sshranger

#!/bin/bash
#Written by xVlaze
#Version: 1.0

function scan() {
#Traps the script in an infinite loop the only way of getting out of it is choosing a valid option
while true; do

read -p "Enter your preferred scanning style. Type 'help' for more information: " STYLE
       
    case "$STYLE" in


	"arp")        
	
            echo "Scanning network..."
	    IPLIST=$(arp | grep -vi incomplete | awk '!/Address/ {print $1}' | sort -u) 
	    break

	    ;;


	"nmap")
        
            echo ""
	    read -p 'Enter a custom subnet value (192.168.[VALUE].*): ' VALUE
	
	    while ! [[ "$VALUE" =~ ^-?[0-9]+$ ]]; do
	    
		     echo "Please specify an integer as your value, we (still) can't process alien IP addresses!"
		     sleep 1
		     read -p 'Enter a custom subnet value (192.168.[VALUE].*): ' VALUE

	    done

	    echo 'Scanning network...'
	    IPLIST=$(nmap -sn 192.168.$VALUE.* | grep report | awk '{print $5}' | sort -u)
	    break
	
	    ;;


	"help")
        
            echo ""
            echo "You need to specify which scanning method you want to use. Possible options are 'arp' or 'nmap'"
	    echo "-without quotes-. While arp is faster, nmap will provide a more accurate result, as arp relies on"
	    echo "computer network memory, which might have problems with recently created servers."
	    echo ""

	    ;;	


	*)

	    clear
	    echo 'Please enter a valid value.'
	    sleep 0.5

	    ;;

    esac

done

}



function connect() {

iparr=($IPLIST) #Converts IP list to an easier to process array
read -p "Enter network's username: " USERNAME
while [ "$USERNAME" == "" ]; do

	clear
	echo -n "Please enter a valid username."
	sleep 1
	clear
	read -p "Enter network's username: " USERNAME

done

clear

read -n1 -p "Do you want to try another username? [Y/n]" 

if  [[ "$REPLY" = [yY] ]]; then

	read -p "Enter a second username: " USERNAME2
 
		while [ "$USERNAME2" == "" ]; do

			clear
			echo "Please enter a valid username."
			sleep 1
			clear
			read -p "Enter a second username: " USERNAME2

		done

fi

clear

read -p 'Do you want to specify a custom port? (Default: 22) [Y/n] ' 

if [[ "$REPLY" = [yY] ]]; then
    
	read -p 'Enter port number: ' PORT
	
		while ! [[ "$PORT" =~ ^-?[0-9]+$ ]]; do 
			
				echo "Please enter a valid value."
				sleep 1
				read -p "Enter port number: " PORT

		done	

	clear
	echo '---------------------------------------------------------------------------------------------------------' 
	echo 'These are the IPs found for connecting:'
	echo
  	echo ${iparr[@]}
	# Only if USERNAME2 exists. -> echo $USERNAME2@${iparr[@]}':'$PORT
	echo
	echo '---------------------------------------------------------------------------------------------------------' 
	echo
	echo 'Connecting...'
	echo
       
	    
	for address in "${iparr[@]}"; do

 	    ssh "$address" -p $PORT  

	done
       
else 

	clear
	PORT=22
	echo '--------------------------------------------------------------------' 
	echo 'These are the IPs found for connecting:'
	echo
	echo ${iparr[@]}	
	echo
	echo '--------------------------------------------------------------------' 
	echo
	echo 'Connecting...'
	echo
		

fi
}


clear
echo 'Welcome to SSHRanger, your easy-to-use multifunction SSH handler. This script will help you to scan'
echo "and connect to SSH servers found in your network. Note that this is NOT a hacking tool: we don't (but"
echo "you should) know any of your server passwords, so if you forget yours, think about your pet's name next time."
sleep 1
echo
read  -p "Do you want to start a new network scan? [Y/n] " 

if [[ $REPLY = [yY] ]]; then
	
	scan

else

	echo
	echo
	echo "We won't tell anybody you have been here..."
	sleep 1
	clear
	exit 1

fi

read -p "The network has been successfully scanned. Do you want to start an SSH connection? " ANSCONN
if [[ "$ANSCONN" = [yY] ]]; then
	
	connect

else

	echo "We won't tell anybody you have been here..."
	sleep 1
	clear
	exit 1

fi