forensics/ph4nt0m_1ntrud3r

forensics/ph4nt0m_1ntrud3r/solve.py

@@ -0,0 +1,20 @@
+#!/usr/bin/env nix-shell
+#!nix-shell -i python3 -p "python3.withPackages (ppkgs: with ppkgs; [ scapy ])"
+
+from scapy.all import *
+from pathlib import Path
+from base64 import b64decode
+
+def main():
+  cap = rdpcap(str(Path(__file__).parent / 'myNetworkTraffic.pcap'))
+
+  sorted_packets = sorted(cap, key = lambda p: p.time)
+  packet_data = [packet.load.decode() for packet in sorted_packets]
+  decoded_data = [b64decode(chunk) for chunk in packet_data]
+  concat_data = b''.join(decoded_data)
+  flag = concat_data[concat_data.find(b'picoCTF'):].decode()
+  print(flag)
+
+
+if __name__ == '__main__':
+    main()