calebfenton / native-harness-target Goto Github PK

i try to create java vm on android 7.1 with this code.

void *librt_dso = dlopen("libart.so", RTLD_NOW);
void *libandroid_runtime_dso = dlopen("libandroid_runtime.so", RTLD_NOW);

the result of the operation was program directly abort. i try to find JNI_CreateJavaVM() use this code:

JNI_CreateJavaVM_t JNI_CreateJavaVM;
    JNI_CreateJavaVM = (JNI_CreateJavaVM_t) dlsym(RTLD_DEFAULT, "JNI_CreateJavaVM");
    if (!JNI_CreateJavaVM) {
        return -2;
    }

still returns null.

is there any other solution?

what i am doing Wrong?

Currently when trying to instantiate the Cryptor instance, the JNI call returns null when trying to find the correct class:

  printf(" [+] Finding Cryptor class\n");
  jclass cryptor_class;
  cryptor_class = (*env)->FindClass(env, "org.cf.nativeharness.Cryptor");
  if (cryptor_class == NULL) {
    printf(" [!] Couldn't find Cryptor on the class path\n");
    return -1;
  } else {
    printf(" [+] Found Cryptor class: %p\n", cryptor_class);
  }

Is this a new addition/mitigation added recently? Willing to help on a PR with some pointers in the right direction to look