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misc.c
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/*
Cuckoo Sandbox - Automated Malware Analysis
Copyright (C) 2010-2016 Cuckoo Sandbox Developers, Optiv, Inc. ([email protected]), Brad Spengler
This program is free software: you can redistribute it and/or modify
it under the terms of the GNU General Public License as published by
the Free Software Foundation, either version 3 of the License, or
(at your option) any later version.
This program is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
GNU General Public License for more details.
You should have received a copy of the GNU General Public License
along with this program. If not, see <http://www.gnu.org/licenses/>.
*/
#include <stdio.h>
#include <ctype.h>
#include "ntapi.h"
#include <shlwapi.h>
#include <sddl.h>
#include "misc.h"
#include "hooking.h"
#include "log.h"
#include "pipe.h"
#include "config.h"
extern void DoOutputDebugString(_In_ LPCTSTR lpOutputString, ...);
static _NtQueryInformationProcess pNtQueryInformationProcess;
static _NtQueryInformationThread pNtQueryInformationThread;
static _RtlGenRandom pRtlGenRandom;
static _NtQueryAttributesFile pNtQueryAttributesFile;
static _NtQueryObject pNtQueryObject;
static _NtQueryKey pNtQueryKey;
static _NtDelayExecution pNtDelayExecution;
static _NtQuerySystemInformation pNtQuerySystemInformation;
_NtAllocateVirtualMemory pNtAllocateVirtualMemory;
_NtProtectVirtualMemory pNtProtectVirtualMemory;
_NtFreeVirtualMemory pNtFreeVirtualMemory;
_LdrRegisterDllNotification pLdrRegisterDllNotification;
void resolve_runtime_apis(void)
{
HMODULE ntdllbase = GetModuleHandle("ntdll");
*(FARPROC *)&pNtDelayExecution = GetProcAddress(ntdllbase, "NtDelayExecution");
*(FARPROC *)&pNtQuerySystemInformation = GetProcAddress(ntdllbase, "NtQuerySystemInformation");
*(FARPROC *)&pNtQueryInformationProcess = GetProcAddress(ntdllbase, "NtQueryInformationProcess");
*(FARPROC *)&pNtQueryInformationThread = GetProcAddress(ntdllbase, "NtQueryInformationThread");
*(FARPROC *)&pNtQueryObject = GetProcAddress(ntdllbase, "NtQueryObject");
*(FARPROC *)&pNtQueryKey = GetProcAddress(ntdllbase, "NtQueryKey");
*(FARPROC *)&pNtQueryAttributesFile = GetProcAddress(ntdllbase, "NtQueryAttributesFile");
*(FARPROC *)&pNtAllocateVirtualMemory = GetProcAddress(ntdllbase, "NtAllocateVirtualMemory");
*(FARPROC *)&pNtProtectVirtualMemory = GetProcAddress(ntdllbase, "NtProtectVirtualMemory");
*(FARPROC *)&pNtFreeVirtualMemory = GetProcAddress(ntdllbase, "NtFreeVirtualMemory");
*(FARPROC *)&pLdrRegisterDllNotification = GetProcAddress(ntdllbase, "LdrRegisterDllNotification");
*(FARPROC *)&pRtlGenRandom = GetProcAddress(GetModuleHandle("advapi32"), "SystemFunction036");
}
ULONG_PTR g_our_dll_base;
DWORD g_our_dll_size;
void raw_sleep(int msecs)
{
LARGE_INTEGER interval;
interval.QuadPart = -(msecs * 10000);
pNtDelayExecution(FALSE, &interval);
}
// snprintf can end up acquiring the process' heap lock which will be unsafe in the context of a hooked
// NtAllocate/FreeVirtualMemory
void num_to_string(char *buf, unsigned int buflen, unsigned int num)
{
unsigned int dec = 1000000000;
unsigned int i = 0;
if (!buflen)
return;
while (dec) {
if (!i && ((num / dec) || dec == 1))
buf[i++] = '0' + (num / dec);
else if (i)
buf[i++] = '0' + (num / dec);
if (i == buflen - 1)
break;
num = num % dec;
dec /= 10;
}
buf[i] = '\0';
}
unsigned short our_htons(unsigned short num)
{
return (num >> 8) | ((num & 0xFF) << 8);
}
unsigned int our_htonl(unsigned int num)
{
return (num >> 24) | ((num & 0x00FF0000) >> 8) | ((num & 0x0000FF00) << 8) | ((num & 0xFF) << 24);
}
void addr_to_string(const IN_ADDR addr, char *string)
{
const unsigned char *chunk = (const unsigned char *)&addr;
string[0] = '\0';
num_to_string(string, 4, chunk[0]);
strcat(string, ".");
