YumeMichi/cgss-http-hook
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Hook ObscuredPrefs startup values

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Signed-off-by: Sean Du <do4suki@gmail.com>
This commit is contained in:
YumeMichi
2026-07-08 12:39:06 +08:00
parent 8d4e1321ff
commit f299573f42
6 changed files with 584 additions and 3 deletions
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src/config.cpp
+6 -1
View File
@@ -64,7 +64,8 @@ namespace config {
" \"force_http\": true,\r\n"
" \"api_url\": \"\",\r\n"
" \"asset_url\": \"asset-starlight-stage.akamaized.net/\",\r\n"
" \"launch_borderless_helper\": true\r\n"
" \"launch_borderless_helper\": true,\r\n"
" \"viewer_id\": 589089289\r\n"
"}\r\n";
}
@@ -120,12 +121,16 @@ namespace config {
read_string(document, "api_url", g_urls.api_url);
read_string(document, "asset_url", g_urls.asset_url);
read_bool(document, "launch_borderless_helper", g_urls.launch_borderless_helper);
if (document.HasMember("viewer_id") && document["viewer_id"].IsInt()) {
g_urls.viewer_id = document["viewer_id"].GetInt();
}
hook_logf("[cgss-dmm-hook] force_http=%s", g_urls.force_http ? "true" : "false");
hook_logf(
"[cgss-dmm-hook] launch_borderless_helper=%s",
g_urls.launch_borderless_helper ? "true" : "false"
);
hook_logf("[cgss-dmm-hook] viewer_id=%d", g_urls.viewer_id);
if (!g_urls.api_url.empty()) {
hook_logf("[cgss-dmm-hook] normalized api_url=%s", g_urls.api_url.c_str());
src/config.hpp
+1
View File
@@ -6,6 +6,7 @@ namespace config {
std::string api_url;
std::string asset_url;
bool launch_borderless_helper = true;
int viewer_id = 589089289;
};
bool load();
src/hook.cpp
+193
View File
@@ -8,10 +8,14 @@ namespace {
using GetStringFn = void* (*)(const MethodInfo*);
using SetStringFn = void (*)(void*, const MethodInfo*);
using SetSchemeModeFn = void (*)(int, const MethodInfo*);
using ObscuredPrefsGetIntFn = int (*)(void*, int, const MethodInfo*);
using ObscuredPrefsHasKeyFn = bool (*)(void*, const MethodInfo*);
using ObscuredPrefsSetIntFn = void (*)(void*, int, const MethodInfo*);
constexpr int kHttpSchemeType = 0;
constexpr DWORD kHookPollIntervalMs = 500;
constexpr DWORD kGameAssemblySettleDelayMs = 100;
constexpr int kHookPollMaxAttempts = 600;
constexpr LONG kPrefsHookLogLimit = 32;
volatile LONG g_hook_installed = 0;
GetSchemeTypeFn g_orig_get_scheme_type = nullptr;
@@ -28,6 +32,9 @@ namespace {
SetStringFn g_orig_custom_preference_set_tele_scope_server_url = nullptr;
SetStringFn g_orig_custom_preference_set_concert_server_url = nullptr;
SetStringFn g_orig_custom_preference_set_resource_server_url = nullptr;
ObscuredPrefsGetIntFn g_orig_obscured_prefs_get_int = nullptr;
ObscuredPrefsHasKeyFn g_orig_obscured_prefs_has_key = nullptr;
ObscuredPrefsSetIntFn g_orig_obscured_prefs_set_int = nullptr;
volatile LONG g_logged_gameassembly = 0;
volatile LONG g_exports_state = 0;
ULONGLONG g_gameassembly_seen_tick = 0;
@@ -45,6 +52,92 @@ namespace {
volatile LONG g_cp_set_tele_scope_hook_called = 0;
volatile LONG g_cp_set_concert_hook_called = 0;
volatile LONG g_cp_set_resource_hook_called = 0;
volatile LONG g_obscured_get_int_hook_calls = 0;
volatile LONG g_obscured_has_key_hook_calls = 0;
volatile LONG g_obscured_set_int_hook_calls = 0;
struct ObscuredIntOverride {
const char* key;
int value;
};
constexpr ObscuredIntOverride kObscuredIntOverrides[] = {
{"TUTORIAL_STEP", 1000},
{"TUTORIAL_LOADED_FROM_SERVER_FLAG", 0},
{"TUTORIAL_IS_DIRTY_LOCAL_DATA", 0},
{"POLICY_PRE_ANNOUNCE_DATE", 1753452686},
{"POLICY_ANNOUNCE_DATE", 1753452686},
{"BN_CONTENT_RUN", 2},
{"BN_CONTENT_AGREE_ANALYSIS", 1},
{"BN_CONTENT_AGREE_ADVERTISEMENT", 1},
};
const char* il2cpp_string_chars(void* string_object) {
if (!string_object) {
return nullptr;
}
auto* raw = reinterpret_cast<const unsigned char*>(string_object);
return reinterpret_cast<const char*>(raw + 16);
}
std::string il2cpp_string_to_utf8(void* string_object) {
if (!string_object) {
return {};
}
struct Il2CppStringLayout {
void* klass;
void* monitor;
int32_t length;
wchar_t chars[1];
};
auto* string_value = reinterpret_cast<const Il2CppStringLayout*>(string_object);
if (string_value->length <= 0) {
return {};
}
int size = WideCharToMultiByte(
CP_UTF8,
0,
string_value->chars,
string_value->length,
nullptr,
0,
nullptr,
nullptr
);
if (size <= 0) {
return {};
}
