Reverse Engineering TikTok's VM: Cracking webmssdk.js

This project details the reverse engineering of TikTok's custom virtual machine (VM) found within webmssdk.js. The VM is a key part of TikTok's obfuscation and security. The project includes tools to deobfuscate webmssdk.js, decompile the VM instructions into readable code, inject a script to replace webmssdk.js with the deobfuscated version, and generate signed URLs for authenticated requests (like posting comments). The author overcame significant obfuscation techniques, including bracket notation and disguised function calls, to successfully deobfuscate and decompile the VM, ultimately enabling the generation of signatures for authenticated requests.