024 Vec:1 Speed.#2.........: 7718.3 MH/s (86.75ms) @ Accel:8 Loops:1024 Thr:1024 Vec:1 Speed.#3.........: 7710.4 MH/s (86.75ms) @ Accel:8 Loops:1024 Thr:1024 Vec:1 Speed.#4.........: 7694.4 MH/s (87.02ms) @ Accel:8 Loops:1024 Thr:1024 Vec:1 Speed.#*.........: 30833.0 MH/s Hashmode: 1700 - SHA2-512 Speed.#1.........: 2399.8 MH/s (69.70ms) @ Accel:8 Loops:256 Thr:1024 Vec:1 Speed.#2.........: 2401.1 MH/s (69.68ms) @ Accel:8 Loops:256 Thr:1024 Vec:1 Speed.#3.........: 2397.3 MH/s (69.78ms) @ Accel:8 Loops:256 Thr:1024 Vec:1 Speed.#4.........: 2400.3 MH/s (69.70ms) @ Accel:8 Loops:256 Thr:1024 Vec:1 Speed.#*.........: 9598.5 MH/s Hashmode: 22000 - WPA-PBKDF2-PMKID+EAPOL (Iterations: 4095) Speed.#1.........: 866.5 kH/s (94.23ms) @ Accel:16 Loops:256 Thr:1024 Vec:1 Speed.#2.........: 866.7 kH/s (94.21ms) @ Accel:16 Loops:256 Thr:1024 Vec:1 Speed.#3.........: 865.6 kH/s (94.30ms) @ Accel:16 Loops:256 Thr:1024 Vec:1 Speed.#4.........: 866.7 kH/s (94.20ms) @ Accel:16 Loops:256 Thr:1024 Vec:1 Speed.#*.........: 3465.5 kH/s Hashmode: 1000 - NTLM Speed.#1.........: 102.2 GH/s (26.05ms) @ Accel:32 Loops:1024 Thr:1024 Vec:8 Speed.#2.........: 102.3 GH/s (26.05ms) @ Accel:32 Loops:1024 Thr:1024 Vec:8 Speed.#3.........: 102.2 GH/s (26.07ms) @ Accel:32 Loops:1024 Thr:1024 Vec:8 Speed.#4.........: 102.3 GH/s (26.04ms) @ Accel:32 Loops:1024 Thr:1024 Vec:8 Speed.#*.........: 409.0 GH/s Hashmode: 3000 - LM Speed.#1.........: 41104.7 MH/s (64.74ms) @ Accel:512 Loops:1024 Thr:64 Vec:1 Speed.#2.........: 40216.5 MH/s (66.11ms) @ Accel:512 Loops:1024 Thr:64 Vec:1 Speed.#3.........: 40507.3 MH/s (65.89ms) @ Accel:512 Loops:1024 Thr:64 Vec:1 Speed.#4.........: 39181.4 MH/s (68.13ms) @ Accel:512 Loops:1024 Thr:64 Vec:1 Speed.#*.........: 161.0 GH/s Hashmode: 5500 - NetNTLMv1 / NetNTLMv1+ESS Speed.#1.........: 55861.0 MH/s (47.87ms) @ Accel:32 Loops:1024 Thr:1024 Vec:2 Speed.#2.........: 55864.3 MH/s (47.87ms) @ Accel:32 Loops:1024 Thr:1024 Vec:2 Speed.#3.........: 55519.4 MH/s (47.98ms) @ Accel:32 Loops:1024 Thr:1024 Vec:2 Speed.#4.........: 55826.6 MH/s (47.89ms) @ Accel:32 Loops:1024 Thr:1024 Vec:2 Speed.#*.........: 223.1 GH/s Hashmode: 5600 - NetNTLMv2 Speed.