simple compile script so i dont have to type it out each time

compile.sh

@@ -0,0 +1,3 @@
+#!/bin/sh
+go build -o portscraper main.go
+GOOS=windows GOARCH=amd64 go build -o portscraper.exe main.go

main.go

@@ -2,6 +2,7 @@ package main
 
 import (
 	"bufio"
+    "bytes"
 	"encoding/json"
 	"fmt"
 	"net"
@@ -20,7 +21,7 @@ type OpenPort struct {
 }
 
 const batchSize = 255
-
+var minecraftServers []string
 var (
 	printMutex   sync.Mutex
 	fileLock     sync.Mutex
@@ -103,6 +104,86 @@ func identifyServiceAndOS(ip string, port int) string {
 	return ""
 }
 
+func queryMinecraftServer(ip string, port int) string {
+	conn, err := net.DialTimeout("tcp", fmt.Sprintf("%s:%d", ip, port), 3*time.Second)
+	if err != nil {
+		return ""
+	}
+	defer conn.Close()
+	writeVarInt := func(val int) []byte {
+		var out []byte
+		for {
+			temp := byte(val & 0x7F)
+			val >>= 7
+			if val != 0 {
+				temp |= 0x80
+			}
+			out = append(out, temp)
+			if val == 0 {
+				break
+			}
+		}
+		return out
+	}
+
+	protocolVersion := 754
+	serverAddr := ip
+	state := 1
+    // so confusing for me i actually had to comment stuff
+	var payload []byte
+	payload = append(payload, 0x00)                               // fackin packet ID for handshake
+	payload = append(payload, writeVarInt(protocolVersion)...)    // protocol version
+	payload = append(payload, writeVarInt(len(serverAddr))...)    // address length
+	payload = append(payload, []byte(serverAddr)...)              // address
+	payload = append(payload, byte(port>>8), byte(port&0xFF))     // port
+	payload = append(payload, byte(state))                        // next state: status
+
+	packet := append(writeVarInt(len(payload)), payload...)       // full packet = length + payload
+	conn.Write(packet)                                            // send handshake
+	conn.Write([]byte{0x01, 0x00})                                // send status request
+
+	conn.SetReadDeadline(time.Now().Add(3 * time.Second))
+	buf := make([]byte, 4096)
+	n, err := conn.Read(buf)
+	if err != nil || n == 0 {
+		return ""
+	}
+
+    start := bytes.IndexByte(buf, '{')
+    if start == -1 {
+        return ""
+    }
+    jsonData := string(buf[start:n])
+
+    var status struct {
+        Version struct {
+            Name string `json:"name"`
+        } `json:"version"`
+        Description interface{} `json:"description"`
+        Players struct {
+            Online int `json:"online"`
+            Max    int `json:"max"`
+        } `json:"players"`
+    }
+
+    if err := json.Unmarshal([]byte(jsonData), &status); err != nil {
+        return ""
+    }
+
+    desc := ""
+    switch v := status.Description.(type) {
+    case string:
+        desc = v
+    case map[string]interface{}:
+        if text, ok := v["text"].(string); ok {
+            desc = text
+        }
+    }
+
+    return fmt.Sprintf("%s | %d/%d players | %s", status.Version.Name, status.Players.Online, status.Players.Max, desc)
+}
+
+
 func scanPort(ip string, port int, wg *sync.WaitGroup) {
 	printStatusLine(ip, fmt.Sprintf("scanning port %d...", port))
 	conn, err := net.DialTimeout("tcp", fmt.Sprintf("%s:%d", ip, port), 500*time.Millisecond)
@@ -114,7 +195,9 @@ func scanPort(ip string, port int, wg *sync.WaitGroup) {
 			hostname = strings.TrimSuffix(host[0], ".")
 		}
 		fingerprint := identifyServiceAndOS(ip, port)
-
+        if port == 25565 {
+            minecraftServers = append(minecraftServers, ip)
+        }
 		openPortsLock.Lock()
 		openPorts = append(openPorts, OpenPort{ip, port, hostname, fingerprint})
 		line := fmt.Sprintf(" - %s : port %d open - hostname: %s", ip, port, hostname)
@@ -269,4 +352,16 @@ func main() {
 		summaryFile.WriteString("[+] scan summary: open ports found with fingerprints\n")
 	}
 	fmt.Println("[+] scan summary written to summary.txt")
+	if len(minecraftServers) > 0 {
+		safePrintln("[*] querying Minecraft servers on port 25565...")
+		for _, ip := range minecraftServers {
+			status := queryMinecraftServer(ip, 25565)
+			if status != "" {
+				safePrintln("[MC] Server at", ip, "responded.")
+				summaryFile.WriteString("[MC] " + ip + ":25565 " + status + "\n")
+			} else {
+				summaryFile.WriteString("[MC] " + ip + ":25565 no response or malformed\n")
+			}
+        }
+    }
 }