Simple bash script to bruteforce Mac dmg file password with a password list - only useful for when you have a list of passwords that you often use

bruteforce.sh

#!/bin/bash
if [ "$#" -ne 2 ]; then
    echo "Usage: ./bruteforce.sh <dmg file> <password list>"
    exit
fi

dmgfile="$1"
passfile="$2"

function TryPassword
{
    r=$(echo -n "$1" | hdiutil verify -stdinpass "$dmgfile" 2>&1)
    if ! [[ $r =~ "Authentication error" ]]; then
        echo ""
        echo "Found! The password is: $1"
    exit
    fi
}

for i in $(cat $2); do
 TryPassword "$i"
done