Private (500 points)

go.ctf.site 16667

From our scanning results we can see that there is an IRC service running on port 16667. We can use the irssi command or hexchat to connect to the server.

16667/tcp open  irc
16697/tcp open  ssl/irc UnrealIRCd
| irc-info: 
|   users: 43
|   servers: 2
|   ops: 7
|   chans: 26
|   lusers: 36
|   lservers: 1
|_  server: go.ctf.site
| ssl-cert: Subject: commonName=go.ctf.site/organizationName=EKO{th3_f1rst_irc_fl4g}/stateOrProvinceName=Antioquia/countryName=CO
| Not valid before: 2023-10-22T03:44:22
|_Not valid after:  2033-10-19T03:44:22

After connecting to the server, we will run the command /list to list all the channels since the term Private looks like a channel for me. After listing we got its topic description in the IRC server.

FLAG: EKO{n1ckserv_expert}