NoBIGTech Wiki Técnico

Create the backup (whole)

adb backup -apk -noshared -all -system -f ./my-backup.ab

Create a Single-Package backup

# list the package names
adb shell pm list packages
 
# Create a WhatsApp backup (for example), where PACKAGE-NAME is "com.whatsapp"
adb backup -f yourbackupfile.ab -noapk com.whatsapp

Extract the files/directories of the backup for query or modification

# strip the first 24 bytes (header) and decompress the raw zlib data with "openssl"
dd if=yourbackupfile.ab ibs=24 skip=1 | openssl zlib -d > yourbackupfile.tar
# in case you don't have zlib support on your openssl, you can do this:
dd if=yourbackupfile.ab bs=1 skip=24 | python3 -c 'import zlib,sys;sys.stdout.write(zlib.decompress(sys.stdin.read()))' > yourbackupfile.tar
 
# extract the archive
tar xvf yourbackupfile.tar

More informatión of how to modify/repack and restore an Android ADB Backup on: https://stackpointer.io/mobile/android-adb-backup-extract-restore-repack/372/

Restore the backup (any)

adb restore ./my-backup.ab