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27. Using .NET in Powershell Part 1

  • Loaded assemblies in Powershell session
PS C:\> [AppDomain]::CurrentDomain.GetAssemblies()

GAC    Version        Location
---    -------        --------
True   v2.0.50727     C:\Windows\Microsoft.NET\Framework\v2.0.50727\mscorlib.dll
True   v2.0.50727     C:\Windows\assembly\GAC_MSIL\Microsoft.PowerShell.ConsoleHost\1.0.0.0__31bf3856ad364e35\Micros...
True   v2.0.50727     C:\Windows\assembly\GAC_MSIL\System\2.0.0.0__b77a5c561934e089\System.dll
True   v2.0.50727     C:\Windows\assembly\GAC_MSIL\System.Management.Automation\1.0.0.0__31bf3856ad364e35\System.Man...
True   v2.0.50727     C:\Windows\assembly\GAC_MSIL\Microsoft.PowerShell.Commands.Diagnostics\1.0.0.0__31bf3856ad364e...
True   v2.0.50727     C:\Windows\assembly\GAC_MSIL\System.Core\3.5.0.0__b77a5c561934e089\System.Core.dll
True   v2.0.50727     C:\Windows\assembly\GAC_MSIL\System.Configuration.Install\2.0.0.0__b03f5f7f11d50a3a\System.Con...
True   v2.0.50727     C:\Windows\assembly\GAC_MSIL\Microsoft.WSMan.Management\1.0.0.0__31bf3856ad364e35\Microsoft.WS...
True   v2.0.50727     C:\Windows\assembly\GAC_32\System.Transactions\2.0.0.0__b77a5c561934e089\System.Transactions.dll
True   v2.0.50727     C:\Windows\assembly\GAC_MSIL\Microsoft.PowerShell.Commands.Utility\1.0.0.0__31bf3856ad364e35\M...
True   v2.0.50727     C:\Windows\assembly\GAC_MSIL\Microsoft.PowerShell.Commands.Management\1.0.0.0__31bf3856ad364e3...
True   v2.0.50727     C:\Windows\assembly\GAC_MSIL\Microsoft.PowerShell.Security\1.0.0.0__31bf3856ad364e35\Microsoft...
True   v2.0.50727     C:\Windows\assembly\GAC_MSIL\System.Xml\2.0.0.0__b77a5c561934e089\System.Xml.dll
True   v2.0.50727     C:\Windows\assembly\GAC_MSIL\System.Management\2.0.0.0__b03f5f7f11d50a3a\System.Management.dll
True   v2.0.50727     C:\Windows\assembly\GAC_MSIL\System.DirectoryServices\2.0.0.0__b03f5f7f11d50a3a\System.Directo...
True   v2.0.50727     C:\Windows\assembly\GAC_32\System.Data\2.0.0.0__b77a5c561934e089\System.Data.dll

PS C:\>
  • Get the type of the Assembly
PS C:\> [AppDomain]::CurrentDomain.GetAssemblies() | ForEach-Object {$_.GetType()}

IsPublic IsSerial Name                                     BaseType
-------- -------- ----                                     --------
True     True     Assembly                                 System.Object
True     True     Assembly                                 System.Object
True     True     Assembly                                 System.Object
True     True     Assembly                                 System.Object
True     True     Assembly                                 System.Object
True     True     Assembly                                 System.Object
True     True     Assembly                                 System.Object
True     True     Assembly                                 System.Object
True     True     Assembly                                 System.Object
True     True     Assembly                                 System.Object
True     True     Assembly                                 System.Object
True     True     Assembly                                 System.Object
True     True     Assembly                                 System.Object
True     True     Assembly                                 System.Object
True     True     Assembly                                 System.Object
True     True     Assembly                                 System.Object

PS C:\>
  • Assemblies where IsPublic is True
PS C:\> [AppDomain]::CurrentDomain.GetAssemblies() | ForEach-Object {$_.GetType()} | Where-Object {$_.IsPublic -eq "True"}

IsPublic IsSerial Name                                     BaseType
-------- -------- ----                                     --------
True     True     Assembly                                 System.Object
True     True     Assembly                                 System.Object
True     True     Assembly                                 System.Object
True     True     Assembly                                 System.Object
True     True     Assembly                                 System.Object
True     True     Assembly                                 System.Object
True     True     Assembly                                 System.Object
True     True     Assembly                                 System.Object
True     True     Assembly                                 System.Object
True     True     Assembly                                 System.Object
True     True     Assembly                                 System.Object
True     True     Assembly                                 System.Object
True     True     Assembly                                 System.Object
True     True     Assembly                                 System.Object
True     True     Assembly                                 System.Object
True     True     Assembly                                 System.Object

PS C:\>
  • Use .Net class to print processes on the Machine
PS C:\> $Classes =  [AppDomain]::CurrentDomain.GetAssemblies() | ForEach-Object {$_.GetType()} | Where-Object {$_.IsPublic -eq "True"}
PS C:\> $Classes | Where-Object {$_.Name -eq "Process"}
PS C:\> $ProcClass = $Classes | Where-Object { $_.Name -eq "Process" }

List methods / properties of an object

PS C:\> $ProcClass | Get-Member
PS C:\> $ProcClass | Get-Member -MemberType Method
PS C:\> $ProcClass | Get-Member -MemberType Method -Static
PS C:\> $ProcClass::GetCurrentProcess()
PS C:\> $ProcClass.FullName
System.Diagnostics.Process
PS C:\>
PS C:\> [System.Diagnostics.Process]::GetCurrentProcess()
PS C:\> [System.Diagnostics.Process]::GetProcesses()
PS C:\> $ProcClass | Get-Member | Format-List *