Wow, thank you very much for your answer Frey! With your message, you open my eyes!!! so I know what to do and it is exactly what you said. Before I start some certified, I need to be more comfortable with the system, networking, tools, OWASP, etc..…
Finally got the root flag on SecNotes.
I can just say, really great box. I like very much box like this and I learned a lot. 😀
Many thanks to the creator of this box!!!!
If someone needs some help, just PM me. I'll try to replay quickly.