Add more common checks

Author: ShellCode33

vmdetect/common.go

@@ -4,8 +4,11 @@ import (
 	"bufio"
 	"fmt"
 	"github.com/klauspost/cpuid"
+	"github.com/shirou/gopsutil/mem"
 	"io"
+	"net"
 	"os"
+	"runtime"
 	"strings"
 )
 
@@ -50,14 +53,67 @@ func DoesFileContain(file *os.File, stringsToBeFound ...string) bool {
 	}
 }
 
+/*
+Tries to detect a VM using its network configuration.
+*/
+func checkNetworking() (bool, string) {
+
+	blacklistedMacAddressPrefixes := []string{
+		"00:1C:42", // Parallels
+		"08:00:27", // VirtualBox
+		"00:05:69", // |
+		"00:0C:29", // | > VMWare
+		"00:1C:14", // |
+		"00:50:56", // |
+		"00:16:E3", // Xen
+	}
+
+	interfaces, err := net.Interfaces()
+
+	if err != nil {
+		return false, err.Error()
+	}
+
+	for _, iface := range interfaces {
+
+		macAddr := iface.HardwareAddr.String()
+		if macAddr != "" {
+			for _, prefix := range blacklistedMacAddressPrefixes {
+				if strings.HasPrefix(macAddr, prefix) {
+					return true, fmt.Sprintf("Known MAC address prefix (%v)", prefix)
+				}
+			}
+		}
+
+		if iface.Name == "Vmware" {
+			return true, "Vmware found as network interface name"
+		}
+	}
+
+	return false, ""
+}
+
 /*
 Tries to detect VMs using cross-platform techniques.
 */
 func CommonChecks() (bool, string) {
+
 	// https://lwn.net/Articles/301888/
 	if cpuid.CPU.VM() {
 		return true, "CPU Vendor (cpuid space)"
 	}
 
+	if vmDetected, how := checkNetworking(); vmDetected {
+		return true, how
+	}
+
+	vmStat, err := mem.VirtualMemory()
+
+	if err != nil {
+		PrintError(err)
+	} else if runtime.NumCPU() < 3 && vmStat.Total < 2048000 {
+		return true, fmt.Sprintf("Low resources detected (%v CPU and %v bytes of RAM", runtime.NumCPU(), vmStat.Total)
+	}
+
 	return false, "nothing"
 }