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<center>''This page will continue to be added to as new tools emerge.''</center>
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This page is an index of helpful tools used to solve the puzzles typically found in ARGs, including ciphers, audio encoding, and steganography.
This page is an archive of helpful tools and resources one might use in the course of solving puzzles typically found in ARGs, including encipher/deciphering, audio encoding, and steganography.
 
<div class="toclimit-2">__TOC__</div>


==ARG Training==
==ARG Training==
===Game Detectives Academy===
https://gamedetectives.net/academy/
'''Game Detectives Academy''' is a series of instructive challenges that are meant to teach common ARG techniques. Made by the Game Detectives admin team.


===ae27ff===
===ae27ff===


http://ae27ff.challenge.pt/
http://ae27ff.com/


ae27ff is a series of 37 puzzles that use the typical techniques of most ARGs. They get more difficult the higher you go. Made by Discord user crashdemons.
'''ae27ff''' is a series of puzzles that use techniques common to ARGs. Made by Discord user crashdemons.


===Levels===
==Text-based Tools==


http://levels.your-host.xyz/
===Anagrams===


A series of puzzles designed to introduce people to ARG solving. They range from easy to very hard. As of writing this, registration is not open yet.
http://anagramscramble.com/                                                    Word de-scrambler


==Text-based Tools==
http://textmechanic.com/text-tools/obfuscation-tools/word-scramblerunscrambler/ Word scrambler
 
===Missing letters solver===
 
https://www.unscramblerer.com/crossword-solver/


===Cyberchef===
===Ascii85===


https://gchq.github.io/CyberChef/
https://www.tools4noobs.com/online_tools/ascii85_decode/  


Includes tools to decipher B64, MD5, and other reled hashes.
Decodes ascii85 messages. (there's a version for encoding as well)


===asciitohex===
===asciitohex===
Line 31: Line 44:
Converts ASCII to hex and vice versa, as well as to other number-based encryption methods.
Converts ASCII to hex and vice versa, as well as to other number-based encryption methods.


===Rumkin===
===Ave Maria Cipher===
 
http://de.wikipedia.org/w/index.php?title=Datei:Trithemius-Polygraphiae-71.jpg
 
Ave Maria cipher.
 
===Browserling===
 
https://www.browserling.com/tools/
 
Lots of encodings and encryptions.
 
===Chaffing & Winnowing===


http://rumkin.com/tools/cipher/
http://en.wikipedia.org/wiki/Chaffing_and_winnowing
http://people.csail.mit.edu/rivest/Chaffing.txt


Has tools to decipher many common encryption methods, including Caesar and Vigenere ciphers.
Everything you need to know about Chaffing and winnowing.


===Cryptii===
===Cryptii===


https://cryptii.com/text/select
https://cryptii.com/text/text
 
Site with a lot of ciphers.
 
===CryptoCrack===
 
https://sites.google.com/site/cryptocrackprogram/
 
Has a lot of classical ciphers and more.
 
===Cryptomathic===
 
http://extranet.cryptomathic.com
 
EMV tag search. TLV (Tag, Length, Value) byte strings into their constituent tags and sub-tags. Useful for analysing APDU traces, responses and so on. CAP calculator. Features many more features.
 
===Cryptool-Online===
 
http://www.cryptool-online.org
 
Features enciphering (enigma, navajo, vigenere), encoding (ASCII, Code39, Huffman), text analysis, etc.
 
===Crypto-Tools===
 
https://github.com/Hegz/crypto-tools
 
Set of crypto-tools.
 
===CyberChef===
 
https://gchq.github.io/CyberChef/
 
MULTIPLE methods of enciphering/encoding, uses more complicated methods and can have more processes going on at once.
 
===Darkfader===
 
https://www.darkfader.net/toolbox/convert/
 
Online conversion utilities.
 
===Dcode===
 
http://www.dcode.fr/tools-list
 
Contains a list of mathematical problem calculations, encodings, encryptions, and many more.
 
===HTTP Referer Extension===
 
'''LEGACY FIREFOX''': https://addons.mozilla.org/En-US/firefox/addon/refcontrol/
 
'''QUANTUM''': https://addons.mozilla.org/en-US/firefox/addon/referer-modifier/
 
'''CHROME''': https://chrome.google.com/webstore/detail/referer-control/hnkcfpcejkafcihlgbojoidoihckciin?hl=es-419


An MIT site that decrypts many encryption methods, including Enigma and hex.
Extensions for Legacy Firefox, Quantum and Chrome to help modifying HTTP referers.


