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* Sync unit tests results (#1962)Ivan Nardi2023-05-04
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* Updated pcap detection results after Facebook Reel/Stories supportLuca Deri2023-05-03
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* Make Bittorrent LRU cache IPv6 aware. (#1909)Ivan Nardi2023-04-29
| | | | It was the only remaining LRU cache without IPv6 support. See 81e1ea545ca465cda064e7cc80333fe7f0ef2aff
* Add an heuristic to detect/ignore some anomalous TCP ACK packets (#1948)Ivan Nardi2023-04-25
| | | | | | | | | | | | | | | | | | | In some networks, there are some anomalous TCP flows where the smallest ACK packets have some kind of zero padding. It looks like the IP and TCP headers in those frames wrongly consider the 0x00 Ethernet padding bytes as part of the TCP payload. While this kind of packets is perfectly valid per-se, in some conditions they might be treated by the TCP reassembler logic as (partial) overlaps, deceiving the classification engine. Add an heuristic to detect these packets and to ignore them, allowing correct detection/classification. This heuristic is configurable. Default value: * in the library, it is disabled * in `ndpiReader` and in the fuzzers, it is enabled (to ease testing) Credit to @vel21ripn for the initial patch. Close #1946
* Add "Heroes of the Storm" video game signature detection. (#1949)nikitamishagin2023-04-22
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* Added OICQ dissector. (#1950)Toni2023-04-21
| | | | Signed-off-by: lns <matzeton@googlemail.com> Signed-off-by: Toni Uhlig <matzeton@googlemail.com>
* Added BACnet dissector. (#1940)Toni2023-04-11
| | | | Signed-off-by: lns <matzeton@googlemail.com> Signed-off-by: Toni Uhlig <matzeton@googlemail.com>
* Added Source Engine dissector. (#1937)Toni2023-04-11
| | | | Signed-off-by: lns <matzeton@googlemail.com> Signed-off-by: Toni Uhlig <matzeton@googlemail.com>
* Test files for riit gamesLuca Deri2023-04-11
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* Test multiple `ndpiReader` configurations (#1931)Ivan Nardi2023-04-06
| | | | | | | | | Extend internal unit tests to handle multiple configurations. As some examples, add tests about: * disabling some protocols * disabling Ookla aggressiveness Every configurations data is stored in a dedicated directory under `tests\cfgs`
* MySql: improve detection (#1928)Ivan Nardi2023-04-06
| | | | | Add support for flows with "caching_sha2_password" authentication plugin. See #1924
* H323: fix false positives (#1916)Ivan Nardi2023-04-06
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* add support for gre decapsulation (#1442) (#1921)Maatuq2023-04-04
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* Ookla: rework detection (#1922)Ivan Nardi2023-03-30
| | | | | | | | | | | | | | | | | | | | | | | | | | The logic of the LRU cache has been changed: once we know an ip has connected to an Ookla server, all the following (unknown) flows (for a short time interval) from the same ip to the port 8080 are treated as Ookla ones. Most of the changes in this commit are about introducing the concept of "aggressive detection". In some cases, to properly detect a protocol we might use some statistical/behavior logic that, from one side, let us to identify the protocol more often but, from the other side, might lead to some false positives. To allow the user/application to easily detect when such logic has been triggered, the new confidence value `NDPI_CONFIDENCE_DPI_AGGRESSIVE` has been added. It is always possible to disable/configure this kind of logic via the API. Detection of Ookla flows using plain TLS over port 8080 is the first example of aggressive detection in nDPI. Tested with: * Android 9.0 with app 4.8.3 * Ubuntu 20.04 with Firefox 110 * Win 10 with app 1.15 and 1.16 * Win 10 with Chrome 108, Edge 108 and Firefox 106
* Add another example of custom rules (#1923)Ivan Nardi2023-03-30
| | | | | | Add an example where traffic matching the same IP, but different ports is classified to different protocols. Close #189
* Add support for vxlan decapsulation (#1441) (#1900)Maatuq2023-03-22
| | | Close #1441
* Add a new protocol id for generic Adult Content traffic (#1906)Ivan Nardi2023-03-20
| | | | The list has been taken from https://www.similarweb.com/top-websites/adult/ Fix a GoTo false positive.
* Add a new protocol id for generic advertisement/analytics/tracking stuff (#1904)Ivan Nardi2023-03-20
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* Add a new flow risk about literal IP addresses used as SNI (#1892)Ivan Nardi2023-03-02
| | | | | | | | | | RFC 6066 3: "Literal IPv4 and IPv6 addresses are not permitted in "HostName"." Don't set this risk if we have a valid sub-classification (example: via certificate) Since a similar risk already exists for HTTP hostnames, reuse it, with a more generic name.
