A cross-platform (Windows, Linux, Mac, BSD) hex editor for reverse engineering, and everything else.
An online copy of the manual can be accessed here: solemnwarning.net/rehex/manual/.
- Large (1TB+) file support
- Decoding of integer/floating point value types
- Inline disassembly of machine code
- Highlighting and annotation of ranges of bytes
- Side by side comparision of whole files or selections
- Lua scripting support (API reference)
- Virtual address mapping support
- Support for common text encodings (ASCII, Unicode, ISO-8859-X, etc)
- Import and export of Intel HEX files.
- Bitmap data visualisation.
- Binary Templates for automatically annotating data (similar to 010 Editor).
- Bit editing/manipulation.
- Checksumming of files/selections.
The Releases page has standalone packages for Windows and Mac, as well as installable packages for popular Linux distributions, or you can install them from a distribution package repository as described below.
The same packages are also produced for Git commits (look for the tick), if you want to try the development/unreleased versions.
First, you will need to download my APT signing key to your system:
sudo wget -O /etc/apt/keyrings/solemnwarning-archive-keyring.gpg \
https://solemnwarning.github.io/solemnwarning-archive-keyring.gpg
Add the following lines to your /etc/apt/sources.list file:
deb [signed-by=/etc/apt/keyrings/solemnwarning-archive-keyring.gpg] http://repos.solemnwarning.net/debian/ CODENAME main
deb-src [signed-by=/etc/apt/keyrings/solemnwarning-archive-keyring.gpg] http://repos.solemnwarning.net/debian/ CODENAME main
NOTE: Replace CODENAME with the version you're running (e.g. trixie or bookworm).
Finally, you can install the package:
$ sudo apt-get update
$ sudo apt-get install rehex
First, you will need to download my APT signing key to your system:
sudo wget -O /etc/apt/keyrings/solemnwarning-archive-keyring.gpg \
https://solemnwarning.github.io/solemnwarning-archive-keyring.gpg
Add the following lines to your /etc/apt/sources.list file:
deb [signed-by=/etc/apt/keyrings/solemnwarning-archive-keyring.gpg arch=amd64] http://repos.solemnwarning.net/ubuntu/ CODENAME main
deb-src [signed-by=/etc/apt/keyrings/solemnwarning-archive-keyring.gpg arch=amd64] http://repos.solemnwarning.net/ubuntu/ CODENAME main
NOTE: Replace CODENAME with the version you're running (e.g. noble for 24.04 or questing for 25.10).
Finally, you can install the package:
$ sudo apt-get update
$ sudo apt-get install rehex
NOTE: Ubuntu users must have the "universe" package repository enabled to install some of the dependencies.
$ sudo dnf copr enable solemnwarning/rehex
$ sudo dnf install rehex
$ sudo dnf install epel-release
$ sudo dnf copr enable solemnwarning/rehex
$ sudo dnf install rehex
$ sudo zypper ar obs://editors editors
$ sudo zypper ref
$ sudo zypper in rehex
$ pkg install rehex
$ USE="git" emerge eselect-repository -av
$ eselect repository enable pentoo
$ emaint -a sync
$ emerge app-editors/rehex -va
Compiling REHex from source is described in COMPILING.md.
If you find any bugs or have suggestions for improvements or new features, please open an issue on Github.