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@NullDev
Last active April 14, 2018 16:13
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Decode Syrapt0r's "my final note.txt" file by bitshifting it. See: http://code17.wikia.com
"use strict";
let path = require("path");
let fs = require("fs");
////////////////////////////////
//----------------------------//
// Copyright (c) 2018 NullDev //
//----------------------------//
////////////////////////////////
let args = process.argv.slice(2);
if (args.length <= 0){
console.log("\nNo File!\n\Usage:\nnode decoder.js /path/to/file.txt\n");
process.exit(1);
}
let filePath = path.resolve(args[0]);
let byteArray = function(binpath){
let fileData = fs.readFileSync(binpath).toString("hex");
let result = [];
for (var i = 0; i < fileData.length; i += 2) result.push(fileData[i] + fileData[i + 1]);
return result;
}
let bytes = byteArray(filePath);
let encoded = [];
let stringArr = [];
for (var i = 0; i < bytes.length; i++){
let value = parseInt(bytes[i], 16) + 50;
encoded[i] = value % 256;
stringArr[i] = String.fromCharCode(encoded[i]);
}
let text = stringArr.join("");
fs.writeFileSync(path.join(__dirname, "output.txt"), text);
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