Blog search: #EBP

Tags

Simple login - Pwnable.kr

Posted on Jan. 19, 2017

Fuzzing a little bit we can easily crash the program...there is something weird happening here.

$ ./login 
Authenticate : aaaaaaaaaaaaa
hash : 0df08ae957b3d5ae2d6445c9416fe1cd
Segmentation fault (core dumped)

Analyzing a little bit we can realize that the program crashes at the address 0x08049424:

 ,=< 0x0804940a      7513           jne 0x804941f   
 |   0x0804940c      e84efeffff     call ...