Kali-linux：nmap命令

概念

Nmap用于在远程机器上探测网络，执行安全扫描，网络审计和搜寻开放端口。它会扫描远程在线主机，该主机的操作系统，包过滤器和开放的端口。

使用场景

掌握了具体使用场景，主要就是掌握如下参数使用：以192.168.31.18为目标靶机

1.普通扫描

root@sunjin:/home/sunjin# nmap 192.168.31.18
Starting Nmap 7.80 ( https://nmap.org ) at 2020-11-06 09:46 CST
Nmap scan report for 192.168.31.18
Host is up (0.0014s latency).
Not shown: 996 closed ports
PORT     STATE SERVICE
22/tcp   open  ssh
443/tcp  open  https
3306/tcp open  mysql
8089/tcp open  unknownNmap done: 1 IP address (1 host up) scanned in 0.21 seconds

通过添加-sV参数，能够得到服务版本信息，

root@sunjin:/home/sunjin# nmap -sV 192.168.31.18
Starting Nmap 7.80 ( https://nmap.org ) at 2020-11-06 09:48 CST
Nmap scan report for 192.168.31.18
Host is up (0.0012s latency).
Not shown: 996 closed ports
PORT     STATE SERVICE   VERSION
22/tcp   open  ssh       OpenSSH 7.4 (protocol 2.0)
443/tcp  open  ssl/https
3306/tcp open  mysql     MySQL 5.7.32
8089/tcp open  unknown
2 services unrecognized despite returning data. If you know the service/version, please submit the following fingerprints at https://nmap.org/cgi-bin/submit.cgi?new-service :
==============NEXT SERVICE FINGERPRINT (SUBMIT INDIVIDUALLY)==============
SF-Port443-TCP:V=7.80%T=SSL%I=7%D=11/6%Time=5FA4AB6E%P=x86_64-pc-linux-gnu
SF:%r(GetRequest,DE,"HTTP/1\.1\x20302\x20\r\nCache-Control:\x20private\r\n
SF:Expires:\x20Thu,\x2001\x20Jan\x201970\x2000:00:00\x20GMT\r\nLocation:\x
SF:20https://localhost/index2\.html\r\nContent-Language:\x20zh-CN\r\nConte
SF:nt-Length:\x200\r\nDate:\x20Fri,\x2006\x20Nov\x202020\x2001:48:26\x20GM
SF:T\r\nConnection:\x20close\r\n\r\n")%r(HTTPOptions,B8,"HTTP/1\.1\x20200\
SF:x20\r\nCache-Control:\x20private\r\nExpires:\x20Thu,\x2001\x20Jan\x2019
SF:70\x2000:00:00\x20GMT\r\nAllow:\x20GET,HEAD,POST,PUT,PATCH,DELETE,OPTIO
SF:NS\r\nDate:\x20Fri,\x2006\x20Nov\x202020\x2001:48:26\x20GMT\r\nConnecti
SF:on:\x20close\r\n\r\n")%r(FourOhFourRequest,113,"HTTP/1\.1\x20302\x20\r\
SF:nCache-Control:\x20private\r\nExpires:\x20Thu,\x2001\x20Jan\x201970\x20
……

