install

Additional install commands

macOS

Homebrewverified · 100%

brew install udis86

local Homebrew formula metadata

MacPortsverified · 94%

sudo port install udis86

MacPorts ports tree · devel/udis86/Portfile · source: api.github.com

Linux

Fedora dnfverified · 92%

sudo dnf install udis86

Fedora Rawhide package metadata · udis86 · source: dl.fedoraproject.org

Nixverified · 92%

nix profile install nixpkgs#udis86

nixpkgs package indexes · pkgs/by-name/ud/udis86/package.nix · source: api.github.com

Debian aptverified · 92%

sudo apt install udcli

Debian stable package indexes · udcli · source: deb.debian.org

overview

Package summary

Minimalistic disassembler library for x86

Project links

Commands and aliases

udcli

history

Project history and usage

Udis86 is a disassembler library and command-line utility for x86 and x86-64 instruction streams. The project provides libudis86 for embedding and udcli for quick terminal disassembly.

Project history

The SourceForge project describes Udis86 as an easy-to-use minimalistic disassembler library intended to aid software projects that perform binary code analysis. Its GitHub repository was created in March 2012 and is the official source-control home referenced by package metadata.

The README describes a C library that decodes raw binary data and exposes disassembled instructions through a structured API. It also documents support for Intel and AT&T assembly syntax, file, memory-buffer, and callback input, re-entrant operation, and no dynamic memory allocation.

Adoption history

Udis86 was adopted as both a library dependency and a small CLI utility. The CHANGES file acknowledges contributors from reverse-engineering and tooling communities, including radare, and the input package metadata shows packaging in Homebrew, Debian, Fedora, MacPorts, and Nix.

How it is used

Library users embed libudis86 to decode x86 or x86-64 machine code in binary-analysis tools. CLI users pipe bytes or files through udcli for fast inspection, selecting bitness and output syntax from the terminal.

Why package nerds care

For package nerds, Udis86 is a compact C disassembly dependency with a useful single executable. It sits in the reverse-engineering corner of package collections: small enough to install casually, but important when a build, debugger, or binary-analysis tool wants a stable x86 decoder.

Timeline

2012: Official GitHub repository created.
2013: v1.7 tag created.
2013: v1.7.2 tag created with input handling cleanup, API fixes, and documentation refinements.
Current packaging: source_facts lists Homebrew, Debian, Fedora, MacPorts, and Nix packages.

Related projects

The CHANGES file acknowledges radare among contributors for v1.7.2-era work.
Udis86 occupies the same broad binary-analysis niche as other disassemblers, but the official sources document this project specifically through libudis86 and udcli.

Sources

security posture

Risk level: green

library-like package without higher-risk signals.

Risk classifier

green risk · low confidence · appliance

Why

library-like package without higher-risk signals

Signals

metadata:library-like

Install behavior

No Homebrew post-install hook is recorded in formula metadata.
Homebrew bottle metadata is available for 6 platform targets.
Build metadata lists 1 build dependencies.

Recommended review

Before unattended agent use, check whether the tool reads plaintext credentials, writes remote state, publishes artifacts, or shells out to plugins.

executables

Installed executables

Command	Kind	Exposure	Note
`udcli`	cli	global executable

freshness

Version and freshness

These signals separate page generation age, package-manager activity, and upstream release comparison. Version lag is warned only when an evidence URL and comparable versions are present.

page generated2026-07-08

manager version1.7.2

manager updated2026-06-19

local dataok

upstreamnot checked

latest detectednot detected

https://sourceforge.net/projects/udis86/

infoRelease/tag comparison is only available for GitHub repositories.https://sourceforge.net/projects/udis86/none confidence

