---
categories: Original
date: 2025-01-10T00:00:00Z
tags:
  - 信息技术
  - 小米
  - 路由器
slug: miwifi-ssh
title: 小米路由器开启 SSH
---

[xmir-patcher](https://github.com/openwrt-xiaomi/xmir-patcher)提供了非常易用的漏洞利用方法，可以在小米路由器上开启 SSH，也参考[SSH 密码生成的前端方案](https://github.com/ddawx123/miwifi_sshpwd_generator)。

小米路由器是一个基于修改版 OpenWrt 的嵌入式 Linux 设备。开启 SSH 后的一个应用是[ShellCrash](https://github.com/juewuy/ShellCrash)，由于性能原因，没有更好的应用了。

不要期待它一定会有可用的第三方固件，但如果一定想要的话，可以检查[immortalwrt](https://github.com/immortalwrt/immortalwrt)或其他开源固件，不推荐使用私有/付费的闭源固件。

如果它似乎被弄坏了，可以先试试 Reset，或者尝试刷入[原版 ROM](https://www.miwifi.com/miwifi_download.html)，或者送修。

<script>
    /*
     * A JavaScript implementation of the RSA Data Security, Inc. MD5 Message
     * Digest Algorithm, as defined in RFC 1321.
     * Version 2.1 Copyright (C) Paul Johnston 1999 - 2002.
     * Other contributors: Greg Holt, Andrew Kepert, Ydnar, Lostinet
     * Distributed under the BSD License
     * See http://pajhome.org.uk/crypt/md5 for more info.
     */

    /*
     * Configurable variables. You may need to tweak these to be compatible with
     * the server-side, but the defaults work in most cases.
     */
    var hexcase = 0; /* hex output format. 0 - lowercase; 1 - uppercase        */
    var b64pad =
        ""; /* base-64 pad character. "=" for strict RFC compliance   */
    var chrsz = 8; /* bits per input character. 8 - ASCII; 16 - Unicode      */

    /*
     * These are the functions you'll usually want to call
     * They take string arguments and return either hex or base-64 encoded strings
     */
    function hex_md5(s) {
        return binl2hex(core_md5(str2binl(s), s.length * chrsz));
    }
    function b64_md5(s) {
        return binl2b64(core_md5(str2binl(s), s.length * chrsz));
    }
    function str_md5(s) {
        return binl2str(core_md5(str2binl(s), s.length * chrsz));
    }
    function hex_hmac_md5(key, data) {
        return binl2hex(core_hmac_md5(key, data));
    }
    function b64_hmac_md5(key, data) {
        return binl2b64(core_hmac_md5(key, data));
    }
    function str_hmac_md5(key, data) {
        return binl2str(core_hmac_md5(key, data));
    }

    /*
     * Perform a simple self-test to see if the VM is working
     */
    function md5_vm_test() {
        return hex_md5("abc") == "900150983cd24fb0d6963f7d28e17f72";
    }

    /*
     * Calculate the MD5 of an array of little-endian words, and a bit length
     */
    function core_md5(x, len) {
        /* append padding */
        x[len >> 5] |= 0x80 << len % 32;
        x[(((len + 64) >>> 9) << 4) + 14] = len;

        var a = 1732584193;
        var b = -271733879;
        var c = -1732584194;
        var d = 271733878;

        for (var i = 0; i < x.length; i += 16) {
            var olda = a;
            var oldb = b;
            var oldc = c;
            var oldd = d;

            a = md5_ff(a, b, c, d, x[i + 0], 7, -680876936);
            d = md5_ff(d, a, b, c, x[i + 1], 12, -389564586);
            c = md5_ff(c, d, a, b, x[i + 2], 17, 606105819);
            b = md5_ff(b, c, d, a, x[i + 3], 22, -1044525330);
            a = md5_ff(a, b, c, d, x[i + 4], 7, -176418897);
            d = md5_ff(d, a, b, c, x[i + 5], 12, 1200080426);
            c = md5_ff(c, d, a, b, x[i + 6], 17, -1473231341);
            b = md5_ff(b, c, d, a, x[i + 7], 22, -45705983);
            a = md5_ff(a, b, c, d, x[i + 8], 7, 1770035416);
            d = md5_ff(d, a, b, c, x[i + 9], 12, -1958414417);
            c = md5_ff(c, d, a, b, x[i + 10], 17, -42063);
            b = md5_ff(b, c, d, a, x[i + 11], 22, -1990404162);
            a = md5_ff(a, b, c, d, x[i + 12], 7, 1804603682);
            d = md5_ff(d, a, b, c, x[i + 13], 12, -40341101);
            c = md5_ff(c, d, a, b, x[i + 14], 17, -1502002290);
            b = md5_ff(b, c, d, a, x[i + 15], 22, 1236535329);

