How to call VNC / RFB dissector from my lua dissector?
I can't find it in Dissector.list()
I can't find it in Dissector.list()
VNC is not registered as a dissector. See end of packet-vnc.c:
#define VNC_PORT_RANGE "5500-5501,5900-5901" proto_reg_handoff_vnc(void) { vnc_handle = create_dissector_handle(dissect_vnc, proto_vnc); dissector_add_uint_range_with_preference("tcp.port", VNC_PORT_RANGE, vnc_handle); heur_dissector_add("tcp", test_vnc_protocol, "VNC over TCP", "vnc_tcp", proto_vnc, HEURISTIC_ENABLE);
It's a subdissector to the tcp.port
table.
There is an example of getting a subdissector at the end of the Wiki page for Lua/Dissectors:
local tcp_dissector_table = DissectorTable.get("tcp.port") original_http_dissector = tcp_dissector_table:get_dissector(80)
Here is an example getting the VNC dissector based on the port number 5500:
local tcp_port_table = DissectorTable.get("tcp.port") local vnc_dissector = tcp_port_table:get_dissector(5500) print (vnc_dissector) print "----------"
10/17/2021 1:34:40 PM Console opened 10/17/2021 1:35:08 PM VNC 10/17/2021 1:35:08 PM ----------
A sentence or two in the WSDG and/or README.dissector describing "subdissector" (and "sub-dissector" and "sub-protocol dissector" and "subprotocol dissector") might help to reason why not all dissectors (or in this case, subdissector) are registered in the dissector table.
Please start posting anonymously - your entry will be published after you log in or create a new account.
Asked: 2021-10-17 07:46:31 +0000
Seen: 234 times
Last updated: Oct 17 '21
how to invert two bytes in lua script dissector ?
Adjusting Bit order and Endianess in LUA between Dissectors
Error while creating a Lua listener in 2.4.2 with filter
http2 decrypted data in tshark lua script
Decode as LUA - how do I do that?
LUA: dissector wide global table
Reuse (part of) a Wireshark Dissector