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< h1 id = "小米固件工具mkxqimage" > < a href = "#小米固件工具mkxqimage" class = "headerlink" title = "小米固件工具mkxqimage" > < / a > 小米固件工具mkxqimage< / h1 > < p > 小米自己改了个打包解包固件的工具,基于 trx 改的(本质上还是 trx 格式),加了 RSA 验证和解包功能,路由系统里自带:< br > < figure class = "highlight plain" > < table > < tr > < td class = "gutter" > < pre > < span class = "line" > 1< / span > < br > < span class = "line" > 2< / span > < br > < span class = "line" > 3< / span > < br > < span class = "line" > 4< / span > < br > < / pre > < / td > < td class = "code" > < pre > < span class = "line" > Usage:< / span > < br > < span class = "line" > mkxqimg [-o outfile] [-p private_key] [-f file] [-f file [-f file [-f file ]]]< / span > < br > < span class = "line" > [-x file]< / span > < br > < span class = "line" > [-I]< / span > < br > < / pre > < / td > < / tr > < / table > < / figure > < / p >
< h2 id = "固件解包" > < a href = "#固件解包" class = "headerlink" title = "固件解包" > < / a > 固件解包< / h2 > < p > 固件工具mkxqimage完成对固件的解包, 在解包前先检查Checksum是否正确, 然后利用RSA公钥/usr/share/xiaoqiang/public.pem检查RSA签名, 这两个步骤通过后, 根据[0x0C]的固件类型,以及[0x10]、[0x14]、[0x18]和[0x1C]的4个偏移量拆分固件。< / p >
< h2 id = "固件打包" > < a href = "#固件打包" class = "headerlink" title = "固件打包" > < / a > 固件打包< / h2 > < p > 小米官方在打包固件时用RSA私钥计算出固件的RSA签名, 小米路由器下载固件后用RSA公钥来验证RSA签名, 有效地防止固件被篡改。< / p >
< h2 id = "固件格式" > < a href = "#固件格式" class = "headerlink" title = "固件格式" > < / a > < a href = "http://www.iptvfans.cn/wiki/index.php/%E5%B0%8F%E7%B1%B3%E8%B7%AF%E7%94%B1%E5%99%A8%E5%9B%BA%E4%BB%B6%E5%88%86%E6%9E%90" target = "_blank" rel = "noopener" > 固件格式< / a > < / h2 > < p > 路由固件的格式,基本是基于 openwrt 的 trx 这个简单的二进制文件格式< br > < figure class = "highlight plain" > < table > < tr > < td class = "gutter" > < pre > < span class = "line" > 1< / span > < br > < span class = "line" > 2< / span > < br > < span class = "line" > 3< / span > < br > < / pre > < / td > < td class = "code" > < pre > < span class = "line" > 48 44 52 30 63 D4 11 03 FE 3D 1A FD 05 00 02 00< / span > < br > < span class = "line" > 20 00 00 00 20 00 FE 00 00 00 00 00 00 00 00 00< / span > < br > < span class = "line" > FF 04 00 EA 14 F0 9F E5 14 F0 9F E5 14 F0 9F E5< / span > < br > < / pre > < / td > < / tr > < / table > < / figure > < / p >
< p > 第1~ 4字节: ASCII字符串“HDR0”, 作为固件的标识; < br > 第5~ 8字节: 4字节整型数0x0311D464, 表示固件的大小: 51500132字节; < br > 第9~12字节: 固件的检查和; < br > 第13~ 14字节: 0x0005, 表示固件中包含哪些部分; < br > 第15~ 16字节: 0x0002, 表示固件格式版本号; < br > 第17~ 20字节: 0x00000020, 表示固件第一部分在整个固件中的偏移量, 0.4.85固件的第一部分是brcm4709_nor.bin, 也就是Flash中除0xfe0000-0xff0000的board_data外的全镜像; < br > 第21~ 24字节: 0x00FE0020, 表示固件第二部分在整个固件中的偏移量, 0.4.85固件的第二部分是root.ext4.lzma, 也就是硬盘中128M固件的压缩包; < br > 第33字节开始是固件的正式内容开始。< / p >
< h2 id = "小米开启ssh工具包" > < a href = "#小米开启ssh工具包" class = "headerlink" title = "小米开启ssh工具包" > < / a > 小米开启ssh工具包< / h2 > < p > 使用mkxqimage解包< br > (现在会提示秘钥不存在)< br > < figure class = "highlight plain" > < table > < tr > < td class = "gutter" > < pre > < span class = "line" > 1< / span > < br > < span class = "line" > 2< / span > < br > < / pre > < / td > < td class = "code" > < pre > < span class = "line" > error fopen public key< / span > < br > < span class = "line" > Image verify failed, not formal image< / span > < br > < / pre > < / td > < / tr > < / table > < / figure > < / p >
< p > 如果能解包应该可以得到脚本文件upsetting.sh< / p >
< figure class = "highlight plain" > < table > < tr > < td class = "gutter" > < pre > < span class = "line" > 1< / span > < br > < span class = "line" > 2< / span > < br > < span class = "line" > 3< / span > < br > < span class = "line" > 4< / span > < br > < / pre > < / td > < td class = "code" > < pre > < span class = "line" > #!/bin/sh< / span > < br > < span class = "line" > nvram set ssh_en=1< / span > < br > < span class = "line" > nvram set flag_init_root_pwd=1< / span > < br > < span class = "line" > nvram commit< / span > < br > < / pre > < / td > < / tr > < / table > < / figure >
