Created
March 30, 2018 18:01
-
-
Save mattifestation/8958b4c18d8bca9e221b29252cfee26b to your computer and use it in GitHub Desktop.
A stealthier method of loading a .NET PE in memory - via the Assembly.LoadModule method
This file contains bidirectional Unicode text that may be interpreted or compiled differently than what appears below. To review, open the file in an editor that reveals hidden Unicode characters.
Learn more about bidirectional Unicode characters
$Domain = [AppDomain]::CurrentDomain | |
$DynAssembly = New-Object System.Reflection.AssemblyName('TempAssembly') | |
$AssemblyBuilder = $Domain.DefineDynamicAssembly($DynAssembly, [Reflection.Emit.AssemblyBuilderAccess]::Run) | |
$ModuleBuilder = $AssemblyBuilder.DefineDynamicModule('TempModule') | |
# Create a stub module that the in-memory module (i.e. this mimics the loading of a netmodule at runtime) will be loaded into. | |
$ModuleBuilder2 = $AssemblyBuilder.DefineDynamicModule('hello.dll') | |
$TypeBuilder = $ModuleBuilder.DefineType('TempClass', [Reflection.TypeAttributes]::Public) | |
$TypeBuilder.CreateType() | |
$HelloDllBytes = [Convert]::FromBase64String('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') | |
# Calling LoadModule doesn't pass through the internal nLoad method like Assembly/AppDomain.Load does. :) | |
$HelloDllModule = [TempClass].Assembly.LoadModule('hello.dll', $HelloDllBytes) | |
# Invoke the Hello method within the hello.dll module that was loaded in memory | |
$HelloDllModule.GetTypes()[0].GetMethod('Hello').Invoke($null, @()) |
Sign up for free
to join this conversation on GitHub.
Already have an account?
Sign in to comment