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  • hookString

    console.log("加载脚本成功!");
    Java.perform(function x() {
        //定位StringBuilder,StringBuffer类
        const stringbuilder = Java.use("java.lang.StringBuilder");
        const stringbuffer = Java.use("java.lang.StringBuffer");
    
        //定位方法
        const toString = "toString";
    
    
        // 使用log类和Exception类产生堆栈
        var jAndroidLog = Java.use("android.util.Log");
        var jException = Java.use("java.lang.Exception");
    
        stringbuilder[toString].implementation = function(){
            //执行原逻辑
            const result = this[toString]();
            // 打印返回的字符串内容
            console.log(result);
    
            // 只有长度大于30时,才打印堆栈
            if (result.length > 15) {
                // 抛出异常。打印堆栈
                console.log(jAndroidLog.getStackTraceString(jException.$new()));
            }
    
            //return出去
            return result;
        };
    
        stringbuffer[toString].implementation = function() {
            //执行原逻辑
            const result = this[toString]();
            // 打印返回的字符串内容
            console.log(result);
            // 只有长度大于30时,才打印堆栈
            if (result.length > 30) {
                // 抛出异常。打印堆栈
                console.log(jAndroidLog.getStackTraceString(jException.$new()));
            }
            //return出去
            return result;
        }
    
    });
    
    
    
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  • 原文地址:https://www.cnblogs.com/c-x-a/p/14492071.html
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