< p > 执行脚本文件upsetting.sh后, 将ssh_en设置为1, 同时设置了flag_init_root_pwd项。当正式启动时, /usr/sbin/boot_check脚本检测到flag_init_root_pwd=1时, 自动修改root用户密码, 具体脚本为: < br > < figure class = "highlight plain" > < table > < tr > < td class = "gutter" > < pre > < span class = "line" > 1< / span > < br > < span class = "line" > 2< / span > < br > < span class = "line" > 3< / span > < br > < span class = "line" > 4< / span > < br > < span class = "line" > 5< / span > < br > < span class = "line" > 6< / span > < br > < span class = "line" > 7< / span > < br > < / pre > < / td > < td class = "code" > < pre > < span class = "line" > flg_init_pwd=`nvram get flag_init_root_pwd`< / span > < br > < span class = "line" > if [ " $flg_init_pwd" = " 1" ]; then< / span > < br > < span class = "line" > init_pwd=`mkxqimage -I`< / span > < br > < span class = "line" > (echo $init_pwd; sleep 1; echo $init_pwd) | passwd root< / span > < br > < span class = "line" > nvram unset flag_init_root_pwd< / span > < br > < span class = "line" > nvram commit< / span > < br > < span class = "line" > fi< / span > < br > < / pre > < / td > < / tr > < / table > < / figure > < / p >
< p > 初始密码是mkxqimage -I的结果, 实际是根据路由器的序列号计算得到。路由器的序列号印在底盖上, 12位数字, 如: 561000088888< / p >
< p > 初始密码计算算法为:< / p >
< p > < code > substr(md5(SN+" A2E371B0-B34B-48A5-8C40-A7133F3B5D88" ), 0, 8)< / code > < / p >
< p > < strong > < em > A2E371B0-B34B-48A5-8C40-A7133F3B5D88< / em > < / strong > 为分析mkxqimage得到的salt< / p >
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2019-03-28 07:55:23 +00:00
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< span class = "site-state-item-name" > 分类< / span >
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< i class = "fa fa-fw fa-github" > < / i > GitHub< / a >
< / span >
< span class = "links-of-author-item" >
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< i class = "fa fa-fw fa-weibo" > < / i > Weibo< / a >
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< div class = "post-toc-content" > < ol class = "nav" > < li class = "nav-item nav-level-1" > < a class = "nav-link" href = "#小米固件工具mkxqimage" > < span class = "nav-number" > 1.< / span > < span class = "nav-text" > 小米固件工具mkxqimage< / span > < / a > < ol class = "nav-child" > < li class = "nav-item nav-level-2" > < a class = "nav-link" href = "#固件解包" > < span class = "nav-number" > 1.1.< / span > < span class = "nav-text" > 固件解包< / span > < / a > < / li > < li class = "nav-item nav-level-2" > < a class = "nav-link" href = "#固件打包" > < span class = "nav-number" > 1.2.< / span > < span class = "nav-text" > 固件打包< / span > < / a > < / li > < li class = "nav-item nav-level-2" > < a class = "nav-link" href = "#固件格式" > < span class = "nav-number" > 1.3.< / span > < span class = "nav-text" > 固件格式< / span > < / a > < / li > < li class = "nav-item nav-level-2" > < a class = "nav-link" href = "#小米开启ssh工具包" > < span class = "nav-number" > 1.4.< / span > < span class = "nav-text" > 小米开启ssh工具包< / span > < / a > < / li > < / ol > < / li > < / ol > < / div >
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< div class = "copyright" > © < span itemprop = "copyrightYear" > 2019< / span >
< span class = "with-love" >
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< span class = "author" itemprop = "copyrightHolder" > Cool-Y< / span >
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< div class = "back-to-top" >
< i class = "fa fa-arrow-up" > < / i >
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< script type = "text/javascript" >
