安卓逆向 找不到base64EncodeChars?

linyg

我定位到了一款app的MyBase64的代码,里面的encode代码是这样的
private static final byte[] base64DecodeChars = null;
private static final char[] base64EncodeChars = null;
private MyBase64() {
    }
public static byte[] decode(java.lang.String r10) {
...省略
}
public static String encode(byte[] bArr) {
        StringBuffer stringBuffer = new StringBuffer();
        int length = bArr.length;
        int i = 0;
        while (true) {
            if (i >= length) {
                break;
            }
            int i2 = i + 1;
            byte b = bArr & 255;
            if (i2 == length) {
                stringBuffer.append(base64EncodeChars[b >>> 2]);
                stringBuffer.append(base64EncodeChars[(b & 3) << 4]);
                stringBuffer.append("==");
                break;
            }
            int i3 = i2 + 1;
            byte b2 = bArr[i2] & 255;
            if (i3 == length) {
                stringBuffer.append(base64EncodeChars[b >>> 2]);
                stringBuffer.append(base64EncodeChars[((b & 3) << 4) | ((b2 & 240) >>> 4)]);
                stringBuffer.append(base64EncodeChars[(b2 & ao.m) << 2]);
                stringBuffer.append("=");
                break;
            }
            int i4 = i3 + 1;
            byte b3 = bArr[i3] & 255;
            stringBuffer.append(base64EncodeChars[b >>> 2]);
            stringBuffer.append(base64EncodeChars[((b & 3) << 4) | ((b2 & 240) >>> 4)]);
            stringBuffer.append(base64EncodeChars[((b2 & ao.m) << 2) | ((b3 & 192) >>> 6)]);
            stringBuffer.append(base64EncodeChars[b3 & 63]);
            i = i4;
        }
        return stringBuffer.toString();
    }
我通过frida调用decode函数,输出base64EncodeChars,和base64DecodeChars分别是

{"_p":["<class: com.hh.DG11.utils.MyBase64>",1,{"className":"[C","name":"[C","type":"pointer","size":1,"defaultValue":"0x0"},"0xaec301a8","0xb48b9f41","0xb48b0605"]}

{"_p":["<class: com.hh.DG11.utils.MyBase64>",1,{"className":"[B","name":"[B","type":"pointer","size":1,"defaultValue":"0x0"},"0xaec30198","0xb48b9f41","0xb48b0605"]}

正常来说base64EncodeChars应该是数字字母的组合的字符串,怎样获取正确的base64EncodeChars呢

linyg

有人解答下吗

linyg

有没