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hctf2016-fheap's Introduction

#就是干 (fheap)
这一题的出题思路其实和题目名字一样，就是干。
所以程序里也没有什么稀奇古怪的背景和多余的代码。包括double free的尝试条件也是直接了当。考验的就是攻击者绕过nx，aslr，pie，canary保护，通过各种pwn技巧来获得shell的能力。
题目里附带了我自己写的poc。分享给大家，虽然看过各位大佬的wp后发现可以用一些我没预料到的技巧更好的利用

编译方法 
>gcc main.c -pie -fpic -o pwn

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