Cross Compiling Implants

NOTE: Any platform can cross-compile a standalone executable to any other platform out of the box, you only need cross-compilers when using --format shared.

Sliver can tell you which platforms it can likely target based on the server's platform and available cross-compilers by running the generate info command in the console.

From Linux to MacOS/Windows

To compile Windows shared library and shellcode implants from Linux, install mingw from your local package manager:

sudo apt install mingw-w64

To compile MacOS shared library implants from Linux, we recommend using https://github.com/tpoechtrager/osxcross by default Sliver will look in /opt/osxcross but you can override this via environment variables. If you do not have a MacOS based machine you can use GitHub Actions' MacOS instances to build OSXCross.

Sliver automatically looks in the default paths for these cross compilers, once installed simply use the generate command with the desired --os and --arch, check ~/.sliver/logs/sliver.log for build errors. You can override any cross compiler location via the appropriate environment variables.

From MacOS to Linux/Windows

To compile Windows shared library and shellcode implants from MacOS install mingw from brew:

brew install mingw-w64

For Linux, we recommend musl-cross to target 64-bit Linux, which can be installed via brew:

brew install FiloSottile/musl-cross/musl-cross
brew install mingw-w64

I'm not aware of any good options to target 32-bit Linux from MacOS. Sliver automatically looks in the default paths for these cross compilers, once installed simply use the generate command with the desired --os and --arch, check ~/.sliver/logs/sliver.log for build errors. You can override any cross compiler location via the appropriate environment variables.

From Windows to MacOS/Linux

Good luck.