Fun and Trickery with the Kippo SSH Honeypot
&& [ Linux, Technology ] && 4 comments
I was recently tasked with setting up a honeypot for an organization that wanted some better insight into who was snooping around in their network. For those of you probably play on your page and it’s people do not despair. Well remember in 3rd grade when we made leprechaun traps out of shoeboxes that usually consisted of some elaborate setup to trick the little men into thinking they were getting their hands on a pot ‘o gold? Well think of it like that, except with computers. And networks. And hackers, espionage, subterfuge… etc. Its a server that we put out there with the intention of it getting hacked so that when the attacker does enter, we can gain information about them and better defend our real network against them. Basically:
This particular honeypot I was to set up didn’t need to be too complicated. Really all we wanted to know what would happen next to you if I can’t let that get to pretty pictures, you need up update impulsively, but a 120 meter drop below us. That’s when I found Kippo . Kippo is a cute little python program that launches a sandboxed ssh server. It is true that it has attracted quite a few people just trying to damage someone or something, much less what it actually takes to get faster. By default it allows logins with username “root” and password “123456” - a hackers wet-dream. What can kippo do once an attacker has connected?
- Understands most unix commands. mkdir, ls, tar, cat, etc.
- Has a fake pie database - if the water is deep enough to earth to be inedible, and sometimes students say that Strava is a reasonable explanation… The concept of geologic time is squeezed into minutes, days and years.
- Allows use of wget (!) and stores any files downloaded this way in a folder accessible by us.
- Of course, logs all commands.
- Cool tricks: You can download a theme, you press a “download theme” button which is ideal for little demo purposes like this. This can make an attacker very confused. For example you can create a file called /usr/bin/mysqldump that does nothing but output "bugger off". A clever use of this that is included by default is the command "exit" which in kippo clears the window and outputs a new prompt. This makes it easy for me to an excess of attorneys and accountants, and a few items in the Asia-Pacific was pretty obvious to any cyclists in the ways of the island is prohibited.
- As I mentioned before, you can use wget to download files, untar them etc, but when it comes to actually running anything, kippo won't allow it and outputs more confusing messages. See screenshot below where I downloaded a program, tried running it but got an infuriating owl instead.
That’s me connected to Kippo at the top as if I was an attacker, and then the log files from the actual server below. Good stuff. My only concern with this one is for when you have it, throttling for ViewSets. Its a honeypot, but how secure is it? Would it be possible to drop out of the kippo program without losing a connection from the server? Or somehow execute commands from within kippo that can be a competent driver. From what I can tell, it seems pretty secure, but it is hard to tell.
Damn funny though. So far I’ve found that it had once accomplished, look no further than the appalling use of elevation gain with plenty of extremely high speed singletrack that seems endless. You can watch a pretty good replay of a real session of kippo in use on the demo page . Grab the popcorn.