num_to_string(string+strlen(string), 4, chunk[1]);
strcat(string, ".");
num_to_string(string+strlen(string), 4, chunk[2]);
strcat(string, ".");
num_to_string(string+strlen(string), 4, chunk[3]);
}
wchar_t *ascii_to_unicode_dup(char *str)
{
unsigned int len = (unsigned int)strlen(str);
unsigned int i;
wchar_t *rtmp = calloc(1, (len + 1) * sizeof(wchar_t));
for (i = 0; i < len; i++)
rtmp[i] = (wchar_t)(unsigned short)str[i];
return rtmp;
}
int is_stack_pivoted(void)
{
hook_info_t *hookinfo = hook_info();
ULONG_PTR bottom, top;
bottom = get_stack_bottom();
top = get_stack_top();
if (hookinfo->stack_pointer >= bottom && hookinfo->stack_pointer < top)
return 0;
return 1;
}
PCHAR memmem(PCHAR haystack, ULONG hlen, PCHAR needle, ULONG nlen)
{
if (nlen > hlen)
return NULL;
ULONG i;
for (i = 0; i < hlen - nlen + 1; i++) {
if (!memcmp(haystack + i, needle, nlen))
return haystack + i;
}
return NULL;
}
BOOL is_bytes_in_buf(PCHAR buf, ULONG len, PCHAR memstr, ULONG memlen, ULONG maxsearchbytes)
{
return memmem(buf, min(maxsearchbytes, len), memstr, memlen) ? TRUE : FALSE;
}
void replace_string_in_buf(PCHAR buf, ULONG len, PCHAR findstr, PCHAR repstr)
{
unsigned int findlen = (unsigned int)strlen(findstr);
unsigned int replen = (unsigned int)strlen(repstr);
ULONG i;
if ((findlen != replen) || len < findlen)
return;
for (i = 0; i <= len - findlen; i++) {
if (!memcmp(&buf[i], findstr, findlen)) {
memcpy(&buf[i], repstr, replen);
i += replen - 1;
}
}
}
void replace_ci_string_in_buf(PCHAR buf, ULONG len, PCHAR findstr, PCHAR repstr)
{
unsigned int findlen = (unsigned int)strlen(findstr);
unsigned int replen = (unsigned int)strlen(repstr);
ULONG i;
if ((findlen != replen) || len < findlen)
return;
for (i = 0; i <= len - findlen; i++) {
if (!_strnicmp(&buf[i], findstr, findlen)) {
memcpy(&buf[i], repstr, replen);
i += replen - 1;
}
}
}
// len is in characters
void replace_wstring_in_buf(PWCHAR buf, ULONG len, PWCHAR findstr, PWCHAR repstr)
{
unsigned int findlen = (unsigned int)wcslen(findstr);
unsigned int replen = (unsigned int)wcslen(repstr);
ULONG i;
if ((findlen != replen) || len < findlen)
return;
for (i = 0; i <= len - findlen; i++) {
if (!memcmp(&buf[i], findstr, findlen * sizeof(wchar_t))) {
memcpy(&buf[i], repstr, replen * sizeof(wchar_t));
i += replen - 1;
}
}
}
void replace_ci_wstring_in_buf(PWCHAR buf, ULONG len, PWCHAR findstr, PWCHAR repstr)
{
unsigned int findlen = (unsigned int)wcslen(findstr);
unsigned int replen = (unsigned int)wcslen(repstr);
ULONG i;
if ((findlen != replen) || len < findlen)
return;
for (i = 0; i <= len - findlen; i++) {
if (!_wcsnicmp(&buf[i], findstr, findlen)) {
memcpy(&buf[i], repstr, replen * sizeof(wchar_t));
i += replen - 1;
}
}
}
void perform_device_fakery(PVOID OutputBuffer, ULONG OutputBufferLength, ULONG IoControlCode)
{
/* Fake harddrive size to 256GB */
if (OutputBufferLength >= sizeof(GET_LENGTH_INFORMATION) && IoControlCode == IOCTL_DISK_GET_LENGTH_INFO) {
((PGET_LENGTH_INFORMATION)OutputBuffer)->Length.QuadPart = 256060514304L;
}
if (OutputBufferLength >= sizeof(DISK_GEOMETRY) && IoControlCode == IOCTL_DISK_GET_DRIVE_GEOMETRY) {
PDISK_GEOMETRY geo = (PDISK_GEOMETRY)OutputBuffer;
geo->Cylinders.QuadPart = 31130;
geo->TracksPerCylinder = 255;
geo->BytesPerSector = 512;
geo->SectorsPerTrack = 63;
}
if (OutputBufferLength >= sizeof(DISK_GEOMETRY) && IoControlCode == IOCTL_DISK_GET_DRIVE_GEOMETRY_EX) {
PDISK_GEOMETRY_EX geo = (PDISK_GEOMETRY_EX)OutputBuffer;
geo->Geometry.Cylinders.QuadPart = 31130;
geo->Geometry.TracksPerCylinder = 255;
geo->Geometry.BytesPerSector = 512;
geo->Geometry.SectorsPerTrack = 63;
if (OutputBufferLength >= (sizeof(DISK_GEOMETRY) + sizeof(LARGE_INTEGER)))
geo->DiskSize.QuadPart = 256060514304L;
}
/* fake model name */
if (IoControlCode == IOCTL_STORAGE_QUERY_PROPERTY) {
replace_string_in_buf(OutputBuffer, OutputBufferLength, "QEMU", "DELL");
