In this scan, the ACK, SYN, URG, RST, and FIN flags are all set at once on the same packet. The issue with this is that since all the flags are set, the target system may have difficulties in interpreting the packets it has received. The following diagram shows this process:
XMAS tree scan
To execute an XMAS scan, select XMAS from the list in the nmap window in the NetHunter app and enter the target IP address:
XMAS scan selection from dropdown