Vexis is a custom x86-64 binary analysis and reverse-engineering platform I built from the ground...

Vexis is a custom x86-64 binary analysis and reverse-engineering platform I built from the ground...Vexis is a custom x86-64 binary analysis and reverse-engineering platform I built from the ground...

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Abdul Nafay Sarmad

• Sep 14

Vexis is a custom x86-64 binary analysis and reverse-engineering platform I built from the ground up in Rust, with a .NET desktop frontend for interactive analysis.

Instead of wrapping an existing disassembly library, I implemented the core instruction-decoding pipeline myself, including legacy and REX prefixes, ModR/M, SIB addressing, RIP-relative addressing, instruction boundaries, and control-flow instructions.

From that decoded instruction stream, Vexis reconstructs basic blocks, functions, and typed control-flow graphs, calculates cyclomatic complexity, identifies anti-disassembly patterns, and generates structured analysis reports.

The visual frontend turns the analysis engine into a usable product: users can inspect full disassembly, explore function-level CFGs, review complexity and control-flow statistics, and analyze entire batches of binaries from one interface.

Key engineering work included:

Custom x86-64 instruction decoder written in Rust

Linear-sweep and recursive-descent analysis strategies

Basic-block and function recovery

Control-flow graph generation and visualization

Cyclomatic complexity and binary statistics

Anti-disassembly detection

Batch analysis across multiple binaries

JSON, Markdown, and Graphviz reporting

Differential testing and fuzz testing of the decoder

.NET GUI communicating with the Rust engine across a clean process boundary

The result is more than a frontend demo: it is a complete analysis pipeline that goes from raw PE64 machine code to searchable disassembly, recovered program structure, visual control flow, and automated reports.

Completed work

Rust Backend Development Software Development Systems Engineering GitHub .NET

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