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List contents of, unpack, and convert Android Backup files to TAR files and back, decrypt, encrypt, split them into by-app pieces, etc. Android Backup files are `backup.ab`, `*.ab`, `*.adb`, and similarly named files produced by `adb backup`, `bmgr`, and similar tools.

oxij.org/software/hoardy-adb/

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Table of Contents

(Click me to see it.)

What is hoardy-adb?

hoardy-adb is a tool that can help you to:

  • list contents of Android Backup files (backup.ab, *.ab and *.adb files produced by adb backup, bmgr, and similar tools),
  • strip encryption and/or compression from Android Backup files (so that you could re-compress them with something better for long-term storage),
  • (re-)encrypt and/or (re-)compress Android Backup files (to change encryption passphrase, or to compress with higher levels of compression compared to that Android OS uses by default),
  • convert Android Backup files into TAR files (which you can then unpack with standard tar),
  • convert TAR files into Android Backup files (though, see the documentation for hoardy-adb wrap below explaining why you should be careful about doing that),
  • split Android Backup files into smaller by-app backups (each of which you can then give to adb restore to restore that one app, or just file-level de-duplicate them between different backups),
  • merge those small by-app backups back into full-system backups like those produced by adb backup,
  • and other similar things.

In other words, hoardy-adb is a Swiss-army-knife-like utility for manipulating Android Backup files.

Basically, this is a simpler pure Python implementation (only requires setuptools and cryptography modules) of android-backup-extractor and the parts of android-backup-toolkit and android-backup-processor that I use myself.

hoardy-adb will run on Linux and all other POSIX-compatible operating systems Python supports. The author also expects it will work fine on Windows, even though it was not tested there (do report an Issue if it does not).

hoardy-adb was previously knows as abarms.

Why does hoardy-adb exists?

Read the parts highlighted in bold in the following subsection.

UNIX in 1970s had better system backup tools than current Android OS

Did you know that your Android OS device already has an awesome built-in full-system phone-to-PC backup and PC-to-phone restore tool that does not require root access? adb utility of Android Platform Tools has adb backup subcommand that, in principle, can do basically everything you could possibly want there.

Internally this is implemented via Android OS setuid root binary named bu --- which you can run manually via adb shell bu help --- that simply backs up every app on the device one by one and streams the resulting .ab file --- which is a wrapped PAX-formatted TAR file (see "EXTENDED DESCRIPTION" section in man 1 pax) --- to stdout. adb backup subcommand is just a simple wrapper around it.

But then Android Platform Tools bundle gives no tools to manipulate those backup files! So, if you make a full-system backup with adb backup, and then want to restore a single app out of 100+ you have installed on your device, you need third-party tools now. This is kind of embarrassing, to be honest. A tool to manipulate backup files should have been a standard utility in Android Platform Tools since Android version 0.1 or something. (Seriously, are you not embarrassed? I'm embarrassed for the state of humanity thinking about how the most popular OS on the planet gives no widely accessible local backup and restore tools on par with what every user of 1970s-era UNIX mainframe had out of the box. I'm not asking for automatic opportunistic incremental quantum-safely encrypted full-system replication to cooperative nearby devices in a local mesh-network here!)

Well, technically speaking, Android OS also has automatic scheduled non-interactive backup service bmgr --- which can be controlled via Android settings menu and adb shell bmgr help, that does per-app backups and restores. Internally, bmgr service also generates .ab files and then either uploads them to Google --- which is the default and the only option available through the settings menu --- or stores them locally under /data/data/com.android.localtransport/files/ --- which requires root to access. On old Android versions you could ask bmgr to make a backup to an SD card directly from the settings menu, but Google removed that functionality to force users to use Cloud-based backups.

So, basically, according to Google (and Samsung, which ship with their own bmgr-like service in parallel with bmgr), to restore to a previous state of an app, or to migrate between phones you now apparently have to upload all your data to their servers in plain-text for their convenient data-mining and selling of your data to interested third parties. Google even went as far as to hide adb backup subcommand from their official Android documentation: compare the old manual for adb with the current one, Control+F for "backup".

This resulted into every Android vendor now making their own vendor-specific phone-to-phone migration utilities, and a whole ecosystem of commercial apps that do what adb backup already does, but worse.

This also resulted in usefulness of adb backup itself being reduced because in Android version 6 Google made automatic daily file-based backups that get uploaded to Google the default when you attach your phone to your Google account. So, most apps started opting out of those backups for privacy and security reasons -- which also started opting them out of being included in adb backup output, since bmgr and bu share most of the infrastructure. Some of those apps now implement their own in-app backup buttons hidden away in the settings menu somewhere, but most do not.

