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AeonLucid avatar AeonLucid commented on July 21, 2024

To be honest, I don't know yet. It started happening after #7 (comment).
You can try to change the load_library calls to include do_init=False to fix some of the issues (most important on the libc one).

It's something libc memory related.

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DanielAscher avatar DanielAscher commented on July 21, 2024

setting do_init=False actually worked... kinda, but the example of douyin still does not:

2019-08-24 08:15:19,239 WARNING     androidemu.java.java_class_def | Register native ('jni', '(II)V') failed on class XGorgen.
2019-08-24 08:15:19,239 WARNING     androidemu.java.java_class_def | Register native ('jns', '(ILjava/lang/String;)V') failed on class XGorgen.
2019-08-24 08:15:19,239 WARNING     androidemu.java.java_class_def | Register native ('rb', '(Landroid/content/Context;Ljava/lang/String;Ljava/lang/String;)[B') failed on class XGorgen.
2019-08-24 08:15:19,239 WARNING     androidemu.java.java_class_def | Register native ('e', '([B)[B') failed on class XGorgen.
2019-08-24 08:15:19,239 WARNING     androidemu.java.java_class_def | Register native ('d', '([B)[B') failed on class XGorgen.
2019-08-24 08:15:19,240 WARNING     androidemu.java.java_class_def | Register native ('ws', '(I)V') failed on class XGorgen.
2019-08-24 08:15:19,240   DEBUG     androidemu.java.java_class_def | Registered native function ('leviathan', '(I[B)[B') to XGorgen.leviathan
2019-08-24 08:15:19,243   DEBUG            androidemu.java.jni_env | JNIEnv->FindClass(com/ss/sys/secuni/b/c) was called
2019-08-24 08:15:19,244   DEBUG            androidemu.java.jni_env | JNIEnv->ExceptionCheck() was called
2019-08-24 08:15:19,244   DEBUG            androidemu.java.jni_env | JNIEnv->RegisterNatives(2, 0x000ffb88, 2) was called
2019-08-24 08:15:19,244   DEBUG     androidemu.java.java_class_def | Registered native function ('n1', '(Landroid/content/Context;Ljava/lang/String;)I') to secuni_b.n1
2019-08-24 08:15:19,245   DEBUG     androidemu.java.java_class_def | Registered native function ('n0', '(Landroid/content/Context;)[B') to secuni_b.n0
2019-08-24 08:15:19,245   DEBUG            androidemu.java.jni_env | JNIEnv->DeleteLocalRef(2) was called
Traceback (most recent call last):
  File "_ctypes/callbacks.c", line 232, in 'calling callback function'
  File "/home/daniel/.local/lib/python3.7/site-packages/unicorn/unicorn.py", line 438, in _hookcode_cb
    cb(self, address, size, data)
  File "/home/daniel/Downloads/AndroidNativeEmu-master/androidemu/hooker.py", line 97, in _hook
    hook_func(self._emu)
  File "/home/daniel/Downloads/AndroidNativeEmu-master/androidemu/java/helpers/native_method.py", line 110, in native_method_wrapper
    result = func(argv[0], mu, *native_args)
  File "/home/daniel/Downloads/AndroidNativeEmu-master/androidemu/java/jni_env.py", line 350, in find_class
    name = memory_helpers.read_utf8(mu, name_ptr)
  File "/home/daniel/Downloads/AndroidNativeEmu-master/androidemu/utils/memory_helpers.py", line 29, in read_utf8
    return buffer[:null_pos].decode("utf-8")
UnicodeDecodeError: 'utf-8' codec can't decode byte 0xc2 in position 38: invalid continuation byte
2019-08-24 08:15:19,252   DEBUG                samples.debug_utils | mem unmapped: pc: cbd0d456 access: 13 address: fffffff4 length: 4 value: 0
Traceback (most recent call last):
  File "example_douyin.py", line 156, in <module>
    print(''.join(['%02x' % b for b in result]))
TypeError: 'NoneType' object is not iterable

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DanielAscher avatar DanielAscher commented on July 21, 2024

@P4nda0s Same on your branch. any idea?

