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hook android get sys prop

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@ -22,6 +22,7 @@
<details> <details>
<summary>Android</summary> <summary>Android</summary>
* [`Get system property`](#system-property-get)
* [`Reveal manually registered native symbols`](#reveal-native-methods) * [`Reveal manually registered native symbols`](#reveal-native-methods)
* [`Enumerate loaded classes`](#enumerate-loaded-classes) * [`Enumerate loaded classes`](#enumerate-loaded-classes)
* [`Class description`](#class-description) * [`Class description`](#class-description)
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<br>[⬆ Back to top](#table-of-contents) <br>[⬆ Back to top](#table-of-contents)
#### system property get
```js
Interceptor.attach(Module.findExportByName(null, '__system_property_get'), {
onEnter: function (args) {
this._name = args[0].readCString();
this._value = args[1];
},
onLeave: function (retval) {
console.log(JSON.stringify({
result_length: retval,
name: this._name,
val: this._value.readCString()
}));
}
});
```
<details>
<summary>Output example</summary>
```sh
{"result_length":"0x0","name":"ro.kernel.android.tracing","val":""}
{"result_length":"0x0","name":"ro.config.hw_log","val":""}
{"result_length":"0x0","name":"ro.config.hw_module_log","val":""}
{"result_length":"0x1","name":"ro.debuggable","val":"0"}
{"result_length":"0x1","name":"persist.sys.huawei.debug.on","val":"0"}
{"result_length":"0x1","name":"ro.logsystem.usertype","val":"6"}
{"result_length":"0x6","name":"ro.board.platform","val":"hi6250"}
{"result_length":"0x4","name":"persist.sys.enable_iaware","val":"true"}
{"result_length":"0x1","name":"persist.sys.cpuset.enable","val":"1"}
{"result_length":"0x4","name":"persist.sys.cpuset.subswitch","val":"1272"}
{"result_length":"0x4","name":"persist.sys.boost.durationms","val":"1000"}
{"result_length":"0x4","name":"persist.sys.boost.isbigcore","val":"true"}
{"result_length":"0x7","name":"persist.sys.boost.freqmin.b","val":"1805000"}
{"result_length":"0x4","name":"persist.sys.boost.ipapower","val":"3500"}
{"result_length":"0x0","name":"persist.sys.boost.skipframe","val":""}
{"result_length":"0x0","name":"persist.sys.boost.byeachfling","val":""}
{"result_length":"0x1","name":"debug.force_rtl","val":"0"}
{"result_length":"0x0","name":"ro.hardware.gralloc","val":""}
{"result_length":"0x6","name":"ro.hardware","val":"hi6250"}
{"result_length":"0x0","name":"ro.kernel.qemu","val":""}
{"result_length":"0x0","name":"ro.config.hw_force_rotation","val":""}
{"result_length":"0x0","name":"persist.fb_auto_alloc","val":""}
{"result_length":"0x0","name":"ro.config.hw_lock_res_whitelist","val":""}
{"result_length":"0x3","name":"ro.sf.lcd_density","val":"480"}
{"result_length":"0x0","name":"persist.sys.dpi","val":""}
{"result_length":"0x0","name":"persist.sys.rog.width","val":""}
{"result_length":"0x4","name":"dalvik.vm.usejitprofiles","val":"true"}
{"result_length":"0x1","name":"debug.atrace.tags.enableflags","val":"0"}
{"result_length":"0x1","name":"ro.debuggable","val":"0"}
{"result_length":"0x1","name":"debug.force_rtl","val":"0"}
{"result_length":"0x0","name":"ro.config.hw_lock_res_whitelist","val":""}
....
```
</details>
<br>[⬆ Back to top](#table-of-contents)
#### Reveal native methods #### Reveal native methods
`registerNativeMethods` can be used as anti reversing technique to the native .so libraries, e.g. hiding the symbols as much as possible, obfuscating the exported symbols and eventually adding some protection over the JNI bridge. `registerNativeMethods` can be used as anti reversing technique to the native .so libraries, e.g. hiding the symbols as much as possible, obfuscating the exported symbols and eventually adding some protection over the JNI bridge.