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n1073645 2019-11-12 11:06:10 +00:00
parent d3c13b118d d3473a7462
commit 9eda670026
3 changed files with 23 additions and 22 deletions
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2
package-lock.json generated
View File

@ -1,6 +1,6 @@
{
"name": "cyberchef",
"version": "9.11.0",
"version": "9.11.2",
"lockfileVersion": 1,
"requires": true,
"dependencies": {

2
package.json
View File

@ -1,6 +1,6 @@
{
"name": "cyberchef",
"version": "9.11.0",
"version": "9.11.2",
"description": "The Cyber Swiss Army Knife for encryption, encoding, compression and data analysis.",
"author": "n1474335 <n1474335@gmail.com>",
"homepage": "https://gchq.github.io/CyberChef",

41
src/core/lib/FileSignatures.mjs
View File

@ -2583,10 +2583,10 @@ export function extractGIF(bytes, offset) {
// Move to Graphic Control Extension for frame #1.
stream.continueUntil([0x21, 0xf9]);
stream.moveForwardsBy(2);
while (stream.hasMore()) {
while (stream.hasMore()) {
// Move to Image descriptor.
stream.moveForwardsBy(stream.getBytes(1)[0]+1);
stream.moveForwardsBy(stream.readInt(1) + 1);
// Move past Image descriptor to the image data.
stream.moveForwardsBy(11);
@ -2594,14 +2594,16 @@ export function extractGIF(bytes, offset) {
// Loop until next Graphic Control Extension.
while (stream.getBytes(2) !== [0x21, 0xf9]) {
stream.moveBackwardsBy(2);
stream.moveForwardsBy(stream.getBytes(1)[0]);
if (!stream.getBytes(1)[0])
stream.moveForwardsBy(stream.readInt(1));
if (!stream.readInt(1))
break;
stream.moveBackwardsBy(1);
}
// When the end of the file is [0x00, 0x3b], end.
if (stream.getBytes(1)[0] === 0x3b)
if (stream.readInt(1) === 0x3b)
break;
stream.moveForwardsBy(1);
}
return stream.carve();
@ -2769,6 +2771,7 @@ export function extractBMP(bytes, offset) {
return stream.carve();
}
/**
* WAV extractor.
*
@ -2783,7 +2786,7 @@ export function extractWAV(bytes, offset) {
stream.moveTo(4);
// Move to file size.
stream.moveTo(stream.readInt(4, "le")-4);
stream.moveTo(stream.readInt(4, "le") - 4);
return stream.carve();
}
@ -2886,18 +2889,17 @@ export function extractRTF(bytes, offset) {
export function extractSQLITE(bytes, offset) {
const stream = new Stream(bytes.slice(offset));
stream.moveTo(16);
// Extract the size of the page.
stream.moveTo(16);
const pageSize = stream.readInt(2);
stream.moveTo(28);
// 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();
}
@ -3010,10 +3012,10 @@ export function extractBZIP2(bytes, offset) {
[0xbb, 0x92, 0x29, 0xc2, 0x84],
[0x5d, 0xc9, 0x14, 0xe1, 0x42],
[0x2e, 0xe4, 0x8a, 0x70, 0xa1],
[0x17, 0x72, 0x45, 0x38, 0x50]];
[0x17, 0x72, 0x45, 0x38, 0x50]
];
for (let i = 0; i < lookingfor.length; i++) {
// Continue until an EOF.
stream.continueUntil(lookingfor[i]);
if (stream.getBytes(5).join("") === lookingfor[i].join(""))
@ -3340,13 +3342,13 @@ function readHuffmanCode(stream, table) {
*/
export function extractEVTX(bytes, offset) {
const stream = new Stream(bytes.slice(offset));
stream.moveTo(0x28);
// Move to first ELFCHNK.
stream.moveTo(0x28);
const total = stream.readInt(4, "le") - 0x2c;
stream.moveForwardsBy(total);
while (stream.hasMore()) {
while (stream.hasMore()) {
// Loop through ELFCHNKs.
if (stream.getBytes(7).join("") !== [0x45, 0x6c, 0x66, 0x43, 0x68, 0x6e, 0x6b].join(""))
break;
@ -3367,16 +3369,15 @@ export function extractEVTX(bytes, offset) {
export function extractEVT(bytes, offset) {
const stream = new Stream(bytes.slice(offset));
stream.moveTo(0x14);
// Extract offset of EOF.
const eofoffset = stream.readInt(4, "le");
stream.moveTo(eofoffset);
stream.moveTo(0x14);
const eofOffset = stream.readInt(4, "le");
stream.moveTo(eofOffset);
// Extract the size of the EOF.
const eofsize = stream.readInt(4, "le");
const eofSize = stream.readInt(4, "le");
// Move past EOF.
stream.moveForwardsBy(eofsize-4);
stream.moveForwardsBy(eofSize-4);
return stream.carve();
}