Rust: Vectors, ObfuscateX and DeobfuscateX

Simple Rust Generator to hide strings in your binary

Video: https://youtu.be/DDaVy5WMw70?feature=shared

Transcript

1. Rust: Vectors, ObfuscateX and DeobfuscateX Simple Rust Generator to hide strings in your binary Fatah Hashim (VX1988) Personal Security Research, 2025
2. Disclaimer • All the materials are for educational and research purposes only. • The views and opinions expressed in this content are my own and do not necessarily reflect the views and opinions of any company or organization that I am affiliated with. Personal Security Research ― Fatah Hashim (VX1988) | VX Engineering
3. Background Fatah Hashim (VX1988) • Research Focus: Malware Code Research, Programming and Reverse-Engineering. • VX Engineering • MCC 2022 & GCC 2023 Alumni Personal Security Research ― Fatah Hashim (VX1988) | VX Engineering
4. Topics Personal Security Research ― Fatah Hashim (VX1988) | VX Engineering 1. Rust Introduction ➢ Short introduction to software development in rust. 2. Basics of Rust Binaries Development ➢ Rust Basic Understanding. 3. Overview ObfuscateX & DeobfuscateX ➢ Tool Code Understanding and Demo Usage
5. Setup and Tools • Rust toolchain oGo to https://rustup.rs/ and follow the instructions for your platform OS! oRun it and select option 1 (proceed with installation) oMake sure you can run rustup and cargo from your terminal, after installation oThree toolchains available at any time. ▪ Stable, Beta, Nightly ▪ Stable installed initially by default • OR (Web Browser Compiler) Rust Playground. • (Optional) Disassembler / Decompiler Tool. • Internet connection. Personal Security Research ― Fatah Hashim (VX1988) | VX Engineering
6. Why Rust? i. Rust aims to be similar in terms of performance to C++. ii. It is multi-purpose language, carrying excellent communities. iii. It has an amazing inbuilt dependency build management called Cargo. Personal Security Research ― Fatah Hashim (VX1988) | VX Engineering
7. Payload Encoding and Encryption • Why payload encoding/encryption? • Difference between encoding and encryption • Examples: Base64, XOR, AES Personal Security Research ― Fatah Hashim (VX1988) | VX Engineering
8. Topics Personal Security Research ― Fatah Hashim (VX1988) | VX Engineering 1. Rust Introduction ➢ Short introduction to software development in rust. 2. Basics of Rust Binaries Development ➢ Rust Basic Code Understanding. 3. Overview ObfuscateX & DeobfuscateX ➢ Tool Code Understanding and Demo Usage
9. Some Rust Basics Personal Security Research ― Fatah Hashim (VX1988) | VX Engineering • Language is case sensitive • Functions are declared with the fn keyword • Blocks of code are surrounded by curly braces { } • Function names ending with ! are macros • String literals surrounded by quotation marks “ ”
10. Rust Recap: Arrays Personal Security Research ― Fatah Hashim (VX1988) | VX Engineering • Array is contiguous list of values of a specified type o Element access with index in brackets []
11. Rust Recap: Vector 1/3 Personal Security Research ― Fatah Hashim (VX1988) | VX Engineering • Vector - similar to an array. • Slower than arrays, but more flexible.
12. Rust Recap: Vector 2/3 Personal Security Research ― Fatah Hashim (VX1988) | VX Engineering Adding value with push:
13. Rust Recap: Vector 3/3 Personal Security Research ― Fatah Hashim (VX1988) | VX Engineering With index:
14. Topics Personal Security Research ― Fatah Hashim (VX1988) | VX Engineering 1. Rust Introduction ➢ Short introduction to software development in rust. 2. Basics of Rust Binaries Development ➢ Rust Basic Understanding. 3. Overview ObfuscateX & DeobfuscateX ➢ Tool Code Understanding and Demo Usage
15. Project Comparison Personal Security Research ― Fatah Hashim (VX1988) | VX Engineering https://github.com/anvie/litcrypt.rs
16. ObfuscateX Personal Security Research ― Fatah Hashim (VX1988) | VX Engineering https://github.com/VX1988/ObfuscateX
17. DeobfuscateX Personal Security Research ― Fatah Hashim (VX1988) | VX Engineering https://github.com/VX1988/DeobfuscateX
18. Demo
19. • Rust home page • Official rust docs • Rust playground • The Rust book • Rust by example • Awesome Rust • Rust GitHub repository 19 Personal Security Research ― Fatah Hashim (VX1988) | VX Engineering Useful Rust Resources
20. Any Questions?
21. Thank you ! Fatah Hashim (VX1988)