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A toolkit for injecting synthetic attacks into PCAP files.
As Intrusion Detection Systems encounter growing importance in the area of network security, the need of high quality network datasets for evaluation against real-world attacks rises.
Comparability of the results must be ensured by use of publicly available datasets. Existing datasets, however, suffer from several disadvantages. Often they do not provide ground truth knowledge, consist of outdated traffic and do not contain any payload because of privacy reasons. Moreover, frequently datasets do not contain latest attacks and missing attack labels make it difficult to identify existing attacks and enable a transparent comparison of Intrusion Detection Systems.
The ID2T toolkit was first proposed in  and  and targets the injection of attacks into existing network datasets. At first, it analyzes a given dataset and collects statistics from it. These statistics are stored into a local database. Next, these statistics can be used to define attack parameters for the injection of one or multiple attacks. Finally, the application creates the required attack packets and injects them into the existing file. Resulting in a new PCAP with the injected attacks and a label file indicating the position (timestamps) of the first and last attack packet.
ID2T was also presented in Blackhat Europe 2017 as part of the Arsenal session (https://www.blackhat.com/eu-17/arsenal/schedule/index.html).
ID2T is written using Python 3 and C++ 11. The main logic is programmed in Python whereas performance critical components are programmed in C++11. The C++11 module uses the Libtins library. The python and c++ modules interact with each other through the pybind11 library.
The following packages/libraries are required to compile the ID2T C++ modules
cmake(minimum version 2.8)
libtins(minimum version 3.4)
sqlite(minimum version 3.0)
coreutils(needed for greadlink)
The following python packages are required to run ID2T. Install the packages with your preferred package manager. For example, you can use pip3 (pip for python 3). Install pip3 in ubuntu with
apt install python3-pip and install the packages with
sudo pip3 install <packagename>.
SciPy Stack(see installation instructions)
The minimum version stated in the previous requirements are the versions we used in the development of ID2T. Other (older) versions might also work; however, we can neither guarantee nor support them. Furthermore, some compilation scripts would need to be manually modified to accommodate these older versions.
ID2T provides a dependency installation script, which is called during the execution of
Clone the repository to get started with the installation:
git clone https://git.tk.informatik.tu-darmstadt.de/SPIN/ID2T-toolkit
Install dependencies, initialize submodules, build the C++ modules and create the ID2T executables:
Or initialize its submodules manually:
git submodule init git submodule update
To skip dependency installation use the
Run ID2T with the command
Run unit tests with the command
Run efficiency tests with the command
In this section, we provide examples on how ID2T is used.
In the following we inject the PortscanAttack into the dataset pcap_capture.pcap:
./id2t -i /home/user/pcap_capture.pcap -a PortscanAttack ip.src=192.168.178.2 mac.src=32:08:24:DC:8D:27 inject.at-timestamp=1476301843
Explanation: The parameter
-i/--input takes the path to the PCAP file. This triggers the statistics calculation of the file. After the calculation, the statistics are stored into a SQLite database. If the statistics were already computed in an earlier run, the data is retrieved from the generated database. This saves time as the calculation of the statistics may take long time - depending on the PCAP file size.
An attack can be injected by providing
-a/--attack followed by the attack name and the attack parameters. The available attacks and the allowed attack parameters vary, see the attack-specific wiki articles for a reference of supported attack parameters. The parameter
-a/--attack can be provided multiple times for injection of multiple attacks. In this case the attacks are injected sequentially.
After injecting the attack, the application generates a XML label file containing the timestamps of the first and last attack packet. The file name is equal to the output file, except with
_labels.xml as suffix.
The toolkit recognizes if the input dataset has an associated label file. This requires a file naming according to the aforementioned scheme, e.g., mydataset.pcap and mydataset_labels.xml. In this case ID2T parses the label file and the resulting output label file contains the labels from the input label file plus the labels from the recently added attack(s).
Whenever ID2T processes a pcap file, it creates a database detailing many things related to the network traffic it has processed. These details can be seen using the query mode of ID2T. To specify a query against a pcap file, use the option `
-q/--query. For example, if we want to know the IP address with the most activity in the pcap file 'test.pcap' we can issue the command:
./id2t -i test.pcap -q 'most_used(ipAddress);'
The query mode serves as a place where standard SQL queries (known as user-defined queries) can be issued against the database created for a pcap file. Furthermore, the most commonly used queries are provided with special keywords known as named queries.