#1.........: 3968.0 MH/s (84.37ms) @ Accel:4 Loops:1024 Thr:1024 Vec:1 Speed.#2.........: 3968.1 MH/s (84.38ms) @ Accel:4 Loops:1024 Thr:1024 Vec:1 Speed.#3.........: 3965.6 MH/s (84.38ms) @ Accel:4 Loops:1024 Thr:1024 Vec:1 Speed.#4.........: 3967.8 MH/s (84.37ms) @ Accel:4 Loops:1024 Thr:1024 Vec:1 Speed.#*.........: 15869.5 MH/s Hashmode: 1500 - descrypt, DES (Unix), Traditional DES Speed.#1.........: 1752.8 MH/s (95.32ms) @ Accel:32 Loops:1024 Thr:64 Vec:1 Speed.#2.........: 1729.3 MH/s (96.65ms) @ Accel:32 Loops:1024 Thr:64 Vec:1 Speed.#3.........: 1749.5 MH/s (95.53ms) @ Accel:32 Loops:1024 Thr:64 Vec:1 Speed.#4.........: 1740.6 MH/s (96.01ms) @ Accel:32 Loops:1024 Thr:64 Vec:1 Speed.#*.........: 6972.3 MH/s Hashmode: 500 - md5crypt, MD5 (Unix), Cisco-IOS $1$ (MD5) (Iterations: 1000) Speed.#1.........: 24882.8 kH/s (50.59ms) @ Accel:16 Loops:1000 Thr:1024 Vec:1 Speed.#2.........: 24828.0 kH/s (50.60ms) @ Accel:16 Loops:1000 Thr:1024 Vec:1 Speed.#3.........: 24865.7 kH/s (50.60ms) @ Accel:16 Loops:1000 Thr:1024 Vec:1 Speed.#4.........: 24849.6 kH/s (50.59ms) @ Accel:16 Loops:1000 Thr:1024 Vec:1 Speed.#*.........: 99426.0 kH/s Hashmode: 3200 - bcrypt $2*$, Blowfish (Unix) (Iterations: 32) Speed.#1.........: 69071 H/s (54.00ms) @ Accel:4 Loops:16 Thr:24 Vec:1 Speed.#2.........: 68818 H/s (54.25ms) @ Accel:4 Loops:16 Thr:24 Vec:1 Speed.#3.........: 68926 H/s (54.13ms) @ Accel:4 Loops:16 Thr:24 Vec:1 Speed.#4.........: 69013 H/s (54.04ms) @ Accel:4 Loops:16 Thr:24 Vec:1 Speed.#*.........: 275.8 kH/s Hashmode: 1800 - sha512crypt $6$, SHA512 (Unix) (Iterations: 5000) Speed.#1.........: 386.4 kH/s (84.04ms) @ Accel:8 Loops:256 Thr:1024 Vec:1 Speed.#2.........: 377.9 kH/s (85.68ms) @ Accel:8 Loops:256 Thr:1024 Vec:1 Speed.#3.........: 372.3 kH/s (86.76ms) @ Accel:8 Loops:256 Thr:1024 Vec:1 Speed.#4.........: 382.7 kH/s (84.51ms) @ Accel:8 Loops:256 Thr:1024 Vec:1 Speed.#*.........: 1519.3 kH/s Hashmode: 7500 - Kerberos 5, etype 23, AS-REQ Pre-Auth Speed.#1.........: 1177.0 MH/s (71.08ms) @ Accel:256 Loops:128 Thr:32 Vec:1 Speed.#2.........: 1175.4 MH/s (71.17ms) @ Accel:256 Loops:128 Thr:32 Vec:1 Speed.#3.........: 1171.5 MH/s (71.28ms) @ Accel:256 Loops:128 Thr:32 Vec:1 Speed.