std::string result(static_cast<size_t>(size), '\0');
WideCharToMultiByte(
CP_UTF8,
0,
string_value->chars,
string_value->length,
result.data(),
size,
nullptr,
nullptr
);
return result;
}
bool lookup_obscured_int_override(const std::string& key, int& out_value) {
if (key == "VIEWER_ID") {
out_value = config::get().viewer_id;
return true;
}
for (const auto& entry : kObscuredIntOverrides) {
if (key == entry.key) {
out_value = entry.value;
return true;
}
}
return false;
}
void* make_api_url_string() {
const auto& urls = config::get();
@@ -216,6 +309,67 @@ namespace {
}
}
int obscured_prefs_get_int_hook(void* key, int default_value, const MethodInfo* method) {
auto key_string = il2cpp_string_to_utf8(key);
int override_value = 0;
bool matched = lookup_obscured_int_override(key_string, override_value);
LONG count = InterlockedIncrement(&g_obscured_get_int_hook_calls);
if (count <= kPrefsHookLogLimit) {
hook_logf(
"[cgss-dmm-hook] ObscuredPrefs.GetInt hook invoked key=%s matched=%s value=%d default=%d count=%ld",
key_string.empty() ? "(null)" : key_string.c_str(),
matched ? "true" : "false",
matched ? override_value : default_value,
default_value,
count
);
}
if (matched) {
return override_value;
}
return g_orig_obscured_prefs_get_int ? g_orig_obscured_prefs_get_int(key, default_value, method)
: default_value;
}
bool obscured_prefs_has_key_hook(void* key, const MethodInfo* method) {
auto key_string = il2cpp_string_to_utf8(key);
int override_value = 0;
bool matched = lookup_obscured_int_override(key_string, override_value);
LONG count = InterlockedIncrement(&g_obscured_has_key_hook_calls);
if (count <= kPrefsHookLogLimit) {
hook_logf(
"[cgss-dmm-hook] ObscuredPrefs.HasKey hook invoked key=%s matched=%s count=%ld",
key_string.empty() ? "(null)" : key_string.c_str(),
matched ? "true" : "false",
count
);
}
if (matched) {
return true;
}
return g_orig_obscured_prefs_has_key ? g_orig_obscured_prefs_has_key(key, method) : false;
}
void obscured_prefs_set_int_hook(void* key, int value, const MethodInfo* method) {
auto key_string = il2cpp_string_to_utf8(key);
int override_value = 0;
bool matched = lookup_obscured_int_override(key_string, override_value);
LONG count = InterlockedIncrement(&g_obscured_set_int_hook_calls);
if (count <= kPrefsHookLogLimit) {
hook_logf(
"[cgss-dmm-hook] ObscuredPrefs.SetInt hook invoked key=%s matched=%s incoming=%d stored=%d count=%ld",
key_string.empty() ? "(null)" : key_string.c_str(),
matched ? "true" : "false",
value,
matched ? override_value : value,
count
);
}
if (g_orig_obscured_prefs_set_int) {
g_orig_obscured_prefs_set_int(key, matched ? override_value : value, method);
}
}
void patch_custom_preference_scheme(bool log_success = true) {
if (!config::get().force_http) {
return;
@@ -403,6 +557,27 @@ namespace {
auto cp_set_resource_server_url_addr = il2cpp_symbols::get_method_pointer(
"Assembly-CSharp.dll", "Cute", "CustomPreference", "SetResourceServerURL", 1
);
auto obscured_prefs_get_int_addr = il2cpp_symbols::get_method_pointer(
"Assembly-CSharp.dll",
"CodeStage.AntiCheat.ObscuredTypes",
"ObscuredPrefs",
"GetInt",
2
);
auto obscured_prefs_has_key_addr = il2cpp_symbols::get_method_pointer(
"Assembly-CSharp.dll",
"CodeStage.AntiCheat.ObscuredTypes",
"ObscuredPrefs",
"HasKey",
1
);
auto obscured_prefs_set_int_addr = il2cpp_symbols::get_method_pointer(
"Assembly-CSharp.dll",
"CodeStage.AntiCheat.ObscuredTypes",
"ObscuredPrefs",
"SetInt",
2
);
auto mh_status = MH_Initialize();
if (mh_status != MH_OK && mh_status != MH_ERROR_ALREADY_INITIALIZED) {
@@ -530,6 +705,24 @@ namespace {
"Cute.CustomPreference.SetResourceServerURL"
);
}
hook_method(
obscured_prefs_get_int_addr,
reinterpret_cast<void*>(&obscured_prefs_get_int_hook),
reinterpret_cast<void**>(&g_orig_obscured_prefs_get_int),
"CodeStage.AntiCheat.ObscuredTypes.ObscuredPrefs.GetInt"
);
hook_method(
obscured_prefs_has_key_addr,
reinterpret_cast<void*>(&obscured_prefs_has_key_hook),
reinterpret_cast<void**>(&g_orig_obscured_prefs_has_key),
"CodeStage.AntiCheat.ObscuredTypes.ObscuredPrefs.HasKey"
);
hook_method(
obscured_prefs_set_int_addr,
reinterpret_cast<void*>(&obscured_prefs_set_int_hook),
reinterpret_cast<void**>(&g_orig_obscured_prefs_set_int),
"CodeStage.AntiCheat.ObscuredTypes.ObscuredPrefs.SetInt"
);
InterlockedExchange(&g_hook_installed, 1);
if (urls.force_http) {