Nmap resolveall NSE Script

Script Overview

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Script source code: https://github.com/nmap/nmap/tree/master/scripts/resolveall.nse
Script categories: safe, discovery
Target service / protocol: -
Target network port(s): -
List of CVEs: -

Script Description

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NOTE: This script has been replaced by the --resolve-all command-line option in Nmap 7.70

Resolves hostnames and adds every address (IPv4 or IPv6, depending on Nmap mode) to Nmap's target list. This differs from Nmap's normal host resolution process, which only scans the first address (A or AAAA record) returned for each host name.

The script will run on any target provided by hostname. It can also be fed hostnames via the resolveall.hosts argument. Because it adds new targets by IP address it will not run recursively, since those new targets were not provided by hostname. It will also not add the same IP that was initially chosen for scanning by Nmap.

Resolveall NSE Script Arguments

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This is a full list of arguments supported by the resolveall.nse script:

resolveall.hosts

Table of hostnames to resolve

max-newtargets

Sets the number of the maximum allowed new targets. If set to 0 or less then there is no limit. The default value is 0.

newtargets

If specified, lets NSE scripts add new targets.

- - -
To use these script arguments, add them to the Nmap command line using the --script-args arg1=value,[arg2=value,..] syntax. For example:

nmap --script=resolveall --script-args resolveall.hosts=value,max-newtargets=value <target>

Resolveall NSE Script Example Usage

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Here's an example of how to use the resolveall.nse script:

nmap --script=resolveall --script-args=newtargets,resolveall.hosts={<host1>, ...} ...

nmap --script=resolveall manyaddresses.example.com

Resolveall NSE Script Example Output

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Here's a sample output from the resolveall.nse script:

Pre-scan script results:
| resolveall:
|   Host 'google.com' resolves to:
|     74.125.39.106
|     74.125.39.147
|     74.125.39.99
|     74.125.39.103
|     74.125.39.105
|     74.125.39.104
|_  Successfully added 6 new targets
Host script results:
| resolveall:
|   Host 'chat.freenode.net' also resolves to:
|     94.125.182.252
|     185.30.166.37
|     162.213.39.42
|     193.10.255.100
|     139.162.227.51
|     195.154.200.232
|     164.132.77.237
|     185.30.166.38
|     130.185.232.126
|     38.229.70.22
|_  Successfully added 10 new targets

Resolveall NSE Script Example XML Output

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Here's a sample XML output from the resolveall.nse script produced by providing the -oX <file> Nmap option:

 <elem key="newtargets">4</elem>
 <table key="hosts">
   <table key="google.com">
     <elem>74.125.39.106</elem>
     <elem>74.125.39.147</elem>
     <elem>74.125.39.99</elem>
     <elem>74.125.39.103</elem>
   </table>
 </table>

Author

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• Kris Katterjohn

References

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• https://nmap.org/nsedoc/scripts/resolveall.html
• https://github.com/nmap/nmap/tree/master/scripts/resolveall.nse

See Also

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Visit Nmap NSE Library for more scripts.