[1.1] Upload frida-server to the emulator or device and run using nohup

Upload frida-server

First, let's test to make sure that we have working connectivity over ADB (Android Debug Bridge).
This lab is also covered off in the Environment Setup video walkthrough.
Open a commandline and type adb devices
If you see any other devices listed, disconnect or power them off.
In order for frida to work, we need it's companion frida-server, to be running on the device. You can download it from the frida releases page on Github - make sure you get the one ending in "android-x86".
Push it to /data/local/tmp with adb push frida-server-12.8.20-android-x86 /data/local/tmp
Obtain root with adb root, then connect to your device with adb shell. Navigate to the /data/local/tmp directory with cd /data/local/tmp .
At this point I prefer to rename frida-server to something a little less annoying to type: mv frida-server-12.8.20-android-x86 frida-server
Make the server executable with chmod 777 frida-server

Run frida-server persistently using nohup

Start the server with nohup ./frida-server &
The reason we are using nohup is to keep the process running even if we close our ADB terminal. You can absolutely just run ./frida-server but then you must be mindful not to close the window.
To recap: