level02.c

level2@io:/levels$ cat level02.c
//a little fun brought to you by bla
 
#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]);
}