First module of nos0s works

.gitignore

@@ -0,0 +1,2 @@
+config.yaml
+__pycache__

common/__init__.py

@@ -0,0 +1 @@
+# comment to be gittable

common/config.yaml

@@ -1,3 +0,0 @@
-server:
-  host: '127.0.0.1'
-  port: 35293

common/sample_config.yaml

@@ -0,0 +1,6 @@
+server:
+    host: "127.0.0.1"
+    port: 35293
+
+sniff:
+    host: "127.0.0.1"

main.py

@@ -1,18 +1,30 @@
-from menu import MenuState
+from menu import MenuState, LeafMenu
+from sniff import udp
+from common import config_loader, log
 
 def init_menus():
     main_menu = MenuState("NOS0S\nselect an option", "NOS0S MAIN")
-    net = MenuState("net attacks", "tools to attack network devices")
+    net = MenuState("net recon", "tools to gain intel on network devices")
+    sniffer = LeafMenu("Sniffer", "Sniffs for network traffic. CTRL+C to cancel.")
+    sniffer.set_action(udp.sniff, (config_loader.config['sniff']['host'], log.warning))
+    net.add_submenu(sniffer)
     main_menu.add_submenu(net)
     return main_menu
 
 
 
 def main():
+    log.set_lvl(log.LogLevel.DEBUG)
     main_menu = init_menus()
     current_menu = main_menu
     while current_menu != None:
-        print(current_menu.display_CLI())
+        display, return_to_parent = current_menu.display_CLI()
+        print(display)
+
+        if(return_to_parent):
+            current_menu = current_menu.nav_to_parent()
+            continue
+        
         res = input('> ')
         if res == 'q':
             break

menu.py

@@ -1,4 +1,3 @@
-
 class MenuState:
     def __init__(self, title, desc):
         self.title = title
@@ -11,14 +10,14 @@ class MenuState:
         menu.parent = self
 
     def display_CLI(self):
-        display_text = f'{self.title}\n'
+        display_text = f'\n{self.title}\n'
         if self.parent != None:
-            display_text += f'  b. Back'
+            display_text += f'  b. Back\n'
         for i in range(0, len(self.subs)):
             sub = self.subs[i]
             display_text += f'  {i}. {sub.title}\n'
             display_text += f'    - {sub.description}\n'
-        return display_text
+        return display_text, False
     
     def nav_to_sub(self, sub_index):
         if sub_index <= len(self.subs):
@@ -31,23 +30,13 @@ class MenuState:
             return self.parent
         else:
             return self
+        
 
+class LeafMenu(MenuState):
 
-class LeafMenu(MenuState): 
-    def __init__(self, title, desc):
-        super.__init__(title, desc)
-        self.subs = None
-        self.actions = []
+    def set_action(self, action, args):
+        self.action = action
+        self.args = args
 
-    def add_submenu(self, menu):
-        return 
-    
-    def add_action(self, action):
-        self.actions.append(action)
-    
-    def execute_action(self, act_index):
-        if act_index <= len(self.actions):
-            # what
-            self.actions[act_index]()
-        else:
-            return
+    def display_CLI(self):
+        return self.action(self.args), True

sniff/__init__.py

@@ -0,0 +1 @@
+# comment to be gittable

sniff/ip_ctype.py

@@ -2,6 +2,7 @@ from ctypes import *
 import socket
 import struct 
 import ipaddress
+import os
 
 class IP_ctype(Structure):
     _fields_ = [
@@ -24,6 +25,12 @@ class IP_ctype(Structure):
     def __init__(self, socket_buffer=None):
         self.src_address = socket.inet_ntoa(struct.pack("<L",self.src))
         self.dst_address = socket.inet_ntoa(struct.pack("<L",self.dst))
+        self.protocol_map = {1:"ICMP", 2:"IGMP", 6:"TCP", 17: "UDP"}
+        try:
+            self.protocol = self.protocol_map[self.protocol_num]
+        except Exception as e:
+            print(f'{e} No known protocol for {self.protocol_num}')
+
 
 
 

sniff/ip_struct.py

@@ -21,6 +21,10 @@ class IP_struct:
 
         # map protocol constants to their names
         self.protocol_map = {1:"ICMP", 6:"TCP", 17: "UDP"}
+        try:
+            self.protocol = self.protocol_map[self.protocol_num]
+        except Exception as e:
+            print(f'{e} No known protocol for {self.protocol_num}')
 
 
 # ICMP response packet

sniff/udp.py

@@ -1,16 +1,15 @@
 import socket
 import os
+from .ip_ctype import IP_ctype
 
-HOST = '192.168.50.100'
-
-def udp_single_packet_sniff():
+def udp_single_packet_sniff(host):
     if os.name == 'nt':
         socket_protocol = socket.IPPROTO_IP
     else:
         socket_protocol = socket.IPPROTO_ICMP
 
     sniffer = socket.socket(socket.AF_INET, socket.SOCK_RAW, socket_protocol)
-    sniffer.bind((HOST,0))
+    sniffer.bind((host,0))
     sniffer.setsockopt(socket.IPPROTO_IP, socket.IP_HDRINCL, 1)
 
     # turn on promiscuous mode
@@ -22,11 +21,45 @@ def udp_single_packet_sniff():
     if os.name == 'nt':
         sniffer.ioctl(socket.SIO_RCVALL, socket.RCVALL_OFF)
 
+def sniff(args):
+    (host, event_callback) = args
+    if os.name == 'nt':
+        socket_protocol = socket.IPPROTO_IP
+    else:
+        socket_protocol = socket.IPPROTO_ICMP
 
+    sniffer = socket.socket(socket.AF_INET, socket.SOCK_RAW, socket_protocol)
+    sniffer.bind((host,0))
+    sniffer.setsockopt(socket.IPPROTO_IP, socket.IP_HDRINCL, 1)
+
+    # turn on promiscuous mode
+    if os.name == 'nt':
+        sniffer.ioctl(socket.SIO_RCVALL, socket.RCVALL_ON)
+
+    packets_sniffed = 0
+    try:
+        while True:
+            # read a packet
+            raw_buffer = sniffer.recvfrom(65535)[0]
+            # parse that packet
+            ip_header = IP_ctype(raw_buffer[0:20])
+
+            try:
+                event_callback(f'Protocol: {ip_header.protocol}\t{ip_header.src_address} -> {ip_header.dst_address}')
+                packets_sniffed += 1
+            except AttributeError as e:
+                continue
+            
+    except KeyboardInterrupt:
+        if os.name == 'nt':
+            sniffer.ioctl(socket.SIO_RCVALL, socket.RCVALL_OFF)
+        return f'Packets Sniffed: {packets_sniffed}'
 
 
 def main():
-    udp_single_packet_sniff()
+    host = input('Host IP > ')
+    udp_single_packet_sniff(host)
+    sniff((host, print))
 
 
 if __name__ == '__main__':