def call_native(self, addr, *argv):
# Detect JNI call
is_jni = False
if len(argv) >= 1:
is_jni = argv[0] == self.java_vm.address_ptr or argv[
0] == self.java_vm.jni_env.address_ptr
# TODO: Write JNI args to local ref table if jni.
try:
# Execute native call.
native_write_args(self, *argv)
stop_pos = randint(HOOK_MEMORY_BASE,
HOOK_MEMORY_BASE + HOOK_MEMORY_SIZE) | 1
self.mu.reg_write(UC_ARM_REG_LR, stop_pos)
self.mu.emu_start(addr, stop_pos - 1)
# Read result from locals if jni.
if is_jni:
result_idx = self.mu.reg_read(UC_ARM_REG_R0)
result = self.java_vm.jni_env.get_local_reference(result_idx)
if result is None:
return result
return result.value
finally:
# Clear locals if jni.
if is_jni:
self.java_vm.jni_env.clear_locals()
def call_native_to_addrend(self, addr_start, addr_end, *argv):
# Detect JNI call
is_jni = False
if len(argv) >= 1:
is_jni = argv[0] == self.java_vm.address_ptr or argv[
0] == self.java_vm.jni_env.address_ptr
try:
# Execute native call.
native_write_args(self, *argv)
stop_pos = randint(HOOK_MEMORY_BASE,
HOOK_MEMORY_BASE + HOOK_MEMORY_SIZE) | 1
self.mu.reg_write(UC_ARM_REG_LR, stop_pos)
self.mu.emu_start(addr_start, addr_end - 1)
finally:
# Clear locals if jni.
if is_jni:
self.java_vm.jni_env.clear_locals()