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66 lines
3.9 KiB
Markdown
66 lines
3.9 KiB
Markdown
# 49 - Pentesting TACACS+
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{% hint style="success" %}
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Learn & practice AWS Hacking:<img src="/.gitbook/assets/arte.png" alt="" data-size="line">[**HackTricks Training AWS Red Team Expert (ARTE)**](https://training.hacktricks.xyz/courses/arte)<img src="/.gitbook/assets/arte.png" alt="" data-size="line">\
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Learn & practice GCP Hacking: <img src="/.gitbook/assets/grte.png" alt="" data-size="line">[**HackTricks Training GCP Red Team Expert (GRTE)**<img src="/.gitbook/assets/grte.png" alt="" data-size="line">](https://training.hacktricks.xyz/courses/grte)
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<details>
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<summary>Support HackTricks</summary>
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* Check the [**subscription plans**](https://github.com/sponsors/carlospolop)!
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* **Join the** 💬 [**Discord group**](https://discord.gg/hRep4RUj7f) or the [**telegram group**](https://t.me/peass) or **follow** us on **Twitter** 🐦 [**@hacktricks\_live**](https://twitter.com/hacktricks\_live)**.**
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* **Share hacking tricks by submitting PRs to the** [**HackTricks**](https://github.com/carlospolop/hacktricks) and [**HackTricks Cloud**](https://github.com/carlospolop/hacktricks-cloud) github repos.
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</details>
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{% endhint %}
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## 基本信息
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**终端访问控制器访问控制系统 (TACACS)** 协议用于集中验证试图访问路由器或网络接入服务器 (NAS) 的用户。其升级版本 **TACACS+** 将服务分为身份验证、授权和计费 (AAA)。
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```
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PORT STATE SERVICE
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49/tcp open tacacs
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```
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**默认端口：** 49
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## 拦截认证密钥
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如果客户端与 TACACS 服务器的通信被攻击者拦截，**加密的认证密钥可以被拦截**。攻击者可以尝试对密钥进行**本地暴力破解攻击，而不会在日志中被检测到**。如果成功破解密钥，攻击者将获得对网络设备的访问权限，并可以使用 Wireshark 等工具解密流量。
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### 执行中间人攻击
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**可以利用 ARP 欺骗攻击来执行中间人 (MitM) 攻击**。
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### 暴力破解密钥
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[Loki](https://c0decafe.de/svn/codename\_loki/trunk/) 可以用来暴力破解密钥：
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```
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sudo loki_gtk.py
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```
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如果密钥成功**暴力破解**（**通常是MD5加密格式**），**我们可以访问设备并解密TACACS加密的流量。**
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### 解密流量
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一旦密钥成功破解，下一步是**解密TACACS加密的流量**。如果提供密钥，Wireshark可以处理加密的TACACS流量。通过分析解密后的流量，可以获取诸如**使用的横幅和管理员用户的用户名**等信息。
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通过使用获得的凭据访问网络设备的控制面板，攻击者可以对网络施加控制。需要注意的是，这些行为仅限于教育目的，未经适当授权不得使用。
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## 参考文献
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* [https://medium.com/@in9uz/cisco-nightmare-pentesting-cisco-networks-like-a-devil-f4032eb437b9](https://medium.com/@in9uz/cisco-nightmare-pentesting-cisco-networks-like-a-devil-f4032eb437b9)
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{% hint style="success" %}
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Learn & practice AWS Hacking:<img src="/.gitbook/assets/arte.png" alt="" data-size="line">[**HackTricks Training AWS Red Team Expert (ARTE)**](https://training.hacktricks.xyz/courses/arte)<img src="/.gitbook/assets/arte.png" alt="" data-size="line">\
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Learn & practice GCP Hacking: <img src="/.gitbook/assets/grte.png" alt="" data-size="line">[**HackTricks Training GCP Red Team Expert (GRTE)**<img src="/.gitbook/assets/grte.png" alt="" data-size="line">](https://training.hacktricks.xyz/courses/grte)
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<details>
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<summary>Support HackTricks</summary>
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||
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* Check the [**subscription plans**](https://github.com/sponsors/carlospolop)!
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* **Join the** 💬 [**Discord group**](https://discord.gg/hRep4RUj7f) or the [**telegram group**](https://t.me/peass) or **follow** us on **Twitter** 🐦 [**@hacktricks\_live**](https://twitter.com/hacktricks\_live)**.**
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* **Share hacking tricks by submitting PRs to the** [**HackTricks**](https://github.com/carlospolop/hacktricks) and [**HackTricks Cloud**](https://github.com/carlospolop/hacktricks-cloud) github repos.
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</details>
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{% endhint %}
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