if (Object.prototype.toString.call(window.Promise) !== '[object Function]') {
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oauth: {
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gitment.render('gitment-container');
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< script type = "text/javascript" >
// Popup Window;
var isfetched = false;
var isXml = true;
// Search DB path;
var search_path = "search.xml";
if (search_path.length === 0) {
search_path = "search.xml";
} else if (/json$/i.test(search_path)) {
isXml = false;
}
var path = "/" + search_path;
// monitor main search box;
var onPopupClose = function (e) {
$('.popup').hide();
$('#local-search-input').val('');
$('.search-result-list').remove();
$('#no-result').remove();
$(".local-search-pop-overlay").remove();
$('body').css('overflow', '');
}
function proceedsearch() {
$("body")
.append('< div class = "search-popup-overlay local-search-pop-overlay" > < / div > ')
.css('overflow', 'hidden');
$('.search-popup-overlay').click(onPopupClose);
$('.popup').toggle();
var $localSearchInput = $('#local-search-input');
$localSearchInput.attr("autocapitalize", "none");
$localSearchInput.attr("autocorrect", "off");
$localSearchInput.focus();
}
// search function;
var searchFunc = function(path, search_id, content_id) {
'use strict';
// start loading animation
$("body")
.append('< div class = "search-popup-overlay local-search-pop-overlay" > ' +
'< div id = "search-loading-icon" > ' +
'< i class = "fa fa-spinner fa-pulse fa-5x fa-fw" > < / i > ' +
'< / div > ' +
'< / div > ')
.css('overflow', 'hidden');
$("#search-loading-icon").css('margin', '20% auto 0 auto').css('text-align', 'center');
$.ajax({
url: path,
dataType: isXml ? "xml" : "json",
async: true,
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content: $("content",this).text(),
url: $("url" , this).text()
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}).get() : res;
var input = document.getElementById(search_id);
var resultContent = document.getElementById(content_id);
var inputEventFunction = function() {
var searchText = input.value.trim().toLowerCase();
var keywords = searchText.split(/[\s\-]+/);
if (keywords.length > 1) {
keywords.push(searchText);
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var resultItems = [];
if (searchText.length > 0) {
// perform local searching
datas.forEach(function(data) {
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var hitCount = 0;
var searchTextCount = 0;
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var content = data.content.trim().replace(/< [^>]+>/g,"");
var contentInLowerCase = content.toLowerCase();
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startPosition = position + wordLen;
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return index;
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indexOfTitle = indexOfTitle.concat(getIndexByWord(keyword, titleInLowerCase, false));
indexOfContent = indexOfContent.concat(getIndexByWord(keyword, contentInLowerCase, false));
});
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isMatch = true;
hitCount = indexOfTitle.length + indexOfContent.length;
}
}
// show search results
if (isMatch) {
// sort index by position of keyword
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index.sort(function (itemLeft, itemRight) {
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});
});
// merge hits into slices
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var item = index[index.length - 1];
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var hits = [];
var searchTextCountInSlice = 0;
while (position + word.length < = end & & index.length != 0) {
if (word === searchText) {
searchTextCountInSlice++;
