Hiding a file in an image

steghide embed -cf IMAGEFILE -ef FILETOHIDE 

Extract the file

steghide extract -sf IMAGEFILE -p PASSWORD

Bruteforce

ROCKYOUFILE=/usr/share/wordlists/rockyou.txt
ROCKYOULIST=`cat /usr/share/wordlists/rockyou.txt`
for word in $ROCKYOULIST
do
    echo $word
    ret=`steghide extract -sf $1 -p $word`
    if [ $? -eq 0 ]
    then
        echo Found 
        exit 0
    fi
done