#!/bin/bash
#
# noscript: A (Bash) Script for faking some "interesting" files which
# can be found in P2P networks and which are often used for dissuation abuse.
# This Script uses the real file names and fakes a) the file size and c) the 
# CRC-32 checksum.
# The working directory is the actual and the faking takes some hours and about 15 GB disk space. 
# At the script end the script cleans up by deleting the crcfaker files and itself.
# This is a simple example that it's easy to generate indications (fakes) and without
# confiscation and forensic analysis there is no court-proof evidence.
# Other sorts of fakes in P2P networks, e. g. faking an IP number via an open WLAN, can be
# found e. g. in the Heise News.

# "THE BEER-WARE LICENSE" (Revision 43):
# Dr. Rolf Freitag (rolf.freitag at email.de) wrote this file. 
# As long as you retain this notice you can do whatever 
# the GPL (GNU public License) allows with this stuff. 
# If you think this stuff is worth it, you can send me money via
# paypal or if we met some day you can buy me a beer in return.

# Version 0.21, 2008-08-10: Successfully tested, works without a bug,
# Version 0.22, 2008-08-13: Header optimisation

# Todo: Checks, e. g. for wget, multithreading (CRC Faker is single-threaded), parametrisation, 
# random timestamp for each file/dir, filetype specific faking of the file
# header, version for Unix/Linux and Cygwin (MS-Windows), 

# be verbose
set -x

# download CRC Faker, which fakes files with random bytes and a given CRC32 checksum 
wget http://www.crc2003.250x.com/fakecrc-1.0.zip

# unzip
unzip fakecrc-1.0.zip

# fakes
#   Purzel
# fake_program CRC32   size/bytes file name
Linux/fakecrc 85363198 733657088 "Masturbation 04 (Scenes) [Purzel-Video.com] (Solo_Mast_Dildo) (512x384 Super High Quality SHQ) (VG) - 1h32m34s.avi"
Linux/fakecrc 71216f29 733990912 "Purzel Masturbation Nr.6.avi"
Linux/fakecrc 32ca98ae 732518400 "Purzel-Video 125 - Masturbation Nr 3.avi"
Linux/fakecrc 1f4b685c 735899648 "Purzel Video 166 - Dicke Lippen kleine L??cher 4 CD1.avi"
Linux/fakecrc eba26ebb 736216392 "Purzelvideo 89 - Masturbation Nr 2.avi"
Linux/fakecrc 07a07fbc 791248896 "Purzel.Video.Masturbation.11.XXX.DVD-Rip.XviD.(Ripped.&.Released.by.M.E.G.A).avi"
Linux/fakecrc 16f3a039 730818560 "Purzel Video - Masturbation Nr. 1.avi"

#   Updown Entertainment
Linux/fakecrc 93378129 712396800 "GGG-Geile Girls-fertig zum vollspritzen(divx,xxx,bukkake).avi"
mkdir "GGG.Absolut.Sperma.German.2005.XXX.DVDRiP.XviD-WDE"
Linux/fakecrc 4da1e28d 737757184 "GGG.Absolut.Sperma.German.2005.XXX.DVDRiP.XviD-WDE/wde-as.avi"
mkdir "GGG.Amili.lernt.schlucken.German.2005.XXX.DVDRiP.XviD-WDE"
Linux/fakecrc ff0716d0 737748992 "GGG.Amili.lernt.schlucken.German.2005.XXX.DVDRiP.XviD-WDE/wde-als.avi"
Linux/fakecrc ca795a1f 737738752 "GGG.Die.Tittenkoenigin.German.2005.XXX.DVDRiP.XviD-www.Bitworld.mpg"

#  Videorama GmbH
Linux/fakecrc 6db8d43c 1523912704 "Videorama Das beste aus Maximum Perversum 5 (Rip by Egofist).avi"
Linux/fakecrc 0020feb4 273002496 "Gina Wild - XXX [DivX].avi"
Linux/fakecrc abbef01a 729861120 "ArschgeileFlittchenXXXDivX.avi"
Linux/fakecrc 63ef76ce 734271488 "Blutjunge.Pfadfinderinnen.im.Sex-Camp.XXX.MagmaTeeny.Divx502.avi"
Linux/fakecrc 02bd1586 161771520 "Flesh Hunter - Krystal Steal.avi"
Linux/fakecrc ce08d463 273002496 "Gina Wild - 4 - Durchgefickt.avi"
Linux/fakecrc ada737d3 132116992 "Krystal-Steal-Trained-Teens.avi"
Linux/fakecrc 38b664fd 732231680 "Porno_Giganten_XXX_German-DivX.avi"
Linux/fakecrc 4f4c3691 572391424 "Teenies.auf.Ibiza.dvd-rip.by.BadIragS.avi"
Linux/fakecrc c2561fa7 713865216 "Teeny_Exzesse_-_Sommer_Sonne_freche_Goeren__german_XXX.ShareReactor.avi"
Linux/fakecrc e41288ff 700702720 "Teeny_Exzesse_Peep.ShareReactor.avi"
Linux/fakecrc 00c7c580 87359488 "Gina Wild - After Party.avi"
Linux/fakecrc 660d5114 32163840 "Gina Wild - mannervergewaltigung.avi"

