#File selection

if [ "$1" == "-h" ];then

    echo "Usage: crExtract [-n filename.apk]"

    exit

    if [ "$1" == "-n" ];then

        if [ $2 ];then

            filename=$2

        else

            echo "You need to insert a filename"

            exit

        fi

    else

        echo "Give me the clash royale filename"

        read filename

    fi

    if [ ! -f $filename ];then

        echo "File not found!"

        exit

    fi

fi

#Unzipping

echo "Unzipping crash royale apk"

unzip -o -q $filename -d "extracted"

#Decrypting

echo "Decrypting csv files"

mkdir decrypted

for path in $(find assets -name "*.csv")

    do

    f= $(echo "$path" | rev | cut -d "/" -f1 | rev)

        (

            dd if=$path bs=1 count=9 status=none

            dd if=/dev/zero bs=1 count=4 status=none

            dd if=$path bs=1 skip=9 status=none

        ) | lzma -d -f > "decrypted/" $f

    done

echo "All the decrypted file are stored in the decrypted folder"

#Delete partial files

rm -r extracted