            a = md5_gg(a, b, c, d, x[i + 1], 5, -165796510);
            d = md5_gg(d, a, b, c, x[i + 6], 9, -1069501632);
            c = md5_gg(c, d, a, b, x[i + 11], 14, 643717713);
            b = md5_gg(b, c, d, a, x[i + 0], 20, -373897302);
            a = md5_gg(a, b, c, d, x[i + 5], 5, -701558691);
            d = md5_gg(d, a, b, c, x[i + 10], 9, 38016083);
            c = md5_gg(c, d, a, b, x[i + 15], 14, -660478335);
            b = md5_gg(b, c, d, a, x[i + 4], 20, -405537848);
            a = md5_gg(a, b, c, d, x[i + 9], 5, 568446438);
            d = md5_gg(d, a, b, c, x[i + 14], 9, -1019803690);
            c = md5_gg(c, d, a, b, x[i + 3], 14, -187363961);
            b = md5_gg(b, c, d, a, x[i + 8], 20, 1163531501);
            a = md5_gg(a, b, c, d, x[i + 13], 5, -1444681467);
            d = md5_gg(d, a, b, c, x[i + 2], 9, -51403784);
            c = md5_gg(c, d, a, b, x[i + 7], 14, 1735328473);
            b = md5_gg(b, c, d, a, x[i + 12], 20, -1926607734);

            a = md5_hh(a, b, c, d, x[i + 5], 4, -378558);
            d = md5_hh(d, a, b, c, x[i + 8], 11, -2022574463);
            c = md5_hh(c, d, a, b, x[i + 11], 16, 1839030562);
            b = md5_hh(b, c, d, a, x[i + 14], 23, -35309556);
            a = md5_hh(a, b, c, d, x[i + 1], 4, -1530992060);
            d = md5_hh(d, a, b, c, x[i + 4], 11, 1272893353);
            c = md5_hh(c, d, a, b, x[i + 7], 16, -155497632);
            b = md5_hh(b, c, d, a, x[i + 10], 23, -1094730640);
            a = md5_hh(a, b, c, d, x[i + 13], 4, 681279174);
            d = md5_hh(d, a, b, c, x[i + 0], 11, -358537222);
            c = md5_hh(c, d, a, b, x[i + 3], 16, -722521979);
            b = md5_hh(b, c, d, a, x[i + 6], 23, 76029189);
            a = md5_hh(a, b, c, d, x[i + 9], 4, -640364487);
            d = md5_hh(d, a, b, c, x[i + 12], 11, -421815835);
            c = md5_hh(c, d, a, b, x[i + 15], 16, 530742520);
            b = md5_hh(b, c, d, a, x[i + 2], 23, -995338651);

            a = md5_ii(a, b, c, d, x[i + 0], 6, -198630844);
            d = md5_ii(d, a, b, c, x[i + 7], 10, 1126891415);
            c = md5_ii(c, d, a, b, x[i + 14], 15, -1416354905);
            b = md5_ii(b, c, d, a, x[i + 5], 21, -57434055);
            a = md5_ii(a, b, c, d, x[i + 12], 6, 1700485571);
            d = md5_ii(d, a, b, c, x[i + 3], 10, -1894986606);
            c = md5_ii(c, d, a, b, x[i + 10], 15, -1051523);
            b = md5_ii(b, c, d, a, x[i + 1], 21, -2054922799);
            a = md5_ii(a, b, c, d, x[i + 8], 6, 1873313359);
            d = md5_ii(d, a, b, c, x[i + 15], 10, -30611744);
            c = md5_ii(c, d, a, b, x[i + 6], 15, -1560198380);
            b = md5_ii(b, c, d, a, x[i + 13], 21, 1309151649);
            a = md5_ii(a, b, c, d, x[i + 4], 6, -145523070);
            d = md5_ii(d, a, b, c, x[i + 11], 10, -1120210379);
            c = md5_ii(c, d, a, b, x[i + 2], 15, 718787259);
            b = md5_ii(b, c, d, a, x[i + 9], 21, -343485551);

            a = safe_add(a, olda);
            b = safe_add(b, oldb);
            c = safe_add(c, oldc);
            d = safe_add(d, oldd);
        }
        return Array(a, b, c, d);
    }

