Project:RELaserSoftware

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Caution reversing.jpg

Reverse Engineering Laser Software

The laser software by Leetro is bad, we need to know about the .mol file that is created by it so we can create our own in some fashion. Also if it does anything fancy when it downloads itself via USB.

Background

The software is available here. Please scan this with antivirus software before use.

There is a special patched version that cannot currently (but hopefully one day) will be useful for exploring .mol files on babbage in EB4890's folder.

Note that this says there's software bounds protection with firmware versions 4.1.0.0 or above (once origin is set)
the firmware is in the "And tools update" .rar file
the above, translated by google
Has comments on the .ini file settings


Current State of work

  • We have some knowledge of the .MOL format
  • We have a .TXT to .MOL compiler based on a dll. (Windows or Wine only)
  • We have a .TXT parser/generator using python and construct

Currently to do

  • Figure out DXFs - A python to dxf to pdf converter might be useful. It seems to have got swallowed by by gaping maw of broken links. I've not found a stand alone parser.
  • Figure out which parts of the TXT file correspond to which function calls, so we know how to generate meaningful TXT files.
  • More work on .Mol files?

Current Repo

Current Repo of work done by user:JasperWallace

Initial Analysis of .mol file

Looking at: /Solexious/MarioBoxes/MINIMARIO.MOL

No ASCII strings (looking using strings)

Does not appear to be compressed (too many zeroes)

0x000 Header
0x200 One set of information What?
0x400 Another set of information.
0xa10 Likely co-ordinate data. Quite repetitive. Analysis document was mario boxes, with many repetitions of sub boxes, so that makes sense. It looks like possible 16bit number co-oords as the numbers range from a few thousands to hundreds. 32bits are in unrealistic ranges (huge in negative ranges).

Projects/RELaserSoftware/Compilation traces

USB

Projects/RELaserSoftware/USB protocol

State Dump

Now all in this mercurial repo:

http://pointless.net/hg/

Random Links that may be useful

Driver

Works for VID 0548, PID 1005. Description of the device is EZ-USB (68013A), which is basically a serial interface.