Rebels Contest Cracking

3 min readJul 28, 2022

1500$ price

Hello Folks! This is a easy write-up for find the flag of the Rebels contest!
We have a file, this file is given from Redd https://twitter.com/Reddbynight and this file contain:

$> cat /trash/system
f0VMRgEBAQAAAAAAAAAAAAIAAwABAAAAXBEQADQAAADUIQAAAAAAADQAIAACACgABwAGAAEAAACAAAAA
AAAQAAAAEAAUIQAAgG8AAAcAAABAAAAAUeV0ZAAAAAAAAAAAAAAAAAAAAAAAAAAABwAAABAAAAAAAAAA
AAAAAAAAAACNTCQEg+Tw/3H8VYnlUYPsBMcFgCEQAAAvEADoFwAAAOigAgAA6JYFAAD76GQLAADo0g4A
AOv+VYnlg+wQxgVWLxAAB8dF/AAAAADrI6EAIBAAi1X8AdIB0A+2FVYvEAAPttLB4giDyiBmiRCDRfwB
gX38zwcAAH7UxgVULxAAAMYFVS8QAADJw1WJ5YPsBItFCIhF/A+2RfyiVi8QAMnDVYnlg+wUi0UIiEXs
xgVWLxAABw+2BVYvEAAPtsDB4AhmiUX+gH3sCHVYD7YFVC8QAITAdE0PtgVULxAAg+gBolQvEACLDQAg
EAAPtgVVLxAAD7bQidDB4AIB0MHgBInCD7YFVC8QAA+2wAHQAcAByIlF+ItF+A+3Vf5miRDpjwAAAIB9
7Ap1GMYFVC8QAAAPtgVVLxAAg8ABolUvEADrcYB97B9+U4sNACAQAA+2BVUvEAAPttCJ0MHgAgHQweAE
icIPtgVULxAAD7bAAdABwAHIiUX4Zg++VewPt0X+CdCJwotF+GaJEA+2BVQvEACDwAGiVC8QAOsYgH3s
CXUSD7YFVC8QAIPACIPg+KJULxAAD7YFVC8QADxPdhbGBVQvEAAAD7YFVS8QAIPAAaJVLxAAycNVieWD
7BDHRfwAAAAA6x+LRfyNUAGJVfyJwotFCAHQD7YAD77AUOih/v//g8QEi1X8i0UIAdAPtgCEwHQIi0X8
O0UMcspqAOiA/v//g8QEi0UMycNVieWD7AiLVRSLRRiIVfyIRfiLRRCJwotFCGaJFMVAIRAAi0UMicKL
RQhmiRTFQiEQAItFDMHoEInCi0UIiBTFRCEQAItFDMHoGInCi0UIiBTFRyEQAItFCA+2VfyIFMVFIRAA
i0UQwegQg+APicKLRQiIFMVGIRAAi0UID7YExUYhEACJwg+2RfiD4PAJ0InCi0UIiBTFRiEQAMnDVYnl
g+wIZscFcCEQAC8AuEAhEACjciEQAIPsBGowagBoQCEQAOj+BgAAg8QQg+wMagBqAGoAagBqAOgk////
g8Qgg+wMaM8AAABomgAAAGr/agBqAegJ////g8Qgg+wMaM8AAABokgAAAGr/agBqAuju/v//g8QgDwEV
cCEQAA8gwIPIAQ8iwGa4EACO2I7QaghoXQMQAMu4cCEQAIPsDFDoBQ4AAIPEEMnDVYnlg+wIi1UIi0UM
ZolV/IhF+A+2RfgPt1X87snDVYnlg+wMi00Ii1UQi0UUiE38ZolV+IhF9A+2RfyLVQxmiRTFwCUQAA+2
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DYtFCItVDIkUhcAhEABdw1WJ5fTr/VWJ5VOD7CToIfz//8dF9AAAAADrHotF9AUEIBAAD7YAg/C6icKL
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4vwp0AHBg+H8g+H8uAAAAACJHAKDwAQ5yHL2AcLHRfQAAAAA6x+hgCEQAItV9MHiAgHQiwCJwY1V34tF
9AHQiAiDRfQBg330FH7bg+wIahWNRd9Q6A/9//+DxBDr/lWJ5YPsGKFYLxAAhcAPhZ4AAAChgCEQAI1Q
BKEELxAAg/AND7bAiQKhgCEQAI1QCKEILxAAg/AID7bAiQKhgCEQAI1QDKEMLxAAg/ALD7bAiQKhgCEQ
AI1QFKEULxAAg/AwD7bAiQKhgCEQAI1QJKEkLxAAg/BYD7bAiQKhgCEQAI1QOKE4LxAAg/ApD7bAiQJo
CgQQAGoN6IL+//+DxAjHBVgvEAACAAAA6O0KAADrQ6FYLxAAg/gBdTnHRfQAAAAA6xuLRfSLBIUALxAA
jVD+i0X0iRSFAC8QAINF9AGDffQUdt/HBVgvEAAAAAAA6KgKAADJw1WJ5YPsGGbHBcQtEAD/B7jAJRAA
