Directory Listing Recon

First Method: Manual

1. Manually checking if random url exist: https://opera.com/ftp

2. Manual Inspecting the source code of site: ctrl + u

3. Using Google Dorks: site:microsoft.com intitle:indexof

Second Method: Sorta Automatic

1. Using Burp Suit: Target Tab to check site map.
2. Using Nikto Tool: nikto -h get.opera.com
3. Using Dirbusterl:
4. Using Wfuzz:
5. Using gobuster:
6. Using nmap: nmap --script http-enum.nse get.opera.com

References

1. google dorks to check reports: site:hackerone.com directory listing
2. google dorks search engine: https://nitinyadav00.github.io/Bug-Bounty-Search-Engine/