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#1 17-10-2010 19:19:19

pamputt
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Inscription : 17-10-2010
Messages : 63

Fusionner des *.cap

Bonjour, au fil de mes tests j'emmagasine les fichiers *cap. Et comme je ne fais pas le tri au fur et à mesure, certains ne contiennent pratiquement rien, d'autres ne dure que 2 minutes, ... Donc en gros voila, ça me permettrait de nettoyer un peu tout ça s'il était possible de fusionner plusieurs fichiers *cap au sein d'un seul. C'est possible ?

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#2 17-10-2010 19:48:54

antares145
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Inscription : 29-09-2009
Messages : 5 199
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Re : Fusionner des *.cap

Sous BackTrack tu peux utiliser l'outil [c]mergecap[/c], fourni avec Wireshark (ex-Ethereal) :

La commande suivante fusionnera les fichiers test*.cap en un seul fichier out.cap :

mergecap -w out.cap test1.cap test2.cap test3.cap

Si tu ne sauvegardes que les IV's dans Airodump (option -i), tu peux utiliser [c]ivstools[/c] pour les fusionner également smile

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#3 17-10-2010 20:10:21

M1ck3y
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Messages : 6 354

Re : Fusionner des *.cap

man mergecap a écrit :

MERGECAP(1)                                                                The Wireshark Network Analyzer                                                                MERGECAP(1)

NAME
       mergecap - Merges two or more capture files into one

SYNOPSYS
       mergecap [ -a ] [ -F <file format> ] [ -h ] [ -s <snaplen> ] [ -T <encapsulation type> ] [ -v ] -w <outfile>|- <infile> ...

DESCRIPTION
       Mergecap is a program that combines multiple saved capture files into a single output file specified by the -w argument.  Mergecap knows how to read libpcap capture files,
       including those of tcpdump, Wireshark, and other tools that write captures in that format.

       By default, it writes the capture file in libpcap format, and writes all of the packets in both input capture files to the output file.

       Mergecap is able to detect, read and write the same capture files that are supported by Wireshark.  The input files don't need a specific filename extension; the file format
       and an optional gzip compression will be automatically detected.  Near the beginning of the DESCRIPTION section of wireshark(1) or <http://www.wire-
       shark.org/docs/man-pages/wireshark.html> is a detailed description of the way Wireshark handles this, which is the same way Mergecap handles this.

       Mergecap can write the file in several output formats.  The -F flag can be used to specify the format in which to write the capture file, mergecap -F provides a list of the
       available output formats.

       Packets from the input files are merged in chronological order based on each frame's timestamp, unless the -a flag is specified.  Mergecap assumes that frames within a sin-
       gle capture file are already stored in chronological order.  When the -a flag is specified, packets are copied directly from each input file to the output file, independent
       of each frame's timestamp.

       The output file frame encapsulation type is set to the type of the input files, if all input files have the same type.  If not all of the input files have the same frame
       encapsulation type, the output file type is set to WTAP_ENCAP_PER_PACKET.  Note that some capture file formats, most notably libpcap, do not currently support
       WTAP_ENCAP_PER_PACKET.  This combination will cause the output file creation to fail.

OPTIONS
       -a  Causes the frame timestamps to be ignored, writing all packets from the first input file followed by all packets from the second input file.  By default, when -a is not
           specified, the contents of the input files are merged in chronological order based on each frame's timestamp.

           Note: when merging, mergecap assumes that packets within a capture file are already in chronological order.

       -F  <file format>
           Sets the file format of the output capture file. Mergecap can write the file in several formats, mergecap -F provides a list of the available output formats. The default
           is to use the file format of the first input file.

       -h  Prints the version and options and exits.

       -s  <snaplen>
           Sets the snapshot length to use when writing the data.  If the -s flag is used to specify a snapshot length, frames in the input file with more captured data than the
           specified snapshot length will have only the amount of data specified by the snapshot length written to the output file.  This may be useful if the program that is to
           read the output file cannot handle packets larger than a certain size (for example, the versions of snoop in Solaris 2.5.1 and Solaris 2.6 appear to reject Ethernet
           frames larger than the standard Ethernet MTU, making them incapable of handling gigabit Ethernet captures if jumbo frames were used).

       -v  Causes mergecap to print a number of messages while it's working.

       -w  <outfile>|-
           Sets the output filename. If the name is '-', stdout will be used.  This setting is mandatory.

-T  <encapsulation type>
           Sets the packet encapsulation type of the output capture file.  If the -T flag is used to specify a frame encapsulation type, the encapsulation type of the output cap-
           ture file will be forced to the specified type, rather than being the type appropriate to the encapsulation type of the input capture files.

           Note that this merely forces the encapsulation type of the output file to be the specified type; the packet headers of the packets will not be translated from the encap-
           sulation type of the input capture file to the specified encapsulation type (for example, it will not translate an Ethernet capture to an FDDI capture if an Ethernet
           capture is read and '-T fddi' is specified).

SEE ALSO
       tcpdump(8), pcap(3), wireshark(1), tshark(1), dumpcap(1), editcap(1), text2pcap(1)

NOTES
       Mergecap is based heavily upon editcap by Richard Sharpe <sharpe[AT]ns.aus.com> and Guy Harris <guy[AT]alum.mit.edu>.

       Mergecap is part of the Wireshark distribution.  The latest version of Wireshark can be found at <http://www.wireshark.org>.

       HTML versions of the Wireshark project man pages are available at: <http://www.wireshark.org/docs/man-pages>.

AUTHORS
         Original Author
         -------- ------
         Scott Renfro             <scott[AT]renfro.org>

         Contributors
         ------------
         Bill Guyton              <guyton[AT]bguyton.com>

1.0.0                                                                                2008-03-29                                                                          MERGECAP(1)

Sinon tu as également la possibilité de donner à Aircrack cet argument:

aircrack-ng *.cap

histoire d'utiliser tous les fichiers de capture au format pcap qui se trouvent dans un dossier wink

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#4 17-10-2010 21:09:55

Squaks
Membre Irremplaçable
Inscription : 18-06-2009
Messages : 974

Re : Fusionner des *.cap

Sinon de chez aircrack-ng, il y a ivstool.

ivstools --convert <pcap file> <ivs output file>
          Extract ivs from a pcap file
ivstools --merge <ivs file 1> <ivs file 2> .. <output file>
          Merge ivs files

Sharkoff

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