replace_string_in_buf(OutputBuffer, OutputBufferLength, "VBOX", "DELL");
replace_string_in_buf(OutputBuffer, OutputBufferLength, "VMware", "DELL__");
replace_string_in_buf(OutputBuffer, OutputBufferLength, "Virtual", "C300_BD");
}
/* WMI fakery */
if (IoControlCode == 0x00224000) {
replace_string_in_buf(OutputBuffer, OutputBufferLength, "Xen", "VIA");
replace_string_in_buf(OutputBuffer, OutputBufferLength, "QEMU", "DELL");
replace_string_in_buf(OutputBuffer, OutputBufferLength, "VBOX", "DELL");
replace_string_in_buf(OutputBuffer, OutputBufferLength, "vbox", "dell");
replace_string_in_buf(OutputBuffer, OutputBufferLength, "VMware", "DELL ");
replace_string_in_buf(OutputBuffer, OutputBufferLength, "Red Hat", "Lenovo ");
replace_string_in_buf(OutputBuffer, OutputBufferLength, "Virtual", "Compute");
replace_string_in_buf(OutputBuffer, OutputBufferLength, "innotek GmbH", "ASUS Systems");
replace_string_in_buf(OutputBuffer, OutputBufferLength, "MS_VM_CERT/SHA1", "Dell System ");
}
}
void perform_create_time_fakery(FILETIME *createtime)
{
createtime->dwHighDateTime = 0x1CA0431;
if (createtime->dwLowDateTime == 0xFDB0C77C)
createtime->dwLowDateTime++;
}
void perform_ascii_registry_fakery(PWCHAR keypath, LPVOID Data, ULONG DataLength)
{
if (keypath == NULL || Data == NULL)
return;
if (!wcsicmp(keypath, L"HKEY_LOCAL_MACHINE\\HARDWARE\\DEVICEMAP\\Scsi\\Scsi Port 0\\Scsi Bus 0\\Target Id 0\\Logical Unit Id 0\\Identifier")) {
replace_string_in_buf(Data, DataLength, "QEMU", "DELL");
replace_string_in_buf(Data, DataLength, "VMware", "DELL__");
replace_string_in_buf(Data, DataLength, "Virtual", "C300_BD");
replace_string_in_buf(Data, DataLength, "VBOX", "DELL");
}
if (!wcsicmp(keypath, L"HKEY_LOCAL_MACHINE\\HARDWARE\\DEVICEMAP\\Scsi\\Scsi Port 1\\Scsi Bus 0\\Target Id 0\\Logical Unit Id 0\\Identifier")) {
replace_string_in_buf(Data, DataLength, "QEMU", "DELL");
replace_string_in_buf(Data, DataLength, "VMware", "DELL__");
replace_string_in_buf(Data, DataLength, "Virtual", "C300_BD");
replace_string_in_buf(Data, DataLength, "VBOX", "DELL");
}
if (!wcsicmp(keypath, L"HKEY_LOCAL_MACHINE\\HARDWARE\\DEVICEMAP\\Scsi\\Scsi Port 2\\Scsi Bus 0\\Target Id 0\\Logical Unit Id 0\\Identifier")) {
replace_string_in_buf(Data, DataLength, "QEMU", "DELL");
replace_string_in_buf(Data, DataLength, "VMware", "DELL__");
replace_string_in_buf(Data, DataLength, "Virtual", "C300_BD");
replace_string_in_buf(Data, DataLength, "VBOX", "DELL");
}
if (!wcsicmp(keypath, L"HKEY_LOCAL_MACHINE\\HARDWARE\\Description\\System\\SystemBiosVersion")) {
replace_string_in_buf(Data, DataLength, "VBOX", "DELL");
replace_string_in_buf(Data, DataLength, "BOCHS", "Award");
}
if (!wcsicmp(keypath, L"HKEY_LOCAL_MACHINE\\HARDWARE\\Description\\System\\VideoBiosVersion")) {
replace_string_in_buf(Data, DataLength, "Oracle VM VirtualBox", "Intel VideoBios v1.3");
}
if (!wcsicmp(keypath, L"HKEY_LOCAL_MACHINE\\HARDWARE\\Description\\System\\SystemBiosDate")) {
replace_string_in_buf(Data, DataLength, "06/23/99", "01/01/02");
}
if (!wcsicmp(keypath, L"HKEY_LOCAL_MACHINE\\SYSTEM\\CurrentControlSet\\Services\\mssmbios\\Data\\AcpiData") ||
!wcsicmp(keypath, L"HKEY_LOCAL_MACHINE\\SYSTEM\\ControlSet001\\Services\\mssmbios\\Data\\AcpiData")) {
replace_string_in_buf(Data, DataLength, "VBOX", "DELL");
}
if (!wcsicmp(keypath, L"HKEY_LOCAL_MACHINE\\SYSTEM\\CurrentControlSet\\Services\\mssmbios\\Data\\SMBiosData") ||
!wcsicmp(keypath, L"HKEY_LOCAL_MACHINE\\SYSTEM\\ControlSet001\\Services\\mssmbios\\Data\\SMBiosData")) {
replace_string_in_buf(Data, DataLength, "vbox", "DELL");
replace_string_in_buf(Data, DataLength, "VirtualBox", "Gigabyte__");
replace_string_in_buf(Data, DataLength, "innotek GmbH", "HP Pavillion");
}
if (!wcsicmp(keypath, L"HKEY_LOCAL_MACHINE\\HARDWARE\\ACPI\\DSDT\\VBOX__\\VBOXBIOS\\00000002\\00000000") ||
