Make an android app debugabble and reinstall

make_an_android_app_debugabble_and_reinstall.sh

#!/bin/sh
# Make an android app debugabble and reinstall

set -ex

DNAME="CN=Ross Patterson, OU=me, O=rpatterson.net, L=San Francisco, ST=CA, C=US"
PACKAGE_RE='^package:(/data/app/([^-]+)-.+==/(.+.apk))=.+'
MANIFEST_RE='(<application [^>]+)>'

export PATH=$HOME/Android/Sdk/platform-tools:$PATH

app="$1"
storepasswd=$(pwgen 16 1)

package_listing=$(adb shell pm list packages -f -3 | grep "$app")
apk_path=$(echo "$package_listing" | sed -En "s|$PACKAGE_RE|\1|p")
package_name=$(echo "$package_listing" | sed -En "s|$PACKAGE_RE|\2|p")
apk_basename=$(echo "$package_listing" | sed -En "s|$PACKAGE_RE|\3|p")

adb pull "$apk_path" "$package_name.apk"
apktool d -f -o "$package_name" "$package_name.apk"

mv "$package_name/AndroidManifest.xml" "$package_name/AndroidManifest.bak.xml"
sed -E "s|$MANIFEST_RE|\1 android:debuggable=\"true\">|" \
    "$package_name/AndroidManifest.bak.xml" > "$package_name/AndroidManifest.xml"

apktool b -o "$package_name.apk" "$package_name"

keytool -genkey -v \
        -keystore "$package_name.keystore" -storepass "$storepasswd" \
        -alias "${app}_debuggable" -keyalg RSA -keysize 2048 -validity 10000 \
        -dname "$DNAME"
jarsigner -verbose -sigalg SHA1withRSA -digestalg SHA1 \
          -keystore "$package_name.keystore" -storepass "$storepasswd" \
          "$package_name.apk" "${app}_debuggable"

adb shell cmd package uninstall -k "$package_name"
adb install -r "$package_name.apk"