AUTOSAR >> SOME/IP

如何使用SCAPY產生TCP PCAP

---

參考資料：
1. standards
2. SOME/IP
3. Transport
4. ServiceDiscovery

main.py

import os
import struct
from scapy.all import *
import scapy.all as scapy
 
data = bytearray(
    b"\xff\xff\x81\x00"
    b"\x00\x00\x00\x20"
    b"\x00\x00\x00\x01"
    b"\x01\x01\x02\x00"

    b"\x80\x00\x00\x00" # service discovery
    b"\x00\x00\x00\x10"

    b"\x06\x00\x00\x00" # entry
    b"\x12\x34\x56\x78" 
    b"\x00\x00\x00\x03"
    b"\x00\x00\x44\x65"
)

packet = scapy.Ether() / scapy.IP() / scapy.TCP()
packet[scapy.IP].dst = "192.168.0.1"
packet[scapy.IP].src = "192.168.0.2"
packet[scapy.TCP].dport = 1234
packet[scapy.TCP].sport = 5678
packet[scapy.TCP].flags = 'S'
packet[scapy.TCP].payload = Packet(data)

try:
    scapy.wrpcap("test.pcap", packet, append=False)
except Exception as e:
    print(f"ERR: {e}")

執行

$ python3 ./main.py
$ wireshark test.pcap

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