Discussion Sniff Packets / Implement Protocols

[Thony]

Hello, i would like to ask which method  do you guys use to  "Sniff Packets" from Client that are used to  add into the server and also  "How implement Client's Protocol into the  GameServer Project",  im asking it because i've saw many  server  packs of Goddess  Lindvior  stuck with  531 protocol only  and i would like  sniff currently packets and make any  lindvior "pack" work with the currently ncwest official client "558",  that's all!

 

Thanks , i'll be waiting for answers.

[vampir]

My problem is that i want allow the project to run with all kind of Lindvior protocols from the 1st one till the currently one, i've tried change stuff at  "ProtocolVersion.java"  file etc.. already but always when i try log in for example with  558 Lindvior Protocol,  the client  goes fine  for Character Creation etc  but once i select  the char and the game goes  to the Loading Screen, it loads for a while then get stuck  without any answer as "You have Been Disconnect or something else" but just hold there, the loading  screen disappear and appear  the game screen with UI but without show off the character  only when i turn  down the gameserver so basicly i'm in a mind fuck situation, because i've  been years without dev with L2J Core and now i'm trying to go back with this stuff and dev my own Lindvior Project well ty for understand.

So i believe Protocol Version number have nothing to do with that. The problem is, that different version of Lineage II Client requires different packages too.

When official server is doing update, they are updating both Client and Server and sometimes they are changing Packages too.

 

It's possible to make interlude server that even High Five users can access. The big problem in it, is that for example High Five client requires sending Attribute Informations of each item and Interlude doesn't(and if high five client will not get attribute infos, it will most likely drop critical error).

[faim]

You can use wireshark for packet inspection: http://www.wireshark.org/

 

The rest of what you are talking about isn't related to L2J. 

[Thony]

Ty alot for answer. Anyway i've look here and i  found another way to "sniff whole packets"

Edited November 26, 2013 by Thony

[Thony]

Bump - Anyway i still need to know how workout the "core" serverpackets to change  the source protocol lindvior from max 531 to 559 if someone  know something "reply" :)

[vampir]

Protocol Version is hardcoded in client dll files, there is no easy way to change it

[Thony]

I know, indeed my question is if someone knows how to get this code from DLL, packets by unassembly/sniff  etc.. to add them into  Server's core and run it with a new protocol

[vampir]

Why protocol version matters to you? If you want multiple clients pass Protocol test, just edit ProtocolVersion.java class

 

If you really need just to change number sent to server, you can set hook to SendPacket function in client and replace Protocol that client is willing to sent. By this way, everybody using your system folder would have same protocol version.

Edited December 5, 2013 by vampir

[Thony]

Why protocol version matters to you? If you want multiple clients pass Protocol test, just edit ProtocolVersion.java class

 

If you really need just to change number sent to server, you can set hook to SendPacket function in client and replace Protocol that client is willing to sent. By this way, everybody using your system folder would have same protocol version.

My problem is that i want allow the project to run with all kind of Lindvior protocols from the 1st one till the currently one, i've tried change stuff at  "ProtocolVersion.java"  file etc.. already but always when i try log in for example with  558 Lindvior Protocol,  the client  goes fine  for Character Creation etc  but once i select  the char and the game goes  to the Loading Screen, it loads for a while then get stuck  without any answer as "You have Been Disconnect or something else" but just hold there, the loading  screen disappear and appear  the game screen with UI but without show off the character  only when i turn  down the gameserver so basicly i'm in a mind fuck situation, because i've  been years without dev with L2J Core and now i'm trying to go back with this stuff and dev my own Lindvior Project well ty for understand.

[Thony]

Hm i total understand now, thank you very much so the point is how sniff/obtain client's information to add into server's core? 

Do i have to get something  from Client's DLL ?? Thanks to be so patient ^^

Edited December 5, 2013 by Thony

[vampir]

Hm i total understand now, thank you very much so the point is how sniff/obtain client's information to add into server's core? 

Do i have to get something  from Client's DLL ?? Thanks to be so patient ^^

You can try to find a source code that works with latest version of lindvior and just compare your server>Client packets with that source.

Maybe you can also find a list of changed packages somewhere.

If those solutions will fail, find out which packages sent from server is causing client to be closed. Then just try search over the internet for it's modifications or try to play with it by yourself.

[Thony]

Well man, the problem is i didn't  find any source with latest lindvior, the max available right now is 531 that's why i  want  to know how to checkout the whole code inside client's  dll so i may dev my own code into server/clientpackets of core  and make it work ^^

 

ps: client doesn't get closed just keep stuck at loading screen which means i must add new packets to show off the character etc

Edited December 6, 2013 by Thony

[vampir]

Well man, the problem is i didn't  find any source with latest lindvior, the max available right now is 531 that's why i  want  to know how to checkout the whole code inside client's  dll so i may dev my own code into server/clientpackets of core  and make it work ^^

 

ps: client doesn't get closed just keep stuck at loading screen which means i must add new packets to show off the character etc

Source code of client is protected. I believe the only way to get the source, is to pay ncsoft or create it from 0

[Thony]

Yep indeed i want find a way to sniff packets  from client's dll  due to  these ones don't be available to the public