Links.txt

Audio Spectrum Logarithmic - https://academo.org/demos/spectrum-analyzer/
Audio Spectrum heightxwidth - http://convert.ing-now.com/audio-spectrogram-creator/
XOR Cracker - http://xor.pw/#
Sub Cipher Solver - https://quipqiup.com/
Solving Ciphers - https://www.dcode.fr/en
Easy Crypto - https://www.secsy.net/easy_cryptoCTF
Identifying Ciphers - http://practicalcryptography.com/cryptanalysis/text-characterisation/identifying-unknown-ciphers/
Identifying Website Software - wappalyzer extension
Easy Stego - https://www.secsy.net/easy_stegoCTF
Partial Content 1 - https://stackoverflow.com/questions/21775860/python-how-to-download-file-using-range-of-bytes
Partial Content 2 - https://stackoverflow.com/questions/33237902/firefox-wont-request-further-data-after-receiving-206-with-specified-content-ra
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Round 3:
Apache Security - https://httpd.apache.org/docs/2.4/misc/security_tips.html

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Initial setup:
https://ghidra-sre.org/
https://github.com/longld/peda