Fateinjector Guide

1. Executive Summary FateInjector is a post-compilation, runtime instrumentation framework that allows engineers, security researchers, and game developers to inject "fate-altering events" into a running process. Unlike traditional fuzzers (random input mutation) or debuggers (breakpoint/halt), FateInjector operates on the principle of deterministic state corruption —it rewrites specific variables, return values, or code paths to force the target into a desired (or undesired) alternate reality.

// Intercept open() system call wrapper int open(const char *path, int flags, mode_t mode) int (*original_open)(const char*, int, mode_t) = dlsym(RTLD_NEXT, "open"); if (FateInjector_ShouldBlock(path)) errno = EACCES; return -1; return original_open(path, flags, mode); FateInjector

FateInjector can generate Frida Gadget scripts on the fly: runtime instrumentation framework that allows engineers