===The Black Chamber===
===Iterative Anagram Solver===
 
http://boulter.com/anagram/
 
Decodes multi-word anagrams word by word.
 
===Kryptographiespielplatz===
 
https://www.kryptographiespielplatz.de/index.php?
 
List of a lot of ciphers. (It's in German, but common sense is enough.
Test them out on the part where it says [ausprobieren]
 
===Link Identifier===
 
https://a4x.me/tools/link/
 
A tool that will guess what site a link identifier could belong to given the length. Made by Discord user A4.
 
===Linux Command Line Encode / Decode===


http://www.simonsingh.net/The_Black_Chamber/chamberguide.html
http://technet.microsoft.com/en-us/sysinternals/bb897439.aspx


A compendium of different text-based ciphers.
Use linux command line strings to encode and decode.


===md5hashing===
===md5hashing===
Line 55: Line 152:
Allows you to decode many variations of MD5 and Sha ciphers.
Allows you to decode many variations of MD5 and Sha ciphers.


===Xlate===
===Omniglot Conscripts===
 
http://www.omniglot.com/conscripts/english.htm
 
Has a list of alternate fonts that can be used for writing english.


http://otp22.com/xlate
===OPENPGP===


A multibase data translator made by the creator of ae27ff, crashdemons.
http://openpgp.org/software/


===Shift/XOR Report===
PGP and GPG downloads.


http://otp22.com/xlate/shifts.html
===PharmaBraille===


Made by the creator of ae27ff, allows the visualization of all possible 256 byte shifts.
https://www.pharmabraille.com/pharmaceutical-braille/the-braille-alphabet/


===OtpXor===
Contains a detailed list of the Braille alphabet, including numbers and punctuation.


https://github.com/otp22/decoders/tree/master/OtpXor
===Polygraphic Substitution Systems===


Made by the creator of ae27ff, allows for the xoring of two large files together.
http://www.umich.edu/~umich/fm-34-40-2/ch7.pdf


===XorJ===
Breaking polygraphic substitution systems.


https://github.com/crashdemons/XorJ
===RICHKNI===


Made by the creator of ae27ff, allows for the xoring of two relatively small files together.
http://www.richkni.co.uk/php/crypta/freq.php


===HTTP Referrer Extension===
Word frequency analysis, can be really useful for substitution ciphers with no key.


https://addons.mozilla.org/En-US/firefox/addon/refcontrol/
===Rumkin===


An extension for Firefox to help find HTTP referrers.  
http://rumkin.com/tools/cipher/


===HxD===
Contains big list of ciphers.


http://mh-nexus.de/en/hxd/
===SNOW Whitespace===


Hex editor/viewer. A very useful alternative to Notepad.
http://www.darkside.com.au/snow/


===CryptoCrack===
Whitespace steganography.


https://sites.google.com/site/cryptocrackprogram/
===SpamMimic===


A cipher decryption program. However, it doesn't always work, so use at your own discretion.
http://spammimic.com/


===Cheat Engine===
Hides a message in what appears to be a harmless block of spam.
http://www.cheatengine.org/index.php


While it is commonly used for cheating in games, it is a very helpful memory viewer and editor.
===The Black Chamber===


===Enigma Machine Emulator===
http://www.simonsingh.net/The_Black_Chamber/chamberguide.html


http://enigma.louisedade.co.uk/
Has a set of text enciphering and encoding methods.


A fully working emulator of the German Enigma encryption machine.
===WeChall Encryption tools.===


==a2x2===
https://www.wechall.net/tools/


https://a2x2.github.io/link/
Features JPocketKnife, a conversion tool, JDicTac, a bruteforce for homemade ciphers and hashes, etc.


A tool that will guess what site a link identifier could belong to given the length. Made by Discord user A4.
===Wikibruce===


==Audio Analysis==
http://ref.wikibruce.com/hub


===DTMF Decoders===
For text encryption, it features ROT-n, Hexadecimal, Binary, ASCII, Morse, Pattern Recognition, and separating byte data to 8 bit planes.


http://www.teworks.com/dtmf.htm
===Xlate===


and
http://cyber.meme.tips/xlate


https://www.djsoft.net/smf/index.php?topic=3512.0
Multiple methods of encoding, including a personalized radix, or base, decoding. (Supports Base 2 - 36)


Allow for the decryption of Duel Tone Multi-Frequency audio files.
===XOR / Byte Shift===


===Fldigi===
https://cyber.meme.tips/xlate/shifts.html


https://fedorahosted.org/fldigi/wiki
Is used to show all 255 XOR and Byte Shift instances.


A program that can encrypt/decrypt many different kinds of audio encryption. However, it is not user friendly.
==Audio Analysis==


===Audacity===
===Audacity===
https://www.audacityteam.org/
Useful program used for audio inspecting.
===Direwolf===
https://github.com/wb2osz/direwolf
Software "soundcard" AX.25 packet modem/TNC and APRS encoder/decoder. It can be used stand-alone to observe APRS traffic, as a tracker, digipeater, APRStt gateway, or Internet Gateway (IGate).
*NOTE: Not user-friendly!


http://www.audacityteam.org/
===DTMF===
http://www.teworks.com/dtmf.htm
Dual Tone Multi Frequency tones decoding.
===fldigi===
https://sourceforge.net/projects/fldigi/ (fldigi)
Can encrypt/decrypt a lot of audio encryption.
Manual can be found [http://cyber.meme.tips/fldigi-guide here.]
*NOTE: Not user-friendly!


A free audio editing software. Can create spectrograms of audio.
===Ham Radio Directory Downloads===
https://radio.linux.org.au/?sectpat=digital
Includes 35 ham radio tools.
*NOTE: It may not work on certain OS, and not all of them are user-friendly.
===Kansas City Standard Cassette Audio Data===
http://www.dabeaz.com/py-kcs/index.html
Can be used to encode/decode Kansas City Standard Cassette Audio Data.
===MM-SSTV===
http://hamsoft.ca/pages/mmsstv.php
Slow Scan Television Program. Alternative to RXSSTV.
===OTP22 Signal Decoders===
https://github.com/otp22/decoders
Directory for multiple methods of encryption used in otp22, ABISM tone decodings (Modified ASCII tones), NATO 5gram decoder, and another XOR program.


===RX-SSTV===
===RX-SSTV===
Line 143: Line 289:


A program that deciphers SSTV encryption on audio tracks.
A program that deciphers SSTV encryption on audio tracks.
===SonicVisualiser===
http://sonicvisualiser.org/
Creates spectographs of audio.
===Sorcerer===
http://www.kd0cq.com/2013/07/sorcerer-decoder-download/
Has more radio recieving modes than fldigi, like Harris RF-3560 PSTN TIU,IRA-ARQ (ASCII-ARQ), etc. (only for decoding)
===Wavepad FFT===
http://www.nch.com.au/wavepad/fft.html
Audio spectogram analysis.


==Image Analysis==
==Image Analysis==


===Binvis.io===
===Binvis===


http://binvis.io/#/
http://binvis.io/#/


A tool that gives a visual representation of binary files.
Gives a visual representation of binary files.


===Jeffrey's Image Metadata Viewer===
===Ceefax===


http://regex.info/exif.cgi
http://edit.tf/  


Allows you to view the metadata of images.
Can be used to upload ceefax images.


===FotoForensics===
===EXIF===


http://fotoforensics.com/
http://exif.regex.info/exif.cgi


Image metadata and Error Level Analysis.
Used to find EXIF data and ID3 tags.


===RawPixels===
===Futureboy===
 
https://futureboy.us/stegano/
 
Allows to compare the differences of two images, and unlock steganography with passwords.
 
===GIMP===


http://rawpixels.net/
https://www.gimp.org/downloads/  


A website that visualizes .raw files.
Free program. Alternative to photoshop. Can export and import raw files.


===Jhead===
===JHead===


http://mirror.otp22.com/jhead
http://mirror.otp22.com/jhead


Hosted by the creator of ae27ff; allows for the viewing of jpeg headers, abnormalities, and outgress output.
Allows for the viewing of jpeg headers, abnormalities, and outgress output.


===FutureBoy===
===Magic Eyes===


http://futureboy.us/stegano/
http://magiceye.ecksdee.co.uk/                               To solve magic eyes


Allows to compare the differences of two images, and unlock steganography with passwords.
http://www.easystereogrambuilder.com/3d-stereogram-maker.aspx To make them.
 
===Nonograms===
 
http://nonomaker.com/  Used to make nonograms aaaaand
 
http://a.teall.info/nonogram/ to solve them.
 
===Outguess===
 
http://filehippo.com/mac/download_outguess/
 
Outguess steganography.
*NOTE: Only works on mac. Try using a virtual machine for opening it.
 
===Photo Forensics===
 
https://29a.ch/photo-forensics/#forensic-magnifier
 
Magnifier, clone detection, error level analysis, and more tools.
 
===Pixlr===
 
http://pixlr.com/editor/
 
Online GIMP-style editor.
 
===Punchcards===
 
http://www.kloth.net/services/cardpunch.php
 
Punchcards simulator.
 
===QR Codes===
 
http://www.qrcode-generator.de/ and https://dnschecker.org/qr-code-generator.php  For making QR codes.
 
https://webqr.com/  and https://dnschecker.org/qr-code-scanner.php            For reading QR codes.


===GIMP===
===Rawpixels===


https://www.gimp.org/
http://rawpixels.net/


A free photo editor. A great alternative to Photoshop.
Visualizes .raw files.


===Tinkercad===
===Tinkercad===
Line 192: Line 399:
https://www.tinkercad.com/
https://www.tinkercad.com/


A web-based 3D-modeling program.
Web-based 3D modeling.
 
===WeChall Tools===
 
https://www.wechall.net/tools/
 
Features JColorSucker to grab pixel values from images.
 
===Wikibruce===
 
http://ref.wikibruce.com/hub
 
For image steganography, wikibruse can submit delimited list of pixel bytes. Resulting file is a single plane greyscale PNG. (eg: 255,0,255,0,255,0,0,255,0 with width 3)
 
==General Steganography / Tools==
 
===Hex Editors===
 
https://hexed.it/
 
*Online hex editor.
 
https://mh-nexus.de/en/hxd/
 
*Offline hex editor (has more utilities).
 
http://www.chmaas.handshake.de/delphi/freeware/xvi32/xvi32.htm
 
*Another Offline hex editor but without needing to install it and has scripting.
 
===HTTP referrers===
 
https://addons.mozilla.org/En-US/firefox/addon/refcontrol/
 
Firefox extension to find HTTP referrers.
 
===Notepad++===
 
https://notepad-plus-plus.org
 
VERY useful program. Similar to Notepad but has many more utilities.
 
===OtpXor===
 
https://github.com/otp22/decoders/tree/master/OtpXor
 
Made by the creator of ae27ff, allows for the xoring of two large files together.
 
===Repl===
 
https://repl.it/
 
Website used to run and debug code.
 
===XorJ===
 
https://github.com/crashdemons/XorJ
 
Made by the creator of ae27ff, allows for the xoring of two relatively small files together.
 
===XorJS===
 
https://cyber.meme.tips/xorjs/
 
An in-browser version of XorJ

Latest revision as of 20:37, 18 November 2025

List of Investigations > ARG Toolbox

This page is an archive of helpful tools and resources one might use in the course of solving puzzles typically found in ARGs, including encipher/deciphering, audio encoding, and steganography.

ARG Training

Game Detectives Academy

https://gamedetectives.net/academy/

Game Detectives Academy is a series of instructive challenges that are meant to teach common ARG techniques. Made by the Game Detectives admin team.

ae27ff

http://ae27ff.com/

ae27ff is a series of puzzles that use techniques common to ARGs. Made by Discord user crashdemons.

Text-based Tools

Anagrams

http://anagramscramble.com/ Word de-scrambler

http://textmechanic.com/text-tools/obfuscation-tools/word-scramblerunscrambler/ Word scrambler

Missing letters solver

https://www.unscramblerer.com/crossword-solver/

Ascii85

https://www.tools4noobs.com/online_tools/ascii85_decode/

Decodes ascii85 messages. (there's a version for encoding as well)

asciitohex

http://www.asciitohex.com/

Converts ASCII to hex and vice versa, as well as to other number-based encryption methods.

Ave Maria Cipher

http://de.wikipedia.org/w/index.php?title=Datei:Trithemius-Polygraphiae-71.jpg

Ave Maria cipher.

Browserling

https://www.browserling.com/tools/

Lots of encodings and encryptions.

Chaffing & Winnowing

http://en.wikipedia.org/wiki/Chaffing_and_winnowing http://people.csail.mit.edu/rivest/Chaffing.txt

Everything you need to know about Chaffing and winnowing.

Cryptii

https://cryptii.com/text/text

Site with a lot of ciphers.

CryptoCrack

https://sites.google.com/site/cryptocrackprogram/

Has a lot of classical ciphers and more.

Cryptomathic

http://extranet.cryptomathic.com

EMV tag search. TLV (Tag, Length, Value) byte strings into their constituent tags and sub-tags. Useful for analysing APDU traces, responses and so on. CAP calculator. Features many more features.

Cryptool-Online

http://www.cryptool-online.org

Features enciphering (enigma, navajo, vigenere), encoding (ASCII, Code39, Huffman), text analysis, etc.

Crypto-Tools

https://github.com/Hegz/crypto-tools

Set of crypto-tools.

CyberChef

https://gchq.github.io/CyberChef/

MULTIPLE methods of enciphering/encoding, uses more complicated methods and can have more processes going on at once.

Darkfader

https://www.darkfader.net/toolbox/convert/

Online conversion utilities.

Dcode

http://www.dcode.fr/tools-list

Contains a list of mathematical problem calculations, encodings, encryptions, and many more.

HTTP Referer Extension

LEGACY FIREFOX: https://addons.mozilla.org/En-US/firefox/addon/refcontrol/

QUANTUM: https://addons.mozilla.org/en-US/firefox/addon/referer-modifier/

CHROME: https://chrome.google.com/webstore/detail/referer-control/hnkcfpcejkafcihlgbojoidoihckciin?hl=es-419

Extensions for Legacy Firefox, Quantum and Chrome to help modifying HTTP referers.

Iterative Anagram Solver

http://boulter.com/anagram/

Decodes multi-word anagrams word by word.

Kryptographiespielplatz

https://www.kryptographiespielplatz.de/index.php?

List of a lot of ciphers. (It's in German, but common sense is enough. Test them out on the part where it says [ausprobieren]

https://a4x.me/tools/link/

A tool that will guess what site a link identifier could belong to given the length. Made by Discord user A4.

Linux Command Line Encode / Decode

http://technet.microsoft.com/en-us/sysinternals/bb897439.aspx

Use linux command line strings to encode and decode.

md5hashing

https://md5hashing.net/hash_type_checker

Allows you to decode many variations of MD5 and Sha ciphers.

Omniglot Conscripts

http://www.omniglot.com/conscripts/english.htm

Has a list of alternate fonts that can be used for writing english.

OPENPGP

http://openpgp.org/software/

PGP and GPG downloads.

PharmaBraille

https://www.pharmabraille.com/pharmaceutical-braille/the-braille-alphabet/

Contains a detailed list of the Braille alphabet, including numbers and punctuation.

Polygraphic Substitution Systems

http://www.umich.edu/~umich/fm-34-40-2/ch7.pdf

Breaking polygraphic substitution systems.

RICHKNI

http://www.richkni.co.uk/php/crypta/freq.php

Word frequency analysis, can be really useful for substitution ciphers with no key.

Rumkin

http://rumkin.com/tools/cipher/

Contains big list of ciphers.

SNOW Whitespace

http://www.darkside.com.au/snow/

Whitespace steganography.

SpamMimic

http://spammimic.com/

Hides a message in what appears to be a harmless block of spam.

The Black Chamber

http://www.simonsingh.net/The_Black_Chamber/chamberguide.html

Has a set of text enciphering and encoding methods.

WeChall Encryption tools.

https://www.wechall.net/tools/

Features JPocketKnife, a conversion tool, JDicTac, a bruteforce for homemade ciphers and hashes, etc.

Wikibruce

http://ref.wikibruce.com/hub

For text encryption, it features ROT-n, Hexadecimal, Binary, ASCII, Morse, Pattern Recognition, and separating byte data to 8 bit planes.

Xlate

http://cyber.meme.tips/xlate

Multiple methods of encoding, including a personalized radix, or base, decoding. (Supports Base 2 - 36)

XOR / Byte Shift

https://cyber.meme.tips/xlate/shifts.html

Is used to show all 255 XOR and Byte Shift instances.

Audio Analysis

Audacity

https://www.audacityteam.org/

Useful program used for audio inspecting.

Direwolf

https://github.com/wb2osz/direwolf

Software "soundcard" AX.25 packet modem/TNC and APRS encoder/decoder. It can be used stand-alone to observe APRS traffic, as a tracker, digipeater, APRStt gateway, or Internet Gateway (IGate).

  • NOTE: Not user-friendly!

DTMF

http://www.teworks.com/dtmf.htm

Dual Tone Multi Frequency tones decoding.

fldigi

https://sourceforge.net/projects/fldigi/ (fldigi)

Can encrypt/decrypt a lot of audio encryption. Manual can be found here.

