루머) 다운그레이드 오픈소스 내일 공개?

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루머) 다운그레이드 오픈소스 내일 공개?

yh972516

2010-12-04 오후 3:03:25 Hit. 4992

<DIV align=center><FONT size=2><B>BREAKING NEWS FLASH!</B></FONT></DIV>
<P style="MARGIN: 0px"><BR>This just might be the ticket to making your own public "downgrader"? - aka <B>PSGrade</B>? <BR><BR>Posted on <B>XorLoser's Blog</B> earlier today:<BR><BR></P>
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<DIV>Originally Posted by <B>Estx</B> </DIV>
<DIV style="FONT-STYLE: italic"><U>December 4, 2010 at 1:34 pm</U><BR><BR>I’ve found the Masterkey from bruteforcing dumps from my system.<BR><BR>Took 27 minutes, over 8,100,000 possible keys. Lol – could’ve waited but ah well.<BR><BR>If anyone is interested in doing the same, you can find it on 3.41.<BR><BR>for(int i = 0; i < list.length; i++)<BR>if(HMAC-SHA-1(key[i]).ComputeHash(encryptChallengeBody) == matchResponseBody)<BR>{<BR>Success;<BR>}<BR><BR>Challenge and response I took from the dumps reported on <B>PSX-Scene</B>.<BR><BR>If graf doesn't find it by tomorrow – I'll release the key.<BR><BR>Only reason I'm holding it back – is because no one helped me when I asked for it. (;<BR><BR>It’s just psuedo code. Actual code has a few more lines than this.<BR><BR>Inclusive of byte conversion, list generating from binary dumps and other trivial functions.<BR><BR>I have no way to dump the data between my at90usb192 and PS3 so I can’t post any challenge/response logs.<BR><BR>And it’s not a magic key – it is the master key.<BR><BR>I have tried it so far from 3.41 and 3.50 on my slim and fat.<BR><BR>That’s the actual loop there: <B><U><A href="http://www.pastie.org/1346409" target=_blank>http://www.pastie.org/1346409</A></U></B><BR><BR>Prior to this is generation of the list etcetera.</DIV></TD></TR></TBODY></TABLE></DIV>
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<DIV>Originally Posted by <B>phiren</B> </DIV>
<DIV style="FONT-STYLE: italic"><U>December 4, 2010 at 3:55 pm</U><BR><BR>I’m thinking more of the code which does an SHA1-HMAC between the master key and the dongle ID to generate the device key which is finally SHA1-HMACed with the challenge.<BR><BR>A single device key will work on all firmware versions, which makes it just as useful as the master key for our purposes.<BR><BR>It just means that Sony can revoke that single device and you can’t possibly generate another device key. But since Sony will probably revoke every single device and start again with a new master key with the next firmware version, having the master key isn’t that useful.</DIV></TD></TR></TBODY></TABLE></DIV>
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<DIV>Originally Posted by <B>Estx</B> </DIV>
<DIV style="FONT-STYLE: italic"><U>December 4, 2010 at 4:02 pm</U><BR><BR>@phiren: That’s what I was thinking as I was learning how to generate the correct response before constructing a quick loop. The expected response is 20 bytes of what you suggested above.<BR><BR>I’ve found no other use of the master key yet.. so you’re quite right.<BR><BR>Mind you, I’m not as talented as some of the other developers here, I’m still playing around with new things I’m finding in the firmware’s. And thank’s to graf’s work – there’s even more to play around with.</DIV></TD></TR></TBODY></TABLE></DIV>
<P style="MARGIN: 0px">True? or Fiction? -- Tomorrow may be the answer that everyone been waiting for?<BR><BR>News Source: <B><U><A href="http://xorloser.com/?p=297&cpage=11#comment-1997" target=_blank>XorHack v2.0: The Updated PS3 Exploit Toolkit « xorloser’s blog</A></U></B> </P>
<P style="MARGIN: 0px"> </P>
<P style="MARGIN: 0px">관련 포럼: <A href="http://psx-scene.com/forums/f6/rumor-truth-fiction-sony-master-key-found-72158/" target=_blank>http://psx-scene.com/forums/f6/rumor-truth-fiction-sony-master-key-found-72158/</A></P>
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<P style="MARGIN: 0px">하앍... 빨리 좀 나와랏</P>

Lv.4 / 일병 . yh972516 (yh972516)

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