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-rw-r--r--NorthstarDLL/memory.cpp348
1 files changed, 0 insertions, 348 deletions
diff --git a/NorthstarDLL/memory.cpp b/NorthstarDLL/memory.cpp
deleted file mode 100644
index 2e994fb2..00000000
--- a/NorthstarDLL/memory.cpp
+++ /dev/null
@@ -1,348 +0,0 @@
-#include "pch.h"
-#include "memory.h"
-
-MemoryAddress::MemoryAddress() : m_nAddress(0) {}
-MemoryAddress::MemoryAddress(const uintptr_t nAddress) : m_nAddress(nAddress) {}
-MemoryAddress::MemoryAddress(const void* pAddress) : m_nAddress(reinterpret_cast<uintptr_t>(pAddress)) {}
-
-// operators
-MemoryAddress::operator uintptr_t() const
-{
- return m_nAddress;
-}
-
-MemoryAddress::operator void*() const
-{
- return reinterpret_cast<void*>(m_nAddress);
-}
-
-MemoryAddress::operator bool() const
-{
- return m_nAddress != 0;
-}
-
-bool MemoryAddress::operator==(const MemoryAddress& other) const
-{
- return m_nAddress == other.m_nAddress;
-}
-
-bool MemoryAddress::operator!=(const MemoryAddress& other) const
-{
- return m_nAddress != other.m_nAddress;
-}
-
-bool MemoryAddress::operator==(const uintptr_t& addr) const
-{
- return m_nAddress == addr;
-}
-
-bool MemoryAddress::operator!=(const uintptr_t& addr) const
-{
- return m_nAddress != addr;
-}
-
-MemoryAddress MemoryAddress::operator+(const MemoryAddress& other) const
-{
- return Offset(other.m_nAddress);
-}
-
-MemoryAddress MemoryAddress::operator-(const MemoryAddress& other) const
-{
- return MemoryAddress(m_nAddress - other.m_nAddress);
-}
-
-MemoryAddress MemoryAddress::operator+(const uintptr_t& addr) const
-{
- return Offset(addr);
-}
-
-MemoryAddress MemoryAddress::operator-(const uintptr_t& addr) const
-{
- return MemoryAddress(m_nAddress - addr);
-}
-
-MemoryAddress MemoryAddress::operator*() const
-{
- return Deref();
-}
-
-// traversal
-MemoryAddress MemoryAddress::Offset(const uintptr_t nOffset) const
-{
- return MemoryAddress(m_nAddress + nOffset);
-}
-
-MemoryAddress MemoryAddress::Deref(const int nNumDerefs) const
-{
- uintptr_t ret = m_nAddress;
- for (int i = 0; i < nNumDerefs; i++)
- ret = *reinterpret_cast<uintptr_t*>(ret);
-
- return MemoryAddress(ret);
-}
-
-// patching
-void MemoryAddress::Patch(const uint8_t* pBytes, const size_t nSize)
-{
- if (nSize)
- WriteProcessMemory(GetCurrentProcess(), reinterpret_cast<LPVOID>(m_nAddress), pBytes, nSize, NULL);
-}
-
-void MemoryAddress::Patch(const std::initializer_list<uint8_t> bytes)
-{
- uint8_t* pBytes = new uint8_t[bytes.size()];
-
- int i = 0;
- for (const uint8_t& byte : bytes)
- pBytes[i++] = byte;
-
- Patch(pBytes, bytes.size());
- delete[] pBytes;
-}
-
-inline std::vector<uint8_t> HexBytesToString(const char* pHexString)
-{
- std::vector<uint8_t> ret;
-
- int size = strlen(pHexString);
- for (int i = 0; i < size; i++)
- {
- // If this is a space character, ignore it
