hacks2learn · September 28, 2024 11:30 · Sep 27, 2024
diff --git a/SilentListener.py b/SilentListener.py
@@ -0,0 +1,60 @@
+import argparse
+import ipaddress
+from os import path
+from time import sleep
+from shlex import split
+from scapy.all import sniff
+from threading import Thread
+from subprocess import Popen, PIPE
+
+valid_ranges = []
+intern_ranges = ["10.0.0.0/8", "172.16.0.0/12", "192.168.0.0/16"]
+
+def listen(args):
+    global valid_ranges
+    if path.isfile(args.output):
+        valid_ranges = open(args.output, "r").read().splitlines()
+        print(f"Already found ranges:")
+        for ip_range in valid_ranges:
+            print(f"{ip_range}")
+    log_file = open(args.output, "a")
+    print(f'Listening for incoming packets on {args.interface}... Press Ctrl+C to stop.')
+    sniff(iface=args.interface, prn=lambda packet: packet_callback(packet, log_file), store=0)
+
+def packet_callback(packet, log_file):
+    global valid_ranges
+    if packet.haslayer("IP"):
+        for ip_range in intern_ranges:
+            if ipaddress.ip_address(packet["IP"].src) in ipaddress.ip_network(ip_range, strict=False):
+                slash24range = f'{".".join(packet["IP"].src.split(".")[:3])}.0/24'
+                # print(slash24range, valid_ranges, slash24range in valid_ranges)
+                if slash24range not in valid_ranges:
+                    valid_ranges.append(slash24range)
+                    log_file.write(f"{slash24range}\n")
+                    log_file.flush()
+                    print(slash24range)         
+
+def scan(args):
+    print("Launching Masscan on internal ranges")
+    if args.rate: 
+        print(args.rate)
+        rate = args.rate
+    else: 
+        rate = "100000"
+    command = f"xterm -e masscan 192.168.0.0/16 10.0.0.0/8 172.16.0.0/12 -p 22,80,443,445,3389 --rate {rate}"
+    Popen(split(command) , stdout=PIPE, stderr=PIPE)
+
+
+if __name__ == "__main__":
+    parser = argparse.ArgumentParser()
+    parser.add_argument("-i", help="Interface on which to listen and run scan", dest="interface", required=True)    
+    parser.add_argument("-o", help="File in which to write found ranges", dest="output", required=True)
+    parser.add_argument("--scan", help="Launch internal ranges masscan", dest="scan", action="store_true")
+    parser.add_argument("--rate", help="Scan rate (the more the faster)", dest="rate")
+
+    args = parser.parse_args()
+
+    Thread(target=listen, args=(args,)).start()
+    sleep(2)
+    if args.scan:
+        Thread(target=scan, args=(args,)).start()