hack

Hack Go Runtime

This is a hack tool to copy const and type declarations from go source and inject hacked code. With this hack, it's possible to expose any interesting type to wild world.

Play with it

Download a go src tar file from https://golang.org/dl/, extract all files to a folder and run following command.

./hack.sh path-to-go-src

How it works

The basic idea is quite simple: If we can get internal type declarations and make it public, then we can use it easily. So what I do is to parse all interesting go source files and copy types to a folder and inject some hacked code to make some types public.

The generator.go is the key file to make it happen. It loads all hacks and walk through all AST tree nodes in a file to find out all constants and types. It works quite well with internal package and ignored files, as these features are required for go1.6 and greater.

There is only 1 hack implemented in runtime_hacker.go. If we want to add more hacks, just implement more hacker files.