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hits.push({position: position, length: word.length});
var wordEnd = position + word.length;
// move to next position of hit
index.pop();
while (index.length != 0) {
item = index[index.length - 1];
position = item.position;
word = item.word;
if (wordEnd > position) {
index.pop();
} else {
break;
}
}
}
searchTextCount += searchTextCountInSlice;
return {
hits: hits,
start: start,
end: end,
searchTextCount: searchTextCountInSlice
};
}
var slicesOfTitle = [];
if (indexOfTitle.length != 0) {
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var item = indexOfContent[indexOfContent.length - 1];
var position = item.position;
var word = item.word;
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var end = position + 80;
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start = 0;
}
if (end < position + word . length ) {
end = position + word.length;
}
if(end > content.length){
end = content.length;
}
slicesOfContent.push(mergeIntoSlice(content, start, end, indexOfContent));
}
// sort slices in content by search text's count and hits' count
slicesOfContent.sort(function (sliceLeft, sliceRight) {
if (sliceLeft.searchTextCount !== sliceRight.searchTextCount) {
return sliceRight.searchTextCount - sliceLeft.searchTextCount;
} else if (sliceLeft.hits.length !== sliceRight.hits.length) {
return sliceRight.hits.length - sliceLeft.hits.length;
} else {
return sliceLeft.start - sliceRight.start;
}
});
// select top N slices in content
var upperBound = parseInt('1');
if (upperBound >= 0) {
slicesOfContent = slicesOfContent.slice(0, upperBound);
}
// highlight title and content
function highlightKeyword(text, slice) {
var result = '';
var prevEnd = slice.start;
slice.hits.forEach(function (hit) {
result += text.substring(prevEnd, hit.position);
var end = hit.position + hit.length;
result += '< b class = "search-keyword" > ' + text.substring(hit.position, end) + '< / b > ';
prevEnd = end;
});
result += text.substring(prevEnd, slice.end);
return result;
}
var resultItem = '';
if (slicesOfTitle.length != 0) {
resultItem += "< li > < a href = '" + articleUrl + "' class = 'search-result-title' > " + highlightKeyword(title, slicesOfTitle[0]) + "< / a > ";
} else {
resultItem += "< li > < a href = '" + articleUrl + "' class = 'search-result-title' > " + title + "< / a > ";
}
slicesOfContent.forEach(function (slice) {
resultItem += "< a href = '" + articleUrl + "' > " +
"< p class = \"search-result\" > " + highlightKeyword(content, slice) +
"...< / p > " + "< / a > ";
});
resultItem += "< / li > ";
resultItems.push({
item: resultItem,
searchTextCount: searchTextCount,
hitCount: hitCount,
id: resultItems.length
});
}
})
};
if (keywords.length === 1 & & keywords[0] === "") {
resultContent.innerHTML = '< div id = "no-result" > < i class = "fa fa-search fa-5x" / > < / div > '
} else if (resultItems.length === 0) {
resultContent.innerHTML = '< div id = "no-result" > < i class = "fa fa-frown-o fa-5x" / > < / div > '
} else {
resultItems.sort(function (resultLeft, resultRight) {
if (resultLeft.searchTextCount !== resultRight.searchTextCount) {
return resultRight.searchTextCount - resultLeft.searchTextCount;
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return resultRight.hitCount - resultLeft.hitCount;
} else {
return resultRight.id - resultLeft.id;
}
});
var searchResultList = '< ul class = \"search-result-list\" > ';
resultItems.forEach(function (result) {
searchResultList += result.item;
})
searchResultList += "< / ul > ";
resultContent.innerHTML = searchResultList;
}
}
if ('auto' === 'auto') {
input.addEventListener('input', inputEventFunction);
} else {
$('.search-icon').click(inputEventFunction);
input.addEventListener('keypress', function (event) {
