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Client Packet read

Nightw0lf

Asked by Nightw0lf,

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Nightw0lf Mentor

Nightw0lf

Posted
Posted

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

12 answers to this question

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Salty Mike Community Regular

Salty Mike

Posted
Posted (edited)
19 minutes ago, 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


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

Edited by Bru7aLMike
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Salty Mike Community Regular

Salty Mike

Posted
Posted (edited)
35 minutes ago, Nightw0lf said:

560


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 by Bru7aLMike
typo
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Nightw0lf Mentor

Nightw0lf

Posted
  • Author
Posted
9 minutes ago, 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.

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

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wongerlt Community Regular

wongerlt

Posted
Posted (edited)
4 minutes ago, Nightw0lf said:

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

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

good thing to watch/manipulate server/client packets

Edited by wongerlt
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wongerlt Community Regular

wongerlt

Posted
Posted (edited)
3 minutes ago, Nightw0lf said:

how it works cause i feel dumb:pepe-hmmm:

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

it not work on servers with protections like smartguard/aa

Edited by wongerlt
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Nightw0lf Mentor

Nightw0lf

Posted
  • Author
Posted
1 minute ago, 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

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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wongerlt Community Regular

wongerlt

Posted
Posted
22 hours ago, 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

check phx settings dll path

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