初识Cobalt Strike

简介

 

Cobalt Strike 一款以metasploit为基础的GUI的框架式渗透工具,集成了端口转发、服务扫描,自动化溢出,多模式端口监听,win exe木马生成,win dll木马生成,java木马生成,office宏病毒生成,木马捆绑;钓鱼攻击包括:站点克隆,目标信息获取,java执行,浏览器自动攻击等等。而Cobalt Strike 3.0已经不再使用Metasploit框架而作为一个独立的平台使用,当然可以结合Armitage进行使用。

 

Cobalt Strike 3.0 延用了其强大的团体服务器功能,能让多个攻击者同时连接到团体服务器上,共享攻击资源与目标信息和sessions。当然,在使用Cobalt Strike之前,需要安装java环境

配置

安装java环境,最好配置1.8

附上流程

下载连接

 

解压缩文件并移动至/opt

tar -xzvf jdk-8u91-linux-x64.tar.gz

mv jdk1.8.0_91 /opt

cd /opt/jdk1.8.0_91 

设置环境变量

 

执行 gedit ~/.bashrc , 并添加下列内容

# install JAVA JDK
export JAVA_HOME=/opt/jdk1.8.0_91
export CLASSPATH=.:${JAVA_HOME}/lib
export PATH=${JAVA_HOME}/bin:$PATH
保存退出
执行 source ~/.bashrc   

安装并注册

update-alternatives --install /usr/bin/java java /opt/jdk1.8.0_91/bin/java 1
update-alternatives --install /usr/bin/javac javac /opt/jdk1.8.0_91/bin/javac 1
update-alternatives --set java /opt/jdk1.8.0_91/bin/java
update-alternatives --set javac /opt/jdk1.8.0_91/bin/javac    

 

查看结果

update-alternatives --config java
update-alternatives --config javac
java -version

 

服务端

配置服务端ip和认证密码

 

chmod+x teamserver
./teamserver ip password  

 

客户端

java -XX:+AggressiveHeap -XX:+UseParallelGC -jar cobaltstrike.jar $*

 

 

Listeners

使用Cobalt Strike首先需要创建一个Listener,依次点击 Cobalt Strike->Listeners ,然后点击Add便可以创建自己想要的Listeners了,Cobalt Strike3.0包括

  • windows/beacon_dns/reverse_dns_txt
  • windows/beacon_dns/reverse_http
  • windows/beacon_http/reverse_http
  • windows/beacon_https/reverse_https
  • windows/beacon_smb/bind_pipe
  • windows/foreign/reverse_dns_txt
  • windows/foreign/reverse_http
  • windows/foreign/reverse_https
  • windows/foreign/reverse_tcp

其中windows/beacon 是Cobalt Strike自带的模块,包括dns,http,https,smb四种方式的监听器,windows/foreign 为外部监听器,即msf或者Armitage的监听器。
选择监听器以后,host会自动填写我们开启服务时的ip,配置监听端口,然后保存,监听器就创建好了。

Attacks

创建好监听器,下面就需要配置客户端了,Cobalt Strike包括多种攻击方式,其中Packages包括如下几种:

1446790551103.png

HTML Application 生成恶意的HTA木马文件;
MS Office Macro 生成office宏病毒文件;
Payload Generator 生成各种语言版本的payload;
USB/CD AutoPlay 生成利用自动播放运行的木马文件;
Windows Dropper 捆绑器,能够对文档类进行捆绑;
Windows Executable 生成可执行exe木马;
Windows Executable(S)生成无状态的可执行exe木马。

Web Drive-by(钓鱼攻击)包括如下几个模块:

1446793155190.png

Manage对开启的web服务进行管理;
Clone Site 克隆网站,可以记录受害者提交的数据;
Host File 提供一个文件下载,可以修改Mime信息;
PowerShell Web Delivery类似于msf 的web_delivery ;
Signed Applet Attack 使用java自签名的程序进行钓鱼攻击;
Smart Applet Attack 自动检测java版本并进行攻击,针对Java 1.6.0_45以下以及Java 1.7.0_21以下版本;
System Profiler用来获取一些系统信息,比如系统版本,Flash版本,浏览器版本等。

Spear Phish 是用来邮件钓鱼的模块。

 

View

View模块可以方便测试者查看各个模块,图形化的界面可以方便的看到受害者机器的各个信息。

Applications显示受害者机器的应用信息;
Credentials显示受害者机器的凭证信息,能更方便的进行后续渗透;
Downloads 文件下载;
Event Log可以看到事件日志,清楚的看到系统的事件,并且团队可以在这里聊天;
Keystrokes查看键盘记录;
Proxy Pivots查看代理信息;
Screenshots查看屏幕截图;
Script Console在这里可以加载各种脚本以增强功能,脚本地址戳我;
Targets查看目标;
Web Log查看web日志。

还有Reporting的功能就不介绍了,主要就是出报告用的。

Beacon

Beacon可以选择通过DNS还是HTTP协议出口网络,你甚至可以在使用Beacon通讯过程中切换HTTP和DNS。其支持多主机连接,部署好Beacon后提交一个要连回的域名或主机的列表,Beacon将通过这些主机轮询。目标网络的防护团队必须拦截所有的列表中的主机才可中断和其网络的通讯。

