package com.zaier.util;
import cn.hutool.core.io.FileUtil;
import java.io.File;
import java.io.FileInputStream;
import java.io.FileOutputStream;
import java.io.InputStream;
import java.io.OutputStream;
import java.util.Arrays;
import java.util.HashMap;
import java.util.Map;
import java.util.concurrent.atomic.AtomicInteger;
import java.util.concurrent.atomic.AtomicReference;
/**
* 微信端 dat文件解密
*/
public class WxChatImgRevert {
public static void main(String[] args) {
String path = "C:\\Users\\Administrator\\Documents\\WeChat Files\\wxid_if2rkuq212ftxx\\FileStorage\\Image\\2022-11\\e2f6afe0fe7cc0e0b3a5e87a0c440fbe.dat";
String targetPath = "C:\\Users\\Administrator\\Documents\\cache";
convertFile(path, targetPath);
}
// ######################################################################################
/**
*
* @param filepath 微信dat文件
* @param targetPath 解密文件目录
* @return
*/
public static String convertFile(String filepath, String targetPath) {
if (targetPath ==null){
targetPath = FileUtil.getUserHomeDir() + File.separator + "wxCache"; // 默认用户目录下wxCache
}
File dirPath = new File(targetPath);
if (!dirPath.exists()){
dirPath.mkdirs();
}
final File file = new File(filepath);
if (!file.exists()){
return null;
}
Object[] xor = getXor(file);
final String coverFilePath = targetPath + File.separator + file.getName().split("\\.")[0] + (xor[0] != null ?
"." + xor[0] : "");
try (InputStream reader = new FileInputStream(file);
OutputStream writer =
new FileOutputStream(coverFilePath)) {
byte[] bytes = new byte[1024 * 10];
int b;
while ((b = reader.read(bytes)) != -1) {
for (int i = 0; i < bytes.length; i++) {
bytes[i] = (byte) (int) (bytes[i] ^ (int) xor[1]);
if (i == (b - 1)) {
break;
}
}
writer.write(bytes, 0, b);
writer.flush();
}
} catch (Exception e) {
e.printStackTrace();
}
System.out.println(filepath);
System.out.println("change:"+coverFilePath);
return coverFilePath;
}
/**
* @param path 图片目录地址
* @param targetPath 转换后目录
*/
public static void convert(String path, String targetPath) {
File[] file = new File(path).listFiles();
if (file == null) {
return;
}
int size = file.length;
System.out.println("总共" + size + "个文件");
AtomicReference<Integer> integer = new AtomicReference<>(0);
AtomicInteger x = new AtomicInteger();
for (File file1 : file) {
if (file1.isFile()) {
Object[] xori = getXor(file1);
if (xori != null && xori[1] != null){
x.set((int)xori[1]);
}
break;
}
}
Arrays.stream(file).parallel().forEach(file1 -> {
if (file1.isDirectory()) {
String[] newTargetPath = file1.getPath().split("/|\\\\");
File targetFile = new File(targetPath+File.separator+newTargetPath[newTargetPath.length - 1]);
if (!targetFile.exists()) {
targetFile.mkdirs();
}
convert(file1.getPath(),targetPath+File.separator+newTargetPath[newTargetPath.length - 1]);
return;
}
Object[] xor = getXor(file1);
if (x.get() == 0 && xor[1] != null && (int) xor[1] != 0) {
x.set((int) xor[1]);
}
xor[1] = xor[1] == null ? x.get() : xor[1];
try (InputStream reader = new FileInputStream(file1);
OutputStream writer =
new FileOutputStream(targetPath + File.separator + file1.getName().split("\\.")[0] + (xor[0] != null ?
