计算机网络实用工具之nbtscan

简介

nbscan是一个用于扫描IP网络的NetBIOS名称信息的程序。它向提供范围内的每个地址发送NetBIOS状态查询，并以人类可读的形式列出接收到的信息。对于每个响应的主机，它列出了IP地址、NetBIOS计算机名、登录用户名和MAC地址。

对于安全检查、网络发现和取证调查非常有用。

官网

GitHub - resurrecting-open-source-projects/nbtscan: Scan networks searching for NetBIOS information

安装

# ubuntu 22.04
sudo apt install nbtscan

使用帮助

ubuntu:~$ nbtscan -h
"Human-readable service names" (-h) option cannot be used without verbose (-v) option.
Usage:
nbtscan [-v] [-d] [-e] [-l] [-t timeout] [-b bandwidth] [-r] [-q] [-s separator] [-m retransmits] (-f filename)|(<scan_range>)
        -v              verbose output. Print all names received
                        from each host
        -d              dump packets. Print whole packet contents.
        -e              Format output in /etc/hosts format.
        -l              Format output in lmhosts format.
                        Cannot be used with -v, -s or -h options.
        -t timeout      wait timeout milliseconds for response.
                        Default 1000.
        -b bandwidth    Output throttling. Slow down output
                        so that it uses no more that bandwidth bps.
                        Useful on slow links, so that ougoing queries
                        don't get dropped.
        -r              use local port 137 for scans. Win95 boxes
                        respond to this only.
                        You need to be root to use this option on Unix.
        -q              Suppress banners and error messages,
        -s separator    Script-friendly output. Don't print
                        column and record headers, separate fields with separator.
        -h              Print human-readable names for services.
                        Can only be used with -v option.
        -m retransmits  Number of retransmits. Default 0.
        -f filename     Take IP addresses to scan from file filename.
                        -f - makes nbtscan take IP addresses from stdin.
        <scan_range>    what to scan. Can either be single IP
                        like 192.168.1.1 or
                        range of addresses in one of two forms:
                        xxx.xxx.xxx.xxx/xx or xxx.xxx.xxx.xxx-xxx.
Examples:
        nbtscan -r 192.168.1.0/24
                Scans the whole C-class network.
        nbtscan 192.168.1.25-137
                Scans a range from 192.168.1.25 to 192.168.1.137
        nbtscan -v -s : 192.168.1.0/24
                Scans C-class network. Prints results in script-friendly
                format using colon as field separator.
                Produces output like that:
                192.168.0.1:NT_SERVER:00U
                192.168.0.1:MY_DOMAIN:00G
                192.168.0.1:ADMINISTRATOR:03U
                192.168.0.2:OTHER_BOX:00U
                ...
        nbtscan -f iplist
                Scans IP addresses specified in file iplist.

使用示例

root@ubuntu:~# nbtscan 192.168.21.1
Doing NBT name scan for addresses from 192.168.21.1

IP address       NetBIOS Name     Server    User             MAC address      
------------------------------------------------------------------------------
192.168.21.1     DESKTOP-EPH9F2T  <server>  <unknown>        00:50:56:c0:00:08

在上述示例中，ubuntu主机的ip为192.168.21.132，目标主机192.168.21.1为一台windows主机

通过在192.168.21.1的windows主机上抓包可以发现，ubuntu主机向windows主机发送了一个访问137(UDP)端口的名称查询请求