Hackvertor - AMF tags

gistfile1.txt

import string, struct

def encode(string, xml=False):
    string = string.encode('utf-8')
    if xml:
        const = '\x0f' # AMF0 XML document
        size = struct.pack("!L", len(string)) # Size on 4 bytes
    else:
        const = '' # AMF0 URI
        size = struct.pack("!H", len(string)) # Size on 2 bytes
    return const + size + string

def build_amf_packet(svc, xml_str):
    # Message
    array_with_one_entry = '\x0a' + '\x00\x00\x00\x01' # AMF0 Array
    msg = array_with_one_entry + encode(xml_str, xml=True)

    # Body
    target_uri = encode(svc) # Target URI
    response_uri = encode('foobar') # Response URI
    sz_msg = struct.pack("!L", len(msg))
    body = target_uri + response_uri + sz_msg + msg

    # Packet
    version = '\x00\x03' # Version
    headers = '\x00\x00' # No headers
    bodies = '\x00\x01' + body # One body
    packet = version + headers + bodies

    return packet

output = build_amf_packet("foo",input)