Root me write-up : ELF x64 - Stack buffer overflow - basic

To comply with the write-up rule of root-me.org, in this write-up, I just talk about some hints related this challenge. Here is no solution and correct answer.

This is regular buffer overflow challenge except the architecture.

Because this challenge is based on x86_64, you should be careful calculating related the size of the memory.

Also note that the vulnerable function is not library dependent.