RF CTF King Of The Hill

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 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