Stop at Sending M4 message

A few things to consider before submitting an issue:

0. We write documentation for a reason, if you have not read it and are
having problems with Reaver these pages are required reading before
submitting an issue:
http://code.google.com/p/reaver-wps/wiki/HintsAndTips
http://code.google.com/p/reaver-wps/wiki/README
http://code.google.com/p/reaver-wps/wiki/FAQ
http://code.google.com/p/reaver-wps/wiki/SupportedWirelessDrivers
1. Reaver will only work if your card is in monitor mode.  If you do not
know what monitor mode is then you should learn more about 802.11 hacking
in linux before using Reaver.
2. Using Reaver against access points you do not own or have permission to
attack is illegal.  If you cannot answer basic questions (i.e. model
number, distance away, etc) about the device you are attacking then do not
post your issue here.  We will not help you break the law.
3. Please look through issues that have already been posted and make sure
your question has not already been asked here: http://code.google.com/p
/reaver-wps/issues/list
4. Often times we need packet captures of mon0 while Reaver is running to
troubleshoot the issue (tcpdump -i mon0 -s0 -w broken_reaver.pcap).  Issue
reports with pcap files attached will receive more serious consideration.

Answer the following questions for every issue submitted:

0. What version of Reaver are you using?  (Only defects against the latest
version will be considered.)

1. What operating system are you using (Linux is the only supported OS)?

2. Is your wireless card in monitor mode (yes/no)?

3. What is the signal strength of the Access Point you are trying to crack?

4. What is the manufacturer and model # of the device you are trying to
crack?

5. What is the entire command line string you are supplying to reaver?

6. Please describe what you think the issue is.

7. Paste the output from Reaver below.

[+] 2.44% complete @ 2014-08-29 15:40:28 (33 seconds/pin)
[+] Trying pin 02585673
[+] Sending EAPOL START request
[+] Received identity request
[+] Sending identity response
[!] WARNING: Receive timeout occurred
[+] Sending WSC NACK
[!] WPS transaction failed (code: 0x02), re-trying last pin
[+] Trying pin 02585673
[+] Sending EAPOL START request
[+] Received identity request
[+] Sending identity response
[!] WARNING: Receive timeout occurred
[+] Sending WSC NACK
[!] WPS transaction failed (code: 0x02), re-trying last pin
[+] Trying pin 02585673
[+] Sending EAPOL START request
[+] Received identity request
[+] Sending identity response
[!] WARNING: Receive timeout occurred
[+] Sending WSC NACK
[!] WPS transaction failed (code: 0x02), re-trying last pin
[+] Trying pin 02585673
[+] Sending EAPOL START request
[+] Received identity request
[+] Sending identity response
[!] WARNING: Receive timeout occurred
[+] Sending WSC NACK
[!] WPS transaction failed (code: 0x02), re-trying last pin
[+] Trying pin 02585673
[+] Sending EAPOL START request
[+] Received identity request
[+] Sending identity response
[+] Received M1 message
[+] Sending M2 message
[+] Received M3 message
[+] Sending M4 message

Reaver stoped at Sending M4 message, don't continue Pls give me some advice
Original issue reported on code.google.com by giangco...@gmail.com on 29 Aug 2014 at 12:47
djnando / reaver-wps

Stop at Sending M4 message #657
