[GUIDE] Smali coding guide for beginners

[Rick1684]

To all of you here thanks. Ive learned so much from you. Getting that volume slider taking care of means alot. @remuntada78 I really appreciate all the help. Its nice to have someone take the time to help. THATS TO ALL OF YOU. Much Love.

 

[newbreedsoftware]

I'm trying to modify some smali code and I'm not exactly sure I'm doing it correctly. I am trying to bypass root detection on a game I want to play on my tablet. I found where the root detection process happens. My question is do I need to just change the const-string lines to if-nez v0, :cond_0 or do I need to edit the other files as well? Any ideas would be much appreciated, thank you. I have attached a screen shot of the smali source as well.

 

[RealWelder]

Need some help/information. I am trying to port the 4 way reboot mod to an LG phone, with no luck. I noticed that it seems like the LG phone uses a different method for createDialog. I think that is why this mod isn't working. I guess my question is does anyone know anything about GlobalActions$GlobalActionsCreateDialog instead of Landroid/app/AlertDialog$builder?

Sent from my KYOCERA-C6745 using Tapatalk

 

[rishi.shendkar]

Register p1 is larger than the maximum register v2 for this method

The original smali code:


# direct methods
.method public constructor <init>()V
.locals 2
.param p1, "subscription" # I

.prologue
.line 178
invoke-direct {p0}, Ljava/lang/Object;-><init>()V


The error:

out/framework/smali/android/telephony/PhoneStateListener.smali[46,1] Register p1 is larger than the maximum register v2 for this method
Exception in thread "main" brut.androlib.AndrolibException: Could not smali file: android/telephony/PhoneStateListener.smali
at brut.androlib.src.SmaliBuilder.buildFile(SmaliBuilder.java:67)
at brut.androlib.src.SmaliBuilder.build(SmaliBuilder.java:51)
at brut.androlib.src.SmaliBuilder.build(SmaliBuilder.java:38)
at brut.androlib.Androlib.buildSourcesSmali(Androlib.java:400)
at brut.androlib.Androlib.buildSources(Androlib.java:331)
at brut.androlib.Androlib.build(Androlib.java:287)
at brut.androlib.Androlib.build(Androlib.java:263)
at brut.apktool.Main.cmdBuild(Main.java:224)

why is this happening?

 

[djdarkknight96]

The original smali code:


# direct methods
.method public constructor <init>()V
.locals 2
.param p1, "subscription" # I

.prologue
.line 178
invoke-direct {p0}, Ljava/lang/Object;-><init>()V


The error:

out/framework/smali/android/telephony/PhoneStateListener.smali[46,1] Register p1 is larger than the maximum register v2 for this method
Exception in thread "main" brut.androlib.AndrolibException: Could not smali file: android/telephony/PhoneStateListener.smali
at brut.androlib.src.SmaliBuilder.buildFile(SmaliBuilder.java:67)
at brut.androlib.src.SmaliBuilder.build(SmaliBuilder.java:51)
at brut.androlib.src.SmaliBuilder.build(SmaliBuilder.java:38)
at brut.androlib.Androlib.buildSourcesSmali(Androlib.java:400)
at brut.androlib.Androlib.buildSources(Androlib.java:331)
at brut.androlib.Androlib.build(Androlib.java:287)
at brut.androlib.Androlib.build(Androlib.java:263)
at brut.apktool.Main.cmdBuild(Main.java:224)

why is this happening?

It's saying p1 is larger then v2 so look for v2 and see. Hard to help without the entire smali code.

Sent from my Nexus 6 using XDA Labs

---------- Post added at 03:13 AM ---------- Previous post was at 03:11 AM ----------

I'm trying to modify some smali code and I'm not exactly sure I'm doing it correctly. I am trying to bypass root detection on a game I want to play on my tablet. I found where the root detection process happens. My question is do I need to just change the const-string lines to if-nez v0, :cond_0 or do I need to edit the other files as well? Any ideas would be much appreciated, thank you. I have attached a screen shot of the smali source as well.

