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時間:2020.11.17 地點:好想工作室 - 想知道嗎 題目:逆向程式 - HEAP
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Heap overflow
1.
想知道嗎? 2020/11/19 Jeff 1/1/2021 0
2.
簡單介紹記憶體分層 Stack
& Heap 介紹 Stack 介紹 Heap Demo Exploits.com VM GOT Lazy binding 1/1/2021 1
3.
1/1/2021 2 Stack
-> 區域變數 Heap Bss -> 未初始化全域變數 Data -> 已初始化全域變數 Text …
4.
1/1/2021 3 Stack
-> 區域變數 Heap Bss -> 未初始化全域變數 Data -> 已初始化全域變數 Text … https://manybutfinite.com/post/anatomy-of-a-program-in-memory/
5.
1/1/2021 4
6.
1/1/2021 5 Push Pop 資料結構 LIFO
7.
1/1/2021 6 malloc() 動態記憶體分配 Why malloc?
-> 更有 效率分配記憶體空間 free() 釋放記憶體空間 https://gribblelab.org/CBootCamp/7_Memory_Stack_vs_Heap.html
8.
1/1/2021 7 liveoverflow
9.
1/1/2021 8 liveoverflow
10.
已 1/1/2021 9 liveoverflow 0x10 =
16 byte
11.
未 1/1/2021 10 liveoverflow
12.
1/1/2021 11 liveoverflow 更新到空的記憶體指標往前找已使用空間(向前減 4
byte)
13.
1/1/2021 12 liveoverflow
14.
1/1/2021 13 https://exploit-exercises.lains.space/
15.
1/1/2021 14 Heap1.c
16.
1/1/2021 15 liveoverflow i1 ->
name = [0x804a08 + 0x4]
17.
1/1/2021 16 liveoverflow
18.
1/1/2021 17 使用 GDB
黑箱測試 Heap Overflow Heap 成功原因?
19.
1/1/2021 18 Bamboofox frozenkp
20.
1/1/2021 19 Bamboofox frozenkp
21.
1/1/2021 20 Bamboofox frozenkp
22.
1/1/2021 21 Heap Explotation
博大精深XD 不是直接攻擊 Heap 而是透過更改 GOT 而控制 EIP,執行想要的func
23.
1/1/2021 22
24.
1/1/2021 23
25.
1/1/2021 24
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