Powershell

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PowerShell (POSH) is a a task automation command-line shell and scripting language created by Microsoft. It became part of the FOSS community in 2016 and is now available across Windows, Linux, and macOS

Resources:

Install PowerShell – Instructions for Windows, Linux, and macOS
PowerShell Galley Your one-stop shop community and Microsoft modules.
PowerShell Repository – View the PowerShell source code, report issues, or contribute to the project yourself.
PowerShell Community Call – Hear from and talk directly to the product team on the 3rd Thursday of every month
PowerShell in Visual Studio Code – It’s time to say goodbye to ISE

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PowerShell Weekly for September 20, 2024 (self.powershell)

submitted 3 months ago by pwshguy to c/powershell

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Blogs, Articles, and Posts

Get-Mailbox Versus Get-ExoMailbox
Microsoft's advice is to use the Get-ExoMailbox cmdlet instead of its older Get-Mailbox counterpart. Generally, this is good advice that you should follow. However, the older cmdlet can do a job in certain circumstances, so don’t write it off completely. More importantly, make sure that filtering of objects is done using server-side filters. This will improve script performance significantly.
Simple Tip for GitHub Copilot
If you have GitHub Copilot, you may or may not know about this little tip, but wanted to let you know just in case. It has saved me so much time and it can be applied to a lot of scenarios.
Query the required permissions of a Microsoft Graph cmdlet
Microsoft Graph can be difficult sometimes. There are loads of PowerShell Microsoft Graph Modules and cmdlets that require different permissions. In this blog post, I will show you how to query the permissions for a cmdlet, multiple cmdlets, or all cmdlets from a specific Microsoft Graph module.
Exploiting Exchange PowerShell After ProxyNotShell: Part 3 – DLL Loading Chain for RCE
As you may know, I recently presented my Exchange-related talk during OffensiveCon 2024. This series of 4 blog posts is meant to supplement the talk and provide additional technical details. In this article, part 3 of the series, I describe a chain of 3 vulnerabilities that led to remote code exec
Attacking PowerShell CLIXML Deserialization
In this article, we will learn that using PowerShell’s CLIXML deserialization could lead to undesired effects, including remote code execution. We will also see that widely used solutions, like PowerShell Remoting and PowerShell Direct (Hyper-V), rely on such deserialization and could make you vulnerable to this kind of attack.

Projects, Scripts, and Modules

Tabby
Tabby (formerly Terminus) is a highly configurable terminal emulator, SSH and serial client for Windows 10, macOS and Linux

Books, Media, and Learning Resources

PowerShell Advanced Functions: Getting Started Guide
Advanced functions take your PowerShell development to the next level, letting you create cmdlet-like scripts with advanced features. In this article, we’ll dive into what makes cmdlets and advanced functions essential in PowerShell, with examples and tips to help you master them. What is a cmdlet? A PowerShell cmdlet (pronounced “command-let”) performs a specific task
PnP PowerShell Changed!!! ACT NOW
In this video, I will show you about a big change in the way PnP PowerShell will work going forward. You might be facing an issue right now when you are working with PnP PowerShell. Watch this video to know how you can resolve this and get going.
Harness AI to Analyze Your Workflow with Custom PowerShell Scripts
In this video, Doug Finke, a 16-time Microsoft MVP, showcases his PowerShell function GetWhatIWorkedOn. This tool helps you effortlessly track and summarize the files you've worked on over any specified period. By scanning multiple directories, it lists all the files you've modified, giving you a clear picture of your recent activities.

Community

Building Modern PowerShell Solutions: Justin Grote on TUIs, .NET, and Module Magic
In this episode, we chat with Justin Grote about his work with PwshSpectreConsole and the power of TUIs in PowerShell scripting. Justin takes us through his impressive collection of PowerShell modules—ModulePath, GallerySync, and ModuleFast—and how they enhance the PowerShell experience. We also explore the advantages of .NET's Common Language Runtime (CLR) in PowerShell, using Spectre.Console as a prime example. Finally, Justin shares his thoughts on transitioning from Windows PowerShell to PowerShell 7 and the performance and feature benefits that come with the upgrade.
Scriptember Live: "PowerShell Is Fun - Episode 2" with Microsoft MVP Harm Veenstra
In this live stream, we'll talk about how to have fun with PowerShell while improving IT automation tasks and processes.

Fun

Friday the 13th PowerShell Fun
Well here are once again and another Friday the 13th. I love these days because I feel challenged to come up with 13 PowerShell related tidbits which I hope you'll find fun and maybe even a little educational. Manage and Report Active Directory, Exchange and Microsoft 365 withManageEngine ADManager Plus - Download Free Trial Exclusive...

Check out psweekly.dowst.dev for all past editions as well as a searchable archive.

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