Rating:
## Rev/sl4ydroid (55 solves)
Created by: `Sl4y3r_07`
> This challenge has got some Rizz !!
The app (on startup) displays this.
I opened the apk with jadx and had a look through the functions on `MainActivity` and noticed this particular portion.
```java
public void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(C0567R.layout.activity_main);
TextView textView = (TextView) findViewById(C0567R.C0570id.displayTextView);
this.displayTextView = textView;
textView.setVisibility(8);
TextView textView2 = (TextView) findViewById(C0567R.C0570id.textView);
this.textView = textView2;
textView2.setText(getResources().getString(C0567R.string.message));
kim(getResources().getString(C0567R.string.f116k1));
nim(getResources().getString(C0567R.string.f117n1));
damn(getResources().getString(C0567R.string.f115d1));
m105k2(getResources().getString(C0567R.string.k21));
}
```
The app shows some text normally, and we can see some texts visibility being edited and some text being shown.
I connect my phone and prepare an ADB bridge with jadx. Looking through the Smali I put a breakpoint at:
- line 225 (`invoke-virtual {v0, v1}, Landroid/widget/TextView;->setVisibility(I)V`)
- line 238 (`invoke-virtual {v0, v1}, Landroid/widget/TextView;->setText(Ljava/lang/CharSequence;)V`)
On the first breakpoint shows setting the visibility. We change this (`v1`) to `0` to make it visible.
On the second breakpoint we change this (`v1`) from `Flag will not display here.` to ` ` (a space), to make it invisible.
Continuing past the breakpoints were shown our flag: `flag{RizZZ! Rc4_R3v3r51Ngg_RrR!:}`.
**Files:** [slaydroid.zip](https://web.archive.org/web/20231218160004/https://staticbckdr.infoseciitr.in/slaydroid.zip)
