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Articles by Import Struct
Implementing SHA-256 for MicroBlaze-V with DDR + Timer
Things used in this project × 1 Story In this Tutorial, we will continue where we left off and append our hardware design to include DDR Memory and a hardware timer via the AXI Timer IP.
[CTF] Google CTF 2025 - webz : Exploiting zlib's Huffman Code Table [English]
한국어: https://velog.io/@0range1337/CTF-Google-CTF-2025-webz-Exploiting-zlibs-Huffman-Code-Table 1. Overview 2. Background 2-1. google-zlib-Increase-Huffman-Table-Size.patch 2-2. Deflate Algorithm 2-2-1. LZ77 2-2-2. Huffman Coding 3. Code Analysis 3-1. Inflate 3-2. Huffman Table 3-3. Decode 4. Vulnerability 4-1. Unintialized Huffman Code Table 4-2. Exploiting inflate_fast 4-2-1. Integer Overflow (Unexploitable) 4-2-2. PoC 4-2-3. Stream Overflow (Exploitable) 4-2-4. PoC 5.
RATatouille: Cooking Up Chaos in the I2P Kitchen
This article was originally distributed as a private FLINT report to our customers on 29 January 2025. During our daily tracking and analysis routine at TDR (Threat Detection & Research), we have been monitoring a technique known as ClickFix. One of the payloads dropped in a campaign starting from November 2024 drew our attention due to the absence of a signature and the lack of documented behaviour and network patterns in public reports.
Connect to Azure SQL database in SQL Alchemy using Entra ID tokens
We have a web application at work that needs to connect to our Azure SQL database for the duration of the request. To make querying the database easier, we use SQL Alchemy and pyodbc. We have a few goals we want to achieve: Every request gets its own session. We want to open a new session when the request starts and close it once it is done. We want to connect to the database using the managed identity of the web service (Azure Function App or Azure Web App).
7 Ways to Convert String to Bytes in Python
In programming, converting data from one format to another is crucial. One such conversion that often arises is converting a string to bytes. This process is essential in Python for various reasons, including data encryption, network communication, and file handling. In this article, we will explore the 7 methods of converting strings to bytes in Python, its importance, and its benefits.
使用 struct 模块打包/解包二进制数据
Python 有一个内置模块 struct，从名字上看这和 C 的结构体有着千丝万缕的联系，C 的结构体是由多个数据组合而成的一种新的数据类型。 typedef struct { char *name; int age; char * gender; long salary; } People; struct 模块也是负责将多个不同类型的数据组合在一起，因为网络传输的数据都是二进制字节流。而 Python 只有字符串可以直接转成字节流，对于整数、浮点数则无能为力了。所以 Python 提供了 struct 模块来帮我们解决这一点，下面来看看它的用法。 打包和解包 struct 模块内部有两个函数用于打包和解包，分别是 pack 和 unpack。 pack：将数据打包成二进制字节流； unpack：对二进制字节流进行解包； import binascii import struct # values 包含一个 12 字节的字节串、一个整数、以及一个浮点数。 values = ("古明地觉".encode("utf-8"), 17, 156.7) # 第一个参数 "12s i f"...
tomcat中间件漏洞复现_super 硕的博客-CSDN博客
tomcat介绍 Tomcat是Apache 软件基金会（Apache Software Foundation）的Jakarta 项目中的一个核心项目，由Apache、Sun 和其他一些公司及个人共同开发而成。由于有了Sun 的参与和支持，最新的Servlet 和JSP 规范总是能在Tomcat 中得到体现，Tomcat 5支持最新的Servlet 2.4 和JSP 2.0 规范。因为Tomcat 技术先进、性能稳定，而且免费，因而深受Java 爱好者的喜爱并得到了部分软件开发商的认可，成为目前比较流行的Web 应用服务器。 Tomcat 服务器是一个免费的开放源代码的Web 应用服务器，属于轻量级应用服务器，在中小型系统和并发访问用户不是很多的场合下被普遍使用，是开发和调试JSP 程序的首选。对于一个初学者来说，可以这样认为，当在一台机器上配置好Apache 服务器，可利用它响应HTML（标准通用标记语言下的一个应用）页面的访问请求。实际上Tomcat是Apache 服务器的扩展，但运行时它是独立运行的，所以当你运行tomcat 时，它实际上作为一个与Apache...
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