"." + xor[0] : ""))) {
byte[] bytes = new byte[1024 * 10];
int b;
while ((b = reader.read(bytes)) != -1) {//这里的in.read(bytes);就是把输入流中的东西，写入到内存中（bytes）。
for (int i = 0; i < bytes.length; i++) {
bytes[i] = (byte) (int) (bytes[i] ^ (int) xor[1]);
if (i == (b - 1)) {
break;
}
}
writer.write(bytes, 0, b);
writer.flush();
}
integer.set(integer.get() + 1);
System.out.println(file1.getName() + "(大小:" + ((double) file1.length() / 1000) + "kb,异或值:" + xor[1] + ")," +
"进度：" + integer.get() +
"/" + size);
} catch (Exception e) {
e.printStackTrace();
}
});
System.out.println("解析完毕！");
}
/**
* 判断图片异或值
*
* @param file
* @return
*/
private static Object[] getXor(File file) {
Object[] xor = null;
if (file != null) {
byte[] bytes = new byte[4];
try (InputStream reader = new FileInputStream(file)) {
reader.read(bytes, 0, bytes.length);
} catch (Exception e) {
e.printStackTrace();
}
xor = getXor(bytes);
}
return xor;
}
/**
* @param bytes
* @return
*/
private static Object[] getXor(byte[] bytes) {
Object[] xorType = new Object[2];
int[] xors = new int[3];
for (Map.Entry<String, String> type : FILE_TYPE_MAP.entrySet()) {
String[] hex = {
String.valueOf(type.getKey().charAt(0)) + type.getKey().charAt(1),
String.valueOf(type.getKey().charAt(2)) + type.getKey().charAt(3),
String.valueOf(type.getKey().charAt(4)) + type.getKey().charAt(5)
};
xors[0] = bytes[0] & 0xFF ^ Integer.parseInt(hex[0], 16);
xors[1] = bytes[1] & 0xFF ^ Integer.parseInt(hex[1], 16);
xors[2] = bytes[2] & 0xFF ^ Integer.parseInt(hex[2], 16);
if (xors[0] == xors[1] && xors[1] == xors[2]) {
xorType[0] = type.getValue();
xorType[1] = xors[0];
break;
}
}
return xorType;
}
private final static Map<String, String> FILE_TYPE_MAP = new HashMap<String, String>();
static {
getAllFileType();
}
private static void getAllFileType() {
FILE_TYPE_MAP.put("ffd8ffe000104a464946", "jpg"); //JPEG (jpg)
FILE_TYPE_MAP.put("89504e470d0a1a0a0000", "png"); //PNG (png)
FILE_TYPE_MAP.put("47494638396126026f01", "gif"); //GIF (gif)
FILE_TYPE_MAP.put("49492a00227105008037", "tif"); //TIFF (tif)
FILE_TYPE_MAP.put("424d228c010000000000", "bmp"); //16色位图(bmp)
FILE_TYPE_MAP.put("424d8240090000000000", "bmp"); //24位位图(bmp)
FILE_TYPE_MAP.put("424d8e1b030000000000", "bmp"); //256色位图(bmp)
FILE_TYPE_MAP.put("41433130313500000000", "dwg"); //CAD (dwg)
FILE_TYPE_MAP.put("3c21444f435459504520", "html"); //HTML (html)
FILE_TYPE_MAP.put("3c21646f637479706520", "htm"); //HTM (htm)
FILE_TYPE_MAP.put("48544d4c207b0d0a0942", "css"); //css
FILE_TYPE_MAP.put("696b2e71623d696b2e71", "js"); //js
FILE_TYPE_MAP.put("7b5c727466315c616e73", "rtf"); //Rich Text Format (rtf)
