update readme

implant/core/antivm_darwin.go

@@ -0,0 +1,104 @@
+//go:build antivm && darwin
+
+package core
+
+import (
+	"os/exec"
+	"strings"
+)
+
+func init() {
+	registerDarwinChecks()
+}
+
+func registerDarwinChecks() {
+	// 100%
+	registerCheck("hwmodel", hwModelMac, 100)
+	registerCheck("mac_iokit", macIOKit, 100)
+	registerCheck("ioreg_grep", ioregGrep, 100)
+	registerCheck("mac_sip", macSIP, 100)
+	registerCheck("mac_sys_profiler", macSysProfiler, 100)
+
+	// 50%
+	registerCheck("amd_sev_msr_darwin", amdSEVMSRDarwin, 50)
+
+	// 15%
+	registerCheck("mac_memsize", macMemSize, 15)
+}
+
+func runCmd(name string, args ...string) string {
+	cmd := exec.Command(name, args...)
+	out, err := cmd.Output()
+	if err != nil {
+		return ""
+	}
+	return strings.TrimSpace(string(out))
+}
+
+func hwModelMac() bool {
+	model := runCmd("sysctl", "-n", "hw.model")
+	return !strings.HasPrefix(strings.ToLower(model), "mac")
+}
+
+func macIOKit() bool {
+	out := runCmd("ioreg", "-l")
+	lower := strings.ToLower(out)
+	for _, s := range []string{"virtualbox", "vmware", "qemu", "kvm", "vbox", "parallel"} {
+		if strings.Contains(lower, s) {
+			return true
+		}
+	}
+	return false
+}
+
+func ioregGrep() bool {
+	out := runCmd("ioreg", "-l")
+	if out == "" {
+		return false
+	}
+	lower := strings.ToLower(out)
+	return strings.Contains(lower, "virtualbox") || strings.Contains(lower, "vmware") ||
+		strings.Contains(lower, "qemu") || strings.Contains(lower, "parallels")
+}
+
+func macSIP() bool {
+	// Check System Integrity Protection status
+	sip := runCmd("csrutil", "status")
+	if strings.Contains(sip, "disabled") || strings.Contains(sip, "unknown") {
+		return false
+	}
+	// Check if hv is present
+	hv := runCmd("sysctl", "-n", "kern.hv_support")
+	return hv == "1"
+}
+
+func macSysProfiler() bool {
+	out := runCmd("system_profiler", "SPHardwareDataType")
+	lower := strings.ToLower(out)
+	return strings.Contains(lower, "virtualbox") || strings.Contains(lower, "vmware") ||
+		strings.Contains(lower, "qemu") || strings.Contains(lower, "parallels")
+}
+
+func amdSEVMSRDarwin() bool {
+	// macOS doesn't have /dev/cpu, so check via sysctl
+	model := runCmd("sysctl", "-n", "machdep.cpu.brand_string")
+	return strings.Contains(model, "AMD EPYC") || strings.Contains(model, "AMD Ryzen")
+}
+
+func macMemSize() bool {
+	// Check if memory is too low (< 2GB would be suspicious for macOS)
+	out := runCmd("sysctl", "-n", "hw.memsize")
+	if out == "" {
+		return false
+	}
+
+	// Parse bytes to GB
+	var bytes uint64
+	for _, c := range out {
+		bytes = bytes*10 + uint64(c-'0')
+	}
+	gb := bytes / 1024 / 1024 / 1024
+	return gb < 2
+}
+
+