二进制插桩~

  • 说点什么
  • 插桩是啥
  • 为啥要插桩
    • 源代码插桩
    • 二进制插桩
  • 如何插桩
    • 两种主要方式和三种执行模式
      • 方式1：
      • 方式2：
      • 第一种模式：
      • 第二种模式：
      • 第三种模式：
  • 插桩实例
    • Pin 动态二进制插桩

说点什么

虽然不是主要做这个的，但是安全工程师的知识面太大咯，
学习其它科目的知识有助于锻炼思维，所以记一下学习过程

插桩是啥

动态二进制插桩（dynamic binary instrumentation ,DBI）技术是一种通过注入插桩代码，来分析二进制应用程序在运行时的行为的方法。

动态二进制插桩技术，可以在不影响程序动态执行结果的前提下，按照用户的分析需求，在程序执行过程中插入特定分析代码，实现对程序动态执行过程的监控与分析。

为啥要插桩

源代码插桩

大家调试程序一定试过这样的方法：

。。。。。
printf("牛奶颜色：%s\n", milk_color);
。。。。

这就是源代码插桩，方便快捷，如果牛奶颜色是黑色，程序就出错了。

二进制插桩

将插桩代码注入正在运行的进程，也就能调试程序了…

mov esp, ebp
我插，我看~
pop ebp

例如这样能看到ebp了，不过过程比源代码插桩更繁琐，需要拆解。

如何插桩

两种主要方式和三种执行模式

方式1：

在动态二进制系统的控制下从头到尾执行程序。

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系统
控制
程序

方式2：

动态二进制系统可以被附加到一个已经运行的程序中

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.taskTextOutsideRight.clickable{cursor:pointer;fill:#003163 !important;font-weight:bold}#mermaid-svg-SYAYEzDvd4mZsgmy .taskText0,#mermaid-svg-SYAYEzDvd4mZsgmy .taskText1,#mermaid-svg-SYAYEzDvd4mZsgmy .taskText2,#mermaid-svg-SYAYEzDvd4mZsgmy .taskText3{fill:#fff}#mermaid-svg-SYAYEzDvd4mZsgmy .task0,#mermaid-svg-SYAYEzDvd4mZsgmy .task1,#mermaid-svg-SYAYEzDvd4mZsgmy .task2,#mermaid-svg-SYAYEzDvd4mZsgmy .task3{fill:#8a90dd;stroke:#534fbc}#mermaid-svg-SYAYEzDvd4mZsgmy .taskTextOutside0,#mermaid-svg-SYAYEzDvd4mZsgmy .taskTextOutside2{fill:#000}#mermaid-svg-SYAYEzDvd4mZsgmy .taskTextOutside1,#mermaid-svg-SYAYEzDvd4mZsgmy .taskTextOutside3{fill:#000}#mermaid-svg-SYAYEzDvd4mZsgmy .active0,#mermaid-svg-SYAYEzDvd4mZsgmy .active1,#mermaid-svg-SYAYEzDvd4mZsgmy .active2,#mermaid-svg-SYAYEzDvd4mZsgmy .active3{fill:#bfc7ff;stroke:#534fbc}#mermaid-svg-SYAYEzDvd4mZsgmy .activeText0,#mermaid-svg-SYAYEzDvd4mZsgmy .activeText1,#mermaid-svg-SYAYEzDvd4mZsgmy .activeText2,#mermaid-svg-SYAYEzDvd4mZsgmy 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arial;font-family:var(--mermaid-font-family);font-size:10px}#mermaid-svg-SYAYEzDvd4mZsgmy g.classGroup text .title{font-weight:bolder}#mermaid-svg-SYAYEzDvd4mZsgmy g.clickable{cursor:pointer}#mermaid-svg-SYAYEzDvd4mZsgmy g.classGroup rect{fill:#ECECFF;stroke:#9370db}#mermaid-svg-SYAYEzDvd4mZsgmy g.classGroup line{stroke:#9370db;stroke-width:1}#mermaid-svg-SYAYEzDvd4mZsgmy .classLabel .box{stroke:none;stroke-width:0;fill:#ECECFF;opacity:0.5}#mermaid-svg-SYAYEzDvd4mZsgmy .classLabel .label{fill:#9370db;font-size:10px}#mermaid-svg-SYAYEzDvd4mZsgmy .relation{stroke:#9370db;stroke-width:1;fill:none}#mermaid-svg-SYAYEzDvd4mZsgmy .dashed-line{stroke-dasharray:3}#mermaid-svg-SYAYEzDvd4mZsgmy #compositionStart{fill:#9370db;stroke:#9370db;stroke-width:1}#mermaid-svg-SYAYEzDvd4mZsgmy #compositionEnd{fill:#9370db;stroke:#9370db;stroke-width:1}#mermaid-svg-SYAYEzDvd4mZsgmy #aggregationStart{fill:#ECECFF;stroke:#9370db;stroke-width:1}#mermaid-svg-SYAYEzDvd4mZsgmy #aggregationEnd{fill:#ECECFF;stroke:#9370db;stroke-width:1}#mermaid-svg-SYAYEzDvd4mZsgmy #dependencyStart{fill:#9370db;stroke:#9370db;stroke-width:1}#mermaid-svg-SYAYEzDvd4mZsgmy #dependencyEnd{fill:#9370db;stroke:#9370db;stroke-width:1}#mermaid-svg-SYAYEzDvd4mZsgmy #extensionStart{fill:#9370db;stroke:#9370db;stroke-width:1}#mermaid-svg-SYAYEzDvd4mZsgmy #extensionEnd{fill:#9370db;stroke:#9370db;stroke-width:1}#mermaid-svg-SYAYEzDvd4mZsgmy .commit-id,#mermaid-svg-SYAYEzDvd4mZsgmy .commit-msg,#mermaid-svg-SYAYEzDvd4mZsgmy .branch-label{fill:lightgrey;color:lightgrey;font-family:'trebuchet ms', verdana, arial;font-family:var(--mermaid-font-family)}#mermaid-svg-SYAYEzDvd4mZsgmy .pieTitleText{text-anchor:middle;font-size:25px;fill:#000;font-family:'trebuchet ms', verdana, arial;font-family:var(--mermaid-font-family)}#mermaid-svg-SYAYEzDvd4mZsgmy .slice{font-family:'trebuchet ms', verdana, arial;font-family:var(--mermaid-font-family)}#mermaid-svg-SYAYEzDvd4mZsgmy g.stateGroup text{fill:#9370db;stroke:none;font-size:10px;font-family:'trebuchet ms', verdana, arial;font-family:var(--mermaid-font-family)}#mermaid-svg-SYAYEzDvd4mZsgmy g.stateGroup text{fill:#9370db;fill:#333;stroke:none;font-size:10px}#mermaid-svg-SYAYEzDvd4mZsgmy g.statediagram-cluster .cluster-label text{fill:#333}#mermaid-svg-SYAYEzDvd4mZsgmy g.stateGroup .state-title{font-weight:bolder;fill:#000}#mermaid-svg-SYAYEzDvd4mZsgmy g.stateGroup rect{fill:#ECECFF;stroke:#9370db}#mermaid-svg-SYAYEzDvd4mZsgmy g.stateGroup line{stroke:#9370db;stroke-width:1}#mermaid-svg-SYAYEzDvd4mZsgmy .transition{stroke:#9370db;stroke-width:1;fill:none}#mermaid-svg-SYAYEzDvd4mZsgmy .stateGroup .composit{fill:white;border-bottom:1px}#mermaid-svg-SYAYEzDvd4mZsgmy .stateGroup .alt-composit{fill:#e0e0e0;border-bottom:1px}#mermaid-svg-SYAYEzDvd4mZsgmy .state-note{stroke:#aa3;fill:#fff5ad}#mermaid-svg-SYAYEzDvd4mZsgmy .state-note