Example of buffer overflow using strcpy

boverflow_strcpy.c

// to compile: gcc -fno-stack-protector -o boverflow_strcpy boverflow_strcpy.c
// to run (test): ./boverflow_strcpy $(python -c "print 'a'*15")
#include <stdio.h>
#include <strings.h>

void foo(char *bar){
	char buffer[16];
	strcpy(buffer, bar);
	printf("%s", buffer);
}

int main(int argc, char *argv[]) {
	foo(argv[1]);
	return 0;
}