Created
January 6, 2024 02:31
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微信dat图片还原(PHP版)
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<?php | |
function DatToImage($datPath) { | |
$b = file_get_contents($datPath); | |
if ($b === false) { | |
throw new Exception("Failed to read DAT file"); | |
} | |
if (strlen($b) < 2) { | |
throw new Exception("Image size error"); | |
} | |
$j0 = ord($b[0]) ^ 0xFF; | |
$j1 = ord($b[1]) ^ 0xD8; | |
$g0 = ord($b[0]) ^ 0x47; | |
$g1 = ord($b[1]) ^ 0x49; | |
$p0 = ord($b[0]) ^ 0x89; | |
$p1 = ord($b[1]) ^ 0x50; | |
$v = 0; | |
$ext = ''; | |
if ($j0 == $j1) { | |
$v = $j0; | |
$ext = 'jpg'; | |
} else if ($g0 == $g1) { | |
$v = $g0; | |
$ext = 'gif'; | |
} else if ($p0 == $p1) { | |
$v = $p0; | |
$ext = 'png'; | |
} else { | |
throw new Exception("Unknown image format"); | |
} | |
for ($i = 0; $i < strlen($b); $i++) { | |
$b[$i] = chr(ord($b[$i]) ^ $v); | |
} | |
$imgPath = substr($datPath, 0, -strlen($ext)).$ext; | |
if (file_put_contents($imgPath, $b) === false) { | |
throw new Exception("Failed to write image file"); | |
} | |
return $imgPath; | |
} | |
try { | |
$datPath = 'f8bdeb8a1cc3586ec6e29ff883257c2f.dat'; | |
$imgPath = DatToImage($datPath); | |
echo "Image successfully converted: ".$imgPath; | |
} catch (Exception $e) { | |
echo "Error converting image: ".$e->getMessage(); | |
} | |
?> |
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