install metadata

Package metadata

Package key	brew:udis86
Version	1.7.2
Package manager	Homebrew
Package manager page	https://formulae.brew.sh/formula/udis86
Homepage	https://sourceforge.net/projects/udis86/
Repository	https://github.com/vmt/udis86
Upstream docs	http://udis86.sourceforge.net/
License	BSD-2-Clause
Source archive	https://downloads.sourceforge.net/project/udis86/udis86/1.7/udis86-1.7.2.tar.gz
Last updated	2026-06-19T12:33:03-07:00
Pulse	updated
Build dependencies	python@3.14
Bottle	available (on arm64_linux, arm64_sequoia, arm64_sonoma, arm64_tahoe, sonoma, x86_64_linux)
Homebrew post-install	not defined
Service	none declared

registry facts

Source database details

Source Database	Homebrew formula API
Tap	homebrew/core
Full Name	udis86
Version Scheme	0
Revision	1
Bottle Stable Root URL	https://ghcr.io/v2/homebrew/core
Deprecated	no
Disabled	no
Keg Only	no
URL Keys	stable

source database matches

Other package-manager records

Matches are pulled from external package-manager indexes and kept separate from local Automic Vault package links.

Nix95%

udis86

nix profile install nixpkgs#udis86

normalized package name match
Matched by: Udis86

nixpkgs package indexes · api.github.com · nixpkgs package indexes: pkgs/by-name/ud/udis86/package.nix from https://api.github.com/repos/NixOS/nixpkgs/git/trees/master?recursive=1

dnf95%

udis86 1.7.2-30.56ff6c8.fc44

A disassembler library for x86 and x86-64

https://github.com/vmt/udis86

sudo dnf install udis86

License: BSD-2-Clause
Category: Unspecified
Architecture: i686
Source Package: udis86
2 dependencies
2 provides
normalized package name match
Matched by: Udis86

Fedora Rawhide package metadata · dl.fedoraproject.org · Fedora Rawhide package metadata: udis86 from https://dl.fedoraproject.org/pub/fedora/linux/development/rawhide/Everything/x86_64/os/repodata/e5ca8ce900cd68f5419e1c39ae517343100b306336cbaeb70a3c153121d95094-primary.xml.zst

dnf95%

udis86-devel 1.7.2-30.56ff6c8.fc44

Development files for udis86

https://github.com/vmt/udis86

sudo dnf install udis86-devel

License: BSD-2-Clause
Category: Unspecified
Architecture: i686
Source Package: udis86
2 dependencies
1 provides
normalized package name match
Matched by: Udis86

Fedora Rawhide package metadata · dl.fedoraproject.org · Fedora Rawhide package metadata: udis86-devel from https://dl.fedoraproject.org/pub/fedora/linux/development/rawhide/Everything/x86_64/os/repodata/e5ca8ce900cd68f5419e1c39ae517343100b306336cbaeb70a3c153121d95094-primary.xml.zst

MacPorts95%

udis86

sudo port install udis86

normalized package name match
Matched by: Udis86

MacPorts ports tree · api.github.com · MacPorts ports tree: devel/udis86/Portfile from https://api.github.com/repos/macports/macports-ports/git/trees/master?recursive=1

Debian apt92%

udcli 0+20221013-1.1

Disassembler for x86 and x86-64 class ISA (cli)

https://github.com/canihavesomecoffee/udis86

sudo apt install udcli

Section: misc
Architecture: amd64
Source Package: libudis86
2 dependencies
installed executable or alias match
Matched by: Udcli

Debian stable package indexes · deb.debian.org · Debian stable package indexes: udcli from https://deb.debian.org/debian/dists/stable/main/binary-amd64/Packages.xz

package graph

Links come from deterministic package relationships, av.db category and tag curation, ecosystem matches, and package hub membership.

source trail

Generated from repository data

This page is generated by av-web from the private package SQLite artifact built by scripts/generate-pkg-sqlite.py.

Combined YAML source

View the package source record on GitHub.

combined/udis86.yml

Used sources

Geiger risk classifier
Nucleus package database
av.db category and tag curation
cross-ecosystem install command graph
curated package history
external package-manager database matches
package relationship graph
package version freshness
package-page enrichment

Install udis86 with Homebrew, dnf, MacPorts, Nix, apt