exe-append

Appends arbitrary data to signed Windows executables. This is done by embedding the data at the end of the digital certificate section.

This method is described in more detail in this blog post: http://blog.barthe.ph/2009/02/22/change-signed-executable/

Installing

npm install exe-append

Using

var exe = require("exe-append");
var buffer = exe.append(fs.readFileSync("my.exe"), "arbirarty data");