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A short script to automate the process of RDP session hijacking.

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rdp security lateral-movement privilege-escalation windows hacking hijacking-methods

start-rdpsessiontakeover's Introduction

Start-RdpSessionTakeover

A short script to automate the process of RDP session hijacking. When run without any parameters it will enumerate all existing RDP sessions and prompt for a session to be taken over. This script requires local admin to run.

Main Features

Easy enumeration of sessions
Automatic configuration of RDP shadowing
Fast and easy lateral movement and privelege escalation

When To Use This Script

Perhaps you've owned a users who is a local administrator of a server. Another user who is a domain admin has a session on that server. With this you can quickly and easily begin viewing and/or interacting with their RDP session.

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start-rdpsessiontakeover's Issues

Doesn't work on some machines

In testing the script on a variety of machines I have discovered that it does not work as expected on all machines. On some systems it simply launches, then the shadow window opens, then it disappears. It seems the takeover works, but that the instance of mstsc then lives in the ether somewhere. Will need to figure out why this happens and address it.

Registry key to enable RDP shadowing not working on 2012 R2

When the script is run on a Windows Server 2012 R2 server it fails to create the registry key "shadow". The error returned is listed below. This occurs even when the user is a local admin. The user can create and modify the registry key with regedit with no issue.

New-ItemProperty : Requested registry access is not allowed.
At C:\Users\twellick_admin\Desktop\Start-RdpSessionHijack.ps1:20 char:1

New-ItemProperty -Path $RegPath -Name $Name -Value $value -PropertyTYpe DWORD -F ...

  + CategoryInfo          : PermissionDenied: (HKEY_LOCAL_MACH...rminal Services:String) [New-ItemProperty], SecurityException
  + FullyQualifiedErrorId : System.Security.SecurityException,Microsoft.PowerShell.Commands.NewItemPropertyCommand

Shadowing not working even when Shadow registry key set

When the script is run on a 2012 R2 server, even with the Shadow key manually set, an error of "Access is denied." is thrown when mstsc is run.

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