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ret2shellcode | 技术栈 #26

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yellowzq opened this issue Sep 6, 2022 · 0 comments
Open

ret2shellcode | 技术栈 #26

yellowzq opened this issue Sep 6, 2022 · 0 comments
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@yellowzq
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yellowzq commented Sep 6, 2022

https://www.rgzzplus.com/2022/09/05/ret2shellcode/

0x1 题目地址 拿到题目，首先看看文件类型，以及保护机制。 我们发现它缺少执行权限，加上权限后执行，是简单的输入输出，不过这里似乎给到我们了一个地址。 0x2 接下来，把程序拖入 ida，反汇编看看： 我们发现这个程序中并没有关于 flag 的相关信息，所以我们推测 flag 存放在服务器上。 还发现程序通过 read() 把输入存入buf[]，也没有保护机制保护栈，这就给了我们栈溢
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