Frida is a cross-platform reverse-engineering tool.
Frida is Greasemonkey for native apps, or, put in more technical terms, it’s a dynamic code instrumentation toolkit. It lets you inject snippets of JavaScript into native apps on Windows, Mac, Linux, iOS and Android. Frida also provides you with some simple tools built on top of the Frida API. These can be used as-is, tweaked to your needs, or serve as examples of how to use the API.
Frida 5.0 has been announced. (On Twitter, their blog still shows 4.2 as the last release, from earlier in the Summer.)
https://github.com/frida/frida
Firmware Security 