python - how to create a layer for scapy?

Question

I'm trying to create unimplemented Bluetooth layers from scapy, but after trying several times I've got no result. All I have done, according to scapy documentation, is child class from Packet, and binding the new layer class to the upper one... Is it needed some other modification to make it work?

PS: I know it's not working because several packages are listed with wireshark and btmon but in scappy packet.show() does not appear

Edit:

The layer opcode i'm trying to implement is 0x33 < User Confirmation Request>. the bind layer is this:

bind_layers(HCI_Event_Hdr, HCI_Event_User_Confirmation_Request, code=0x33)

And the packet class is this:

    name = "User Confirmation Request"
    fields_desc = [LEMACField("address", None), IntField("number", 0)]
    
    def answers(self, other):
        if HCI_Command_Hdr not in other:
            return False

        return other[HCI_Command_Hdr].opcode == self.opcode

This layer is build by a BD_Address and a numeric value (4 octects/Bytes)

question from:https://stackoverflow.com/questions/65540913/how-to-create-a-layer-for-scapy

Answer 1

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