通过添加-sC参数，能够得到更加详细的服务信息

root@sunjin:/home/sunjin# nmap -sC 192.168.31.18
Starting Nmap 7.80 ( https://nmap.org ) at 2020-11-06 09:50 CST
Nmap scan report for 192.168.31.18
Host is up (0.0012s latency).
Not shown: 996 closed ports
PORT     STATE SERVICE
22/tcp   open  ssh
| ssh-hostkey:
|   2048 8e:45:b1:49:8e:4b:80:a7:cc:f0:ba:6c:be:a1:97:a1 (RSA)
|   256 2d:13:df:d4:9e:87:50:e8:db:fe:1c:f4:8a:7e:4c:6c (ECDSA)
|_  256 16:54:fd:53:27:c6:61:4f:76:f9:85:79:97:2b:0c:c5 (ED25519)
443/tcp  open  https
| http-methods:
|_  Potentially risky methods: PUT PATCH DELETE
| http-title: \xE5\xB7\xA5\xE4\xB8\x9A\xE4\xBA\x92\xE8\x81\x94\xE7\xBD\x91\xE8\xAE\xA4\xE8\xAF\x81\xE7\xBD\x91\xE5\x85\xB3\xE7\xAE\xA1\xE7\x90\x86\xE7\xB3\xBB\xE7\xBB\x9F
|_Requested resource was /login.html
| ssl-cert: Subject: commonName=192.168.31.111/organizationName=demo/countryName=cn
| Not valid before: 2020-10-13T03:14:26
|_Not valid after:  2021-10-13T03:14:26
|_ssl-date: 2020-11-06T01:50:37+00:00; -4s from scanner time.
3306/tcp open  mysql
| mysql-info:
|   Protocol: 10
|   Version: 5.7.32
|   Thread ID: 13
|   Capabilities flags: 65535
|   Some Capabilities: SupportsLoadDataLocal, LongPassword, IgnoreSpaceBeforeParenthesis, SwitchToSSLAfterHandshake, DontAllowDatabaseTableColumn, IgnoreSigpipes, SupportsTransactions, Speaks41ProtocolOld, Speaks41ProtocolNew, InteractiveClient, ConnectWithDatabase, Support41Auth, ODBCClient, SupportsCompression, FoundRows, LongColumnFlag, SupportsMultipleStatments, SupportsMultipleResults, SupportsAuthPlugins
|   Status: Autocommit
|   Salt: 9B|\x7F \x04,[\x03^Y\x05\x0E]x\x14\x0C\x0C\x19v
|_  Auth Plugin Name: mysql_native_password
8089/tcp open  unknownHost script results:
|_clock-skew: -4sNmap done: 1 IP address (1 host up) scanned in 1.74 seconds

2.漏洞扫描

#使用nmap对某主机进行一系列的证书鉴权检查
nmap --script=auth [目标IP]

root@sunjin:/home/sunjin# nmap --script=auth 192.168.31.18
Starting Nmap 7.80 ( https://nmap.org ) at 2020-11-06 09:57 CST
Nmap scan report for 192.168.31.18
Host is up (0.0014s latency).
Not shown: 996 closed ports
PORT     STATE SERVICE
22/tcp   open  ssh
| ssh-auth-methods:
|   Supported authentication methods:
|     publickey
|     gssapi-keyex
|     gssapi-with-mic
|_    password
| ssh-publickey-acceptance:
|_  Accepted Public Keys: No public keys accepted
443/tcp  open  https
|_http-config-backup: ERROR: Script execution failed (use -d to debug)
| http-vuln-cve2010-0738:
|_  /jmx-console/: Authentication was not required
3306/tcp open  mysql
8089/tcp open  unknownNmap done: 1 IP address (1 host up) scanned in 5.31 seconds

#使用nmap 对常见的服务进行暴力力破解
nmap --script=brute [目标IP]
可以看到有不少密码被破译出来了!

root@sunjin:/home/sunjin# nmap --script=brute 192.168.31.18
Starting Nmap 7.80 ( https://nmap.org ) at 2020-11-06 09:59 CST
Nmap scan report for 192.168.31.18
Host is up (0.0011s latency).
Not shown: 996 closed ports
PORT     STATE SERVICE
22/tcp   open  ssh
| ssh-brute:
|   Accounts: No valid accounts found
|   Statistics: Performed 0 guesses in 1 seconds, average tps: 0.0
|_  ERROR: The service seems to have failed or is heavily firewalled...
443/tcp  open  https
|_citrix-brute-xml: FAILED: No domain specified (use ntdomain argument)
| http-brute:
|_  Path "/" does not require authentication
|_http-joomla-brute: ERROR: Script execution failed (use -d to debug)
| http-wordpress-brute:
|   Accounts:
|     root:root - Valid credentials
|     netadmin:netadmin - Valid credentials
|     guest:guest - Valid credentials
|     user:user - Valid credentials
|     web:web - Valid credentials
|     sysadmin:sysadmin - Valid credentials
|     administrator:administrator - Valid credentials
|     webadmin:webadmin - Valid credentials
|     admin:admin - Valid credentials
|     test:test - Valid credentials
|_  Statistics: Performed 13 guesses in 1 seconds, average tps: 13.0
3306/tcp open  mysql
| mysql-brute:
|   Accounts:
|     root:123456 - Valid credentials
|_  Statistics: Performed 45012 guesses in 317 seconds, average tps: 191.2
| mysql-enum:
|   Valid usernames:
|     root:<empty> - Valid credentials
|     netadmin:<empty> - Valid credentials
|     guest:<empty> - Valid credentials
|     user:<empty> - Valid credentials
|     web:<empty> - Valid credentials
|     sysadmin:<empty> - Valid credentials
|     administrator:<empty> - Valid credentials
|     webadmin:<empty> - Valid credentials
|     admin:<empty> - Valid credentials
|     test:<empty> - Valid credentials
|_  Statistics: Performed 10 guesses in 1 seconds, average tps: 10.0
8089/tcp open  unknownNmap done: 1 IP address (1 host up) scanned in 317.33 seconds

