What Does reDuh Do?
reDuh is actually a tool that can be used to create a TCP circuit through validly formed HTTP requests.
Essentially this means that if we can upload a JSP/PHP/ASP page on a server, we can connect to hosts behind that server trivially
What is it for?
a) Bob.Hacker has the ability to upload / create a JSP page on the remote server
b) Bob.Hacker wishes to make an RDP connection to the server term-serv.victim.com (visible to the web-server behind the firewall)
c) The firewall permits HTTP traffic to the webserver but denies everything else
d) Bob.Hacker uploads reDuh.jsp to http://example.xom/uploads/reDuh.jsp
e) Bob.Hacker runs reDuhClient on his machine and points it to the page: $ java reDuhClient ubuntoo.victim.com 80 /uploads/reDuh.jsp
f) Bob.Hacker administers reDuhClient by connecting to its management port (1010 by default)
g) Once connected, Bob.Hacker types: [createTunnel]1234:term-serv.victim.com:3389
h) Now Bob.Hacker launches his RDP client, and aims it at localhost:1234
reDuhClient and reDuh.jsp will happily shunt TCP until they are killed..
The system can handle multiple connections, so while RDP is running, we can use the management connection (on port 1010) again, and request [createTunnel]5555:sshd.victim.com:22
Bob.Hacker can now ssh to localhost on port 5555 to access the sshd on sshd.victim.com (while still running his RDP session)
You can download reDuh here:
Download reDuhClient (the local proxy)
Download reDuhu Server Pages (JSP/PHP/ASP)
Or read more here.
aol says
excellent tool – thank you
dave says
wow, fantastic tool…
sun says
not working..
./java reDuhClient ipaddress/reDuh.aspx
Usage: java reDuhClient <linkToReDuh.jsp
e.g java reDuhClient http://www.compromised.com 80 /secretDirectory/reDuh.jsp
what’s wrong ?
DG says
You can’t have “http://” in your IP address
java reDuhClient http://www.compromised.com 80 /secretDirectory/reDuh.jsp
Gilberto says
hahaha nice t00l…
glenn says
…and I hear the author’s pretty good looking too ;)
SpikyHead says
Nice piece of code.. great work
Nikola says
@sub, usage goes
java reDuhClient http://www.compromised.com 80 /dir/reDuh.jsp
You shouldn’t type in protocol. Additionally, aspx version doesn’t work, it needs to implement another function. I’ve sent fixed one to reDuh guys but got no reply yet.
Nikola says
@sun, I see now that CMS adds protocol :) Sorry
lowkey says
Are you not assuming the presence of a jvm and servlet runer on the compromised box?