exploitable

makefile

CFLAGS=-g
SS=stackSmash
CC=clang -v

$(SS): $(SS).o
	$(CC) $(CFLAGS) $(SS).o -o $(SS)
	objdump -xtd ./$(SS) > $(SS).asm

.c.o:
	$(CC) -c $<

clean:
	rm -f $(SS) $(SS).o $(SS).asm

stackSmash.c

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

void greet() {
   char nameBuf[8];

   printf("hello, what is your name: ");
   gets(nameBuf);

   printf("hi, %s\n", nameBuf);
}

int main() {
   int local;

   printf("%-8s@:%08x\n%-8s@:%08x\n%-8s@:%08x\n", 
      "main", (unsigned int) main, 
      "greet", (unsigned int) greet, 
      "local", (unsigned int) &local);

   greet();

   printf("bye\n");
   return 0;
}