HackTheBox Questionnaire Writeup

Explore the basics of cybersecurity in the Questionnaire Challenge on Hack The Box. This very-easy-level Challenge introduces encryption reversal and file handling concepts in a clear and accessible way, perfect for beginners.

Is this a ‘32-bit’ or ‘64-bit’ ELF? (e.g. 1337-bit)

64-bit

What’s the linking of the binary? (e.g. static, dynamic)

dynamic

Is the binary ‘stripped’ or ‘not stripped’?

not stripped

Which protections are enabled (Canary, NX, PIE, Fortify)?

NX

What is the name of the custom function the gets called inside main()? (e.g. vulnerable_function())

vuln

What is the size of the ‘buffer’ (in hex or decimal)?

0x20

Which custom function is never called? (e.g. vuln())

gg

What is the name of the standard function that could trigger a Buffer Overflow? (e.g. fprintf())

fgets

Insert 30, then 39, then 40 ‘A’s in the program and see the output. After how many bytes a Segmentation Fault occurs (in hex or decimal)?

40

What is the address of ‘gg()’ in hex? (e.g. 0x401337)

0x401176