Get-System-Techniques

Scheduled Tasks

Create a Scheduled Task running as SYSTEM and execute a command, for example a BIND Shell and connect to it.

CreateProcess

Get a SYSTEM shell using CreateProcess PROC_THREAD_ATTRIBUTE_PARENT_PROCESS attribute

Token-Manipulation

Invoke-Token.ps1 - Slightly modified Invoke-TokenManipulation from Powersploit

Get-WinlogonTokenSystem.ps1 - Token Manipulation for WinLogon Process to get a SYSTEM Shell.

NamedPipe

Get a SYSTEM Shell over Named Pipe Impersonation

PSExec

Get a SYSTEM Shell using psexec:

PsExec.exe -accepteula -s -i cmd.exe I used Invoke-ReflectivePEInjection.ps1 to execute PsExec in memory with theese parameters. (Currently buggy, have to take a look)

Uso DLL

Drop WindowsCoreDeviceInfo.dll bind Shell in System32 Folder and load it afterwards using UsoClient.exe

Other

I will add other scripts with other techniques in the future.