1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 96 97 98 99 100 101 102 103 104 105 106 107 108 109 110 111 112 113 114 115 116 117 118 119 120 121 122 123 124 125 126 127 128 129 130 131 132 133 134 135 136 137 138 139 140 141 142 143 144 145 146 147 148 149 150 151 152 153 154 155 156 157 158 159 160 161 162 163 164 165 166 167 168 169 170 171 172 173 174 175 176 177 178 179 180 181 182 183 184 185 186 187 188 189 190 191 192 193 194 195 196 197 198 199 200 201 202 203 204 205 206 207 208 209 210 211 212 213 214 215 216 217 218 219 220 221
| #include <ntddk.h> #include <intrin.h>
NTKERNELAPI UCHAR* PsGetProcessImageFileName(PEPROCESS EProcess); NTKERNELAPI UCHAR* PsLookupProcessByProcessId(IN ULONG ulProcId, OUT PEPROCESS* pEProcess); typedef unsigned long DWORD;
typedef struct _SERVICES_DESCRIPTOR_TABLE { PVOID ServiceTableBase; PVOID ServiceCounterTableBase; ULONGLONG ServiceCount; PVOID ParamTableBase; }SERVICES_DESCRIPTOR_TABLE, * PSERVICES_DESCRIPTOR_TABLE;
typedef NTSTATUS(NTAPI* NTOPENPROCESS)( _Out_ PHANDLE ProcessHandle, _In_ ACCESS_MASK DesiredAccess, _In_ POBJECT_ATTRIBUTES ObjectAttributes, _In_opt_ PCLIENT_ID ClientId );
NTOPENPROCESS originNtOpenProcess = NULL; ULONG originAddress[1000];
VOID wpOff(); VOID wpOn(); UINT64 getKeServiceDescirptorTable(); UINT64 getSsdtFunctionAddress(UINT32 index); VOID initinlinehook(UINT32 index); VOID ssdtHook(UINT32 index); UINT64 getFunctionCount(); VOID ssdtUnhook(UINT32 index); NTSTATUS NTAPI myNtOpenProcess( _Out_ PHANDLE ProcessHandle, _In_ ACCESS_MASK DesiredAccess, _In_ POBJECT_ATTRIBUTES ObjectAttributes, _In_opt_ PCLIENT_ID ClientId);
VOID Unload(IN PDRIVER_OBJECT pDriverObject) { ssdtUnhook(0x26); DbgPrint("drive unload"); return STATUS_SUCCESS; }
NTSTATUS DriverEntry(IN PDRIVER_OBJECT pDriverObject, IN PUNICODE_STRING RegistryPath) { int nCount = getFunctionCount(); PSERVICES_DESCRIPTOR_TABLE p = (PSERVICES_DESCRIPTOR_TABLE)getKeServiceDescirptorTable(); PULONG ssdt = (PULONG)p->ServiceTableBase; wpOff(); for (int i = 0; i < nCount; i++) { originAddress[i] = ssdt[i]; } wpOn(); DbgPrint("start_hook"); ssdtHook(0x69); DbgPrint("done!!!"); pDriverObject->DriverUnload = Unload; return STATUS_SUCCESS;
}
VOID wpOff() {
#ifdef _WIN64 __writecr0(__readcr0() & (~(0x10000)));
#else __asm { push eax mov eax, CR0 and eax, not 0x10000 mov CR0, eax pop eax } #endif
}
VOID wpOn() {
#ifdef _WIN64 __writecr0(__readcr0() | 0x10000);
#else __asm { push eax mov eax, CR0 or eax, 0x10000 mov CR0, eax pop eax } #endif
}
