zp_crack.sh

#!/usr/bin/env bash
#
# +===============================================+
# || A Simple ZIP Password Cracker               ||
# || Developed By : http:\\www.sec-articles.net  ||
# +===============================================+
#

declare -r TRUE=0
declare -r FALSE=1
flag=$FALSE
counter=0

# Declaring char_sets

chars_1=`echo {a..z}`
chars_2=`echo {A..Z}`
chars_3=`echo {0..9}`
chars_4="~ ! @ \$ % ^ - _ = + { } [ ] : , . / ?"


# cracking function
function cracker()
{
    pass=$1
    echo "trying Password $pass"
    counter=$(($counter + 1))
    unzip -P $pass -o $file_name
    [ $? -eq 0 ] && clear && Banner && echo "Password Found : $pass" && echo "Password tried : $counter"&& return $TRUE || return $FALSE
}



# word_List generator
function word_gen()
{
    args=$1
    [ ${#args} -ge $length ] && cracker $1 && echo "Password Cracked" && flag=$TRUE && exit
    if [ ${#args} -lt $length ]; then
        for c in $chars; do
            word_gen $1$c
        done
    fi
}

function is_num()
{
    [ "$1" -eq "$1" ] > /dev/null 2>&1
    return $?
}


function Show_message()
{
    echo "+===============================================+"
    echo "|  A Simple ZIP Password Cracker                |"
    echo "|  Developed By : http:\\\\www.sec-articles.net   |"
    echo "+===============================================+"
    echo " ./s_zipcrack [Mode b/d] {[Lenght_of_Passowrd] [Type_Password] [location]}  {[location]}"
    echo""
    echo " For brute_force Mode :- "
    echo " ./s_zipcrack -b [Lenght_of_Passowrd] [Type_Password] [zip_file_location]"
    echo " Length_of_Password -  integer value"
    echo " Type_of_Password   -  \"A\" Upper_case     A-Z"
    echo "                    -  \"a\" Lower_case     a-z"
    echo "                    -  \"n\" numeric        0-9"
    echo "                    -  \"c\" Special_chars  !.?"
    echo " zip_file_Location  -  Full Path of Zip File"
    echo " Example : ./s_zipcrack -b 4 n /home/user/Desktop/secure.zip"
    echo ""
    echo " For Dictonary Mode : - "
    echo " ./s_zipcrack -d [Password_dictonary_file] [zip_file_Location]"
    echo " Password_dictonary_file - Full Path of Password dictonary file "
    echo " zip_file_Location       - Full Path of Zip file"
}

function Banner()
{

        echo "+===============================================+"
        echo "|  A Simple ZIP Password Cracker                |"
        echo "|  Developed By : http:\\\\www.sec-articles.net   |"
        echo "+===============================================+"
    echo ""
}



function brute_force()
{
    # Handling Arguments
    if [ "$1" = "" ]
    then
        Show_message
        exit
    fi

    if is_num $1
    then
        length=$1
    else
        length=2
    fi

    for args in "$@"; do
        case $args in
            a) chars="$chars $chars_1" ;;
            A) chars="$chars $chars_2" ;;
            n) chars="$chars $chars_3" ;;
            c) chars="$chars $chars_4" ;;
        esac;
    done


    if [ "$chars" = "" ]
    then
        chars="$chars_1"
    fi


    for arg in "$@"; do

        if [ -a $arg ]
        then
            file_name=$arg
            break
        fi

    done

    if [ "$file_name" = "" ]
    then
        Banner
        echo "Could not find \"$3\""
        echo "please check the file location & try Again."
        exit
    fi

    #calling word_gen function
    for w in $chars; do
        word_gen $w
    done

}

function dictonary()
{

    if [ "$1" = "" ]
    then
        Banner
        echo "please give the password_list."
        exit 1
    elif [ "$2" = "" ]
    then
        Banner
        echo "please give the zip file location."
        exit 1
    fi

    if [ -a $1 ]
    then
        pass_list=$1
    else
        Banner
        echo "could not find \"$1\""
        echo "please check the file location & try Again."
        exit 1
    fi

    if [ -a $2 ]
    then
        file_name=$2
    else
        Banner
        echo "could not find \"$2\""
        echo "please check the file location & try Again."
        exit 1
    fi


    # reading passwords & calling to cracker function

    length=`cat $pass_list | wc -l`
    for ((i=0;i<=$length;i++))
    do
        passwd=`sed -n "$i"p $pass_list`
        cracker $passwd && echo "Password Cracked" && flag=$TRUE && exit
    done
}

# Main

if [ "$1" = "b" ]
then
        brute_force $2 $3 $4
elif [ "$1" = "d" ]
then
        dictonary $2 $3
elif [ "$1" = "" ]
then
    Show_message
    exit
else
        Banner
        echo "Error in Arguments..!?"
        echo "please choose the correct mode. b/d [brute_force/dictonary_attack]"
        exit
fi

if [ $flag -eq $FALSE ]
then
    clear
    Banner
    echo "Could not Found Password ?? "
    echo "Password tried : $counter"
    echo "please Try Again with other Keywords."
fi