* ndpiReader: print how many packets (per flow) were needed to perform full ↵Ivan Nardi2023-03-01
| | | | | | DPI (#1891) Average values are already printed, but this change should ease to identify regressions/improvements.
* Sync unit tests resultsNardi Ivan2023-03-01
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* Moving to bashLuca Deri2023-02-27
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* Updated results after the latest changesLuca Deri2023-02-27
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* in case of failure, failing result files are not listedLuca Deri2023-02-27
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* Sync utests results (#1887)Ivan Nardi2023-02-13
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* Fix packet counters (#1884)Ivan Nardi2023-02-13
| | | | | | We need to keep separete counters to keep tracks of packet numbers with and without any payload. Regression introduced in 5849863ef
* Fix detection of packet direction and NDPI_UNIDIRECTIONAL_TRAFFIC risk (#1883)Ivan Nardi2023-02-13
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* Add Yandex services detection (#1882)0xA50C1A12023-02-09
| | | | | Add Yandex services detection Add VK and Yandex to the TLS certificate match list
* fuzz: some improvements and add two new fuzzers (#1881)Ivan Nardi2023-02-09
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Remove `FUZZING_BUILD_MODE_UNSAFE_FOR_PRODUCTION` define from `fuzz/Makefile.am`; it is already included by the main configure script (when fuzzing). Add a knob to force disabling of AESNI optimizations: this way we can fuzz also no-aesni crypto code. Move CRC32 algorithm into the library. Add some fake traces to extend fuzzing coverage. Note that these traces are hand-made (via scapy/curl) and must not be used as "proof" that the dissectors are really able to identify this kind of traffic. Some small updates to some dissectors: CSGO: remove a wrong rule (never triggered, BTW). Any UDP packet starting with "VS01" will be classified as STEAM (see steam.c around line 111). Googling it, it seems right so. XBOX: XBOX only analyses UDP flows while HTTP only TCP ones; therefore that condition is false. RTP, STUN: removed useless "break"s Zattoo: `flow->zattoo_stage` is never set to any values greater or equal to 5, so these checks are never true. PPStream: `flow->l4.udp.ppstream_stage` is never read. Delete it. TeamSpeak: we check for `flow->packet_counter == 3` just above, so the following check `flow->packet_counter >= 3` is always false.
* Add VK detection (#1880)0xA50C1A12023-02-02
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* Further reduction of the size of some traces used as unit test (#1879)Ivan Nardi2023-01-30
| | | See a944514d. No flow/classification/metadata have been removed.
* ndpiReader: fix packet dissection (CAPWAP and TSO) (#1878)Ivan Nardi2023-01-30
| | | | | | | | | | | | Fix decapsulation of CAPWAP; we are interested only in "real" user data tunneled via CAPWAP. When Tcp Segmentation Offload is enabled in the NIC, the received packet might have 0 as "ip length" in the IPv4 header (see https://osqa-ask.wireshark.org/questions/16279/why-are-the-bytes-00-00-but-wireshark-shows-an-ip-total-length-of-2016/) The effect of these two bugs was that some packets were discarded. Be sure that flows order is deterministic
* fuzz: add a new fuzzer to test serialization/deserialization code (#1876)Ivan Nardi2023-01-27
| | | | | | | | | | Autodetecting the needed buffer size is quite complex (especially with float/double values) so it is mandatory to properly check for `ndpi_snprintf` truncation. These issues have been undetected so far probably because the default buffer is big enough for all common cases. Add an example of usage of `ndpi_deserialize_clone_all()` (taken from `ntopng`)
* Improved connection refused detectionLuca Deri2023-01-25
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* Fix compilation and CI (#1875)Ivan Nardi2023-01-25
