Anatomy of ALLCAM

[GennyGenny]

I have open my second allcam , desoldered the flash (4megs) and read it with an external reader/programmer.

The first 64k are crypted (should be the bootloader) and the rest is uncrypted. Anyone has some info (hardware or software) about this cam?

 

[Nappy08]

AW: Anatomy of ALLCAM

Xcrypt-Hardware like Jackcam, Maxcam V1 - older Cam Hardware!

Why you wanna know more about the Hardware of that cam?

 

[GennyGenny]

Old? Is there a new hardware? Anyway i'm playing with my second cam just for fun

 

[Nappy08]

AW: Re: Anatomy of ALLCAM

Old? Is there a new hardware?

Yes new Cam Hardware is used in Unicam Evo, Unicam Twin, Maxcam Twin V2 and Deltacam! Thats the known new Cams with new Hardware in Germany!

 

[GennyGenny]

AW: Anatomy of ALLCAM

It sound strange. Why a cam like allcam (not old) use an old hardware? Anyway i found a little thing

Some screen-shot , the first is the crypted part, the second is the uncrypted ( should be the firmware ) and i have also found the start (or similar)

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[Nappy08]

AW: Anatomy of ALLCAM

It sound strange. Why a cam like allcam (not old) use an old hardware?

It doesn't sound strange it is for sure older Cam-Hardware like Jackcam and Maxcam Twin V1! You can believe what you want! You have open the Cam and you can look what is inside? Is there to seen a chip on which is written Xrcypt? What is further to read on the chip?

 

[GennyGenny]

AW: Anatomy of ALLCAM

Sorry for the misunderstanding. I mean "sound strange" for a new cam to use an old hardware instead the new. I believe what you say, i'm talking about the way taken from the allcam productor.

Anyway, i'm continuing to looking for informations. I found the entry point of the program, now i'm trying to understand the encryption used in hmp files. So i'll be able to replace the original with a custom program.

 

[Nappy08]

AW: Anatomy of ALLCAM

I found the entry point of the program, now i'm trying to understand the encryption used in hmp files. So i'll be able to replace the original with a custom program.

Sounds great! Let me know if you was succesful! Thanks!

 

[GennyGenny]

AW: Anatomy of ALLCAM

DONE!! I wrote a little program and i can decrypt hmp in bin and bin to hmp (don't ask me the encryption used and keys!).

Unfortunately i can' modify the program. Inside there is some kinda of crc and the loader check it when i try to program the cam.

 

[Nappy08]

AW: Anatomy of ALLCAM

Super! I don't ask!DD

Perhaps you can try to built a firmware complete as own made?

 

[GennyGenny]

AW: Anatomy of ALLCAM

I GOT IT! Now i can decrypt the hmp file, modify and recrypt again in hmp. Next step: build a custom firmware.

 

[Nappy08]

AW: Anatomy of ALLCAM

Wow, thats really super!:yahoo: So, I hope the custom firmware will be much better, then the original firmware for the VU+ Allcam!:ja