#使用nmap 进行基本的扫描
nmap --script=default [目标IP]
这个和普通扫描结果差不多

#使用nmap 进行信息挖掘
nmap --script=discovery [目标IP]
这个会显示大量服务消息，例如TLS的加密算法类型

#使用nmap 进行拒绝服务攻击
nmap --script=dos [目标IP]
这个没有测试，毕竟是公共服务器

#使用nmap 利用已知的漏洞入侵系统
nmap --script=exploit [目标IP]
#使用nmap 进行利用第三方的数据库或资源进行信息收集或者攻击
nmap --script=external [目标IP]
这个没有测试，毕竟是公共服务器

#使用nmap 进行模糊测试，发送异常的包到目标机，探测出潜在漏洞
nmap --script=fuzzer [目标IP]
#使用nmap 进行入侵，此类脚本可能引发对方的IDS/IPS的记录或屏蔽
nmap --script=intrusive [目标IP]
这个没有测试，毕竟是公共服务器

#使用nmap 探测目标机是否感染了病毒、开启了后门等信息
nmap --script=malware [目标IP]

root@sunjin:/home/sunjin# nmap --script=malware 192.168.31.18
Starting Nmap 7.80 ( https://nmap.org ) at 2020-11-06 13:50 CST
Nmap scan report for 192.168.31.18
Host is up (0.0011s latency).
Not shown: 996 closed ports
PORT     STATE SERVICE
22/tcp   open  ssh
443/tcp  open  https
3306/tcp open  mysql
8089/tcp open  unknownNmap done: 1 IP address (1 host up) scanned in 0.43 seconds

#使用nmap 对系统进行安全检查
nmap --script=safe [目标IP]
这个结果比较长，可以自行测试

#使用nmap 对目标机进行检查是否存在常见的漏洞
nmap --script=vuln [目标IP]

root@sunjin:/home/sunjin# nmap --script=vuln 192.168.31.18
Starting Nmap 7.80 ( https://nmap.org ) at 2020-11-06 13:47 CST
Pre-scan script results:
| broadcast-avahi-dos:
|   Discovered hosts:
|     224.0.0.251
|   After NULL UDP avahi packet DoS (CVE-2011-1002).
|_  Hosts are all up (not vulnerable).
Nmap scan report for 192.168.31.18
Host is up (0.0012s latency).
Not shown: 996 closed ports
PORT     STATE SERVICE
22/tcp   open  ssh
|_clamav-exec: ERROR: Script execution failed (use -d to debug)
443/tcp  open  https
|_clamav-exec: ERROR: Script execution failed (use -d to debug)
|_http-csrf: Couldn't find any CSRF vulnerabilities.
|_http-dombased-xss: Couldn't find any DOM based XSS.
| http-enum:
|   /login.html: Possible admin folder
|   /examples/: Sample scripts
|_  /docs/: Potentially interesting folder
|_http-majordomo2-dir-traversal: ERROR: Script execution failed (use -d to debug)
|_http-stored-xss: Couldn't find any stored XSS vulnerabilities.
| http-vuln-cve2010-0738:
|_  /jmx-console/: Authentication was not required
|_http-vuln-cve2017-1001000: ERROR: Script execution failed (use -d to debug)
|_sslv2-drown:
3306/tcp open  mysql
|_clamav-exec: ERROR: Script execution failed (use -d to debug)
8089/tcp open  unknown
|_clamav-exec: ERROR: Script execution failed (use -d to debug)Nmap done: 1 IP address (1 host up) scanned in 137.77 seconds