Island: Reformat "payloads" in config before sending to agent

Allow the configuration to contain multiple payloads that can be run by
the agent.

monkey/monkey_island/cc/services/config.py

@@ -430,6 +430,7 @@ class ConfigService:
     @staticmethod
     def format_flat_config_for_agent(config: Dict):
         ConfigService._remove_credentials_from_flat_config(config)
+        ConfigService._format_payloads_from_flat_config(config)
 
     @staticmethod
     def _remove_credentials_from_flat_config(config: Dict):
@@ -443,3 +444,8 @@ class ConfigService:
 
         for field in fields_to_remove:
             config.pop(field, None)
+
+    @staticmethod
+    def _format_payloads_from_flat_config(config: Dict):
+        config.setdefault("payloads", {})["ransomware"] = config["ransomware"]
+        config.pop("ransomware", None)

monkey/tests/data_for_tests/monkey_configs/flat_config.json

@@ -93,8 +93,8 @@
         "encryption": {
             "enabled": true,
             "directories": {
-                "linux_target_dir": "",
+                "linux_target_dir": "/tmp/ransomware-target",
-                "windows_target_dir": ""
+                "windows_target_dir": "C:\\windows\\temp\\ransomware-target"
             }
         },
         "other_behaviors": {

monkey/tests/unit_tests/monkey_island/cc/services/test_config.py

@@ -33,3 +33,25 @@ def test_format_config_for_agent__credentials_removed(flat_monkey_config):
     assert "exploit_password_list" not in flat_monkey_config
     assert "exploit_ssh_keys" not in flat_monkey_config
     assert "exploit_user_list" not in flat_monkey_config
+
+
+def test_format_config_for_agent__ransomware_payload(flat_monkey_config):
+    expected_ransomware_config = {
+        "ransomware": {
+            "encryption": {
+                "enabled": True,
+                "directories": {
+                    "linux_target_dir": "/tmp/ransomware-target",
+                    "windows_target_dir": "C:\\windows\\temp\\ransomware-target",
+                },
+            },
+            "other_behaviors": {"readme": True},
+        }
+    }
+
+    ConfigService.format_flat_config_for_agent(flat_monkey_config)
+
+    assert "payloads" in flat_monkey_config
+    assert flat_monkey_config["payloads"] == expected_ransomware_config
+
+    assert "ransomware" not in flat_monkey_config