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coWPAtty for Windows MAIN:4 K, o2 J9 x/ k) z
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% X( N6 j* K& ^5 N6 ]" A' _( P"coWPAtty is designed to audit the pre-shared key (PSK) selection for WPA networks based on the TKIP protocol." –
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Joshua Wright.
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Project Homepage: http://www.willhackforsushi.com/Cowpatty.html u: \- N- ~: W9 ~* H
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: B3 q* f0 U C( ~) g% d9 OLocal Mirror: Cowpatty-4.0-win32.zip: Y$ b8 I9 P& _" s
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9 H! ?6 p9 g2 WcoWPAtty Dictionary Attack
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Precomputing WPA PMK to crack WPA PSK; E4 {4 O S8 v u' U2 ]+ e
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coWPAtty Precomputed WPA Attack
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* d4 L4 I* j' _+ @2 kcoWPAtty Recomputed WPA2 Attack/ L- K8 U) J/ |/ G l+ V% P A
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" ~0 T' g/ m& G9 S9 d" @coWPAtty\" |: O/ F) h! w6 n+ J3 U' }9 h% U+ z: V) h3 W
Tables! m [0 i1 E: e& y O1 `
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* L7 I+ ?7 r/ HcoWPAtty& f6 }; K! B- c) @$ D- p) ~, U/ x0 ~7 x# `% o
Usage:- U; 7 F8 K" Z F3 Q0 _1 `/ N0 q
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coWPAtty 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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" L6 F9 d+ f* a1 S( M, t, m' \In 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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# g D2 i% C; w) xcowpatty -f dict -r wpapsk-linksys.dump. Z4 w; l6 K& b |7 i+ }; f- Y' S, d& |# e0 D4 d: F7 E. I
-s linksys
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2 I; k/ A( X, X) @9 f4 GAs 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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3 b: b9 ?3 h4 U- Qwpapsk-linksys.dump is the capture containing the four-way handshake9 f( Y6 r; C0 ^% Q, F1 J
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* V3 v+ J& F$ u1 L1 Ddict is the password file / a! Q3 r6 z. d ~& F) c) H) |
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linksys is the network SSID4 d" J7 E8 w6 y/ m* X+ o. b
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Precomputing WPA PMK to crack WPA PSK:
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. v/ O) m v3 {3 F8 s& q+ C) Tgenpmkis used to precompute the hash files in a similar way to Rainbow tablesis used to pre-hash passwords in Windows LANMan attacks.
9 T: c$ z u+ w. x, e: [$ EThere is aslight difference however in WPA in that the SSID of the network isused as well as the WPA-PSK to "salt" the hash.
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' t. ^2 S8 f3 o+ ~6 O% s- C2 CThis 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:8 Y4 L* Z# _# Y1 y7 i" J
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genpmk
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7 {- }5 S0 m6 N) [( t* c. B1 U9 rdict is the password file
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linksys.hashfile is our output file( K' M, {) z* U% k6 e! x" Q
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S$ ]% a0 L& u7 X) o/ Blinksys is the network ESSID
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; X4 u1 _ i5 Z5 W @coWPAtty Precomputed WPA Attack:: l8 Q5 j" `/ ^$ W4 m' X
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' ]& \& O3 E8 Z6 U9 q* l* b2 ENow wehave created our hash file we can use it against any WPA-PSK networkthat is utilising a network SSID of cuckoo.4 Q+ j+ J2 m4 l6 {2 ?% h H
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 z
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' u; B; O: x9 l" I) V. Ewpa-test-01.cap is the capture containing the four-way handshake8 y$ G+ a" w1 J3 E1 p6 R/ U
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linksys.hashfile are our precomputed hashes6 `7 }- q% h+ l, [8 z& W( i, P- _8 E- u
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linksys is the network ESSID! X5 V4 G L+ p' f( S3 |$ N0 {
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6 N( O S) h I: A+ R# z* ANotice 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$ d- c; I+ c" a" ]
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:' e/ @3 U3 _- V8 i# b
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, a9 Y$ O- Z& T) N0 ^( @3 h6 |coWPAtty4.0 is also capable of attacking WPA2 captures.- m; `$ v( Q8 s' m: p0 Z% I" `$ L+ }1 T! l
Note: The same hashfile as was used with the WPA capture was also used with the WPA2capture.0 T0 i( r' D+ i/ i9 D( |, E& }1 T
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-d linksys.hashfile -r wpa2psk-linksys.dump& w3 j2 E0 s/ r' f. ~+ g+ s7 m0 |5 R; c1 x0 o4 M" n
-s Linksys
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wpa2psk-linksys.dump is the capture containing the four-way handshake
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- A8 Y0 c. c S& K) E" @+ w- ]2 jdict is the password file% B- e5 z0 x- T' T8 @+ t( B7 m+ V
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linksys is the network SSID
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coWPAtty Tables: / {5 w$ b4 u! {; z& M$ C" p
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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.
; ~- g5 a- I7 X r/ p$ gThe resultant table are approximately 7 Gigabytes in size and can be downloaded via Torrent:: U! c1 I0 m4 B: }9 f6 ^
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http://torrents.lostboxen.net/co ... atty-4.0_2006-10-19
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A 33 Gigabyte set of tables are also available: http://umbra.shmoo.com:6969/+ q6 x; D; Q; I/ i+ v
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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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