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pCraft

pCraft is a PCAP Crafter, which creates a PCAP from an AMI scenario.

When generating data for testing, it is rather hard to do for the following reasons:

  • Lack of consistency between clients and servers
  • Make sure no personal data leaks
  • Consistency across different services.
  • Keeping timing right
  • etc.

This program helps solving this problem, one simply creates a script in AMI and the program outputs a PCAP.

AMI?

AMI is a language that was designed to build highly readable scenarios to generate PCAPs. It is a C library with C++ bindings generating the Python bindings used by pcraft.

You can find more documentation on AMI with the Programming with AMI guide.

Creating a Hello World script

Create a file called "hello.ami", we want to add the following content:

ami_version 1

action Generate_a_new_domain {
  exec GenerateNewDomain
}

sleep 3

repeat 3 as $index {
       action dns {
       	      exec DNSConnection
       }
       sleep 0.2
}

sleep 0.3

Now execute the pcraft program:

pcrafter hello.ami hello.pcap

Let's read the result pcap using tshark:

$ tshark -r hello.pcap 
    1   0.000000 192.168.127.116 ? 1.1.1.1      DNS 83 Standard query 0x0000 A alice-kaleidoscopes.com
    2   0.000000      1.1.1.1 ? 192.168.127.116 DNS 122 Standard query response 0x0000 A alice-kaleidoscopes.com A 10.81.21.0
    3   0.200000 192.168.34.135 ? 1.1.1.1      DNS 83 Standard query 0x0000 A alice-kaleidoscopes.com
    4   0.200000      1.1.1.1 ? 192.168.34.135 DNS 122 Standard query response 0x0000 A alice-kaleidoscopes.com A 10.171.215.203
    5   0.400000 192.168.234.128 ? 1.1.1.1      DNS 83 Standard query 0x0000 A alice-kaleidoscopes.com
    6   0.400000      1.1.1.1 ? 192.168.234.128 DNS 122 Standard query response 0x0000 A alice-kaleidoscopes.com A 10.0.8.113

Writing a Scenario

Please look at the documentation on this topic to understand more about the engine: "Writing a Scenario".

Available Plugins

The Plugins documentation is generated from themselves: Plugins Documentation

List of Similar Projects

https://tshark.dev/packetcraft/scripting/scripted_gen/

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