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DanielAscher avatar DanielAscher commented on July 21, 2024

@P4nda0s @AeonLucid

you guys have no idea either?
Also, are these outputs normal or is something not loading right:

2019-08-30 17:55:18,548   ERROR        androidemu.internal.modules | => Undefined external symbol: __cxa_finalize
2019-08-30 17:55:18,548   ERROR        androidemu.internal.modules | => Undefined external symbol: __cxa_atexit
2019-08-30 17:55:18,548   ERROR        androidemu.internal.modules | => Undefined external symbol: __register_atfork
2019-08-30 17:55:18,549   ERROR        androidemu.internal.modules | => Undefined external symbol: abort
2019-08-30 17:55:18,549   ERROR        androidemu.internal.modules | => Undefined external symbol: memcpy

2019-08-30 17:55:19,704 WARNING     androidemu.java.java_class_def | Register native ('jni', '(II)V') failed on class XGorgen.
2019-08-30 17:55:19,704 WARNING     androidemu.java.java_class_def | Register native ('jns', '(ILjava/lang/String;)V') failed on class XGorgen.
2019-08-30 17:55:19,704 WARNING     androidemu.java.java_class_def | Register native ('rb', '(Landroid/content/Context;Ljava/lang/String;Ljava/lang/String;)[B') failed on class XGorgen.
2019-08-30 17:55:19,704 WARNING     androidemu.java.java_class_def | Register native ('e', '([B)[B') failed on class XGorgen.
2019-08-30 17:55:19,704 WARNING     androidemu.java.java_class_def | Register native ('d', '([B)[B') failed on class XGorgen.
2019-08-30 17:55:19,704 WARNING     androidemu.java.java_class_def | Register native ('ws', '(I)V') failed on class XGorgen.

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AeonLucid avatar AeonLucid commented on July 21, 2024

Yes they are "normal".

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DanielAscher avatar DanielAscher commented on July 21, 2024

@AeonLucid @P4nda0s

I think i found something out, but i am not sure WHY this is even happening, or WHY this is even called.

In memory_helper.py the read_utf8 function seems to error out because of a invalid UTF-8 on .encode("UTF-8") so nothing is returned from there. if i change it to .encode("UTF-8", "ignore"), it then tries to find a class with that return value, and of course errors out again:

019-09-01 11:28:53,987   DEBUG            androidemu.java.jni_env | JNIEnv->FindClass(YUWII[T^HUS^YUWWUT[JJVU]oI_HsT\U:٫gAJ]JGJELx_YBELb+�{~XSDS^S\UaF@[\U	i~XSDS^S\UaF@[\U	XSDS^S\UaF@[\U	2ݼڙڦήڙڦιڙڦܹڙڦ-/>�+)!+-/Jlj
             �/'
mD㉈%vەݕ݁GETt 잇OM\nADM(]Gf4֢0	dxP+& }*1<3m]kzf>Nݟ) was called
Traceback (most recent call last):
  File "_ctypes/callbacks.c", line 232, in 'calling callback function'
  File "/usr/local/lib/python3.7/dist-packages/unicorn/unicorn.py", line 438, in _hookcode_cb
    cb(self, address, size, data)
  File "/home/daniel/Downloads/AndroidNativeEmu-master/androidemu/hooker.py", line 97, in _hook
    hook_func(self._emu)
  File "/home/daniel/Downloads/AndroidNativeEmu-master/androidemu/java/helpers/native_method.py", line 110, in native_method_wrapper
    result = func(argv[0], mu, *native_args)
  File "/home/daniel/Downloads/AndroidNativeEmu-master/androidemu/java/jni_env.py", line 360, in find_class
    raise RuntimeError('Could not find class \'%s\' for JNIEnv.' % name)
RuntimeError: Could not find class 'YUWII[T^HUS^YUWWUT[JJVU]oI_HsT\U:٫gAJ]JGJELx_YBELb+�{~XSDS^S\UaF@[\U	i~XSDS^S\UaF@[\U	XSDS^S\UaF@[\U	2ݼڙڦήڙڦιڙڦܹڙڦ-/>�+)!+-/Jlj
                                                                                                                                                                                �/'
mD㉈%vەݕ݁GETt 잇OM\nADM(]Gf4֢0	dxP+& }*1<3m]kzf>Nݟ' for JNIEnv.
2019-09-01 11:28:54,024   DEBUG                samples.debug_utils | mem unmapped: pc: cbd0d456 access: 13 address: fffffff4 length: 4 value: 0

what i do not get is WHY is it trying to find a class with that name though

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bwmaples avatar bwmaples commented on July 21, 2024

Yes they are "normal".

