7MS #463: DIY Pentest Dropbox Tips - Part 5
7 Minute Security14 Apr 2021

7MS #463: DIY Pentest Dropbox Tips - Part 5

In the last two episodes of this series (#449 and #450) we've been diving into how to not only speed up the process of spinning up a DIY pentest dropbox, but how to automate nearly the entire build process!

In today's episode we talk specifically about how to streamline the Windows 10 build process. As previously mentioned, this article is awesome for creating a core Win 10 answer file that will format C:, setup a local admin, login once to the configured desktop and then do whatever things you want it to do. Personally, I like having a single batch file get fired off that:

  • Sets the timezone with tzutil /s "Central Standard Time"

  • Stops the VM from falling asleep with powercfg.exe -change -standby-timeout-ac 0

  • Grabs and runs a PS file that does a ton of downloading and unzipping of files with:

invoke-webrequest https://somesite/somefile.zip -outfile c:\somewhere\somefile.zip expand-archive c:\somewhere\somefile.zip -destinationpath "c:\somewhere\extracted\"
  • Installs Windows updates with:
Install-PackageProvider -name nuget -force Install-Module PSWindowsUpdate -force Import-Module PSWindowsUpdate Get-WindowsUpdate Install-WindowsUpdate -AcceptAll -IgnoreReboot
  • Sets a new name for the machine:
Write-Host "Picking a new name for this machine...you'll need to provide your admin pw to do so" Rename-Computer -LocalCredential administrator -PassThru Write-Host "New name accepted!"
  • Does a set of actions depending on the IP range with this code (which sets the IP address to a variable and then does stuff if the machine sits in that subnet):
$ip = ((ipconfig | findstr [0-9].\.)[0]).Split()[-1] f ($ip -like "192.168.0.*") { Invoke-Webrequest https://somesite/somefile.ps1 -OutFile c:\someplace\somefile.ps1 }

Also, I talk in this episode about how I try to host these "seed" files as securely as possible using Amazon Lightsail instances, the built-in firewall, and LetsEncrypt.

Avsnitt(720)

7MS #279: Patching Solutions Bake-Off - Part 4

7MS #279: Patching Solutions Bake-Off - Part 4

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28 Sep 201715min

7MS #278: Interview with Rob Sell

7MS #278: Interview with Rob Sell

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21 Sep 201756min

7MS #277: Patching Solutions Bake-Off - Part 3

7MS #277: Patching Solutions Bake-Off - Part 3

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14 Sep 201713min

7MS #276: The CryptoLocker song

7MS #276: The CryptoLocker song

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6 Sep 201712min

7MS #275: Patching Solutions Bake-Off - Part 2

7MS #275: Patching Solutions Bake-Off - Part 2

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30 Aug 201711min

7MS #274: Speaking at ILTACON - Part 4

7MS #274: Speaking at ILTACON - Part 4

I'm back from Vegas! My talk went really well and I'm excited to tell you about it in today's episode. First, some conference/trip highlights: During the ILTACON conference I attended a great talk by ...

23 Aug 201715min

7MS #273: Speaking at ILTACON - Part 3

7MS #273: Speaking at ILTACON - Part 3

I ran out of time in episode #272 to tell you about why preparing to be a speaker for ILTACON was way more stressful that preparing for Secure360 a few months ago. The main points of difference/stress...

17 Aug 20179min

7MS #272: Speaking at ILTACON - Part 2

7MS #272: Speaking at ILTACON - Part 2

This is part 2 of a series focusing on public speaking - specifically for the ILTACON conference happening in Vegas this week. In this episode I share a high-level walkthrough of my talk and the 10 "B...

17 Aug 201711min

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