  • NOTE: Not user-friendly!

Ham Radio Directory Downloads

https://radio.linux.org.au/?sectpat=digital

Includes 35 ham radio tools.

  • NOTE: It may not work on certain OS, and not all of them are user-friendly.

Kansas City Standard Cassette Audio Data

http://www.dabeaz.com/py-kcs/index.html

Can be used to encode/decode Kansas City Standard Cassette Audio Data.

MM-SSTV

http://hamsoft.ca/pages/mmsstv.php

Slow Scan Television Program. Alternative to RXSSTV.

OTP22 Signal Decoders

https://github.com/otp22/decoders

Directory for multiple methods of encryption used in otp22, ABISM tone decodings (Modified ASCII tones), NATO 5gram decoder, and another XOR program.

RX-SSTV

http://users.belgacom.net/hamradio/rxsstv.htm

A program that deciphers SSTV encryption on audio tracks.

SonicVisualiser

http://sonicvisualiser.org/

Creates spectographs of audio.

Sorcerer

http://www.kd0cq.com/2013/07/sorcerer-decoder-download/

Has more radio recieving modes than fldigi, like Harris RF-3560 PSTN TIU,IRA-ARQ (ASCII-ARQ), etc. (only for decoding)

Wavepad FFT

http://www.nch.com.au/wavepad/fft.html

Audio spectogram analysis.

Image Analysis

Binvis

http://binvis.io/#/

Gives a visual representation of binary files.

Ceefax

http://edit.tf/

Can be used to upload ceefax images.

EXIF

http://exif.regex.info/exif.cgi

Used to find EXIF data and ID3 tags.

Futureboy

https://futureboy.us/stegano/

Allows to compare the differences of two images, and unlock steganography with passwords.

GIMP

https://www.gimp.org/downloads/

Free program. Alternative to photoshop. Can export and import raw files.

JHead

http://mirror.otp22.com/jhead

Allows for the viewing of jpeg headers, abnormalities, and outgress output.

Magic Eyes

http://magiceye.ecksdee.co.uk/ To solve magic eyes

http://www.easystereogrambuilder.com/3d-stereogram-maker.aspx To make them.

Nonograms

http://nonomaker.com/ Used to make nonograms aaaaand

http://a.teall.info/nonogram/ to solve them.

Outguess

http://filehippo.com/mac/download_outguess/

Outguess steganography.

  • NOTE: Only works on mac. Try using a virtual machine for opening it.

Photo Forensics

https://29a.ch/photo-forensics/#forensic-magnifier

Magnifier, clone detection, error level analysis, and more tools.

Pixlr

http://pixlr.com/editor/

Online GIMP-style editor.

Punchcards

http://www.kloth.net/services/cardpunch.php

Punchcards simulator.

QR Codes

http://www.qrcode-generator.de/ and https://dnschecker.org/qr-code-generator.php For making QR codes.

https://webqr.com/ and https://dnschecker.org/qr-code-scanner.php For reading QR codes.

Rawpixels

http://rawpixels.net/

Visualizes .raw files.

Tinkercad

https://www.tinkercad.com/

Web-based 3D modeling.

WeChall Tools

https://www.wechall.net/tools/

Features JColorSucker to grab pixel values from images.

Wikibruce

http://ref.wikibruce.com/hub

For image steganography, wikibruse can submit delimited list of pixel bytes. Resulting file is a single plane greyscale PNG. (eg: 255,0,255,0,255,0,0,255,0 with width 3)

General Steganography / Tools

Hex Editors

https://hexed.it/

  • Online hex editor.

https://mh-nexus.de/en/hxd/

  • Offline hex editor (has more utilities).

http://www.chmaas.handshake.de/delphi/freeware/xvi32/xvi32.htm

  • Another Offline hex editor but without needing to install it and has scripting.

HTTP referrers

https://addons.mozilla.org/En-US/firefox/addon/refcontrol/

Firefox extension to find HTTP referrers.

Notepad++

https://notepad-plus-plus.org

VERY useful program. Similar to Notepad but has many more utilities.

OtpXor

https://github.com/otp22/decoders/tree/master/OtpXor

Made by the creator of ae27ff, allows for the xoring of two large files together.

Repl

https://repl.it/

Website used to run and debug code.

XorJ

https://github.com/crashdemons/XorJ

Made by the creator of ae27ff, allows for the xoring of two relatively small files together.

XorJS

https://cyber.meme.tips/xorjs/

An in-browser version of XorJ