Help Client Packet read

[Nightw0lf]

Hello,

 

I am looking for a way to capture and translate somehow the client packets like int, string, float... and the sequence (or at least thats what i think i need)

I would like any kind of way or any information on how to achieve that, maybe what programs could help me or what direction should i look into

[Salty Mike]

  On 10/24/2023 at 2:53 PM, Nightw0lf said:

Hello,

 

I am looking for a way to capture and translate somehow the client packets like int, string, float... and the sequence (or at least thats what i think i need)

I would like any kind of way or any information on how to achieve that, maybe what programs could help me or what direction should i look into

Expand  

I'm fairly certain I can help. But which protocol version are we talking about?

Edited October 24, 2023 by Bru7aLMike

[Nightw0lf]

  On 10/24/2023 at 3:12 PM, Bru7aLMike said:

I'm fairly certain I can help. But which protocol version are we talking about?

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560

[Salty Mike]

  On 10/24/2023 at 3:15 PM, Nightw0lf said:

560

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If your source is java-based, then it is quite easy. Each source comes with a ReceivablePacket.java whose read() function is being overwritten by its sub-classes, one of which is something related to Game Client. This class, let's call it GameClientPacket.java, also has sub-classes, the actual client->server packets, which extend its secondary read method.

From here, you have 2 options.

1 - Enable the Net Stats(Chat) feature in the client to see the name of the sendable/receivable packets (Client <-> Server, where C_ = sent by the client and S_ = sent by the server).
2 - Rely on the source's exception-handler, which will show the ID of the packet, if it is unknown, or the IDE's (IntelliJ/Eclipse) debug feature to figure out which packet is being sent.

Then, you also have multiple options, with the easiest one being to search for the packet structure in the client itself, or brute-force the incoming data from the server-side by utilising the aforementioned IDE debug feature with breakpoints.

Edited October 24, 2023 by Bru7aLMike
typo

[Nightw0lf]

  On 10/24/2023 at 3:42 PM, Bru7aLMike said:

If your source is java-based, then it is quite easy. Each source comes with a ReceivablePacket.java whose read() function is being overwritten by its sub-classes, one of which is something related to Game Client. This class, let's call it GameClientPacket.java, also has sub-classes, the actual client->server packets, which extend its secondary read method.

From here, you have 2 options.

1 - Enable the Net Stats(Chat) feature in the client to see the name of the incoming packet.
2 - Rely on the source's exception-handler, which will show the ID of the packet, if it is unknown, or the IDE's (IntelliJ/Eclipse) debug feature to figure out which packet is being sent.

Then, you also have multiple options, with the easiest one being to search for the packet structure in the client itself, or brute-force the incoming data from the server-side by utilising the aforementioned IDE debug feature with breakpoints.

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Thank you i will give it a try it is java and intellij my goal is knowledge and fun, thanks for beign so helpful

[wongerlt]

l2phx not working?

[Nightw0lf]

  On 10/25/2023 at 7:42 PM, wongerlt said:

l2phx not working?

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do you have it? i tried to find but i dont even know how it works

[wongerlt]

  On 10/25/2023 at 7:52 PM, Nightw0lf said:

do you have it? i tried to find but i dont even know how it works

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https://mega.nz/file/Gc13lC6T#2aZj_JYa-zyvjvRD07uCpED0fQ_ZGZvXmL6sD1ao2n4

good thing to watch/manipulate server/client packets

Edited October 25, 2023 by wongerlt

[Nightw0lf]

  On 10/25/2023 at 7:56 PM, wongerlt said:

https://mega.nz/file/Gc13lC6T#2aZj_JYa-zyvjvRD07uCpED0fQ_ZGZvXmL6sD1ao2n4

good thing to watch/manipulate server/client packets

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how it works cause i feel dumb

[wongerlt]

  On 10/25/2023 at 8:02 PM, Nightw0lf said:

how it works cause i feel dumb

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try search in youtube, there many videos about how to use it.
Easy.

it not work on servers with protections like smartguard/aa

Edited October 25, 2023 by wongerlt

[Nightw0lf]

  On 10/25/2023 at 8:05 PM, wongerlt said:

try search in youtube, there many videos about how to use it.
Easy.

it not work on servers with protections like smartguard/aa

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i try to use it on my local host but no luck so ever, i also looked for videos still bad luck i guess nothing is coming up

[wongerlt]

  On 10/25/2023 at 8:08 PM, Nightw0lf said:

i try to use it on my local host but no luck so ever, i also looked for videos still bad luck i guess nothing is coming up

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check phx settings dll path

[LoVe+]

this is ultimate. thank you guys for shares.