- if (isspace(pHexString[i]))
- continue;
-
- if (i < size - 1)
- {
- BYTE result = 0;
- for (int j = 0; j < 2; j++)
- {
- int val = 0;
- char c = *(pHexString + i + j);
- if (c >= 'a')
- {
- val = c - 'a' + 0xA;
- }
- else if (c >= 'A')
- {
- val = c - 'A' + 0xA;
- }
- else if (isdigit(c))
- {
- val = c - '0';
- }
- else
- {
- assert(false, "Failed to parse invalid hex string.");
- val = -1;
- }
-
- result += (j == 0) ? val * 16 : val;
- }
- ret.push_back(result);
- }
-
- i++;
- }
-
- return ret;
-}
-
-void MemoryAddress::Patch(const char* pBytes)
-{
- std::vector<uint8_t> vBytes = HexBytesToString(pBytes);
- Patch(vBytes.data(), vBytes.size());
-}
-
-void MemoryAddress::NOP(const size_t nSize)
-{
- uint8_t* pBytes = new uint8_t[nSize];
-
- memset(pBytes, 0x90, nSize);
- Patch(pBytes, nSize);
-
- delete[] pBytes;
-}
-
-bool MemoryAddress::IsMemoryReadable(const size_t nSize)
-{
- static SYSTEM_INFO sysInfo;
- if (!sysInfo.dwPageSize)
- GetSystemInfo(&sysInfo);
-
- MEMORY_BASIC_INFORMATION memInfo;
- if (!VirtualQuery(reinterpret_cast<LPCVOID>(m_nAddress), &memInfo, sizeof(memInfo)))
- return false;
-
- return memInfo.RegionSize >= nSize && memInfo.State & MEM_COMMIT && !(memInfo.Protect & PAGE_NOACCESS);
-}
-
-CModule::CModule(const HMODULE pModule)
-{
- MODULEINFO mInfo {0};
-
- if (pModule && pModule != INVALID_HANDLE_VALUE)
- GetModuleInformation(GetCurrentProcess(), pModule, &mInfo, sizeof(MODULEINFO));
-
- m_nModuleSize = static_cast<size_t>(mInfo.SizeOfImage);
- m_pModuleBase = reinterpret_cast<uintptr_t>(mInfo.lpBaseOfDll);
- m_nAddress = m_pModuleBase;
-
- if (!m_nModuleSize || !m_pModuleBase)
- return;
-
- m_pDOSHeader = reinterpret_cast<IMAGE_DOS_HEADER*>(m_pModuleBase);
- m_pNTHeaders = reinterpret_cast<IMAGE_NT_HEADERS64*>(m_pModuleBase + m_pDOSHeader->e_lfanew);
-
- const IMAGE_SECTION_HEADER* hSection = IMAGE_FIRST_SECTION(m_pNTHeaders); // Get first image section.
-
- for (WORD i = 0; i < m_pNTHeaders->FileHeader.NumberOfSections; i++) // Loop through the sections.
- {
- const IMAGE_SECTION_HEADER& hCurrentSection = hSection[i]; // Get current section.
-
- ModuleSections_t moduleSection = ModuleSections_t(
- std::string(reinterpret_cast<const char*>(hCurrentSection.Name)),
- static_cast<uintptr_t>(m_pModuleBase + hCurrentSection.VirtualAddress),
- hCurrentSection.SizeOfRawData);
-
- if (!strcmp((const char*)hCurrentSection.Name, ".text"))
- m_ExecutableCode = moduleSection;
- else if (!strcmp((const char*)hCurrentSection.Name, ".pdata"))
- m_ExceptionTable = moduleSection;
- else if (!strcmp((const char*)hCurrentSection.Name, ".data"))
- m_RunTimeData = moduleSection;
- else if (!strcmp((const char*)hCurrentSection.Name, ".rdata"))
- m_ReadOnlyData = moduleSection;
-
- m_vModuleSections.push_back(moduleSection); // Push back a struct with the section data.
