OverFlow-0

Point: 100

Category

Binary Exploitation

Question

This should be easy. Overflow the correct buffer in this program and get a flag. Its also found in /problems/overflow-0_2_20c7eb49602df3c04c1f43bf9aff1faa on the shell server. Source.

Hint

• Find a way to trigger the flag to print

• If you try to do the math by hand, maybe try and add a few more characters. Sometimes there are things you aren't expecting.

Solution

Exploit: ./vuln aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa

Flag

picoCTF{3asY_P3a5yd2b59a57}