Yes, this is stupid, see this discussion on StackOverflow. See also old Android developer docs that explained this fairly clearly here and here.

(You can also force an app to be included in adb backup by rebuilding its APK to enable android:allowBackup attribute in the manifest and installing the result manually, see this for more info. But this will only work for newly installed apps as you will have to re-sign the resulting APK with your own private key and Android forbids app updates that change the signing key.)

But, hopefully, eventually, some alternative firmware developer will fix the above bug and allow adb backup to backup all apps regardless of android:allowBackup manifest setting, as it should.

Still, adb backup works fine for a lot of apps and, hopefully, will eventually get back to working as well as it did before Android version 6 in the future. Meanwhile, android-backup-toolkit allows you to split full-system dumps produced by adb backup into per-app backups that can then be restored with adb restore.

The problem is that, while I'm thankful that android-backup-toolkit exists, I find it really annoying to use: it is a bundle of pre-compiled Java apps, binaries, and shell scripts that manages to work somehow, but modifying anything there is basically impossible as building all of those things from sources is an adventure I failed to complete, and then you need to install the gigantic Java VM and libraries to run it all.

So, as it currently stands, to have per-app backups of your Android device you have to either:

  • root your device;
  • give up your privacy by uploading your backups to other people's computers (aka "the cloud"); or
  • repack all you APKs with android:allowBackup = true and either run older Android firmware that can do backup to an SD card or run adb backup from your PC, and then extract per-app backups from its output with third-party tools like android-backup-toolkit (yes, this is not ideal, but it works, and does not need root).

So, one day I was looking at all of this. I couldn't root or change the firmware on a phone I wanted to keep backed up, but I could follow the last option and get most of what I wanted with almost no effort. Except figuring out how to run android-backup-toolkit to do the very last step of this took me quite a while. And so I thought, "Hmm, this seems overly complicated, something as simple as splitting and merging TAR files with some additional headers should be doable with a simple Python program." So I made one.

It turned out to be a bit less simple than I though it would be, mostly because Python's tarfile module was not designed for this, so I had to make my own, and PAX-formatted TAR files are kind of ugly to parse, but it works now, so, eh.

Hopefully, hoardy-adb existing will inspire more app and alternative firmware developers to support adb backup properly and so personal computing devices of late 2020s will finally reach feature parity with 1970s-era Tape ARchiving (TAR) backup technology. (You can backup any UNIX box to an external HDD with tar -cvvf /media/external/backup.tar --one-file-system /. Yes, it will actually work.)

Quickstart

Pre-installation

  • Install Python 3:

    • On a Windows system: Download Python installer from the official website, run it, set Add python.exe to PATH checkbox, then Install (the default options are fine).
    • On a conventional POSIX system like most GNU/Linux distros and MacOS X: Install python3 via your package manager. Realistically, it probably is installed already.

  • Install Android Platform Tools:

Installation

  • On a Windows system:

    Open cmd.exe (press Windows+R, enter cmd.exe, press Enter), install this with

    python -m pip install hoardy-adb

    and run as

    python -m hoardy_adb --help

  • On a POSIX system or on a Windows system with Python's /Scripts added to PATH:

    Open a terminal/cmd.exe, install this with

    pip install hoardy-adb

    and run as

    hoardy-adb --help

  • Alternatively, for light development (without development tools, for those see nix-shell below):

    Open a terminal/cmd.exe, cd into this directory, then install with

    python -m pip install -e .
# or
pip install -e .

    and run as:

    python -m hoardy_adb --help
# or
hoardy-adb --help

  • Alternatively, on a system with Nix package manager

    nix-env -i -f ./default.nix
hoardy-adb --help

  • Alternatively, to replicate my development environment:

    nix-shell ./default.nix --arg developer true

Backup all apps from your Android device, then restore a single app, without root

Prepare your PC and phone

Before you make a full backup of your Android phone (or other device) you need to

  • enable "Developer Mode" and turn on "USB Debugging" in "Developer Options" (see Android Docs for instructions);

  • on Windows, you might need to run adb start-server in cmd, unless you configured it to start automatically;

  • on Linux, you usually need to run

    sudo adb kill-server
sudo adb start-server

    unless, you added special UDev rules for your phone.

