# GrammaTech DDisasm

GrammaTech DDisasm is a Malware Analysis product by GrammaTech. It runs on-premises. Pricing is free.

Fast disassembler producing reassemblable assembly code using Datalog

Checked October 2026.

## What is GrammaTech DDisasm?

DDisasm is a disassembler that produces assembly code accurate enough to be reassembled. The tool is implemented using the Datalog (souffle) declarative logic programming language to compile disassembly rules and heuristics.

The disassembly process begins by parsing ELF file information and decoding a superset of possible instructions to create an initial set of datalog facts. These facts are analyzed to identify code locations, symbolization, and function boundaries. The results of this analysis produce a refined set of datalog facts that are translated to the GTIRB (GrammaTech Intermediate Representation for Binaries) intermediate representation for binary analysis and reverse engineering.

The GTIRB pretty printer can be used to convert the GTIRB output to reassemblable assembly code. The tool is available as a Docker image for quick deployment and testing.

DDisasm was developed with support from the Navy and the Office of Naval Research. The underlying research was published in a USENIX paper titled "Datalog Disassembly" which received a distinguished paper award.

Tags: Binary Analysis, Open Source, Reverse Engineering

## Quick facts

- Category: [Security Operations](https://cybersectools.com/categories/security-operations) · [Malware Analysis](https://cybersectools.com/categories/malware-analysis)
- Vendor: [GrammaTech](https://cybersectools.com/companies/grammatech)
- Deployment: On-Premises
- Company size fit: Mid-Market, Enterprise
- Pricing model: Free
- Features: 7 listed
- Integrations: 2 listed
- Website: grammatech.com

The full feature and integration lists are on the page for signed-in visitors.

## Where it ranks

No shortlist covers this product's category yet. The closest is [Best MDR Solutions for Business](https://cybersectools.com/shortlists/best-mdr-solutions).

## GrammaTech DDisasm FAQ

### What is GrammaTech DDisasm?

GrammaTech DDisasm is a product by GrammaTech in the Malware Analysis category. It covers Binary Analysis, Open Source and Reverse Engineering.

### What is the pricing for GrammaTech DDisasm?

GrammaTech DDisasm is free. Download and setup instructions are at https://grammatech.com/ddisasm/.

### What are alternatives to GrammaTech DDisasm?

Alternatives to GrammaTech DDisasm listed on CybersecTools:

1. [Trail of Bits PolyTracker](https://cybersectools.com/tools/trail-of-bits-polytracker) - Instruments programs to trace data and control flow through parsers and binary code (Free)
2. [Nightwing DejaVM](https://cybersectools.com/tools/nightwing-dejavm) - Whole-system emulation environment for software dev, debugging, testing & security (Commercial)
3. [Joe Sandbox DEC](https://cybersectools.com/tools/joe-sandbox-dec) - Plugin that decompiles malware PE files into readable C code using hybrid analysis. (Commercial)
4. [Zenyard RE Agent](https://cybersectools.com/tools/zenyard-re-agent) - AI agent for in-depth binary analysis and reverse engineering assistance. (Commercial)
5. [RevEng.AI](https://cybersectools.com/tools/revengai) - AI-powered binary analysis platform for reverse engineering & malware analysis. (Commercial)

Compare all GrammaTech DDisasm alternatives at [https://cybersectools.com/alternatives/grammatech-ddisasm](https://cybersectools.com/alternatives/grammatech-ddisasm)

### What deployment and organization size does GrammaTech DDisasm fit?

GrammaTech DDisasm is available as on-premises software. It is listed for mid-market companies and enterprises. It is free.

## Compare GrammaTech DDisasm with similar solutions

- [GrammaTech DDisasm vs Trail of Bits PolyTracker](https://cybersectools.com/compare/grammatech-ddisasm-vs-trail-of-bits-polytracker)
- [GrammaTech DDisasm vs Nightwing DejaVM](https://cybersectools.com/compare/grammatech-ddisasm-vs-nightwing-dejavm)
- [GrammaTech DDisasm vs Joe Sandbox DEC](https://cybersectools.com/compare/grammatech-ddisasm-vs-joe-sandbox-dec)

All alternatives to GrammaTech DDisasm: [/alternatives/grammatech-ddisasm](https://cybersectools.com/alternatives/grammatech-ddisasm)

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Source: https://cybersectools.com/tools/grammatech-ddisasm

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