Risoluzione
Suggeritore password!
char buff_password[]="\x55\x89\xe5\xb8\xad\x4e\xad\xde\x5d\xc3";

int main(void) {                                  push %ebp
  int fd;                                         mov  %esp, %ebp
  char buff_getpid[16];                           mov  $0xdead4ead, %eax
                                                  pop  %ebp
  if((fd=open("/dev/kmem",O_RDWR))<0) return 1;   ret

  if(lseek(fd, INDIRIZZO, SEEK_SET)==-1) return 1;
  if(read(fd,buff_getpid, 16)!=16) return 1;

  if(lseek(fd, INDIRIZZO, SEEK_SET)==-1) return 1;
  if(write(fd,buff_password, 10)!=10) return 1;

  printf("PID %X\n",getpid());

 if(lseek(fd, INDIRIZZO, SEEK_SET)==-1) return 1;
 if(write(fd,buff_getpid, 16)!=16) return 1;

 close(fd);
}