Game Hacking by Nick Cano

Author:Nick Cano
Language: eng
Format: epub, mobi
Publisher: No Starch Press, Inc.
Published: 2016-03-23T16:00:00+00:00

Hijacking a Game’s Main Thread to Execute Code Caves

In some cases, injected code caves need to be in sync with the main thread of the game process. Solving this problem can be very tricky because it means that you must control the existing threads in an external process.

You could simply suspend the main thread until the code cave finishes executing, which might work, but that would prove very slow. The overhead required to wait for a code cave and then resume a thread is pretty heavy. A faster alternative is to force the thread to execute the code for you, a process called thread hijacking.

NOTE

Open the main-codeInjection.cpp file in this book’s source code files to follow along with building this thread-hijacking example, which is a simplified version of injectCodeUsingThreadHijacking().

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