diff --git a/backend/routers/index.ts b/backend/routers/index.ts
index 6bdd630..f53ca40 100644
--- a/backend/routers/index.ts
+++ b/backend/routers/index.ts
@@ -1,9 +1,72 @@
+import fs from 'fs-extra';
+import bb from 'express-busboy';
 import { Router } from 'express';
+import { nanoid } from 'nanoid';
 import { log } from '../log';
 import { UserConfig } from '../UserConfig';
+import { random } from '../generators';
+import { BusBoyFile, AssFile } from 'ass';
 
 const router = Router({ caseSensitive: true });
 
+//@ts-ignore // Required since bb.extends expects express.Application, not a Router (but it still works)
+bb.extend(router, {
+	upload: true,
+	restrictMultiple: true,
+	allowedPath: (url: string) => url === '/',
+	limits: {
+		fileSize: () => (UserConfig.ready ? UserConfig.config.maximumFileSize : 50) * 1000000 // MB
+	}
+});
+
+// Render or redirect
 router.get('/', (req, res) => UserConfig.ready ? res.render('index') : res.redirect('/setup'));
 
+// Upload flow
+router.post('/', async (req, res) => {
+
+	// Check user config
+	if (!UserConfig.ready) return res.status(500).type('text').send('Configuration missing!');
+
+	// Does the file actually exist
+	if (!req.files || !req.files['file']) return res.status(400).type('text').send('No file was provided!');
+
+	// Type-check the file data
+	const bbFile: BusBoyFile = req.files['file'];
+
+	// Prepare file move
+	const uploads = UserConfig.config.uploadsDir;
+	const timestamp = Date.now().toString();
+	const destination = `${uploads}${uploads.endsWith('/') ? '' : '/'}${timestamp}_${bbFile.filename}`;
+	// todo: S3
+
+	try {
+
+		// Move the file
+		await fs.move(bbFile.file, destination);
+
+		// Build ass metadata
+		const assFile: AssFile = {
+			fakeid: random({ length: UserConfig.config.idSize }), // todo: more generators
+			id: nanoid(32),
+			mimetype: bbFile.mimetype,
+			filename: bbFile.filename,
+			timestamp,
+			uploader: '0', // todo: users
+			save: { local: destination },
+			sha256: '0' // todo: hashing
+		};
+
+		log.debug('File saved to', assFile.save.local!);
+
+		// todo: save metadata
+
+		return res.type('json').send({ resource: `${req.ass.host}/${assFile.fakeid}` });
+	} catch (err) {
+		log.error('Failed to upload file', bbFile.filename);
+		console.error(err);
+		return res.status(500).send(err);
+	}
+});
+
 export { router };