Inject JavaScript to explore native apps on Windows, Mac, Linux and iOS.


Your own scripts get injected into black box processes to execute custom debugging logic. Hook any function, spy on crypto APIs or trace private application code, no source code needed!


Stealthy code tracing without relying on software or hardware breakpoints. Think DTrace in user-space, based on dynamic recompilation, like DynamoRIO and PIN .

Quick-start Instructions

      ~ $ sudo easy_install frida

      ~ $ frida-trace -i 'recv*' Skype

      recvfrom: Auto-generated handler: …/recvfrom.js

      Started tracing 21 functions.

      1442 ms recvfrom()

      # Live-edit recvfrom.js and watch the magic!

      5374 ms recvfrom(socket=67, buffer=0x252a618, length=65536, flags=0, address=0xb0420bd8, address_len=16)