!wcsicmp(keypath, L"HKEY_LOCAL_MACHINE\\HARDWARE\\ACPI\\FADT\\VBOX__\\VBOXFACP\\00000001\\00000000") ||
!wcsicmp(keypath, L"HKEY_LOCAL_MACHINE\\HARDWARE\\ACPI\\RSDT\\VBOX__\\VBOXRSDT\\00000001\\00000000")) {
replace_string_in_buf(Data, DataLength, "VBOX", "DELL");
}
if (!wcsicmp(keypath, L"HKEY_LOCAL_MACHINE\\SYSTEM\\ControlSet001\\Services\\Disk\\Enum\\0")) {
replace_string_in_buf(Data, DataLength, "QEMU", "DELL");
replace_string_in_buf(Data, DataLength, "VMware", "DELL__");
replace_string_in_buf(Data, DataLength, "Virtual", "C300_BD");
replace_string_in_buf(Data, DataLength, "VBOX", "DELL");
}
if (!wcsnicmp(keypath, L"HKEY_LOCAL_MACHINE\\HARDWARE\\DESCRIPTION\\System\\CentralProcessor", 63) &&
!wcsicmp(keypath + wcslen(keypath) - wcslen(L"ProcessorNameString"), L"ProcessorNameString")) {
replace_string_in_buf(Data, DataLength, "QEMU Virtual CPU version 2.0.0", "Intel(R) Core(TM) i7 CPU @3GHz");
replace_string_in_buf(Data, DataLength, "Xeon(R) ", "Core(TM)");
}
if (!wcsicmp(keypath, L"HKEY_LOCAL_MACHINE\\HARDWARE\\DESCRIPTION\\System\\BIOS\\SystemManufacturer") ||
!wcsicmp(keypath, L"HKEY_LOCAL_MACHINE\\HARDWARE\\DESCRIPTION\\System\\BIOS\\SystemProductName")) {
replace_string_in_buf(Data, DataLength, "VMware", "Lenovo");
replace_string_in_buf(Data, DataLength, "Virtual Platform", "X230 ThinkPad PC");
}
// fake the manufacturer name
if (!wcsicmp(keypath, L"HKEY_LOCAL_MACHINE\\SYSTEM\\ControlSet001\\Control\\SystemInformation\\SystemManufacturer"))
replace_string_in_buf(Data, DataLength, "QEMU", "DELL");
}
void perform_unicode_registry_fakery(PWCHAR keypath, LPVOID Data, ULONG DataLength)
{
if (keypath == NULL || Data == NULL)
return;
if (!wcsicmp(keypath, L"HKEY_LOCAL_MACHINE\\HARDWARE\\DEVICEMAP\\Scsi\\Scsi Port 0\\Scsi Bus 0\\Target Id 0\\Logical Unit Id 0\\Identifier")) {
replace_wstring_in_buf(Data, DataLength / sizeof(wchar_t), L"QEMU", L"DELL");
replace_wstring_in_buf(Data, DataLength / sizeof(wchar_t), L"VMware", L"DELL__");
replace_wstring_in_buf(Data, DataLength / sizeof(wchar_t), L"Virtual", L"C300_BD");
replace_wstring_in_buf(Data, DataLength / sizeof(wchar_t), L"VBOX", L"DELL");
}
if (!wcsicmp(keypath, L"HKEY_LOCAL_MACHINE\\HARDWARE\\Description\\System\\SystemBiosVersion")) {
replace_wstring_in_buf(Data, DataLength / sizeof(wchar_t), L"VBOX", L"DELL");
replace_wstring_in_buf(Data, DataLength / sizeof(wchar_t), L"BOCHS", L"Award");
}
if (!wcsicmp(keypath, L"HKEY_LOCAL_MACHINE\\HARDWARE\\Description\\System\\SystemBiosDate")) {
replace_wstring_in_buf(Data, DataLength / sizeof(wchar_t), L"06/23/99", L"01/01/02");
}
if (!wcsicmp(keypath, L"HKEY_LOCAL_MACHINE\\HARDWARE\\Description\\System\\VideoBiosVersion")) {
replace_wstring_in_buf(Data, DataLength / sizeof(wchar_t), L"Oracle VM VirtualBox", L"Intel VideoBios v1.3");
}
if (!wcsicmp(keypath, L"HKEY_LOCAL_MACHINE\\SYSTEM\\CurrentControlSet\\Services\\mssmbios\\Data\\AcpiData") ||
!wcsicmp(keypath, L"HKEY_LOCAL_MACHINE\\SYSTEM\\ControlSet001\\Services\\mssmbios\\Data\\AcpiData")) {
replace_wstring_in_buf(Data, DataLength / sizeof(wchar_t), L"VBOX", L"DELL");
}
if (!wcsicmp(keypath, L"HKEY_LOCAL_MACHINE\\SYSTEM\\CurrentControlSet\\Services\\mssmbios\\Data\\SMBiosData") ||
!wcsicmp(keypath, L"HKEY_LOCAL_MACHINE\\SYSTEM\\ControlSet001\\Services\\mssmbios\\Data\\SMBiosData")) {
replace_wstring_in_buf(Data, DataLength / sizeof(wchar_t), L"vbox", L"DELL");
replace_wstring_in_buf(Data, DataLength / sizeof(wchar_t), L"VirtualBox", L"Gigabyte__");
replace_wstring_in_buf(Data, DataLength / sizeof(wchar_t), L"innotek GmbH", L"HP Pavillion");
}
if (!wcsicmp(keypath, L"HKEY_LOCAL_MACHINE\\HARDWARE\\ACPI\\DSDT\\VBOX__\\VBOXBIOS\\00000002\\00000000") ||
!wcsicmp(keypath, L"HKEY_LOCAL_MACHINE\\HARDWARE\\ACPI\\FADT\\VBOX__\\VBOXFACP\\00000001\\00000000") ||
!wcsicmp(keypath, L"HKEY_LOCAL_MACHINE\\HARDWARE\\ACPI\\RSDT\\VBOX__\\VBOXRSDT\\00000001\\00000000")) {
