//根据经验，这个字符串是经过加密函数加密后的
//最后有个=号，你可能见过这样的,猜测这是“Desktop”的含义
SN.RegisterProductCode = "wfg783X8Joo=";
//检查权限类型，这个整个分析的关键
LicenseType lic = SN.Registered(1);
//刷新窗体显示的权限版本
this.RefreshFormTitle(lic);
//启动加密狗监听
this.StartDogListener();

//返回的LicenseType（枚举值，有Enterprise, Professional, Standerd, Trial, Free, Given）,我们想要的当然是枚举值=0的企业版。
//输入参数是lic许可文件路径和要注册的类型（1代表Desktop，这个我们可以不管，在这个程序注册的都是它）
public static LicenseType Register(string licPath, RegisterProduct regType = 1)
{LicenseType type2;//初始化为Free版，我就是就想让free的值赋成EnterpriseLicenseType free = LicenseType.Free;if (!File.Exists(licPath)) return free;//读取许可文件中的许可码string sn = ReadSN(licPath);//如果是Desktop，许可文件路径为C:\Users\Administrator\AppData\Local\AZMapstring path = GetLocalAZMapPath(RegisterProduct.Desktop) + "azmap_4";// 如果是Server，许可文件路径为X:\Program Files (x86)\ArcTiler\Desktop\4.9\AZMapstring str3 = GetLocalAZMapPath(RegisterProduct.Server) + "azmap_4";try{string r = "";bool flag = false;//规律一：SN长度为175-250个// IsSNLegality函数检查SN是否非法，其具体要求是SN长度为175-250个if (IsSNLegality(sn)){//规律二：SN的72位到104位与机器码加密后的字符串必须相等//我们想要flag的值返回为ture，就需要看SetSN函数返回值。获取机器码加密后的值是否与r相等。根据它提供的计算函数，我在VS把它生成出来了//如果SN从72位开始截取32位（即r值）与MCToR()函数返回值（获取机器码加密后的值）相当，则flag为真。r = sn.Substring(72, 32);flag = R.Instance.SetSN(r);}if (!flag) goto Label_02B4;//规律三：SN中至少有两个#号//将SN用#进行分割，从下文看，使用了strArray[1]，strArray[2]，说明至少有两个#号string[]strArray = sn.Split(new char[] { '#' });int result = 0;//规律四：#号分割后的SN，strArray[1]为版本类型代码加密后的值// 用Decode函数将strArray[1]解密后转为int类型，out给result（是LicenseType的代码），我们的目的是想将Enterprise（当Version =0，1，2时，其代码-1，-11，-21），根据调试，本程序当Version =0，所以，我们是想把-1out给result//如果Decode解密后的值不是数字，则TryParse转换失败，将返回为False值，那就完蛋了。if (!int.TryParse(EncAndDec.Decode(strArray[1], EncAndDec.ToMD5("KEY_64"), EncAndDec.ToMD5("IV_64")), out result)){free = LicenseType.Trial;return LicenseType.Trial;}//经测试，其他Version为0，所以，Version=1，2的代码忽略掉了if (ApplicationConfig.Version == 0){//在VS测试，能够得到 result=-1，达到了free的值赋成Enterprise的目的switch (result){case -1:free = LicenseType.Enterprise;// 转换到Label_0170，这应该是脱壳没干净的原因，不然不会有跳转goto Label_0170;case -3:free = LicenseType.Professional;goto Label_0170;case -5:free = LicenseType.Standerd;goto Label_0170;case -7:free = LicenseType.Free;goto Label_0170;case -9:free = LicenseType.Given;goto Label_0170;}//如果没有跳转，那又完蛋了if (result <= 0){free = LicenseType.Free;return LicenseType.Free;}free = LicenseType.Trial;}else if (ApplicationConfig.Version == 1){……}else if (ApplicationConfig.Version == 2){……}//假设大家都成功跳转过来了，在这里见到大家表示很高兴，如果没有来到这里，在VS里面多调试一下代码。Label_0170:// 这个程序不是Server，所以不管if (regType == RegisterProduct.Server) path = str3;//因为我们是LicenseType.Enterprise，所以要执行下面的语句if (free != LicenseType.Trial){//设置许可类型为free，此时free已为LicenseType.EnterpriseR.Instance.SetLicenseType(free);//将这个有效的SN写入到注册文件，以便下次检测File.WriteAllText(path, sn);//已经return了，后面不管了return free;}……}catch{type2 = LicenseType.Free;}finally{……}return type2;
}

//获取加密后的机器码
internal string MCToR()
{string s = string.Format("{0}{1}{2}{3}", new object[] { "a71z", this.GetCpuId(), "a91z", this.GetHDid() });using (MD5 md = new MD5CryptoServiceProvider()){byte[] buffer = md.ComputeHash(Encoding.UTF8.GetBytes(s));StringBuilder builder = new StringBuilder(0x20);for (int i = 0; i < buffer.Length; i++){builder.Append(buffer[i].ToString("x").PadLeft(2, '0'));}return builder.ToString();}
