diff --git a/src/core/config/Categories.js b/src/core/config/Categories.js index 270c1e1e..9118840d 100755 --- a/src/core/config/Categories.js +++ b/src/core/config/Categories.js @@ -66,6 +66,7 @@ const Categories = [ "Encode text", "Decode text", "Swap endianness", + "Decode VBE", ] }, { diff --git a/src/core/config/OperationConfig.js b/src/core/config/OperationConfig.js index 40571293..0c6f3a7a 100755 --- a/src/core/config/OperationConfig.js +++ b/src/core/config/OperationConfig.js @@ -38,7 +38,7 @@ import Tidy from "../operations/Tidy.js"; import Unicode from "../operations/Unicode.js"; import URL_ from "../operations/URL.js"; import UUID from "../operations/UUID.js"; - +import VBE from "../operations/VBE.js"; /** * Type definition for an OpConf. @@ -3204,6 +3204,13 @@ const OperationConfig = { } ] }, + "Decode VBE": { + description: "Decodes Microsoft VBE files that have been encoded with Microsoft's custom encoding.", + run: VBE.runDecodeVBE, + inputType: "string", + outputType: "string", + args: [] + }, "Syntax highlighter": { description: "Adds syntax highlighting to a range of source code languages. Note that this will not indent the code. Use one of the 'Beautify' operations for that.", run: Code.runSyntaxHighlight, diff --git a/src/core/operations/VBE.js b/src/core/operations/VBE.js new file mode 100644 index 00000000..cb2ed71c --- /dev/null +++ b/src/core/operations/VBE.js @@ -0,0 +1,258 @@ +/** + * Decodes Microsft Encoded VBS files that can be read and executed by cscript.exe/wscript.exe. + * This is a conversion of a Python script that was originally created by Didier Stevens (https://DidierStevens.com). + * + * @author bmwhitn [brian.m.whitney@outlook.com] + * + * @namespace + */ +const VBE = { + + /** + * @constant + * @default + */ + D_DECODE: [ + "", + "", + "", + "", + "", + "", + "", + "", + "", + "\x57\x6E\x7B", + "\x4A\x4C\x41", + "\x0B\x0B\x0B", + "\x0C\x0C\x0C", + "\x4A\x4C\x41", + "\x0E\x0E\x0E", + "\x0F\x0F\x0F", + "\x10\x10\x10", + "\x11\x11\x11", + "\x12\x12\x12", + "\x13\x13\x13", + "\x14\x14\x14", + "\x15\x15\x15", + "\x16\x16\x16", + "\x17\x17\x17", + "\x18\x18\x18", + "\x19\x19\x19", + "\x1A\x1A\x1A", + "\x1B\x1B\x1B", + "\x1C\x1C\x1C", + "\x1D\x1D\x1D", + "\x1E\x1E\x1E", + "\x1F\x1F\x1F", + "\x2E\x2D\x32", + "\x47\x75\x30", + "\x7A\x52\x21", + "\x56\x60\x29", + "\x42\x71\x5B", + "\x6A\x5E\x38", + "\x2F\x49\x33", + "\x26\x5C\x3D", + "\x49\x62\x58", + "\x41\x7D\x3A", + "\x34\x29\x35", + "\x32\x36\x65", + "\x5B\x20\x39", + "\x76\x7C\x5C", + "\x72\x7A\x56", + "\x43\x7F\x73", + "\x38\x6B\x66", + "\x39\x63\x4E", + "\x70\x33\x45", + "\x45\x2B\x6B", + "\x68\x68\x62", + "\x71\x51\x59", + "\x4F\x66\x78", + "\x09\x76\x5E", + "\x62\x31\x7D", + "\x44\x64\x4A", + "\x23\x54\x6D", + "\x75\x43\x71", + "\x4A\x4C\x41", + "\x7E\x3A\x60", + "\x4A\x4C\x41", + "\x5E\x7E\x53", + "\x40\x4C\x40", + "\x77\x45\x42", + "\x4A\x2C\x27", + "\x61\x2A\x48", + "\x5D\x74\x72", + "\x22\x27\x75", + "\x4B\x37\x31", + "\x6F\x44\x37", + "\x4E\x79\x4D", + "\x3B\x59\x52", + "\x4C\x2F\x22", + "\x50\x6F\x54", + "\x67\x26\x6A", + "\x2A\x72\x47", + "\x7D\x6A\x64", + "\x74\x39\x2D", + "\x54\x7B\x20", + "\x2B\x3F\x7F", + "\x2D\x38\x2E", + "\x2C\x77\x