Crack Audible's DRM encryption with rainbowcrack

#!/bin/bash

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

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

cd ~/rainbowcrack
unzip -q tables.zip -d /media/ramdisk/
./rcrack /media/ramdisk/ -h $HASH | grep 'hex:' | awk -F ':' '{print $2}' | xargs -0 printf "Your activation code is: \033[0;31m%s\033[0m"
rm -drf /media/ramdisk/tables


# 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