A malicious little program that will overwrite the MBR of a hard drive with a custom bootloader, printing any text that you wish to be there! Made using C with the Win32 API, and the bootloader is written in x86 Assembly.
Works down to Windows XP, up to Windows 10.
Obtain the FlubifyMBR.exe executable, either from the "Releases" page, or by compiling it yourself. Then, just run the executable as an administrator, and the program will guide you through the rest.
Before compiling, make sure you have MinGW installed, either through installing it on Linux, or through MSYS2.
After that, simply run make in the root directory of the project. The executable will be in the build directory.
As with all my projects, contributions are highly appreciated!