Additionally, depending your device, you might also need to enable "Stay awake" in "Developer Options", otherwise long enough backups might get interrupted in the middle by your device going to sleep. Personally, I find having it enabled kind of annoying, so I recommend trying to do everything below with it disabled first, and enable it only if your backups get truncated.

Do a full backup

To do the backup, you need to

  • unlock your phone and connect it to your PC via a USB cable (in that order, otherwise USB Debugging will be disabled),

  • confirm that the PC is allowed to do USB Debugging in the popup on the phone, then

  • run

    adb backup -apk -obb -all -system -keyvalue

    on your PC (see below if that does not work),

  • unlock your phone again, and

  • press "Back up my data" button at the bottom of your screen.

Now you need to wait awhile for adb to finish. The result will be saved in backup.ab file.

If you want to backup to an explicitly named file, e.g. to note the date of the backup, run

adb backup -f backup_20240101.ab -apk -obb -all -system -keyvalue

If adb backup does not work, you can invoke bu via adb shell instead:

adb shell 'bu backup -apk -obb -all -system -keyvalue' > backup_20240101.ab

Split it into pieces

You can view contents of the backup via

hoardy-adb ls backup_20240101.ab

and split it into per-app backups via

hoardy-adb split backup_20240101.ab

which will produce a bunch of files named hoardy_adb_split_<filename>_<num>_<appname>.ab (e.g. hoardy_adb_split_backup_20240101_020_org.fdroid.fdroid.ab).

Restore a single app

A single per-app file can be fed back to adb restore to restore that singe app, e.g.

adb restore hoardy_adb_split_backup_20240101_020_org.fdroid.fdroid.ab

Or, alternatively, if adb restore does not work, invoke bu via adb shell:

adb shell 'bu restore' < hoardy_adb_split_backup_20240101_020_org.fdroid.fdroid.ab

Rebuild full backup from parts

You can also rebuild the original full-backup from parts via

hoardy-adb merge hoardy_adb_split_backup_20240101_*.ab backup_20240101.rebuilt.ab

to check that it produces exactly the same backup file

# strip encryption and compression from the original
hoardy-adb strip backup_20240101.ab backup_20240101.stripped.ab

# compare to the stipped original and the rebuilt file
diff backup_20240101.stripped.ab backup_20240101.rebuilt.ab || echo differ

Alternatives

If you want to backup APK files only

You should use one of these instead:

  • App Manager from F-Droid, which is an Android app with a nice UI: just select the apps you want, and press "Save APK";

  • BARIA from F-Droid, which is an Android app with much less nice UI: long-press all the apps you want to save, and then press the "Copy" button on the top of the screen to back them up;

  • simply adb shell pm path <pkg> and then adb pull <resulting_path>, which you can then restore via adb install;

  • getapk and restoreapks scripts from Adebar, which automate that for you.

If you have root access on your device

..., then instead of all of the above, you can backup all of your stuff with

  • Neo Backup on F-Droid and/or Syncthing-Fork on F-Droid;

    the latter of which is useful even without root access, though it won't be helping you backup your apps in that case;

  • simply adb pull and/or adb shell "su -c 'tar ...'" > backup.tar from the device;

  • or use root_appbackup.sh and root_apprestore.sh scripts from Adebar, which automate that for you;

  • running the following

    # check if bmgr is enabled
adb shell bmgr enabled

# list bmgr transports
adb shell bmgr list transports
# localtransport should be there, enable it
adb shell bmgr transport com.android.localtransport/.LocalTransport

# enable bmgr
adb shell bmgr enable true

# do a full backup now
adb shell bmgr fullbackup

    and then take per-app backup files from /data/data/com.android.localtransport/files/;

Competitors of hoardy-adb

android-backup-toolkit and friends:

Others:

  • A gist by AnatomicJC, among other useful adb hacks, shows how to do per-app backups with pure adb shell and adb backup calls.

    Though, I think hoardy-adb is a better solution for this, since invoking adb backup repeatedly means you'll have to unlock your phone and press "Back up my data" button on the screen repeatedly, adb backup followed by hoardy-adb split is much more convenient.

  • Adebar can also generate scripts performing the above-mentioned adb commands, but it will also intersperse them with adb shell input invocations, thus removing the need to manually press anything on the phone.

    This is a bit flaky, but it's only slightly less convenient than adb backup followed by hoardy-adb split.

