Cremniy

All tools for low-level development are combined and linked in a single application — write code, edit bytes, and analyze binaries without extra windows

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What is Cremniy?

Cremniy is an integrated environment for low-level development. Instead of keeping a HEX editor in one window, a disassembler in another, and a code editor in a third — all tools are combined and linked in a single convenient application.

Designed for:

• 🛠 System software developers
• 🔍 Reverse engineers
• 🔐 Cybersecurity specialists
• 📡 Embedded systems developers

Why Cremniy?

Low-level development today means using a code editor, HEX editor, disassembler, debugger, all opened in separate windows.

You constantly switch between different windows, and the tools are not linked together.

Cremniy solves this!

• 🔘 Everything is in one place
• 🔗 All tools are connected
• 💻 Unified workflow

Features ✨

Available now

Feature	Description
📝 Code editor	Write and edit low-level code with syntax support
🔢 HEX editor	Inspect and modify binary data at the byte level (patching)
🔧 Disassembler	Decode machine instructions into readable assembly

Coming soon

• 🐛 Debugger — step through execution, inspect registers and memory
• 🧠 Memory visualization — visual maps of memory layout and allocation

Contributing 👋

Contributions are welcome and encouraged.

Whether it's a bug fix, a new feature, or an improvement to documentation — feel free to open an issue or submit a pull request.

All tasks can be found in GitHub Projects.

All contributors are credited in ACKNOWLEDGEMENTS.md and mentioned in videos on the YouTube channel.

For guidelines, see CONTRIBUTING.md.

Warning

If you would like to take on a task, please leave a comment on the corresponding Issue. This helps prevent duplicate work.

Additionally, once you submit a Pull Request, reference the corresponding Issue in the PR description using Closes #ISSUE_NUMBER.

Build 🛠️

Prerequisites

Dependency	Minimum version
CMake	3.16
Qt	6.8.2
libgit2	1.x
C++ compiler	C++17 compliant

🪟 Windows

1. Install MSYS2
2. Install MinGW, CMake, Qt6-base, and libgit2 via MSYS2 terminal:

pacman -S --needed base-devel mingw-w64-ucrt-x86_64-toolchain mingw-w64-ucrt-x86_64-cmake mingw-w64-ucrt-x86_64-qt6-base mingw-w64-ucrt-x86_64-libgit2

3. Add MSYS2 package directory to PATH
   MSYS2 packages are located in C:\msys64\ucrt64\bin by default.

🐧 Linux (Debian-based / Fedora)

For Debian-based distributions:

sudo apt update
sudo apt install cmake g++ qt6-base-dev qt6-svg-dev qt6-tools-dev-tools libgit2-dev zlib1g-dev libssl-dev libpcre2-dev libhttp-parser-dev

For Fedora:

sudo dnf update --refresh
sudo dnf install cmake gcc-c++ qt6-qtbase-devel qt6-qtsvg-devel qt6-qttools-devel libgit2-devel zlib-devel openssl-devel pcre2-devel http-parser-devel

ℹ️ NOTE: If qt6-base-dev is unavailable in your distribution's repositories, use the official Qt installer instead.

🍎 macOS

Using Homebrew:

brew install cmake qt@6 libgit2

Build in Linux

git clone https://github.com/igmunv/cremniy.git
cd cremniy

mkdir build && cd build
cmake ../src
cmake --build .

Release build

cmake ../src -DCMAKE_BUILD_TYPE=Release
cmake --build . --config Release

Build in Windows

git clone https://github.com/igmunv/cremniy.git
cd cremniy

mkdir build && cd build
cmake -G "MinGW Makefiles" ..\src
cmake --build .

Release build

cmake ..\src -DCMAKE_BUILD_TYPE=Release
cmake --build . --config Release

🐧 Linux Installation Guide (Fedora-based distributions)

These instructions apply to systems using the DNF / RPM package manager.

🛠 Step-by-Step Installation:

1. Download the RPM package from the Assets section of the latest GitHub release.

2. Open the Terminal.

3. Navigate to the directory where the file was downloaded (e.g., the Downloads folder):

   cd ~/Downloads

4. Run the installation command:

   sudo dnf install ./cremniy-0.3.2-10.fc41.x86_64.rpm

   Note: The dnf package manager will automatically install cremniy along with all required dependencies.

5. Done! Once the process is complete, you can launch the application.

🍏 macOS Installation Guide (.dmg)

📦 Installation:

1. Download the DMG file from the Assets section of the latest GitHub release.
2. Double-click the downloaded .dmg file to mount it.
3. Drag the Cremniy icon and drop it directly onto the Applications folder shortcut.

4. Once the copying is complete, you can find and launch Cremniy from your Applications folder or Launchpad.

🛠 Troubleshooting: Post-Installation Guide (Quarantine Removal)

If you encounter the following error upon launching the application for the first time:

“App is damaged and can’t be opened” or “Apple cannot check it for malicious software”

This occurs because the macOS built-in security system (Gatekeeper) puts downloaded files into quarantine. To fix this, you need to clear the Apple file attributes:

🛠 Step-by-Step Quarantine Removal Guide:

1. Open the built-in Terminal app. (You can find it via Spotlight search by pressing Cmd + Space and typing "Terminal")
2. Paste the following command directly into the Terminal window:

   sudo xattr -cr /Applications/Cremniy.app

3. Press Enter.
4. The Terminal will prompt you to enter your Mac password (administrator password). ⚠️ Note: Characters or asterisks will not be displayed as you type your password. This is a standard macOS security feature. Just type your password blindly and press Enter.

Done! Restart the application. It should now open without any warnings.

License 📖

Distributed under the terms described in LICENSE.