if (event.keyCode === 13) {
inputEventFunction();
}
});
}
// remove loading animation
$(".local-search-pop-overlay").remove();
$('body').css('overflow', '');
proceedsearch();
}
});
}
// handle and trigger popup window;
$('.popup-trigger').click(function(e) {
e.stopPropagation();
if (isfetched === false) {
searchFunc(path, 'local-search-input', 'local-search-result');
} else {
proceedsearch();
};
});
$('.popup-btn-close').click(onPopupClose);
$('.popup').click(function(e){
e.stopPropagation();
});
$(document).on('keyup', function (event) {
var shouldDismissSearchPopup = event.which === 27 & &
$('.search-popup').is(':visible');
if (shouldDismissSearchPopup) {
onPopupClose();
}
});
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< script > AV . initialize ( "EWwoJgHNdlj6iBjiFlMcabUO-gzGzoHsz" , "x8FxDrYG79C8YFrTww9ljo8K" ) ; < / script >
< script >
function showTime(Counter) {
var query = new AV.Query(Counter);
var entries = [];
var $visitors = $(".leancloud_visitors");
$visitors.each(function () {
entries.push( $(this).attr("id").trim() );
});
query.containedIn('url', entries);
query.find()
.done(function (results) {
var COUNT_CONTAINER_REF = '.leancloud-visitors-count';
if (results.length === 0) {
$visitors.find(COUNT_CONTAINER_REF).text(0);
return;
}
for (var i = 0; i < results.length ; i + + ) {
var item = results[i];
var url = item.get('url');
var time = item.get('time');
var element = document.getElementById(url);
$(element).find(COUNT_CONTAINER_REF).text(time);
}
for(var i = 0; i < entries.length ; i + + ) {
var url = entries[i];
var element = document.getElementById(url);
var countSpan = $(element).find(COUNT_CONTAINER_REF);
if( countSpan.text() == '') {
countSpan.text(0);
}
}
})
.fail(function (object, error) {
console.log("Error: " + error.code + " " + error.message);
});
}
function addCount(Counter) {
var $visitors = $(".leancloud_visitors");
var url = $visitors.attr('id').trim();
var title = $visitors.attr('data-flag-title').trim();
var query = new AV.Query(Counter);
query.equalTo("url", url);
query.find({
success: function(results) {
if (results.length > 0) {
var counter = results[0];
counter.fetchWhenSave(true);
counter.increment("time");
counter.save(null, {
success: function(counter) {
var $element = $(document.getElementById(url));
$element.find('.leancloud-visitors-count').text(counter.get('time'));
},
error: function(counter, error) {
console.log('Failed to save Visitor num, with error message: ' + error.message);
}
});
} else {
var newcounter = new Counter();
/* Set ACL */
var acl = new AV.ACL();
acl.setPublicReadAccess(true);
acl.setPublicWriteAccess(true);
newcounter.setACL(acl);
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newcounter.set("title", title);
newcounter.set("url", url);
newcounter.set("time", 1);
newcounter.save(null, {
success: function(newcounter) {
var $element = $(document.getElementById(url));
$element.find('.leancloud-visitors-count').text(newcounter.get('time'));
},
error: function(newcounter, error) {
console.log('Failed to create');
}
});
}
},
error: function(error) {
console.log('Error:' + error.code + " " + error.message);
}
});
}
$(function() {
var Counter = AV.Object.extend("Counter");
if ($('.leancloud_visitors').length == 1) {
addCount(Counter);
} else if ($('.post-title-link').length > 1) {
showTime(Counter);
}
});
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var bp = document.createElement('script');
var curProtocol = window.location.protocol.split(':')[0];
if (curProtocol === 'https') {
bp.src = 'https://zz.bdstatic.com/linksubmit/push.js';
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else {
bp.src = 'http://push.zhanzhang.baidu.com/push.js';
}
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