Are they "normal" ?

2019-09-05 14:42:57,131   DEBUG    androidemu.cpu.syscall_handlers | Executing syscall getpid() at 0xcbc1ab14
2019-09-05 14:42:57,131   DEBUG    androidemu.cpu.syscall_handlers | Executing syscall null1() at 0xcbbea10c
2019-09-05 14:42:57,132   DEBUG    androidemu.cpu.syscall_handlers | Executing syscall writev(00000002, 000ffb34, 00000002) at 0xcbc1afa0
2019-09-05 14:42:57,132   DEBUG    androidemu.cpu.syscall_handlers | Executing syscall socket(00000001, 00080802, 00000000) at 0xcbc1ae70
2019-09-05 14:42:57,133   DEBUG    androidemu.cpu.syscall_handlers | Executing syscall connect(00000000, 000ffa90, 0000006e) at 0xcbc1aa0c
00000000: 01 00 2F 64 65 76 2F 73  6F 63 6B 65 74 2F 6C 6F  ../dev/socket/lo
00000010: 67 64 77 00 00 00 00 00  00 00 00 00 00 00 00 00  gdw.............
00000020: 00 00 00 00 00 00 00 00  00 00 00 00 00 00 00 00  ................
00000030: 00 00 00 00 00 00 00 00  00 00 00 00 00 00 00 00  ................
00000040: 00 00 00 00 00 00 00 00  00 00 00 00 00 00 00 00  ................
00000050: 00 00 00 00 00 00 00 00  00 00 00 00 00 00 00 00  ................
00000060: 00 00 00 00 00 00 00 00  00 00 00 00 00 00        ..............
None
2019-09-05 14:42:57,141   ERROR    androidemu.cpu.syscall_handlers | An error occured during in 11b syscall hander, stopping emulation
getentropy failed
Traceback (most recent call last):
  File "_ctypes/callbacks.c", line 232, in 'calling callback function'
  File "C:\Users\tingxinluan\AppData\Local\Programs\Python\Python37\lib\site-packages\unicorn\unicorn.py", line 453, in _hook_intr_cb
    cb(self, intno, data)
  File "F:\code\AndroidNativeEmu-master_another\AndroidNativeEmu-master\androidemu\cpu\interrupt_handler.py", line 21, in _hook_interrupt
    self._handlers[intno](uc)
  File "F:\code\AndroidNativeEmu-master_another\AndroidNativeEmu-master\androidemu\cpu\syscall_handlers.py", line 37, in _handle_syscall
    result = handler.callback(mu, *args)
  File "F:\code\AndroidNativeEmu-master_another\AndroidNativeEmu-master\androidemu\cpu\syscall_hooks.py", line 150, in _connect
    raise NotImplementedError()
NotImplementedError
2019-09-05 14:42:57,151   DEBUG                androidemu.emulator | Calling Init function: cbc0278d
2019-09-05 14:42:57,154   DEBUG                androidemu.emulator | Calling Init function: cbc3f381
2019-09-05 14:42:57,155   DEBUG    androidemu.cpu.syscall_handlers | Executing syscall openat(ffffff9c, cbc42384, 00020000, 00000000) at 0xcbc1abe4
2019-09-05 14:42:57,158 WARNING         androidemu.vfs.file_system | File does not exist '/proc/sys/vm/overcommit_memory'
2019-09-05 14:42:57,162   DEBUG    androidemu.cpu.syscall_handlers | Executing syscall mmap2(00000000, 00080000, 00000003, 00000022, ffffffff, 00000000) at 0xcbc1abc4
2019-09-05 14:42:57,162   DEBUG    androidemu.cpu.syscall_handlers | Executing syscall madvise(02000000, 00080000, 0000000c) at 0xcbc1b78c
2019-09-05 14:42:57,163   DEBUG    androidemu.cpu.syscall_handlers | Executing syscall prctl(53564d41, 00000000, 02000000, 00080000, cbc42068) at 0xcbc1b97c
2019-09-05 14:42:57,166   DEBUG    androidemu.cpu.syscall_handlers | Executing syscall clock_gettime(00000006, 000fe95c) at 0xcbc1a9ec
2019-09-05 14:42:57,168   DEBUG    androidemu.cpu.syscall_handlers | Executing syscall openat(ffffff9c, cbbf31b4, 000a0000, 00000000) at 0xcbc1abe4
2019-09-05 14:42:57,171 WARNING         androidemu.vfs.file_system | File does not exist '/sys/devices/system/cpu/online'
