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apk反编译

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java -jar .tools/hack/apktool_2.6.0.jar d -r Desktop/base4.8.1.apk -o Desktop/outdir

java -jar .tools/hack/apktool_2.6.0.jar b Desktop/outdir

Library/Android/sdk/build-tools/25.0.3/apksigner sign --ks Desktop/song.keystore Desktop/base4.8.1.apk

签名生成

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keytool -genkey -alias song -keyalg RSA -keysize 1024 -keystore /Users/juneleo/Desktop/song.keystore -validity 365

smali

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# virtual methods
.method public main()V
    .registers 6

    .line 7
    invoke-static {}, Ljava/lang/System;->currentTimeMillis()J

    move-result-wide v0

    const-wide/16 v2, 0x3e8

    div-long/2addr v0, v2

    .line 8
    .local v0, "currentTime":J
    const-wide/32 v2, 0x1dfe200

    add-long/2addr v2, v0

    .line 9
    .local v2, "b":J
    sget-object v4, Ljava/lang/System;->out:Ljava/io/PrintStream;

    invoke-virtual {v4, v2, v3}, Ljava/io/PrintStream;->println(J)V

    .line 10
    return-void
.end method