1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
|
#include "Memory.h"
#include <psapi.h>
#include <tlhelp32.h>
#include <iostream>
#include <cassert>
#undef PROCESSENTRY32
#undef Process32Next
[[nodiscard]]
bool Memory::Initialize(const std::wstring& processName) {
// First, get the handle of the process
PROCESSENTRY32W entry;
entry.dwSize = sizeof(entry);
HANDLE snapshot = CreateToolhelp32Snapshot(TH32CS_SNAPPROCESS, 0);
while (Process32NextW(snapshot, &entry)) {
if (processName == entry.szExeFile) {
_handle = OpenProcess(PROCESS_ALL_ACCESS, FALSE, entry.th32ProcessID);
break;
}
}
if (!_handle) {
std::cerr << "Couldn't find " << processName.c_str() << ", is it open?" << std::endl;
return false;
}
// Next, get the process base address
DWORD numModules;
std::vector<HMODULE> moduleList(1024);
EnumProcessModulesEx(_handle, &moduleList[0], static_cast<DWORD>(moduleList.size()), &numModules, 3);
std::wstring name(64, '\0');
for (DWORD i = 0; i < numModules / sizeof(HMODULE); i++) {
int length = GetModuleBaseNameW(_handle, moduleList[i], &name[0], static_cast<DWORD>(name.size()));
name.resize(length);
if (processName == name) {
_baseAddress = (uintptr_t)moduleList[i];
break;
}
}
if (_baseAddress == 0) {
std::cerr << "Couldn't locate base address" << std::endl;
return false;
}
return true;
}
ProcStatus Memory::Heartbeat(const std::wstring& processName) {
if (!_handle && !Initialize(processName)) {
// Couldn't initialize, definitely not running
return ProcStatus::NotRunning;
}
DWORD exitCode = 0;
GetExitCodeProcess(_handle, &exitCode);
if (exitCode != STILL_ACTIVE) {
// Process has exited, clean up.
_computedAddresses.clear();
_handle = NULL;
return ProcStatus::NotRunning;
}
int currentFrame = 0x7FFFFFFF;
if (GLOBALS == 0x5B28C0) {
currentFrame = ReadData<int>({0x5BE3B0}, 1)[0];
} else if (GLOBALS == 0x62D0A0) {
currentFrame = ReadData<int>({0x63954C}, 1)[0];
} else {
assert(false);
}
if (currentFrame < 80) return ProcStatus::NewGame;
// TODO: Some way to return ProcStatus::Randomized vs ProcStatus::NotRandomized vs ProcStatus::DeRandomized;
return ProcStatus::Running;
}
Memory::~Memory() {
if (_handle != nullptr) {
CloseHandle(_handle);
}
}
void Memory::AddSigScan(const std::vector<byte>& scanBytes, const std::function<void(int index)>& scanFunc)
{
_sigScans[scanBytes] = {scanFunc, false};
}
int find(const std::vector<byte> &data, const std::vector<byte>& search, size_t startIndex = 0) {
for (size_t i=startIndex; i<data.size() - search.size(); i++) {
bool match = true;
for (size_t j=0; j<search.size(); j++) {
if (data[i+j] == search[j]) {
continue;
}
match = false;
break;
}
if (match) return static_cast<int>(i);
}
return -1;
}
int Memory::ExecuteSigScans()
{
for (int i=0; i<0x200000; i+=0x1000) {
std::vector<byte> data = ReadData<byte>({i}, 0x1100);
for (auto& [scanBytes, sigScan] : _sigScans) {
if (sigScan.found) continue;
int index = find(data, scanBytes);
if (index == -1) continue;
sigScan.scanFunc(i + index);
sigScan.found = true;
}
}
int notFound = 0;
for (auto it : _sigScans) {
if (it.second.found == false) notFound++;
}
return notFound;
}
void Memory::ThrowError() {
std::wstring message(256, '\0');
int length = FormatMessageW(FORMAT_MESSAGE_FROM_SYSTEM, nullptr, GetLastError(), 1024, &message[0], static_cast<DWORD>(message.size()), nullptr);
message.resize(length);
#ifndef NDEBUG
MessageBox(NULL, message.c_str(), L"Please tell darkid about this", MB_OK);
#endif
}
void* Memory::ComputeOffset(std::vector<int> offsets) {
// Leave off the last offset, since it will be either read/write, and may not be of type unitptr_t.
int final_offset = offsets.back();
offsets.pop_back();
uintptr_t cumulativeAddress = _baseAddress;
for (const int offset : offsets) {
cumulativeAddress += offset;
const auto search = _computedAddresses.find(cumulativeAddress);
if (search == std::end(_computedAddresses)) {
// If the address is not yet computed, then compute it.
uintptr_t computedAddress = 0;
if (bool result = !ReadProcessMemory(_handle, reinterpret_cast<LPVOID>(cumulativeAddress), &computedAddress, sizeof(uintptr_t), NULL)) {
if (GetLastError() == ERROR_PARTIAL_COPY) {
int k = 1;
}
ThrowError();
}
_computedAddresses[cumulativeAddress] = computedAddress;
}
cumulativeAddress = _computedAddresses[cumulativeAddress];
}
return reinterpret_cast<void*>(cumulativeAddress + final_offset);
}
|
