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add a switch for zygisk module

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This commit is contained in:
5ec1cff
2024-07-13 16:53:06 +08:00
parent 2b18146164
commit 812d2911b2
2 changed files with 24 additions and 2 deletions
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7
README.md
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@@ -37,3 +37,10 @@ format:
</Keybox>
</AndroidAttestation>
```
## Build Vars Spoofing
If you can not pass strong integrity, you can try to enable build vars spoofing
by creating a file in `/data/adb/modules/tricky_store/spoof_build_vars`.
Zygisk (or Zygisk Next) is needed for this feature to work.

19
module/src/main/cpp/zygisk/main.cpp
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@@ -20,6 +20,16 @@ public:
}
void preAppSpecialize(AppSpecializeArgs *args) override {
int enabled = 0;
api_->setOption(zygisk::DLCLOSE_MODULE_LIBRARY);
{
auto fd = api_->connectCompanion();
if (fd >= 0) {
read(fd, &enabled, sizeof(enabled));
close(fd);
}
}
if (!enabled) return;
const char *process = env_->GetStringUTFChars(args->nice_name, nullptr);
if (process == "com.google.android.gms.unstable"sv) {
LOGI("spoofing build vars in %s!", process);
@@ -45,7 +55,6 @@ public:
SET_FIELD(buildClass, "TAGS", "release-keys");
}
env_->ReleaseStringUTFChars(args->nice_name, process);
api_->setOption(zygisk::DLCLOSE_MODULE_LIBRARY);
}
void preServerSpecialize(ServerSpecializeArgs *args) override {
@@ -57,6 +66,12 @@ private:
JNIEnv *env_;
};
static void companion_handler(int fd) {
int enabled = access("/data/adb/modules/tricky_store/spoof_build_vars", F_OK) == 0;
write(fd, &enabled, sizeof(enabled));
}
// Register our module class and the companion handler function
REGISTER_ZYGISK_MODULE(TrickyStore)
// REGISTER_ZYGISK_COMPANION(companion_handler)
REGISTER_ZYGISK_COMPANION(companion_handler)