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I know there are various programs that sniff packets like WireShark, but I'm pretty sure you can only view the data. I want to know if it's possible to edit incoming packets. I'm not sure if packets are the right term. I just want to edit incoming data that is recieved through the internet and who's destination is a specific application. Let's say I am playing an online game. As it loads my computer, it is recieving information like "This person has 10 coins in their money pouch". Obviously not exactly like that but you get the point. I would like to be able to change the data so it is say 100 instead of 10. I know something like this would be possible if you were to do this: Imagine my computer is connected to the internet with an ethernet cord. There is a device attached to the ethernet cord which recieves the data and changes it and then lets it continue to my computer. I would just like to know if this is possible, and how it could be accomplished.

Thanks!

43.52.4D.
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1 Answers1

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The way I do it, is one of 2 ways: 1.

  1. If your application supports it set up a HTTP Proxy on your machine and you could software like burp / Fiddler to mess with the data

  2. If not (the protocol is not HTTP) you could use either one of 2 options i'v tried [Both based on Hooking the API calls from the application to the OS]:

    • EchoMirage software that allow messing around with the packets
    • [Bit more advanced: ] There is a debugger named OllyDbg which has a plugin named Universal Hooker; it enables to hook any window API function and execute a python script on demend. the uHooker contains examples for how to hook WSASend and WSARecive (which are the API functions used in windows sockets).
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