ctfutils software package provides FreeBSD CTF utilities, you can install in your Debian 9 (Stretch) by running the commands given below on the terminal,
$ sudo apt-get update $ sudo apt-get install ctfutils
ctfutils is installed in your system.
Make ensure the ctfutils package were installed using the commands given below,
$ sudo dpkg-query -l | grep ctfutils *
You will get with ctfutils package name, version, architecture and description in a table
| Distro | Debian 9 stretch |
| Section | Development |
| Package | ctfutils |
| Version | 9.2-5.1 |
| Description | FreeBSD CTF utilities |
| Sub Section | devel |