mach_inject_bundle
mach_inject_bundle is a low-level injection framework for macOS developed by Rentzsch that enables runtime code injection into running processes. It is used by debugging tools, reverse-engineering utilities, and instrumentation libraries that need to load code into arbitrary applications. The framework sits at the intersection of dynamic analysis, code inspection, and tool development, allowing developers to observe and modify program behavior at runtime.
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1 suggestionmach_inject_bundle is an embedded framework, not a standalone application — it ships as part of the host product or application suite that uses it for code injection and runtime instrumentation. The framework is not updated separately. If you are using a tool or application that depends on mach_inject_bundle (common examples include reverse-engineering debuggers, performance profilers, or testing frameworks), update the parent application through its normal update mechanism — that will automatically update the embedded framework to its latest version. Without knowing which host product you are using, contact that vendor's support to confirm they have released an Apple Silicon-native build that includes native versions of their embedded frameworks. If the host product has not yet announced native Apple Silicon support, note that mach_inject_bundle will stop working when Apple removes Rosetta 2 in macOS 28 (September 2028).
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