nvwa_unpacker产物如何处理

[zhangjg0201]

使用nvwa_unpacker脱壳机脱壳后，文件后缀为.j， 看起来像是smali， 但也不是标准的smali， 请问这些文件怎么处理？ 能转成.java文件吗?

`
.version 50 0

.class public super com/xunmeng/pinduoduo/alive/unify/ability/dynamic/abilities/dataCollect/collectors/XmVoiceAssistantUsageCollector
.super java/lang/Object

.implements com/xunmeng/pinduoduo/alive/unify/ability/dynamic/abilities/dataCollect/ability/IDataCollector

.field public static TAG Ljava/lang/String;
.field public static CONFIG_KEY_COLLECTOR Ljava/lang/String;
.field public static AB_KEY_TRACK Ljava/lang/String;
.field public static KEY_LAST_FAILURE_COLLECT_TIME Ljava/lang/String;
.field public static KEY_LAST_SUCCESS_COLLECT_TIME Ljava/lang/String;
.field public static FILE_PATH Ljava/lang/String;
.field public collectRecordKV Lcom/xunmeng/pinduoduo/alive/strategy/interfaces/adapter/intf/IMMKV;
.method public : ()V
.code stack 3 locals 1

L_0: aload 0
L_1: ldc "LVUA.XmVoiceAssistantUsageCollector"
L_2: ldc 0
L_3: invokestatic Method com/xunmeng/pinduoduo/alive/strategy/interfaces/adapter/proxy/MMKVCompat module (Ljava/lang/String;Z)Lcom/xunmeng/pinduoduo/alive/strategy/interfaces/adapter/intf/IMMKV;
L_4: putfield Field com/xunmeng/pinduoduo/alive/unify/ability/dynamic/abilities/dataCollect/collectors/XmVoiceAssistantUsageCollector collectRecordKV Lcom/xunmeng/pinduoduo/alive/strategy/interfaces/adapter/intf/IMMKV;
L_5: return

.end code

.end method

`

[VinaChiong]

使用nvwa_unpacker脱壳机脱壳后，文件后缀为.j， 看起来像是smali， 但也不是标准的smali， 请问这些文件怎么处理？ 能转成.java文件吗?

` .version 50 0

.class public super com/xunmeng/pinduoduo/alive/unify/ability/dynamic/abilities/dataCollect/collectors/XmVoiceAssistantUsageCollector .super java/lang/Object

.implements com/xunmeng/pinduoduo/alive/unify/ability/dynamic/abilities/dataCollect/ability/IDataCollector

.field public static TAG Ljava/lang/String; .field public static CONFIG_KEY_COLLECTOR Ljava/lang/String; .field public static AB_KEY_TRACK Ljava/lang/String; .field public static KEY_LAST_FAILURE_COLLECT_TIME Ljava/lang/String; .field public static KEY_LAST_SUCCESS_COLLECT_TIME Ljava/lang/String; .field public static FILE_PATH Ljava/lang/String; .field public collectRecordKV Lcom/xunmeng/pinduoduo/alive/strategy/interfaces/adapter/intf/IMMKV; .method public : ()V .code stack 3 locals 1

L_0: aload 0 L_1: ldc "LVUA.XmVoiceAssistantUsageCollector" L_2: ldc 0 L_3: invokestatic Method com/xunmeng/pinduoduo/alive/strategy/interfaces/adapter/proxy/MMKVCompat module (Ljava/lang/String;Z)Lcom/xunmeng/pinduoduo/alive/strategy/interfaces/adapter/intf/IMMKV; L_4: putfield Field com/xunmeng/pinduoduo/alive/unify/ability/dynamic/abilities/dataCollect/collectors/XmVoiceAssistantUsageCollector collectRecordKV Lcom/xunmeng/pinduoduo/alive/strategy/interfaces/adapter/intf/IMMKV; L_5: return

.end code

.end method

`

@zhangjg0201
是不是 nvwa_unpack 的 run.py 没有100%执行成功？我踩了以下坑后，能disasm 出 class文件：

1.pwn包 缺失

我在Mac M1下，卡在 pwn包 install失败，包括pip3 install、brew install pwntools都不行。
采用 ubuntu的 multipass 跑 ubuntu实例，解决 pwn包安装问题。

2.krak2 not found

见 run.py#L72 依赖 krak2，是 Krakatau 的 v2，目前只能手动编译，见readme有步骤。

依然报错，原因未知；改用 v1版本：

• git clone Krakatau
• 'python3 /Krakatau/assemble.py' 替换 run.py#L72 的 ‘krak2 asm’
• 执行 run.py，解锁 class 文件

3.用jadx decompile