7MS #449: DIY Pentest Dropbox Tips - Part 3

7MS #449: DIY Pentest Dropbox Tips - Part 3

Happy new year! This episode continues our series on DIY pentest dropboxes with a focus on automation - specifically as it relates to automating the build of Windows 10, Windows Server 2019, Kali and Ubuntu VMs. Here's the resources I talk about in more detail on today's episode that helps make the automagic happen:

Windows VMs
This article from Windowscentral.com does a great job of walking you through building a Windows 10 unattended install. A key piece of the automation is the autounattend.xml file, which you can somewhat automatically build here, but I think you'll want to install the Windows System Image Manager to really get in the tech weeds and fully tweak that answer file. The handy AnyBurn utility will help you make ISOs out of your Windows 10 / Server 2019 customized builds.

Ubuntu VMs
I set out to build a Ubuntu 18.x box because Splashtop only supports a few Linux builds. I found a freakin' sweet project called Linux unattended installation that helps you build the preseed.cfg file (kind of like the Windows equivalent of an answer file). The area of preseed.cfg I've been spending hours dorking around with is:

d-i preseed/late_command string \

Under this section you can customize things to your heart's content. For example, you could automatically pull down and install all OS packages/updates and a bunch of third party utils you want:

in-target sh -c 'apt-get update'; \ in-target sh -c 'apt-get upgrade -y'; \ in-target sh -c 'apt-get install curl dnsrecon git net-tools nmap openssh-server open-vm-tools-desktop python3.8 python3-pip python-libpcap ubuntu-gnome-desktop unzip wget xsltproc -y'; \

Finally, the project provides a slick script that will wrap up your Ubuntu build plus an SSH key into a ready-to-go ISO:

build-iso.sh ~/.ssh/id_rsa.pub ~/Desktop/My-kool-kustomized-Ubuntu.iso

Awesome!

Kali VMs
There is some decent documentation on building a preseed.cfg file for Kali. But the best resource I found with some excellent prebuilt config file is this kali-preseed project.

Once your seed file is built, it's super easy to simply host it on a machine in your network and let Kali pull it during install. For example, if you've got a Linux box with Python on the network at 192.168.0.7, just make a temporary folder with the preseed.cfg file in it and then run:

sudo python3 -m http.server 80

Then, in your virtual environment, create a new VM and boot it to a Kali NetInstaller image. At the splash screen, hit Tab and it'll display a command line you can edit. Remove the line that says something like preseed/file=/cdrom/simple-cdd/default.preseed, add auto=true and then the URL path to your preseed file, such as url=http://192.168.0.7/preseed.cfg. The Kali will ask for a few questions, such as a username and hostname to configure, and then if you're watching your machine hosting preseed.cfg, you'll see your Kali machine grab the config file and take care of the rest from there!

Got a better/cooler/funner/faster/awesomer way to do this type of automation? Let us know!

Avsnitt(685)

7MS #316: How to Succeed in Business Without Really Crying - Part 3

7MS #316: How to Succeed in Business Without Really Crying - Part 3

In this episode I wanted to give you some cool/fun updates as it relates to 7MS the business! Specifically: A new member of the 7MS team (kinda!) The weird and varied projects I'm working on Upcoming podcast sponsors (probably in July) 7MS has a "real" office coming soon to the southern metro of MN (hopefully!)

28 Juni 201822min

7MS #315: Creating a Personal DR Plan - Part 2

7MS #315: Creating a Personal DR Plan - Part 2

As a continuation of last week's episode I'm now making a bit of progress in finding a good backup solution that protects USB backups both at rest and when pumped up to the cloud. I mentioned I've been using BackBlaze for backups (not a sponsor), and they allow you to backup USB drives as long as they're connected at least once every 30 days. That's cool. However, many of my USB drives are not encrypted, and I want to protect myself in the off chance that someone breaks in and steals all my stuff while those unencrypted drives are connected. My BackBlaze backup PC is just a little dinky box running Windows 10 Home, so I don't have access to BitLocker. I was gonna drop the ~$100 for the Windows 10 Pro upgrade, but I coincidentally was doing an endpoint security product evaluation at the same time, and so I grabbed a copy of ESET's DESLock (also not a sponsor) because it was on sale. Where I'm stuck now is that the USB drives are unlocked, and yet for some reason BB can't properly back them up. I've got a ticket into their support folks, and will update you once we get to part 3 of this miniseries.

