Unable to decompile Facebook with latest APKtool compiled from source

[Phone-Guru]

java version "1.8.0_341"
Java(TM) SE Runtime Environment (build 1.8.0_341-b10)
Java HotSpot(TM) 64-Bit Server VM (build 25.341-b10, mixed mode)
Exception in thread "main" brut.androlib.AndrolibException: Could not decode arsc file
	at brut.androlib.res.decoder.ARSCDecoder.decode(ARSCDecoder.java:56)
	at brut.androlib.res.AndrolibResources.getResPackagesFromApk(AndrolibResources.java:790)
	at brut.androlib.res.AndrolibResources.loadMainPkg(AndrolibResources.java:64)
	at brut.androlib.res.AndrolibResources.getResTable(AndrolibResources.java:56)
	at brut.androlib.Androlib.getResTable(Androlib.java:74)
	at brut.androlib.ApkDecoder.getResTable(ApkDecoder.java:247)
	at brut.androlib.ApkDecoder.decode(ApkDecoder.java:109)
	at brut.apktool.Main.cmdDecode(Main.java:175)
	at brut.apktool.Main.main(Main.java:79)
Caused by: java.io.IOException: Expected: 0x00000008, got: 0x0000000c
	at brut.util.ExtDataInput.skipCheckShort(ExtDataInput.java:53)
	at brut.androlib.res.decoder.ARSCDecoder.readValue(ARSCDecoder.java:387)
	at brut.androlib.res.decoder.ARSCDecoder.readEntryData(ARSCDecoder.java:312)
	at brut.androlib.res.decoder.ARSCDecoder.readTableType(ARSCDecoder.java:297)
	at brut.androlib.res.decoder.ARSCDecoder.readTableTypeSpec(ARSCDecoder.java:212)
	at brut.androlib.res.decoder.ARSCDecoder.readTablePackage(ARSCDecoder.java:133)
	at brut.androlib.res.decoder.ARSCDecoder.readTableHeader(ARSCDecoder.java:85)
	at brut.androlib.res.decoder.ARSCDecoder.decode(ARSCDecoder.java:51)
	... 8 more

[iBotPeaches]

Odd, why would think the size of the value is 12. I believe the spec is clearly 8.

https://github.com/aosp-mirror/platform_frameworks_base/blob/master/libs/androidfw/include/androidfw/ResourceTypes.h#L282

• unit16 - size
• unit8 - 0
• unit8 - type
• unit32 - data

[iBotPeaches]

➜  2893 aapt2 dump resources 2893.apk | grep -i '7F0B001A' -B 3 -A 3
      () (id)
    resource 0x7f0b0019 id/(name removed)
      () (id)
    resource 0x7f0b001a id/(name removed)
      () (id)
    resource 0x7f0b001b id/(name removed)
      () (id)
➜  2893

Nothing odd about the resource that reports as an odd size.

[ChillVibesMushroom]

I haven't tried decompiling apps like Facebook kinda just trying to get adding permissions to my msfv apk down because when I do add a permission it won't show on my permissions list on install and tbh it won't even connect back to my listener any links anyone can send I figured someone here would know

[Morsmalleo]

I know you can get around the Decompiling Problem with older FACEBOOK versions by editing some files for APKtool and declaring

RES_TYPE_NAME_STYLES = style 2 all the way up to style 5.

I know this because I've done this before, not sure if its an official way of doing it + im also not sure if it will work for later version of FACEBOOK but it worked for me when I tired it (this was around the time v2.5.0 released for Apktool), problem is I cant remember the name of the 2nd .java file that needs to be edited...

I know the first file to edit is called ResTypeSpec.java, I just cant remember what the 2nd .java file is called

Edit

The files I edited to get Apktool to decompile older Facebook APK's is

• ResTypeSpec.java
• ResValueFactory.java
  Not sure if editing these files will work for newer versions

[iBotPeaches]

Okay, doing some work here. The original issue opened is Facebook being Facebook and nothing looks like that has changed between 2.6.1 and 2.6.2.

The first comment by @Skylled was a real regression added during 2.6.2 so I've split that into #2945 as I believe resolved. So leaving this as just the Facebook item.

[iBotPeaches]

➜  2989 apktool d 2989.apk -f
Picked up _JAVA_OPTIONS: -Dawt.useSystemAAFontSettings=on -Dswing.aatext=true
I: Using Apktool 2.8.1-c744dd-SNAPSHOT on 2989.apk
I: Loading resource table...
W: Chunk header size (16), read (12). Exceeding bytes: 0x5353544B.
I: Decoding AndroidManifest.xml with resources...
I: Loading resource table from file: /home/ibotpeaches/.local/share/apktool/framework/1.apk
I: Regular manifest package...
I: Decoding file-resources...
I: Decoding values */* XMLs...
I: Baksmaling classes.dex...
I: Copying assets and libs...
I: Copying unknown files...
I: Copying original files...
I: Copying META-INF/services directory
➜  2989 

Original issue was resolved when added support for skipping remaining entries in a chunk. Which was same issue as this: #3036

So technically resolved in 2.8.0

[Phone-Guru]

File decompiles but is filled with APKTOOL_DUMMYVAL entries.

[iBotPeaches]

File decompiles but is filled with APKTOOL_DUMMYVAL entries.

When the original human name is stripped. What do you expect?