Try just deleting those lines, I mean the entire lines. I do that for Google apps so having a clear primary color doesn't crash.

Sent from my Nexus 6 using XDA Labs

 

[levone1]

BEGINNER'S GUIDE TO SMALI CODING OF SYSTEMUI​

​

Presenting to you a beginners guide to smali coding. This thread would focus specifically on SystemUI modding. Please keep questions related to other apks out of this thread.

Thanks for this. I am still pretty much in the dark, but a little bit lighter now...
I have a general question, hopefully not too ot - let me know if so - trying to set bg of a text edit view which there is no drawable or layout xml for. I found the smali file for it, and a handful of lines indicating setBackgroundColor, with value of (I)V. I think I understand that the V is for void, and I need to change what's in the parentheses to a color value, (0xffffff, or something). I've found several examples on xda and stack overflow with 'color' and 'parse color', etc, but everything I try gets a recompile error - 'no viable alternative'. I'm sensing that I need to add something else, but not quite sure, (maybe a 'const' or 'if' line...). Any help?
Thanks

 

[djdarkknight96]

Thanks for this. I am still pretty much in the dark, but a little bit lighter now...
I have a general question, hopefully not too ot - let me know if so - trying to set bg of a text edit view which there is no drawable or layout xml for. I found the smali file for it, and a handful of lines indicating setBackgroundColor, with value of (I)V. I think I understand that the V is for void, and I need to change what's in the parentheses to a color value, (0xffffff, or something). I've found several examples on xda and stack overflow with 'color' and 'parse color', etc, but everything I try gets a recompile error - 'no viable alternative'. I'm sensing that I need to add something else, but not quite sure, (maybe a 'const' or 'if' line...). Any help?
Thanks

On the set background color there's a variable like v0 look to see if there's a definition. If not add one yourself right above it using a smali color converter. Example const v0, -0x1000000 "black" but make the v# match the set bg v#. Trial and error search it. I usually use pink to trace stuff.

 

[levone1]

On the set background color there's a variable like v0 look to see if there's a definition. If not add one yourself right above it using a smali color converter. Example const v0, -0x1000000 "black" but make the v# match the set bg v#. Trial and error search it. I usually use pink to trace stuff.

Just wanted to let you know that you came through for me
A little trial and error, and I figured it out. Reply so I can give you another thanks.

 

[djdarkknight96]

Just wanted to let you know that you came through for me
A little trial and error, and I figured it out. Reply so I can give you another thanks.

Hahahaha awesome!

 

[solquest3]

Hello.
I don't know anything about smali, but I'd like to do a thing and I've been told I have to implement things at smali level.
I'd like to disable the status bar (preventing from expanding) when an app is on.
I've tried contacting that app developer, but I haven't got any reply (last update was in 2013).
I've found this post http://www.techjini.com/blog/block-n...nding-android/ where there's described how to add a transparent window for covering the status bar, so it can not get the touches, but the problem is that I have no idea on how I can add that to the app (even if I can edit apk file).
I've open the app with Virtous Ten Studios, so I can change things, but I don't know what to do.
I've added
android:name=”android.permission.SYSTEM_ALERT_WIND OW”/>
to AndroidManifest.xml, but then I have no idea on where to write the other code.
Opening the app I have these folders
- original
- res
- smali
Do you know where I should write that code? Or what I have to look for?
Thanks a lot!
Luigi.
Android 6.0.1
rooted

 

[bho500]

Premising that I am totally new to Android programming, so sorry if you don't understand what I'm saying?.
I have to change the expiration date of my app and I think I have already finded the code that would be this:

new-instance v2, Ljava/util/Date;
const-wide v0, 0x15fcd33f38fL.

Now the problem is that when I change the hex my app still tells me that it must be upgraded or that the date and time of my phone is wrong. What should I do?