This ebook is good for beginners
Hacker Disassembling Uncovered ... i forgot the site
. so i attached
(roughly large attachment >4mb 
) it here. Theres another one worth mentioning although i haven't read it yet.
Exploiting Software: How To Break Code
by Greg Hoglund, Gary McGraw
i can't find ebook version of this book
if somebody knows where, pls share it.