3.0 KiB
The Fluffy Suite
Fluffy was begun in April 2011 in Tennessee, as a replacement for the aging "dirtbags.ip" codebase. It is comprised of multiple small standalone binaries, which are meant to be chained together, either on the command-line or from a shell script, to create a more powerful (and specific) piece of software.
Usually, a program expects input on stdin, and produces output on stdout. Flags are sparse by design.
Fluffy source code is purposefully spartan and easy to audit. Forks are encouraged, please let me know if you make one.
How To Build
curl -L https://github.com/dirtbags/fluffy/archive/master.tar.gz | tar xzvf -
cd fluffy-master
make DESTDIR=$HOME install
On an Ubuntu system, you may need to log out, and log back in, before the utilities are in your path.
On a non-Ubuntu system,
you may need to edit your .bashrc
to add $HOME/bin
to your PATH
environment variable.
Programs
hd: Hex Dump
Like the normal hd, but with unicode characters to represent all 256 octets, instead of using "." for unprintable characters.
unhex: unescape hex
Reads ASCII hex codes on stdin, writes those octets to stdout.
The following pipe is equivalent to "cat":
./hd | cut -b 11-58 | ./unhex
xor: xor mask octets
Applies the given mask as an xor to input. The mask will be repeated, so for a 1-value mask, every octet is xored against that value. For a 16-value mask, the mask is applied to 16-octet chunks at a time.
The "-x" option treats values as hex.
The following pipe is equivalent to "cat":
./xor 42 | ./xor -x 2A
skip: discard initial octets
Throws away some initial octets from stdin,
and sends the rest to stdout.
You could use dd
for the same purpose.
This skip command:
skip 5
Is equivalent to this dd
command:
dd skip=5 bs=1 status=none
pcat: print text representation of pcap file
Prints a (lossy) text representation of a pcap file to stdout.
This program is the keystone of the Fluffy Suite. By representing everything as text, programmers can use any number of standard Unix text processing tools, such as sed, awk, cut, grep, or head.
Output is tab-separated, of the format:
timestamp protocol options src dst payload
Frequently you are only interested in the payload, so you can run pcat like:
cat myfile.pcap | pcat | cut -f 6
Remember the unhex
program,
which will convert payloads to an octet stream,
after you have done any maniuplations you want.
pmerge: merge pcap files
Takes a list of pcap files, assuming they are sorted by time (you would have to work hard to create any other kind), and merges them into a single sorted output.
puniq: omit repeated frames
Removes duplicate frames from input, writing to output.
hex: hex-encode input
The opposite of unhex
.
The following is the equivalent of cat
:
hex | unhex
printfesc: printf escape input
Reads octets, writes a string suitable for copy-paste into printf.
pyesc: python escape input
Escapes input octets for pasting into a python "print" statement.