mirror of
https://github.com/Erreur32/cheat.git
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f46698b656
Performed an extensive refactoring on the entire application for the
sake of code-cleanliness.
- Refactored out of an ad-hoc Imperative paradigm into more of a
functional/declarative paradigm. IMO, this makes the application
signifcantly easier to understand.
- Moved away from `argparse` and into `docopt` for argument parsing
- Version bump to 2.0.0
- Performed extensive refactoring on the setup.py script. Script should
install to the system more cleanly now.
- Made minor formatting changes to the --list flag output
- Updated the README
Squashed commit of the following:
commit e5681bd536aa0220cdeb7884cc248db55be408c9
Author: Chris Lane <chris@chris-allen-lane.com>
Date: Sat Apr 26 23:30:21 2014 -0400
Fixed many bugs
Everything seems to work now, I think.
commit 764ec5950cee958eb1b8333ddfcb6bcd45c28429
Author: Chris Lane <chris@chris-allen-lane.com>
Date: Sat Apr 26 21:51:31 2014 -0400
Restructuring for the sake of setup.py
Seem to finally have a working install script
commit 5a866c23857b77ec65070dd8023cd734f2b7c242
Author: Chris Lane <chris@chris-allen-lane.com>
Date: Sat Apr 26 18:01:11 2014 -0400
Nits
commit a79954ba5b33d992fa6a32abffb33b161d624e3d
Author: Chris Lane <chris@chris-allen-lane.com>
Date: Sat Apr 26 17:53:03 2014 -0400
Implemented search
commit b570a897e9a12c15affe1a72628deae31836dee2
Author: Chris Lane <chris@chris-allen-lane.com>
Date: Sat Apr 26 17:11:27 2014 -0400
Nits
commit 1a8d85b44457f1b2131b3e8475c5270b5d0899e3
Author: Chris Lane <chris@chris-allen-lane.com>
Date: Sat Apr 26 17:02:22 2014 -0400
Still refactoring across files
Trying to make the program structure clearer
commit 34dffd6462e492e81ea558e2009a71051b7663c9
Author: Chris Lane <chris@chris-allen-lane.com>
Date: Sat Apr 26 16:40:37 2014 -0400
Breaking app into several files
This is for the sake of code-cleanliness
commit 4825d678ff5f9817ccbf727ef71e5dea15ff2586
Author: Chris Lane <chris@chris-allen-lane.com>
Date: Sat Apr 26 15:55:19 2014 -0400
Got syntax highlighting working
commit c37d7a626d451bfca3d4a072eb9fed604085170f
Author: Chris Lane <chris@chris-allen-lane.com>
Date: Sat Apr 26 15:29:22 2014 -0400
Reduced verbosity of function names
commit 8e626045186b37dce2480f5af1994ddfa8db79b5
Author: Chris Lane <chris@chris-allen-lane.com>
Date: Sat Apr 26 15:24:41 2014 -0400
Refactored argument passing
Fewer arguments now need to be passed throughout the app.
commit 807ba814650010b3dd1b59d27400b3fb4fcfede7
Author: Chris Lane <chris@chris-allen-lane.com>
Date: Sat Apr 26 11:40:05 2014 -0400
Working through the refactor
commit e34e6540d4f8cd727e98aac68289d515a02d5fe6
Author: Chris Lane <chris@chris-allen-lane.com>
Date: Thu Apr 24 20:00:10 2014 -0400
Got a basic end-to-end refactor working
Have re-implemented just the most basic functionality in the "cheat2"
file.
63 lines
2.1 KiB
Text
63 lines
2.1 KiB
Text
# TCPDump is a packet analyzer. It allows the user to intercept and display TCP/IP
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# and other packets being transmitted or received over a network. (cf Wikipedia).
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# Note: 173.194.40.120 => google.com
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# Intercepts all packets on eth0
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tcpdump -i eth0
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# Intercepts all packets from/to 173.194.40.120
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tcpdump host 173.194.40.120
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# Intercepts all packets on all interfaces from / to 173.194.40.120 port 80
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# -nn => Disables name resolution for IP addresses and port numbers.
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tcpdump -nn -i any host 173.194.40.120 and port 80
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# Make a grep on tcpdump (ASCII)
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# -A => Show only ASCII in packets.
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# -s0 => By default, tcpdump only captures 68 bytes.
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tcpdump -i -A any host 173.194.40.120 and port 80 | grep 'User-Agent'
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# With ngrep
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# -d eth0 => To force eth0 (else ngrep work on all interfaces)
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# -s0 => force ngrep to look at the entire packet. (Default snaplen: 65536 bytes)
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ngrep 'User-Agent' host 173.194.40.120 and port 80
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# Intercepts all packets on all interfaces from / to 8.8.8.8 or 173.194.40.127 on port 80
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tcpdump 'host ( 8.8.8.8 or 173.194.40.127 ) and port 80' -i any
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# Intercepts all packets SYN and FIN of each TCP session.
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tcpdump 'tcp[tcpflags] & (tcp-syn|tcp-fin) != 0'
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# To display SYN and FIN packets of each TCP session to a host that is not on our network
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tcpdump 'tcp[tcpflags] & (tcp-syn|tcp-fin) != 0 and not src and dst net local_addr'
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# To display all IPv4 HTTP packets that come or arrive on port 80 and that contain only data (no SYN, FIN no, no packet containing an ACK)
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tcpdump 'tcp port 80 and (((ip[2:2] - ((ip[0]&0xf)<<2)) - ((tcp[12]&0xf0)>>2)) != 0)'
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# Saving captured data
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tcpdump -w file.cap
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# Reading from capture file
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tcpdump -r file.cap
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# Show content in hexa
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# Change -x to -xx => show extra header (ethernet).
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tcpdump -x
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# Show content in hexa and ASCII
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# Change -X to -XX => show extra header (ethernet).
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tcpdump -X
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# Note on packet maching:
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# Port matching:
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# - portrange 22-23
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# - not port 22
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# - port ssh
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# - dst port 22
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# - src port 22
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#
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# Host matching:
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# - dst host 8.8.8.8
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# - not dst host 8.8.8.8
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# - src net 67.207.148.0 mask 255.255.255.0
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# - src net 67.207.148.0/24
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