From cf5873ffd72ba8b530429bda3c8931f9ada33747 Mon Sep 17 00:00:00 2001 From: Luca Deri Date: Mon, 13 Jun 2022 23:19:47 +0200 Subject: Improved DNS traffic analysis Added ability to identify application and network protocols --- src/lib/protocols/florensia.c | 144 +++++++++++++++++++++--------------------- 1 file changed, 72 insertions(+), 72 deletions(-) (limited to 'src/lib/protocols/florensia.c') diff --git a/src/lib/protocols/florensia.c b/src/lib/protocols/florensia.c index ca173a48c..95a6d99d5 100644 --- a/src/lib/protocols/florensia.c +++ b/src/lib/protocols/florensia.c @@ -36,83 +36,83 @@ static void ndpi_florensia_add_connection(struct ndpi_detection_module_struct *n void ndpi_search_florensia(struct ndpi_detection_module_struct *ndpi_struct, struct ndpi_flow_struct *flow) { - struct ndpi_packet_struct *packet = &ndpi_struct->packet; + struct ndpi_packet_struct *packet = &ndpi_struct->packet; - NDPI_LOG_DBG(ndpi_struct, "search florensia\n"); + NDPI_LOG_DBG(ndpi_struct, "search florensia\n"); - if (packet->tcp != NULL) { - if (packet->payload_packet_len == 5 && get_l16(packet->payload, 0) == packet->payload_packet_len - && packet->payload[2] == 0x65 && packet->payload[4] == 0xff) { - if (flow->florensia_stage == 1) { - NDPI_LOG_INFO(ndpi_struct, "found florensia\n"); - ndpi_florensia_add_connection(ndpi_struct, flow); - return; - } - NDPI_LOG_DBG2(ndpi_struct, "maybe florensia -> stage is set to 1\n"); - flow->florensia_stage = 1; - return; - } - if (packet->payload_packet_len > 8 && get_l16(packet->payload, 0) == packet->payload_packet_len - && get_u_int16_t(packet->payload, 2) == htons(0x0201) && get_u_int32_t(packet->payload, 4) == htonl(0xFFFFFFFF)) { - NDPI_LOG_DBG2(ndpi_struct, "maybe florensia -> stage is set to 1\n"); - flow->florensia_stage = 1; - return; - } - if (packet->payload_packet_len == 406 && get_l16(packet->payload, 0) == packet->payload_packet_len - && packet->payload[2] == 0x63) { - NDPI_LOG_DBG2(ndpi_struct, "maybe florensia -> stage is set to 1\n"); - flow->florensia_stage = 1; - return; - } - if (packet->payload_packet_len == 12 && get_l16(packet->payload, 0) == packet->payload_packet_len - && get_u_int16_t(packet->payload, 2) == htons(0x0301)) { - if (flow->florensia_stage == 1) { - NDPI_LOG_INFO(ndpi_struct, "found florensia\n"); - ndpi_florensia_add_connection(ndpi_struct, flow); - return; - } - NDPI_LOG_DBG2(ndpi_struct, "maybe florensia -> stage is set to 1\n"); - flow->florensia_stage = 1; - return; - } + if (packet->tcp != NULL) { + if (packet->payload_packet_len == 5 && get_l16(packet->payload, 0) == packet->payload_packet_len + && packet->payload[2] == 0x65 && packet->payload[4] == 0xff) { + if (flow->florensia_stage == 1) { + NDPI_LOG_INFO(ndpi_struct, "found florensia\n"); + ndpi_florensia_add_connection(ndpi_struct, flow); + return; + } + NDPI_LOG_DBG2(ndpi_struct, "maybe florensia -> stage is set to 1\n"); + flow->florensia_stage = 1; + return; + } + if (packet->payload_packet_len > 8 && get_l16(packet->payload, 0) == packet->payload_packet_len + && get_u_int16_t(packet->payload, 2) == htons(0x0201) && get_u_int32_t(packet->payload, 4) == htonl(0xFFFFFFFF)) { + NDPI_LOG_DBG2(ndpi_struct, "maybe florensia -> stage is set to 1\n"); + flow->florensia_stage = 1; + return; + } + if (packet->payload_packet_len == 406 && get_l16(packet->payload, 0) == packet->payload_packet_len + && packet->payload[2] == 0x63) { + NDPI_LOG_DBG2(ndpi_struct, "maybe florensia -> stage is set to 1\n"); + flow->florensia_stage = 1; + return; + } + if (packet->payload_packet_len == 12 && get_l16(packet->payload, 0) == packet->payload_packet_len + && get_u_int16_t(packet->payload, 2) == htons(0x0301)) { + if (flow->florensia_stage == 1) { + NDPI_LOG_INFO(ndpi_struct, "found florensia\n"); + ndpi_florensia_add_connection(ndpi_struct, flow); + return; + } + NDPI_LOG_DBG2(ndpi_struct, "maybe florensia -> stage is set to 1\n"); + flow->florensia_stage = 1; + return; + } - if (flow->florensia_stage == 1) { - if (packet->payload_packet_len == 8 && get_l16(packet->payload, 0) == packet->payload_packet_len - && get_u_int16_t(packet->payload, 2) == htons(0x0302) && get_u_int32_t(packet->payload, 4) == htonl(0xFFFFFFFF)) { - NDPI_LOG_INFO(ndpi_struct, "found florensia asymmetrically\n"); - ndpi_florensia_add_connection(ndpi_struct, flow); - return; - } - if (packet->payload_packet_len == 24 && get_l16(packet->payload, 0) == packet->payload_packet_len - && get_u_int16_t(packet->payload, 2) == htons(0x0202) - && get_u_int32_t(packet->payload, packet->payload_packet_len - 4) == htonl(0xFFFFFFFF)) { - NDPI_LOG_INFO(ndpi_struct, "found florensia\n"); - ndpi_florensia_add_connection(ndpi_struct, flow); - return; - } - if (flow->packet_counter < 10 && get_l16(packet->payload, 0) == packet->payload_packet_len) { - NDPI_LOG_DBG2(ndpi_struct, "maybe florensia\n"); - return; - } - } - } + if (flow->florensia_stage == 1) { + if (packet->payload_packet_len == 8 && get_l16(packet->payload, 0) == packet->payload_packet_len + && get_u_int16_t(packet->payload, 2) == htons(0x0302) && get_u_int32_t(packet->payload, 4) == htonl(0xFFFFFFFF)) { + NDPI_LOG_INFO(ndpi_struct, "found florensia asymmetrically\n"); + ndpi_florensia_add_connection(ndpi_struct, flow); + return; + } + if (packet->payload_packet_len == 24 && get_l16(packet->payload, 0) == packet->payload_packet_len + && get_u_int16_t(packet->payload, 2) == htons(0x0202) + && get_u_int32_t(packet->payload, packet->payload_packet_len - 4) == htonl(0xFFFFFFFF)) { + NDPI_LOG_INFO(ndpi_struct, "found florensia\n"); + ndpi_florensia_add_connection(ndpi_struct, flow); + return; + } + if (flow->packet_counter < 10 && get_l16(packet->payload, 0) == packet->payload_packet_len) { + NDPI_LOG_DBG2(ndpi_struct, "maybe florensia\n"); + return; + } + } + } - if (packet->udp != NULL) { - if (flow->florensia_stage == 0 && packet->payload_packet_len == 6 - && get_u_int16_t(packet->payload, 0) == ntohs(0x0503) && get_u_int32_t(packet->payload, 2) == htonl(0xFFFF0000)) { - NDPI_LOG_DBG2(ndpi_struct, "maybe florensia -> stage is set to 1\n"); - flow->florensia_stage = 1; - return; - } - if (flow->florensia_stage == 1 && packet->payload_packet_len == 8 - && get_u_int16_t(packet->payload, 0) == ntohs(0x0500) && get_u_int16_t(packet->payload, 4) == htons(0x4191)) { - NDPI_LOG_INFO(ndpi_struct, "found florensia\n"); - ndpi_florensia_add_connection(ndpi_struct, flow); - return; - } - } + if (packet->udp != NULL) { + if (flow->florensia_stage == 0 && packet->payload_packet_len == 6 + && get_u_int16_t(packet->payload, 0) == ntohs(0x0503) && get_u_int32_t(packet->payload, 2) == htonl(0xFFFF0000)) { + NDPI_LOG_DBG2(ndpi_struct, "maybe florensia -> stage is set to 1\n"); + flow->florensia_stage = 1; + return; + } + if (flow->florensia_stage == 1 && packet->payload_packet_len == 8 + && get_u_int16_t(packet->payload, 0) == ntohs(0x0500) && get_u_int16_t(packet->payload, 4) == htons(0x4191)) { + NDPI_LOG_INFO(ndpi_struct, "found florensia\n"); + ndpi_florensia_add_connection(ndpi_struct, flow); + return; + } + } - NDPI_EXCLUDE_PROTO(ndpi_struct, flow); + NDPI_EXCLUDE_PROTO(ndpi_struct, flow); } -- cgit v1.2.3