Create turtle.sh

Easy ICS for your LAN Turtle.

turtle.sh

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+#!/bin/bash
+#
+# I hope this makes development for turtle modules less of a pain... who wants to be tethered to a cable anymore?
+# - Newbi3
+# Extra edits made by foxtrot <foxtrotnull(@)gmail.com>
+# Credit goes to whoever wrote the wp5.sh script for the wifi pineapple.
+#
+
+echo "$(tput setaf 2)"
+echo "               LAN TURTLE"
+echo "                by Hak5"
+echo "        .-./*)            (*\.-."
+echo "      _/___\/              \/___\_"
+echo "        U U                  U U"
+echo "$(tput sgr0)"
+
+echo -n "Turtle Netmask [255.255.255.0]: "
+read turtlenetmask
+if [[ $turtlenetmask == '' ]]; then 
+turtlenetmask=255.255.255.0 #Default netmask for /24 network
+fi
+
+echo -n "Turtle Network [172.16.84.0/24]: "
+read turtlenet
+if [[ $turtlenet == '' ]]; then 
+turtlenet=172.16.84.0/24 # Turtle network. Default is 172.16.84.0/24
+fi
+
+echo -n "Interface between PC and Turtle [eth1]: "
+read turtlelan
+if [[ $turtlelan == '' ]]; then 
+turtlelan=eth1 # Interface of ethernet cable directly connected to Turtle
+fi
+
+echo -n "Interface between PC and Internet [wlan0]: "
+read turtlewan
+if [[ $turtlewan == '' ]]; then 
+turtlewan=wlan0 #i.e. wlan0 for wifi, ppp0 for 3g modem/dialup, eth0 for lan
+fi
+
+tempturtlegw=`netstat -nr | awk 'BEGIN {while ($3!="0.0.0.0") getline; print $2}'` #Usually correct by default
+echo -n "Internet Gateway [$tempturtlegw]: "
+read turtlegw
+if [[ $turtlegw == '' ]]; then 
+turtlegw=`netstat -nr | awk 'BEGIN {while ($3!="0.0.0.0") getline; print $2}'` #Usually correct by default
+fi
+
+echo -n "IP Address of Host PC [172.16.84.42]: "
+read turtlehostip
+if [[ $turtlehostip == '' ]]; then 
+turtlehostip=172.16.84.42 #IP Address of host computer
+fi
+
+echo -n "IP Address of Turtle [172.16.84.1]: "
+read turtleip
+if [[ $turtleip == '' ]]; then 
+turtleip=172.16.84.1 #Thanks Douglas Adams
+fi
+
+echo ""
+echo "$(tput setaf 6)     _ .   $(tput sgr0)        $(tput setaf 7)___$(tput sgr0)          $(tput setaf 2)  .-./*) $(tput sgr0)   Internet: $turtlegw  - $turtlewan"
+echo "$(tput setaf 6)   (  _ )_ $(tput sgr0) $(tput setaf 5)<-->$(tput sgr0)  $(tput setaf 7)[___]$(tput sgr0)  $(tput setaf 5)<-->$(tput sgr0)  $(tput setaf 2) _/___\/  $(tput sgr0)   Computer: $turtlehostip"
+echo "$(tput setaf 6) (_  _(_ ,)$(tput sgr0)       $(tput setaf 7)\___\\$(tput sgr0)        $(tput setaf 2)   U U $(tput sgr0)      Turtle: $turtlenet - $turtlelan"
+
+#Bring up Ethernet Interface directly connected to Turtle
+ifconfig $turtlelan $turtlehostip netmask $turtlenetmask up
+
+# Enable IP Forwarding
+echo '1' > /proc/sys/net/ipv4/ip_forward
+#echo -n "IP Forwarding enabled. /proc/sys/net/ipv4/ip_forward set to "
+#cat /proc/sys/net/ipv4/ip_forward
+
+#clear chains and rules
+iptables -X
+iptables -F
+#echo iptables chains and rules cleared
+
+#setup IP forwarding
+iptables -A FORWARD -i $turtlewan -o $turtlelan -s $turtlenet -m state --state NEW -j ACCEPT
+iptables -A FORWARD -m state --state ESTABLISHED,RELATED -j ACCEPT
+iptables -A POSTROUTING -t nat -j MASQUERADE
+#echo IP Forwarding Enabled
+
+#remove default route
+route del default
+#echo Default route removed
+
+#add default gateway
+route add default gw $turtlegw $turtlewan
+#echo Turtle Default Gateway Configured
+
+#automatically try to configure LAN Turtle
+ping -i 1 -c1 $turtleip
+if [ $? -eq 0 ]; then
+echo "ICS configuration successful."
+echo "Configuring LAN Turtle."
+echo "Enter password if prompted"
+ssh root@$turtleip "echo \"nameserver 8.8.8.8\" >> /etc/resolv.conf && route add default gw 172.16.84.42"
+else
+echo "Could not connect to the LAN Turtle!"
+fi
+
+echo ""
+echo "Happy Shelling :)"
+echo ""