hacktricks/forensics/basic-forensic-methodology/pcap-inspection/dnscat-exfiltration.md

41 lines
2.5 KiB
Markdown
Raw Normal View History

2023-06-06 18:56:34 +00:00
Se você tiver um arquivo pcap com dados sendo **exfiltrados pelo DNSCat** (sem usar criptografia), é possível encontrar o conteúdo exfiltrado.
2022-05-01 16:32:23 +00:00
2023-06-06 18:56:34 +00:00
Você só precisa saber que os **primeiros 9 bytes** não são dados reais, mas estão relacionados à **comunicação C\&C**:
```python
from scapy.all import rdpcap, DNSQR, DNSRR
import struct
f = ""
last = ""
for p in rdpcap('ch21.pcap'):
if p.haslayer(DNSQR) and not p.haslayer(DNSRR):
qry = p[DNSQR].qname.replace(".jz-n-bs.local.","").strip().split(".")
qry = ''.join(_.decode('hex') for _ in qry)[9:]
if last != qry:
print(qry)
f += qry
last = qry
#print(f)
```
2023-06-06 18:56:34 +00:00
Para mais informações: [https://github.com/jrmdev/ctf-writeups/tree/master/bsidessf-2017/dnscap](https://github.com/jrmdev/ctf-writeups/tree/master/bsidessf-2017/dnscap)\
[https://github.com/iagox86/dnscat2/blob/master/doc/protocol.md](https://github.com/iagox86/dnscat2/blob/master/doc/protocol.md)
2022-04-28 16:01:33 +00:00
2022-05-01 16:32:23 +00:00
2022-04-28 16:01:33 +00:00
<details>
2023-04-25 18:35:28 +00:00
<summary><a href="https://cloud.hacktricks.xyz/pentesting-cloud/pentesting-cloud-methodology"><strong>☁️ HackTricks Cloud ☁️</strong></a> -<a href="https://twitter.com/hacktricks_live"><strong>🐦 Twitter 🐦</strong></a> - <a href="https://www.twitch.tv/hacktricks_live/schedule"><strong>🎙️ Twitch 🎙️</strong></a> - <a href="https://www.youtube.com/@hacktricks_LIVE"><strong>🎥 Youtube 🎥</strong></a></summary>
2022-04-28 16:01:33 +00:00
2023-06-06 18:56:34 +00:00
- Você trabalha em uma **empresa de segurança cibernética**? Você quer ver sua **empresa anunciada no HackTricks**? ou você quer ter acesso à **última versão do PEASS ou baixar o HackTricks em PDF**? Confira os [**PLANOS DE ASSINATURA**](https://github.com/sponsors/carlospolop)!
2022-04-28 16:01:33 +00:00
2023-06-06 18:56:34 +00:00
- Descubra [**A Família PEASS**](https://opensea.io/collection/the-peass-family), nossa coleção exclusiva de [**NFTs**](https://opensea.io/collection/the-peass-family)
2022-04-28 16:01:33 +00:00
2023-06-06 18:56:34 +00:00
- Adquira o [**swag oficial do PEASS & HackTricks**](https://peass.creator-spring.com)
2022-04-28 16:01:33 +00:00
2023-06-06 18:56:34 +00:00
- **Junte-se ao** [**💬**](https://emojipedia.org/speech-balloon/) [**grupo do Discord**](https://discord.gg/hRep4RUj7f) ou ao [**grupo do telegram**](https://t.me/peass) ou **siga-me** no **Twitter** [**🐦**](https://github.com/carlospolop/hacktricks/tree/7af18b62b3bdc423e11444677a6a73d4043511e9/\[https:/emojipedia.org/bird/README.md)[**@carlospolopm**](https://twitter.com/hacktricks_live)**.**
2022-04-28 16:01:33 +00:00
2023-06-06 18:56:34 +00:00
- **Compartilhe seus truques de hacking enviando PRs para o [repositório hacktricks](https://github.com/carlospolop/hacktricks) e [repositório hacktricks-cloud](https://github.com/carlospolop/hacktricks-cloud)**.
2022-04-28 16:01:33 +00:00
</details>