android_ca_cert_updater.sh

#!/bin/sh

# This is a script to update the CA certs on your Android smartphone.
# Tested on Android 6.

# 1. Have a look at https://azimut.github.io/blog/adbfun.html
# 2. download the CA certs (pem) files to data/local/tmp/
# 3. Fill in the "files" variable below with the needed certs
#      e.g. 'grep -r "Not Before: " | grep "201" | grep -oE "[0-9a-f]+\.pem'
# 4. Copy this script to your phone:
#      adb push android_ca_cert_updater.sh /data/local/tmp/
# 5. Clicky click on OK

files=$(cat <<EOF
ffa7f1eb
fd08c599
.......
EOF
)


while read -r fn; do
	if [ -z "$fn" ]; then
		continue
	fi

	echo "$fn"
	am start -n com.android.certinstaller/.CertInstallerMain -a android.intent.action.VIEW -t application/x-x509-ca-cert -d "file:///data/local/tmp/$fn.pem"
	sleep 0.2
	input text "$fn"

	sleep 1
	# Tap OK here
done <<< "$files"