mtanksl / amf.net

An implementation in C# of both AMF0 and AMF3 binary format that is used to serialize ActionScript object graphs.

AMF.net

An implementation in C# of both AMF0 and AMF3 binary format that is used to serialize ActionScript object graphs.

Install using NuGet

dotnet add package mtanksl.ActionMessageFormat --version 1.0.4

Why?

So, Flash is dead and Adobe will end support of Flash Player on December 31, 2020. I actually never used Flash and had no knowledge of it's build in communication protocol. It turns out that I had to automate a creepy old software written in Flash. Since I did not find any good library, I've written my own.

Audience

Probably nobody. But hey, It is fun to learn and implement a protocol. I kind liked this one (but no, I will never use it again).

Specification

Here is the official and .

How to serialize an object

var writer = new AmfWriter();

writer.WriteAmfPacket(new AmfPacket()
{
    Version = AmfVersion.Amf3,
    Headers = new List<AmfHeader>(),
    Messages = new List<AmfMessage>()
    {
        new AmfMessage()
        {
            TargetUri = "null",
            ResponseUri = "/1",
            Data = new CommandMessageExt()
            {
                Operation = 5,
                CorrelationId = "",
                TimeToLive = 0,
                Timestamp = 0,
                Headers = new { DSMessagingVersion = 1, DSId = "nil" },
                Body = new { },
                ClientId = null,
                Destination = "",
                MessageId = Guid.NewGuid().ToString()
            }
        }
    }
} );

How to deserialize an object

var reader = new AmfReader(writer.Data);

var packet = reader.ReadAmfPacket();

Object Viewer

I've also implemented a custom object viewer. Please note that IExternalizable classes need the definition models within the project. Use [TraitClass] and [TraitMember] attributes to map custom classes and properties.

Fiddler Inspector

I've also implemented a custom Fiddler Inspector. Please note that IExternalizable classes need the definition models within the project. Use [TraitClass] and [TraitMember] attributes to map custom classes and properties. To build, add a reference to C:\Users<USER>\AppData\Local\Programs\Fiddler\Fiddler.exe After build, copy all dlls to C:\Users<USER>\Documents\Fiddler2\Inspectors\

amf.net's Issues

Need help with externalized object

Hello mtanksl,

I really appreciated your work on this project. Nice job!!

I need to automate an old program just like you but this program sends Externalized object to server which I didn't know the map of it.

Is there any way I create a custom class with externalizable interface and see what is inside the request which program is sending.

I want to see inside of that externalized object that sended by program but don't know how to use [traitclass] or [traitmember]. I only got class name of externalized object from program but when I create a class in my code and give [trairclass]("name of the class from request send by program") I can't see anything inside that class. There is no members in it.

So please give me a hand about this.

Thx

Regards.

Use AMFPacket.Messages.Data in C# program

Not an issue per se, but I couldn't find anything elsewhere.

So I'm currently trying to create a program that reads AMF requests stored in a file (the file path passed through an argument in the terminal), and generates an AMF response based on the request.

I have a problem though: when reading an AMF packet and trying to read its data from its messages, I can't figure out a way to actually use the Data object in the message, I can only return its type through Console.WriteLine. This is probably due to my inexperience in C#, but can someone help me figure this out?

The included viewer can read the object just fine, so I probably am missing something here, but I can't figure out what.

Here's an extract of what I did:

                byte[] amfRequest = File.ReadAllBytes("the_path_to_my_file.req");
                var reader = new AmfReader(amfRequest);
                var packet = reader.ReadAmfPacket();

                Console.WriteLine(packet.Version);
                for (int i = 0; i < packet.Headers.Count; i++) {
                    var serializedHdr = packet.Headers[i].Data;
                    Console.WriteLine(serializedHdr);
                }
                for(int i = 0; i < packet.Messages.Count; i++)
                {
                    var serializedMsgTargetURI = packet.Messages[i].TargetUri;
                    var serializedMsgResponseURI = packet.Messages[i].ResponseUri;
                    var serializedMsgContent = packet.Messages[i].Data;

                    Console.WriteLine(serializedMsgTargetURI);
                    Console.WriteLine(serializedMsgResponseURI);
                    Console.WriteLine(serializedMsgContent);

                }

The terminal's output with a provided AMF request file:

And here's the viewer's output using the same request: