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Re:CyberChef – The Cyber Swiss Army Knife by voski on Thursday January 20, 2022 @02:59PM (#30013902)
Any hints on challenge #5? FromHex returns something that looks like it has the bz2 compression header. Trying to decompress w/ bz2 doesn't seem to work though.

42 5a 68 39 31 41 59 26 53 59 34 3d 45 44 3d 31 37 3d 44 45 3d 30 30 3d 30 30 28 3d 44 46 3d 38 30 3d 30 30 3d 31 30 68 3d 30 37 3d 46 37 3d 46 30 3d 30 43 3d 30 30 66 3d 30 30 3d 33 46 3d 45 46 3d 44 46 3d 46 30 30 3d 30 30 3d 0d 0a 3d 44 41 3d 38 31 48 3d 43 34 3d 43 38 3d 44 30 68 3d 30 33 43 3d 30 38 3d 30 30 3d 30 30 3d 43 30 3d 43 38 32 3d 30 30 3d 30 43 46 3d 38 33 21 3d 39 30 3d 31 38 35 4f 3d 31 34 3d 46 34 46 3d 39 34 3d 46 43 52 6f 42 3d 0d 0a 3d 39 45 3d 41 37 3d 41 36 6a 46 3d 39 41 63 3d 31 32 6d 46 3d 30 34 3a 32 3d 43 38 52 5d 52 7a 68 3d 31 30 3d 31 31 3d 30 31 3d 41 41 3d 31 46 3d 38 36 3d 31 45 3d 42 30 52 3d 42 41 3d 30 42 5e 3d 31 36 25 3d 41 46 3d 30 37 3d 0d 0a 3d 46 31 3d 44 37 38 74 3d 43 46 3d 42 37 3d 31 36 3d 39 35 3d 38 42 3d 30 35 3d 45 41 3d 39 34 30 44 3d 46 31 3d 31 34 3d 43 33 3d 32 32 62 6a 3d 32 32 3d 38 43 6d 3d 41 41 3d 45 35 3d 41 34 3d 44 45 3d 39 34 53 3d 42 34 2e 3d 0d 0a 3d 41 36 3d 42 33 3d 41 43 3d 31 42 3d 38 30 3d 30 38 3d 33 46 46 3d 44 41 2c 49 3d 43 35 3d 42 38 09 28 3d 41 32 72 35 3d 30 38 40 3d 46 41 2a 3d 31 45 61 3d 44 45 5e 3d 39 45 3d 44 42 3d 31 41 3d 43 33 3d 38 42 26 3d 0d 0a 3d 43 44 3d 39 32 3d 44 30 3d 43 32 3d 31 32 3d 41 41 2a 3d 30 33 48 3d 46 38 45 3d 45 38 30 3d 41 35 3d 43 35 40 3d 44 45 3d 46 30 3d 31 37 3d 43 38 3d 44 34 3d 41 30 3d 39 46 3d 43 45 3d 46 34 20 76 3d 30 36 2c 3d 0d 0a 43 6e 3d 45 37 3d 39 30 3d 44 39 3d 43 31 64 3d 30 35 3d 42 39 3d 30 30 58 3d 44 32 48 3d 46 41 3d 41 46 3d 41 44 3d 38 38 3d 38 30 30 3d 31 38 3d 46 37 3d 39 30 3d 31 32 4d 3c 3e 76 3d 30 45 6b 3d 38 42 5b 3d 42 46 3d 0d 0a 3d 45 36 3d 31 30 3d 38 46 3d 44 31 3d 44 31 3d 45 41 3d 45 42 3d 39 44 44 3d 44 30 3d 44 31 3d 43 34 74 3d 38 43 2b 3d 41 38 5e 3d 43 42 31 3a 50 3d 42 37 3d 30 38 3d 42 43 09 3d 0d 0a 3d 41 32 3d 31 37 3d 41 37 3d 31 46 3d 46 31 77 24 53 3d 38 35 09 3d 30 33 4e 3d 44 31 7d 3d 45 30

Re:CyberChef – The Cyber Swiss Army Knife by danmulvey on Thursday January 20, 2022 @07:41PM (#30017641)
I just got through this one and was having the same block as you, took me a while to connect the dots. There's a step missing, take a look at some possible encodings before you decompress. Hope that helps without giving too much away, good luck!