mhaskar / mhaskar/Shellcode-In-Memory-Decoder

Variable length xor in python

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Dominant language
C
Stars
97
Forks
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Description

https://github.com/mhaskar/Shellcode-In-Memory-Decoder/blob/08e0b1f12b6b254fa3ed4ee14aa244a3487b2afd/xor-encoder.py#L15

key = '\x01'
print( ''.join([chr(ord(v)^ord(key[i%len(key)])) for i,v in enumerate(raw_data)]) )

This would be a variable length XOR key

Contributor guide

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Research direction

Start at xor-encoder.py line 15 and compare the current single-byte key handling with the variable-length XOR expression shown in the issue. Verify how raw_data and the key are represented, then confirm that encoding cycles through every key byte as the completed behavior.

Written by the indexing model from the issue text.

Assessment

Tech stack
python
Domain
security
Issue type
Feature
Difficulty
2/5
Estimated time
1-3 hours
Activity status
Stale
Clarity
Mostly clear
Newbie friendliness
35/100

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