Hey guys!

Sorry i have to split this into 2 parts sadly i cant post 30 images in one topic :(

This is a tutorial on how to use SSL Strip with arpspoof to perform a MitM attack to hijack a victims HTTPS connection allowing you steal passwords and vulnerable information. I hope it is useful to you and that you enjoy it.

Many websites thees days use ssl(HTTPS) it offers an encrypted connection between the client and the server. I will be showing you how to setup arpspoof and ssl strip and perform a MitM attack to break it open.
Before i show you on how to setup anything I'm going to go over how a MitM attack works. MitM stand for man-in-the-middle. this is an attack that allows an intruder to intercept data going between a server(does not have to be on the same network) and a client on a local network without either party realising that the data is also being routed to the attacker.
ssl is a protocol that encrypts the data going between the client and server stopping an attacker from listening in to vulnerable data.
To bypass this we use a program called ssl strip, it imposes it's self as the victim so it receives the unencrypted data then sends it back on to the victim without them knowing. you can find more info on ssl strip here.
Ok now i have all that out of the way i will get on with the tutorial.

first of you will need:
a Linux .iso (i am using ubuntu but you many use any distro you like)
virtual box; this is to emulate Linux inside of windows.

I will get you to download ssl strip and arpspoof later in the tutorial.

If you already have Linux or know how to set up a virtual machine you may skip part 1. If you are using a VM just make sure your adapter is set to bridged mode or ssl strip wont work properly.

Ok once you have downloaded virtual box and ubuntu, start by installing virtual box.
once it has finished installing if you haven't already open it up, you should be confronted with this screen.
(yours wont have backtrack)

Spoiler (Click to View)

Ok we are going to create a new virtual machine, so hit the new button.

Spoiler (Click to View)

Hit next and you should see this.

Spoiler (Click to View)

You are going to need to change the operating system to Linux and the version to ubuntu(or to what distro you are using) and give it a name; hit next.

Spoiler (Click to View)

Now chose how much memory you want the virtual machine to have(keep it low if you don't have much ram)

Spoiler (Click to View)

Hit next on the virtual hard disk screen(leave the settings).on the next screen make sure the virtual disk is set to VDI then hit next again.

Spoiler (Click to View)

On the next screen make sure it's set to Dynamically Allocated. On the last screen select the size you what the virtual hard drive to be, I'm leaving at the default 8gig as i need minimal space for this tutorial.
Hit next then create and then create again.
Your virtual hard disk has now been created :D

Spoiler (Click to View)

Now we need to install Linux onto the virtual hard disk, start it by double clicking the virtual machine on the right side.

Spoiler (Click to View)

In info window will pop up just ignore and hit ok.you should now be com fronted with the first run wizard, hit next.

Spoiler (Click to View)

Ok we now need to select the Linux .iso for installation. start by clicking the folder icon on the right.

Spoiler (Click to View)

Now browse you computer and find the Linux .iso you downloaded earlier and hit open.

Spoiler (Click to View)

Then hit next then start. after a few seconds Linux should startup click install and just follow the installation until it's done then hit restart.

Spoiler (Click to View)

Once you have installed and restarted the virtual machine shut it down again, we need to change some settings. Once it's shut down you should be back at the virtual box manager. Select the virtual machine and hit settings.

Spoiler (Click to View)

A new window will appear with all the settings for that virtual machine. now you want to select the network tab.

Spoiler (Click to View)

Note: this attack will only work in your LAN not over the internet.

Under adapter 1 you are going to change the setting 'Attached to:' from NAT to Bridged Adapter and select the network interface that connects to the rest of your LAN.

Spoiler (Click to View)

Hit ok and restart the virtual machine.
once you have logged in open terminal.
Applications-> Accessories-> Terminal

Spoiler (Click to View)

Once open type this into the command line.

Code:

sudo apt-get install dsniff

it will then ask for you password then if you want to continue.
this will now download and install arpspoof.

Spoiler (Click to View)

Now we need to download ssl strip.
in a terminal window type out this command.

Code:

wget http://www.thoughtcrime.org/software/sslstrip/sslstrip-0.9.tar.gz

Spoiler (Click to View)

we will come back to ssl strip later

We now need to extract the archive. 
in a terminal window type this

Code:

tar zxvf sslstrip-0.9.tar.gz

Spoiler (Click to View)

We now need to wright a iptable rule to route all http requests coming in on port 80 to ssl strip which will be running on port 8080.
in a terminal window type this.

Code:

iptables -t nat -A PREROUTING -p tcp --destination-port 80 -j REDIRECT --to-port 8080

Spoiler (Click to View)

We now need to enable packet forwarding.
In a terminal window type this.

Code:

sudo -i

this allows you to edit system files.
now type

Code:

echo "1" > /proc/sys/net/ipv4/ip_forward

Spoiler (Click to View)

Now we are all set to start the attack :)

I would like to note that this for of attack will ONLY work on a local network and not over the internet.

first we need to find the networks gateway, use this command.

Code:

route -n

The gateway ip will be in the bottom row under the gateway column.

Spoiler (Click to View)

You will now need the victims ip, i am not going to go over how to acquire one in this tutorial(i will be using my laptop as a victim).

We can now start the MitM attack with this command.

Code:

sudo arpspoof -i eth0 -t <victim's ip> <gateway>

Spoiler (Click to View)

It should start spiting out arp reply messages.
This fools the router to send you all the traffic going to the victim.

Now we need to start ssl strip make sure you do this in a new window.

Code:

sudo python sslstrip-0.9/sslstrip.py -f -l 8080 -w ssllog.log

now i have put in a few arguments into the command: -f -l -w
-f replaces the favicon with a lock (it wont put https though), -l specifies what port sslstrip is to listen on and -w tells it write everything to a specified file.

Spoiler (Click to View)

Now we want to see what sslstrip is writing into ssllog.log
open a new window and type this

Code:

sudo tail -F ssllog.log

Spoiler (Click to View)

The window should be blank since there is nothing currently in the file.

Im going to go over to my laptop and log into gmail and see if has worked.

If it has worked HTTPS in the URL bar should be replaced by HTTP. 95% of the time people will over look this.
I will also note that any https sessions than have existed before ssl strip was started will say encrypted.

Spoiler (Click to View)

Enter some random email and password and try sign in.

Spoiler (Click to View)

Now go back to your Linux machine and it should show up.

Spoiler (Click to View)

If all went well you should now have sniffed the email and password from gmail.
this will happen to any site with ssl. sslstrip may encounter an error on some sites but 99% of the time it will continue as normal.

Thank you for reading. if you need any help or have any problems feel free to post here, pm me or contact me on skype (skypename: iamtheobelisk)
Once again thank you and have a nice day HF.

This tutorial is for educational purposes only.