33 lines
808 B
Python
33 lines
808 B
Python
import socket
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# Fill in the right target here
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HOST = "netsec.net.in.tum.de"
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PORT = 20203
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def create_packet(src_ip, dst_ip, protocol, src_port, dst_port) -> str:
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return f"{src_ip},{dst_ip},{protocol},{src_port},{dst_port}"
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def get_flag():
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s = socket.socket(socket.AF_INET, socket.SOCK_STREAM)
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s.connect((HOST, PORT))
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sf = s.makefile("rw") # we use a file abstraction for the sockets
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# TODO
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src_ip = "161.40.12.151"
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dst_ip = "10.0.0.1"
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protocol = "TCP"
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src_port = 7331
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dst_port = 1337
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packet = create_packet(src_ip, dst_ip, protocol, src_port, dst_port)
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print(f"Sending packet: {packet}")
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sf.write(packet + "\n")
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sf.flush()
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response = sf.readline().strip()
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print(f"Server response: {response}")
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if __name__ == "__main__":
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get_flag()
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