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Improvements of/over the original rule2alert
Home Page: http://code.google.com/p/rule2alert/
This project forked from pevma/rule2alert
Improvements of/over the original rule2alert
Home Page: http://code.google.com/p/rule2alert/
Description: ============ Rule2Alert parses snort rules and generates packets on the fly that would alert the IDS. It can either write the packets to a pcap or send the packets directly to the IDS. Amended: ======== Rule2Alert parses Suricata and/or Snort specific rules and generates packets on the fly that would alert the IDS. This development has been concentrated on/for Suricata IDPS on top of(adding to) the existing rule2alert code available here -> http://code.google.com/p/rule2alert/ under GNU GPL v2 (http://www.gnu.org/licenses/old-licenses/gpl-2.0.html). This develpment works both for Suricata (http://suricata-ids.org/) and Snort(http://www.snort.org/). Rule2Alert is still in development status. It is an improvement of the original version (alpha) but not all keywords are supported and issues may occur. Please read on carefully. Assumptions: You have python-yaml (apt-get install python-yaml on Ubuntu/Debian like systems) to be able to parse Suricata's config You have Scapy installed on your system You have either Suricata or Snort installed on your system A list of the fixes and improvements → Fixed issues: - dsize:0 – fixed - dsize:>0 fixed - no content in rule – fixed (added) - issue with sid 598 /depth/offset multiple times – fixed - snort config parser - never worked since introduction of new "ipvar", instead of "var" in the snort config Rule language keywords support added: - rawbytes - tag - http_uri - allowed 4K more rule/pcap pairs - flowbits - threshold:..., count 1 - (only "count 1") added - “alert http …..” - “alert ftp …..” - “alert ip …..” New features: - IPv6 support - Dot1Q (VLAN tag ID) - IEEE 802.1Q (**NOTE** latest community Scapy needed - http://hg.secdev.org/scapy-com) - QinQ (double tagged) - IEEE 802.1ad also known as IEEE 802.QinQ (**NOTE** latest community Scapy needed - http://hg.secdev.org/scapy-com) - suricata.yaml parser - logging of separate rules with corresponding pcaps that fail to generate an alert (rule to pcap pair) - logging of separate rules with corresponding pcaps that do generate an alert (rule to pcap pair) - choose(or point) to a custom location for suricata.yaml, suricata binary or log directory (see examples below) --------- EXAMPLE 1 - to make use of the above two (in the rules2alert directory execute): python r2a.py -C /etc/suricata/suricata.yaml -f rules/emerging-all.rules -w test1.pcap -F -T -e 1.1.1.1 -m 192.168.1.1 - given that you have emerging-all.rules in your rules directory under rules2alert. --------- EXAMPLE 2 - VLAN ID , Dot1Q: python r2a.py -C /etc/suricata/suricata.yaml -f /root/Work/Python/rules2alerts/needed/rules/emerging-all.rules -w test1.pcap -F -T -e 1.1.1.1 -m 192.168.1.1 --Dot1Q --------- EXAMPLE 3 - QinQ: python r2a.py -C /etc/suricata/suricata.yaml -f /root/Work/Python/rules2alerts/needed/rules/emerging-all.rules -w test1.pcap -F -T -e 1.1.1.1 -m 192.168.1.1 --QinQ After whch you will have all the rule/pcap pairs under the rules2alert/output directory. --------- EXAMPLE 4 - custom location for suricata.yaml, suricata binary , log directory and Dot1Q enabled: python r2a.py -C /root/Work/tmp/TMP/suricata.yaml -f /root/Work/Python/rules2alerts/needed/rules/emerging-all.rules -w test1.pcap -F -T -e 1.1.1.1 -m 192.168.1.1 -B /usr/bin/suricata -L /root/Work/tmp/TMP/ --Dot1Q --------- EXAMPLE 5 - IPv6 (-6 option) enabled plus custom location for suricata.yaml, suricata binary , log directory using HOME_NET and EXTERNAL_NET from suricata.yaml: python r2a.py -C /etc/suricata/suricata.yaml -f /root/Work/Python/rules2alerts/needed/rules/emerging-all.rules -w test1.pcap -F -T -B /usr/bin/suricata -L /root/Work/tmp/TMP/ -6 You can use the generated output rule/pcap pairs with the RegressionScript - https://github.com/pevma/RegressionScript NOTE: Due to lack of not yet implemented support for some rule language keywords not all 'failed' rules/pcap pairs are real failures.
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