using filter:
ip.dst==192.168.100.123
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November 12, 2021 04:01
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using scapy create tcp packet and catch it by wireshark
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| from scapy.all import * | |
| def main(): | |
| """ | |
| """ | |
| packet = IP(dst="192.168.100.123")/TCP()/"from scapy packet" | |
| send(packet) | |
| def packet_with_seq_n(): | |
| packet = IP(dst="192.168.100.123", src="192.168.100.144")/TCP(sport=333, dport=222, seq=112344)/"Sequence number 112344" | |
| send(packet) | |
| # we can use sendp to choose different network interface | |
| sendp(packet, iface="en0") | |
| # lsc() can see functions descriptions. | |
| if __name__ == "__main__": | |
| main() | |
| packet_with_seq_n() |
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| import sys | |
| from scapy.all import * | |
| from datetime import datetime | |
| test_content = """HTTP/1.1 200 OK\r\nDate: Wed, 22 Nov 2017 02:13:40 GMT\r\nServer: Apache/2.2.22 (Ubuntu)\r\nLast-Modified: Tue, 21 Nov 2017 04:35:07 GMT\r\nAccept-Ranges: bytes\r\nContent-Length: 177\r\nKeep-Alive: timeout=500, max=100\r\nConnection: Keep-Alive\r\nContent-Type: text/html\r\n\r\n<html><body><h1>It !!!!!!</h1> | |
| <p>This is the default web page for this server.!!!!!</p> | |
| <p>The web server software is running but no content has been added, yet.</p> | |
| </body></html>""" + datetime.now().strftime("%m/%y %H:%M:%S") | |
| def main(): | |
| """""" | |
| dst_ip = sys.argv[1] | |
| dst_port = int(sys.argv[2]) | |
| src_ip = sys.argv[3] | |
| src_port = int(sys.argv[4]) | |
| seq_n = int(sys.argv[5]) | |
| ack_n = int(sys.argv[6]) | |
| ip_id = int(sys.argv[7]) | |
| ip_flags = int(sys.argv[8]) | |
| # build packet | |
| ip = IP(src=src_ip, dst=dst_ip, id=ip_id, flags=ip_flags) | |
| tcp = ip / TCP(sport=src_port, dport=dst_port, flags='PA', | |
| seq=seq_n, ack=ack_n) / test_content | |
| tcp.display() | |
| print("length of packet {}".format(len(tcp))) | |
| send(tcp) | |
| if __name__ == '__main__': | |
| main() |
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what the difference between send-packet.py and send.py?