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by oefrha 1387 days ago
Recent example I encountered: TikTok web API has dynamically generated parameters X-Bogus, msToken and _signature (could be slightly wrong, it’s been a while) that are verified server-side. I haven’t reversed their mobile app so not sure if they also employ MACs there, but I’ve seen these from other apps in the past. And it’s harder when employed in an app; on the web you’ll be reversing (obfuscated) JavaScript in a readily available debugger, whereas for an app you’ll likely be reversing from disassembly.