Mirror/CyberChef
1
0
Fork 0
mirror of https://github.com/gchq/CyberChef.git synced 2024-11-02 14:11:02 +01:00
Code Issues Packages Projects Releases Wiki Activity

Merge branch 'cbeuw-toHex'

Browse Source
This commit is contained in:
n1474335 2020-02-13 14:17:58 +00:00
commit a5bc1c6f9e
5 changed files with 181 additions and 35 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

1
src/core/Ingredient.mjs
View File

@ -113,6 +113,7 @@ class Ingredient {
return data;
}
case "number":
if (data === null) return data;
number = parseFloat(data);
if (isNaN(number)) {
const sample = Utils.truncate(data.toString(), 10);

36
src/core/lib/Hex.mjs
View File

@ -23,25 +23,39 @@ import Utils from "../Utils.mjs";
*
* // returns "0a:14:1e"
* toHex([10,20,30], ":");
*
* // returns "0x0a,0x14,0x1e"
* toHex([10,20,30], "0x", 2, ",")
*/
export function toHex(data, delim=" ", padding=2) {
export function toHex(data, delim=" ", padding=2, extraDelim="", lineSize=0) {
if (!data) return "";
if (data instanceof ArrayBuffer) data = new Uint8Array(data);
let output = "";
const prepend = (delim === "0x" || delim === "\\x");
for (let i = 0; i < data.length; i++) {
output += data[i].toString(16).padStart(padding, "0") + delim;
const hex = data[i].toString(16).padStart(padding, "0");
output += prepend ? delim + hex : hex + delim;
if (extraDelim) {
output += extraDelim;
}
// Add LF after each lineSize amount of bytes but not at the end
if ((i !== data.length - 1) && ((i + 1) % lineSize === 0)) {
output += "\n";
}
}
// Add \x or 0x to beginning
if (delim === "0x") output = "0x" + output;
if (delim === "\\x") output = "\\x" + output;
if (delim.length)
return output.slice(0, -delim.length);
else
// Remove the extraDelim at the end (if there is one)
// and remove the delim at the end, but if it's prepended there's nothing to remove
const rTruncLen = extraDelim.length + (prepend ? 0 : delim.length);
if (rTruncLen) {
// If rTruncLen === 0 then output.slice(0,0) will be returned, which is nothing
return output.slice(0, -rTruncLen);
} else {
return output;
}
}
@ -87,7 +101,7 @@ export function toHexFast(data) {
*/
export function fromHex(data, delim="Auto", byteLen=2) {
if (delim !== "None") {
const delimRegex = delim === "Auto" ? /[^a-f\d]/gi : Utils.regexRep(delim);
const delimRegex = delim === "Auto" ? /[^a-f\d]|(0x)/gi : Utils.regexRep(delim);
data = data.replace(delimRegex, "");
}
@ -102,7 +116,7 @@ export function fromHex(data, delim="Auto", byteLen=2) {
/**
* To Hexadecimal delimiters.
*/
export const TO_HEX_DELIM_OPTIONS = ["Space", "Percent", "Comma", "Semi-colon", "Colon", "Line feed", "CRLF", "0x", "\\x", "None"];
export const TO_HEX_DELIM_OPTIONS = ["Space", "Percent", "Comma", "Semi-colon", "Colon", "Line feed", "CRLF", "0x", "0x with comma", "\\x", "None"];
/**

81
src/core/operations/ToHex.mjs
View File

@ -30,6 +30,11 @@ class ToHex extends Operation {
name: "Delimiter",
type: "option",
value: TO_HEX_DELIM_OPTIONS
},
{
name: "Bytes per line",
type: "number",
value: 0
}
];
}
@ -40,8 +45,16 @@ class ToHex extends Operation {
* @returns {string}
*/
run(input, args) {
const delim = Utils.charRep(args[0] || "Space");
return toHex(new Uint8Array(input), delim, 2);
let delim, comma;
if (args[0] === "0x with comma") {
delim = "0x";
comma = ",";
} else {
delim = Utils.charRep(args[0] || "Space");
}
const lineSize = args[1];
return toHex(new Uint8Array(input), delim, 2, comma, lineSize);
}
/**
@ -54,17 +67,31 @@ class ToHex extends Operation {
* @returns {Object[]} pos
*/
highlight(pos, args) {
const delim = Utils.charRep(args[0] || "Space"),
len = delim === "\r\n" ? 1 : delim.length;
pos[0].start = pos[0].start * (2 + len);
pos[0].end = pos[0].end * (2 + len) - len;
// 0x and \x are added to the beginning if they are selected, so increment the positions accordingly
if (delim === "0x" || delim === "\\x") {
pos[0].start += 2;
pos[0].end += 2;
let delim, commaLen;
if (args[0] === "0x with comma") {
delim = "0x";
commaLen = 1;
} else {
delim = Utils.charRep(args[0] || "Space");
}
const lineSize = args[1],
len = (delim === "\r\n" ? 1 : delim.length) + commaLen;
const countLF = function(p) {
// Count the number of LFs from 0 upto p
return (p / lineSize | 0) - (p >= lineSize && p % lineSize === 0);
};
pos[0].start = pos[0].start * (2 + len) + countLF(pos[0].start);
pos[0].end = pos[0].end * (2 + len) + countLF(pos[0].end);
// if the deliminators are not prepended, trim the trailing deliminator
if (!(delim === "0x" || delim === "\\x")) {
pos[0].end -= delim.length;
}
// if there is comma, trim the trailing comma
pos[0].end -= commaLen;
return pos;
}
@ -78,20 +105,26 @@ class ToHex extends Operation {
* @returns {Object[]} pos
*/
highlightReverse(pos, args) {
const delim = Utils.charRep(args[0] || "Space"),
len = delim === "\r\n" ? 1 : delim.length,
width = len + 2;
// 0x and \x are added to the beginning if they are selected, so increment the positions accordingly
if (delim === "0x" || delim === "\\x") {
if (pos[0].start > 1) pos[0].start -= 2;
else pos[0].start = 0;
if (pos[0].end > 1) pos[0].end -= 2;
else pos[0].end = 0;
let delim, commaLen;
if (args[0] === "0x with comma") {
delim = "0x";
commaLen = 1;
} else {
delim = Utils.charRep(args[0] || "Space");
}
pos[0].start = pos[0].start === 0 ? 0 : Math.round(pos[0].start / width);
pos[0].end = pos[0].end === 0 ? 0 : Math.ceil(pos[0].end / width);
const lineSize = args[1],
len = (delim === "\r\n" ? 1 : delim.length) + commaLen,
width = len + 2;
const countLF = function(p) {
// Count the number of LFs from 0 up to p
const lineLength = width * lineSize;
return (p / lineLength | 0) - (p >= lineLength && p % lineLength === 0);
};
pos[0].start = pos[0].start === 0 ? 0 : Math.round((pos[0].start - countLF(pos[0].start)) / width);
pos[0].end = pos[0].end === 0 ? 0 : Math.ceil((pos[0].end - countLF(pos[0].end)) / width);
return pos;
}
}