- }
-}
-
-CModule::CModule(const char* pModuleName) : CModule(GetModuleHandleA(pModuleName)) {}
-
-MemoryAddress CModule::GetExport(const char* pExportName)
-{
- return MemoryAddress(reinterpret_cast<uintptr_t>(GetProcAddress(reinterpret_cast<HMODULE>(m_nAddress), pExportName)));
-}
-
-MemoryAddress CModule::FindPattern(const uint8_t* pPattern, const char* pMask)
-{
- if (!m_ExecutableCode.IsSectionValid())
- return MemoryAddress();
-
- uint64_t nBase = static_cast<uint64_t>(m_ExecutableCode.m_pSectionBase);
- uint64_t nSize = static_cast<uint64_t>(m_ExecutableCode.m_nSectionSize);
-
- const uint8_t* pData = reinterpret_cast<uint8_t*>(nBase);
- const uint8_t* pEnd = pData + static_cast<uint32_t>(nSize) - strlen(pMask);
-
- int nMasks[64]; // 64*16 = enough masks for 1024 bytes.
- int iNumMasks = static_cast<int>(ceil(static_cast<float>(strlen(pMask)) / 16.f));
-
- memset(nMasks, '\0', iNumMasks * sizeof(int));
- for (intptr_t i = 0; i < iNumMasks; ++i)
- {
- for (intptr_t j = strnlen(pMask + i * 16, 16) - 1; j >= 0; --j)
- {
- if (pMask[i * 16 + j] == 'x')
- {
- _bittestandset(reinterpret_cast<LONG*>(&nMasks[i]), j);
- }
- }
- }
- __m128i xmm1 = _mm_loadu_si128(reinterpret_cast<const __m128i*>(pPattern));
- __m128i xmm2, xmm3, msks;
- for (; pData != pEnd; _mm_prefetch(reinterpret_cast<const char*>(++pData + 64), _MM_HINT_NTA))
- {
- if (pPattern[0] == pData[0])
- {
- xmm2 = _mm_loadu_si128(reinterpret_cast<const __m128i*>(pData));
- msks = _mm_cmpeq_epi8(xmm1, xmm2);
- if ((_mm_movemask_epi8(msks) & nMasks[0]) == nMasks[0])
- {
- for (uintptr_t i = 1; i < static_cast<uintptr_t>(iNumMasks); ++i)
- {
- xmm2 = _mm_loadu_si128(reinterpret_cast<const __m128i*>((pData + i * 16)));
- xmm3 = _mm_loadu_si128(reinterpret_cast<const __m128i*>((pPattern + i * 16)));
- msks = _mm_cmpeq_epi8(xmm2, xmm3);
- if ((_mm_movemask_epi8(msks) & nMasks[i]) == nMasks[i])
- {
- if ((i + 1) == iNumMasks)
- {
- return MemoryAddress(const_cast<uint8_t*>(pData));
- }
- }
- else
- goto CONTINUE;
- }
-
- return MemoryAddress((&*(const_cast<uint8_t*>(pData))));
- }
- }
-
- CONTINUE:;
- }
-
- return MemoryAddress();
-}
-
-inline std::pair<std::vector<uint8_t>, std::string> MaskedBytesFromPattern(const char* pPatternString)
-{
- std::vector<uint8_t> vRet;
- std::string sMask;
-
- int size = strlen(pPatternString);
- for (int i = 0; i < size; i++)
- {
- // If this is a space character, ignore it
- if (isspace(pPatternString[i]))
- continue;
-
- if (pPatternString[i] == '?')
- {
- // Add a wildcard
- vRet.push_back(0);
- sMask.append("?");
- }
- else if (i < size - 1)
- {
- BYTE result = 0;
- for (int j = 0; j < 2; j++)
- {
- int val = 0;
- char c = *(pPatternString + i + j);
- if (c >= 'a')
- {
- val = c - 'a' + 0xA;
- }
- else if (c >= 'A')
- {
- val = c - 'A' + 0xA;
- }
- else if (isdigit(c))
- {
- val = c - '0';
- }
- else
- {
- assert(false, "Failed to parse invalid pattern string.");
- val = -1;
- }
-
- result += (j == 0) ? val * 16 : val;
- }
-
- vRet.push_back(result);
- sMask.append("x");
- }
-
- i++;
- }
-
- return std::make_pair(vRet, sMask);
-}
-
-MemoryAddress CModule::FindPattern(const char* pPattern)
-{
- const auto pattern = MaskedBytesFromPattern(pPattern);
- return FindPattern(pattern.first.data(), pattern.second.c_str());
-}