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Tidied up FileSignatures.mjs

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n1474335 2019-11-08 17:34:25 +00:00
commit e61b7d598e
1 changed files with 227 additions and 4 deletions
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231
src/core/lib/FileSignatures.mjs
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@ -736,7 +736,7 @@ export const FILE_SIGNATURES = {
10: 0x56,
11: 0x45
},
extractor: null
extractor: extractWAV
},
{
name: "OGG audio",
@ -1870,7 +1870,7 @@ export const FILE_SIGNATURES = {
2: 0x4c,
3: 0x69
},
extractor: null
extractor: extractSQLITE
},
{
name: "BitTorrent link",
@ -1993,7 +1993,7 @@ export const FILE_SIGNATURES = {
6: 0x4c,
7: 0x65
},
extractor: null
extractor: extractEVT
},
{
name: "Windows Event Log",
@ -2009,7 +2009,7 @@ export const FILE_SIGNATURES = {
5: 0x6c,
6: 0x65
},
extractor: null
extractor: extractEVTX
},
{
name: "Windows Pagedump",
@ -2331,6 +2331,133 @@ export const FILE_SIGNATURES = {
19: 0x46
},
extractor: null
},
{
name: "Bash",
extension: "bash",
mime: "application/bash",
description: "",
signature: {
0: 0x23, // #!/bin/bash
1: 0x21,
2: 0x2f,
3: 0x62,
4: 0x69,
5: 0x6e,
6: 0x2f,
7: 0x62,
8: 0x61,
9: 0x73,
10: 0x68,
},
extractor: null
},
{
name: "Shell",
extension: "sh",
mime: "application/sh",
description: "",
signature: {
0: 0x23, // #!/bin/sh
1: 0x21,
2: 0x2f,
3: 0x62,
4: 0x69,
5: 0x6e,
6: 0x2f,
7: 0x73,
8: 0x68,
},
extractor: null
},
{
name: "Python",
extension: "py,pyc,pyd,pyo,pyw,pyz",
mime: "application/python",
description: "",
signature: {
0: 0x23, // #!/usr/bin/python(2|3)
1: 0x21,
2: 0x2f,
3: 0x75,
4: 0x73,
5: 0x72,
6: 0x2f,
7: 0x62,
8: 0x69,
9: 0x6e,
10: 0x2f,
11: 0x70,
12: 0x79,
13: 0x74,
14: 0x68,
15: 0x6f,
16: 0x6e,
17: [0x32, 0x33, 0xa, 0xd],
},
extractor: null
},
{
name: "Ruby",
extension: "rb",
mime: "application/ruby",
description: "",
signature: {
0: 0x23, // #!/usr/bin/ruby
1: 0x21,
2: 0x2f,
3: 0x75,
4: 0x73,
5: 0x72,
6: 0x2f,
7: 0x62,
8: 0x69,
9: 0x6e,
10: 0x2f,
11: 0x72,
12: 0x75,
13: 0x62,
14: 0x79,
},
extractor: null
},
{
name: "perl",
extension: "pl,pm,t,pod",
mime: "application/perl",
description: "",
signature: {
0: 0x23, // #!/usr/bin/perl
1: 0x21,
2: 0x2f,
3: 0x75,
4: 0x73,
5: 0x72,
6: 0x2f,
7: 0x62,
8: 0x69,
9: 0x6e,
10: 0x2f,
11: 0x70,
12: 0x65,
13: 0x72,
14: 0x6c,
},
extractor: null
},
{
name: "php",
extension: "php,phtml,php3,php4,php5,php7,phps,php-s,pht,phar",
mime: "application/php",
description: "",
signature: {
0: 0x3c, // <?php
1: 0x3f,
2: 0x70,
3: 0x68,
4: 0x70,
},
extractor: null
}
]
};
@ -2645,6 +2772,26 @@ export function extractBMP(bytes, offset) {
}
/**
* WAV extractor.
*
* @param {Uint8Array} bytes
* @param {Number} offset
* @returns {Uint8Array}
*/
export function extractWAV(bytes, offset) {
const stream = new Stream(bytes.slice(offset));
// Move to file size field.
stream.moveTo(4);
// Move to file size.
stream.moveTo(stream.readInt(4, "le") - 4);
return stream.carve();
}
/**
* FLV extractor.
*
@ -2732,6 +2879,31 @@ export function extractRTF(bytes, offset) {
}
/**
* SQLITE extractor.
*
* @param {Uint8Array} bytes
* @param {number} offset
* @returns {Uint8Array}
*/
export function extractSQLITE(bytes, offset) {
const stream = new Stream(bytes.slice(offset));
// Extract the size of the page.
stream.moveTo(16);
const pageSize = stream.readInt(2);
// Extract the number of pages.
stream.moveTo(28);
const numPages = stream.readInt(4);
// Move to the end of all the pages.
stream.moveTo(pageSize*numPages);
return stream.carve();
}
/**
* PList (XML) extractor.
*
@ -3159,3 +3331,54 @@ function readHuffmanCode(stream, table) {
return codeWithLength & 0xffff;
}
/**
* EVTX extractor.
*
* @param {Uint8Array} bytes
* @param {Number} offset
* @returns {Uint8Array}
*/
export function extractEVTX(bytes, offset) {
const stream = new Stream(bytes.slice(offset));
// Move to first ELFCHNK.
stream.moveTo(0x28);
const total = stream.readInt(4, "le") - 0x2c;
stream.moveForwardsBy(total);
while (stream.hasMore()) {
// Loop through ELFCHNKs.
if (stream.getBytes(7).join("") === "\x45\x6c\x66\x43\x68\x6e\x6b")
stream.moveForwardsBy(0xfff9);
else
break;
}
return stream.carve();
}
/**
* EVT extractor.
*
* @param {Uint8Array} bytes
* @param {Number} offset
* @returns {Uint8Array}
*/
export function extractEVT(bytes, offset) {
const stream = new Stream(bytes.slice(offset));
// Extract offset of EOF.
stream.moveTo(0x14);
const eofOffset = stream.readInt(4, "le");
stream.moveTo(eofOffset);
// Extract the size of the EOF.
const eofSize = stream.readInt(4, "le");
// Move past EOF.
stream.moveForwardsBy(eofSize-4);
return stream.carve();
}