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feat(native): armv7 unarycall sig

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This commit is contained in:
rhunk
2023-08-29 00:41:50 +02:00
parent a5ed05e415
commit 5bf0ee294e
2 changed files with 17 additions and 8 deletions
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21
native/jni/src/library.cpp
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@@ -8,6 +8,13 @@
#include "util.h"
#include "grpc.h"
#ifdef __aarch64__
#define ARM64 true
#else
#define ARM64 false
#endif
static native_config_t *native_config;
static JavaVM *java_vm;
@@ -113,9 +120,9 @@ void JNICALL init(JNIEnv *env, jobject clazz, jobject classloader) {
// native lib object
native_lib_object = env->NewGlobalRef(clazz);
native_lib_on_unary_call_method = env->GetMethodID(
env->GetObjectClass(clazz),
"onNativeUnaryCall",
"(Ljava/lang/String;[B)L" BUILD_NAMESPACE "/NativeRequestData;"
env->GetObjectClass(clazz),
"onNativeUnaryCall",
"(Ljava/lang/String;[B)L" BUILD_NAMESPACE "/NativeRequestData;"
);
// load libclient.so
@@ -132,9 +139,11 @@ void JNICALL init(JNIEnv *env, jobject clazz, jobject classloader) {
DobbyHook((void *) DobbySymbolResolver("libc.so", "fstat"), (void *) fstat_hook,
(void **) &fstat_original);
//signature might change in the future (unstable for now)
auto unaryCall_func = util::find_signature(client_module.base, client_module.size,
"FD 7B BA A9 FC 6F 01 A9 FA 67 02 A9 F8 5F 03 A9 F6 57 04 A9 F4 4F 05 A9 FD 03 00 91 FF 43 13 D1");
auto unaryCall_func = util::find_signature(
client_module.base, client_module.size,
ARM64 ? "A8 03 1F F8 C2 00 00 94" : "0A 90 00 F0 3F F9",
ARM64 ? -0x48 : -0x38
);
if (unaryCall_func != 0) {
DobbyHook((void *) unaryCall_func, (void *) unaryCall_hook, (void **) &unaryCall_original);
} else {

4
native/jni/src/util.h
View File

@@ -68,7 +68,7 @@ namespace util {
env->CallVoidMethod(runtime, loadLibraryMethod, classLoader, env->NewStringUTF(libName));
}
uintptr_t find_signature(uintptr_t module_base, uintptr_t size, const std::string &pattern) {
uintptr_t find_signature(uintptr_t module_base, uintptr_t size, const std::string &pattern, int offset = 0) {
std::vector<char> bytes;
std::vector<char> mask;
for (size_t i = 0; i < pattern.size(); i += 3) {
@@ -91,7 +91,7 @@ namespace util {
break;
}
if (found) {
return module_base + i;
return module_base + i + offset;
}
}
return 0;