21 Juni 201811min

7MS #314: Creating a Personal DR Plan

7MS #314: Creating a Personal DR Plan

You probably create DR plans for your business (or help other companies build them), but have you thought about creating one for yourself? Yeah, I know it's grim to think about "What will my loved ones do to get into my accounts, backups, photos, social media accounts..." but it's probably not a bad idea to prepare for that (spoiler alert: we all die at some point). Today I talk about how I'm beginning to build such a plan so my wife can take over for my/our online accounts. This plan includes: A "here's how I run all our technology" Google doc with domains I have registered, their expiration date, what their function is, etc. A how-to guide on restoring data from our online backup solution Implementation of a password manager

13 Juni 201815min

7MS #313: Push-Button Domain Admin Access

7MS #313: Push-Button Domain Admin Access

As I was preparing for my Secure 360 talk a month or so ago, I stumbled upon this awesome article which details a method for getting Domain Admin access in just a few minutes - without cracking passwords or doing anything else "loud." The tools you'll need are: PowerShell Empire DeathStar Responder Ntlmrelayx I've written up all the steps in a gist that you can grab here. Enjoy!

7 Juni 201818min

7MS #312: OFF-TOPIC - Boxing a Cat

7MS #312: OFF-TOPIC - Boxing a Cat

It has been a heck of a week (in a good way), and I'm taking a break from security so you can help me untangle a mystery that's been wrapped around my brain for years. I need you to help me figure out what this dude meant when he said that something was as frustrating "as boxing a cat." P.S. if you hate off-topic episodes no worries! We'll be back to our regularly scheduled security program next week!

30 Maj 201818min

7MS #311: How to Build a Cuckoo Sandbox

7MS #311: How to Build a Cuckoo Sandbox

This week I dove into building a Cuckoo Sandbox for malware analysis. There are certainly a ton of posts and videos out there about it, but this entry called Painless Cuckoo Sandbox Installation caught my eye as a good starting point. This article got me about 80% of the way there, and the last 20% proved to be problematic. I got some additional answers from the Cuckoo documentation but still left some answers to be desired. Through a lot of Googling, banging my head against the wall and looking at the GitHub issues list, I finally got everything working. I've taken my entire build process and included it as a gist here. Enjoy!

24 Maj 201815min

7MS #310: Secure the Radio Commercials

7MS #310: Secure the Radio Commercials

Last week I was in the recording studio to record three 7MS commercials aimed at churches. The goal was to educate them on some security topics and close with a "hook" to contact 7MS for help securing your church. The commercials themselves are embedded in this episode so please have a listen and let me know what you think! I'll also let you know (via the podcast) when these commercials hit the air. It's likely the station won't air in your area, but you can catch it on the interwebs if you so desire (thanks again for your support, mom).

18 Maj 201812min

7MS #309: Password Cracking in the Cloud - Part 2

7MS #309: Password Cracking in the Cloud - Part 2

Cracking passwords in the cloud is super fun (listen to last week's episode to learn how to build your own cracking box on the cheap at Paperspace)! In the last couple weeks, customers have asked me about doing a password strength assessment on their Active Directory environment. I asked around and read a bunch of blogs and found a method that I think: Extracts the hashes safely Parses down the dump to contain only the hashes (so that if somebody popped my Paperspace cloud-crackin' box, they'd have just a list of half-cracked hashes and that's it) Does the work pretty automagically I talk about this in more detail in today's podcast, and here's the gist you can follow with all the necessary commands to get AD crackin'!

9 Maj 201813min

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