Comments on: boo2pdf

By: Martin Moeller

Martin Moeller — Sat, 01 Oct 2011 17:57:36 +0000

Here’s a link on how to build online BOOks: http://publibz.boulder.ibm.com/cgi-bin/bookmgr_OS390/Shelves/EZ2ZO10I

By: Martin Moeller

Martin Moeller — Sat, 01 Oct 2011 17:30:59 +0000

I tried debugging the libhlcwam.so dynamic library using IDA Pro 5.5 Advanced.
Wow, this thing is really big !
Even with the (buggy) Decompiler it’s hard to crack/hack.

I currently come only slowly forward due to the bigness.
I currently working on a text file describing the file format, only the header is partially
done.

Have you other ideas on how to come forward faster ???!?!?

By: Martin Moeller

Martin Moeller — Sat, 01 Oct 2011 09:36:53 +0000

Yes, i tried the same, and you’re completely right !!

By: kev009

kev009 — Sat, 01 Oct 2011 07:58:40 +0000

@Martin

These come from the IBM mainframe world so the encoding seems to be EBCDIC. I poked around with a hex editor and saw some strings at least.

By: Martin Moeller

Martin Moeller — Sat, 01 Oct 2011 07:56:30 +0000

I mean a 7-byte header, sorry.

By: Martin Moeller

Martin Moeller — Sat, 01 Oct 2011 07:55:49 +0000

There seems to be at least a 6-byte header. Bytes 3-6 (inclusive) in most files
are zero.

By: Martin Moeller

Martin Moeller — Sat, 01 Oct 2011 07:52:28 +0000

Hi again,

one thing is a fact: The text of the book isn’t stored as pure ASCII.
Maybe compression is used. Looked at it and, …, don’t seem to be Deflate.

By: kev009

kev009 — Sat, 01 Oct 2011 06:21:16 +0000

@Martin,

I don’t. I’ve asked IBM for it in the past so I could do a proper filter but they didn’t seem interested in sharing.

Let me know if you find anything.

By: Martin Moeller

Martin Moeller — Sat, 01 Oct 2011 05:27:05 +0000

Hi,

do you have some informations about the File Format of .boo files ?