2019-09-05 14:42:57,173   DEBUG    androidemu.cpu.syscall_handlers | Executing syscall mmap2(00000000, 00080000, 00000000, 00000022, ffffffff, 00000000) at 0xcbc1abc4
2019-09-05 14:42:57,174   DEBUG    androidemu.cpu.syscall_handlers | Executing syscall madvise(02080000, 00080000, 0000000c) at 0xcbc1b78c
2019-09-05 14:42:57,174   DEBUG    androidemu.cpu.syscall_handlers | Executing syscall prctl(53564d41, 00000000, 02080000, 00080000, cbc42068) at 0xcbc1b97c
2019-09-05 14:42:57,178   DEBUG    androidemu.cpu.syscall_handlers | Executing syscall mmap2(02080000, 00003000, 00000003, 00000032, ffffffff, 00000000) at 0xcbc1abc4
2019-09-05 14:42:57,179   DEBUG    androidemu.cpu.syscall_handlers | Executing syscall madvise(02100000, 00003000, 0000000c) at 0xcbc1b78c
2019-09-05 14:42:57,179   DEBUG    androidemu.cpu.syscall_handlers | Executing syscall munmap(02100000, 00003000) at 0xcbc1b8f4
2019-09-05 14:42:57,181   DEBUG    androidemu.cpu.syscall_handlers | Executing syscall mmap2(02080000, 00080000, 00000003, 00000032, ffffffff, 00000000) at 0xcbc1abc4
2019-09-05 14:42:57,181   DEBUG    androidemu.cpu.syscall_handlers | Executing syscall madvise(02100000, 00080000, 0000000c) at 0xcbc1b78c
2019-09-05 14:42:57,181   DEBUG    androidemu.cpu.syscall_handlers | Executing syscall munmap(02100000, 00080000) at 0xcbc1b8f4
2019-09-05 14:42:57,182   DEBUG    androidemu.cpu.syscall_handlers | Executing syscall mmap2(00000000, 00080000, 00000000, 00000022, ffffffff, 00000000) at 0xcbc1abc4
2019-09-05 14:42:57,183   DEBUG    androidemu.cpu.syscall_handlers | Executing syscall madvise(02100000, 00080000, 0000000c) at 0xcbc1b78c
2019-09-05 14:42:57,189   DEBUG    androidemu.cpu.syscall_handlers | Executing syscall prctl(53564d41, 00000000, 02100000, 00080000, cbc42068) at 0xcbc1b97c
2019-09-05 14:42:57,189   DEBUG    androidemu.cpu.syscall_handlers | Executing syscall mmap2(02100000, 00003000, 00000003, 00000032, ffffffff, 00000000) at 0xcbc1abc4
2019-09-05 14:42:57,190   DEBUG    androidemu.cpu.syscall_handlers | Executing syscall madvise(02180000, 00003000, 0000000c) at 0xcbc1b78c
2019-09-05 14:42:57,190   DEBUG    androidemu.cpu.syscall_handlers | Executing syscall munmap(02180000, 00003000) at 0xcbc1b8f4
Traceback (most recent call last):
  File "_ctypes/callbacks.c", line 232, in 'calling callback function'
  File "C:\Users\tingxinluan\AppData\Local\Programs\Python\Python37\lib\site-packages\unicorn\unicorn.py", line 453, in _hook_intr_cb
    cb(self, intno, data)
  File "F:\code\AndroidNativeEmu-master_another\AndroidNativeEmu-master\androidemu\cpu\interrupt_handler.py", line 21, in _hook_interrupt
    self._handlers[intno](uc)
  File "F:\code\AndroidNativeEmu-master_another\AndroidNativeEmu-master\androidemu\cpu\syscall_handlers.py", line 50, in _handle_syscall
    raise RuntimeError(error)
RuntimeError: Unhandled syscall 0x4 (4) at 0xcbc1c2ec, stopping emulation
2019-09-05 14:42:57,199   DEBUG        androidemu.internal.modules | Loading module 'samples/example_binaries/libstdc++.so'.
2019-09-05 14:42:57,200   DEBUG         androidemu.internal.memory | => Mapping memory page 0xcbc6c000 - 0xcbc70000, size 0x00004000, prot 5
2019-09-05 14:42:57,200   DEBUG         androidemu.internal.memory | => Mapping memory page 0xcbc70000 - 0xcbc72000, size 0x00002000, prot 3
2019-09-05 14:42:57,207   DEBUG                androidemu.emulator | Calling Init for: samples/example_binaries/libstdc++.so

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AeonLucid avatar AeonLucid commented on July 21, 2024

@bwmaples ur missing files, causing it to run into an unexpected syscall.

