ain@j.cc.purdue.edu (Patrick White) (08/02/88)
Submitted by: inria.inria.fr!rouaix(Francois Rouaix)
Summary: Converts teh sector dump of a boot block into an executable file.
Poster Boy: Patrick White (ain@j.cc.purdue.edu)
Archive Name: binaries/amiga/volume8/xboot.b.sh.Z
Tested.
NOTES:
Docs are so small that I just packeged them in with the source and
binary shars.
It was an arc, but is not a shar.
I think I tried compiling it under Manx and it worked, but I forgot my
notes on that.
.
-- Pat White (co-moderator comp.sources/binaries.amiga)
ARPA/UUCP: j.cc.purdue.edu!ain BITNET: PATWHITE@PURCCVM PHONE: (317) 743-8421
U.S. Mail: 320 Brown St. apt. 406, West Lafayette, IN 47906
[archives at: j.cc.purdue.edu.ARPA]
========================================
# This is a shell archive.
# Remove everything above and including the cut line.
# Then run the rest of the file through sh.
#----cut here-----cut here-----cut here-----cut here----#
#!/bin/sh
# shar: Shell Archiver
# Run the following text with /bin/sh to create:
# xboot.doc
# xboot.uu
# This archive created: Mon Aug 1 12:23:36 1988
# By: Patrick White (PUCC Land, USA)
cat << \SHAR_EOF > xboot.doc
This is a VERY simple utility I felt I needed to study those nasty Viruses
hanging around...
It converts a boot-block into an executable file, so you may use
your favorite debugger (Wack, Dis, ...) to study it.
SYNTAX: xboot infile outfile
CAVEATS:
<infile> should be exactly 1024 bytes long. It is normally the dump
of blocks 0 and 1 of a floppy disk.
DETAILS:
The first three longwords of the boot-block are put in the second hunk
(data hunk).
All other data is thrown into the first hunk (code hunk).
This has the disadvantage of breaking the PC-relative adressing for
the data (like in ByteBandits virus).
COMPILATION NOTES:
I used standard AmigaDOS file functions, so that you may compile with
amiga.lib before lc.lib, and have a smaller executable.
DISTRIBUTION:
Free ! This a Public Domain. Do whatever you want with this program.
AUTHOR:
Francois ROUAIX
rouaix@inria.inria.fr
SHAR_EOF
cat << \SHAR_EOF > xboot.uu
begin 600 xboot
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``
end
size 2256
SHAR_EOF
# End of shell archive
exit 0