#4.........: 1177.4 MH/s (71.05ms) @ Accel:256 Loops:128 Thr:32 Vec:1 Speed.#*.........: 4701.3 MH/s Hashmode: 13100 - Kerberos 5, etype 23, TGS-REP Speed.#1.........: 1068.5 MH/s (78.29ms) @ Accel:32 Loops:1024 Thr:32 Vec:1 Speed.#2.........: 1069.4 MH/s (78.25ms) @ Accel:32 Loops:1024 Thr:32 Vec:1 Speed.#3.........: 1068.4 MH/s (78.32ms) @ Accel:32 Loops:1024 Thr:32 Vec:1 Speed.#4.........: 1068.6 MH/s (78.29ms) @ Accel:32 Loops:1024 Thr:32 Vec:1 Speed.#*.........: 4275.0 MH/s Hashmode: 15300 - DPAPI masterkey file v1 (Iterations: 23999) Speed.#1.........: 148.5 kH/s (93.95ms) @ Accel:8 Loops:512 Thr:1024 Vec:1 Speed.#2.........: 148.4 kH/s (93.99ms) @ Accel:8 Loops:512 Thr:1024 Vec:1 Speed.#3.........: 148.5 kH/s (93.96ms) @ Accel:8 Loops:512 Thr:1024 Vec:1 Speed.#4.........: 148.4 kH/s (93.95ms) @ Accel:8 Loops:512 Thr:1024 Vec:1 Speed.#*.........: 593.8 kH/s Hashmode: 15900 - DPAPI masterkey file v2 (Iterations: 12899) Speed.#1.........: 80610 H/s (80.47ms) @ Accel:4 Loops:256 Thr:1024 Vec:1 Speed.#2.........: 80606 H/s (80.47ms) @ Accel:4 Loops:256 Thr:1024 Vec:1 Speed.#3.........: 80596 H/s (80.48ms) @ Accel:4 Loops:256 Thr:1024 Vec:1 Speed.#4.........: 80378 H/s (80.46ms) @ Accel:4 Loops:256 Thr:1024 Vec:1 Speed.#*.........: 322.2 kH/s Hashmode: 7100 - macOS v10.8+ (PBKDF2-SHA512) (Iterations: 1023) Speed.#1.........: 1002.4 kH/s (78.60ms) @ Accel:32 Loops:31 Thr:1024 Vec:1 Speed.#2.........: 1002.4 kH/s (78.60ms) @ Accel:32 Loops:31 Thr:1024 Vec:1 Speed.#3.........: 1002.1 kH/s (78.62ms) @ Accel:32 Loops:31 Thr:1024 Vec:1 Speed.#4.........: 1002.7 kH/s (78.58ms) @ Accel:32 Loops:31 Thr:1024 Vec:1 Speed.#*.........: 4009.6 kH/s Hashmode: 11600 - 7-Zip (Iterations: 16384) Speed.#1.........: 897.6 kH/s (82.05ms) @ Accel:4 Loops:4096 Thr:1024 Vec:1 Speed.#2.........: 896.4 kH/s (82.09ms) @ Accel:4 Loops:4096 Thr:1024 Vec:1 Speed.#3.........: 893.3 kH/s (83.60ms) @ Accel:4 Loops:4096 Thr:1024 Vec:1 Speed.#4.........: 912.4 kH/s (81.95ms) @ Accel:4 Loops:4096 Thr:1024 Vec:1 Speed.#*.........: 3599.7 kH/s Hashmode: 12500 - RAR3-hp (Iterations: 262144) Speed.#1.........: 116.6 kH/s (60.91ms) @ Accel:16 Loops:16384 Thr:128 Vec:1 Speed.#2.........: 111.4 kH/s (63.61ms) @ Accel:16 Loops:16384 Thr:128 Vec:1 Speed.