diff options
Diffstat (limited to 'NorthstarDLL/NSMem.h')
| -rw-r--r-- | NorthstarDLL/NSMem.h | 212 |
1 files changed, 0 insertions, 212 deletions
diff --git a/NorthstarDLL/NSMem.h b/NorthstarDLL/NSMem.h deleted file mode 100644 index 8012ea87..00000000 --- a/NorthstarDLL/NSMem.h +++ /dev/null @@ -1,212 +0,0 @@ -#pragma once -#include "pch.h" - -// KittenPopo's memory stuff, made for northstar (because I really can't handle working with northstar's original memory stuff tbh) - -#pragma region Pattern Scanning -namespace NSMem -{ - inline std::vector<int> HexBytesToString(const char* str) - { - std::vector<int> patternNums; - int size = strlen(str); - for (int i = 0; i < size; i++) - { - char c = str[i]; - - // If this is a space character, ignore it - if (c == ' ' || c == '\t') - continue; - - if (c == '?') - { - // Add a wildcard (-1) - patternNums.push_back(-1); - } - else if (i < size - 1) - { - BYTE result = 0; - for (int j = 0; j < 2; j++) - { - int val = 0; - char c = *(str + 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; - } - patternNums.push_back(result); - } - - i++; - } - - return patternNums; - } - - inline void* PatternScan(void* module, const int* pattern, int patternSize, int offset) - { - if (!module) - return NULL; - - auto dosHeader = (PIMAGE_DOS_HEADER)module; - auto ntHeaders = (PIMAGE_NT_HEADERS)((BYTE*)module + dosHeader->e_lfanew); - - auto sizeOfImage = ntHeaders->OptionalHeader.SizeOfImage; - - auto scanBytes = (BYTE*)module; - - for (auto i = 0; i < sizeOfImage - patternSize; ++i) - { - bool found = true; - for (auto j = 0; j < patternSize; ++j) - { - if (scanBytes[i + j] != pattern[j] && pattern[j] != -1) - { - found = false; - break; - } - } - - if (found) - { - uintptr_t addressInt = (uintptr_t)(&scanBytes[i]) + offset; - return (uint8_t*)addressInt; - } - } - - return nullptr; - } - - inline void* PatternScan(const char* moduleName, const char* pattern, int offset = 0) - { - std::vector<int> patternNums = HexBytesToString(pattern); - - return PatternScan(GetModuleHandleA(moduleName), &patternNums[0], patternNums.size(), offset); - } - - inline void BytePatch(uintptr_t address, const BYTE* vals, int size) - { - WriteProcessMemory(GetCurrentProcess(), (LPVOID)address, vals, size, NULL); - } - - inline void BytePatch(uintptr_t address, std::initializer_list<BYTE> vals) - { - std::vector<BYTE> bytes = vals; - if (!bytes.empty()) - BytePatch(address, &bytes[0], bytes.size()); - } - - inline void BytePatch(uintptr_t address, const char* bytesStr) - { - std::vector<int> byteInts = HexBytesToString(bytesStr); - std::vector<BYTE> bytes; - for (int v : byteInts) - bytes.push_back(v); - - if (!bytes.empty()) - BytePatch(address, &bytes[0], bytes.size()); - } - - inline void NOP(uintptr_t address, int size) - { - BYTE* buf = (BYTE*)malloc(size); - memset(buf, 0x90, size); - BytePatch(address, buf, size); - free(buf); - } - - inline bool IsMemoryReadable(void* ptr, size_t size) - { - static SYSTEM_INFO sysInfo; - if (!sysInfo.dwPageSize) - GetSystemInfo(&sysInfo); // This should always be 4096 unless ur playing on NES or some shit but whatever - - MEMORY_BASIC_INFORMATION memInfo; - - if (!VirtualQuery(ptr, &memInfo, sizeof(memInfo))) - return false; - - if (memInfo.RegionSize < size) - return false; - - return (memInfo.State & MEM_COMMIT) && !(memInfo.Protect & PAGE_NOACCESS); - } -} // namespace NSMem - -#pragma region KHOOK -struct KHookPatternInfo -{ - const char *moduleName, *pattern; - int offset = 0; - - KHookPatternInfo(const char* moduleName, const char* pattern, int offset = 0) : moduleName(moduleName), pattern(pattern), offset(offset) - { - } -}; - -struct KHook -{ - KHookPatternInfo targetFunc; - void* targetFuncAddr; - void* hookFunc; - void** original; - - static inline std::vector<KHook*> _allHooks; - - KHook(KHookPatternInfo targetFunc, void* hookFunc, void** original) : targetFunc(targetFunc) - { - this->hookFunc = hookFunc; - this->original = original; - _allHooks.push_back(this); - } - - bool Setup() - { - targetFuncAddr = NSMem::PatternScan(targetFunc.moduleName, targetFunc.pattern, targetFunc.offset); - if (!targetFuncAddr) - return false; - - return MH_CreateHook(targetFuncAddr, hookFunc, original) == MH_OK; - } - - // Returns true if succeeded - static bool InitAllHooks() - { - for (KHook* hook : _allHooks) - { - if (hook->Setup()) - { - //spdlog::info("KHook hooked at {}", hook->targetFuncAddr); - spdlog::info("KHOOK {} at {}", hook->targetFunc.pattern, hook->targetFuncAddr); - } - else - { - return false; - } - } - - return MH_EnableHook(MH_ALL_HOOKS) == MH_OK; - } -}; -#define KHOOK(name, funcPatternInfo, returnType, convention, args) \ - returnType convention hk##name args; \ - auto o##name = (returnType(convention*) args)0; \ - KHook k##name = KHook(KHookPatternInfo funcPatternInfo, &hk##name, (void**)&o##name); \ - returnType convention hk##name args -#pragma endregion |