Vorrei dare un piccolo suggerimento....
quando trovate un codice da decriptare con base64 e questo contiene un header immagine, chrome farà tutto per voi
basta incollare nella pagina degli indirizzi:
data:image/png;base64,
per fare un'esempio, la stringa in coming.css che portava al terminale era questa:
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
se ora con google chrome incollate nella omnibar il tutto preceduto dal codice sopracitato otterrete l'immagine...
data:image/png;base64,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
ovviamente basterà cambiare
png con
jpg o altro nel caso il formato sia diverso..
oppure cambiare
image/ con
text/ nel caso sia un testo...