#3.........: 111.6 kH/s (63.63ms) @ Accel:16 Loops:16384 Thr:128 Vec:1 Speed.#4.........: 115.0 kH/s (61.81ms) @ Accel:16 Loops:16384 Thr:128 Vec:1 Speed.#*.........: 454.7 kH/s Hashmode: 13000 - RAR5 (Iterations: 32799) Speed.#1.........: 93248 H/s (54.69ms) @ Accel:16 Loops:128 Thr:1024 Vec:1 Speed.#2.........: 93202 H/s (54.72ms) @ Accel:16 Loops:128 Thr:1024 Vec:1 Speed.#3.........: 93009 H/s (54.70ms) @ Accel:16 Loops:128 Thr:1024 Vec:1 Speed.#4.........: 93241 H/s (54.69ms) @ Accel:16 Loops:128 Thr:1024 Vec:1 Speed.#*.........: 372.7 kH/s Hashmode: 6211 - TrueCrypt RIPEMD160 + XTS 512 bit (Iterations: 1999) Speed.#1.........: 672.2 kH/s (55.34ms) @ Accel:16 Loops:64 Thr:1024 Vec:1 Speed.#2.........: 672.1 kH/s (55.34ms) @ Accel:16 Loops:64 Thr:1024 Vec:1 Speed.#3.........: 671.4 kH/s (55.34ms) @ Accel:16 Loops:64 Thr:1024 Vec:1 Speed.#4.........: 672.2 kH/s (55.34ms) @ Accel:16 Loops:64 Thr:1024 Vec:1 Speed.#*.........: 2687.9 kH/s Hashmode: 13400 - KeePass 1 (AES/Twofish) and KeePass 2 (AES) (Iterations: 24569) Speed.#1.........: 111.2 kH/s (122.52ms) @ Accel:32 Loops:128 Thr:1024 Vec:1 Speed.#2.........: 111.1 kH/s (122.55ms) @ Accel:32 Loops:128 Thr:1024 Vec:1 Speed.#3.........: 111.2 kH/s (122.58ms) @ Accel:32 Loops:128 Thr:1024 Vec:1 Speed.#4.........: 111.2 kH/s (122.52ms) @ Accel:32 Loops:128 Thr:1024 Vec:1 Speed.#*.........: 444.7 kH/s Hashmode: 6800 - LastPass + LastPass sniffed (Iterations: 499) Speed.#1.........: 5944.3 kH/s (35.66ms) @ Accel:8 Loops:249 Thr:1024 Vec:1 Speed.#2.........: 5942.0 kH/s (35.66ms) @ Accel:8 Loops:249 Thr:1024 Vec:1 Speed.#3.........: 5939.0 kH/s (35.67ms) @ Accel:8 Loops:249 Thr:1024 Vec:1 Speed.#4.........: 5943.8 kH/s (35.66ms) @ Accel:8 Loops:249 Thr:1024 Vec:1 Speed.#*.........: 23769.0 kH/s Hashmode: 11300 - Bitcoin/Litecoin wallet.dat (Iterations: 200459) Speed.#1.........: 11370 H/s (73.48ms) @ Accel:2 Loops:1024 Thr:1024 Vec:1 Speed.#2.........: 11355 H/s (73.50ms) @ Accel:2 Loops:1024 Thr:1024 Vec:1 Speed.#3.........: 11369 H/s (73.49ms) @ Accel:2 Loops:1024 Thr:1024 Vec:1 Speed.#4.........: 11370 H/s (73.49ms) @ Accel:2 Loops:1024 Thr:1024 Vec:1 Speed.#*.........: 45464 H/s

