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add classlinker offset for Android 8-10

This commit is contained in:
kotori0 2020-11-08 18:57:20 +08:00 committed by solohsu
parent 6b7671f84f
commit 9d0c5aaa68
1 changed files with 34 additions and 3 deletions
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37
edxp-core/src/main/cpp/main/include/art/runtime/class_linker.h
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@ -66,11 +66,42 @@ namespace art {
static void Setup(void *handle, HookFunType hook_func) { static void Setup(void *handle, HookFunType hook_func) {
LOGD("Classlinker hook setup, handle=%p", handle); LOGD("Classlinker hook setup, handle=%p", handle);
// TODO: Maybe not compatible with Android 10- // TODO: Maybe not compatible with Android 10-
int api_level = GetAndroidApiLevel();
size_t OFFSET_classlinker; // Get offset from art::Runtime::RunRootClinits() call in IDA
switch(api_level) {
case __ANDROID_API_O__:
case __ANDROID_API_O_MR1__:
#ifdef __LP64__ #ifdef __LP64__
size_t OFFSET_classlinker = 472 / 8; OFFSET_classlinker = 400 / 8;
#else #else
size_t OFFSET_classlinker = 276 / 4; OFFSET_classlinker = 240 / 4;
#endif #endif
break;
case __ANDROID_API_P__:
#ifdef __LP64__
OFFSET_classlinker = 528 / 8;
#else
OFFSET_classlinker = 336 / 4;
#endif
break;
case __ANDROID_API_Q__:
#ifdef __LP64__
OFFSET_classlinker = 480 / 8;
#else
OFFSET_classlinker = 280 / 4;
#endif
break;
default:
LOGE("No valid offset for art::Runtime::class_linker_ found. Using Android R.");
case __ANDROID_API_R__:
#ifdef __LP64__
OFFSET_classlinker = 472 / 8;
#else
OFFSET_classlinker = 276 / 4;
#endif
break;
}
// ClassLinker* GetClassLinker() but inlined // ClassLinker* GetClassLinker() but inlined
void* cl = reinterpret_cast<void*>( void* cl = reinterpret_cast<void*>(
reinterpret_cast<size_t*>(Runtime::Current()->Get()) + OFFSET_classlinker reinterpret_cast<size_t*>(Runtime::Current()->Get()) + OFFSET_classlinker
@ -88,7 +119,7 @@ namespace art {
// Sandhook will hook ShouldUseInterpreterEntrypoint, so we just skip // Sandhook will hook ShouldUseInterpreterEntrypoint, so we just skip
// edxp::Context::GetInstance()->GetVariant() will not work here, so we use smh dirty hack // edxp::Context::GetInstance()->GetVariant() will not work here, so we use smh dirty hack
if (GetAndroidApiLevel() >= __ANDROID_API_R__ && access(edxp::kLibSandHookNativePath.c_str(), F_OK) == -1) { if (api_level >= __ANDROID_API_R__ && access(edxp::kLibSandHookNativePath.c_str(), F_OK) == -1) {
LOGD("Not sandhook, installing _ZN3art11ClassLinker30ShouldUseInterpreterEntrypointEPNS_9ArtMethodEPKv"); LOGD("Not sandhook, installing _ZN3art11ClassLinker30ShouldUseInterpreterEntrypointEPNS_9ArtMethodEPKv");
HOOK_FUNC(ShouldUseInterpreterEntrypoint, HOOK_FUNC(ShouldUseInterpreterEntrypoint,
"_ZN3art11ClassLinker30ShouldUseInterpreterEntrypointEPNS_9ArtMethodEPKv"); "_ZN3art11ClassLinker30ShouldUseInterpreterEntrypointEPNS_9ArtMethodEPKv");