Binary Exploitation 3: Finding Buffer Overflow Offset with GDB

Oct 31, 2020 · 1 min read

Using GDB and gef

gef> pattern create 128                         
aaaaaaaaaaaaaaaaaaaaaaaaaaaaaa....aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa                                    
gef> run

copy paste the created pattern as input to program aaaaaaaa......aaaaaaaaaaaaaaaaa
The program will seg fault at $rsp because the pattern overflow the pointer

gef> pattern search $rsp
[+] Fond at offset 40
gef>