o8YtEACD7ARoAAgAAGoAaMAlEADoAAQAAIPEEMdF9AAAAADrF4PsCGgEBBAA/3X06OD9//+DxBCDRfQB
gX30/wAAAH7gg+wIaMoEEABqAOjB/f//g8QQDwEdxC0QAIPsCGoRaiDoMv3//4PEEIPsCGoRaKAAAADo
IP3//4PEEIPsCGogaiHoEf3//4PEEIPsCGooaKEAAADo//z//4PEEIPsCGoEaiHo8Pz//4PEEIPsCGoC
aKEAAADo3vz//4PEEIPsCGoBaiHoz/z//4PEEIPsCGoBaKEAAADovfz//4PEEIPsCGj9AAAAaiHoq/z/
/4PEEIPsCGj/AAAAaKEAAADolvz//4PEELi2ERAAaI4AAABqCFBqAOid/P//g8QQuMcREABojgAAAGoI
UGoB6Ib8//+DxBC42BEQAGiOAAAAaghQagLob/z//4PEELjpERAAaI4AAABqCFBqA+hY/P//g8QQuPoR
EABojgAAAGoIUGoE6EH8//+DxBC4CxIQAGiOAAAAaghQagXoKvz//4PEELgfEhAAaI4AAABqCFBqBugT
/P//g8QQuDMSEABojgAAAGoIUGoH6Pz7//+DxBC4RxIQAGiOAAAAaghQagjo5fv//4PEELhZEhAAaI4A
AABqCFBqCejO+///g8QQuG0SEABojgAAAGoIUGoK6Lf7//+DxBC4fxIQAGiOAAAAaghQagvooPv//4PE
ELiREhAAaI4AAABqCFBqDOiJ+///g8QQuKMSEABojgAAAGoIUGoN6HL7//+DxBC4tRIQAGiOAAAAaghQ
ag7oW/v//4PEELjHEhAAaI4AAABqCFBqD+hE+///g8QQuNsSEABojgAAAGoIUGoQ6C37//+DxBC47xIQ
AGiOAAAAaghQahHoFvv//4PEELgDExAAaI4AAABqCFBqEuj/+v//g8QQuBcTEABojgAAAGoIUGoT6Oj6
//+DxBC4KxMQAGiOAAAAaghQahTo0fr//4PEELg/ExAAaI4AAABqCFBqFei6+v//g8QQuFMTEABojgAA
AGoIUGoW6KP6//+DxBC4ZxMQAGiOAAAAaghQahfojPr//4PEELh7ExAAaI4AAABqCFBqGOh1+v//g8QQ
uI8TEABojgAAAGoIUGoZ6F76//+DxBC4oxMQAGiOAAAAaghQahroR/r//4PEELi3ExAAaI4AAABqCFBq
G+gw+v//g8QQuMsTEABojgAAAGoIUGoc6Bn6//+DxBC43xMQAGiOAAAAaghQah3oAvr//4PEELjzExAA
aI4AAABqCFBqHujr+f//g8QQuAcUEABojgAAAGoIUGof6NT5//+DxBC4GxQQAGiOAAAAaghQaiDovfn/
/4PEELgvFBAAaI4AAABqCFBqIeim+f//g8QQycNVieWD7BSLRQyIReyLRQiJRfzrEQ+2VeyLRfyIEINt
EAGDRfwBg30QAHXpi0UIycNVieWD7BSLRQhmiUXsD7dF7InC7IhF/w+2Rf/Jw1WJ5YPsEOkrAQAAamDo
0f///4PEBIhF/4B9/+B1Ew+2Rf8PtoCALhAAD77A6ScBAADHRfgBAAAAx0X0AAAAAA+2Rf+EwHkLx0X4
AAAAAIBl/38PtkX/g/gqdFSD+Cp/B4P4HXRe622D+DZ0Q4P4OnVjg334AHQVoVwvEACFwHQMxwVcLxAA
AAAAAOseg334AHQYoVwvEACFwHUPxwVcLxAAAQAAAOmkAAAA6Z8AAACDffgAD5XAD7bAo2QvEADpiwAA
AIN9+AAPlcAPtsCjaC8QAOt6oWQvEACFwHQJoVwvEACFwHQSoWQvEACFwHUQoVwvEACFwHQHx0X0AQAA
AIN9+AB1DsYFbC8QAAC4AAAAAOtFg330AHQND7ZF/w+2gAAuEADrCw+2Rf8PtoCALhAAomwvEABqZOim
/v//g8QED7bAg+ABhcAPhb3+//8PtgVsLxAAD77AycNVieXGBYAuEAAAxgWBLhAAG8YFgi4QADHGBYMu
EAAyxgWELhAAM8YFhS4QADTGBYYuEAA1xgWHLhAANsYFiC4QADfGBYkuEAA4xgWKLhAAOcYFiy4QADDG
BYwuEAAtxgWNLhAAPcYFji4QAAjGBY8uEAAJxgWQLhAAccYFkS4QAHfGBZIuEABlxgWTLhAAcsYFlC4Q
AHTGBZUuEAB5xgWWLhAAdcYFly4QAGnGBZguEABvxgWZLhAAcMYFmi4QAFvGBZsuEABdxgWcLhAACsYF
nS4QAADGBZ4uEABhxgWfLhAAc8YFoC4QAGTGBaEuEABmxgWiLhAAZ8YFoy4QAGjGBaQuEABqxgWlLhAA
a8YFpi4QAGzGBacuEAA7xgWoLhAAJ8YFqS4QAGDGBaouEAAAxgWrLhAAXMYFrC4QAHrGBa0uEAB4xgWu
