解析Smali代码入门

解析Smali代码入门


# Java Code
#public class HelloWorld {

#   push static void main(String[] args){
#   System.out.println("Hello World!");
#   }

#}
#
# int       -> I
# String     -> Ljava/lang/String;

# smali Code
.class public LHelloWorld;
#相当于 public class HelloWorld


#这里告诉你如何反编译smali格式成dex格式,并运行它,会在控制台输出helloworld字符串。
#Ye olde hello world application
#To assemble and run this on a phone or emulator:
#
#java -jar smali.jar -o classes.dex HelloWorld.smali
#zip HelloWorld.zip classes.dex
#
#adb push HelloWorld.zip /data/local
#adb shell dalvikvm -cp /data/local/HelloWorld.zip HelloWorld
#
#if you get out of memory type errors when running smali.jar, try
#
#java -Xmx512m -jar smali.jar HelloWorld.smali
#instead

.super Ljava/lang/Object;
# 继承自父类 Object extends Object

.method public static main([Ljava/lang/String;)V
#方法 static void main();
#registers 说明了用到2个寄存器
   .registers 2
    # System.out
    # 用sget-object指令把System里面类型为PrintStream的out放到了v0
    sget-object v0, Ljava/lang/System;->out:Ljava/io/PrintStream;
# 字符串放到v1
    const-string v1, "Hello World!"
    #System.out.println("");
    # 把v1当成参数调用v0的void println(str)方法;
    invoke-virtual {v0, v1}, Ljava/io/PrintStream;->println(Ljava/lang/String;)V
# 返回
    return-void
.end method
posted @ 2019-09-28 14:22  ltyandy  阅读(1227)  评论(0编辑  收藏  举报