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feat: adding other TCP scan rules

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Oxbian
2024-11-19 22:15:30 -05:00
parent 3e75cb8927
commit 09abb7e20f
7 changed files with 139 additions and 5 deletions
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4
idps/rules/TCP/Scan/tcpconnectscan.py
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@ -5,7 +5,7 @@ import time
def rule(packet, tcp_packets, db):
"""Règle TCPConnect Scan:
Un scan TCP connect va effectuer une connexion TCP en entier sur chaque port scanné.
Si le port est ouvert le serveur acceptera la connexion SYN -> SYN ACK -> ACK -> Reset -> ACK
Si le port est ouvert le serveur acceptera la connexion SYN -> SYN ACK -> ACK -> Reset ACK
Sinon le port est fermé et le serveur refusera la connexion SYN -> Reset ACK
"""
@ -18,7 +18,7 @@ def rule(packet, tcp_packets, db):
rule.seuil = db.get_key("tcpconnectscan_count", 5)
if tcp_packets.count_packet_of_type(["S", "SA", "A", "RA"], rule.time_window, True) + tcp_packets.count_packet_of_type(["S", "RA"], rule.time_window, True) >= rule.seuil:
db.send_alert(datetime.now(), 5, None, "TCPConnect Scan", packet['IP'].src, packet['IP'].dst, proto="TCP", reason="Détection de nombreux patterns de Syn->SynACK->ACK->Reset->ACK et Syn->Reset ACK", act="Alerte")
db.send_alert(datetime.now(), 5, None, "TCPConnect Scan", packet['IP'].src, packet['IP'].dst, proto="TCP", reason="Détection de nombreux patterns de Syn->SynACK->ACK->Reset ACK et Syn->Reset ACK", act="Alerte")
print(f"Alerte, seuils dépassés, risque de TCPConnectScan")
rule.cooldown = time.time()