Adventures in code and reverse engineering

Hello!

Greetings!

In the first part of this mini-series, we hammered through a quick primer on equations and modular arithmetic in prime fields.

Programming and reverse engineering usually don’t involve more complex math than simple addition, subtraction, multiplication and division.

Having just wrapped up the MVP of my first Rust side project (about 7,500 lines of code), I want to share a few tips about some of the nuances of the language if you’re coming from something like C++, C# or Java.

[Update 21.06.2021: Since I penned this article, Nacon have released a statement announcing that the Apex Predator Pack day 1 DLC will be included in the base game for all customers at no extra cost.

Game publishers are loving it lately.

Today, I thought we’d have a bit of fun and show you a novel and unorthodox alternative way to find any function with known discrete inputs and an assumption about the possible outputs in a compiled application – specifically for this example, a decryption

Recently, while reverse engineering Honkai Impact 3rd I came across some string decryption code that was obfuscated by VMProtect‘s implementation of control flow flattening.

This is a continuation of the Reverse Engineering Adventures: Honkai Impact 3rd mini-series – read part 1 and part 2 first!