[legal] Need help with Packet Sniffer in Delphi

[Spielie96 0]

Hey guys,

 

I am currently working on a packet sniffer for the MMORPG Last Chaos. With the Packet Sniffer I only want to intercept incoming packets and get access to them. The script is already available so far and was taken over by a packet editor, whereby the pointer and some smaller functions was adjusted. Unfortunately, the game client crashes after a short time due to an exception. I do not get the problem properly debugged and I don't know what I can do now.
Does anyone have experience in Delphi and some time to take a look at it with me? I also like to pay something for support through PayPal as a thank you.

It isn't illegal, as I have received an order from the company to test the safety of the game. Unfortunately, I came across the above mentioned difficulties. I would need the script or the revision of my scripts today. So of course I would pay a little more. What would your price be?

 

Thank you in advance!

 

//Edit: The pointer is correct and there are also incoming packets logged in the gui.

Edited December 12, 2019 by Spielie96

[aehimself 396]

Try not to modify the packets at all. Some games have cheat detection and disguise the "I caught you, cheater" message with a simple crash.

[Fr0sT.Brutal 900]

Well, I've heard of really powerful sniffer solutions available (WireShark is #1) and they probably allow user scripting. Besides that, if you need to modify traffic as well, maybe it's easier to write a proxy.

[Spielie96 0]

8 minutes ago, aehimself said:

Try not to modify the packets at all. Some games have cheat detection and disguise the "I caught you, cheater" message with a simple crash.

I already bypassed the Anti-Cheat protection and the script is running.

 

some more information: i know which function stops the scripts work. After I commented out the calling of the old, moved function of the .dll of the game, it was working fine, but the packets should still reach the old one...

I think i made a misstake by moving the function in the memory and calling the old one. I am not an expert in the field and the employee I had hired as an expert in the field is unfortunately ill and unreachable. I would be very grateful if someone could help me and look at the script for a fee.

 

10 minutes ago, Fr0sT.Brutal said:

Well, I've heard of really powerful sniffer solutions available (WireShark is #1) and they probably allow user scripting. Besides that, if you need to modify traffic as well, maybe it's easier to write a proxy.

The packets are unfortunately encrypted and therefore not visible with Wireshark. The encryption is very hard and i can't decrypt it from the outside. So I have to solve this by injecting.

[Sherlock 663]

Guys, the german DelphiPraxis has a no-cheat-tool-policy. I'm pretty sure that applies to the english version here as well. So...sniffing is almost OK, modifying must be discussed elsewhere, please.

[Der schöne Günther 316]

I'm not able to find anything in that regard over at delphipraxis.net, and the only thing I can find here is

Quote

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• Everything related to software-piracy for obvious reasons.
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[Guest]

@Spielie96, there is an inbox function in this forum. Write me a note/post/mail here and perhaps we could have a "skype session" or similar.

[Daniel 417]

@Spielie96:

You are not just reading the data, you have already modified the client of your game by changing one of the DLLs. To quote your own words: You have already bypassed the Anti-Cheat protection. Sniffing and analysing data sent to your computer is fine, but you are taking actions that are clearly against the will of the publisher - otherwise you wouldn't have to bypass any protection. So you create advantages over the other participants of this MMORPG. And this is kind of cheating.

I will close this thread.