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@DoubleYouEl
Forked from lkraider/spam_decode.py
Last active May 20, 2026 12:38
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Save DoubleYouEl/e3de97293ce3d5452b3be7a336a06ad7 to your computer and use it in GitHub Desktop.
X-OVH-SPAMCAUSE decoder
def decode(msg):
text = ""
for i in range(0, len(msg), 2):
text += unrot(msg[i: i + 2], i // 2) # add position as extra parameter
return text
def unrot(pair, pos, key=ord('x')):
if pos % 2 == 0: # "even" position => 2nd char is offset
pair = pair[1] + pair[0] # swap letters in pair
offset = (ord('g') - ord(pair[0])) * 16 # treat 1st char as offset
return chr(sum(ord(c) for c in pair) - key - offset) # map to original character
if __name__ == '__main__':
import sys
print(decode(sys.argv[1]))
@mqu

mqu commented Mar 24, 2023

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an other way to use this script:

  • feed spamcause header in a file whithout "X-VR-SPAMCAUSE: "
  • then run
python3 ./ovh-spam-cause.py $(cat /tmp/temp-file) | sed -e "s/;/\n/g"

@revolunet

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Here's an online version : https://f3hj7s.csb.app

@Krusty07

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Hi, I have been using the online version which was working fine @revolunet -> Thx by the way !
But things have changed since a couple of weeks. I can't decode anymore, the code changed. any idea how to fix this ?
Thanks in advance :)

@arbiyassine17

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Here's an online version : https://f3hj7s.csb.app

i just came to know your online version i was using python script. But i'm afraid that it is not working anymore it had been some update. if you can try with this source:

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

@dexter74

dexter74 commented May 26, 2025

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Hello,
Can your share code at github ?

@daSilva-drs

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Here's an online version : https://f3hj7s.csb.app

i just came to know your online version i was using python script. But i'm afraid that it is not working anymore it had been some update. if you can try with this source:

dmFkZTFe/e7/NBcbdIzTiTd9iacMG74sllyWk8AUVYUN6FnPcWkWUvzuZYciE1WOqPM1IEphrIPmIRc+FzW1CIZ0dEsLixCUfXZjhSQFGV4g3SdxBEt2s0XD0+cb5zDgrffQLdLtkAd2v46gQBK2Nnt5M8ch//tKN5r+kHSaSh8p1lwcwTZi111GuKnpyvH1IblBkvty3LTt+zTq+NrbC1iwQOs7a7uclX2p7tKhfXfXKQvZm8FG/mkEWz2jx6AM6rw0XldvaK+zhGwlKjjU8hi5/aa9AgO8QpIsnrU/BGgTuD/DOpDDgA/K3hFha1PcRD1Mn0gP40HSOYH/PxB122wRmrXmlS4n933nbB5IV+uSWESSiS4Gt4BzsfV/3eL1Z17W9LbCXkMpe/08haZyLw9Bn2DHVvaI1uf/Eu8XORuTvFOg4wnsWBImD3LU0S9La5F53zAgNU6GFdXqnvhtPhxRibn5Fczeuzj2O/+580lUO/yGEw2CyLi1Vo/SoVE6+WFpj7DICwKiO+o/rfyb4ulp01Y4FYs1yOsk9AmVs2IOr+/eVyLVGRlkfIWbIB/d62KLog6ooC/TBFyfgdyku36VOnlg/MfjC4G+RxvhA2TNgO0Vbpw9vvADYNqMGG+tqVoFHkBRpgSLkTuLAx3PI2KoG/BW8NFq3QWJg40wI2k6UeHCHw

Same here. Recently been seeing this in Telenet and Orange. Any update?

@arbiyassine17

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hello brothers,
any update concerning that ??

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