MalwareSourceCode/MSIL/Trojan-Downloader/Win32/D/Trojan-Downloader.Win32.Dapato.lnz-b8c384980c9f22185c34463ff696eecea0ea8f5afe9bfe8909d6e74753ffabcd/SmartAssembly/Zip/AESCryptoIndirector.cs

// Decompiled with JetBrains decompiler
// Type: SmartAssembly.Zip.AESCryptoIndirector
// Assembly: Java Update, Version=1.0.0.0, Culture=neutral, PublicKeyToken=null
// MVID: 9303C6B7-A9B1-42D1-950C-FCE2C64C3FE0
// Assembly location: C:\Users\Administrateur\Downloads\Virusshare.00004-msil\Trojan-Downloader.Win32.Dapato.lnz-b8c384980c9f22185c34463ff696eecea0ea8f5afe9bfe8909d6e74753ffabcd.exe

using System;
using System.IO;
using System.Reflection;
using System.Security.Cryptography;

namespace SmartAssembly.Zip
{
  public sealed class AESCryptoIndirector : IDisposable
  {
    private readonly Type m_AcspType;
    private readonly object m_AESCryptoServiceProvider;

    public AESCryptoIndirector()
    {
      try
      {
        this.m_AcspType = Assembly.Load("System.Core, Version=2.0.5.0, Culture=neutral, PublicKeyToken=7cec85d7bea7798e").GetType("System.Security.Cryptography.AesManaged");
      }
      catch (FileNotFoundException ex)
      {
        this.m_AcspType = Assembly.Load("mscorlib").GetType("System.Security.Cryptography.RijndaelManaged");
      }
      this.m_AESCryptoServiceProvider = Activator.CreateInstance(this.m_AcspType);
    }

    public ICryptoTransform GetAESCryptoTransform(
      byte[] key,
      byte[] iv,
      bool decrypt)
    {
      this.m_AcspType.GetProperty("Key").GetSetMethod().Invoke(this.m_AESCryptoServiceProvider, new object[1]
      {
        (object) key
      });
      this.m_AcspType.GetProperty("IV").GetSetMethod().Invoke(this.m_AESCryptoServiceProvider, new object[1]
      {
        (object) iv
      });
      return (ICryptoTransform) this.m_AcspType.GetMethod(decrypt ? "CreateDecryptor" : "CreateEncryptor", new Type[0]).Invoke(this.m_AESCryptoServiceProvider, new object[0]);
    }

    public void Clear() => this.m_AcspType.GetMethod(nameof (Clear)).Invoke(this.m_AESCryptoServiceProvider, new object[0]);

    public void Dispose() => this.Clear();
  }
}