If a file transfer is found (e.g., via FTP or an unencrypted HTTP download), reconstruct the file.
If the traffic is encrypted (HTTPS) and a key log file ( SSLKEYLOGFILE ) is provided in the RAR, load it into Wireshark ( Edit -> Preferences -> Protocols -> TLS ) to decrypt the traffic. Flags usually follow a format like CTF... or FLAG... . FullCapture for Festerowy.rar
: The name "Festerowy" might refer to a specific user, a hostname, or a keyword used in the traffic. If a file transfer is found (e
Use grep on the extracted strings: strings capture.pcap | grep -i "flag" . Common "Gotchas" in this Challenge or FLAG
: Check for DNS Tunneling. If you see many long, encoded subdomains (e.g., ://example.com ), data is being exfiltrated through DNS queries. ICMP : Check for data appended to ping packets. Identifying "Festerowy"
: Data might be Base64 encoded or Hex encoded within the packets.