| | | | | | | | | | | | | | | | | | | | | ubuntu-latest s390x CI doesn't like snapshot bigger than 262144 bytes. Fix an error found by fuzz CI ``` ================================================================= ==55399==ERROR: AddressSanitizer: SEGV on unknown address 0x000000000008 (pc 0x561e41cb684d bp 0x7ffd54ce3650 sp 0x7ffd54ce3520 T0) ==55399==The signal is caused by a READ memory access. ==55399==Hint: address points to the zero page. #0 0x561e41cb684d in ndpi_network_ptree_match /home/ivan/svnrepos/nDPI/src/lib/ndpi_main.c:2321:41 #1 0x561e41d30879 in ndpi_guess_undetected_protocol /home/ivan/svnrepos/nDPI/src/lib/ndpi_main.c:7767:8 #2 0x561e41ca804d in LLVMFuzzerTestOneInput /home/ivan/svnrepos/nDPI/fuzz/fuzz_config.cpp:104:5 #3 0x561e41bb96a0 in fuzzer::Fuzzer::ExecuteCallback(unsigned char const*, unsigned long) (/home/ivan/svnrepos/nDPI/fuzz/fuzz_config+0x4726a0) (BuildId: d4741c753aafe7c0df2681a592b7df16b38240e9) #4 0x561e41ba3c2f in fuzzer::RunOneTest(fuzzer::Fuzzer*, char const*, unsigned long) (/home/ivan/svnrepos/nDPI/fuzz/fuzz_config+0x45cc2f) (BuildId: d4741c753aafe7c0df2681a592b7df16b38240e9) #5 0x561e41ba96f6 in fuzzer::FuzzerDriver(int*, char***, int (*)(unsigned char const*, unsigned long)) (/home/ivan/svnrepos/nDPI/fuzz/fuzz_config+0x4626f6) (BuildId: d4741c753aafe7c0df2681a592b7df16b38240e9) #6 0x561e41bd22e2 in main (/home/ivan/svnrepos/nDPI/fuzz/fuzz_config+0x48b2e2) (BuildId: d4741c753aafe7c0df2681a592b7df16b38240e9) #7 0x7f94f0e5c082 in __libc_start_main /build/glibc-SzIz7B/glibc-2.31/csu/../csu/libc-start.c:308:16 #8 0x561e41b9eb0d in _start (/home/ivan/svnrepos/nDPI/fuzz/fuzz_config+0x457b0d) (BuildId: d4741c753aafe7c0df2681a592b7df16b38240e9) ```
* Update every ip lists (#1872)Ivan Nardi2023-01-25
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* Add some fuzzers to test other data structures. (#1870)Ivan Nardi2023-01-25
| | | | | | | Start using a dictionary for fuzzing (see: https://llvm.org/docs/LibFuzzer.html#dictionaries). Remove some dead code. Fuzzing with debug enabled is not usually a great idea (from performance POV). Keep the code since it might be useful while debugging.
* Added new risk NDPI_TCP_ISSUESLuca Deri2023-01-24
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* Bittorrent: fix detection over TCP (#1868)Ivan Nardi2023-01-19
| | | Close #1866
* Minor changes in `ndpi_detection_giveup()` (#1861)Ivan Nardi2023-01-19
| | | | | | Check the mining cache at the end of the function, like all the others LRU caches. Rewrite the STUN checks: same identical semantic but in a cleaner way, hopefully
* Sync unit tests results (#1865)Ivan Nardi2023-01-19
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* Shrinked symbolic flow risks labelsLuca Deri2023-01-19
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* POP3: improve detection (#1856)Ivan Nardi2023-01-18
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* Improve support for Snapchat voip calls (#1858)Ivan Nardi2023-01-17
| | | | Latest Snapchat versions use QUICv1 for their audio/video real time sessions. See c50a8d480
* Add detection of Tailscale (#1857)Ivan Nardi2023-01-17
| | | Extend the example of wireguard traffic
* Add Meraki Cloud protocol and improve other protocols (#1854)Ivan Nardi2023-01-17
| | | | | Avoid some LineCall and Jabber false positives. Detect Discord mid flows. Fix Bittorrent detection.
* Fix classification "by-port" (#1851)Ivan Nardi2023-01-17
| | | | | | | | | | | Classification "by-port" should be the last possible effort, *after* having test all the LRU caches. Remove some dead code from `ndpi_detection_giveup()`: `flow->guessed_protocol_id` is never set to any od those voip protocols and at that point in this function we never have both a master *and* a application protocols. Coverage reports (both from unit tests and from fuzzing) confirms that was dead code.
* Improved DGA detectionLuca Deri2023-01-12
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* Reduce the size of some traces used as unit test (#1845)Ivan Nardi2023-01-05
| | | | | | | | | | | | | | | | | | | No traces and no flows has been removed; only long sessions has been reduced, keeping only their first packets. This is quite important in fuzzing systems, since these pcaps are used as initial seed. There is no value in fuzzing long sessions, because only the very first packets are really used/processed by nDPI. Before: ``` du -h tests/pcap/ 200M tests/pcap/ ``` After: ``` du -h tests/pcap/ 98M tests/pcap/ ```
* Fix missing bracket at ppstream (#1843)Ege Çetin2023-01-03
| | | | | | | * add missing bracket * Sync unit test results Co-authored-by: Nardi Ivan <nardi.ivan@gmail.com>
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