Search and replace string in executable files

aalex77 · 05-25-2006, 10:21 AM

Hello, i whish to write e little program that allow me to search a string in an executable file.
I though something like that:

myprog file_name string_to_search string_to_replace

Obviosly the two strings has the same length.

Some one can give me some hint on how to search a text string in an executable file??
I tried to open it as a binary file but my purpose is to get a bit sequency (0 and 1), cause i just find out the way to transform a string in a bitstream.
Regards

chrism01 · 05-25-2006, 08:22 PM

3 things you can look at:
man strings
man od
binmode in Perl

aalex77 · 05-26-2006, 06:32 PM

Thanks i will try!
Regards