Rb01.7z -

Use ls -la to check for hidden files (e.g., .env , .git ) that might contain sensitive metadata.

Run strings RB01.7z to look for human-readable text that might be visible without extracting, such as hardcoded keys or developer comments. Common Scenarios for "RB01" RB01.7z

Extract the contents using 7z x RB01.7z . If prompted for a password, common CTF defaults include password , infected , or the name of the event. Contents & Structure Use ls -la to check for hidden files (e

Could be a backup of a router configuration or a microcontroller "Release Build 01." How to Proceed If prompted for a password, common CTF defaults

You can use an online extractor if the file is small and not sensitive.

Focus on the "Steps to Reproduce"—how you found the file, the exact commands used to open it, and what the final "flag" or outcome was.