SELECT ipAddress FROM ip_statistics WHERE pktsSent > 1000
The named queries can be further divided into two classes:
random(...)returns a randomly chosen element of the list
-q/--query is called without an argument, the application enters into REPL query mode. This mode is like a standard read-eval-print-loop (REPL) for SQL queries. In this mode, the user can repeatedly input queries (each query must finish with a ";" (semicolon)); send the query by pressing ENTER and see the response in the terminal:
Example query mode usage:
./id2t -i test.pcap -q
Input file: /home/user/pcap_capture.pcap Located statistics database at: /home/pjattke/ID2T_data/db/99/137/81a0a71b0f36.sqlite3 Loaded file statistics in 0.00 sec from statistics database. Entering into query mode... Enter statement ending by ';' and press ENTER to send query. Exit by sending an empty query.. most_used(ipAddress); Query 'most_used(ipAddress);' returned: 18.104.22.168 avg(ttlValue); Query 'avg(pktsSent);' returned: 5.322
./id2t -h, a list of available application arguments with a short description is shown.
Selectors are named queries which return a single element or a list of elements, depending on the values in the database and the query.
For example, the named query
most_used(ipAddress) may return a single IP address if the most used IP address, based on the sum of packets sent and received, is unique. If there are multiple IP addresses with the same number of packets sent plus packets received, a list of IP addresses is returned. As the user cannot know how many values are returned, the extractors are ignored if the result is a single element.
most_used(ipAddress | macAddress | portNumber | protocolName | ttlValue) least_used(ipAddress | macAddress | portNumber | protocolName | ttlValue) avg(pktsReceived | pktsSent | kbytesSent | kbytesReceived | ttlValue | mss) all(ipAddress | ttlValue | mss | macAddress | portNumber | protocolName)
There are also parameterizable selectors which take conditions as input. Following two examples to show the syntax by example:
ipAddress(macAddress=AA:BB:CC:DD:EE:FF, pktsSent > 1000, kbytesReceived < 1000) -> returns one or multiple IP addresses matching the given criterias Supports the fields: macAddress, ttlValue, ttlCount, portName, portNumber, portDirection, kbytesSent, kbytesReceived, pktsSent, pktsReceived, macAddress(ipAddress=192.168.178.2) -> returns the MAC address matching the given criteria Supports the field: ipAddress
Parameterizable selectors also allow for specifying another query in the condition instead of a specific value, like the following example demonstrates:
macAddress(ipAddress in most_used(ipAddress))
Conditions inside parameterizable selectors can contain all the usual comparison operators (<, <=, =, >=, >) when the right side of the condition is a single value. If the right side is a list, such as the return value of e.g. most_used(), the
in-operator is to be used instead, unless the list is reduced to a single value by the use of an extractor.
The following examples provide a demonstration of how lists can be used inside parameterizable selectors:
macAddress(ipAddress in ipAddress(pktssent > 1)) -> Returns the MAC addresses of all IP addresses that sent more than one packet macAddress(ipAddress = random(ipAddress(pktssent > 1))) -> Returns the MAC address of a random IP address out of all IP addresses that sent more than one packet macAddress(ipAddress in [192.168.189.1,192.168.189.143]) -> Returns the MAC address of all IP addresses in the provided list
Extractors are to be used on the result of a named query. If the result is a list, applying an extractor reduces the result set to a single element. If the result is already a single element, the extractor is ignored.
random(...) -> returns a random element from a list first(...) -> returns the first element from a list last(...) -> returns the last element from a list
Named queries are designed to be combined with extractors, like
Dr. Emmanouil Vasilomanolakis - ID2T idea, guidance and suggestions during development
Carlos Garcia - ID2T idea, guidance and suggestions during development
Aidmar Wainakh - analysis and development of attacks as part of his Master Thesis
Leon Böck - guidance and suggestions during development of Membership Management Communication Attack
Nikolay Milanov - development of first prototype within his Master Thesis
Patrick Jattke - development of first public release as part of his Bachelor Thesis
Dustin Born - development of Membership Management Communication Attack
Christof Jugel - development of Membership Management Communication Attack
Marcel Juschak - development of Membership Management Communication Attack
Joshua Kühlberg - development of Membership Management Communication Attack
Denis Waßmann - development of Membership Management Communication Attack
Stefano Acquaviti - development of multiple attacks and general improvements
Jens Keim - development of multiple attacks and general improvements
Roey Regev - development of multiple attacks and general improvements
Stefan Schmidt - development of multiple attacks and general improvements
Jonathan Speth - development of multiple attacks and general improvements
Distributed under the MIT license. See LICENSE for more information.