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gtxaspec / wz_mini_hacks

wz camera mods... make your camera better.
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Question: How to monitor SDK call made by iCamera? #485

Closed etiennedub closed 1 year ago

etiennedub commented 1 year ago

Hi, I'm trying to reverse some call made by iCamera to liblocalsdk.so.

My end goal would be to support at least a new command "waitForAudio" trigger on audio detection. The wyze app support this but I'm not sure which call to hook into. For that, I was thinking about monitoring calls made to liblocalsdk.so and poke around the app.

Do you have any way to monitor all library call made to liblocalsdk.so? So far, I tried to hook iCamera with frida-gadget but their static mipsel build doesn't seem to work on my wyze camera. I haven't try to build it personally. I also try to build ltrace with the buildroot toolchain from mnakada/atomcam_tools, but it's building with glib dependency instead of uclibc.

Any idea how to achieve that, or do you use another toolchain to build binary for this repo?

gtxaspec commented 1 year ago

ude ghidra or ida to decompile the library, then you can use LD_PRELOAD on the iCamera app to load a custom .so as we do in libcallback.

https://github.com/gtxaspec/wz_mini_sources/tree/master/libcallback https://github.com/gtxaspec/wz_mini_hacks/blob/master/SD_ROOT/wz_mini/usr/bin/iCamera

gtxaspec commented 1 year ago

Converting to discussion for visibility