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bshi02
02-10-2013, 03:10 AM
I had used packet sniffer s/w during I listened to Online streamming video lesson which My elder sister purchased, and get below URL logs and I tried to download mp4 file from below url logs ,but It won't download(404 forbidden error) with tools (net transport)I know.


http://61.110.247.86/redirect/edump4.eduwill.net/eduwillhttp/high_vod/2013/Gov9/EN/L/G2L13EN01H001.mp4?px-bps=1865712&px-bufahead=10
http://61.110.247.86/redirect/edump4.eduwill.net/eduwillhttp/high_vod/2013/Gov9/EN/L/G2L13EN01H001.mp4
http://edump4.eduwill.net/eduwillhttp/high_vod/2013/Gov9/EN/L/G2L13EN01H001.mp4
http://edump4.eduwill.net/auth/getsid?key=MzExMjMyMTgwMzgxOTIxNzM1MzE3NTIzODAxOGV kdW1wNC5lZHV3aWxsLm5ldDA1NC9lZHV3aWxsaHR0cC9oaWdoX 3ZvZC8yMDEzL0dvdjkvRU4vTC9HMkwxM0VOMDFIMDAxLm1wNDI 1NzI0OTAxMDExMDEyMTE5MzMyMTUxMmVkdXdpMDAwMDAwMDMwM DA2NDc0MQ==&path=/eduwillhttp/high_vod/2013/Gov9/EN/L/G2L13EN01H001.mp4
http://edump4.eduwill.net/auth/delsid
http://edump4.eduwill.net/eduwillhttp/high_vod/ETC/Title/2013/Gov9/L/2-GEN-L.wmv?px-bps=1035732&px-bufahead=40
http://edump4.eduwill.net/eduwillhttp/high_vod/ETC/Title/2013/Gov9/L/2-GEN-L.wmv
http://edump4.eduwill.net/auth/getsid?key=MzExMjMyMTgwMzgxOTIxNzI5MzE3NTIzODAxOGV kdW1wNC5lZHV3aWxsLm5ldDA1NS9lZHV3aWxsaHR0cC9oaWdoX 3ZvZC9FVEMvVGl0bGUvMjAxMy9Hb3Y5L0wvMi1HRU4tTC53bXY yNTcyNDkwMTAxMTAxMjExOTMzMjE1MTJlZHV3aTAwMDAwMDAzM DAwMDE2MDY=&path=/eduwillhttp/high_vod/ETC/Title/2013/Gov9/L/2-GEN-L.wmv
http://contents.e-campus.co.kr/vmc/setCookieRedirect.html?pname0=my_score&pval0=87.5&pname1=myprog&pval1=87.5&pname2=classprog&pval2=43.67&pname3=study&pval3=YYYYYYYYYYYYYYYYYYYYYYYYYYYYYYYYYYYYYYYYYYYY YYYYNNNYNNNYYYNNYYYY&pname4=minStudyTime&pval4=&pname5=totalStudyTime&pval5=&totalsize=6&nextURL=
http://contents.e-campus.co.kr/vmc/146952/lecture.htm

And I just have noticed that Before accessing wmv or mp4 files there is always URL of "blah..blah../auth/getsid?key=...blah..blah." parameter.
It seems that getsid URL is protection to prevent from unauthenticaion download.
Is there any ways to bypass or remove this getsid protection in order to download mp4 file?
I'm sorry for my wierd English and any help would be appreciated.

[EDIT]I found out by the googling that Media streaming player(aqua player) which I have to use to listen these online lesson has the protection of DRM based .
and there is developer's Homepage. In there Homepage,this Link (http://www.worldlingo.com/SYls3jUpdI3IRq6QLfG86G,AeqUamF5vgsZbrxpDzkcM-/translation?wl_url=http%3A%2F%2Fwww.cdnetworks.co. kr%2FSE%2FAP%2FaquaAuth.jsp&wl_srclang=KO&wl_trglang=EN) said that it use one-time authentication key to block duplication log-in or ID or IP and use specialized certification method to block Illegal streaming URL access.