steve@rei:~/code/md5coll> md5sum good2 bad2
1235f679c2250f08e750e45e0eabe1f2 good2
1235f679c2250f08e750e45e0eabe1f2 bad2
steve@rei:~/code/md5coll> ls -l good2 bad2
-rwxr-xr-x 1 steve users 3648 2005-11-17 22:36 bad2
-rwxr-xr-x 1 steve users 3648 2005-11-17 22:36 good2
steve@rei:~/code/md5coll> ./bad2
Die world!
steve@rei:~/code/md5coll> ./good2
Hello world!
steve@rei:~/code/md5coll>
This can be done for any binary you have the source too. Any program can be made this way.
Procedure/"paper" soon!
Cheers,
Steve