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63 lines
2.5 KiB
Markdown
63 lines
2.5 KiB
Markdown
# NMAP Cheat Sheet
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Base nmap Syntax:
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```
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nmap [ScanType] [Options] {targets}
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```
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If no port range is specified, Nmap scans the 1,000 most popular ports.
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```
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-F Scan 100 most popular ports
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-p <port1>-<port2> Port range
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-p <port1>,<port2>,... Port List
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-pU:53,U:110,T20-445 Mix TCP and UDP
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-r Scan linearly (do not randomize ports)
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--top-ports <n> Scan n most popular ports
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-p-65535 Leaving off initial port in range makes Nmap scan start at port 1
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-p0- Leaving off end port in range makes Nmap scan through p
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```
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## Nmap Scripting Engine
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The full list of Nmap Scripting Engine scripts: http://nmap.org/nsedoc/
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Some particularly useful scripts include:
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- dns-zone-transfer: Attempts to pull a zone file (AXFR) from a DNS server.
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```
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$ nmap --script dns-zonetransfer.nse --script-args dns-zonetransfer.domain=<domain> -p53 <hosts>
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```
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- http-robots.txt: Harvests robots.txt files from discovered web servers.
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```
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$ nmap --script http-robots.txt <hosts>
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```
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- smb-brute: Attempts to determine valid username and password combinations via automated guessing.
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```
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$ nmap --script smb-brute.nse -p445 <hosts>
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```
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- smb-psexec: Attempts to run a series of programs on the target machine, using credentials provided as scriptargs.
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```
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$ nmap --script smb-psexec.nse –script-args=smbuser=<username>,smbpass=<password>[,config=<config>] -p445 <hosts>
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```
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### Nmap Scripting Engine Categories
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The most common Nmap scripting engine categories:
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- auth: Utilize credentials or bypass authentication on target hosts.
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- broadcast: Discover hosts not included on command line by broadcasting on local network.
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- brute: Attempt to guess passwords on target systems, for a variety of protocols, including http, SNMP, IAX, MySQL, VNC, etc.
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- default: Scripts run automatically when -sC or -A are used.
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- discovery: Try to learn more information about target hosts through public sources of information, SNMP, directory services, and more.
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- dos: May cause denial of service conditions in target hosts.
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- exploit: Attempt to exploit target systems.
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- external: Interact with third-party systems not included in target list.
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- fuzzer: Send unexpected input in network protocol fields.
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- intrusive: May crash target, consume excessive resources, or otherwise impact target machines in a malicious fashion.
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- malware: Look for signs of malware infection on the target hosts.
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- safe: Designed not to impact target in a negative fashion.
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- version: Measure the version of software or protocols on the target hosts.
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- vul: Measure whether target systems have a known vulnerability.
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