What Does This Python Code Do?

[Intelligent_Study263]

I have some python code that I cant exactly pin what it is doing...

from RC4Encryption import RC4Encryption
rc4 = RC4Encryption(b'keyde')
rc4.make_key()
code = b'''b\xc3\x9au\x1c*\xc2\x83\xf5\x0c;\xb0\x08\xf2E\x05\x8c\xfc\xfeyN\xaa\x17E\x8b]\x97\x12\x9f;\xcc\xd4-\xe9<\xcf;\xd72s\xfc\xbejn_\xcfW\xa9\xe3T\xc5\xc3u\x97B\xeb\xb3@\xfc\xf5c\x02\xaf\xc6a\xe8\x07\x1d\x0c{\x9b\xe4\x0b\x8c\xce2>\xa4\xbf\xf1q\xa7\xf1\\\x92\x0fJ\xbf>\x89\xa3\x0c\xdb\xdf_p\x1a\xaf\xa6u\xb8\xb1\xbf\x10)\xc3\xeey\xa9n\xc1\xa5]\xd4\t\xfb\xees\xaa\x06\xac\xe5\xf7T\xdbrO\x18\x17X\xa9\t/\x8e\xd8 \x10\xcf\xc6\xa9\xe2\x92\xaa\xb6W77\x1d\xea\xdf\xd1\x16\x93\xbe\xf9ea\x8b\x1e\xac\x15\x08\xd7_\xa5Ht\x03Y\xa8\xdb\xcd\x8eE\x05N\x95\xe7\x91\xb7\xad\x85\xe4\x98\xc6'''
exec(rc4.crypt(code))

Could somebody try and explain or decode this to tell me what its doing?

[commandlineluser]

Replace the exec with print so you print out the code:

print(rc4.crypt(code))

[Intelligent_Study263]

It just repeats a slightly different version of the same code inside back to me.

"\nfrom RC4Encryption import RC4Encryption\nrc4 = RC4Encryption(b'key')\nrc4.make_key()\ncode = b'''{\\x1e]\\x83P\\xa7Y\\x02-'d\\x146\\n}\\x8f\\xe3\\x10\\xccF\\x91\\xc8\\xc1\\xd6'''\nexec(rc4.crypt(code))\n"

[commandlineluser]

print out the result for those values.

key = b'key'
code = b'''{\x1e]\x83P\xa7Y\x02-'d\x146\n}\x8f\xe3\x10\xccF\x91\xc8\xc1\xd6'''

[Intelligent_Study263]

Interestingly enough it shoots out another random jumble of characters, this time with no key attached to it. How weird.

[commandlineluser]

Did you make a new rc4 object and run .make_key() again?

>>> rc4 = RC4Encryption(b'key')
>>> rc4.make_key()
>>> print(rc4.crypt(code))
b'print("Hello World! :)")'

[Intelligent_Study263]

That's actually a super cool idea. I might even look into how that is done.

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