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Q8YFLy4QAFbGBTAuEABCxgUxLhAATsYFMi4QAE3GBTMuEAA8xgU0LhAAPsYFNS4QAD9dw1WJ5YPsGIPs
DGoB6LgBAACDxBDoqvv//4hF9w++RfeD7AxQ6ADy//+DxBAPtgVsLxAAPCB+Jw+2BWwvEAA8f3QcoXAv
EACNUAGJFXAvEAAPvlX3g8ICiRSFAC8QAA+2BWwvEAA8CHUWoXAvEACFwHQNoXAvEACD6AGjcC8QAKFw
LxAAg/gVdQXoYQEAAMnDVYnlg+wIg+wIaHgOEABqIejN9P//g8QQycNVieWD7AiLVQiLRQxmiVX8iEX4
D7ZF+A+3VfzuycNVieWD7BSLRQhmiUXsD7dF7InC7IhF/w+2Rf/Jw1WJ5VODfQgHdy5qIejS////g8QE
icKLRQi7AQAAAInB0+OJ2PfQCdAPtsBQaiHokv///4PECOs1aKEAAADoof///4PEBInCi0UIg+gIuwEA
AACJwdPjidj30AnQD7bAUGihAAAA6Fv///+DxAiLXfzJw1WJ5VODfQgHdy5qIehg////g8QEicKLRQi7
AQAAAInB0+OJ2PfQIdAPtsBQaiHoIP///4PECOs1aKEAAADoL////4PEBInCi0UIg+gIuwEAAACJwdPj
idj30CHQD7bAUGihAAAA6On+//+DxAiLXfzJw1WJ5WogaiDo1f7//4PECIN9CAd2D2ogaKAAAADowP7/
/4PECMnDVYnlg+wYx0X0AAAAAMcFdC8QAAAAAAChWC8QAIP4AXUViw10LxAAuDcTAAC6AAAAAPfxiUX0
x0X0AAAAAOs8i0X0ixSFAC8QAItF9IsEhUAgEAAPtoCALhAAD77AMcKLRfSLBIXAIBAAMcKhdC8QAAnQ
o3QvEACDRfQBg330FHa+oVgvEACFwHUViw10LxAAuAAQAAC6AAAAAPfxiUX0z4PsCGoWaFsVEADov/D/
/4PEEOsti0X0iwSFwCAQADNF9IsEhUAgEACLBIUALxAAg+wIagFQ6GDv//+DxBCDbfQBg330AHXN6/6Q
ArCtGwMAAAD7T1LkvIBvEABQU+iY7v//9Ov9ZpBmkJCLRCQEDwEQZrgQAI7QjtiOwI7gjujqjBEQAAgA
w2aQkFNmjNtTZrsQAI7bUVJXVrvAIRAAjRyDixv/015fWlkfW1iDxATPxgXALRAAAGoAULgAAAAA68nG
BcAtEAABagBQuAEAAADruMYFwC0QAAJqAFC4AgAAAOunxgXALRAAA2oAULgDAAAA65bGBcAtEAAEagBQ
uAQAAADrhcYFwC0QAAVqAFC4BQAAAOlx////xgXALRAABmoAULgGAAAA6V3////GBcAtEAAHagBQuAcA
AADpSf///8YFwC0QAAhQuAgAAADpN////8YFwC0QAAlqAFC4CQAAAOkj////xgXALRAAClC4CgAAAOkR
////xgXALRAAC1C4CwAAAOn//v//xgXALRAADFC4DAAAAOnt/v//xgXALRAADVC4DQAAAOnb/v//xgXA
LRAADlC4DgAAAOnJ/v//xgXALRAAD2oAULgPAAAA6bX+///GBcAtEAAQagBQuBAAAADpof7//8YFwC0Q
ABFqAFC4EQAAAOmN/v//xgXALRAAEmoAULgSAAAA6Xn+///GBcAtEAATagBQuBMAAADpZf7//8YFwC0Q
ABRqAFC4FAAAAOlR/v//xgXALRAAFWoAULgVAAAA6T3+///GBcAtEAAWagBQuBYAAADpKf7//8YFwC0Q
ABdqAFC4FwAAAOkV/v//xgXALRAAGGoAULgYAAAA6QH+///GBcAtEAAZagBQuBkAAADp7f3//8YFwC0Q
ABpqAFC4GgAAAOnZ/f//xgXALRAAG2oAULgbAAAA6cX9///GBcAtEAAcagBQuBwAAADpsf3//8YFwC0Q
AB1qAFC4HQAAAOmd/f//xgXALRAAHmoAULgeAAAA6Yn9///GBcAtEAAfagBQuB8AAADpdf3//8YFwC0Q
ACBqAFC4IAAAAOlh/f//xgXALRAAIWoAULghAAAA6U39///GBcAtEAAiagBQuCIAAADpOf3//8YFwC0Q
ACNqAFC4IwAAAOkl/f//xgXALRAAJGoAULgkAAAA6RH9///GBcAtEAAlagBQuCUAAADp/fz//8YFwC0Q
ACZqAFC4JgAAAOnp/P//xgXALRAAJ2oAULgnAAAA6dX8///GBcAtEAAoagBQuCgAAADpwfz//8YFwC0Q
AClqAFC4KQAAAOmt/P//xgXALRAAKmoAULgqAAAA6Zn8///GBcAtEAAragBQuCsAAADphfz//8YFwC0Q