Less powerful than hoardy-adb

  • abpy is a Python utility that can convert Android Backup files into TAR and back, so it's an alternative implementation of hoardy-adb unwrap and hoardy-adb wrap. I was unaware it existed when I made this, and I probably would have patched that instead if I were. After I became aware of it, hoardy-adb already had more features, so I was simply inspired by encryption passphrase checksum computation code there to implement it properly here (Android code has a bug causing checksums to be computed in a very idiosyncratic way that became a required behaviour when encryption support became the part of the file format), after which hoardy-adb gained its ability to produce encrypted .ab files as outputs.

  • ABX is a Python utility that can strip Android Backup headers from unencrypted backup files. So, basically, it's hoardy-adb unwrap without decryption support.

  • ab2tar of Adebar is a shell script (requires openssl and zlib-flate utils) doing hoardy-adb unwrap thing without decryption support.

Frequently Asked Questions

backup.ab produced by adb backup does not contain the app I want. Can hoardy-adb help me backup it somehow?

Probably not.

If you only want to backup the APKs, use one of the options noted above instead.

If you want to be able to backup both the APKs and app data states, including the current states of apps not included in backup.ab, you are probably out of luck.

As noted above, you can force an app to be included in backup.ab by setting android:allowBackup in its manifest, re-signing the APK with your own key, and then re-installing the app. But, you won't be able to install that re-signed APK while the original APK in installed. You will have to uninstall the app first. And you will have to repeat the re-signing on each app update.

But uninstalling the app will loose all that app's data state!

Yes, unfortunately. I completely agree that this is absolutely stupid. Blame Google for your suffering.

But I need to backup that app!

Check if the app in question has a custom backup function, usually somewhere in its settings. If it does, then

  • use it to make a backup,

  • check that the restore function actually works (you'd be surprised how often it does not):

    • the simple safe way to do this is to install the original APK to another phone and then use app's restore function to restore from your backup there;

    • or you can use Shelter from F-Droid to clone the app into your Work Profile and restore the backup there instead;

      this does not require a second phone, but it's a bit involved;

      see Shelter's help in its "Settings" menu for how to copy your backup files to your Work Profile, as this part will be rather annoying;

  • then uninstall the app and install your re-signed version.

You can now use adb backup for future backups.

If the app does not have a custom backup function, you can either

  • root your phone and then use the above "If you have root access on your device" instructions; or
  • ask your app's developers to either publish a version of the app with android:allowBackup set (signed with their key) or add a custom backup function to the app; or
  • loose your current data state by uninstalling the app, installing your re-signed APK, and thus, at the very least, stopping data loss from this point on.

Anything else nice and relevant on F-Droid?

A ton of stuff. Simply browse F-Droid's "System" category, or use search.

Also, you can switch to Droidify as your default F-Droid UI, which, IMHO, is nicer than the default one.

Meta

Changelog?

See CHANGELOG.md.

TODO?

See the bottom of CHANGELOG.md.

License

GPLv3+, some small library parts are MIT.

Contributing

Contributions are accepted both via GitHub issues and PRs, and via pure email. In the latter case I expect to see patches formatted with git-format-patch.

If you want to perform a major change and you want it to be accepted upstream here, you should probably write me an email or open an issue on GitHub first.

Usage

hoardy-adb

A handy Swiss-army-knife-like utility for manipulating Android Backup files (backup.ab, *.ab, *.adb) produced by adb backup, bmgr, and similar tools.

Android Backup file consists of a metadata header followed by a PAX-formatted TAR file (optionally) compressed with zlib (the only compressing Android Backup file format supports) and then (optionally) encrypted with AES-256 (the only encryption Android Backup file format supports).

Below, all input decryption options apply to all subcommands taking Android Backup files as input(s) and all output encryption options apply to all subcommands producing Android Backup files as output(s).

  • options:

    • --version : show program's version number and exit
    • -h, --help : show this help message and exit
    • --markdown : show help messages formatted in Markdown

  • input decryption passphrase:

    • -p PASSPHRASE, --passphrase PASSPHRASE : passphrase for an encrypted INPUT_AB_FILE
    • --passfile PASSFILE : a file containing the passphrase for an encrypted INPUT_AB_FILE; similar to -p option but the whole contents of the file will be used verbatim, allowing you to, e.g. use new line symbols or strange character encodings in there; default: guess based on INPUT_AB_FILE trying to replace ".ab" or ".adb" extension with ".passphrase.txt"

  • input decryption checksum verification:

    • --ignore-checksum : ignore checksum field in INPUT_AB_FILE, useful when decrypting backups produced by weird Android firmwares

  • output encryption passphrase:

