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
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
240
241
242
243
244
245
246
247
248
249
250
251
252
253
254
255
256
257
258
259
260
261
262
263
264
265
266
267
268
269
270
271
272
273
274
275
|
#include "pch.h"
#include "dedicated.h"
#include "hookutils.h"
#include <iostream>
bool IsDedicated()
{
// temp: should get this from commandline
//return true;
return false;
}
enum EngineState_t
{
DLL_INACTIVE = 0, // no dll
DLL_ACTIVE, // engine is focused
DLL_CLOSE, // closing down dll
DLL_RESTART, // engine is shutting down but will restart right away
DLL_PAUSED, // engine is paused, can become active from this state
};
struct CEngine
{
public:
void* vtable;
int m_nQuitting;
EngineState_t m_nDllState;
EngineState_t m_nNextDllState;
double m_flCurrentTime;
float m_flFrameTime;
double m_flPreviousTime;
float m_flFilteredTime;
float m_flMinFrameTime; // Expected duration of a frame, or zero if it is unlimited.
};
enum HostState_t
{
HS_NEW_GAME = 0,
HS_LOAD_GAME,
HS_CHANGE_LEVEL_SP,
HS_CHANGE_LEVEL_MP,
HS_RUN,
HS_GAME_SHUTDOWN,
HS_SHUTDOWN,
HS_RESTART,
};
struct CHostState
{
HostState_t m_currentState;
HostState_t m_nextState;
float m_vecLocationX;
float m_vecLocationY;
float m_vecLocationZ;
float m_angLocationX;
float m_angLocationY;
float m_angLocationZ;
char m_levelName[32];
// there's more stuff here, just this is all i use atm
};
void InitialiseDedicated(HMODULE engineAddress)
{
spdlog::info("InitialiseDedicated");
//while (!IsDebuggerPresent())
// Sleep(100);
// create binary patches
//{
// // CEngineAPI::SetStartupInfo
// // prevents englishclient_frontend from loading
//
// char* ptr = (char*)engineAddress + 0x1C7CBE;
// TempReadWrite rw(ptr);
//
// // je => jmp
// *ptr = (char)0xEB;
//}
{
// Host_Init
// prevent a particle init that relies on client dll
char* ptr = (char*)engineAddress + 0x156799;
TempReadWrite rw(ptr);
*ptr = (char)0x90;
*(ptr + 1) = (char)0x90;
*(ptr + 2) = (char)0x90;
*(ptr + 3) = (char)0x90;
*(ptr + 4) = (char)0x90;
}
{
// CModAppSystemGroup::Create
// force the engine into dedicated mode by changing the first comparison to IsServerOnly to an assignment
char* ptr = (char*)engineAddress + 0x1C4EBD;
TempReadWrite rw(ptr);
// cmp => mov
*(ptr + 1) = (char)0xC6;
*(ptr + 2) = (char)0x87;
// 00 => 01
*((char*)ptr + 7) = (char)0x01;
}
{
// Some init that i'm not sure of that crashes
char* ptr = (char*)engineAddress + 0x156A63;
TempReadWrite rw(ptr);
// nop the call to it
*ptr = (char)0x90;
*(ptr + 1) = (char)0x90;
*(ptr + 2) = (char)0x90;
*(ptr + 3) = (char)0x90;
*(ptr + 4) = (char)0x90;
}
{
// runframeserver
char* ptr = (char*)engineAddress + 0x159819;
TempReadWrite rw(ptr);
// nop some access violations
*ptr = (char)0x90;
*(ptr + 1) = (char)0x90;
*(ptr + 2) = (char)0x90;
*(ptr + 3) = (char)0x90;
*(ptr + 4) = (char)0x90;
*(ptr + 5) = (char)0x90;
*(ptr + 6) = (char)0x90;
*(ptr + 7) = (char)0x90;
*(ptr + 8) = (char)0x90;
*(ptr + 9) = (char)0x90;
*(ptr + 10) = (char)0x90;
*(ptr + 11) = (char)0x90;
*(ptr + 12) = (char)0x90;
*(ptr + 13) = (char)0x90;
*(ptr + 14) = (char)0x90;
*(ptr + 15) = (char)0x90;
*(ptr + 16) = (char)0x90;
}
{
// HostState_State_NewGame
char* ptr = (char*)engineAddress + 0x156B4C;
