From c105df4f25a7cfdf7c3cec985a464f0af0d4248f Mon Sep 17 00:00:00 2001
From: luzhisheng <aiyingfeng110@qq.com>
Date: Thu, 20 Jul 2023 00:28:22 +0800
Subject: [PATCH] =?UTF-8?q?AST=E6=93=8D=E4=BD=9C=E4=B9=8Btemplate=E6=9E=84?=
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---
 .../10.AST操作之template构建节点/README.md    | 98 +++++++++++++++++++
 .../decode_obfuscator.js                      | 35 +++++++
 .../10.AST操作之template构建节点/encode.js    |  1 +
 3 files changed, 134 insertions(+)
 create mode 100644 AST抽象语法树/10.AST操作之template构建节点/README.md
 create mode 100644 AST抽象语法树/10.AST操作之template构建节点/decode_obfuscator.js
 create mode 100644 AST抽象语法树/10.AST操作之template构建节点/encode.js

diff --git a/AST抽象语法树/10.AST操作之template构建节点/README.md b/AST抽象语法树/10.AST操作之template构建节点/README.md
new file mode 100644
index 0000000..f431626
--- /dev/null
+++ b/AST抽象语法树/10.AST操作之template构建节点/README.md
@@ -0,0 +1,98 @@
+# AST操作之template构建节点
+
+它允许你使用自定义的代码模板来构建 AST 节点，而不需要手动创建和操作 AST 节点对象。
+
+需求：构建节点`var global_0 = 1,global_1 = 2,global_2 = 3;`
+
+```javascript
+const {parse} = require("@babel/parser");
+const types = require("@babel/types");
+const template = require("@babel/template").default;
+const generator = require("@babel/generator").default;
+
+let ast = parse("", {
+    sourceType: 'module',
+});
+
+// 定义源代码模板
+VAR_NODE = template(`var A = 1,B = 2, C = 3`);
+
+// 构建 AST 节点的数据
+let firstVar = types.identifier('global_0');
+let secondVar = types.identifier('global_1');
+let thirdVar = types.identifier('global_2');
+let newNode = VAR_NODE({A: firstVar, B: secondVar, C: thirdVar});
+ast.program.body.push(newNode);
+
+// 将 AST 节点转换为代码
+let {code} = generator(ast);
+console.log(code);
+```
+
+需求：构建节点_0x6f2ba4 = 666;
+
+```javascript
+const {parse} = require("@babel/parser");
+const types = require("@babel/types");
+const template = require("@babel/template").default;
+const generator = require("@babel/generator").default;
+
+let ast = parse("", {
+    sourceType: 'module',
+});
+
+// 定义源代码模板
+VAR_NODE = template('A = B');
+
+// 构建 AST 节点的数据
+let firstVar = types.identifier('_0x6f2ba4');
+let secondVar = types.valueToNode(666);
+let newNode = VAR_NODE({A: firstVar, B: secondVar});
+ast.program.body.push(newNode);
+
+// 将 AST 节点转换为代码
+let {code} = generator(ast);
+console.log(code);
+```
+
+需求：构建节点方法二_0x6f2ba4 = 666;
+
+ @babel/parser 中的 parseExpression 函数来解析值并将其转换为一个有效的表达式节点。请确保在 buildAST 函数中使用 parseExpression 来正确解析 "VALUE" 占位符：
+
+```javascript
+const template = require("@babel/template").default;
+const { parseExpression } = require("@babel/parser");
+const generate = require("@babel/generator").default;
+
+// 定义源代码模板
+const sourceCodeTemplate = `VARIABLE_NAME = VALUE;`;
+
+// 使用 @babel/template 构建 AST 节点
+function buildAST(variableName, value) {
+    // 将值解析为表达式节点，以创建一个有效的 AST 节点
+    const parsedValue = parseExpression(value.toString());
+
+    // 使用 @babel/template 创建带有正确替换的 AST 节点
+    const astTemplate = template(sourceCodeTemplate);
+    const astNode = astTemplate({
+        VARIABLE_NAME: variableName,
+        VALUE: parsedValue, // 使用有效的表达式节点替换 VALUE
+    });
+
+    return astNode;
+}
+
+// 将 AST 节点转换为代码
+function generateCodeFromAST(astNode) {
+    const { code } = generate(astNode);
+    return code;
+}
+
+// 测试代码
+const variableName = "_0x6f2ba4";
+const value = 666;
+const astNode = buildAST(variableName, value);
+const generatedCode = generateCodeFromAST(astNode);
+
+console.log(generatedCode);
+```
\ No newline at end of file
diff --git a/AST抽象语法树/10.AST操作之template构建节点/decode_obfuscator.js b/AST抽象语法树/10.AST操作之template构建节点/decode_obfuscator.js
new file mode 100644
index 0000000..dbad906
--- /dev/null
+++ b/AST抽象语法树/10.AST操作之template构建节点/decode_obfuscator.js
@@ -0,0 +1,35 @@
+const template = require("@babel/template").default;
+const { parseExpression } = require("@babel/parser");
+const generate = require("@babel/generator").default;
+
+// 定义源代码模板
+const sourceCodeTemplate = `VARIABLE_NAME = VALUE;`;
+
+// 使用 @babel/template 构建 AST 节点
+function buildAST(variableName, value) {
+    // 将值解析为表达式节点，以创建一个有效的 AST 节点
+    const parsedValue = parseExpression(value.toString());
+
+    // 使用 @babel/template 创建带有正确替换的 AST 节点
+    const astTemplate = template(sourceCodeTemplate);
+    const astNode = astTemplate({
+        VARIABLE_NAME: variableName,
+        VALUE: parsedValue, // 使用有效的表达式节点替换 VALUE
+    });
+
+    return astNode;
+}
+
+// 将 AST 节点转换为代码
+function generateCodeFromAST(astNode) {
+    const { code } = generate(astNode);
+    return code;
+}
+
+// 测试代码
+const variableName = "_0x6f2ba4";
+const value = 666;
+const astNode = buildAST(variableName, value);
+const generatedCode = generateCodeFromAST(astNode);
+
+console.log(generatedCode);
diff --git a/AST抽象语法树/10.AST操作之template构建节点/encode.js b/AST抽象语法树/10.AST操作之template构建节点/encode.js
new file mode 100644
index 0000000..34e59ae
--- /dev/null
+++ b/AST抽象语法树/10.AST操作之template构建节点/encode.js
@@ -0,0 +1 @@
+var global_0 = 1,global_1 = 2,global_2 = 3;
\ No newline at end of file