From e17fa1259aa3b2fb4a6479188ac98fb826967848 Mon Sep 17 00:00:00 2001 From: Maatuq Date: Wed, 31 May 2023 09:31:01 +0400 Subject: Add bitcoing protocol dissector. (#1992) * Add bitcoing protocol dissector. * remove bitcoin protcol detection from mining.c * add a new bitcoin deissector. * add a new category: Cryptocurrency. Signed-off-by: Mahmoud Maatuq * Remove useless checks and add missing windows and docs file. Signed-off-by: Mahmoud Maatuq * update affected tests. Signed-off-by: Mahmoud Maatuq * add a brief version. Add notes on the difference between normal bitcoin protocol and the mining protocol. Signed-off-by: Mahmoud Maatuq * update enable_payload_stat test after dev rebasing. Signed-off-by: Mahmoud Maatuq --------- Signed-off-by: Mahmoud Maatuq --- src/lib/protocols/bitcoin.c | 71 +++++++++++++++++++++++++++++++++++++++++++++ src/lib/protocols/mining.c | 17 ----------- 2 files changed, 71 insertions(+), 17 deletions(-) create mode 100644 src/lib/protocols/bitcoin.c (limited to 'src/lib/protocols') diff --git a/src/lib/protocols/bitcoin.c b/src/lib/protocols/bitcoin.c new file mode 100644 index 000000000..2154e912a --- /dev/null +++ b/src/lib/protocols/bitcoin.c @@ -0,0 +1,71 @@ +/* + * bitcoin.c + * + * Copyright (C) 2018-23 - ntop.org + * + * 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 . + * + */ +#include "ndpi_protocol_ids.h" +#define NDPI_CURRENT_PROTO NDPI_PROTOCOL_BITCOIN +#include "ndpi_api.h" + +/*https://en.bitcoin.it/wiki/Protocol_documentation*/ +#define MAIN_NET_MAGIC 0xF9BEB4D9 +#define TEST_NET_MAGIC 0xFABFB5DA +#define TEST_3_NET_MAGIC 0x0B110907 +#define SIG_NET_MAGIC 0x0A03CF40 +#define NAME_COIN_NET_MAGIC 0xF9BEB4FE + +static void ndpi_search_bitcoin(struct ndpi_detection_module_struct *ndpi_struct, + struct ndpi_flow_struct *flow) { + NDPI_LOG_DBG(ndpi_struct, "search BITCOIN\n"); + struct ndpi_packet_struct *packet = &ndpi_struct->packet; + if(packet->payload_packet_len >= 4) { + if(packet->tcp->source == htons(8333) || + packet->tcp->dest == htons(8333)) { + u_int32_t ntoh_to_match = ntohl(*(u_int32_t*)packet->payload); + switch (ntoh_to_match) { + case MAIN_NET_MAGIC: + case TEST_NET_MAGIC: + case TEST_3_NET_MAGIC: + case SIG_NET_MAGIC: + case NAME_COIN_NET_MAGIC: + ndpi_set_detected_protocol(ndpi_struct, flow, NDPI_PROTOCOL_BITCOIN, NDPI_PROTOCOL_UNKNOWN, NDPI_CONFIDENCE_DPI); + NDPI_LOG_INFO(ndpi_struct, "found BITCOIN\n"); + return; + } + } + } + NDPI_EXCLUDE_PROTO(ndpi_struct, flow); +} + +/* ************************************************************************** */ + +void init_bitcoin_dissector(struct ndpi_detection_module_struct *ndpi_struct, + u_int32_t *id) +{ + ndpi_set_bitmask_protocol_detection("Bitcoin", ndpi_struct, *id, + NDPI_PROTOCOL_BITCOIN, + ndpi_search_bitcoin, + NDPI_SELECTION_BITMASK_PROTOCOL_V4_V6_TCP_WITH_PAYLOAD_WITHOUT_RETRANSMISSION, + SAVE_DETECTION_BITMASK_AS_UNKNOWN, + ADD_TO_DETECTION_BITMASK); + + *id += 1; +} + diff --git a/src/lib/protocols/mining.c b/src/lib/protocols/mining.c index c6a3420b7..ba1da1454 100644 --- a/src/lib/protocols/mining.c +++ b/src/lib/protocols/mining.c @@ -98,23 +98,6 @@ static void ndpi_search_mining_tcp(struct ndpi_detection_module_struct *ndpi_str /* Check connection over TCP */ if(packet->payload_packet_len > 10) { - if(packet->tcp->source == htons(8333) || - packet->tcp->dest == htons(8333)) { - /* - Bitcoin - - bitcoin.magic == 0xf9beb4d9 || bitcoin.magic == 0xfabfb5da - */ - u_int32_t magic = htonl(0xf9beb4d9), magic1 = htonl(0xfabfb5da), *to_match = (u_int32_t*)packet->payload; - - if((*to_match == magic) || (*to_match == magic1)) { - ndpi_snprintf(flow->flow_extra_info, sizeof(flow->flow_extra_info), "%s", "ETH"); - ndpi_set_detected_protocol(ndpi_struct, flow, NDPI_PROTOCOL_MINING, NDPI_PROTOCOL_UNKNOWN, NDPI_CONFIDENCE_DPI); - cacheMiningHostTwins(ndpi_struct, flow); - return; - } - } - if((packet->payload_packet_len > 300) && (packet->payload_packet_len < 600) && (packet->payload[2] == 0x04)) { -- cgit v1.2.3