Мастерство приходит только с практикой.

Level3 is a blast from the past, with not much details and a sstriped binary!

Experiment around / partially disassemble level3, work out what it wants, and how to exploit it. Some bruteforcing may be required ;)

Binary information

Stack smashing protection (SSP): Enabled
Postition Independent Executable (PIE): Disabled
Address space layout randomisation (ASLR): Enabled
Non-executable pages: None / disabled
Location: /levels/level3