The accepted answer has some flaws. They do not change the conclusion, but it is wrong in some points.
The Copyright Act (9.610/98) really applies in part to "computer programs", but it is in the Law 9.609/98 that is most of the rationale for his reply.
First, the copyright of a "computer program" falls into the public domain within 50 years old, in accordance with paragraph 2 of Art. 2:
§ 2º The protection of rights related to the program of
computer for the period of fifty years, from 1 January of
January of the year following that of its publication or, in the absence thereof,
of its creation.
I even got to being in doubt if the answer couldn’t be Not for the simple use, because the Brazilian law is quite permissive, and of all moral rights of the author, provided in art. 24 of Law 9.610/98 (see art. 24), only two were assured by Law 9.609/98:
§ 1º The provisions concerning
moral rights, except at any time, the right of
author of claiming paternity of the computer program and the
copyright to object to unauthorised amendments where they
involve deformation, mutilation or other modification of the
computer, which damages your honor or your reputation.
The problem is that you would violate rights patrimonials of the author, among which are:
Art. 29. It depends on the author’s prior and express authorization to use the work, by any means, such as:
I - partial or full reproduction;
II - the edition; [...]
VI - the distribution, when not intrinsic to the contract signed by the author with
third party for the use or exploitation of the work;
So to the crackear
and distribute the program, you would focus on art. 12 of Law 9.609/98:
Art. 12. Copyright infringement of computer program:
Sentence - Detention of six months to two years or fine.
And if it’s for trade purposes it’s much worse:
§ 1º If the violation consists in the reproduction, by any means, of
computer program, in whole or in part, for trade purposes,
without the express permission of the author or his representative:
Feather - Imprisonment of one to four years and fine.
§ 2º In the same sentence of the previous paragraph, those who sell the
sale, entry into the country, purchase, concealed or deposited, for purposes
trade, original or copy computer program, produced
with copyright infringement.
It is illegal yes. Because you would inflict the license agreement to use the program. This Article - Illegal Internet Software Distribution Problems addresses this subject.
– stderr