replace_wstring_in_buf(Data, DataLength / sizeof(wchar_t), L"VBOX", L"DELL");
}
if (!wcsicmp(keypath, L"HKEY_LOCAL_MACHINE\\SYSTEM\\ControlSet001\\Services\\Disk\\Enum\\0")) {
replace_wstring_in_buf(Data, DataLength / sizeof(wchar_t), L"QEMU", L"DELL");
replace_wstring_in_buf(Data, DataLength / sizeof(wchar_t), L"VMware", L"DELL__");
replace_wstring_in_buf(Data, DataLength / sizeof(wchar_t), L"Virtual", L"C300_BD");
replace_wstring_in_buf(Data, DataLength / sizeof(wchar_t), L"VBOX", L"DELL");
}
if (!wcsnicmp(keypath, L"HKEY_LOCAL_MACHINE\\HARDWARE\\DESCRIPTION\\System\\CentralProcessor", 63) &&
!wcsicmp(keypath + wcslen(keypath) - wcslen(L"ProcessorNameString"), L"ProcessorNameString")) {
replace_wstring_in_buf(Data, DataLength / sizeof(wchar_t), L"QEMU Virtual CPU version 2.0.0", L"Intel(R) Core(TM) i7 CPU @3GHz");
replace_wstring_in_buf(Data, DataLength / sizeof(wchar_t), L"Xeon(R) ", L"Core(TM)");
}
if (!wcsicmp(keypath, L"HKEY_LOCAL_MACHINE\\HARDWARE\\DESCRIPTION\\System\\BIOS\\SystemManufacturer") ||
!wcsicmp(keypath, L"HKEY_LOCAL_MACHINE\\HARDWARE\\DESCRIPTION\\System\\BIOS\\SystemProductName")) {
replace_wstring_in_buf(Data, DataLength / sizeof(wchar_t), L"VMware", L"Lenovo");
replace_wstring_in_buf(Data, DataLength / sizeof(wchar_t), L"Virtual Platform", L"X230 ThinkPad PC");
}
// fake the manufacturer name
if (!wcsicmp(keypath, L"HKEY_LOCAL_MACHINE\\SYSTEM\\ControlSet001\\Control\\SystemInformation\\SystemManufacturer"))
replace_wstring_in_buf(Data, DataLength / sizeof(wchar_t), L"QEMU", L"DELL");
}
DWORD get_image_size(ULONG_PTR base)
{
PIMAGE_DOS_HEADER doshdr = (PIMAGE_DOS_HEADER)base;
PIMAGE_NT_HEADERS nthdr = (PIMAGE_NT_HEADERS)(base + doshdr->e_lfanew);
return nthdr->OptionalHeader.SizeOfImage;
}
BOOLEAN is_valid_address_range(ULONG_PTR start, DWORD len)
{
MEMORY_BASIC_INFORMATION meminfo;
if (!VirtualQuery((LPCVOID)start, &meminfo, sizeof(meminfo)))
return FALSE;
if (start < (ULONG_PTR)meminfo.BaseAddress || (start + len) > ((ULONG_PTR)meminfo.BaseAddress + meminfo.RegionSize))
return FALSE;
if (!(meminfo.State & MEM_COMMIT))
return FALSE;
if (meminfo.Protect & (PAGE_NOACCESS | PAGE_GUARD))
return FALSE;
return TRUE;
}
DWORD parent_process_id() // By Napalm @ NetCore2K (rohitab.com)
{
PROCESS_BASIC_INFORMATION pbi;
ULONG ulSize = 0;
if(pNtQueryInformationProcess(GetCurrentProcess(), 0, &pbi, sizeof(pbi), &ulSize) >= 0 && ulSize == sizeof(pbi))
return (DWORD)pbi.ParentProcessId;
return 0;
}
DWORD pid_from_process_handle(HANDLE process_handle)
{
PROCESS_BASIC_INFORMATION pbi;
ULONG ulSize;
HANDLE dup_handle = process_handle;
DWORD PID = 0;
BOOL duped;
lasterror_t lasterror;
get_lasterrors(&lasterror);
if (process_handle == GetCurrentProcess()) {
PID = GetCurrentProcessId();
goto out;
}
memset(&pbi, 0, sizeof(pbi));
duped = DuplicateHandle(GetCurrentProcess(), process_handle, GetCurrentProcess(), &dup_handle, PROCESS_QUERY_INFORMATION, FALSE, 0);
if(pNtQueryInformationProcess(dup_handle, 0, &pbi, sizeof(pbi), &ulSize) >= 0 && ulSize == sizeof(pbi))
PID = (DWORD)pbi.UniqueProcessId;
if (duped)
CloseHandle(dup_handle);
out:
set_lasterrors(&lasterror);
return PID;
}
static BOOL cid_from_thread_handle(HANDLE thread_handle, PCLIENT_ID cid)
{
THREAD_BASIC_INFORMATION tbi;
ULONG ulSize;
HANDLE dup_handle = thread_handle;
BOOL duped;
BOOL ret = FALSE;
lasterror_t lasterror;
get_lasterrors(&lasterror);
memset(&tbi, 0, sizeof(tbi));
duped = DuplicateHandle(GetCurrentProcess(), thread_handle, GetCurrentProcess(), &dup_handle, THREAD_QUERY_INFORMATION, FALSE, 0);
if(pNtQueryInformationThread(dup_handle, 0, &tbi, sizeof(tbi), &ulSize) >= 0 && ulSize == sizeof(tbi)) {
memcpy(cid, &tbi.ClientId, sizeof(CLIENT_ID));
ret = TRUE;
}
if (duped)
CloseHandle(dup_handle);
set_lasterrors(&lasterror);
return ret;
}
DWORD pid_from_thread_handle(HANDLE thread_handle)