text{fill:black;stroke:none;font-size:10px}#mermaid-svg-SYAYEzDvd4mZsgmy .stateLabel .box{stroke:none;stroke-width:0;fill:#ECECFF;opacity:0.7}#mermaid-svg-SYAYEzDvd4mZsgmy .edgeLabel text{fill:#333}#mermaid-svg-SYAYEzDvd4mZsgmy .stateLabel text{fill:#000;font-size:10px;font-weight:bold;font-family:'trebuchet ms', verdana, arial;font-family:var(--mermaid-font-family)}#mermaid-svg-SYAYEzDvd4mZsgmy .node circle.state-start{fill:black;stroke:black}#mermaid-svg-SYAYEzDvd4mZsgmy .node circle.state-end{fill:black;stroke:white;stroke-width:1.5}#mermaid-svg-SYAYEzDvd4mZsgmy #statediagram-barbEnd{fill:#9370db}#mermaid-svg-SYAYEzDvd4mZsgmy .statediagram-cluster rect{fill:#ECECFF;stroke:#9370db;stroke-width:1px}#mermaid-svg-SYAYEzDvd4mZsgmy .statediagram-cluster rect.outer{rx:5px;ry:5px}#mermaid-svg-SYAYEzDvd4mZsgmy .statediagram-state .divider{stroke:#9370db}#mermaid-svg-SYAYEzDvd4mZsgmy .statediagram-state .title-state{rx:5px;ry:5px}#mermaid-svg-SYAYEzDvd4mZsgmy .statediagram-cluster.statediagram-cluster .inner{fill:white}#mermaid-svg-SYAYEzDvd4mZsgmy .statediagram-cluster.statediagram-cluster-alt .inner{fill:#e0e0e0}#mermaid-svg-SYAYEzDvd4mZsgmy .statediagram-cluster .inner{rx:0;ry:0}#mermaid-svg-SYAYEzDvd4mZsgmy .statediagram-state rect.basic{rx:5px;ry:5px}#mermaid-svg-SYAYEzDvd4mZsgmy .statediagram-state rect.divider{stroke-dasharray:10,10;fill:#efefef}#mermaid-svg-SYAYEzDvd4mZsgmy .note-edge{stroke-dasharray:5}#mermaid-svg-SYAYEzDvd4mZsgmy .statediagram-note rect{fill:#fff5ad;stroke:#aa3;stroke-width:1px;rx:0;ry:0}:root{--mermaid-font-family: '"trebuchet ms", verdana, arial';--mermaid-font-family: "Comic Sans MS", "Comic Sans", cursive}#mermaid-svg-SYAYEzDvd4mZsgmy .error-icon{fill:#522}#mermaid-svg-SYAYEzDvd4mZsgmy .error-text{fill:#522;stroke:#522}#mermaid-svg-SYAYEzDvd4mZsgmy .edge-thickness-normal{stroke-width:2px}#mermaid-svg-SYAYEzDvd4mZsgmy .edge-thickness-thick{stroke-width:3.5px}#mermaid-svg-SYAYEzDvd4mZsgmy .edge-pattern-solid{stroke-dasharray:0}#mermaid-svg-SYAYEzDvd4mZsgmy .edge-pattern-dashed{stroke-dasharray:3}#mermaid-svg-SYAYEzDvd4mZsgmy .edge-pattern-dotted{stroke-dasharray:2}#mermaid-svg-SYAYEzDvd4mZsgmy .marker{fill:#333}#mermaid-svg-SYAYEzDvd4mZsgmy .marker.cross{stroke:#333}:root { --mermaid-font-family: "trebuchet ms", verdana, arial;} #mermaid-svg-SYAYEzDvd4mZsgmy {color: rgba(0, 0, 0, 0.75);font: ;}

