mirror of
https://github.com/dobin/ShellcodeObfuscationLab
synced 2026-06-08 13:53:31 +00:00
Dobin Rutishauser
65 lines
1.6 KiB
Python
65 lines
1.6 KiB
Python
import random
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import sys
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def getShellcode(input_file):
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file_shellcode = b''
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try:
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with open(input_file, 'rb') as shellcode_file:
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file_shellcode = shellcode_file.read()
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file_shellcode = file_shellcode.strip()
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binary_code = ''
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sc_array = []
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for byte in file_shellcode:
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binary_code += "\\x" + hex(byte)[2:].zfill(2)
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raw_shellcode = "0" + ",0".join(binary_code.split("\\")[1:])
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for byte in raw_shellcode.split(','):
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sc_array.append(byte)
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return(sc_array)
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except FileNotFoundError:
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sys.exit("\n\nThe input file you specified does not exist! Please specify a valid file path.\nExiting...\n")
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def jigsaw(filename):
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shellcode = getShellcode(filename)
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sc_len = len(shellcode)
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raw_positions = list(range(0,sc_len))
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random.shuffle(raw_positions)
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jigsaw = []
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for position in raw_positions:
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jigsaw.append(shellcode[position])
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jigsaw_array = 'unsigned char jigsaw[XXX] = { '
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jigsaw_array += ', '.join(str(byte) for byte in jigsaw)
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jigsaw_array += ' };'
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position_array = 'int positions[XXX] = { '
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position_array += ', '.join(str(x) for x in raw_positions)
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position_array += ' };'
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code = jigsaw_array + '\n\n'
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code += position_array + '\n\n'
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code += '''
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unsigned char shellcode[XXX] = { 0x00 };
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int position;
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// Reconstruct the payload
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for (int idx = 0; idx < sizeof(positions) / sizeof(positions[0]); idx++) {
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position = positions[idx];
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shellcode[position] = jigsaw[idx];
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}
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'''
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code = code.replace('XXX', str(sc_len))
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return code
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