What Is SMB Enumeration?

by | Last updated on January 24, 2024

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SMB enumeration is a very important skill for any pentester. … SMB

stands for server message block

. It’s a protocol for sharing resources like files, printers, in general any resource which should be retreivable or made available by the server. It primarily runs on port 445 or port 139 depending on the server .

What tools do SMB enumeration use?

If you are testing a Windows environment, the easiest way to collect information about that environment is by using the Server Message Block (SMB) enumeration tool such as

nbtscan

. The nbtscan tool can be used to scan the IP addresses for the NetBIOS name information.

What is Enum4linux used for?

Enum4linux is

a tool for enumerating information from Windows and Samba systems

. It attempts to offer similar functionality to enum.exe formerly available from www.bindview.com. It is written in Perl and is basically a wrapper around the Samba tools smbclient, rpclient, net and nmblookup.

What is SMB in Kali?

SMBMap allows

users to enumerate samba share drives across an entire domain

. List share drives, drive permissions, share contents, upload/download functionality, file name auto-download pattern matching, and even execute remote commands.

What is the SMB protocol?

The Server Message Block (SMB) protocol is

a network file sharing protocol

that allows applications on a computer to read and write to files and to request services from server programs in a computer network. The SMB protocol can be used on top of its TCP/IP protocol or other network protocols.

Which tools are used for enumeration?

  • Nmap. Nmap usage. Scan from a file. Output formats.
  • Nikto. Usage.
  • Dirbuster.
  • Wpscan. Usage.
  • Dnsenum. Usage.

What is an enumeration tool?

Network enumeration is

the discovery of hosts or devices on a network

. … It may also scan various ports on remote hosts for looking for well known services in an attempt to further identify the function of a remote host. The next stage of enumeration is to fingerprint the operating system of the remote host.

What ports is SMB running on?

As such, SMB requires network ports on a computer or server to enable communication to other systems. SMB uses either

IP port 139 or 445

. Port 139: SMB originally ran on top of NetBIOS using port 139. NetBIOS is an older transport layer that allows Windows computers to talk to each other on the same network.

What tool will allow us to enumerate port 139 445?

We can use a tool called

enum4linux

to enumerate 139/445 ports.

What type of protocol is SMB Tryhackme?

The SMB protocol is known as

a response-request protocol

, meaning that it transmits multiple messages between the client and server to establish a connection. Clients connect to servers using TCP/IP (actually NetBIOS over TCP/IP as specified in RFC1001 and RFC1002), NetBEUI or IPX/SPX.

What is SMB username and password?

The SMB user ID is determined from the user ID the user specifies when logging on to Windows. This user ID is mapped to a z/OS® user ID, and the

password is taken

as the password for the z/OS user ID (when using clear passwords) or the user’s SMB password in their RACF® DCE segment (when using encrypted passwords).

How do I access SMB?

  1. Make sure that your Windows computer has one or several shared folders.
  2. Open Documents on your iPad or iPhone and tap the Plus button > Add Connection .
  3. Select Windows SMB server.
  4. Put your Windows machine’s IP address or local hostname into the URL field.

What is SMB Pentesting?

SMB enumeration is a very important skill for any pentester. … SMB

stands for server message block

. It’s a protocol for sharing resources like files, printers, in general any resource which should be retreivable or made available by the server.

Where is SMB used?

Over the years, SMB has been used primarily to

connect Windows computers

, although most other systems — such as Linux and macOS — also include client components for connecting to SMB resources. A group at IBM developed the SMB protocol in the 1980s.

What does SMB mean?


Small And Midsize Business

(SMB)

Which version of SMB is secure?

By default, AES-128-GCM is negotiated with

SMB 3.1. 1

, bringing the best balance of security and performance. Windows Server 2022 and Windows 11 SMB Direct now supports encryption. Previously, enabling SMB encryption disabled direct data placement, making RDMA performance as slow as TCP.

Ahmed Ali
Author
Ahmed Ali
Ahmed Ali is a financial analyst with over 15 years of experience in the finance industry. He has worked for major banks and investment firms, and has a wealth of knowledge on investing, real estate, and tax planning. Ahmed is also an advocate for financial literacy and education.