iMessage协议分析

Apple公司全线在mac os与ios两个操作系统上内置了FaceTime与iMessage两个应用。完美替代运营商的短信与电话。并且FaceTime与iMessage的帐号不仅仅与Apple ID 绑定，同时也与使用这Apple ID的手机号码绑定，这样的漏洞自然给无孔不入的群发垃圾信息商们提供了后门。

研究怎么实现iMessage群发先是从XMPP协议开始的，因为Apple MAC os上的ichat是XMPP客户端，可以连接iMessage服务器，同时也可连接gtalk与weibo私信。但后面发现iMessage的服务器验证是加密，没办法实现非ichat XMPP客户端连接iMeesage服务器，那就自然没办法实现程序控制往iMeesage服务器批量发送信息。

只能通过MAC OS或者iOS自带的程序往iMeesage服务器发送信息，那要实现群发，自然只能想办法去调用自带的这ichat客户端，在MAC OS系统上Apple公司提供一种叫Apple script的脚本来自动实现任务。可能通过tell application "Messages"就可以激活iMessage客户端自动发送信息。 参考文章: https://blog.youkuaiyun.com

/*
* Des:iMessage自动发信协议
*/
public class MyProxy : RealProxy
{
String myURIString;
 MarshalByRefObject myMarshalByRefObject; 
[PermissionSet(SecurityAction.LinkDemand)]
   public MyProxy(Type myType) : base(myType)
   {
      // RealProxy uses the Type to generate a transparent proxy.
      myMarshalByRefObject = (MarshalByRefObject)Activator.CreateInstance((myType));
      // Get 'ObjRef', for transmission serialization between application domains.
      ObjRef myObjRef = RemotingServices.Marshal(myMarshalByRefObject);
      // Get the 'URI' property of 'ObjRef' and store it.
      myURIString = myObjRef.URI;
      Console.WriteLine("URI :{0}", myObjRef.URI);
   }
  
   [SecurityPermissionAttribute(SecurityAction.LinkDemand, Flags=SecurityPermissionFlag.Infrastructure)]
   public override IMessage Invoke(IMessage myIMessage)
   {
      Console.WriteLine("MyProxy.Invoke Start");
      Console.WriteLine("");
  
      if (myIMessage is IMethodCallMessage)
         Console.WriteLine("IMethodCallMessage");
  
      if (myIMessage is IMethodReturnMessage)
         Console.WriteLine("IMethodReturnMessage");
  
      Type msgType = myIMessage.GetType();
      Console.WriteLine("Message Type: {0}", msgType.ToString());
      Console.WriteLine("Message Properties");
      IDictionary myIDictionary = myIMessage.Properties;
      // Set the '__Uri' property of 'IMessage' to 'URI' property of 'ObjRef'.
      myIDictionary["__Uri"] = myURIString;
      IDictionaryEnumerator myIDictionaryEnumerator =
         (IDictionaryEnumerator) myIDictionary.GetEnumerator();
  
      while (myIDictionaryEnumerator.MoveNext())
      {
         Object myKey = myIDictionaryEnumerator.Key;
         String myKeyName = myKey.ToString();
         Object myValue = myIDictionaryEnumerator.Value;
  
         Console.WriteLine("\t{0} : {1}", myKeyName,
            myIDictionaryEnumerator.Value);
         if (myKeyName == "__Args")
         {
            Object[] myObjectArray = (Object[])myValue;
            for (int aIndex = 0; aIndex < myObjectArray.Length; aIndex++)
               Console.WriteLine("\t\targ: {0} myValue: {1}", aIndex,
                  myObjectArray[aIndex]);
         }
  
         if ((myKeyName == "__MethodSignature") && (null != myValue))
         {
            Object[] myObjectArray = (Object[])myValue;
            for (int aIndex = 0; aIndex < myObjectArray.Length; aIndex++)
               Console.WriteLine("\t\targ: {0} myValue: {1}", aIndex,
                  myObjectArray[aIndex]);
         }
      }
        
      IMessage myReturnMessage;
      myIDictionary["__Uri"] = myURIString;
      Console.WriteLine("__Uri {0}", myIDictionary["__Uri"]);
  
      Console.WriteLine("ChannelServices.SyncDispatchMessage");
      myReturnMessage = ChannelServices.SyncDispatchMessage(myIMessage);
  
      // Push return value and OUT parameters back onto stack.
  
      IMethodReturnMessage myMethodReturnMessage = (IMethodReturnMessage)
         myReturnMessage;
      Console.WriteLine("IMethodReturnMessage.ReturnValue: {0}",
         myMethodReturnMessage.ReturnValue);
  
      Console.WriteLine("MyProxy.Invoke - Finish");
  
      return myReturnMessage;
   }
}