On macOS, one popular technique to inject code into other applications is leveraging the DYLD_INSERT_LIBRARIES environment variable, which I wrote about in 2019 DYLD_INSERT_LIBRARIES DYLIB injection in macOS / OSX. This variable can store a colon-separated list of dynamic libraries to load before the ones specified in the target process. Several limitations apply to when this injection technique can be used and when it cannot, which I also discussed. I revisited this topic, not only because t...