}//获取CUP序列号
internal string GetCpuId()
{try{string str = string.Empty;using (ManagementClass class2 = new ManagementClass("Win32_Processor")){foreach (ManagementObject obj2 in class2.GetInstances()){if (obj2.Properties["ProcessorId"] != null){str = obj2.Properties["ProcessorId"].Value.ToString();}obj2.Dispose();}}return str;}catch{return this.GetSystemName();}
}//获取系统名字
internal string GetSystemName()
{try{string str = string.Empty;using (ManagementClass class2 = new ManagementClass("Win32_Processor")){foreach (ManagementObject obj2 in class2.GetInstances()){if (obj2.Properties["SystemName"] != null){str = obj2.Properties["SystemName"].Value.ToString();}obj2.Dispose();}}return str;}catch (Exception){return "SystemName";}
}//获取硬盘序列号
internal string GetHDid()
{string str = string.Empty;using (ManagementClass class2 = new ManagementClass("Win32_DiskDrive")){using (ManagementObjectCollection.ManagementObjectEnumerator enumerator = class2.GetInstances().GetEnumerator()){if (enumerator.MoveNext()){ManagementObject current = (ManagementObject)enumerator.Current;if (current.Properties["Model"] != null){str = (string)current.Properties["Model"].Value;}current.Dispose();}}}if (str != null){str.ToString();}return str;
}//将字符串转为整型
public static bool TryParse(string s, out int result)
{return Int32.TryParse(s, NumberStyles.Integer, NumberFormatInfo.CurrentInfo, out result);
}//转MD5
public static string ToMD5(string KEY)
{byte[] bytes = Encoding.Default.GetBytes(KEY);MD5 md = new MD5CryptoServiceProvider();return BitConverter.ToString(md.ComputeHash(bytes)).Replace("-", "").Substring(0, 8);
}//加密函数
public  string Encode(string data, string KEY_64, string IV_64)
{KEY_64 =ToMD5(KEY_64);IV_64 = ToMD5(IV_64);byte[] bytes = System.Text.Encoding.ASCII.GetBytes(KEY_64);byte[] bytes2 = System.Text.Encoding.ASCII.GetBytes(IV_64);string result;using (System.Security.Cryptography.DESCryptoServiceProvider dESCryptoServiceProvider = new System.Security.Cryptography.DESCryptoServiceProvider()){int arg_34_0 = dESCryptoServiceProvider.KeySize;using (System.IO.MemoryStream memoryStream = new System.IO.MemoryStream()){using (System.Security.Cryptography.CryptoStream cryptoStream = new System.Security.Cryptography.CryptoStream(memoryStream, dESCryptoServiceProvider.CreateEncryptor(bytes, bytes2), System.Security.Cryptography.CryptoStreamMode.Write)){System.IO.StreamWriter streamWriter = new System.IO.StreamWriter(cryptoStream);streamWriter.Write(data);streamWriter.Flush();cryptoStream.FlushFinalBlock();streamWriter.Flush();result = System.Convert.ToBase64String(memoryStream.GetBuffer(), 0, (int)memoryStream.Length);}}}return result;
}//解密函数
public static string Decode(string data, string KEY_64, string IV_64)
{byte[] buffer3;string str;KEY_64 = ToMD5(KEY_64);IV_64 = ToMD5(IV_64);byte[] bytes = Encoding.ASCII.GetBytes(KEY_64);byte[] rgbIV = Encoding.ASCII.GetBytes(IV_64);try{buffer3 = Convert.FromBase64String(data);}catch{return null;}using (DESCryptoServiceProvider provider = new DESCryptoServiceProvider()){using (MemoryStream stream = new MemoryStream(buffer3)){using (CryptoStream stream2 = new CryptoStream(stream, provider.CreateDecryptor(bytes, rgbIV), CryptoStreamMode.Read)){str = new StreamReader(stream2).ReadToEnd();}}}return str;
}