Play DRM protected audio files from Audible with ffplay, ffprobe & rainbowcrack

#!/bin/bash

PARRENT=$(pwd)

printf "Cracking Audible's DRM encryption... "

HASH=$(ffprobe $1 2>&1 | grep 'file checksum == ' | awk -F ' == ' '{print $2}')

cd ~/rainbowcrack
unzip -q -d /media/ramdisk/ tables.zip
CODE=$(./rcrack /media/ramdisk/ -h $HASH | grep 'hex:' | awk -F ':' '{print $2}')
rm -drf /media/ramdisk/tables
printf "Your activation code is: \033[0;31m$CODE\033[0m\nStarting playback...\n"
cd $PARRENT
ffplay -activation_bytes $CODE $1

# Simple command line to remux DRM protected Audible files and remove DRM-protection (XXXXXXXX must be replaced with the given activation code):
# ffmpeg -y -activation_bytes XXXXXXXX -i infile.aax -map_metadata 0 -id3v2_version 3 -codec:a copy -vn outfile.m4b