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coWPAtty for Windows MAIN:
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# Z6 _( K* G4 k7 m4 ?7 K6 ^"coWPAtty is designed to audit the pre-shared key (PSK) selection for WPA networks based on the TKIP protocol." –8 ~( B5 q$ r Y3 i% c4 V
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$ Y# e& P7 L/ a; D3 j1 w _Joshua Wright.
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8 `6 S4 i7 p# {8 IProject Homepage: http://www.willhackforsushi.com/Cowpatty.html
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4 P* o- I1 Z1 v' [7 }+ aLocal Mirror: Cowpatty-4.0-win32.zip/ u9 y& J: h% R7 ~
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8 [: h- Y' X7 S& S! JcoWPAtty Dictionary Attack- N0 Q9 G5 W& i% R) l* x$ l
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Precomputing WPA PMK to crack WPA PSK/ ^. _! ^6 W7 J* q M0 e# E
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4 _. T& \' @* Z" d* n tcoWPAtty Precomputed WPA Attack
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/ Z6 p. h; q( V( A' S8 a, }4 d3 DcoWPAtty Recomputed WPA2 Attack( O2 f9 Q" ~9 E) C" H& |
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Tables, b) M: n" {: F2 M G- @0 e
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4 o0 R, w3 A& R1 XcoWPAtty& f6 }; K! B- c) @2 V4 ~' N2 G+ ` T7 c1 y% y. b
Usage:- U;
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W8 R/ o: J. pcoWPAtty Dictionary Attack:
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Toperform the coWPAtty dictionary attack we need to supply the tool witha capture file that includes the TKIP four-way handshake, a dictionaryfile of passphrases to guess with and the SSID for the network.
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& I4 S$ h& U1 ZIn orderto collect the four-way handshake you can either wait until a clientjoins the network or preferably you can force it to rejoin the networkusing tools like void11 or aireplay and capture the handshakes usingsomething like kismet, ethereal or airodump.
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* I" `9 @# l) m& {/ H9 @! M6 u% icowpatty -f dict -r wpapsk-linksys.dump. Z4 w; l6 K& b |7 i+ }; f- Y' S
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As youcan see this simple dictionary attack took 51 seconds, we can speed upthis process by precomputing the WPA-PMK to crack the WPA-PSK (seebelow).
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wpapsk-linksys.dump is the capture containing the four-way handshake v& y' p7 E$ W/ @0 `/ b! ], q9 w0 r
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, d9 R% ?1 H+ Y s n. C4 ]& ~+ W# e( Ydict is the password file 6 t4 r% z% [8 Q
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Precomputing WPA PMK to crack WPA PSK:" d- Z: I! F. `
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genpmkis used to precompute the hash files in a similar way to Rainbow tablesis used to pre-hash passwords in Windows LANMan attacks.% q0 Y7 B9 K" b8 c
There is aslight difference however in WPA in that the SSID of the network isused as well as the WPA-PSK to "salt" the hash.1 K1 \6 N( G: ~$ N8 D
3 E3 x6 T8 \( ]0 P8 ~& b% D, aThis means that weneed a different set of hashes for each and every unique SSID i.e. aset for "linksys" a set for "tsunami" etc.
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So to generate some hash files for a network using the SSID cuckoo we use:% N# S u" k( U. {
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dict is the password file
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linksys.hashfile is our output file |: y T% G+ \% r; T- ^% n% j
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linksys is the network ESSID l3 ?; a2 f6 u! \* i4 V0 A
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coWPAtty Precomputed WPA Attack:: l
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+ B( ?. @8 j( Z' l+ h8 P& S! wNow wehave created our hash file we can use it against any WPA-PSK networkthat is utilising a network SSID of cuckoo.9 A9 K& q" u/ D. F( @$ Z: Y
Remember the capture(wpa-test-01.cap) must contain the four-way handshake to be successful.
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cowpatty- m) |9 R6 ~) Y, r, Z9 z3 [1 U- h' x$ }4 `
-d linksys.hashfile -r wpapsk-linksys.dump
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wpa-test-01.cap is the capture containing the four-way handshake$ O* W, ~% C0 r( `& i$ U6 E
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/ M/ x0 [3 c9 O: Nlinksys.hashfile are our precomputed hashes) M7 C) \5 @$ J% L) W5 t
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+ K0 U' l, X& ]; b9 E- \; E% R& S/ ^linksys is the network ESSID) _' d0 H% }/ @6 `
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8 e/ y$ o; ^% N$ ~+ v! I+ YNotice that cracking the WPA-PSK took 0.04 seconds with the pre-computed attacked as opposed to 200 secondswith standard dictionary attack mode, albeit you do need to pre-computethe hash files prior to the attack.( ^7 f/ I# ? k6 ^/ K. k$ d3 _, K7 c% p: r
However, precomputing large hashfiles for common SSIDS (e.g. linksys, tsunami) would be a sensible movefor most penetration testers.
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coWPAtty Precomputed WPA2 Attack:
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coWPAtty4.0 is also capable of attacking WPA2 captures.- m; `$ v( Q8 s' m: p
8 l& [/ l! H$ W6 ~, H* WNote: The same hashfile as was used with the WPA capture was also used with the WPA2capture.
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m9 ]7 \" u" N4 _! m) ]) X7 o* |-d linksys.hashfile -r wpa2psk-linksys.dump& w3 j2 E0 s/ r' f. ~+ g2 C% |; l& q8 ?
-s Linksys
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wpa2psk-linksys.dump is the capture containing the four-way handshake: b' F0 O# s& }* U; ^& J ]
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dict is the password file) g$ e8 i( p0 D9 j4 X
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linksys is the network SSID
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coWPAtty Tables:
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The Church of Wifi have produced some lookup tables for 1000 SSID's computed against a 170,000 word password file.+ T9 r' W% F/ z6 n
The resultant table are approximately 7 Gigabytes in size and can be downloaded via Torrent:$ }7 {9 }& a, p+ c( @; X( m$ V
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http://torrents.lostboxen.net/co ... atty-4.0_2006-10-19
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1 s+ W$ Y0 D. Q! m( Q, U( u/ X5 bA 33 Gigabyte set of tables are also available: http://umbra.shmoo.com:6969/8 Z% H: p' |# y5 S
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Or you can buy them via DVD, direct from Renderman (initiator of the project):
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http://www.renderlab.net/projects/WPA-tables/ |
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