Nmap

Network exploration tool and security / port scanner.

Installation

git clone https://github.com/nmap/nmap.git
cd nmap
sudo ./configure
sudo make
sudo make install

Usage

nmap [Scan Type(s)] [Options] {target specification}

Flags

Nmap 7.80SVN ( https://nmap.org )
Usage: nmap [Scan Type(s)] [Options] {target specification}
TARGET SPECIFICATION:
  Can pass hostnames, IP addresses, networks, etc.
  Ex: scanme.nmap.org, microsoft.com/24, 192.168.0.1; 10.0.0-255.1-254
  -iL <inputfilename>: Input from list of hosts/networks
  -iR <num hosts>: Choose random targets
  --exclude <host1[,host2][,host3],...>: Exclude hosts/networks
  --excludefile <exclude_file>: Exclude list from file
HOST DISCOVERY:
  -sL: List Scan - simply list targets to scan
  -sn: Ping Scan - disable port scan
  -Pn: Treat all hosts as online -- skip host discovery
  -PS/PA/PU/PY[portlist]: TCP SYN/ACK, UDP or SCTP discovery to given ports
  -PE/PP/PM: ICMP echo, timestamp, and netmask request discovery probes
  -PO[protocol list]: IP Protocol Ping
  -n/-R: Never do DNS resolution/Always resolve [default: sometimes]
  --dns-servers <serv1[,serv2],...>: Specify custom DNS servers
  --system-dns: Use OS's DNS resolver
  --traceroute: Trace hop path to each host
SCAN TECHNIQUES:
  -sS/sT/sA/sW/sM: TCP SYN/Connect()/ACK/Window/Maimon scans
  -sU: UDP Scan
  -sN/sF/sX: TCP Null, FIN, and Xmas scans
  --scanflags <flags>: Customize TCP scan flags
  -sI <zombie host[:probeport]>: Idle scan
  -sY/sZ: SCTP INIT/COOKIE-ECHO scans
  -sO: IP protocol scan
  -b <FTP relay host>: FTP bounce scan
PORT SPECIFICATION AND SCAN ORDER:
  -p <port ranges>: Only scan specified ports
    Ex: -p22; -p1-65535; -p U:53,111,137,T:21-25,80,139,8080,S:9
  --exclude-ports <port ranges>: Exclude the specified ports from scanning
  -F: Fast mode - Scan fewer ports than the default scan
  -r: Scan ports consecutively - don't randomize
  --top-ports <number>: Scan <number> most common ports
  --port-ratio <ratio>: Scan ports more common than <ratio>
SERVICE/VERSION DETECTION:
  -sV: Probe open ports to determine service/version info
  --version-intensity <level>: Set from 0 (light) to 9 (try all probes)
  --version-light: Limit to most likely probes (intensity 2)
  --version-all: Try every single probe (intensity 9)
  --version-trace: Show detailed version scan activity (for debugging)
SCRIPT SCAN:
  -sC: equivalent to --script=default
  --script=<Lua scripts>: <Lua scripts> is a comma separated list of
           directories, script-files or script-categories
  --script-args=<n1=v1,[n2=v2,...]>: provide arguments to scripts
  --script-args-file=filename: provide NSE script args in a file
  --script-trace: Show all data sent and received
  --script-updatedb: Update the script database.
  --script-help=<Lua scripts>: Show help about scripts.
           <Lua scripts> is a comma-separated list of script-files or
           script-categories.
OS DETECTION:
  -O: Enable OS detection
  --osscan-limit: Limit OS detection to promising targets
  --osscan-guess: Guess OS more aggressively
TIMING AND PERFORMANCE:
  Options which take <time> are in seconds, or append 'ms' (milliseconds),
  's' (seconds), 'm' (minutes), or 'h' (hours) to the value (e.g. 30m).
  -T<0-5>: Set timing template (higher is faster)
  --min-hostgroup/max-hostgroup <size>: Parallel host scan group sizes
  --min-parallelism/max-parallelism <numprobes>: Probe parallelization
  --min-rtt-timeout/max-rtt-timeout/initial-rtt-timeout <time>: Specifies
      probe round trip time.
  --max-retries <tries>: Caps number of port scan probe retransmissions.
  --host-timeout <time>: Give up on target after this long
  --scan-delay/--max-scan-delay <time>: Adjust delay between probes
  --min-rate <number>: Send packets no slower than <number> per second
  --max-rate <number>: Send packets no faster than <number> per second
FIREWALL/IDS EVASION AND SPOOFING:
  -f; --mtu <val>: fragment packets (optionally w/given MTU)
  -D <decoy1,decoy2[,ME],...>: Cloak a scan with decoys
  -S <IP_Address>: Spoof source address
  -e <iface>: Use specified interface
  -g/--source-port <portnum>: Use given port number
  --proxies <url1,[url2],...>: Relay connections through HTTP/SOCKS4 proxies
  --data <hex string>: Append a custom payload to sent packets
  --data-string <string>: Append a custom ASCII string to sent packets
  --data-length <num>: Append random data to sent packets
  --ip-options <options>: Send packets with specified ip options
  --ttl <val>: Set IP time-to-live field
  --spoof-mac <mac address/prefix/vendor name>: Spoof your MAC address
  --badsum: Send packets with a bogus TCP/UDP/SCTP checksum
OUTPUT:
  -oN/-oX/-oS/-oG <file>: Output scan in normal, XML, s|<rIpt kIddi3,
     and Grepable format, respectively, to the given filename.
  -oA <basename>: Output in the three major formats at once
  -v: Increase verbosity level (use -vv or more for greater effect)
  -d: Increase debugging level (use -dd or more for greater effect)
  --reason: Display the reason a port is in a particular state
  --open: Only show open (or possibly open) ports
  --packet-trace: Show all packets sent and received
  --iflist: Print host interfaces and routes (for debugging)
  --append-output: Append to rather than clobber specified output files
  --resume <filename>: Resume an aborted scan
  --stylesheet <path/URL>: XSL stylesheet to transform XML output to HTML
  --webxml: Reference stylesheet from Nmap.Org for more portable XML
  --no-stylesheet: Prevent associating of XSL stylesheet w/XML output
MISC:
  -6: Enable IPv6 scanning
  -A: Enable OS detection, version detection, script scanning, and traceroute
  --datadir <dirname>: Specify custom Nmap data file location
  --send-eth/--send-ip: Send using raw ethernet frames or IP packets
  --privileged: Assume that the user is fully privileged
  --unprivileged: Assume the user lacks raw socket privileges
  -V: Print version number
  -h: Print this help summary page.
EXAMPLES:
  nmap -v -A scanme.nmap.org
  nmap -v -sn 192.168.0.0/16 10.0.0.0/8
  nmap -v -iR 10000 -Pn -p 80
SEE THE MAN PAGE (https://nmap.org/book/man.html) FOR MORE OPTIONS AND EXAMPLES

