Working with PowerShell is often a joyous occasion, working with the latest and greatest technologies. Remoting from Linux to Windows and back again with the greatest ease, it is an interesting time to be involved with PowerShell. But what if you are in a situation where you do not have PowerShell remoting available, or not accessible because of firewall rules. Or even worse, you are in a virus outbreak and you need access to all systems to remediate a vulnerability. In this session I will go over what we can do in those scenarios, I will show how to connect to such systems and retrieve structured objects and execute and monitor code running on those systems.

1. Build an immutable application
infrastructure with Nano Server,
PowerShell DSC, and the
release pipeline
Ravikanth Chaganti
2017
Navigate around the edge with
PowerShell
Jaap Brasser
2018
@jaap_brasser

2. Agenda
• What is the use-case
• Mixed operating systems
• Non-uniform Configurations

3. PowerShell

4. Well Documented Environments

5. Nothing ever goes wrong

6. Retrieve the data

7. Demo
PowerShell Remoting

8. Demo
Summary
• Invoke commands using
PowerShell Remoting
• Retrieve information

9. Mixed Environment

10. Demo
PowerShell with PsExec

11. Demo
Summary
• Cleaned up PsExec output
• Execute PowerShell remote
• Use file share to share CliXml
• Convert to CliXml remote and
retrieve base64
• Convert Base64 locally to Object

12. Touches Disk

13. Demo
PowerShell OutputFormat

14. Demo
Summary
• PowerShell on PsExec
• Output formatted as Xml
• PowerShell converts this to
objects
• Structured content without
touching disk

15. Non-supported software

16. Demo
PowerShell over WMI & Registry

17. Demo
Summary
• Win32_Process
• Store output on disk
• Store output in registry
• Remotely query registry

18. Demo
Alternative Remoting Functions

19. Summary
• Use PowerShell to collect data
• Retrieve information from old OS
• Different methods
• PSRemoting
• PsExec
• Wmi

20. • Now: 15 min break
• Grab a coffee
• Stay here to enjoy next presentation
• Change track and switch to another room
• Ask me questions or meet me in a breakout session
room afterwards
Next Steps

21. Questions?

22. about_Jaap
@jaap_brasser• Speaker / Blogger / Tech Enthusiast
• PowerShell Conference EU/Asia
• Dutch PowerShell User Group
• PowerShell Gallery
• TechNet / MSTechCommunity
JaapBrasser.com/about