Merge pull request Pennyw0rth#557 from crosscutsaw/enable_cmdshell

new module: mssql > enable_cmdshell

Author: NeffIsBack

nxc/modules/enable_cmdshell.py

@@ -0,0 +1,76 @@
+class NXCModule:
+    """
+    Enables or disables xp_cmdshell in MSSQL Server.
+    Module by crosscutsaw
+    """
+
+    name = "enable_cmdshell"
+    description = "Enable or disable xp_cmdshell in MSSQL Server"
+    supported_protocols = ["mssql"]
+    opsec_safe = False
+    multiple_hosts = True
+
+    def __init__(self):
+        self.mssql_conn = None
+        self.context = None
+        self.action = None
+        self.advanced_options_backup = None  # Stores original value of 'show advanced options'
+
+    def options(self, context, module_options):
+        """
+        ACTION      enable or disable xp_cmdshell
+
+        Examples
+        --------
+        netexec mssql $TARGET -u $username -p $password -M enable_cmdshell -o ACTION=enable
+        netexec mssql $TARGET -u $username -p $password -M enable_cmdshell -o ACTION=disable
+        """
+        if "ACTION" in module_options:
+            self.action = module_options["ACTION"].lower()
+        else:
+            context.log.fail("Missing required option: ACTION (enable/disable)")
+            exit(1)
+
+    def on_login(self, context, connection):
+        self.context = context
+        self.mssql_conn = connection.conn
+
+        if self.action == "enable":
+            self.toggle_xp_cmdshell(enable=True)
+        elif self.action == "disable":
+            self.toggle_xp_cmdshell(enable=False)
+        else:
+            self.context.log.fail("Invalid ACTION. Use 'enable' or 'disable'.")
+
+    def backup_show_advanced_options(self):
+        """Backs up the current state of 'show advanced options'."""
+        query = "SELECT CAST(value AS INT) AS value FROM sys.configurations WHERE name = 'show advanced options'"
+        res = self.mssql_conn.sql_query(query)
+        if res:
+            self.advanced_options_backup = int(res[0]["value"])  # Convert to integer
+
+    def restore_show_advanced_options(self):
+        """Restores the original state of 'show advanced options' if needed."""
+        if self.advanced_options_backup is not None and self.advanced_options_backup == 0:
+            self.mssql_conn.sql_query("EXEC sp_configure 'show advanced options', '0'; RECONFIGURE;")
+
+    def toggle_xp_cmdshell(self, enable: bool):
+        """Enables or disables xp_cmdshell while preserving 'show advanced options' state."""
+        state = "1" if enable else "0"
+
+        # Backup 'show advanced options' state
+        self.backup_show_advanced_options()
+
+        # Enable 'show advanced options' if it was disabled
+        self.mssql_conn.sql_query("EXEC sp_configure 'show advanced options', '1'; RECONFIGURE;")
+
+        try:
+            # Enable or disable xp_cmdshell
+            self.mssql_conn.sql_query(f"EXEC sp_configure 'xp_cmdshell', '{state}'; RECONFIGURE;")
+            action_text = "enabled" if enable else "disabled"
+            self.context.log.success(f"xp_cmdshell successfully {action_text}.")
+        except Exception as e:
+            self.context.log.fail(f"Failed to execute command: {e}")
+
+        # Restore 'show advanced options' to its original state if needed
+        self.restore_show_advanced_options()

nxc/modules/link_enable_xp.py nxc/modules/link_enable_cmdshell.pynxc/modules/link_enable_xp.py renamed to nxc/modules/link_enable_cmdshell.py

@@ -1,11 +1,11 @@
 class NXCModule:
     """
-    Enable or disable xp_cmdshell on a linked SQL server
+    Enable or disable xp_cmdshell on a linked MSSQL server
     Module by deathflamingo
     """
 
-    name = "link_enable_xp"
-    description = "Enable or disable xp_cmdshell on a linked SQL server"
+    name = "link_enable_cmdshell"
+    description = "Enable or disable xp_cmdshell on a linked MSSQL server"
     supported_protocols = ["mssql"]
     opsec_safe = False
     multiple_hosts = False