Smali Structure

 Smali Syntax – Types

.method private doSomething()V

• V void

• Z boolean

• B byte

• S short

• C char

• F float

• I int

• J long

• D double

• [ array

Smali Syntax – Classes

Lcom/example/myapp/MyClass;

• full name space slash separated

• prefixed with L

• suffixed with ;

StringBuilder sb = new StringBuilder(“str”)

---->

new-instance v1, Ljava/lang/StringBuilder;
const-string v2,“str"

invoke-direct {v1, v2}, Ljava/lang/StringBuilder;-><init>(Ljava/lang/String;)V

Smali Syntax – Methods

method private delayedAnimationFrame(J)Z
    .registers 8
    .parameter "currentTime”

• private : keyword

• delayedAnimationFrame: method name

• (J) Z: parameters/return

Smali Syntax – Registers

• .locals : # registers of a method without parameters

• #parameters -> # input parameters + (p0: this reference)

v0 - local 0 p0 - parameter 0 (this) p1 - parameter 1

Smali Syntax – Opcodes

Smali Syntax – Opcodes

• invoke-super vx, vy, …

• new-instance vx

• invoke-direct vx, vy, …

• const-string vx

• invoke-virtual vx, vy, …

• return-void

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