Examples

Scan ports on target system

nmap <target>

Scan specific port on target

nmap -p <port> <target>

Scan all ports on target

nmap -p- <target>

Specific scan scripts

Dynamic DNS server record injection

sudo nmap -sU -p 53 --script=dns-update --script-args=dns-update.hostname=<subdomain>.<client-domain>,dns-update.ip=192.0.2.1 <target>

To manualy validate with dig use

Add record
    sudo nmap -sU -p 53 --script=dns-update-add --script-args=dns-update.hostname=<subdomain>.<client-domain>,dns-update.ip=192.0.2.1 <target>

dig @<target> <subdomain>.<client-domain>

Delete record
    sudo nmap -sU -p 53 --script=dns-update-delete --script-args=dns-update.hostname=<subdomain>.<client-domain>,dns-update.ip=192.0.2.1 <target>

FTP Anonymous login

nmap -p21 -oA ftp_test --script ftp-anon <target>

MS17-010 Eternalblue

nmap -p445 --script smb-vuln-ms17-010 --open -Pn <target>

RDP Security

nmap -p3389 --script rdp-enum-encryption <target>

rsync list modules

nmap -p873 --script rsync-list-modules <target>
nmap -p873 --script rsync-list-modules <target>

PORT    STATE SERVICE
873/tcp open  rsync
| rsync-list-modules:
|   www            www directory
|   log            log directory
|_  etc            etc directory

SMB signing

nmap -p445 --script smb-security-mode <target>

SMBv2 signing

nmap -p445 --script smb2-security-mode <target>

SMB security + protocols

nmap -p445 --script smb-security-mode,smb-protocols <target>

SMB OS Discovery

nmap -p445 --script smb-os-discovery <target>

SMB share enumeration

nmap -p445 --script=smb-enum-shares.nse,smb-enum-users.nse <target>

IIS Tilde

nmap -p80,443 --script http-iis-short-name-brute <target>

NTLM challenger

nmap --script http-ntlm-info <target>

SSH hostkey reuse

nmap -p22 --script ssh-hostkey <target>

MS-SQL version

nmap -p1433 --script ms-sql-info,ms-sql-ntlm-info <target>

SSH authentication methods

nmap -p22 --script ssh-auth-methods <target>

TFTP enum

sudo nmap -p69 -sU -Pn --script tftp-enum <target>

VNC authentication

nmap -Pn -p5900 --script vnc-info <target>

Vmware ESXi version

nmap -p443 --script vmware-version <target>

NTP information

nmap -sU -p 123 --script ntp-info <target>

SMTP

Commands supported.

nmap --script smtp-commands.nse [--script-args smtp-commands.domain=<domain>] -pT:25,465,587 <host>

Open Relay checking.

nmap --script smtp-open-relay.nse [--script-args smtp-open-relay.domain=<domain>,smtp-open-relay.ip=<address>,...] -p 25,465,587 <host>

LDAP anonymous bind

nmap -p 389 --script ldap-search --script-args 'ldap.qfilter=users,ldap.attrib=sAMAccountName' <target>

Modbus protocol

nmap -p502 --script modbus-discover <target>

XMPP

nmap -p5222 --script xmpp-info <target>

AMQP

nmap -p5672 --script amqp-info <target>

WinRM detection

Github.com - winRM.nse

nmap -p5985 -Pn -n -sV -v --script=winrm.nse <target>

MSRPC

nmap -Pn --script=msrpc-enum

Elasticsearch NSE

NSE script for enumerating indices, plugins and cluster nodes on an elasticsearch target

Github.com - nmap-elasticsearch.nse

git clone https://github.com/theMiddleBlue/nmap-elasticsearch-nse.git
cp nmap-elasticsearch-nse/elasticsearch.nse /usr/share/nmap/scripts/
nmap --script=elasticsearch <target>

X11 access check

nmap -p6000 --script x11-access <target>

DNS Server Zone Transfer Information Disclosure (AXFR)

nmap -p53 --script dns-zone-transfer <target>

Check for vulnerabilities

nmap --script vuln <target>

Scripts location

/usr/share/nmap/scripts

URL list