Runs on install. The preinstall script marks a shell script bundled in the package as executable and runs it; the script contains a reverse-shell pattern, giving a remote party a shell on the installing machine. Version examined: 1.1.0; tarball SHA-256 8321ef8b36b40d9a5b5ba649e9ad4ec3bcbe18a9a484075c5e8e5e872ec0db0b.