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ignitetch
GitHub Repository: ignitetch/advphishing
 Path: blob/master/PHPMailer/test/fakepopserver.sh
738 views
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#!/usr/bin/env bash

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# Fake POP3 server

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# By Marcus Bointon <[email protected]>

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# Copyright 2010 - 2020 Marcus Bointon

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# Based on code by 'Frater' found at http://www.linuxquestions.org/questions/programming-9/fake-pop3-server-to-capture-pop3-passwords-933733

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# Does not actually serve any mail, but supports commands sufficient to test POP-before SMTP

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# Can be run directly from a shell like this:

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# mkfifo fifo; nc -l 1100 <fifo |./fakepopserver.sh >fifo; rm fifo

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# It will accept any user name and will return a positive response for the password 'test'

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# Licensed under the GNU Lesser General Public License: http://www.gnu.org/copyleft/lesser.html

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# Enable debug output

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#set -xv

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export PATH=/usr/local/sbin:/usr/local/bin:/sbin:/bin:/usr/sbin:/usr/bin:/root/bin

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LOGFOLDER=/tmp

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LOGFILE=${LOGFOLDER}/fakepop.log

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LOGGING=1

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DEBUG=1

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TIMEOUT=60

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POP_USER=

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POP_PASSWRD=test

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LINES=1

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BREAK=0

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write_log () {

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  if [ ${LINES} -eq 1 ] ; then

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    echo '---'  >>${LOGFILE}

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  fi

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  let LINES+=1

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  [ ${LOGGING} = 0 ] || echo -e "`date '+%b %d %H:%M'` pop3 $*" >>${LOGFILE}

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}

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ANSWER="+OK Fake POP3 Service Ready"

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while [ ${BREAK} -eq 0 ] ; do

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  echo -en "${ANSWER}\r\n"

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  REPLY=""

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  #Input appears in $REPLY

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  read -t ${TIMEOUT}

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  ANSWER="+OK "

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  COMMAND=""

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  ARGS=""

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  TIMEOUT=30

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  if [ "$REPLY" ] ; then

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    write_log "RAW input: '`echo "${REPLY}" | tr -cd '[ -~]'`'"

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    COMMAND="`echo "${REPLY}" | awk '{print $1}' | tr -cd '\40-\176' | tr 'a-z' 'A-Z'`"

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    ARGS="`echo "${REPLY}"    | tr -cd '\40-\176' | awk '{for(i=2;i<=NF;i++){printf "%s ", $i};printf "\n"}' | sed 's/ $//'`"

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    write_log "Command: \"${COMMAND}\""

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    write_log "Arguments: \"${ARGS}\""

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    case "$COMMAND" in

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      QUIT)

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        break

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        ;;

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      USER)

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        if [ -n "${ARGS}" ] ; then

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          POP_USER="${ARGS}"

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          ANSWER="+OK Please send PASS command"

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        fi

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        ;;

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      AUTH)

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        ANSWER="+OK \r\n."

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        ;;

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      CAPA)

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        ANSWER="+OK Capabilities include\r\nUSER\r\nCAPA\r\n."

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        ;;

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      PASS)

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        if [ "${POP_PASSWRD}" == "${ARGS}" ] ; then

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          ANSWER="+OK Logged in."

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          AUTH=1

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        else

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          ANSWER="-ERR Login failed."

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        fi

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        ;;

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      LIST)

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        if [ "${AUTH}" = 0 ] ; then

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          ANSWER="-ERR Not authenticated"

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        else

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          if [ -z "${ARGS}" ] ; then

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            ANSWER="+OK No messages, really\r\n."

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          else

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            ANSWER="-ERR No messages, no list, no status"

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          fi

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        fi

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        ;;

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      RSET)

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        ANSWER="+OK Resetting or whatever\r\n."

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        ;;

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      LAST)

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        if [ "${AUTH}" = 0 ] ; then

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          ANSWER="-ERR Not authenticated"

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        else

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          ANSWER="+OK 0"

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        fi

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        ;;

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      STAT)

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        if [ "${AUTH}" = 0 ] ; then

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          ANSWER="-ERR Not authenticated"

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        else

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          ANSWER="+OK 0 0"

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        fi

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        ;;

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      NOOP)

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        ANSWER="+OK Hang on, doing nothing"

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        ;;

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     esac

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  else

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    echo "+OK Connection timed out"

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    break

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  fi

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done

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echo "+OK Bye!\r\n"

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