Question on dumping L3 CDM

[GirlsGill]

Hello,

I hope you are all doing well. I have a question to ask.

First of all, I'm using this GitHub repository URL: https://github.com/Diazole/dumper. I have followed the steps mentioned there:

Enable USB debugging on the Android device and connect it to the PC.
Start frida-server on the Android device.
Execute dump_keys.py on the PC (hook started).
Start streaming some DRM-protected content on the Android device, e.g., Bitmovin.
However, there is some confusion here. The Android device version I'm using is 13, and in the DRM info app, I saw that the CDM version is 16.1.0. However, in dump_keys.py, it uses the default CDM version, which is 14.0.0 or something. Additionally, it uses two default Widevine (*.so) modules. But on my device, when I go to vendor/lib64, I find these two modules: 'libwvhidl.so' and 'libwvdrmengine.so'. Consequently, I ran the following command:

-------------------------------------------------------------------------------------------------------------------------------
python dump_keys.py --cdm-version '16.1.0' --module-name 'libwvhidl.so' --module-name 'libwvdrmengine.so'
This resulted in the following error message:

F:\dumper-main>python dump_keys.py --cdm-version '16.1.0' --module-name 'libwvhidl.so' --module-name 'libwvdrmengine.so'

2023-08-18 12:06:26 PM - main - 32 - INFO - Connected to Android Emulator 5554
2023-08-18 12:06:26 PM - main - 33 - INFO - Scanning all processes
Traceback (most recent call last):
File "F:\dumper-main\dump_keys.py", line 43, in <module>
main()
File "F:\dumper-main\dump_keys.py", line 37, in main
for library in device.find_widevine_process(process.name):
^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
File "F:\dumper-main\Helpers\Device.py", line 72, in find_widevine_process
script = process.create_script(self.frida_script)
^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
File "C:\Users\kunal\AppData\Local\Programs\Python\Pyth on311\Lib\site-packages\frida\core.py", line 86, in wrapper
return f(*args, **kwargs)
^^^^^^^^^^^^^^^^^^
File "C:\Users\kunal\AppData\Local\Programs\Python\Pyth on311\Lib\site-packages\frida\core.py", line 628, in create_script
return Script(self._impl.create_script(source, **kwargs)) # type: ignore
^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
frida.InvalidArgumentError: script(line 2): SyntaxError: expecting ';'
My questions are: Do I need to pass the function name as well? If yes, how do I get that? Additionally, how do I find the oemcrypto version?

[A_n_g_e_l_a]

Have you seen the major threads on L3 dumping? Fragmentation helps no-one

[GirlsGill]

doesn't help

[A_n_g_e_l_a]

Not meant to help. I was politely balling you out but apparently you didn't realize.

Ask your question in the proper place. If anyone and every one who needed help with dumping started a new thread. Then all these little answers would soon be buried in the mass of posts to to this forum. Then any users seeking enlightenment on L3 dumping in the future would face an impossible morass of single point questions and single point answers.

If you ask in one or other of the two sticky threads that deal with L3 dumping, firstly people may be more inclined to help knowing what they say will reach a wider audience, and, secondly. the answers will help future reader's of those threads.

It is not only about you!

[GirlsGill]

I completely understand but i have gone through couple of thread but none of them helped me so i posted a new thread

[A_n_g_e_l_a]

Then point me to those threads and I might answer there.

[ridibunda]

"Dumping L3" is becoming useless as the streamers started to protect 1080p contents only decryptable via Chrome-CDMs.

Instead of rooting your device, try to find such CDMs.