Scapy is a powerful Python-based interactive packet manipulation
program and library.
It is able to forge or decode packets of a wide number of protocols,
send them on the wire, capture them, match requests and replies, and
much more.
It can easily handle most classical tasks like scanning, tracerouting,
probing, unit tests, attacks or network discovery (it can replace
hping, 85% of nmap, arpspoof, arp-sk, arping, tcpdump, tethereal, p0f,
etc.). It also performs very well at a lot of other specific tasks
that most other tools can't handle, like sending invalid frames,
injecting your own 802.11 frames, combining technics (VLAN hopping+ARP
cache poisoning, VOIP decoding on WEP encrypted channel, ...),
etc.
See
interactive tutorial
and
the quick demo: an interactive session
(some examples may be outdated).
Based on the "Hardware" category.
Alternatively, view scapy alternatives based on common mentions on social networks and blogs.
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Scapy is a powerful Python-based interactive packet manipulation program and library.
It is able to forge or decode packets of a wide number of protocols, send them on the wire, capture them, store or read them using pcap files, match requests and replies, and much more. It is designed to allow fast packet prototyping by using default values that work.
It can easily handle most classical tasks like scanning, tracerouting, probing,
unit tests, attacks or network discovery (it can replace hping, 85% of nmap,
arpspoof, arp-sk, arping, tcpdump, wireshark, p0f, etc.). It also
performs very well at a lot of other specific tasks that most other tools can't
handle, like sending invalid frames, injecting your own 802.11 frames, combining
techniques (VLAN hopping+ARP cache poisoning, VoIP decoding on WEP protected
channel, ...), etc.
Scapy supports Python 2.7 and Python 3 (3.4 to 3.9). It's intended to be cross platform, and runs on many different platforms (Linux, OSX, *BSD, and Windows).
Scapy is usable either as a shell or as a library. For further details, please head over to Getting started with Scapy, which is part of the documentation.
Scapy install demo
Scapy can easily be used as an interactive shell to interact with the network.
The following example shows how to send an ICMP Echo Request message to
github.com, then display the reply source IP address:
sudo ./run_scapy
Welcome to Scapy
>>> p = IP(dst="github.com")/ICMP()
>>> r = sr1(p)
Begin emission:
.Finished to send 1 packets.
*
Received 2 packets, got 1 answers, remaining 0 packets
>>> r[IP].src
'192.30.253.113'
The documentation contains more advanced use cases, and examples.
Other useful resources:
Scapy works without any external Python modules on Linux and BSD like operating systems. On Windows, you need to install some mandatory dependencies as described in the documentation.
On most systems, using Scapy is as simple as running the following commands:
git clone https://github.com/secdev/scapy
cd scapy
./run_scapy
To benefit from all Scapy features, such as plotting, you might want to install
Python modules, such as matplotlib or cryptography. See the
documentation and
follow the instructions to install them.
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Want to contribute? Great! Please take a few minutes to [read this](CONTRIBUTING.md)!
*Note that all licence references and agreements mentioned in the scapy README section above
are relevant to that project's source code only.
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