How to read what is written here?

Question

Encryption

How can I read in human language what is written here?

00000000: 4865 6c6c 6f20 576f 726c 6421 20d0 9ad0  Hello World! ...
00000010: b0d0 ba20 d182 d0b2 d0be d0b8 20d0 b4d0  ... ........ ...
00000020: b5d0 bbd0 b03f 20d0 a7d1 82d0 be20 d0b4  .....? ...... ..
00000030: d0b5 d0bb d0b0 d0b5 d188 d18c 3f20 d09f  ............? ..
00000040: d0be d187 d0b5 d0bc d183 20d1 82d0 b0d0  .......... .....
00000050: ba3f 0a                                  .?.

And how is this done, what steps and steps should be taken to achieve this?

ps: I don't know the correct tag for this question, so I chose these.

Answer 1

In browser console:

let input = "4865 6c6c 6f20 576f 726c 6421 20d0 9ad0   b0d0 ba20 d182 d0b2 d0be d0b8 20d0 b4d0" +
            "b5d0 bbd0 b03f 20d0 a7d1 82d0 be20 d0b4   d0b5 d0bb d0b0 d0b5 d188 d18c 3f20 d09f" +
            "d0be d187 d0b5 d0bc d183 20d1 82d0 b0d0   ba3f 0a";
let utf8HexBytesStr = input.replaceAll(" ", "");                    // "48656c6c6f2..."
let utf8HexBytes = utf8HexBytesStr.match(/.{2}/g);                  // ["48", "65", "6c", "6c", ...]
let utf8Bytes = utf8HexBytes.map(hexByte => parseInt(hexByte, 16)); // [72, 101, 108, 108, ...]
let ui8a = new Uint8Array(utf8Bytes);
let blob = new Blob([ui8a]);
let text = await blob.text();
console.log(text);

"Hello World! Как твои дела? Что делаешь? Почему так?
"

Answer 2

It's just that your encoding does not support Russian characters.
Trite utf-8 include and

$ echo "4865 6c6c 6f20 576f 726c 6421 20d0 9ad0b0d0 ba20 d182 d0b2 d0be d0b8 20d0 b4d0b5d0 bbd0 b03f 20d0 a7d1 82d0 be20 d0b4d0b5 d0bb d0b0 d0b5 d188 d18c 3f20 d09fd0be d187 d0b5 d0bc d183 20d1 82d0 b0d0ba3f 0a"|tr -d " "| xxd -r -p
Hello World! Как твои дела? Что делаешь? Почему так?