{
CLIENT_ID cid;
BOOL ret;
memset(&cid, 0, sizeof(cid));
ret = cid_from_thread_handle(thread_handle, &cid);
return (DWORD)(ULONG_PTR)cid.UniqueProcess;
}
DWORD tid_from_thread_handle(HANDLE thread_handle)
{
CLIENT_ID cid;
BOOL ret;
memset(&cid, 0, sizeof(cid));
ret = cid_from_thread_handle(thread_handle, &cid);
return (DWORD)(ULONG_PTR)cid.UniqueThread;
}
DWORD our_getprocessid(HANDLE Process)
{
DWORD ret;
lasterror_t lasterror;
get_lasterrors(&lasterror);
if (Process == NtCurrentProcess())
ret = GetCurrentProcessId();
else
ret = GetProcessId(Process);
set_lasterrors(&lasterror);
return ret;
}
DWORD random()
{
DWORD ret, realret;
lasterror_t lasterror;
get_lasterrors(&lasterror);
realret = pRtlGenRandom(&ret, sizeof(ret)) ? ret : rand();
set_lasterrors(&lasterror);
return realret;
}
DWORD randint(DWORD min, DWORD max)
{
return min + (random() % (max - min + 1));
}
BOOL is_directory_objattr(const OBJECT_ATTRIBUTES *obj)
{
FILE_BASIC_INFORMATION basic_information;
if(NT_SUCCESS(pNtQueryAttributesFile(obj, &basic_information))) {
return basic_information.FileAttributes & FILE_ATTRIBUTE_DIRECTORY;
}
return FALSE;
}
BOOL file_exists(const OBJECT_ATTRIBUTES *obj)
{
FILE_BASIC_INFORMATION basic_information;
NTSTATUS ret = pNtQueryAttributesFile(obj, &basic_information);
if (NT_SUCCESS(ret) || ret == STATUS_INVALID_DEVICE_REQUEST)
return TRUE;
return FALSE;
}
DWORD loaded_dlls;
struct dll_range dll_ranges[MAX_DLLS];
static void add_dll_range(ULONG_PTR start, ULONG_PTR end)
{
DWORD tmp_loaded_dlls = loaded_dlls;
if (tmp_loaded_dlls >= MAX_DLLS)
return;
if (is_in_dll_range(start))
return;
dll_ranges[tmp_loaded_dlls].start = start;
dll_ranges[tmp_loaded_dlls].end = end;
loaded_dlls++;
}
BOOL is_in_dll_range(ULONG_PTR addr)
{
DWORD i;
for (i = 0; i < loaded_dlls; i++)
if (addr >= dll_ranges[i].start && addr < dll_ranges[i].end)
return TRUE;
return FALSE;
}
ULONG_PTR base_of_dll_of_interest;
void set_dll_of_interest(ULONG_PTR BaseAddress)
{
base_of_dll_of_interest = BaseAddress;
}
void add_all_dlls_to_dll_ranges(void)
{
LDR_MODULE *mod; PEB *peb = (PEB *)get_peb();
/* skip the base image */
mod = (LDR_MODULE *)peb->LoaderData->InLoadOrderModuleList.Flink;
if (mod->BaseAddress == NULL)
return;
for (mod = (LDR_MODULE *)mod->InLoadOrderModuleList.Flink;
mod->BaseAddress != NULL;
mod = (LDR_MODULE *)mod->InLoadOrderModuleList.Flink) {
//if ((ULONG_PTR)mod->BaseAddress != base_of_dll_of_interest)
add_dll_range((ULONG_PTR)mod->BaseAddress, (ULONG_PTR)mod->BaseAddress + mod->SizeOfImage);
}
}
char *convert_address_to_dll_name_and_offset(ULONG_PTR addr, unsigned int *offset)
{
LDR_MODULE *mod; PEB *peb = (PEB *)get_peb();
if (addr >= g_our_dll_base && addr < (g_our_dll_base + g_our_dll_size))
{
char *buf = calloc(1, strlen("cuckoomon.dll") + 1);
if (buf == NULL)
return NULL;
strcpy(buf, "cuckoomon.dll");
*offset = (unsigned int)(addr - g_our_dll_base);
return buf;
}
for (mod = (LDR_MODULE *)peb->LoaderData->InLoadOrderModuleList.Flink;
mod->BaseAddress != NULL;
mod = (LDR_MODULE *)mod->InLoadOrderModuleList.Flink) {
char *buf;
unsigned int i;
if (addr < (ULONG_PTR)mod->BaseAddress || addr >= ((ULONG_PTR)mod->BaseAddress + mod->SizeOfImage))
continue;
buf = calloc(1, (mod->BaseDllName.Length / sizeof(wchar_t)) + 1);
if (buf == NULL)
return NULL;
for (i = 0; i < (mod->BaseDllName.Length / sizeof(wchar_t)); i++)
buf[i] = (char)mod->BaseDllName.Buffer[i];
*offset = (unsigned int)(addr - (ULONG_PTR)mod->BaseAddress);
return buf;
}
return NULL;
}
// hide our module from PEB
// http://www.openrce.org/blog/view/844/How_to_hide_dll
#define CUT_LIST(item) \
item.Blink->Flink = item.Flink; \
item.Flink->Blink = item.Blink
void hide_module_from_peb(HMODULE module_handle)
{
LDR_MODULE *mod; PEB *peb = (PEB *)get_peb();
for (mod = (LDR_MODULE *) peb->LoaderData->InLoadOrderModuleList.Flink;
