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--- docu:csheet:dtproc:backups:android_apps_backup [2020/12/17 22:43]
admin
+++ docu:csheet:dtproc:backups:android_apps_backup [2021/08/31 13:23] (current)
admin
@@ Line 2: / Line 2: @@
 \\
-Create the backup (whole)
+Create the backup (**whole**)
 <code bash>
 adb backup -apk -noshared -all -system -f ./my-backup.ab
@@ Line 8: / Line 8: @@
 \\
-Create a single Package backup
+Create a **Single-Package** backup
 <code bash>
 # list the package names
@@ Line 16: / Line 16: @@
 adb backup -f yourbackupfile.ab -noapk com.whatsapp
 </code>
+\\
+**Extract** the files/directories of the backup for **query or modification**
+<code bash>
+# 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
+</code>
+\\
+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/
 \\

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