Friends who are engaged in reverse engineering, this time I will go directly to the hardcore list. The following cases cover real business scenarios such as e-commerce, short video, education, audio, and community. From basic login encryption and search parameter reverse engineering to Webpack obfuscation, verification code protocol analysis, and audio direct link extraction, there are corresponding practical dismantlings. If you follow along, your JS reversal level will definitely reach a higher level.
🧭 Case Study
🔥 Introduction to each case
京东电商数据批量采集 h5st 逆向实战
JD.com’s h5st parameter has always been the backbone of the anti-crawling system. This article will take you step by step to locate the encryption entrance, disassemble the fingerprint algorithm, and complete the call of pure calculation or supplementary environment to achieve stable collection of batch data.
QQ音乐 sign 值逆向实战 – Webpack 打包分析
The code packaged by Webpack is not ordinary obfuscation. Module loaders and self-executing functions are nested layer by layer. This article starts with the request stack, locates the sign calculation module, and restores the encryption logic that can be called independently.
拼多多电商数据 anti‑content 参数逆向实战
Pinduoduo’s anti-content involves environment verification and dynamic keys. In practice, it is not only necessary to reverse engineer the generation algorithm, but also simulate the necessary browser environment parameters in order to pass the risk control verification of the interface.
geetest-slider-reverse
The slider verification code is not as simple as dragging it. The article dissects Jiexin's w parameter generation, trajectory encryption algorithm and request protocol in detail, allowing you to achieve automated inspections in login, registration and other scenarios.
抖音 a_bogus 参数加密逆向
Douyin’s a_bogus is hidden in JSVMP, and parameter generation is strongly related to the environment. This case will analyze its core protection logic and demonstrate the complete process from code deduction to supplementary environment call.
今日头条 a_bogus 参数加密逆向
It has the same origin as Douyin, but there are differences in details. Through this comparative analysis, you can have a deep understanding of the parameter encryption style of Toutiao products and draw inferences from one example.
cqu-login-password-reverse
The encryption of university systems is often relatively simple, but it is very suitable for novices to practice. This article starts with the login package, locates the front-end encryption function, reproduces the password encryption process, and realizes automatic login.
拼多多社会招聘反爬参数逆向实战（Anti‑Content生成）
It’s also anti-content, but its performance in the social recruitment interface is slightly different. This article specifically focuses on the recruitment scenario, analyzing its anti-crawling countermeasures for interfaces such as form submission and list page turning.
cdut-admission-auto
The automated collection of enrollment information focuses on page turning parameter construction and data cleaning. This article takes you through a complete production-level project from packet capture, parameter reversal to script writing.
ximalaya-audio-reverse
Want to get the real direct link to the audio file? This article focuses on signature verification and anti-leeching mechanisms, and teaches you how to construct requests and obtain audio URLs stably.
小红书 x‑s 参数加密逆向实战
Xiaohongshu’s x‑s is a key signature parameter in the request header, involving multiple verifications such as timestamp and device fingerprint. The case will completely restore its generation logic and give a runnable calling example.
Each title above corresponds to a complete practical note, including the entire process from packet capture analysis, breakpoint debugging, algorithm restoration to final code implementation. It is recommended to check it as needed, start with the platform you are interested in, and adjust as you go for the best effect.