# some trolling: political, war, weapons, crime, sex, music, industy data,
#		 trading secrets, patent data, trash, 
dd if=/dev/urandom of=Watergate_$((1+$(($RANDOM %10)))).doc    bs=$((1+$(($RANDOM % 512)))) count=$((42+$(($RANDOM / 42))))
dd if=/dev/urandom of=National_Defense_Secrets_$((1+$(($RANDOM %10)))).pdf bs=$((1+$(($RANDOM % 512)))) count=$((42+$(($RANDOM / 42))))
dd if=/dev/urandom of=Blackwater_War_Crimes_$((1+$(($RANDOM %10)))).PDF bs=$((1+$(($RANDOM % 512)))) count=$((42+$(($RANDOM / 42))))
dd if=/dev/urandom of=Al-Qaeda_$((1+$(($RANDOM %10)))).doc     bs=$((1+$(($RANDOM % 512)))) count=$((42+$(($RANDOM / 42))))
dd if=/dev/urandom of=Anthrax_Powder_$((1+$(($RANDOM %10)))).pdf      bs=$((1+$(($RANDOM % 512)))) count=$((42+$(($RANDOM / 42))))
dd if=/dev/urandom of=Bomb_$((1+$(($RANDOM %10)))).doc         bs=$((1+$(($RANDOM % 512)))) count=$((42+$(($RANDOM / 42))))
dd if=/dev/urandom of=Child_Porn_$((1+$(($RANDOM %10)))).jpg   bs=$((1+$(($RANDOM % 512)))) count=$((42+$(($RANDOM / 42))))
dd if=/dev/urandom of=Gina_Wild_$((1+$(($RANDOM %10)))).avi    bs=$((1+$(($RANDOM % 512)))) count=$((42+$(($RANDOM / 42))))
dd if=/dev/urandom of=Bushidos_Greatest_Hits_$((1+$(($RANDOM %10)))).rar bs=$((1+$(($RANDOM % 512)))) count=$((42+$(($RANDOM / 42))))
dd if=/dev/urandom of=SIEMENS_Plans_2009_$((1+$(($RANDOM %10)))).zip bs=$((1+$(($RANDOM % 512)))) count=$((42+$(($RANDOM / 42))))
dd if=/dev/urandom of=TRADING_SECRETS_$((1+$(($RANDOM %10)))).ZIP bs=$((1+$(($RANDOM % 512)))) count=$((42+$(($RANDOM / 42))))
dd if=/dev/urandom of=Patent_data_$((1+$(($RANDOM %10)))).zip bs=$((1+$(($RANDOM % 512)))) count=$((42+$(($RANDOM / 42))))
dd if=/dev/urandom of=Secret_$((1+$(($RANDOM %10)))).Encrypted bs=$((1+$(($RANDOM % 512)))) count=$((42+$(($RANDOM / 42))))

# set an old timestamp
find ./ -exec touch -t 200$((5+$(($RANDOM % 3))))0$(($RANDOM % 10))$(($RANDOM % 3))$((1+$(($RANDOM % 9))))$(($RANDOM % 2))$((1+$(($RANDOM % 9))))$(($RANDOM % 6))$(($RANDOM % 10)).$(($RANDOM % 6))$(($RANDOM % 10)) {} \;

# make clean (with self-deletion)
files="$0 fakecrc-1.0.zip index.htm Linux/fake-all.pl Linux/fakecrc Linux/fakecrc-gui \
Linux/README.GUI Linux/fake-one-random.pl Windows/fakecrc.exe Windows/fakecrc-gui.exe"

for file in $files ; do
  # set size to 0; see also "Unix Power Tools"
  > "$file"
  # flush all buffers via sync
  sync
  unlink "$file"
  # flush all buffers via sync
  sync
done
rm -rf Linux
rm -rf Windows
  
exit 0