catpcha-cracker-1.sh

#!/bin/bash

image="$(ls Captcha.jpg)"
pixelaje=$(convert -identify $image /dev/null | awk '{print $3}')
let px_x="$(echo $pixelaje | cut -d"x" -f1 | tr -d "\n")"
let px_y="$(echo $pixelaje | cut -d"x" -f2 | tr -d "\n")"
black="(  0,  0,  0)  #000000  black"
white="(255,255,255)  #FFFFFF  white"
txt_out="captcha_clean.txt"

echo -e "\t\t\e[1;4mCaptcha Cracker by \e[m\e[1;4;36m@hecky\e[m"
echo -e "\n\e[1;33m[+]\e[m\e[1;35mAnalizando:\e[m "$image
echo -e "\e[1;33m[+]\e[m\e[1;34mTamaño:\e[m $pixelaje px"

if [[ -e $txt_out ]];then
    echo -e "\n\e[36m> $txt_out ya existe!!\n> Eliminandolo...\e[m"
    rm -rf $txt_out
fi

echo -e "\n\e[1;31m[*]\e[m\e[1;32mLimpiando Imagen!!\e[m"
echo "# ImageMagick pixel enumeration: $px_x,$px_y,255,srgb" > $txt_out

for ((y=0;y<$px_y;y++));do
    for ((x=0;x<$px_x;x++));do
        rgb=$(convert "$image"[1x1+$x+$y] txt: | grep "(.*)" -wo | cut -d ")" -f1 | tr -d "(" | tr -d "\n" | tr -d " "| tr "," " ")
        let r=$(echo $rgb | awk '{print $1}')
        let g=$(echo $rgb | awk '{print $2}')
        let b=$(echo $rgb | awk '{print $3}')

        if [[ $r -gt 100 || $g -gt 100 || $b -gt 100 ]];then
            echo "$x,$y: $black" >> $txt_out
        else
            echo "$x,$y: $white" >> $txt_out
        fi
    done
done
convert $txt_out captcha_clean.pnm && echo -e "\e[1;31m[*]\e[m\e[1;33mImagen procesada, exitosamente!! =)\e[m" ; rm -rf $txt_out
cracked=$(echo $(gocr captcha_clean.pnm))
echo -e "\n<<< Captcha: \e[1;33;41m$cracked\e[m >>>"
echo -e "\n\e[33;41mNeobits.org\e[m"