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
|
#include "include.h"
#include "util/io.h"
#include "util/commands.h"
#include "server/server.h"
constexpr std::string_view version{"0.1.0"};
int main(int argc, char* argv[]) {
io::init(true);
pe::image img("img.dll");
tcp::server client_server("6666");
client_server.start();
client_server.connect_event.add([&](tcp::client& client) {
auto ip = client.get_ip();
io::logger->info("{} connected.", ip);
client.gen_session();
client.write(tcp::packet_t(version, tcp::packet_type::write, client(),
tcp::packet_id::session));
client.state = tcp::client_state::idle;
});
client_server.disconnect_event.add([&](tcp::client& client) {
client.cleanup();
auto it = std::find_if(
client_server().begin(), client_server().end(),
[&](tcp::client& c) { return c.get_socket() == client.get_socket(); });
if (it != client_server().end()) {
client_server().erase(it);
}
io::logger->info("{} disconnected.", client.get_ip());
});
client_server.receive_event.add([&](tcp::packet_t& packet,
tcp::client& client) {
auto session = client();
auto packet_session = packet.session_id;
auto ip = client.get_ip();
auto message = packet();
auto id = packet.id;
if (!packet) {
io::logger->warn("{} sent invalid packet.", ip);
client_server.disconnect_event.call(client);
return;
}
if (packet_session != session) {
io::logger->warn("{} sent wrong session id.", ip);
client_server.disconnect_event.call(client);
return;
}
io::logger->info("{} : {}", packet_session, message);
if (id == tcp::packet_id::hwid) {
client.hwid = message;
io::logger->info("got hwid from {} : {}", ip, message);
if (client_server.bl().find(message)) {
io::logger->warn("{} is hwid banned.", ip);
client.write(tcp::packet_t(message, tcp::packet_type::write, session,
tcp::packet_id::ban));
client_server.disconnect_event.call(client);
return;
}
}
if (id == tcp::packet_id::login_req) {
if (client.state != tcp::client_state::idle) {
return;
}
auto pos = message.find(",");
if (pos != std::string::npos) {
auto user = message.substr(0, pos);
auto pass = message.substr(pos + 1);
user_data data{};
nlohmann::json json;
io::logger->info("{} is trying to login from {}.", user, ip);
int ret = forum_response::api_success;
//int ret = client_server.forum().check_login(user, pass, data);
if (ret == forum_response::api_success) {
if (data.banned) {
io::logger->warn("{} is forum banned, dropping...", user);
json["result"] = tcp::client_response::banned;
client.write(tcp::packet_t(json.dump(), tcp::packet_type::write,
session, tcp::packet_id::login_resp));
client_server.disconnect_event.call(client);
return;
}
// new user/no hwid, register the hwid on the forums
if (data.hwid.empty()) {
io::logger->info("{} is new, registering hwid...", user);
if (!client_server.forum().edit(data.id, "custom_fields[hwid]",
client.hwid)) {
io::logger->warn("failed to register hwid for {}.", user);
}
data.hwid = client.hwid;
}
// invalid hwid
if (data.hwid != client.hwid) {
io::logger->warn("{}'s hwid doesn't match.");
if (!client_server.forum().edit(data.id, "custom_fields[new_hwid]",
client.hwid)) {
io::logger->warn("failed to write new hwid for {}.", user);
}
json["result"] = tcp::client_response::hwid_mismatch;
client.write(tcp::packet_t(json.dump(), tcp::packet_type::write,
session, tcp::packet_id::login_resp));
client_server.disconnect_event.call(client);
return;
}
json["result"] = tcp::client_response::login_success;
json["games"]["csgo"] = {{"version", "1.2"}, {"id", 0}};
json["games"]["csgo beta"] = {{"version", "1.2"}, {"id", 1}};
client.write(tcp::packet_t(json.dump(), tcp::packet_type::write,
session, tcp::packet_id::login_resp));
client.username = user;
client.state = tcp::client_state::logged_in;
io::logger->info("{} logged in successfuly.", user);
}
if (ret == forum_response::api_timeout ||
ret == forum_response::api_fail) {
json["result"] = tcp::client_response::server_error;
io::logger->info("internal server error on {}'s login request.", user);
client.write(tcp::packet_t(json.dump(), tcp::packet_type::write,
session, tcp::packet_id::login_resp));
}
if (ret == forum_response::api_error) {
json["result"] = tcp::client_response::login_fail;
io::logger->info("{} failed to login.", user);
client.write(tcp::packet_t(json.dump(), tcp::packet_type::write,
session, tcp::packet_id::login_resp));
}
}
}
if (id == tcp::packet_id::game_select) {
if(client.state != tcp::client_state::logged_in) {
return;
}
if(!nlohmann::json::accept(message)) {
io::logger->error("{} sent invalid game select packet.", ip);
client_server.disconnect_event.call(client);
return;
}
auto resp = nlohmann::json::parse(message);
int id = resp["id"].get<int>();
nlohmann::json j;
auto nt = img->get_nt_headers();
j["pe"].emplace_back(nt->optional_header.size_image);
j["pe"].emplace_back(nt->optional_header.entry_point);
client.write(tcp::packet_t(j.dump(), tcp::packet_type::write,
session, tcp::packet_id::game_select));
auto imports = img.get_json_imports();
if(client.stream(imports)) {
io::logger->info("sent imports to {}.", client.username);
}
client.state = tcp::client_state::waiting;
// select image
// set message to be pe header
// stream imports
// wait for client to send back a packet with allocation base and fixed imports
}
if (id == tcp::packet_id::image) {
if(client.state != tcp::client_state::waiting) {
return;
}
if(!nlohmann::json::accept(message)) {
io::logger->error("{} sent invalid image packet.", ip);
client_server.disconnect_event.call(client);
return;
}
std::string imports;
client.read_stream(imports);
auto j = nlohmann::json::parse(message);
auto alloc = j["alloc"].get<uintptr_t>();
io::logger->info("{} allocated at {:x}", client.username, alloc);
std::vector<char> image;
img.copy(image);
img.relocate(image, alloc);
img.fix_imports(image, imports);
client.write(tcp::packet_t("ready", tcp::packet_type::write,
session, tcp::packet_id::image));
if(client.stream(image)) {
io::logger->info("sent image to {}.", client.username);
}
client.state = tcp::client_state::injected;
// message contains allocation base
// fixed imports are streamed back/save them in a folder to see if anything went wrong
// stream back the fixed image
// set client status or just drop them
}
client.write(tcp::packet_t(message, tcp::packet_type::write, session));
});
client_server.timeout_event.add([&](tcp::client& client) {
client.cleanup();
auto it = std::find_if(
client_server().begin(), client_server().end(),
[&](tcp::client& c) { return c.get_socket() == client.get_socket(); });
if (it != client_server().end()) {
client_server().erase(it);
}
io::logger->info("{} timed out.", client.get_ip());
});
std::thread t{tcp::server::monitor, std::ref(client_server)};
t.join();
}
|