通过种种方式获取shell以后(比如直接运行生成的exe),就可以使用beacon了,右击电脑,Interact,则可打开Beacon Console;

1446798806278.png

在beacon处输入help,则可以看到详细说明:

beacon> help

Beacon Commands
===============

    Command                   Description
    -------                   -----------
    browserpivot              Setup a browser pivot session 
    bypassuac                 Spawn a session in a high integrity process
    cancel                    Cancel a download that's in-progress
    cd                        Change directory
    checkin                   Call home and post data
    clear                     Clear beacon queue
    covertvpn                 Deploy Covert VPN client
    desktop                   View and interact with target's desktop
    dllinject                 Inject a Reflective DLL into a process
    download                  Download a file
    downloads                 Lists file downloads in progress
    drives                    List drives on target
    elevate                   Try to elevate privileges
    execute                   Execute a program on target
    exit                      Terminate the beacon session
    getsystem                 Attempt to get SYSTEM
    getuid                    Get User ID
    hashdump                  Dump password hashes
    help                      Help menu
    inject                    Spawn a session in a specific process
    jobkill                   Kill a long-running post-exploitation task
    jobs                      List long-running post-exploitation tasks
    kerberos_ccache_use       Apply kerberos ticket from cache to this session
    kerberos_ticket_purge     Purge kerberos tickets from this session
    kerberos_ticket_use       Apply kerberos ticket to this session
    keylogger                 Inject a keystroke logger into a process
    kill                      Kill a process
    link                      Connect to a Beacon peer over SMB
    logonpasswords            Dump credentials and hashes with mimikatz
    ls                        List files
    make_token                Create a token to pass credentials
    mimikatz                  Runs a mimikatz command
    mkdir                     Make a directory
    mode dns                  Use DNS A as data channel (DNS beacon only)
    mode dns-txt              Use DNS TXT as data channel (DNS beacon only)
    mode http                 Use HTTP as data channel
    mode smb                  Use SMB peer-to-peer communication
    net                       Network and host enumeration tool
    note                      Assign a note to this Beacon       
    portscan                  Scan a network for open services
    powershell                Execute a command via powershell
    powershell-import         Import a powershell script
    ps                        Show process list
    psexec                    Use a service to spawn a session on a host
    psexec_psh                Use PowerShell to spawn a session on a host
    pth                       Pass-the-hash using Mimikatz
    pwd                       Print current directory
    rev2self                  Revert to original token
    rm                        Remove a file or folder
    rportfwd                  Setup a reverse port forward
    runas                     Execute a program as another user
    screenshot                Take a screenshot
    shell                     Execute a command via cmd.exe
    sleep                     Set beacon sleep time
    socks                     Start SOCKS4a server to relay traffic
    socks stop                Stop SOCKS4a server
    spawn                     Spawn a session 
    spawnas                   Spawn a session as another user
    spawnto                   Set executable to spawn processes into
    steal_token               Steal access token from a process
    timestomp                 Apply timestamps from one file to another
    unlink                    Disconnect from parent Beacon
    upload                    Upload a file
    wdigest                   Dump plaintext credentials with mimikatz
    winrm                     Use WinRM to spawn a session on a host
    wmi                       Use WMI to spawn a session on a host 

对于某个模块的使用方式可以直接使用help查看,如

beacon> help browserpivot
Use: browserpivot [pid] [x86|x64]
     browserpivot [stop]

Setup a Browser Pivot into the specified process. To hijack authenticated
web sessions, make sure the process is an Internet Explorer tab. These
processes have iexplore.exe as their parent process.

Use "browserpivot stop" to tear down the browser pivoting sessions 
associated with this Beacon. 

下面主要介绍几个好玩儿的功能。这里为了能快速显示结果,可以设置

beacon>sleep 0 

Browserpivot

用户注入受害者浏览器进程,然后开启HTTP代理,之后就可以登录受害者登录的网站了。

使用方式,ps找到浏览器进程:

注入进程:

beacon> browserpivot 3452 x64 

置本地浏览器代理:

1446811901549.png

当受害者登录某网站账号以后,通过代理,本机浏览器同样登录该网站:

1446811058903.png

当然当被攻击者关闭浏览器的时候,代理也就失效了,关闭此代理可使用如下命令:  

browserpivot stop

 

 

 

可以通过代理可以直接连接msf是真的很强。

 

学习链接:

https://evi1cg.me/archives/Cobalt_strike.html

https://xz.aliyun.com/t/3975

https://www.cnblogs.com/haq5201314/p/7040832.html

https://github.com/rsmudge/ElevateKit

https://www.cnblogs.com/-qing-/p/11517769.html#autoid-0-2-4

https://www.freebuf.com/column/149236.html

https://klionsec.github.io/2017/09/23/cobalt-strike/

 

 

tar -xzvf jdk-8u91-linux-x64.tar.gz

mv jdk1.8.0_91 /opt

cd /opt/jdk1.8.0_91

posted @ 2019-11-14 21:36  yunying  阅读(885)  评论(0编辑  收藏  举报