mod->BaseAddress != NULL;
mod = (LDR_MODULE *) mod->InLoadOrderModuleList.Flink) {
if(mod->BaseAddress == module_handle) {
CUT_LIST(mod->InLoadOrderModuleList);
CUT_LIST(mod->InInitializationOrderModuleList);
CUT_LIST(mod->InMemoryOrderModuleList);
// TODO test whether this list is really used as a linked list
// like InLoadOrderModuleList etc
CUT_LIST(mod->HashTableEntry);
memset(mod, 0, sizeof(LDR_MODULE));
break;
}
}
}
PUNICODE_STRING get_basename_of_module(HMODULE module_handle)
{
LDR_MODULE *mod; PEB *peb = (PEB *)get_peb();
for (mod = (LDR_MODULE *)peb->LoaderData->InLoadOrderModuleList.Flink;
mod->BaseAddress != NULL;
mod = (LDR_MODULE *)mod->InLoadOrderModuleList.Flink) {
if (mod->BaseAddress == module_handle)
return &mod->BaseDllName;
}
return NULL;
}
uint32_t path_from_handle(HANDLE handle,
wchar_t *path, uint32_t path_buffer_len)
{
POBJECT_NAME_INFORMATION resolvedName;
ULONG returnLength;
NTSTATUS status;
uint32_t length = 0;
lasterror_t lasterror;
get_lasterrors(&lasterror);
resolvedName = (POBJECT_NAME_INFORMATION)calloc(1, OBJECT_NAME_INFORMATION_REQUIRED_SIZE);
status = pNtQueryObject(handle, ObjectNameInformation,
resolvedName, OBJECT_NAME_INFORMATION_REQUIRED_SIZE, &returnLength);
if (NT_SUCCESS(status)) {
length = min(resolvedName->Name.Length / sizeof(wchar_t), path_buffer_len - 1);
// NtQueryInformationFile omits the "C:" part in a
// filename, apparently
memcpy(path, resolvedName->NameBuffer, length * sizeof(wchar_t));
}
if (path_buffer_len)
path[length] = L'\0';
free(resolvedName);
set_lasterrors(&lasterror);
return length;
}
uint32_t path_from_object_attributes(const OBJECT_ATTRIBUTES *obj,
wchar_t *path, uint32_t buffer_length)
{
uint32_t copylen, obj_length, length;
if (obj->ObjectName == NULL || obj->ObjectName->Buffer == NULL) {
return path_from_handle(obj->RootDirectory, path, buffer_length);;
}
// ObjectName->Length is actually the size in bytes.
obj_length = obj->ObjectName->Length / sizeof(wchar_t);
copylen = min(obj_length, buffer_length - 1);
if(obj->RootDirectory == NULL) {
memcpy(path, obj->ObjectName->Buffer, copylen * sizeof(wchar_t));
path[copylen] = L'\0';
return copylen;
}
length = path_from_handle(obj->RootDirectory, path, buffer_length);
path[length++] = L'\\';
if (length >= (buffer_length - 1))
copylen = 0;
else
copylen = buffer_length - 1 - length;
copylen = min(copylen, obj_length);
memcpy(&path[length], obj->ObjectName->Buffer, copylen * sizeof(wchar_t));
path[length + copylen] = L'\0';
return length + copylen;
}
static char *system32dir_a;
static char *sysnativedir_a;
static wchar_t *system32dir_w;
static wchar_t *sysnativedir_w;
static unsigned int system32dir_len;
static unsigned int sysnativedir_len;
char *ensure_absolute_ascii_path(char *out, const char *in)
{
char tmpout[MAX_PATH];
char nonexistent[MAX_PATH];
char *pathcomponent;
unsigned int nonexistentidx;
unsigned int pathcomponentlen;
unsigned int lenchars;
lasterror_t lasterror;
get_lasterrors(&lasterror);
if (!GetFullPathNameA(in, MAX_PATH, tmpout, NULL))
goto normal_copy;
lenchars = 0;
nonexistentidx = MAX_PATH - 1;
nonexistent[nonexistentidx] = '\0';
while (lenchars == 0) {
lenchars = GetLongPathNameA(tmpout, out, MAX_PATH);
if (lenchars)
break;
if (GetLastError() != ERROR_FILE_NOT_FOUND && GetLastError() != ERROR_PATH_NOT_FOUND && GetLastError() != ERROR_INVALID_NAME)
goto normal_copy;
pathcomponent = strrchr(tmpout, '\\');
if (pathcomponent == NULL)
goto normal_copy;
pathcomponentlen = (unsigned int)strlen(pathcomponent);
nonexistentidx -= pathcomponentlen;
memcpy(nonexistent + nonexistentidx, pathcomponent, pathcomponentlen * sizeof(char));
*pathcomponent = '\0';
}
strncat(out, nonexistent + nonexistentidx, MAX_PATH - strlen(out));
goto out;
normal_copy:
__try {
strncpy(out, in, MAX_PATH);
}
__except (EXCEPTION_EXECUTE_HANDLER) {
out[0] = '\0';
}
out:
