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Merge branch 'rot_bruteforce' of https://github.com/mikecat/CyberChef

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n1474335 2022-07-08 15:55:27 +01:00
commit 418a7962a5
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2
src/core/config/Categories.json
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@ -88,7 +88,9 @@
"SM4 Encrypt",
"SM4 Decrypt",
"ROT13",
"ROT13 Brute Force",
"ROT47",
"ROT47 Brute Force",
"XOR",
"XOR Brute Force",
"Vigenère Encode",

102
src/core/operations/ROT13BruteForce.mjs Normal file
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@ -0,0 +1,102 @@
/**
* @author MikeCAT
* @license Apache-2.0
*/
import Operation from "../Operation.mjs";
import Utils from "../Utils.mjs";
/**
* ROT13 Brute Force operation.
*/
class ROT13BruteForce extends Operation {
/**
* ROT13BruteForce constructor
*/
constructor() {
super();
this.name = "ROT13 Brute Force";
this.module = "Default";
this.description = "Try all meaningful amounts for ROT13.<br><br>Optionally you can enter your known plaintext (crib) to filter the result.";
this.infoURL = "https://wikipedia.org/wiki/ROT13";
this.inputType = "byteArray";
this.outputType = "string";
this.args = [
{
name: "Rotate lower case chars",
type: "boolean",
value: true
},
{
name: "Rotate upper case chars",
type: "boolean",
value: true
},
{
name: "Rotate numbers",
type: "boolean",
value: false
},
{
"name": "Sample length",
"type": "number",
"value": 100
},
{
"name": "Sample offset",
"type": "number",
"value": 0
},
{
"name": "Print amount",
"type": "boolean",
"value": true
},
{
"name": "Crib (known plaintext string)",
"type": "string",
"value": ""
}
];
}
/**
* @param {byteArray} input
* @param {Object[]} args
* @returns {string}
*/
run(input, args) {
const [rotateLower, rotateUpper, rotateNum, sampleLength, sampleOffset, printAmount, crib] = args;
const sample = input.slice(sampleOffset, sampleOffset + sampleLength);
const cribLower = crib.toLowerCase();
const lowerStart = "a".charCodeAt(0), upperStart = "A".charCodeAt(0), numStart = "0".charCodeAt(0);
const result = [];
for (let amount = 1; amount < 26; amount++) {
const rotated = sample.slice();
for (let i = 0; i < rotated.length; i++) {
if (rotateLower && lowerStart <= rotated[i] && rotated[i] < lowerStart + 26) {
rotated[i] = (rotated[i] - lowerStart + amount) % 26 + lowerStart;
} else if (rotateUpper && upperStart <= rotated[i] && rotated[i] < upperStart + 26) {
rotated[i] = (rotated[i] - upperStart + amount) % 26 + upperStart;
} else if (rotateNum && numStart <= rotated[i] && rotated[i] < numStart + 10) {
rotated[i] = (rotated[i] - numStart + amount) % 10 + numStart;
}
}
const rotatedString = Utils.byteArrayToUtf8(rotated);
if (rotatedString.toLowerCase().indexOf(cribLower) >= 0) {
const rotatedStringPrintable = Utils.printable(rotatedString, false);
if (printAmount) {
const amountStr = "Amount = " + (" " + amount).slice(-2) + ": ";
result.push(amountStr + rotatedStringPrintable);
} else {
result.push(rotatedStringPrintable);
}
}
}
return result.join("\n");
}
}
export default ROT13BruteForce;

82
src/core/operations/ROT47BruteForce.mjs Normal file
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/**
* @author MikeCAT
* @license Apache-2.0
*/
import Operation from "../Operation.mjs";
import Utils from "../Utils.mjs";
/**
* ROT47 Brute Force operation.
*/
class ROT47BruteForce extends Operation {
/**
* ROT47BruteForce constructor
*/
constructor() {
super();
this.name = "ROT47 Brute Force";
this.module = "Default";
this.description = "Try all meaningful amounts for ROT47.<br><br>Optionally you can enter your known plaintext (crib) to filter the result.";
this.infoURL = "https://wikipedia.org/wiki/ROT13#Variants";
this.inputType = "byteArray";
this.outputType = "string";
this.args = [
{
"name": "Sample length",
"type": "number",
"value": 100
},
{
"name": "Sample offset",
"type": "number",
"value": 0
},
{
"name": "Print amount",
"type": "boolean",
"value": true
},
{
"name": "Crib (known plaintext string)",
"type": "string",
"value": ""
}
];
}
/**
* @param {byteArray} input
* @param {Object[]} args
* @returns {string}
*/
run(input, args) {
const [sampleLength, sampleOffset, printAmount, crib] = args;
const sample = input.slice(sampleOffset, sampleOffset + sampleLength);
const cribLower = crib.toLowerCase();
const result = [];
for (let amount = 1; amount < 94; amount++) {
const rotated = sample.slice();
for (let i = 0; i < rotated.length; i++) {
if (33 <= rotated[i] && rotated[i] <= 126) {
rotated[i] = (rotated[i] - 33 + amount) % 94 + 33;
}
}
const rotatedString = Utils.byteArrayToUtf8(rotated);
if (rotatedString.toLowerCase().indexOf(cribLower) >= 0) {
const rotatedStringPrintable = Utils.printable(rotatedString, false);
if (printAmount) {
const amountStr = "Amount = " + (" " + amount).slice(-2) + ": ";
result.push(amountStr + rotatedStringPrintable);
} else {
result.push(rotatedStringPrintable);
}
}
}
return result.join("\n");
}
}
export default ROT47BruteForce;