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# 194,6667,6660-7000 - Pentesting IRC
## Basic Information
IRC was **originally a plain text protocol** (although later extended), which on request was assigned port **194/TCP by IANA**. However, the de facto standard has always been to **run IRC on 6667/TCP** and nearby port numbers (for example TCP ports 6660–6669, 7000) to **avoid** having to run the IRCd software with **root privileges**.
For connecting to a server it is required merely a **nickname**. Once connection is established, the first thing the server does is a reverse-dns to your ip:
It seems that overall **there are two kinds of users**: **operators** and ordinary **users**. For logging in as an **operator** it is required a **username** and a **password** (and in many occasions a particular hostname, ip and even a particular hostmask). Within operators there are different privilege levels wherein the administrator has the highest privilege.
**Default ports:** 194, 6667, 6660-7000
```
PORT STATE SERVICE
6667/tcp open irc
```
## Enumeration
### Banner
IRC can support **TLS**.
```bash
nc -vn
openssl s_client -connect : -quiet
```
### Manual
Here you can see how to connect and access the IRC using some **random nickname** and then enumerate some interesting info. You can learn more commands of IRC [here](https://en.wikipedia.org/wiki/List\_of\_Internet\_Relay\_Chat\_commands#USERIP).
```bash
#Connection with random nickname
USER ran213eqdw123 0 * ran213eqdw123
NICK ran213eqdw123
#If a PING : is responded you need to send
#PONG :
VERSION
HELP
INFO
LINKS
HELPOP USERCMDS
HELPOP OPERCMDS
OPERATOR CAPA
ADMIN #Admin info
USERS #Current number of users
TIME #Server's time
STATS a #Only operators should be able to run this
NAMES #List channel names and usernames inside of each channel -> Nombre del canal y nombre de las personas que estan dentro
LIST #List channel names along with channel banner
WHOIS #WHOIS a username
USERHOST #If available, get hostname of a user
USERIP #If available, get ip of a user
JOIN #Connect to a channel
#Operator creds Brute-Force
OPER
```
### **Find and scan IRC services**
```bash
nmap -sV --script irc-botnet-channels,irc-info,irc-unrealircd-backdoor -p 194,6660-7000 irked.htb
```
### [Brute Force](../brute-force.md#irc)
### Shodan
* `looking up your hostname`
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