Discord Mass Ban from List

discord_mass-ban.js

// --- USAGE ---
// - Populate `IDS` list (make a JSON array of the IDs to ban)
let IDS = ['8165...', '8165...', '8165...', '8165...', '8165...'];
// - Populate SERVER_ID
let SERVER_ID = '1234567890';
// - Login to discord web client
// - Run script in F12 console (snippets, or just paste directly into Console)
// --- END USAGE---

// --- EXAMPLE OUTPUT ---
//    Starting to check 12 IDs
//    Checked 12 -  Banned 0 -  Already Banned 12 from list
// --- END EXAMPLE OUTPUT ---

// funny discord tries to hide localStorage...
window.localStorage = window.localStorage || getLocalStoragePropertyDescriptor().get.call(window);
let token = localStorage.getItem('token')?.split('"')[1];

doMassBan(IDS, token);

function doMassBan(ids = [], token = '') {
    let added = 0, checked = 0, iterator = ids?.[Symbol.iterator]();

    if (ids && ids.length && token && iterator) {
        new Promise(resolve => {
            console.info(`Starting to check ${ids.length} IDs`)
            itcheckBans().finally(() => resolve({ added, checked }));
        }).then(({ added, checked }) => console.info(`Checked ${checked} - `, `Banned ${added} - `, `Already Banned ${checked - added} from list`))
    } else {
        throw new Error('Token or id list error');
    }

    function doBan(id = '') {
        return fetch(`https://discord.com/api/v8/guilds/${SERVER_ID}/bans/${id}`, {
            'headers': {
                'authorization': token,
            },
            'method': 'PUT',
            'credentials': 'include'
        }).then(() => {
            added++;
            console.info(`ban added for ${id}`)
        });
    }

    function itcheckBans() {
        const next = iterator.next();

        return next.done ? Promise.resolve() : fetch(`https://discord.com/api/v8/guilds/${SERVER_ID}/bans/${next.value}`, {
            'headers': {
                'authorization': token,
                'cache-control': 'no-cache',
            },
            'method': 'GET',
            'credentials': 'include'
        }).then(resp => {
            checked++;
            if (!resp.ok) {
                if (resp.status === 404) return doBan(next.value);
                else console.debug(`Something weird happened on ${next.value} - got ${resp.status}`, resp);
            } else {
                return;
            }
        }).then(() => {
            return itcheckBans();
        })
    }
}

function getLocalStoragePropertyDescriptor() {
    const iframe = document.createElement('iframe');
    document.head.append(iframe);
    const pd = Object.getOwnPropertyDescriptor(iframe.contentWindow, 'localStorage');
    iframe.remove();
    return pd;
}