The app freezes on an Emulator

arch: x64
device: Emulator from Android Studio
Tested API versions: 28 and 31

command: frida -U -f com.android.contacts -l _agent.js --no-pause

code:

const Interruptor = require('./android-x64-strace.min.js').target.LinuxX64();

Interruptor.newAgentTracer({
}).start();

The script hooks threads and prints some syscalls but the app itself freezes, seems like the main thread never resumes or something like that.

[FrenchYeti]

1/ Using Interruptor without configuration is not recommended :

• It heavily slows down the app
• It can fails to follow some threads
• Arguments parsing for x64 is not complete

2/ Interruptor is not yet able to follow fork/clone

3/ The aim of Interruptor is to trigger/stop syscall tracing from hook, else stracedoes the job

Interruptor is more designed to hook some syscall when a specific library is loaded or when another hook is trigged