> 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/insecure-direct-object-reference-idor-attack/idors-techniques-pentesting-web.md).

# IDOR-Techniken

> Um eine IDOR-Schwachstelle auszunutzen, kann ein Angreifer versuchen, **die Kennung eines Objekts zu ändern** in der URL zu ändern oder ein automatisiertes Tool zu verwenden, um verschiedene Werte zu testen. Wenn der Angreifer eine Kennung findet, die Zugriff auf eine Ressource ermöglicht, die nicht verfügbar sein sollte, wurde die IDOR-Schwachstelle erfolgreich ausgenutzt.

<figure><img src="/files/44f699b645be96526ff6efba28c2dbd43ebad7da" alt="" width="563"><figcaption></figcaption></figure>

<figure><img src="/files/2ea39c2560a81feb5c50096ebcdabb890c45ece9" alt="" width="563"><figcaption></figcaption></figure>

## IDOR:

* wir erstellen eine Datei, die wir **gibt die Kennung zurück** als Nummer 1062:

<figure><img src="/files/974d05801c5610c73d519f0685439310f0b89e7f" alt="" width="563"><figcaption></figcaption></figure>

<figure><img src="/files/d12b8ac880667b6425da1c80857379a1a2063ffa" alt="" width="563"><figcaption></figcaption></figure>

Wenn wir nach einer anderen Nummer filtern, zeigt das an, dass das Dokument **nicht existiert**:

<figure><img src="/files/156dd279ed6abb0f142728c874a6424cf9038dc2" alt="" width="563"><figcaption></figcaption></figure>

### Brute Force:

* wir starten einen Angriff mit **Brute Force** um die existierende Datei zu filtern:

```bash
wfuzz --hh=10703,1233 -c -t 200 -z range,1-1500 -d 'pdf_id=FUZZ' http://localhost:5000/download

```

<figure><img src="/files/acd4a5aad36bec9f720025d60ced1058a06d12e3" alt="" width="563"><figcaption></figcaption></figure>


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