With LD_PRELOAD, you can override functions in shared libraries before any program even starts. Want to intercept malloc, block file access, or spoof system calls without touching source code? This is how you do it. It’s an advanced but incredibly powerful debugging and hacking tool. One that developers and exploit authors alike keep close. You can use it to mock dependencies during testing, inject logging for hard-to-trace bugs, or even subvert DRM and monitoring software. It’s not just a trick, it’s a backdoor into the behavior of nearly any dynamic binary.

#LinuxTricks #LD_PRELOAD #SharedLibraryHacks #DebuggingTools