Brothers, last time we detailed the reverse engineering process of a certain headline’s a_bogus parameter, today we will tackle another key parameter—msToken. This parameter also plays an important role in the /api/pc/list/feed interface, dynamically changing with each request, and is a crucial part of the anti-scraping mechanism.
🧩 Core Analysis Approach
Through packet analysis, we found that the msToken parameter is not generated directly, but obtained through a request to the /web/common interface. This interface itself also requires the msToken parameter, creating a “which came first, the chicken or the egg” circular dependency issue.
Upon deeper analysis, we discovered that the real key lies in solving the encryption process of the staData parameter, which is central to obtaining the msToken.
⚙️ Technical Breakthrough Points
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Precise Positioning: Using XHR breakpoint interception technology to lock down the location of the encryption function
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Algorithm Restoration: Finding the core code for generating the staData parameter through stack analysis
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Environment Completion: Simulating a browser environment to allow the encryption code to run in Node.js
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Parameter Validation: Ensuring that the generated signature matches the original request exactly
📌 Important Statement
The content of this article is for technical communication and learning purposes only, please strictly adhere to relevant laws and regulations, respect website data rights, and do not use it for any illegal scraping or commercial purposes.
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