Tutorial

You have apk oldapk.apk, you want to rename its package from com.oldcompany.oldname to com.mycompany.myname.

1. Install:

• apktool - https://ibotpeaches.github.io/Apktool/install/
• signapk - sudo apt install signapk (https://manpages.ubuntu.com/manpages/bionic/man1/signapk.1.html)
• ruplacer - https://github.com/dmerejkowsky/ruplacer (sed on all files in directory)
• clone this repo: https://github.com/techexpertize/SignApk

2. Unzip apk: apktool d oldapk.apk

3. Edit oldapk/apktool.yml:

-  renameManifestPackage: null
+  renameManifestPackage: com.mycompany.myname

4. Replace old names to new:

ruplacer "Lcom/oldcompany/oldname" "Lcom/mycompany/myname"
ruplacer "com\.oldcompany\.oldname" "com.mycompany.myname"

5. Rename folders smali/com/oldcompany/oldname to smali/com/mycompany/myname. You can check folders that has old name by using find | grep oldcompany and find | grep oldname.

6. (Optional) Change app name: ruplacer "Old name" "New name"

7. Compress apk: apktool b oldapk -o newapk.apk

8. Sign apk: signapk SignApk/certificate.pem SignApk/key.pk8 newapk.apk newapksigned.apk

See also

• https://forum.xda-developers.com/t/how-to-guide-mod-change-package-names-of-apks.2760965/