FILE_TYPE_MAP.put("38425053000100000000", "psd"); //Photoshop (psd)
FILE_TYPE_MAP.put("46726f6d3a203d3f6762", "eml"); //Email [Outlook Express 6] (eml)
FILE_TYPE_MAP.put("d0cf11e0a1b11ae10000", "doc"); //MS Excel 注意：word、msi 和 excel的文件头一样
FILE_TYPE_MAP.put("d0cf11e0a1b11ae10000", "vsd"); //Visio 绘图
FILE_TYPE_MAP.put("5374616E64617264204A", "mdb"); //MS Access (mdb)
FILE_TYPE_MAP.put("252150532D41646F6265", "ps");
FILE_TYPE_MAP.put("255044462d312e360d25", "pdf"); //Adobe Acrobat (pdf)
FILE_TYPE_MAP.put("2e524d46000000120001", "rmvb"); //rmvb/rm相同
FILE_TYPE_MAP.put("464c5601050000000900", "flv"); //flv与f4v相同
FILE_TYPE_MAP.put("00000020667479706973", "mp4");
FILE_TYPE_MAP.put("49443303000000000f76", "mp3");
FILE_TYPE_MAP.put("000001ba210001000180", "mpg"); //
FILE_TYPE_MAP.put("3026b2758e66cf11a6d9", "wmv"); //wmv与asf相同
FILE_TYPE_MAP.put("524946464694c9015741", "wav"); //Wave (wav)
FILE_TYPE_MAP.put("52494646d07d60074156", "avi");
FILE_TYPE_MAP.put("4d546864000000060001", "mid"); //MIDI (mid)
FILE_TYPE_MAP.put("504b0304140000000800", "zip");
FILE_TYPE_MAP.put("526172211a0700cf9073", "rar");
FILE_TYPE_MAP.put("235468697320636f6e66", "ini");
FILE_TYPE_MAP.put("504b03040a0000000000", "jar");
FILE_TYPE_MAP.put("4d5a9000030000000400", "exe");//可执行文件
FILE_TYPE_MAP.put("3c25402070616765206c", "jsp");//jsp文件
FILE_TYPE_MAP.put("4d616e69666573742d56", "mf");//MF文件
FILE_TYPE_MAP.put("3c3f786d6c2076657273", "xml");//xml文件
FILE_TYPE_MAP.put("efbbbf2f2a0d0a53514c", "sql");//xml文件
FILE_TYPE_MAP.put("7061636b616765207765", "java");//java文件
FILE_TYPE_MAP.put("406563686f206f66660d", "bat");//bat文件
FILE_TYPE_MAP.put("1f8b0800000000000000", "gz");//gz文件
FILE_TYPE_MAP.put("6c6f67346a2e726f6f74", "properties");//bat文件
FILE_TYPE_MAP.put("cafebabe0000002e0041", "class");//bat文件
FILE_TYPE_MAP.put("49545346030000006000", "chm");//bat文件
FILE_TYPE_MAP.put("04000000010000001300", "mxp");//bat文件
FILE_TYPE_MAP.put("504b0304140006000800", "docx");//docx文件
FILE_TYPE_MAP.put("d0cf11e0a1b11ae10000", "wps");//WPS文字wps、表格et、演示dps都是一样的
FILE_TYPE_MAP.put("6431303a637265617465", "torrent");
FILE_TYPE_MAP.put("494d4b48010100000200", "264");
FILE_TYPE_MAP.put("6D6F6F76", "mov"); //Quicktime (mov)
FILE_TYPE_MAP.put("FF575043", "wpd"); //WordPerfect (wpd)
FILE_TYPE_MAP.put("CFAD12FEC5FD746F", "dbx"); //Outlook Express (dbx)
FILE_TYPE_MAP.put("2142444E", "pst"); //Outlook (pst)
FILE_TYPE_MAP.put("AC9EBD8F", "qdf"); //Quicken (qdf)
FILE_TYPE_MAP.put("E3828596", "pwl"); //Windows Password (pwl)
FILE_TYPE_MAP.put("2E7261FD", "ram"); //Real Audio (ram)
}
}
标签：MAP,xor,微信,解码,bytes,dat,FILE,put,TYPE From： https://www.cnblogs.com/cqzaier/p/17743802.html