On 6 Jan 2007 19:39:21 -0000, thesinoda@xxxxxxxxxxx <thesinoda@xxxxxxxxxxx> wrote:
Good day If you look at the end of your steged file you will notice it will end with 30 00 02 FF FF. So a simple HEX search will reveal all steged files.
According, to what you've written, I've created simple signature for clamav: mkdir testing cd testing echo "Steganography:0:EOF-5:3000(00|01|02|03|04|05|06|07|08|09|0a|0b|0c|0d|0e|0f)ffff"
stego.ndb
this can be tested in following way: for i in `seq -f %3.0f 0 255`; do perl -e 'print "A"x100' > test_$i; printf "0: 3000 %02xff ff\n" $i | xxd -r >> test_$i; done and running clamav, against samples: clamscan --database=clamav_stego.ndb . [and later clamscan --database=clamav_stego.ndb /] cheers, -- main (int a, char *b[puts("Michal 'GiM' Spadlinski")]) {}