feat: Change package name of built APK

[NatoBoram]

Type

Functionality

Issue

• I want to install Reddit alongside Reddit ReVanced, Twitter alongside Twitter ReVanced, etc
• The Google Play Store can override packages installed with a different signature during an update, removing ReVanced
• To update ReVanced, I have to download the original apps, erasing ReVanced. Reinstalling ReVanced would remove the original apps, losing all their user data.

Feature

Add patches that would change ReVanced's built APK's package names so that they don't conflict with the original app

Motivation

It's very hard to decompile the app and recompile it with the modified package name. I managed to do it with base.apk but I've got no luck with the .apks.

Additional context

These are the steps I had the time to finish before raising this issue. There's a good 12h of fiddling around to learn the different tools and stuff.

#!/bin/sh

update_project() {
	local NAME=$1

	if [ ! -d $NAME ]; then
		git clone "https://github.com/revanced/$NAME.git"
	else
		git -C $NAME pull --autostash --rebase
	fi

	gradle build --project-dir $NAME
}

update_project revanced-cli &
update_project revanced-integrations &
update_project revanced-patcher &
update_project revanced-patches &
update_project Apktool &
wait

ls $HOME/Android/Sdk/build-tools \
	Apktool/brut.apktool/apktool-cli/build/libs \
	revanced-cli/build/libs \
	revanced-patches/build/libs

alias apksigner="$HOME/Android/Sdk/build-tools/31.0.0/apksigner"
alias apktool='java -jar Apktool/brut.apktool/apktool-cli/build/libs/apktool-cli-all.jar'
alias zipalign="$HOME/Android/Sdk/build-tools/31.0.0/zipalign"

if [ ! -f "revanced.keystore" ]; then
	keytool -genkey -destkeystore revanced.keystore -keyalg RSA -sigalg SHA512withRSA -storepass ReVanced
fi

build_revanced() {
	local APP=$1

	java -jar revanced-cli/build/libs/revanced-cli-2.7.1-all.jar \
		--apk="$APP.apk" \
		--bundles=revanced-patches/build/libs/revanced-patches-2.25.3.jar \
		--out="$APP-revanced-root.apk" \
		--temp-dir="revanced-cache-$APP"

	rm "$APP-revanced-root.apk"
	apktool decode --force --output "revanced-cache-$APP/apktool" --no-src "revanced-cache-$APP/$APP-revanced-root_signed.apk"

	# Change package name and resolve conflicts
	sed -i 's/package="com.reddit.frontpage"/package="com.reddit.revanced"/g' "revanced-cache-$APP/apktool/AndroidManifest.xml"
	sed -i 's/android:authorities="com.reddit.frontpage/android:authorities="com.reddit.revanced/g' "revanced-cache-$APP/apktool/AndroidManifest.xml"
	sed -i 's/android:sharedUserId="com.reddit.reddit"/android:sharedUserId="com.reddit.revanced"/g' "revanced-cache-$APP/apktool/AndroidManifest.xml"
	sed -i 's/app_name">Reddit</app_name">Reddit ReVanced</g' "revanced-cache-$APP/apktool/res/values/strings.xml"
	sed -i 's/package="com.twitter.android"/package="com.twitter.revanced"/g' "revanced-cache-$APP/apktool/AndroidManifest.xml"

	# Build, align, sign, copy, install
	apktool build "revanced-cache-$APP/apktool" --output "revanced-cache-$APP/$APP-revanced-nonroot_raw.apk"
	zipalign -p -f -v 4 "revanced-cache-$APP/$APP-revanced-nonroot_raw.apk" "revanced-cache-$APP/$APP-revanced-nonroot_aligned.apk"
	apksigner sign \
		--in "revanced-cache-$APP/$APP-revanced-nonroot_aligned.apk" \
		--ks revanced.keystore \
		--ks-pass pass:ReVanced \
		--out "revanced-cache-$APP/$APP-revanced-nonroot_signed.apk"
	cp "revanced-cache-$APP/$APP-revanced-nonroot_signed.apk" "$APP-revanced.apk"
	adb install "$APP-revanced.apk"
}

build_revanced reddit &
build_revanced twitter &
wait

[TheJeterLP]

This will be achieved by writing a patch which simply changes the packagename. We will look into this the upcoming days

[lalishansh]

Currently revanced patches change the name of package by appending ReVanced at the end, any way to not apply package name/icon change (I'd like to keep original package name)

[NatoBoram]

@lalishansh

• https://github.com/revanced/revanced-documentation/wiki/Using-the-ReVanced-CLI-and-installing-ReVanced
• https://github.com/revanced/revanced-patches#-comgoogleandroidyoutube