Add default param values to Mixins::ReverseShell (closes #114).

* Default `host` to `0.0.0.0`.
* Default `port` to `4444`.

lib/ronin/payloads/mixins/reverse_shell.rb

@@ -43,9 +43,11 @@ module ReverseShell
         #
         def self.included(payload)
           payload.param :host, String, required: true,
+                                       default:  '0.0.0.0',
                                        desc:     'The host to connect back to'
 
           payload.param :port, Integer, required: true,
+                                        default:  4444,
                                         desc:     'The port to connect back to'
         end
 

spec/mixins/reverse_shell_spec.rb

@@ -18,13 +18,15 @@ class TestPayload < Ronin::Payloads::Payload
       expect(subject.params[:host]).to_not be_nil
       expect(subject.params[:host].type).to be_kind_of(Ronin::Core::Params::Types::String)
       expect(subject.params[:host].required?).to be(true)
+      expect(subject.params[:host].default).to eq('0.0.0.0')
       expect(subject.params[:host].desc).to eq('The host to connect back to')
     end
 
     it "must add a required 'port' param" do
       expect(subject.params[:port]).to_not be_nil
       expect(subject.params[:port].type).to be_kind_of(Ronin::Core::Params::Types::Integer)
       expect(subject.params[:port].required?).to be(true)
+      expect(subject.params[:port].default).to eq(4444)
       expect(subject.params[:port].desc).to eq('The port to connect back to')
     end
   end
@@ -40,12 +42,28 @@ class TestPayload < Ronin::Payloads::Payload
     it "must return the 'host' param value" do
       expect(subject.host).to eq(host)
     end
+
+    context "when no 'host' param value is given" do
+      subject { payload_class.new }
+
+      it "must default to '0.0.0.0'" do
+        expect(subject.host).to eq('0.0.0.0')
+      end
+    end
   end
 
   describe "#port" do
     it "must return the 'port' param value" do
       expect(subject.port).to eq(port)
     end
+
+    context "when no 'port' param value is given" do
+      subject { payload_class.new }
+
+      it "must default to 4444" do
+        expect(subject.port).to eq(4444)
+      end
+    end
   end
 
   describe "#perform_prelaunch" do