add Wi-Fi Provisioning King of the Hill info

pages/RF-CTF-King-Of-The-Hill.md

@@ -1 +1,17 @@
+# Wi-Fi Provisioning King of the Hill
+
+An ESP32 will act as an IoT device that needs to be connected to a network to perform it's function.
+In the un-provisioned state it provides an interface via BLE to configure the Wi-Fi settings of the target network.
+Once connected to the configured Wi-Fi network the ESP32 will make an HTTP GET request to: `hill.rfhackers.com/king.txt`
+The HTTP response must be a 200 and the body shall contain your team name.
+Upon success, failure, or timeout, the ESP32 will disconnect and revert to it's un-provisioned state.
+
+You must:
+- Host a Wi-Fi network for the ESP32 to connect to
+- Scan for BLE devices matching: `RFHS_XXXX`
+- Calculate CRC32("RFHS_XXXX") for Proof of Possession key 
+	- Hint: `CRC32("RFHS_1234") = 0xA84590D6` the proof of possession would be "a84590d6"
+- [Provision](https://docs.espressif.com/projects/esp-idf/en/latest/esp32/api-reference/provisioning/wifi_provisioning.html) the ESP32 via BLE with the settings for their Wi-Fi network
+- Successfully respond to the HTTP request made by the client in the allotted time
+- Lather, rinse, repeat
 

pages/_Sidebar.md

@@ -9,6 +9,8 @@
 
  [RF CTF WiFi Challenges](RF-CTF-WIFI-Challenges)
 
+ [RF CTF King of the Hill](RF-CTF-King-Of-The-Hill)
+
  [RF CTF Foxhunt](RF-CTF-Foxhunt)
 
  [RF CTF RFID-NFC Challenges](RF-CTF-RFID-NFC-Challenges)