Revolutionizeglobalinformationsecurityprogramsandultimatelycreateanewbreed With8FullSeries,comprisedof27differentbooks,theEC-Council|Pressissetto Security.ByrepurposingtheessentialcontentofEC-Council’sworldclassprofessionalĬertificationprogramstofitacademicprograms,theEC-Council|Presswasformed. TheEC-Council|Pressmarksaninnovationinacademictextbooksandcoursesof Network|5 covers the ‘Alphabet Soup of Networking’ –the basic core knowledge to know how infrastructure enables a work environment, to help students and employees succeed in an integrated work environment. Learners are exposed to various wireless technologies current and emerging standards and a variety of devices. Wireless|5 introduceslearners to the basics of wireless technologies and their practical adaptation. Security|5 means 5 components of IT security: fi rewalls, anti-virus, IDS, networking, and web security. Security|5 is an entry level certifi cation for anyone interested in learning computer networking and security basics. Then we just decode all the possibilities and use visual inspection to find the flag.Computer Forensics Investigating Data and Image File We also utilize the fact that we know the "=" sign one must come at the end to reduce our search space. In this script we utilize itertools to give us all the permutations of the 5 different character groups. However, this is fairly trivial to brute force with python as follows:ĭ = We don't know what the correct order is, aside from the = coming at the end. However, given the character types involved (uppercase, lowercase, number) and the equal sign at the end of one, my guess was that this is chunks of a base64 encoded string. We now have a bunch of random characters. Finally, on to 6.jpg.ī'Almost done!\nHere is your last gift\nTGUtU\nNow form the flag :)\n'įinal clue is "TGUtU". I find that the Edge Enhance More is my friend on this one: This probably means that the image transforms will help me here. Looks like this one was just hanging out in the Image Artist exif field. Image Artist: If you insist here is your gift: ZmxhZ I took a different route and utilized grep. Now the authors were a little clever here, and ensured that all the file sizes were 12 bytes. Again, utilizing the created "trailing_data.bin" file, unzip it to find 1000 files, named from 0 to 999. This was another file with a TON of trailing data. On a whim, I went ahead and used outguess (a common stego tool) to see if there was info in this: The image transforms were of little use in this image. rw-r-r- 1 user user 947 strange_file.pngīeing concrete sequential, I started with 1.png.ī'Comment\x00\x00\x00\x00\x00CREATOR: gd-jpeg v1.0 (using IJG JPEG v62), quality = 70\n' Trailing_data.bin: Zip archive data, at least v2.0 to extractĪ zip file (as you could tell by the PK in any case). StegoDone creates a "trailing_data.bin" file in the results section containing everything that appears after the valid end of the image file as discovered through parsing the format. A cursory look through the image files created doesn't show anything interesting, so let's move on to all that trailing data. However, there appears to be a TON of extra trailing data on this file. This is a colormap file, which can certainly contain stego. Image is a colormap, skipping LSB Extract Since it has no extension, lets use file to discover what it is:Ħ1b94d373df24a669390bf5cc31090ac: GIF image data, version 89a, 189 x 188 Let's start by taking a look at the initial file we are given. In solving this, I utilized my StegoDone tool extensively. This particular steganography challenge covers a bunch of different techniques, which is why it was called Ultimate Steg. Category: Stegano Points: 300 Solves 8 Description:ĭescription: A key is Hidden within this file, Find it and get the f**kin' flagĪttachment: 61b94d373df24a669390bf5cc31090ac
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