249 lines
6.8 KiB
C++
249 lines
6.8 KiB
C++
#include "misc.h"
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#include "const.h"
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#include <Psapi.h>
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#include <QTextStream>
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QString GetFullModuleName(DWORD processId, HMODULE module)
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{
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HANDLE handle = OpenProcess(PROCESS_QUERY_INFORMATION | PROCESS_VM_READ, FALSE, processId);
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wchar_t buffer[MAX_PATH] = {};
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GetModuleFileNameExW(handle, module, buffer, MAX_PATH);
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CloseHandle(handle);
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return QString::fromWCharArray(buffer);
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}
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QString GetModuleName(DWORD processId, HMODULE module)
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{
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QString fullName = GetFullModuleName(processId, module);
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return fullName.remove(0, fullName.lastIndexOf("\\") + 1);
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}
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QMultiHash<QString, DWORD> GetAllProcesses()
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{
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DWORD allProcessIds[0x1000];
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DWORD spaceUsed;
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QMultiHash<QString, DWORD> ret;
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if (!EnumProcesses(allProcessIds, sizeof(allProcessIds), &spaceUsed)) return ret;
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for (int i = 0; i < spaceUsed / sizeof(DWORD); ++i)
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if (GetModuleName(allProcessIds[i]).size())
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ret.insert(GetModuleName(allProcessIds[i]), allProcessIds[i]);
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return ret;
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}
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namespace
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{
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std::optional<HookParam> ParseRCode(QString RCode)
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{
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HookParam hp = {};
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hp.type |= DIRECT_READ;
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// {S|Q|V}
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switch (RCode.at(0).unicode())
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{
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case L'S':
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break;
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case L'Q':
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hp.type |= USING_STRING | USING_UNICODE;
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break;
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case L'V':
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hp.type |= USING_STRING | USING_UTF8;
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break;
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default:
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return {};
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}
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RCode.remove(0, 1);
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// [*deref_offset|0]
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if (RCode.at(0).unicode() == L'0') RCode.remove(0, 1); // Legacy
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QRegularExpressionMatch deref = QRegularExpression("^\\*(\\-?[[:xdigit:]]+)").match(RCode);
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if (deref.hasMatch())
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{
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hp.type |= DATA_INDIRECT;
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hp.index = deref.captured(1).toInt(nullptr, 16);
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RCode.remove(0, deref.captured(0).length());
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}
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// @addr
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QRegularExpressionMatch address = QRegularExpression("^@([[:xdigit:]]+)$").match(RCode);
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if (!address.hasMatch()) return {};
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hp.address = address.captured(1).toULongLong(nullptr, 16);
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return hp;
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}
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std::optional<HookParam> ParseHCode(QString HCode)
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{
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HookParam hp = {};
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// {A|B|W|S|Q|V}
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switch (HCode.at(0).unicode())
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{
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case L'S':
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hp.type |= USING_STRING;
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break;
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case L'A':
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hp.type |= BIG_ENDIAN;
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hp.length_offset = 1;
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break;
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case L'B':
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hp.length_offset = 1;
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break;
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case L'Q':
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hp.type |= USING_STRING | USING_UNICODE;
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break;
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case L'W':
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hp.type |= USING_UNICODE;
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hp.length_offset = 1;
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break;
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case L'V':
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hp.type |= USING_STRING | USING_UTF8;
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break;
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default:
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return {};
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}
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HCode.remove(0, 1);
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// [N]
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if (HCode.at(0).unicode() == L'N')
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{
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hp.type |= NO_CONTEXT;
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HCode.remove(0, 1);
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}
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// data_offset
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QRegularExpressionMatch dataOffset = QRegularExpression("^\\-?[[:xdigit:]]+").match(HCode);
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if (!dataOffset.hasMatch()) return {};
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hp.offset = dataOffset.captured(0).toInt(nullptr, 16);
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HCode.remove(0, dataOffset.captured(0).length());
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// [*deref_offset1]
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QRegularExpressionMatch deref1 = QRegularExpression("^\\*(\\-?[[:xdigit:]]+)").match(HCode);
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if (deref1.hasMatch())
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{
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hp.type |= DATA_INDIRECT;
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hp.index = deref1.captured(1).toInt(nullptr, 16);
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HCode.remove(0, deref1.captured(0).length());
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}
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// [:split_offset[*deref_offset2]]
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QRegularExpressionMatch splitOffset = QRegularExpression("^\\:(\\-?[[:xdigit:]]+)").match(HCode);