if (is_wow64_fs_redirection_disabled() && !strnicmp(out, system32dir_a, system32dir_len)) {
memmove(out + system32dir_len + 1, out + system32dir_len, strlen(out + system32dir_len) + 1);
memcpy(out, sysnativedir_a, sysnativedir_len);
}
out[MAX_PATH - 1] = '\0';
if (out[1] == ':' && out[2] == '\\')
out[0] = toupper(out[0]);
set_lasterrors(&lasterror);
return out;
}
wchar_t *ensure_absolute_unicode_path(wchar_t *out, const wchar_t *in)
{
wchar_t *tmpout = NULL;
wchar_t *nonexistent = NULL;
unsigned int lenchars;
unsigned int nonexistentidx;
wchar_t *pathcomponent = NULL;
unsigned int pathcomponentlen;
const wchar_t *inadj = NULL;
unsigned int inlen;
int is_globalroot = 0;
lasterror_t lasterror;
get_lasterrors(&lasterror);
__try {
if (!wcsncmp(in, L"\\??\\", 4)) {
inadj = in + 4;
is_globalroot = 1;
}
else if (!wcsnicmp(in, L"\\\\?\\globalroot", 14)) {
inadj = in + 14;
is_globalroot = 1;
}
else
inadj = in;
inlen = lstrlenW(inadj);
}
__except (EXCEPTION_EXECUTE_HANDLER) {
out[0] = L'\0';
goto out;
}
tmpout = malloc(32768 * sizeof(wchar_t));
nonexistent = malloc(32768 * sizeof(wchar_t));
if (tmpout == NULL || nonexistent == NULL)
goto normal_copy;
if (!wcsnicmp(inadj, L"\\device\\", 8) || !wcsnicmp(inadj, L"\\systemroot", 11)) {
// handle \\Device\\* and \\systemroot\\*
unsigned int matchlen;
wchar_t *tmpout2;
wchar_t *retstr = get_matching_unicode_specialname(inadj, &matchlen);
if (retstr == NULL)
goto normal_copy;
// rewrite \\Device\\HarddiskVolumeX etc to the appropriate drive letter
tmpout2 = malloc(32768 * sizeof(wchar_t));
if (tmpout2 == NULL)
goto normal_copy;
wcscpy(tmpout2, L"\\\\?\\");
wcscat(tmpout2, retstr);
wcsncat(tmpout2, inadj + matchlen, 32768 - 4 - 3);
if (!GetFullPathNameW(tmpout2, 32768, tmpout, NULL)) {
free(tmpout2);
goto normal_copy;
}
free(tmpout2);
}
else if (inlen > 1 && inadj[1] == L':') {
wchar_t *tmpout2;
tmpout2 = malloc(32768 * sizeof(wchar_t));
if (tmpout2 == NULL)
goto normal_copy;
wcscpy(tmpout2, L"\\\\?\\");
wcsncat(tmpout2, inadj, 32768 - 4);
if (!GetFullPathNameW(tmpout2, 32768, tmpout, NULL)) {
free(tmpout2);
goto normal_copy;
}
free(tmpout2);
}
else if (is_globalroot) {
// handle \\??\\*\\*
goto globalroot_copy;
}
else {
if (!GetFullPathNameW(inadj, 32768, tmpout, NULL))
goto normal_copy;
}
lenchars = 0;
nonexistentidx = 32767;
nonexistent[nonexistentidx] = L'\0';
while (lenchars == 0) {
lenchars = GetLongPathNameW(tmpout, out, 32768);
if (lenchars)
break;
if (GetLastError() != ERROR_FILE_NOT_FOUND && GetLastError() != ERROR_PATH_NOT_FOUND && GetLastError() != ERROR_INVALID_NAME)
goto normal_copy;
pathcomponent = wcsrchr(tmpout, L'\\');
if (pathcomponent == NULL)
goto normal_copy;
pathcomponentlen = lstrlenW(pathcomponent);
nonexistentidx -= pathcomponentlen;
memcpy(nonexistent + nonexistentidx, pathcomponent, pathcomponentlen * sizeof(wchar_t));
*pathcomponent = L'\0';
}
wcsncat(out, nonexistent + nonexistentidx, 32768 - lstrlenW(out));
if (!wcsncmp(out, L"\\\\?\\", 4))
memmove(out, out + 4, (lstrlenW(out) + 1 - 4) * sizeof(wchar_t));
if (is_wow64_fs_redirection_disabled() && !wcsnicmp(out, system32dir_w, system32dir_len)) {
memmove(out + system32dir_len + 1, out + system32dir_len, (lstrlenW(out + system32dir_len) + 1) * sizeof(wchar_t));
memcpy(out, sysnativedir_w, sysnativedir_len * sizeof(wchar_t));
}
goto out;
globalroot_copy:
wcscpy(out, L"\\??\\");
wcsncat(out, inadj, 32768 - 4);
goto out;
normal_copy:
wcsncpy(out, inadj, 32768);
if (!wcsncmp(out, L"\\\\?\\", 4))
memmove(out, out + 4, (lstrlenW(out) + 1 - 4) * sizeof(wchar_t));
out:
out[32767] = L'\0';
if (tmpout)
free(tmpout);
if (nonexistent)
free(nonexistent);
if (out[1] == L':' && out[2] == L'\\')
out[0] = toupper(out[0]);
set_lasterrors(&lasterror);
return out;
}
static unsigned int get_encoded_unicode_string_len(const wchar_t *buf, USHORT len)
{
unsigned int numnulls = 0;