    /*
     * These functions implement the four basic operations the algorithm uses.
     */
    function md5_cmn(q, a, b, x, s, t) {
        return safe_add(
            bit_rol(safe_add(safe_add(a, q), safe_add(x, t)), s),
            b
        );
    }
    function md5_ff(a, b, c, d, x, s, t) {
        return md5_cmn((b & c) | (~b & d), a, b, x, s, t);
    }
    function md5_gg(a, b, c, d, x, s, t) {
        return md5_cmn((b & d) | (c & ~d), a, b, x, s, t);
    }
    function md5_hh(a, b, c, d, x, s, t) {
        return md5_cmn(b ^ c ^ d, a, b, x, s, t);
    }
    function md5_ii(a, b, c, d, x, s, t) {
        return md5_cmn(c ^ (b | ~d), a, b, x, s, t);
    }

    /*
     * Calculate the HMAC-MD5, of a key and some data
     */
    function core_hmac_md5(key, data) {
        var bkey = str2binl(key);
        if (bkey.length > 16) bkey = core_md5(bkey, key.length * chrsz);

        var ipad = Array(16),
            opad = Array(16);
        for (var i = 0; i < 16; i++) {
            ipad[i] = bkey[i] ^ 0x36363636;
            opad[i] = bkey[i] ^ 0x5c5c5c5c;
        }

        var hash = core_md5(
            ipad.concat(str2binl(data)),
            512 + data.length * chrsz
        );
        return core_md5(opad.concat(hash), 512 + 128);
    }

    /*
     * Add integers, wrapping at 2^32. This uses 16-bit operations internally
     * to work around bugs in some JS interpreters.
     */
    function safe_add(x, y) {
        var lsw = (x & 0xffff) + (y & 0xffff);
        var msw = (x >> 16) + (y >> 16) + (lsw >> 16);
        return (msw << 16) | (lsw & 0xffff);
    }

    /*
     * Bitwise rotate a 32-bit number to the left.
     */
    function bit_rol(num, cnt) {
        return (num << cnt) | (num >>> (32 - cnt));
    }

    /*
     * Convert a string to an array of little-endian words
     * If chrsz is ASCII, characters >255 have their hi-byte silently ignored.
     */
    function str2binl(str) {
        var bin = Array();
        var mask = (1 << chrsz) - 1;
        for (var i = 0; i < str.length * chrsz; i += chrsz)
            bin[i >> 5] |= (str.charCodeAt(i / chrsz) & mask) << i % 32;
        return bin;
    }

    /*
     * Convert an array of little-endian words to a string
     */
    function binl2str(bin) {
        var str = "";
        var mask = (1 << chrsz) - 1;
        for (var i = 0; i < bin.length * 32; i += chrsz)
            str += String.fromCharCode((bin[i >> 5] >>> i % 32) & mask);
        return str;
    }

    /*
     * Convert an array of little-endian words to a hex string.
     */
    function binl2hex(binarray) {
        var hex_tab = hexcase ? "0123456789ABCDEF" : "0123456789abcdef";
        var str = "";
        for (var i = 0; i < binarray.length * 4; i++) {
            str +=
                hex_tab.charAt((binarray[i >> 2] >> ((i % 4) * 8 + 4)) & 0xf) +
                hex_tab.charAt((binarray[i >> 2] >> ((i % 4) * 8)) & 0xf);
        }
        return str;
    }

    /*
     * Convert an array of little-endian words to a base-64 string
     */
    function binl2b64(binarray) {
        var tab =
            "ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz0123456789+/";
        var str = "";
        for (var i = 0; i < binarray.length * 4; i += 3) {
            var triplet =
                (((binarray[i >> 2] >> (8 * (i % 4))) & 0xff) << 16) |
                (((binarray[(i + 1) >> 2] >> (8 * ((i + 1) % 4))) & 0xff) <<
                    8) |
                ((binarray[(i + 2) >> 2] >> (8 * ((i + 2) % 4))) & 0xff);
            for (var j = 0; j < 4; j++) {
                if (i * 8 + j * 6 > binarray.length * 32) str += b64pad;
                else str += tab.charAt((triplet >> (6 * (3 - j))) & 0x3f);
            }
        }
        return str;
    }
</script>

<p>
    SN:
    <input
        type="textbox"
        id="sn"
        oninput="calc()"
        placeholder="输入设备SN（包含/，大小写敏感）"
    />
</p>

<p>密码: <input type="textbox" id="PWD" readonly placeholder="自动计算结果" /></p>

<script>
    let r1d_salt = "A2E371B0-B34B-48A5-8C40-A7133F3B5D88";
    // Salt must be reversed for non-R1D devices
    let others_salt = "d44fb0960aa0-a5e6-4a30-250f-6d2df50a";
    others_salt = others_salt.split("-").reverse().join("-");
    function calc() {
        let sn = document.getElementById("sn").value;
        document.getElementById("PWD").value = hex_md5(
            sn + (sn.indexOf("/") > 0 ? others_salt : r1d_salt)
        ).substr(0, 8);
    }
</script>