hacktricks/generic-methodologies-and-resources/basic-forensic-methodology/pcap-inspection/wireshark-tricks.md

# Wireshark tricks

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## Improve your Wireshark skills

### Tutorials

The following tutorials are amazing to learn some cool basic tricks:

* [https://unit42.paloaltonetworks.com/unit42-customizing-wireshark-changing-column-display/](https://unit42.paloaltonetworks.com/unit42-customizing-wireshark-changing-column-display/)
* [https://unit42.paloaltonetworks.com/using-wireshark-display-filter-expressions/](https://unit42.paloaltonetworks.com/using-wireshark-display-filter-expressions/)
* [https://unit42.paloaltonetworks.com/using-wireshark-identifying-hosts-and-users/](https://unit42.paloaltonetworks.com/using-wireshark-identifying-hosts-and-users/)
* [https://unit42.paloaltonetworks.com/using-wireshark-exporting-objects-from-a-pcap/](https://unit42.paloaltonetworks.com/using-wireshark-exporting-objects-from-a-pcap/)

### Analysed Information

**Expert Information**

Clicking on _**Analyze** --> **Expert Information**_ you will have an **overview** of what is happening in the packets **analyzed**:

![](<../../../.gitbook/assets/image (256).png>)

**Resolved Addresses**

Under _**Statistics --> Resolved Addresses**_ you can find several **information** that was "**resolved**" by wireshark like port/transport to protocol, MAC to the manufacturer, etc. It is interesting to know what is implicated in the communication.

![](<../../../.gitbook/assets/image (893).png>)

**Protocol Hierarchy**

Under _**Statistics --> Protocol Hierarchy**_ you can find the **protocols** **involved** in the communication and data about them.

![](<../../../.gitbook/assets/image (586).png>)

**Conversations**

Under _**Statistics --> Conversations**_ you can find a **summary of the conversations** in the communication and data about them.

![](<../../../.gitbook/assets/image (453).png>)

**Endpoints**

Under _**Statistics --> Endpoints**_ you can find a **summary of the endpoints** in the communication and data about each of them.

![](<../../../.gitbook/assets/image (896).png>)

**DNS info**

Under _**Statistics --> DNS**_ you can find statistics about the DNS request captured.

![](<../../../.gitbook/assets/image (1063).png>)

**I/O Graph**

Under _**Statistics --> I/O Graph**_ you can find a **graph of the communication.**

![](<../../../.gitbook/assets/image (992).png>)

### Filters

Here you can find wireshark filter depending on the protocol: [https://www.wireshark.org/docs/dfref/](https://www.wireshark.org/docs/dfref/)\
Other interesting filters:

* `(http.request or ssl.handshake.type == 1) and !(udp.port eq 1900)`
  * HTTP and initial HTTPS traffic
* `(http.request or ssl.handshake.type == 1 or tcp.flags eq 0x0002) and !(udp.port eq 1900)`
  * HTTP and initial HTTPS traffic + TCP SYN
* `(http.request or ssl.handshake.type == 1 or tcp.flags eq 0x0002 or dns) and !(udp.port eq 1900)`
  * HTTP and initial HTTPS traffic + TCP SYN + DNS requests

### Search

If you want to **search** for **content** inside the **packets** of the sessions press _CTRL+f_. You can add new layers to the main information bar (No., Time, Source, etc.) by pressing the right button and then the edit column.

### Free pcap labs

**Practice with the free challenges of:** [**https://www.malware-traffic-analysis.net/**](https://www.malware-traffic-analysis.net)

## Identifying Domains

You can add a column that shows the Host HTTP header:

![](<../../../.gitbook/assets/image (639).png>)

And a column that add the Server name from an initiating HTTPS connection (**ssl.handshake.type == 1**):

![](<../../../.gitbook/assets/image (408) (1).png>)

## Identifying local hostnames

### From DHCP

In current Wireshark instead of `bootp` you need to search for `DHCP`

![](<../../../.gitbook/assets/image (1013).png>)

### From NBNS

![](<../../../.gitbook/assets/image (1003).png>)

## Decrypting TLS

### Decrypting https traffic with server private key

_edit>preference>protocol>ssl>_

![](<../../../.gitbook/assets/image (1103).png>)

Press _Edit_ and add all the data of the server and the private key (_IP, Port, Protocol, Key file and password_)

### Decrypting https traffic with symmetric session keys

Both Firefox and Chrome have the capability to log TLS session keys, which can be used with Wireshark to decrypt TLS traffic. This allows for in-depth analysis of secure communications. More details on how to perform this decryption can be found in a guide at [Red Flag Security](https://redflagsecurity.net/2019/03/10/decrypting-tls-wireshark/).

To detect this search inside the environment for to variable `SSLKEYLOGFILE`

A file of shared keys will look like this:

![](<../../../.gitbook/assets/image (820).png>)

To import this in wireshark go to \_edit > preference > protocol > ssl > and import it in (Pre)-Master-Secret log filename:

![](<../../../.gitbook/assets/image (989).png>)

## ADB communication

Extract an APK from an ADB communication where the APK was sent:

```python
from scapy.all import *

pcap = rdpcap("final2.pcapng")

def rm_data(data):
    splitted = data.split(b"DATA")
    if len(splitted) == 1:
        return data
    else:
        return splitted[0]+splitted[1][4:]

all_bytes = b""
for pkt in pcap:
    if Raw in pkt:
        a = pkt[Raw]
        if b"WRTE" == bytes(a)[:4]:
            all_bytes += rm_data(bytes(a)[24:])
        else:
            all_bytes += rm_data(bytes(a))
print(all_bytes)

f = open('all_bytes.data', 'w+b')
f.write(all_bytes)
f.close()
```

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<details>

<summary>Support HackTricks</summary>

* Check the [**subscription plans**](https://github.com/sponsors/carlospolop)!
* **Join the** 💬 [**Discord group**](https://discord.gg/hRep4RUj7f) or the [**telegram group**](https://t.me/peass) or **follow** us on **Twitter** 🐦 [**@hacktricks\_live**](https://twitter.com/hacktricks\_live)**.**
* **Share hacking tricks by submitting PRs to the** [**HackTricks**](https://github.com/carlospolop/hacktricks) and [**HackTricks Cloud**](https://github.com/carlospolop/hacktricks-cloud) github repos.

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