Would a strings of the UMD dumps be allowed here?
Moderator: cheriff
Would a strings of the UMD dumps be allowed here?
Hi,
Running
cat * | strings -9 | uniq
against the ripped UMD data produces quite a lot of interesting strings...
for example, we get
GCC: (GNU) 3.3.3+allegrex-2.2.1-psp-1.5.1.internal
and
host0:/usr/local/psp/devkit/module/pspnet.prx
and
sceKernelLoadModule()
and
SceParseHTTPheader_Library (on Ridge Racer) which i didnt think had a browser...
Of course, the most important conclusion from this is that the binaries are not encrypted (at least not entirely)...
I think we can learn a lot about how this thing works from these
i reckon they are still signed tho, and I reckon that the line that says
ULJS-00001|CCCD9317C815B9F5|0001|G|
has the signature in it. Unless im mistakes, the length of CCCD9317C815B9F5 is 64 bits, and not 128 bits (which is the length of the AES key)...
g
Running
cat * | strings -9 | uniq
against the ripped UMD data produces quite a lot of interesting strings...
for example, we get
GCC: (GNU) 3.3.3+allegrex-2.2.1-psp-1.5.1.internal
and
host0:/usr/local/psp/devkit/module/pspnet.prx
and
sceKernelLoadModule()
and
SceParseHTTPheader_Library (on Ridge Racer) which i didnt think had a browser...
Of course, the most important conclusion from this is that the binaries are not encrypted (at least not entirely)...
I think we can learn a lot about how this thing works from these
i reckon they are still signed tho, and I reckon that the line that says
ULJS-00001|CCCD9317C815B9F5|0001|G|
has the signature in it. Unless im mistakes, the length of CCCD9317C815B9F5 is 64 bits, and not 128 bits (which is the length of the AES key)...
g
... in English
Babel Fish Translation:
Achtung! Teilen Sie nicht interessante Sachen hier mit!
=
Note! Do not communicate interesting things here!
:-O
Achtung! Teilen Sie nicht interessante Sachen hier mit!
=
Note! Do not communicate interesting things here!
:-O
Re: Would a strings of the UMD dumps be allowed here?
No its 128bit. For each letter/number 8bit. but i think its rather some crc... don't have the iso though to check...ripnet wrote: i reckon they are still signed tho, and I reckon that the line that says
ULJS-00001|CCCD9317C815B9F5|0001|G|
has the signature in it. Unless im mistakes, the length of CCCD9317C815B9F5 is 64 bits, and not 128 bits (which is the length of the AES key)...
Re: Would a strings of the UMD dumps be allowed here?
no, each hex digit is equivalent to 4 binary digitsMelGibson wrote:No its 128bit. For each letter/number 8bit. but i think its rather some crc... don't have the iso though to check...ripnet wrote: i reckon they are still signed tho, and I reckon that the line that says
ULJS-00001|CCCD9317C815B9F5|0001|G|
has the signature in it. Unless im mistakes, the length of CCCD9317C815B9F5 is 64 bits, and not 128 bits (which is the length of the AES key)...
1111=15=F
11111111=255=FF
CCCD9317C815B9F5 is a hexidecimal number that can be represented by 64 binary digitsMelGibson wrote:ULJS-00001|CCCD9317C815B9F5|0001|G
hex
554C4A532D30303030317C434343443933313743383135423946357C303030317C47
43434344393331374338313542394635 128bit
but maybe i'm completly wrong :|
however, if you are taking it as a string instead of a number, then each digit is represented by 2 hex digits, which would amount to 128 bits, so we're both right, it just depends on how its used.
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