1
tests/operations/index.mjs
View File

@ -45,6 +45,7 @@ import "./tests/Gzip.mjs";
import "./tests/Gunzip.mjs";
import "./tests/Hash.mjs";
import "./tests/HaversineDistance.mjs";
import "./tests/Hex.mjs";
import "./tests/Hexdump.mjs";
import "./tests/Image.mjs";
import "./tests/IndexOfCoincidence.mjs";

97
tests/operations/tests/Hex.mjs Normal file
View File

@ -0,0 +1,97 @@
import TestRegister from "../../lib/TestRegister.mjs";
TestRegister.addTests([
{
name: "ASCII to Hex stream",
input: "aberystwyth",
expectedOutput: "6162657279737477797468",
recipeConfig: [
{
"op": "To Hex",
"args": [
"None",
0
]
},
]
},
{
name: "ASCII to Hex with colon deliminator ",
input: "aberystwyth",
expectedOutput: "61:62:65:72:79:73:74:77:79:74:68",
recipeConfig: [
{
"op": "To Hex",
"args": [
"Colon",
0
]
}
]
},
{
name: "ASCII to 0x Hex with comma",
input: "aberystwyth",
expectedOutput: "0x61,0x62,0x65,0x72,0x79,0x73,0x74,0x77,0x79,0x74,0x68",
recipeConfig: [
{
"op": "To Hex",
"args": [
"0x with comma",
0
]
}
]
},
{
name: "ASCII to 0x Hex with comma and line breaks",
input: "aberystwyth",
expectedOutput: "0x61,0x62,0x65,0x72,\n0x79,0x73,0x74,0x77,\n0x79,0x74,0x68",
recipeConfig: [
{
"op": "To Hex",
"args": [
"0x with comma",
4
]
}
]
},
{
name: "Hex stream to UTF-8",
input: "e69591e69591e5ada9e5ad90",
expectedOutput: "救救孩子",
recipeConfig: [
{
"op": "From Hex",
"args": [
"Auto"
]
}
]
},
{
name: "Multiline 0x hex to ASCII",
input: "0x49,0x20,0x73,0x61,0x77,0x20,0x6d,0x79,0x73,0x65,0x6c,0x66,0x20,0x73,0x69,\
0x74,0x74,0x69,0x6e,0x67,0x20,0x69,0x6e,0x20,0x74,0x68,0x65,0x20,0x63,0x72,\
0x6f,0x74,0x63,0x68,0x20,0x6f,0x66,0x20,0x74,0x68,0x65,0x20,0x74,0x68,0x69,\
0x73,0x20,0x66,0x69,0x67,0x20,0x74,0x72,0x65,0x65,0x2c,0x20,0x73,0x74,0x61,\
0x72,0x76,0x69,0x6e,0x67,0x20,0x74,0x6f,0x20,0x64,0x65,0x61,0x74,0x68,0x2c,\
0x20,0x6a,0x75,0x73,0x74,0x20,0x62,0x65,0x63,0x61,0x75,0x73,0x65,0x20,0x49,\
0x20,0x63,0x6f,0x75,0x6c,0x64,0x6e,0x27,0x74,0x20,0x6d,0x61,0x6b,0x65,0x20,\
0x75,0x70,0x20,0x6d,0x79,0x20,0x6d,0x69,0x6e,0x64,0x20,0x77,0x68,0x69,0x63,\
0x68,0x20,0x6f,0x66,0x20,0x74,0x68,0x65,0x20,0x66,0x69,0x67,0x73,0x20,0x49,\
0x20,0x77,0x6f,0x75,0x6c,0x64,0x20,0x63,0x68,0x6f,0x6f,0x73,0x65,0x2e",
expectedOutput: "I saw myself sitting in the crotch of the this fig tree, starving to death, just because I couldn't make up my mind which of the figs I would choose.",
recipeConfig: [
{
"op": "From Hex",
"args": [
"Auto"
]
}
]
}
]);