Skip to content


Switch branches/tags

Name already in use

A tag already exists with the provided branch name. Many Git commands accept both tag and branch names, so creating this branch may cause unexpected behavior. Are you sure you want to create this branch?

NOTE (Licensing)

Commercial usage of this project requires a license from the author(s) of this project. Contact us for details.

Note: The licensing terms of this project were changed due to commercial abuse from OpenAudible ( and other projects.


Plugin for RainbowCrack to recover your own Audible activation data (activation_bytes) in an offline manner.

You need to recover or retrieve your "activation_bytes" only once. This single "activation_bytes" value will work for all your .aax files.


Donations are gladly accepted. Please send BTC to 1FDFp8kWjnUCGTLw1SVkim6kRnYDge2vYh to support the development, and maintenance of this project. Thank you!


Git clone this repository on your machine. This repository has the required rainbow tables (*.rtc files) and RainbowCrack binaries.

git clone

Usage on Linux

FFmpeg 2.8.1+ is required. Use Wine with the included (in run folder) Windows binaries in case these Linux executables do not run on your distribution.

Extract SHA1 checksum from the .aax file
$ ffprobe test.aax  # extract SHA1 checksum
[mov,mp4,m4a,3gp,3g2,mj2 @ 0x1dde580] [aax] file checksum == 999a6ab8...
[mov,mp4,m4a,3gp,3g2,mj2 @ 0x1dde580] [aax] activation_bytes option is missing!
Recover "activation_bytes"
$ ./rcrack . -h 999a6ab8...

Usage on Windows

Download FFmpeg from

Extract SHA1 checksum from .aax file
C:\>ffprobe.exe sample.aax
ffprobe version N-79460-g21acc4d Copyright (c) 2007-2016 the FFmpeg developers
  built with gcc 5.3.0 (GCC)
[mov,mp4,m4a,3gp,3g2,mj2 @ 039aae60] [aax] file checksum == 999a6ab8...
[mov,mp4,m4a,3gp,3g2,mj2 @ 039aae60] [aax] activation_bytes option is missing!
Recover "activation_bytes"
C:\tables>run\rcrack.exe . -h 999a6ab8...
plaintext found:                              1 of 1
total time:                                   13.98 s
999a6ab8...                               xyz   hex:CAFED00D

"activation_bytes" is CAFED00D here.


See for details.


No releases published


No packages published