72 lines
2.3 KiB
Python
72 lines
2.3 KiB
Python
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from pathlib import Path
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exported = Path(r'F:\Apps\Crusader No Regret\REGRET.EXE')
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hand = Path(r'F:\Apps\Crusader No Regret\REGRET-DEBUGGER.EXE')
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original = Path(r'F:\Apps\Crusader No Regret\REGRET - Copy.EXE')
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files = {
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'exported': exported.read_bytes(),
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'hand': hand.read_bytes(),
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'original': original.read_bytes(),
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}
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for name, data in files.items():
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print(f'{name}: size={len(data)}')
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print('')
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pairs = [('exported', 'hand'), ('exported', 'original'), ('hand', 'original')]
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for left, right in pairs:
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a = files[left]
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b = files[right]
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diff_offsets = [index for index, (ba, bb) in enumerate(zip(a, b)) if ba != bb]
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if len(a) != len(b):
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print(f'{left} vs {right}: different sizes')
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print(f'{left} vs {right}: differing byte positions={len(diff_offsets)}')
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if diff_offsets:
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preview = diff_offsets[:20]
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print(f' first offsets: {preview}')
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print('')
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patterns = {
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'call_bootstrap': bytes.fromhex('9a00009813'),
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'call_open_modal': bytes.fromhex('9a0d029813'),
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'call_old_dialog': bytes.fromhex('9a46005013'),
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}
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for name, data in files.items():
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print(f'Pattern scan in {name}:')
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for pattern_name, pattern in patterns.items():
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hits = []
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start = 0
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while True:
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offset = data.find(pattern, start)
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if offset == -1:
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break
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hits.append(offset)
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start = offset + 1
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print(f' {pattern_name}: {len(hits)} hits; first 20={hits[:20]}')
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print('')
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active_branch_context_original = bytes.fromhex(
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'6aff6affc41e985c268a4705501e68d5306a006a0083ec06c746e800008b46e8f7d08946eac646ec006a006a009a4600501383c414'
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)
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active_branch_context_patched = bytes.fromhex(
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'6aff6affc41e985c268a4705501e68d5306a006a0083ec06c746e800008b46e8f7d08946eac646ec006a006a009a0d02981383c414'
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)
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for name, data in files.items():
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orig_hit = data.find(active_branch_context_original)
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patch_hit = data.find(active_branch_context_patched)
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print(f'{name}: active-branch old-context offset={orig_hit}, patched-context offset={patch_hit}')
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print('')
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diff_offsets = [506633, 506649, 506665]
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for offset in diff_offsets:
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print(f'Context around offset {offset}:')
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start = max(0, offset - 6)
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end = offset + 10
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for name, data in files.items():
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print(f' {name}: {data[start:end].hex()}')
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print('')
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