NTSTATUS NTAPI myNtOpenProcess( _Out_ PHANDLE ProcessHandle, _In_ ACCESS_MASK DesiredAccess, _In_ POBJECT_ATTRIBUTES ObjectAttributes, _In_opt_ PCLIENT_ID ClientId) { PEPROCESS process = 0; if (STATUS_SUCCESS == PsLookupProcessByProcessId(ClientId->UniqueProcess, &process)) { if (strcmp(PsGetProcessImageFileName(process), "notepad.exe") == 0) { return STATUS_PNP_INVALID_ID; } } return originNtOpenProcess(ProcessHandle, DesiredAccess, ObjectAttributes, ClientId); } UINT64 getKeServiceDescirptorTable() { UINT64 KeServiceDescirptorTable = 0; PUCHAR addrStartSearch = (PUCHAR)__readmsr((ULONG)(0xC0000082)); PUCHAR addrEndSearch = 0; if (*(addrStartSearch + 0x9) == 0x00) { addrEndSearch = addrStartSearch + 0x500; } else if (*(addrStartSearch + 0x9) == 0x70) { PUCHAR pKiSystemCall64Shadow = addrStartSearch; PUCHAR EndSearchAddress = pKiSystemCall64Shadow + 0x500; PUCHAR i = NULL; INT Temp = 0; for (i = pKiSystemCall64Shadow; i < EndSearchAddress; i++) { if (MmIsAddressValid(i) && MmIsAddressValid(i + 5)) { if (*i == 0xe9 && *(i + 5) == 0xc3) { memcpy(&Temp, i + 1, 4); addrStartSearch = Temp + (i + 5); addrEndSearch = addrStartSearch + 0x500; } } } } ULONG tmpAddress = 0; int j = 0; for (PUCHAR i = addrStartSearch; i < addrEndSearch; i++, j++) { if (MmIsAddressValid(i) && MmIsAddressValid(i + 1) && MmIsAddressValid(i + 2)) { if (addrStartSearch[j] == 0x4c && addrStartSearch[j + 1] == 0x8d && addrStartSearch[j + 2] == 0x15) { RtlCopyMemory(&tmpAddress, i + 3, 4); KeServiceDescirptorTable = tmpAddress + (INT64)i + 7; } } } return KeServiceDescirptorTable; } UINT64 getSsdtFunctionAddress(UINT32 index) { INT64 address = 0; PSERVICES_DESCRIPTOR_TABLE pServiceDescriptorTable = (PSERVICES_DESCRIPTOR_TABLE)getKeServiceDescirptorTable(); PULONG ssdt = (PULONG)pServiceDescriptorTable->ServiceTableBase; ULONG dwOffset = ssdt[index]; dwOffset >>= 4; address = (UINT64)ssdt + dwOffset; return address; } VOID initinlinehook(UINT32 index) { UCHAR jmpCode[13] = "\x48\xB8\xFF\xFF\xFF\xFF\xFF\xFF\xFF\x00\xFF\xE0"; UINT64 proxyFunction; UINT64 AAA = getSsdtFunctionAddress(index); proxyFunction = (UINT64)myNtOpenProcess; RtlCopyMemory(jmpCode + 2, &proxyFunction, 8); wpOff(); memset(AAA, 0x90, 15); RtlCopyMemory(AAA, jmpCode, 12); wpOn(); return; }
VOID ssdtHook(UINT32 index) { PSERVICES_DESCRIPTOR_TABLE pKeServiceDescriptorTable = (PSERVICES_DESCRIPTOR_TABLE)getKeServiceDescirptorTable(); PULONG pSsdt = (PULONG)pKeServiceDescriptorTable->ServiceTableBase; originNtOpenProcess = (NTOPENPROCESS)getSsdtFunctionAddress(0x26); initinlinehook(index); wpOff(); pSsdt[0x26] = pSsdt[index]; wpOn(); return; } UINT64 getFunctionCount() { PSERVICES_DESCRIPTOR_TABLE pKeServiceDescriptorTable; pKeServiceDescriptorTable = (PSERVICES_DESCRIPTOR_TABLE)getKeServiceDescirptorTable(); return (UINT64)(pKeServiceDescriptorTable->ServiceCount);
} VOID ssdtUnhook(UINT32 index) { int nCount = getFunctionCount(); PSERVICES_DESCRIPTOR_TABLE p = (PSERVICES_DESCRIPTOR_TABLE)getKeServiceDescirptorTable(); PULONG ssdt = (PULONG)p->ServiceTableBase; wpOff(); for (int i = 0; i < nCount; i++) { ssdt[i] = originAddress[i]; } wpOn(); }
|