4C", + "\x30\x67\x5D", + "\x6E\x53\x7E", + "\x6B\x47\x6C", + "\x66\x34\x6F", + "\x35\x78\x79", + "\x25\x5D\x74", + "\x21\x30\x43", + "\x64\x23\x26", + "\x4D\x5A\x76", + "\x52\x5B\x25", + "\x63\x6C\x24", + "\x3F\x48\x2B", + "\x7B\x55\x28", + "\x78\x70\x23", + "\x29\x69\x41", + "\x28\x2E\x34", + "\x73\x4C\x09", + "\x59\x21\x2A", + "\x33\x24\x44", + "\x7F\x4E\x3F", + "\x6D\x50\x77", + "\x55\x09\x3B", + "\x53\x56\x55", + "\x7C\x73\x69", + "\x3A\x35\x61", + "\x5F\x61\x63", + "\x65\x4B\x50", + "\x46\x58\x67", + "\x58\x3B\x51", + "\x31\x57\x49", + "\x69\x22\x4F", + "\x6C\x6D\x46", + "\x5A\x4D\x68", + "\x48\x25\x7C", + "\x27\x28\x36", + "\x5C\x46\x70", + "\x3D\x4A\x6E", + "\x24\x32\x7A", + "\x79\x41\x2F", + "\x37\x3D\x5F", + "\x60\x5F\x4B", + "\x51\x4F\x5A", + "\x20\x42\x2C", + "\x36\x65\x57" + ], + + /** + * @constant + * @default + */ + D_COMBINATION: [ + 0, + 1, + 2, + 0, + 1, + 2, + 1, + 2, + 2, + 1, + 2, + 1, + 0, + 2, + 1, + 2, + 0, + 2, + 1, + 2, + 0, + 0, + 1, + 2, + 2, + 1, + 0, + 2, + 1, + 2, + 2, + 1, + 0, + 0, + 2, + 1, + 2, + 1, + 2, + 0, + 2, + 0, + 0, + 1, + 2, + 0, + 2, + 1, + 0, + 2, + 1, + 2, + 0, + 0, + 1, + 2, + 2, + 0, + 0, + 1, + 2, + 0, + 2, + 1 + ], + + /** + * @param {string} input + * @returns {string} + */ + decode: function (data) { + let result = ""; + let index = -1; + data = data.replace("@&", String.fromCharCode(10)); + data = data.replace("@#", String.fromCharCode(13)); + data = data.replace("@*", ">"); + data = data.replace("@!", "<"); + data = data.replace("@$", "@"); + for (let i = 0; i < data.length; i++) { + let byte = data.charCodeAt(i); + if (byte < 128){ + index++; + } + if ((9 === byte || 31 < byte && 128 > byte) && 60 !== byte && 62 !== byte && 64 !== byte) { + let char = VBE.D_DECODE[byte].charAt([VBE.D_COMBINATION[index % 64]]); + result = result.concat(char); + } + } + return result; + }, + + /** + * @param {string} input + * @param {Object[]} args + * @returns {string} + */ + runDecodeVBE: function (data, args) { + let matcher = /#@~\^......==(.+)......==\^#~@/gm, + result = "", + encodedData; + while ((encodedData = matcher.exec(data))) { + result = result.concat(VBE.decode(encodedData[1])); + } + return result; + }, +}; + +export default VBE; diff --git a/test/index.js b/test/index.js index 25059465..00d147fe 100644 --- a/test/index.js +++ b/test/index.js @@ -24,6 +24,7 @@ import "./tests/operations/Image.js"; import "./tests/operations/MorseCode.js"; import "./tests/operations/StrUtils.js"; import "./tests/operations/SeqUtils.js"; +import "./tests/operations/VBE.js" let allTestsPassing = true; const testStatusCounts = { diff --git a/test/tests/operations/VBE.js b/test/tests/operations/VBE.js new file mode 100644 index 00000000..d43f9b3e --- /dev/null +++ b/test/tests/operations/VBE.js @@ -0,0 +1,22 @@ +/** + * CharEnc tests. + * + * @author tlwr [toby@toby.codes] + * @copyright Crown Copyright 2017 + * @license Apache-2.0 + */ +import TestRegister from "../../TestRegister.js"; + +TestRegister.addTests([ + { + name: "VBE Decode", + input: "##@~^DgAAAA==\\ko$K6,JCV^GJqAQAAA==^#~@", + expectedOutput: "MsgBox \"Hello\"", + recipeConfig: [ + { + "op": "Decode VBE", + "args": [] + }, + ], + }, +]);