rMETAshell

rMETAshell takes a shell command and an image, video or text file as input. It then injects the command into the file using metadata comments. After injection, it generates a one-liner execution method for retrieving and executing the injected command from a remote location. Maintained by git5loxosec on GitHub, where it has earned 31 stars from the community.

It's actively developed around base64, bash, curl, and is a solid reference for anyone building with these tools.