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if (splitOffset.hasMatch())
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{
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hp.type |= USING_SPLIT;
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hp.split = splitOffset.captured(1).toInt(nullptr, 16);
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HCode.remove(0, splitOffset.captured(0).length());
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QRegularExpressionMatch deref2 = QRegularExpression("^\\*(\\-?[[:xdigit:]]+)").match(HCode);
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if (deref2.hasMatch())
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{
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hp.type |= SPLIT_INDIRECT;
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hp.split_index = deref2.captured(1).toInt(nullptr, 16);
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HCode.remove(0, deref2.captured(0).length());
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}
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}
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// @addr[:module[:func]]
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QStringList addressPieces = HCode.split(":");
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QRegularExpressionMatch address = QRegularExpression("^@([[:xdigit:]]+)$").match(addressPieces.at(0));
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if (!address.hasMatch()) return {};
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hp.address = address.captured(1).toULongLong(nullptr, 16);
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if (addressPieces.size() > 1)
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{
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hp.type |= MODULE_OFFSET;
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wcscpy_s<MAX_MODULE_SIZE>(hp.module, addressPieces.at(1).toStdWString().c_str());
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}
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if (addressPieces.size() > 2)
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{
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hp.type |= FUNCTION_OFFSET;
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strcpy_s<MAX_MODULE_SIZE>(hp.function, addressPieces.at(2).toStdString().c_str());
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}
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// ITH has registers offset by 4 vs AGTH: need this to correct
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if (hp.offset < 0) hp.offset -= 4;
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if (hp.split < 0) hp.split -= 4;
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return hp;
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}
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QString GenerateHCode(HookParam hp, DWORD processId)
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{
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QString HCode = "/H";
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QTextStream codeBuilder(&HCode);
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codeBuilder.setIntegerBase(16);
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codeBuilder.setNumberFlags(QTextStream::UppercaseDigits);
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if (hp.type & USING_UNICODE)
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{
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if (hp.type & USING_STRING) codeBuilder << "Q";
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else codeBuilder << "W";
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}
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else
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{
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if (hp.type & USING_UTF8) codeBuilder << "V";
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else if (hp.type & USING_STRING) codeBuilder << "S";
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else if (hp.type & BIG_ENDIAN) codeBuilder << "A";
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else codeBuilder << "B";
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}
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if (hp.type & NO_CONTEXT) codeBuilder << "N";
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if (hp.offset < 0) hp.offset += 4;
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if (hp.split < 0) hp.split += 4;
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codeBuilder << hp.offset;
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if (hp.type & DATA_INDIRECT) codeBuilder << "*" << hp.index;
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if (hp.type & USING_SPLIT) codeBuilder << ":" << hp.split;
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if (hp.type & SPLIT_INDIRECT) codeBuilder << "*" << hp.split_index;
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// Attempt to make the address relative
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if (!(hp.type & MODULE_OFFSET))
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{
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HANDLE processHandle;
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if (!(processHandle = OpenProcess(PROCESS_VM_READ | PROCESS_QUERY_INFORMATION, FALSE, processId))) goto fin;
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MEMORY_BASIC_INFORMATION info;
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if (!VirtualQueryEx(processHandle, (LPCVOID)hp.address, &info, sizeof(info))) goto fin;
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QString moduleName = GetModuleName(processId, (HMODULE)info.AllocationBase);
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if (moduleName.size() == 0) goto fin;
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hp.type |= MODULE_OFFSET;
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hp.address -= (uint64_t)info.AllocationBase;
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wcscpy_s<MAX_MODULE_SIZE>(hp.module, moduleName.toStdWString().c_str());
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}
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fin:
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codeBuilder << "@" << hp.address;
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if (hp.type & MODULE_OFFSET) codeBuilder << ":" << QString::fromWCharArray(hp.module);
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if (hp.type & FUNCTION_OFFSET) codeBuilder << ":" << hp.function;
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return HCode;
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}
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QString GenerateRCode(HookParam hp)
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{
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QString RCode = "/R";
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QTextStream codeBuilder(&RCode);
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codeBuilder.setIntegerBase(16);
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codeBuilder.setNumberFlags(QTextStream::UppercaseDigits);
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if (hp.type & USING_UNICODE) codeBuilder << "Q";
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else if (hp.type & USING_UTF8) codeBuilder << "V";
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else codeBuilder << "S";
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if (hp.type & DATA_INDIRECT) codeBuilder << "*" << hp.index;
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codeBuilder << "@" << hp.address;
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return RCode;
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}
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}
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std::optional<HookParam> ParseCode(QString code)
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{
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if (code.startsWith("/H")) return ParseHCode(code.remove(0, 2));
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else if (code.startsWith("/R")) return ParseRCode(code.remove(0, 2));
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else return {};
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}
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QString GenerateCode(HookParam hp, DWORD processId)
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{
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if (hp.type & DIRECT_READ) return GenerateRCode(hp);
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else return GenerateHCode(hp, processId);
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}
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