./emulator.exe -avd phone -writable-system
export Certificate to File
certificate_name=$(openssl x509 -inform DER -subject_hash_old -in burp_certificate | head -1)
mv burp_certificate $certificate_name.0
adb push $certificate_name.0 /sdcard
adb root adb shell
mount -o rw,remount / # (or /system) mv CERTIFICATE_NAME /system/etc/security/cacerts chmod 0644 /system/etc/security/cacerts/CERTIFICATE_NAME