Enum4linux: SMB & Samba Enumeration

OS

Linux

Website

https://github.com/portcullislabs/enum4linux

Reference Walk-Throughs

HackTheBox

Lame

VulnHub

Kioptrix Level 1

What is enum4linux?

The enum4linux tool allows you to enumerate information from Windows and Samba systems. Written in Perl, it is basically a wrapper around a number of other utilities, providing a unified, simplified script capable of collecting a significant amount of information.

How does it work?

This utility relies heavily on null sessions, which are anonymous connections to inter-process communication services on the target system. Using null sessions, as well as a few other techniques, the enum4linux utility can extract information including (but not limited to) hardware information, OS information, usernames, password policies, open ports, and shared printers and filesystems.

Using enum4linux

Note

To run most effectively, enum4linux requires root privileges, so it’s best to run this tool via sudo or as the root user.

To use enum4linux, simply type sudo enum4linux in the command line, followed by the necessary command-line arguments. At a minimum, enum4linux expects to be given the IP address of the system you intend to scan.

By default, if no additional command-line arguments are supplied, enum4linux assumes the -a flag, which automatically runs a robust set of enumeration techniques.