For a real world example, I had ~1,500 NTLM hashes to crack that I ran through some of the hatecrack methodology, and here's how the instance performed:

  • 100 LM hashes discovered, all cracked in 7 minutes (heh, 7 minutes :-)
  • Ran hatecrack's quick crackw ith no rules: done in 7 minutes, cracked 108 accounts
  • Quick crack against one rule to rule them all: ran in 25 minutes, got got 271 new passwords
  • Ran extensive hatecrack methodology, it ran for a little over 2 hours and got 88 new passwords.

All said and done, about 1/3 of the passwords cracked in about 3 hours. Not bad!

Don't forget, the second you're done with your cracking efforts, SHUT THE BOX DOWN! Otherwise you're in for a sour surprise come AWS billing day :-(

On a few personal notes:

  • Last Comic Standing was the show I couldn't think of during the episode :-)

  • After a toxic non-toxic foam pit incident a few years ago, my family and I had another injury this weekend with a rented waterslide - the fun ended in a concussion!

Jaksot(683)

7MS #580: Hacking Tommy Callahan - Part 3

7MS #580: Hacking Tommy Callahan - Part 3

Today me and my pal Paul from Project7 did a live hacking session and finally got the Callahan Auto brake pad Web app back online! Hopefully you enjoyed this hacking series. The feedback has been great, so we may have to take a crack at Billy in the near future as well.

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7MS #579: Hacking Tommy Callahan - Part 2

7MS #579: Hacking Tommy Callahan - Part 2

Hey friends, today we're continuing our series on pwning the Tommy Boy VM on VulnHub VM! P.S. did you miss part one? Check it out on YouTube. Joe "The Machine" Skeen and I had a blast poking and prodding at the VM in hopes to fix the broken Callahan Auto brake-ordering Web app. Some tips/tricks we cover: It's always a good idea to look at a site's robots.txt file crunch is awesome for making wordlists fcrackzip is rad for cracking encrypted zip files dirbuster works well for busting into hidden files and subfolders exiftool works well to pull metadata out of images

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7MS #578: Interview with Mike Toole of Blumira

7MS #578: Interview with Mike Toole of Blumira

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7MS #577: Tales of Pentest Pwnage - Part 48

7MS #577: Tales of Pentest Pwnage - Part 48

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7MS #575: Annoying Attackers with ADHD - Part 2

7MS #575: Annoying Attackers with ADHD - Part 2

Hey friends! Today we're taking a second look at ADHD - Active Defense Harbinger Distribution - a cool VM full of tools designed to annoy/attribute/attack pesky attackers! The tools covered today include: PHP-HTTP-TARPIT A tool to confuse and waste bot/scanner/hacker time. Grab it here and check out our setup instructions: sudo git clone https://github.com/msigley/PHP-HTTP-Tarpit.git /opt/tarpit cd /opt/tarpit sudo mv la_brea.php /var/www/html/index.php cd /var/www/html/ # Delete the default HTMLM files that are there sudo rm DEFAULT .HTML FILES # Start/restart apache2 sudo service apache2 stop sudo service apache2 start # It's easier to see PHP-HTTP-TARPIT in action from command line: curl -i http://IP.RUNNING.THE.TARPIT Spidertrap This tool tangles Web visitors in a never-ending maze of pages with links! sudo git clone https://github.com/adhdproject/spidertrap.git /opt/spidertrap cd /opt/spidertrap # Open spidertrap.py and change listening port from 8080 to 80 sudo nano spidertrap.py # Run the trap sudo python3 spidertrap.py Weblabyrinth This tool presents visitors with a blurb of text from Alice in Wonderland. That text has links that takes them to...you guessed it...more Alice in Wonderland excerpts! I especially like that if you visit ANY folder or link inside Weblabyrinth, content is served (return code 200 for anything and everything). I had problems getting this running on a fresh Kali box so it's probably better to run right off the ADHD distro using their instructions.

9 Kesä 202333min

7MS #574: Annoying Attackers with ADHD

7MS #574: Annoying Attackers with ADHD

Hey friends! Today we're looking at ADHD - Active Defense Harbinger Distribution - a cool VM full of tools designed to annoy/attribute/attack pesky attackers! ADHD gets you up and running with these tools quickly, but the distro hasn't been updated in a while, so I switched to a vanilla Kali system and setup a cowrie SSH honeypot as follows (see 7ms.us for full list of commands).

2 Kesä 202336min

7MS #573: Securing Your Mental Health - Part 4

7MS #573: Securing Your Mental Health - Part 4

Today we're talking about reducing anxiety by hacking your mental health with these tips: Using personal automation to text people important reminders Using Remind to create a personal communication "class" with your family members Using Smartsheet (not a sponsor) to create daily email "blasts" to yourself about all the various project todos you need to tackle

26 Touko 202336min

7MS #572: Protecting Your Domain Controllers with LDAP Firewall

7MS #572: Protecting Your Domain Controllers with LDAP Firewall

Today we look at LDAP Firewall - a cool (and free!) way to defend your domain controllers against SharpHound enumeration, LAPS password enumeration, and the noPac attack.

19 Touko 202326min

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