1 files changed, 98 insertions, 0 deletions
diff --git a/src/lib/protocols/radmin.c b/src/lib/protocols/radmin.c
new file mode 100644
index 000000000..4ecf12f1b
--- /dev/null
+++ b/src/lib/protocols/radmin.c
@@ -0,0 +1,98 @@
+/*
+ * radmin.c
+ *
+ * Copyright (C) 2024 - ntop.org
+ * Copyright (C) 2024 - V.G <jacendi@protonmail.com>
+ *
+ * This file is part of nDPI, an open source deep packet inspection
+ * library based on the OpenDPI and PACE technology by ipoque GmbH
+ *
+ * nDPI is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU Lesser General Public License as published by
+ * the Free Software Foundation, either version 3 of the License, or
+ * (at your option) any later version.
+ *
+ * nDPI is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU Lesser General Public License for more details.
+ *
+ * You should have received a copy of the GNU Lesser General Public License
+ * along with nDPI.  If not, see <http://www.gnu.org/licenses/>.
+ * 
+ */
+
+#include "ndpi_protocol_ids.h"
+
+#define NDPI_CURRENT_PROTO NDPI_PROTOCOL_RADMIN
+
+#include "ndpi_api.h"
+#include "ndpi_private.h"
+
+static void ndpi_int_radmin_add_connection(struct ndpi_detection_module_struct *ndpi_struct,
+                                           struct ndpi_flow_struct *flow)
+{
+  NDPI_LOG_INFO(ndpi_struct, "found Radmin\n");
+  ndpi_set_detected_protocol(ndpi_struct, flow,
+                             NDPI_PROTOCOL_RADMIN, NDPI_PROTOCOL_UNKNOWN,
+                             NDPI_CONFIDENCE_DPI);
+  ndpi_set_risk(ndpi_struct, flow, NDPI_DESKTOP_OR_FILE_SHARING_SESSION, "Found Radmin");
+}
+
+static void ndpi_search_radmin(struct ndpi_detection_module_struct *ndpi_struct,
+                               struct ndpi_flow_struct *flow)
+{
+  struct ndpi_packet_struct const * const packet = &ndpi_struct->packet;
+
+  if (current_pkt_from_client_to_server(ndpi_struct, flow) && packet->payload_packet_len == 10 &&
+      !flow->l4.tcp.radmin_stage)
+  {
+    if (ntohl(get_u_int32_t(packet->payload, 0)) == 0x1000000 && 
+        packet->payload[4] == 1 &&
+        ntohs(get_u_int16_t(packet->payload, 8) == 0x808))
+    {
+      flow->l4.tcp.radmin_stage = 1;
+      return;
+    }
+  }
+
+  if (current_pkt_from_server_to_client(ndpi_struct, flow) && packet->payload_packet_len == 46 &&
+      flow->l4.tcp.radmin_stage)
+  {
+    if (ntohl(get_u_int32_t(packet->payload, 0)) == 0x1000000 &&
+        packet->payload[4] == 0x25 &&
+        ntohl(get_u_int32_t(packet->payload, 7)) == 0x2120802 &&
+        packet->payload[13] == 0x0A)
+    {
+      ndpi_int_radmin_add_connection(ndpi_struct, flow);
+      return;
+    }
+  }
+
+  if (packet->payload_packet_len == 14 && 
+      ntohl(get_u_int32_t(packet->payload, 0)) == 0x1000000 &&
+      packet->payload[4] == 5 && 
+      ntohs(get_u_int16_t(packet->payload, 8)) == 0x2727)
+  {
+    if (!flow->l4.tcp.radmin_stage) {
+      flow->l4.tcp.radmin_stage = 1;
+      return;
+    }
+
+    ndpi_int_radmin_add_connection(ndpi_struct, flow);
+    return;
+  }
+
+  NDPI_EXCLUDE_PROTO(ndpi_struct, flow);
+}
+
+void init_radmin_dissector(struct ndpi_detection_module_struct *ndpi_struct, u_int32_t *id)
+{
+  ndpi_set_bitmask_protocol_detection("Radmin", ndpi_struct, *id,
+				      NDPI_PROTOCOL_RADMIN,
+				      ndpi_search_radmin,
+				      NDPI_SELECTION_BITMASK_PROTOCOL_V4_V6_TCP_WITH_PAYLOAD_WITHOUT_RETRANSMISSION,
+				      SAVE_DETECTION_BITMASK_AS_UNKNOWN,
+				      ADD_TO_DETECTION_BITMASK);
+  *id += 1;
+}