38 lines
872 B
Python
38 lines
872 B
Python
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#!/usr/bin/env python3
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"""
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Tool to manually remove JPG corruption.
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This takes an address and a region in bytes, and then writes random data in a
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loop to that region. Type a specific value to go back to a previous iteration.
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I was too lazy to write an argparse for this, so please set `addr`, `val_len`
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and `file_name` below.
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Also, duplicate the image file before running it through this!
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"""
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# region start
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addr = 0x948
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# region length in bytes
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val_len = 2
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file_name = "pic.jpg"
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import mmap
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import random
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val = 0
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max_val = 1 << (val_len * 8) - 1
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while True:
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with open(file_name, "r+b") as file:
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with mmap.mmap(file.fileno(), 0) as mm:
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mm[addr : addr + val_len] = val.to_bytes(length=val_len)
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print(hex(val))
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inp = input()
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if inp == "":
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val = random.randint(0, max_val)
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else:
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val = int(inp, base=16)
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