TempReadWrite rw(ptr);
// nop some access violations
*ptr = (char)0x90;
*(ptr + 1) = (char)0x90;
*(ptr + 2) = (char)0x90;
*(ptr + 3) = (char)0x90;
*(ptr + 4) = (char)0x90;
*(ptr + 5) = (char)0x90;
*(ptr + 6) = (char)0x90;
*(ptr + 7) = (char)0x90;
*(ptr + 8) = (char)0x90;
*(ptr + 9) = (char)0x90;
*(ptr + 10) = (char)0x90;
*(ptr + 11) = (char)0x90;
*(ptr + 12) = (char)0x90;
*(ptr + 13) = (char)0x90;
*(ptr + 14) = (char)0x90;
*(ptr + 15) = (char)0x90;
*(ptr + 16) = (char)0x90;
*(ptr + 17) = (char)0x90;
*(ptr + 18) = (char)0x90;
*(ptr + 19) = (char)0x90;
*(ptr + 20) = (char)0x90;
*(ptr + 21) = (char)0x90;
}
{
// HostState_State_NewGame
char* ptr = (char*)engineAddress + 0xB934C;
TempReadWrite rw(ptr);
// nop an access violation
*ptr = (char)0x90;
*(ptr + 1) = (char)0x90;
*(ptr + 2) = (char)0x90;
*(ptr + 3) = (char)0x90;
*(ptr + 4) = (char)0x90;
*(ptr + 5) = (char)0x90;
*(ptr + 6) = (char)0x90;
*(ptr + 7) = (char)0x90;
*(ptr + 8) = (char)0x90;
}
{
// some inputsystem bullshit
char* ptr = (char*)engineAddress + 0x1CEE28;
TempReadWrite rw(ptr);
// nop an accessviolation: temp because we still create game window atm
*ptr = (char)0x90;
*(ptr + 1) = (char)0x90;
*(ptr + 2) = (char)0x90;
}
// materialsystem later:
// do materialsystem + 5f0f1 je => jmp to make material loading not die
CDedicatedExports* dedicatedApi = new CDedicatedExports;
dedicatedApi->Sys_Printf = Sys_Printf;
dedicatedApi->RunServer = RunServer;
// double ptr to dedicatedApi
intptr_t* ptr = (intptr_t*)((char*)engineAddress + 0x13F0B668);
// ptr to dedicatedApi
intptr_t* doublePtr = new intptr_t;
*doublePtr = (intptr_t)dedicatedApi;
// ptr to ptr
*ptr = (intptr_t)doublePtr;
// extra potential patches:
// nop engine.dll+1c67d1 and +1c67d8 to skip videomode creategamewindow
// also look into launcher.dll+d381, seems to cause renderthread to get made
// this crashes HARD if no window which makes sense tbh
// also look into materialsystem + 5B344 since it seems to be the base of all the renderthread stuff
}
void Sys_Printf(CDedicatedExports* dedicated, char* msg)
{
spdlog::info("[DEDICATED PRINT] {}", msg);
}
typedef void(*CHostState__InitType)(CHostState* self);
void RunServer(CDedicatedExports* dedicated)
{
while (!IsDebuggerPresent())Sleep(100);
Sys_Printf(dedicated, (char*)"CDedicatedServerAPI::RunServer(): starting");
HMODULE engine = GetModuleHandleA("engine.dll");
CEngine__Frame engineFrame = (CEngine__Frame)((char*)engine + 0x1C8650);
CEngine* cEnginePtr = (CEngine*)((char*)engine + 0x7D70C8);
CHostState* cHostStatePtr = (CHostState*)((char*)engine + 0x7CF180);
CHostState__InitType CHostState__Init = (CHostState__InitType)((char*)engine + 0x16E110);
// call once to init
engineFrame(cEnginePtr);
// init hoststate, if we don't do this, we get a crash later on
CHostState__Init(cHostStatePtr);
// set up engine and host states to allow us to enter CHostState::FrameUpdate, with the state HS_NEW_GAME
cEnginePtr->m_nNextDllState = EngineState_t::DLL_ACTIVE;
cHostStatePtr->m_nextState = HostState_t::HS_NEW_GAME;
strcpy(cHostStatePtr->m_levelName, "mp_lobby"); // set map to load into
while (true)
{
engineFrame(cEnginePtr);
//engineApiStartSimulation(nullptr, true);
Sys_Printf(dedicated, (char*)"engine->Frame()");
Sleep(50);
}
}
|