系统
附加到
程序

第一种模式：

JIT模式是最常见的实现方式，也是最常用的模式：
复制一个文件，进行修改，再执行

#mermaid-svg-dArOeMjfiiTRwi2D .label{font-family:'trebuchet ms', verdana, arial;font-family:var(--mermaid-font-family);fill:#333;color:#333}#mermaid-svg-dArOeMjfiiTRwi2D .label text{fill:#333}#mermaid-svg-dArOeMjfiiTRwi2D .node rect,#mermaid-svg-dArOeMjfiiTRwi2D .node circle,#mermaid-svg-dArOeMjfiiTRwi2D .node ellipse,#mermaid-svg-dArOeMjfiiTRwi2D .node polygon,#mermaid-svg-dArOeMjfiiTRwi2D .node path{fill:#ECECFF;stroke:#9370db;stroke-width:1px}#mermaid-svg-dArOeMjfiiTRwi2D .node .label{text-align:center;fill:#333}#mermaid-svg-dArOeMjfiiTRwi2D .node.clickable{cursor:pointer}#mermaid-svg-dArOeMjfiiTRwi2D .arrowheadPath{fill:#333}#mermaid-svg-dArOeMjfiiTRwi2D .edgePath .path{stroke:#333;stroke-width:1.5px}#mermaid-svg-dArOeMjfiiTRwi2D .flowchart-link{stroke:#333;fill:none}#mermaid-svg-dArOeMjfiiTRwi2D .edgeLabel{background-color:#e8e8e8;text-align:center}#mermaid-svg-dArOeMjfiiTRwi2D .edgeLabel rect{opacity:0.9}#mermaid-svg-dArOeMjfiiTRwi2D .edgeLabel span{color:#333}#mermaid-svg-dArOeMjfiiTRwi2D .cluster rect{fill:#ffffde;stroke:#aa3;stroke-width:1px}#mermaid-svg-dArOeMjfiiTRwi2D .cluster text{fill:#333}#mermaid-svg-dArOeMjfiiTRwi2D div.mermaidTooltip{position:absolute;text-align:center;max-width:200px;padding:2px;font-family:'trebuchet ms', verdana, arial;font-family:var(--mermaid-font-family);font-size:12px;background:#ffffde;border:1px solid #aa3;border-radius:2px;pointer-events:none;z-index:100}#mermaid-svg-dArOeMjfiiTRwi2D .actor{stroke:#ccf;fill:#ECECFF}#mermaid-svg-dArOeMjfiiTRwi2D text.actor>tspan{fill:#000;stroke:none}#mermaid-svg-dArOeMjfiiTRwi2D .actor-line{stroke:grey}#mermaid-svg-dArOeMjfiiTRwi2D .messageLine0{stroke-width:1.5;stroke-dasharray:none;stroke:#333}#mermaid-svg-dArOeMjfiiTRwi2D .messageLine1{stroke-width:1.5;stroke-dasharray:2, 2;stroke:#333}#mermaid-svg-dArOeMjfiiTRwi2D #arrowhead path{fill:#333;stroke:#333}#mermaid-svg-dArOeMjfiiTRwi2D .sequenceNumber{fill:#fff}#mermaid-svg-dArOeMjfiiTRwi2D 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第二种模式：

解释模式

第三种模式：

探测模式，通过使用新指令来覆盖旧的指令，文件不复制

插桩实例

Pin 动态二进制插桩

Pin 是 Intel 公司研发的一个动态二进制插桩框架，可以在二进制程序运行过程中插入各种函数，以监控程序每一步的执行。
链接: 下载官网.
Pin 是一个闭源的框架，由 Pin 和 Pintool 组成。Pin 内部提供 API，用户使用 API 编写可以由 Pin 调用的动态链接库形式的插件，称为 Pintool。

通常插桩需要的两个组件都在 Pintool 中：

插桩代码（Instrumentation code）在什么位置插入插桩代码
分析代码（Analysis code）在选定的位置要执行的代码

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