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MockyBang avatar MockyBang commented on July 21, 2024

@AeonLucid @P4nda0s

I think i found something out, but i am not sure WHY this is even happening, or WHY this is even called.

In memory_helper.py the read_utf8 function seems to error out because of a invalid UTF-8 on .encode("UTF-8") so nothing is returned from there. if i change it to .encode("UTF-8", "ignore"), it then tries to find a class with that return value, and of course errors out again:

019-09-01 11:28:53,987   DEBUG            androidemu.java.jni_env | JNIEnv->FindClass(YUWII[T^HUS^YUWWUT[JJVU]oI_HsT\U:٫gAJ]JGJELx_YBELb+�{~XSDS^S\UaF@[\U	i~XSDS^S\UaF@[\U	XSDS^S\UaF@[\U	2ݼڙڦήڙڦιڙڦܹڙڦ-/>�+)!+-/Jlj
             �/'
mD㉈%vەݕ݁GETt 잇OM\nADM(]Gf4֢0	dxP+& }*1<3m]kzf>Nݟ) was called
Traceback (most recent call last):
  File "_ctypes/callbacks.c", line 232, in 'calling callback function'
  File "/usr/local/lib/python3.7/dist-packages/unicorn/unicorn.py", line 438, in _hookcode_cb
    cb(self, address, size, data)
  File "/home/daniel/Downloads/AndroidNativeEmu-master/androidemu/hooker.py", line 97, in _hook
    hook_func(self._emu)
  File "/home/daniel/Downloads/AndroidNativeEmu-master/androidemu/java/helpers/native_method.py", line 110, in native_method_wrapper
    result = func(argv[0], mu, *native_args)
  File "/home/daniel/Downloads/AndroidNativeEmu-master/androidemu/java/jni_env.py", line 360, in find_class
    raise RuntimeError('Could not find class \'%s\' for JNIEnv.' % name)
RuntimeError: Could not find class 'YUWII[T^HUS^YUWWUT[JJVU]oI_HsT\U:٫gAJ]JGJELx_YBELb+�{~XSDS^S\UaF@[\U	i~XSDS^S\UaF@[\U	XSDS^S\UaF@[\U	2ݼڙڦήڙڦιڙڦܹڙڦ-/>�+)!+-/Jlj
                                                                                                                                                                                �/'
mD㉈%vەݕ݁GETt 잇OM\nADM(]Gf4֢0	dxP+& }*1<3m]kzf>Nݟ' for JNIEnv.
2019-09-01 11:28:54,024   DEBUG                samples.debug_utils | mem unmapped: pc: cbd0d456 access: 13 address: fffffff4 length: 4 value: 0

what i do not get is WHY is it trying to find a class with that name though

you can look what i have done in the commits of my fork. https://github.com/MockyBang/AndroidNativeEmu/commits/master
do_init=True is necessary. what cause the Invalid memory write (UC_ERR_WRITE_UNMAPPED) error is the getrandom syscall. I don't know why. but it actually resolve the problem and I get the correct result.

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AeonLucid avatar AeonLucid commented on July 21, 2024

@MockyBang Thanks, maybe the syscall 0x180 is something else?

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yusitek avatar yusitek commented on July 21, 2024

@MockyBang Thanks, maybe the syscall 0x180 is something else?

syscall 0x180 is getrandom (goldfish/arch/arm/include/uapi/asm/unistd.h)

def _getrandom(self, mu, buf,  buflen, flags):
        ret = buflen-1
        rand_bytes = urandom(ret)
        print('....random...' , rand_bytes, ret)
        mu.mem_write(buf, rand_bytes)
        return ret

That is OK
Maybe because memory out of bounds

yusitek@c4a57dd

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AeonLucid avatar AeonLucid commented on July 21, 2024

@yusitek why are you returning buflen - 1? Shouldn't it return the amount of random bytes written to buf?

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