    • --output-passphrase OUTPUT_PASSPHRASE : passphrase for an encrypted OUTPUT_AB_FILE
    • --output-passfile OUTPUT_PASSFILE : a file containing the passphrase for an encrypted OUTPUT_AB_FILE

  • output encryption parameters:

    • --output-salt-bytes SALT_BYTES : PBKDF2HMAC salt length in bytes; default: 64
    • --output-iterations ITERATIONS : PBKDF2HMAC iterations; default: 10000

  • subcommands:

    • {ls,list,rewrap,strip,ab2ab,split,ab2many,merge,many2ab,unwrap,ab2tar,wrap,tar2ab}
      • ls (list) : list contents of an Android Backup file
      • rewrap (strip, ab2ab) : strip or apply encyption and/or compression from/to an Android Backup file
      • split (ab2many) : split a full-system Android Backup file into a bunch of per-app Android Backup files
      • merge (many2ab) : merge a bunch of Android Backup files into one
      • unwrap (ab2tar) : convert an Android Backup file into a TAR file
      • wrap (tar2ab) : convert a TAR file into an Android Backup file

hoardy-adb ls

List contents of an Android Backup file similar to how tar -tvf would do, but this will also show Android Backup file version, compression, and encryption parameters.

  • positional arguments:
    • INPUT_AB_FILE : an Android Backup file to be used as input, set to "-" to use standard input

hoardy-adb rewrap

Convert a given Android Backup file into another Android Backup file with encyption and/or compression applied or stripped away.

Versioning parameters and the TAR file stored inside the input file are copied into the output file verbatim.

For instance, with this subcommand you can convert an encrypted and compressed Android Backup file into a simple unencrypted and uncompressed version of the same, or vice versa. The former of which is useful if your Android firmware forces you to encrypt your backups but you store your backups on an encrypted media anyway and don't want to remember more passphrases than strictly necessary. Or if you want to strip encryption and compression and re-compress using something better than zlib.

  • positional arguments:

    • INPUT_AB_FILE : an Android Backup file to be used as input, set to "-" to use standard input
    • OUTPUT_AB_FILE : file to write the output to, set to "-" to use standard output; default: "-" if INPUT_TAR_FILE is "-", otherwise replace ".ab" or ".adb" extension of INPUT_TAR_FILE with .stripped.ab

  • options:

    • -k, --keep-compression : copy compression flag and data from input to output verbatim; this will make the output into a compressed Android Backup file if the input Android Backup file is compressed and vice versa; this is the fastest way to strip, since it just copies bytes around
    • -c, --compress : (re-)compress the output file; it will use higher compression level defaults than those used by Android; with this option enabled hoardy-adb will be quite slow; by default, compression will be stripped away
    • -e, --encrypt : (re-)encrypt the output file; on a modern CPU (with AES-NI) enabling this option costs almost nothing, on an old CPU it will be quite slow; by default, encription will be stripped away

hoardy-adb split

Split a full-system Android Backup file into a bunch of per-app Android Backup files.

Resulting per-app files can be given to adb restore to restore selected apps.

Also, if you do backups regularly, then splitting large Android Backup files like this and deduplicating per-app files between backups could save a lot of disk space.

  • positional arguments:

    • INPUT_AB_FILE : an Android Backup file to be used as input, set to "-" to use standard input

  • options:

    • -c, --compress : compress per-app output files; by default, the outputs will be uncompressed
    • -e, --encrypt : encrypt per-app output files; when enabled, the --output-passphrase/--output-passfile and other output encryption parameters will be reused for all the generated files, but all encryption keys and salts will be unique; by default, the outputs will be unencrypted
    • --prefix PREFIX : file name prefix for output files; default: hoardy_adb_split_backup if INPUT_AB_FILE is "-", hoardy_adb_split_<INPUT_AB_FILE without its ".ab" or ".adb" extension> otherwise

hoardy-adb merge

Merge many smaller Android Backup files into a single larger one. A reverse operation to split.

This exists mostly for checking that split is not buggy.

  • positional arguments:

    • INPUT_AB_FILE : Android Backup files to be used as inputs
    • OUTPUT_AB_FILE : file to write the output to

  • options:

    • -c, --compress : compress the output file; by default, the output will be uncompressed
    • -e, --encrypt : encrypt the output file; by default, the output will be unencrypted

hoardy-adb unwrap

Convert Android Backup file into a TAR file by stripping Android Backup header, decrypting and decompressing as necessary.

The TAR file stored inside the input file gets copied into the output file verbatim.

