wordlist_generator.sh

#! bash

generate ()
{
  (( $len != ${#1} )) && return 1
  if [ ${pattern:0:1} = y ]
    then
      case ${#1} in
        4)
          [ ${1:0:1} != ${1:1:1} ] && \
          [ ${1:1:1} != ${1:2:1} ] && \
          [ ${1:2:1} != ${1:3:1} ] && \
          [ ${1:0:1} != ${1:2:1} ] && \
          [ ${1:0:1} != ${1:3:1} ] && \
          [ ${1:1:1} != ${1:3:1} ] && \
          echo "$1" && echo -e "${1}\r" >> wordlist.txt
        ;;
        5)
          [ ${1:0:1} != ${1:1:1} ] && \
          [ ${1:1:1} != ${1:2:1} ] && \
          [ ${1:2:1} != ${1:3:1} ] && \
          [ ${1:3:1} != ${1:4:1} ] && \
          [ ${1:0:1} != ${1:2:1} ] && \
          [ ${1:0:1} != ${1:3:1} ] && \
          [ ${1:0:1} != ${1:4:1} ] && \
          [ ${1:1:1} != ${1:3:1} ] && \
          [ ${1:1:1} != ${1:4:1} ] && \
          [ ${1:2:1} != ${1:4:1} ] && \
          echo "$1" && echo -e "${1}\r" >> wordlist.txt
        ;;
        6)
          [ ${1:0:1} != ${1:1:1} ] && \
          [ ${1:1:1} != ${1:2:1} ] && \
          [ ${1:2:1} != ${1:3:1} ] && \
          [ ${1:3:1} != ${1:4:1} ] && \
          [ ${1:4:1} != ${1:5:1} ] && \
          [ ${1:0:1} != ${1:2:1} ] && \
          [ ${1:0:1} != ${1:3:1} ] && \
          [ ${1:0:1} != ${1:4:1} ] && \
          [ ${1:0:1} != ${1:5:1} ] && \
          [ ${1:1:1} != ${1:3:1} ] && \
          [ ${1:1:1} != ${1:4:1} ] && \
          [ ${1:1:1} != ${1:5:1} ] && \
          [ ${1:2:1} != ${1:4:1} ] && \
          [ ${1:2:1} != ${1:5:1} ] && \
          [ ${1:3:1} != ${1:5:1} ] && \
          echo "$1" && echo -e "${1}\r" >> wordlist.txt
        ;;
      esac
    else
      echo "$1" && echo -e "${1}\r" >> wordlist.txt
  fi
  return 0
}

if [ -f wordlist.txt ]
  then
    echo -e "\nfile 'wordlist.txt' exist, abort"
    exit 1
fi

read -p "enter pin with dot as wildcard: " passwd

len=${#passwd}
if (( $len < 4 )) || (( $len > 6 ))
  then
    echo -e "\ninvalid pin length, abort"
    exit 1
fi

read -p "pin is pattern [y/n]? : " pattern
pattern=${pattern,}

for (( i; i<${#passwd}; i++ ))
  do
    if [ ${passwd:$i:1} != . ]
      then
        let $(printf 'digit_%02d=%c\n' $((i+1)) ${passwd:$i:1})
    fi
done

d1=$digit_01
d2=$digit_02
d3=$digit_03
d4=$digit_04
d5=$digit_05
d6=$digit_06

for (( d1=${digit_01:-0}; d1<=${digit_01:-9}; d1++ ))
  do
    generate "${d1:-0}" || \
    for (( d2=${digit_02:-0}; d2<=${digit_02:-9}; d2++ ))
      do
        generate "${d1:-0}${d2:-0}" || \
        for (( d3=${digit_03:-0}; d3<=${digit_03:-9}; d3++ ))
          do
            generate "${d1:-0}${d2:-0}${d3:-0}" || \
            for (( d4=${digit_04:-0}; d4<=${digit_04:-9}; d4++ ))
              do
                generate "${d1:-0}${d2:-0}${d3:-0}${d4:-0}" || \
                for (( d5=${digit_05:-0}; d5<=${digit_05:-9}; d5++ ))
                  do
                    generate "${d1:-0}${d2:-0}${d3:-0}${d4:-0}${d5:-0}" || \
                    for (( d6=${digit_06:-0}; d6<=${digit_06:-9}; d6++ ))
                      do
                        generate "${d1:-0}${d2:-0}${d3:-0}${d4:-0}${d5:-0}${d6:-0}"
                    done
                done
            done
        done
    done
done

exit 0