📝 Task

Objective:
Manually send a TCP packet with:

  • Source Port: 31337
  • Destination Port: 31337
  • Sequence Number: 31337
  • Acknowledgment Number: 31337
  • TCP Flags: A, P, R, S, F (i.e., APRSF)
  • Destination IP: 10.0.0.2

🧪 Solution using Scapy

🧱 Build the Packet

>>> pkt = Ether()/IP(dst='10.0.0.2')/TCP(sport=31337, dport=31337, seq=31337, ack=31337, flags='APRSF')

Send the Packet

>>> sendp(pkt, iface="eth0")
.
Sent 1 packets.

Flag

pwn.college{YTwIVXPhNyKkQ0tIGJ0vu3vF_KK.QX4YzMzwSM0IzMyEzW}