Add 7.61 HV exploit.

shellcode_0607/utils.c

@@ -0,0 +1,35 @@
+#include "utils.h"
+#include <cpuid.h>
+
+uint64_t vtophys_custom(uint64_t va, uint64_t cr3_custom) {
+  uint64_t table_phys = cr3_custom & 0xFFFFFFFF;
+
+  for (int level = 0; level < 4; level++) {
+    int shift = 39 - (level * 9);
+    uint64_t idx = (va >> shift) & 0x1FF;
+    uint64_t entry;
+    uint64_t entry_va = PAGE_PA(table_phys) + idx * 8;
+
+    entry = *(uint64_t *)entry_va;
+
+    if (!PAGE_P(entry))
+      return 0;
+
+    if ((level == 1 || level == 2) && PAGE_PS(entry)) {
+      uint64_t page_size = P_SIZE(level);
+      return PAGE_PA(entry) | (va & (page_size - 1));
+    }
+
+    if (level == 3)
+      return PAGE_PA(entry) | (va & 0xFFF);
+
+    table_phys = PAGE_PA(entry);
+  }
+  return 0;
+}
+
+void wrmsr(uint32_t msr, uint64_t val) {
+  uint32_t low = val & 0xFFFFFFFF;
+  uint32_t high = val >> 32;
+  __asm__ __volatile__("wrmsr" : : "a"(low), "d"(high), "c"(msr));
+}