[oclug] CIM file format.
rjordan at student.math.uwaterloo.ca
Wed Jul 23 14:26:18 EDT 2003
I've been doing some work reverse engineering some Linux based
access points, and I'm wondering if anyone has heard of .cim files.
(The firmware for one particular AP is distributed in a file
I am presuming it is some type of compressed image. They are
not cramfs as many of the other linux access points are. Strings
doesn't show anything useful. Attempting to uncompress (using
unzip, gunzip, bunzip2, ar, uncompress and others) doesn't seem
to work. Running the file command only gives data:
# file CN3000_Firmware_v.1.21.cim
(Does anyone know where to get a really comprehensive magic file
vgrepping the file gives a few interesting bits, such as:
0000170: ab59 7028 b598 31b6 8b3c 2f7f 8b45 ed3b .Yp(..1..</..E.;
0000180: 0606 feea fa9f ff43 f8fe 7a90 7e69 70f2 .......C..z.~ip.
0000190: 89db 60da 626b dae4 6933 cfe3 f546 7341 ..`.bk..i3...FsA
Which almost seems to be Czip (second line).
Anyways, I thought I'd throw this out, and if anyone has heard of
cim, give me a shout.
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