  • positional arguments:
    • INPUT_AB_FILE : an Android Backup file to be used as input, set to "-" to use standard input
    • OUTPUT_TAR_FILE : file to write output to, set to "-" to use standard output; default: guess based on INPUT_AB_FILE while setting extension to .tar

hoardy-adb wrap

Convert a TAR file into an Android Backup file by prepending Android Backup header, compressing and encrypting as requested.

The input TAR file gets copied into the output file verbatim.

Note that unwrapping a .ab file, unpacking the resulting .tar, editing the resulting files, packing them back with GNU tar utility, running hoardy-adb wrap, and then running adb restore on the resulting file will probably crash your Android device (phone or whatever) because the Android-side code restoring from the backup expects the data in the packed TAR to be in a certain order and have certain PAX headers, which GNU tar will not produce.

So you should only use this on files previously produced by hoardy-adb unwrap or if you know what it is you are doing.

  • positional arguments:

    • INPUT_TAR_FILE : a TAR file to be used as input, set to "-" to use standard input
    • OUTPUT_AB_FILE : file to write the output to, set to "-" to use standard output; default: "-" if INPUT_TAR_FILE is "-", otherwise replace ".ab" or ".adb" extension of INPUT_TAR_FILE with .ab

  • options:

    • -c, --compress : compress the output file; by default, the output will be uncompressed
    • -e, --encrypt : encrypt the output file; by default, the output will be unencrypted
    • --output-version OUTPUT_VERSION : Android Backup file version to use; required

Usage notes

Giving an encrypted INPUT_AB_FILE as input, not specifying --passphrase or --passfile, and not having a file named {INPUT_AB_FILE with ".ab" or ".adb" extension replaced with ".passphrase.txt"} in the same directory will cause the passphrase to be read interactively from the tty.

Examples

  • List contents of an Android Backup file:

    hoardy-adb ls backup.ab

  • Use tar util to list contents of an Android Backup file instead of running hoardy-adb ls:

    hoardy-adb unwrap backup.ab - | tar -tvf -

  • Extract contents of an Android Backup file:

    hoardy-adb unwrap backup.ab - | tar -xvf -

  • Strip encryption and compression from an Android Backup file:

    # equivalent
hoardy-adb strip backup.ab backup.stripped.ab
hoardy-adb strip backup.ab

    # equivalent
hoardy-adb strip --passphrase secret backup.ab
hoardy-adb strip -p secret backup.ab

    # with passphrase taken from a file
echo -n secret > backup.passphrase.txt
# equivalent
hoardy-adb strip backup.ab
hoardy-adb strip --passfile backup.passphrase.txt backup.ab

    # with a weird passphrase taken from a file
echo -ne "secret\r\n\x00another line" > backup.passphrase.txt
hoardy-adb strip backup.ab

  • Strip encryption but keep compression, if any:

    # equivalent
hoardy-adb strip --keep-compression backup.ab backup.stripped.ab
hoardy-adb strip -k backup.ab

  • Strip encryption and compression from an Android Backup file and then re-compress using xz:

    hoardy-adb strip backup.ab - | xz --compress -9 - > backup.ab.xz
# ... and then convert to tar and list contents:
xzcat backup.ab.xz | hoardy-adb unwrap - | tar -tvf -

  • Convert an Android Backup file into a TAR archive:

    # equivalent
hoardy-adb unwrap backup.ab backup.tar
hoardy-adb unwrap backup.ab

  • Convert a TAR archive into an Android Backup file:

    # equivalent
hoardy-adb wrap --output-version=5 backup.tar backup.ab
hoardy-adb wrap --output-version=5 backup.tar

Development: ./test-cli.sh [--help] [--output-version VERSION] PATH [PATH ...]

Sanity check and test hoardy-adb command-line interface.

Example

./test-cli.sh backup.ab backup2.ab

About

List contents of, unpack, and convert Android Backup files to TAR files and back, decrypt, encrypt, split them into by-app pieces, etc. Android Backup files are `backup.ab`, `*.ab`, `*.adb`, and similarly named files produced by `adb backup`, `bmgr`, and similar tools.

oxij.org/software/hoardy-adb/

Topics

android backups backup encryption adb restore android-architecture android-backup archiver adb-backups adb-android adb-backup android-backup-extractor android-backup-toolkit android-backup-processor

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Readme

License

GPL-3.0 license
Activity
Custom properties

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37 stars

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Releases 6

v1.2.0 Latest
Jan 22, 2025
+ 5 releases

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