My question is “Try to identify the services running on the server above, and then try to search to find public exploits to exploit them. Once you do, try to get the content of the ‘/flag.txt’ file. (note: the web server may take a few seconds to start)”, i used nmap -Pn -cV -cS -p[port] [host] then gain:
"└─$ nmap -Pn -sC -sV -p31770
Starting Nmap 7.93 ( ) at 2023-05-22 00:02 EDT
Nmap scan report for
Host is up (0.22s latency).

31770/tcp open http Apache httpd 2.4.41 ((Ubuntu))
|_http-title: Getting Started – Just another WordPress site
|_http-generator: WordPress 5.6.1
|_http-server-header: Apache/2.4.41 (Ubuntu)

Service detection performed. Please report any incorrect results at Nmap OS/Service Fingerprint and Correction Submission Page .
Nmap done: 1 IP address (1 host up) scanned in 31.80 seconds"
I tried searching on Google with ‘WordPress 5.6.1 exploit,’ but I couldn’t find any public exploits to use for ‘msf>search exploit [plugin_name].’ Can anyone help me with this step?

plugin name is not WordPress, it is Simple Backup Plugin. Now try to exploit it.