ACxqAFC4LAAAAOlx/P//xgXALRAALWoAULgtAAAA6V38///GBcAtEAAuagBQuC4AAADpSfz//8YFwC0Q
AC9qAFC4LwAAAOk1/P//ZmFpbHtVX2Y0MWxfaDRyRCFUX1R9CgAAABQAAAAAAAAAAXpSAAF8CAEbDAQE
iAEAACAAAAAcAAAAbOr//zcAAAAARAwBAEcQBQJ1AEMPA3V8BgAAABwAAABAAAAAf+r//1IAAAAAQQ4I
hQJCDQUCTsUMBAQAHAAAAGAAAACx6v//FwAAAABBDgiFAkINBVPFDAQEAAAcAAAAgAAAAKjq//80AQAA
AEEOCIUCQg0FAzABxQwEBBwAAACgAAAAvOv//1QAAAAAQQ4IhQJCDQUCUMUMBAQAHAAAAMAAAADw6///
nQAAAABBDgiFAkINBQKZxQwEBAAcAAAA4AAAAG3s//+rAAAAAEEOCIUCQg0FAqfFDAQEABwAAAAAAQAA
+Oz//x4AAAAAQQ4IhQJCDQVaxQwEBAAAHAAAACABAAD27P//WwAAAABBDgiFAkINBQJXxQwEBAAcAAAA
QAEAADHt//8bAAAAAEEOCIUCQg0FV8UMBAQAABgAAABgAQAALO3//wYAAAAAQQ4IhQJCDQUAAAAYAAAA
fAEAABbt///AAAAAAEEOCIUCQg0FRIMDHAAAAJgBAAC67f//9gAAAABBDgiFAkINBQLyxQwEBAAcAAAA
uAEAAJDu//8tBAAAAEEOCIUCQg0FAykExQwEBBwAAADYAQAAnfL//zAAAAAAQQ4IhQJCDQVsxQwEBAAA
HAAAAPgBAACt8v//HQAAAABBDgiFAkINBVnFDAQEAAAcAAAAGAIAAKry//9aAQAAAEEOCIUCQg0FA1YB
xQwEBBwAAAA4AgAA5PP//+QCAAAAQQ4IhQJCDQUD4ALFDAQEHAAAAFgCAACo9v//jwAAAABBDgiFAkIN
BQKLxQwEBAAcAAAAeAIAABf3//8aAAAAAEEOCIUCQg0FVsUMBAQAABwAAACYAgAAEff//x4AAAAAQQ4I
hQJCDQVaxQwEBAAAHAAAALgCAAAP9///HQAAAABBDgiFAkINBVnFDAQEAAAgAAAA2AIAAAz3//9yAAAA
AEEOCIUCQg0FQYMDAm3FwwwEBAAgAAAA/AIAAFr3//9yAAAAAEEOCIUCQg0FQYMDAm3FwwwEBAAcAAAA
IAMAAKj3//8mAAAAAEEOCIUCQg0FYsUMBAQAABgAAABAAwAArvf//+kAAAAAQQ4IhQJCDQUAAAAAAAAA
AAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAA
AAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAA
AAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAA
AAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAA
AAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAA
AAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAA
AAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAA
AAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAA
AAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAA
AAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAA
AAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAA
AAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAA
AAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAA
AAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAA
AAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAA
AAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAA
AAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAA
AAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAA
AAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAA
AAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAA
AAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAA
AAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAA
AAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAA
AAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAA
AAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAA
AAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAA
AAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAA
AAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAA
AAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAA
AAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAA
AAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAACACwDc1tvdmtPJgJoAAAAAAAAA
AAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAjAAAABQAAAC4AAAAlAAAA
BAAAABMAAAAsAAAADAAAABMAAAAWAAAAJgAAACYAAAAsAAAADAAAACAAAAAFAAAAEQAAABgAAAATAAAA
JgAAACAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAA4AAABVAAAA
CgAAAAcAAABIAAAAMAAAAEoAAABCAAAABgAAABwAAAACAAAACwAAACUAAAAcAAAAFwAAAGsAAABEAAAA
WwAAAAgAAAA1AAAAGQAAAEdDQzogKEdOVSkgNC45LjIAAC5zaHN0cnRhYgAudGV4dAAuZWhfZnJhbWUA
LmRhdGEALmJzcwAuY29tbWVudAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAA
CwAAAAEAAAAGAAAAAAAQAIAAAAByFQAAAAAAAAAAAAAQAAAAAAAAABEAAAABAAAAAgAAAHQVEAD0FQAA
WAMAAAAAAAAAAAAABAAAAAAAAAAbAAAAAQAAAAMAAAAAIBAAgCAAABQBAAAAAAAAAAAAAEAAAAAAAAAA
IQAAAAgAAAADAAAAQCEQAJQhAABATgAAAAAAAAAAAABAAAAAAAAAACYAAAABAAAAMAAAAAAAAACUIQAA
EQAAAAAAAAAAAAAAAQAAAAEAAAABAAAAAwAAAAAAAAAAAAAApSEAAC8AAAAAAAAAAAAAAAEAAAAAAAAA

Now you will take the only the hash and if you have a linux you can start pressing:

echo "hash-here" | tee hash.txt

Now you will have the content in hash.txt but we don’t know what type of file it is! So now let’s try to decode it.

cat hash.txt | base64 --decode

This is the output:

Now we can find that is a file compiled by GCC so is .C file , now we can put this file in another file called hex

cat hash.txt | base64 --decode > hex

Now we can see what type of file it is:

NICE!! It’s an ELF 32-bit file and it’s seems to be executable, now we need extract the right part of this file using xxd or other tool and we can see:

Now we can extract the HEX code and decode it. The HEX code is:

66 61 69 6C 7B 55 5F 66 34 31 6C 5F 68 34 72 44 21 54 5F 54 7D

Now go on hex decoder online

And we have found the final flag!
FLAG: fail{U_f41l_h4rD!T_T}
Hope is useful

0xJin
Twitter: https://twitter.com/0xJin

Rebels Contest Cracking

Written by 0xJin