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61 lines
2.2 KiB
Markdown
61 lines
2.2 KiB
Markdown
# 43 - Pentesting WHOIS
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{{#include ../banners/hacktricks-training.md}}
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## Basic Information
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The **WHOIS** protocol serves as a standard method for **inquiring about the registrants or holders of various Internet resources** through specific databases. These resources encompass domain names, blocks of IP addresses, and autonomous systems, among others. Beyond these, the protocol finds application in accessing a broader spectrum of information.
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**Default port:** 43
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```
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PORT STATE SERVICE
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43/tcp open whois?
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```
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## Enumerate
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Get all the information that a whois service has about a domain:
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```bash
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whois -h <HOST> -p <PORT> "domain.tld"
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echo "domain.ltd" | nc -vn <HOST> <PORT>
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```
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Notice than sometimes when requesting for some information to a WHOIS service the database being used appears in the response:
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.png>)
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Also, the WHOIS service always needs to use a **database** to store and extract the information. So, a possible **SQLInjection** could be present when **querying** the database from some information provided by the user. For example doing: `whois -h 10.10.10.155 -p 43 "a') or 1=1#"` you could be able to **extract all** the **information** saved in the database.
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## Shodan
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- `port:43 whois`
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## HackTricks Automatic Commands
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```
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Protocol_Name: WHOIS #Protocol Abbreviation if there is one.
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Port_Number: 43 #Comma separated if there is more than one.
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Protocol_Description: WHOIS #Protocol Abbreviation Spelled out
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Entry_1:
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Name: Notes
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Description: Notes for WHOIS
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Note: |
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The WHOIS protocol serves as a standard method for inquiring about the registrants or holders of various Internet resources through specific databases. These resources encompass domain names, blocks of IP addresses, and autonomous systems, among others. Beyond these, the protocol finds application in accessing a broader spectrum of information.
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https://book.hacktricks.wiki/en/network-services-pentesting/pentesting-smtp/index.html
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Entry_2:
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Name: Banner Grab
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Description: Grab WHOIS Banner
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Command: whois -h {IP} -p 43 {Domain_Name} && echo {Domain_Name} | nc -vn {IP} 43
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```
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{{#include ../banners/hacktricks-training.md}}
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