Detect Pwnagotchi

Detect Pwnagotchi

Menu Path

WiFi>Sniffers>Detect Pwnagotchi

Info

The ESP32 is able to filter captured WiFi traffic to display the information of any active pwnagotchis within range of this device.

Filtering Traffic

Once a packet is captured, it undergoes a series of checks and enumerations to extract the desired information.

The packet must be a beacon frame. If the packet is a beacon frame, the source MAC must be de:ad:be:ef:de:ad.

    if ((snifferPacket->payload[0] == 0x80) && (display_obj.display_buffer->size() == 0))
    {
      char addr[] = "00:00:00:00:00:00";
      getMAC(addr, snifferPacket->payload, 10);
      src.concat(addr);
      if (src == "de:ad:be:ef:de:ad") {

Information about the active pwnagotchi is stored in the ESSID of the beacon it sends as a JSON object.
The json must be decoded to extract the desired information.

        // Load json
        DynamicJsonBuffer jsonBuffer;
        JsonObject& json = jsonBuffer.parseObject(essid);
        if (!json.success()) {
          Serial.println("\nCould not parse Pwnagotchi json");
          display_string.concat(essid);
        }
        else {
          Serial.println("\nSuccessfully parsed json");
          String json_output;
          json.printTo(json_output);
          Serial.println(json_output);
          display_string.concat(json["name"].as<String>() + " pwnd: " + json["pwnd_tot"].as<String>());
        }

For each pwnagotchi packet captured, the following information is displayed on screen:

• Pwnagotchi name
• Number of all networks Pwned

All pwnagotchi packets will be saved to an attached SD card in a PCAP file.

This function can be exited by touching the screen. Once exited, the user will be sent back to the menu.