added wifi scanner tutorial

Author: x4nth055

README.md

@@ -13,6 +13,7 @@ This is a repository of all the tutorials of [The Python Code](https://www.thepy
 -[Simple Network Scanner](https://www.thepythoncode.com/article/building-network-scanner-using-scapy). ([code](scapy/network-scanner))
 -[Writing a DNS Spoofer](https://www.thepythoncode.com/article/make-dns-spoof-python). ([code](scapy/dns-spoof))
 -[How to Sniff HTTP Packets in the Network using Scapy in Python](https://www.thepythoncode.com/article/sniff-http-packets-scapy-python). ([code](scapy/http-sniffer))
+-[How to Build a WiFi Scanner in Python using Scapy](https://www.thepythoncode.com/article/building-wifi-scanner-in-python-scapy). ([code](scapy/wifi-scanner))
 -[Writing a Keylogger in Python from Scratch](https://www.thepythoncode.com/article/write-a-keylogger-python). ([code](ethical-hacking/keylogger))
 -[Making a Port Scanner using sockets in Python](https://www.thepythoncode.com/article/make-port-scanner-python). ([code](ethical-hacking/port_scanner))
 -[How to Create a Reverse Shell in Python](https://www.thepythoncode.com/article/create-reverse-shell-python). ([code](ethical-hacking/reverse_shell))

scapy/wifi-scanner/README.md

@@ -0,0 +1,7 @@
+# [How to Build a WiFi Scanner in Python using Scapy](https://www.thepythoncode.com/article/building-wifi-scanner-in-python-scapy)
+To run this:
+-`pip3 install -r requirements.txt`
+- Scan nearby networks using `wlan0mon` interface:
+```
+ python wifi_scanner.py wlan0mon
+ ```

scapy/wifi-scanner/requirements.txt

@@ -0,0 +1,2 @@
+pandas
+scapy

scapy/wifi-scanner/wifi_scanner.py

@@ -0,0 +1,60 @@
+fromscapy.allimport*
+fromthreadingimportThread
+importpandas
+importtime
+importos
+
+
+# initialize the networks dataframe that will contain all access points nearby
+networks=pandas.DataFrame(columns=["BSSID", "SSID", "dBm_Signal", "Channel", "Crypto"])
+# set the index BSSID (MAC address of the AP)
+networks.set_index("BSSID", inplace=True)
+
+defcallback(packet):
+ifpacket.haslayer(Dot11Beacon):
+# extract the MAC address of the network
+bssid=packet[Dot11].addr2
+# get the name of it
+ssid=packet[Dot11Elt].info.decode()
+try:
+dbm_signal=packet.dBm_AntSignal
+except:
+dbm_signal="N/A"
+# extract network stats
+stats=packet[Dot11Beacon].network_stats()
+# get the channel of the AP
+channel=stats.get("channel")
+# get the crypto
+crypto=stats.get("crypto")
+networks.loc[bssid] = (ssid, dbm_signal, channel, crypto)
+
+
+defprint_all():
+whileTrue:
+os.system("clear")
+print(networks)
+time.sleep(0.5)
+
+
+defchange_channel():
+ch=1
+whileTrue:
+os.system(f"iwconfig {interface} channel {ch}")
+# switch channel from 1 to 14 each 0.5s
+ch=ch%14+1
+time.sleep(0.5)
+
+
+if__name__=="__main__":
+# interface name, check using iwconfig
+interface="wlan0mon"
+# start the thread that prints all the networks
+printer=Thread(target=print_all)
+printer.daemon=True
+printer.start()
+# start the channel changer
+channel_changer=Thread(target=change_channel)
+channel_changer.daemon=True
+channel_changer.start()
+# start sniffing
+sniff(prn=callback, iface=interface)