Created
February 24, 2018 13:33
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Calculates the bytes used for a positve relative jump over 129 bytes in x64 asm (e.g: je $+300)
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| loc = 300 | |
| asm = [-0x06, 0x00, 0x00, 0x00] | |
| for i in range(0, loc): | |
| if asm[0] == 0xff: | |
| if asm[1] == 0xff: | |
| if asm[2] == 0xff: | |
| asm[3] += 1 | |
| asm[2] = 0x00 | |
| asm[1] = 0x00 | |
| asm[0] = 0x00 | |
| else: | |
| asm[2] += 1 | |
| asm[1] = 0x00 | |
| asm[0] = 0x00 | |
| else: | |
| asm[1] += 1 | |
| asm[0] = 0x00 | |
| else: | |
| asm[0] += 1 | |
| print(''.join('{:02x} '.format(x) for x in asm)) |
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