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Update Mgg Detect Algorithm

20230320
MengYX 5 years ago
parent
c3756bb3b3
commit
e7b86a4779
No known key found for this signature in database GPG Key ID: E63F9C7303E8F604
1 changed files with 139 additions and 68 deletions
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  1. 207
      src/decrypt/qmcMask.js

207
src/decrypt/qmcMask.js
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@ -1,50 +1,58 @@
import {FLAC_HEADER, IsBytesEqual, OGG_HEADER} from "./util"
const QMOggConstHeader = [
0x4F, 0x67, 0x67, 0x53, 0x00, 0x02, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x01, 0x1E, 0x01, 0x76, 0x6F, 0x72,
0x62, 0x69, 0x73, 0x00, 0x00, 0x00, 0x00, 0x02, 0x44, 0xAC, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
0x00, 0xEE, 0x02, 0x00, 0x00, 0x00, 0x00, 0x00, 0xB8, 0x01, 0x4F, 0x67, 0x67, 0x53, 0x00, 0x00,
0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x01, 0x00, 0x00, 0x00,
0x00, 0x00, 0x00, 0x00, 0x10, 0x00, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF,
0xFF, 0xFF, 0xFF, 0xFF, 0x00, 0x03, 0x76, 0x6F, 0x72, 0x62, 0x69, 0x73, 0x2C, 0x00, 0x00, 0x00,
0x58, 0x69, 0x70, 0x68, 0x2E, 0x4F, 0x72, 0x67, 0x20, 0x6C, 0x69, 0x62, 0x56, 0x6F, 0x72, 0x62,
0x69, 0x73, 0x20, 0x49, 0x20, 0x32, 0x30, 0x31, 0x35, 0x30, 0x31, 0x30, 0x35, 0x20, 0x28, 0xE2,
0x9B, 0x84, 0xE2, 0x9B, 0x84, 0xE2, 0x9B, 0x84, 0xE2, 0x9B, 0x84, 0x29, 0x00, 0x00, 0x00, 0x00,
0x00, 0x00, 0x00, 0x00, 0x54, 0x49, 0x54, 0x4C, 0x45, 0x3D];
const QMOggConstHeaderConfidence = [
const QMOggPublicHeader1 = [
0x4f, 0x67, 0x67, 0x53, 0x00, 0x02, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0xff, 0xff,
0xff, 0xff, 0x00, 0x00, 0x00, 0x00, 0xff, 0xff, 0xff, 0xff, 0x01, 0x1e, 0x01, 0x76, 0x6f, 0x72,
0x62, 0x69, 0x73, 0x00, 0x00, 0x00, 0x00, 0x02, 0x44, 0xac, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
0x00, 0xee, 0x02, 0x00, 0x00, 0x00, 0x00, 0x00, 0xb8, 0x01, 0x4f, 0x67, 0x67, 0x53, 0x00, 0x00,
0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0xff, 0xff, 0xff, 0xff, 0x01, 0x00, 0x00, 0x00,
0xff, 0xff, 0xff, 0xff];
const QMOggPublicHeader2 = [
0x03, 0x76, 0x6f, 0x72, 0x62, 0x69, 0x73, 0x2c, 0x00, 0x00, 0x00, 0x58, 0x69, 0x70, 0x68, 0x2e,
0x4f, 0x72, 0x67, 0x20, 0x6c, 0x69, 0x62, 0x56, 0x6f, 0x72, 0x62, 0x69, 0x73, 0x20, 0x49, 0x20,
0x32, 0x30, 0x31, 0x35, 0x30, 0x31, 0x30, 0x35, 0x20, 0x28, 0xe2, 0x9b, 0x84, 0xe2, 0x9b, 0x84,
0xe2, 0x9b, 0x84, 0xe2, 0x9b, 0x84, 0x29, 0xff, 0x00, 0x00, 0x00, 0xff, 0x00, 0x00, 0x00, 0x54,
0x49, 0x54, 0x4c, 0x45, 0x3d];
const QMOggPublicConf1 = [
9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 0, 0,
0, 0, 9, 9, 9, 9, 0, 0, 0, 0, 9, 9, 9, 9, 9, 9,
9, 9, 9, 9, 9, 9, 9, 6, 3, 3, 3, 3, 6, 6, 6, 6,
3, 3, 3, 3, 6, 6, 6, 6, 6, 9, 9, 9, 9, 9, 9, 9,
9, 9, 9, 9, 9, 9, 9, 9, 0, 0, 0, 0, 9, 9, 9, 9,
0, 0, 0, 0, 6, 0, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3,
3, 3, 3, 3, 0, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9,
9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9,
9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9,
9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 0, 1, 9, 9,
0, 1, 9, 9, 9, 9, 9, 9, 9, 9];
0, 0, 0, 0];
const QMOggPublicConf2 = [
3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3,
3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3,
3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3,
3, 3, 3, 3, 3, 3, 3, 0, 1, 3, 3, 0, 1, 3, 3, 3,
3, 3, 3, 3, 3];
const QMCDefaultMaskMatrix = [
0x4A, 0xD6, 0xCA, 0x90, 0x67, 0xF7, 0x52, 0x5E,
0x95, 0x23, 0x9F, 0x13, 0x11, 0x7E, 0x47, 0x74,
0x3D, 0x90, 0xAA, 0x3F, 0x51, 0xC6, 0x09, 0xD5,
0x9F, 0xFA, 0x66, 0xF9, 0xF3, 0xD6, 0xA1, 0x90,
0xA0, 0xF7, 0xF0, 0x1D, 0x95, 0xDE, 0x9F, 0x84,
0x11, 0xF4, 0x0E, 0x74, 0xBB, 0x90, 0xBC, 0x3F,
0x92, 0x00, 0x09, 0x5B, 0x9F, 0x62, 0x66, 0xA1];
const QMCDefaultMaskSuperA = 0xC3;
const QMCDefaultMaskSuperB = 0xD8;
0xde, 0x51, 0xfa, 0xc3, 0x4a, 0xd6, 0xca, 0x90,
0x7e, 0x67, 0x5e, 0xf7, 0xd5, 0x52, 0x84, 0xd8,
0x47, 0x95, 0xbb, 0xa1, 0xaa, 0xc6, 0x66, 0x23,
0x92, 0x62, 0xf3, 0x74, 0xa1, 0x9f, 0xf4, 0xa0,
0x1d, 0x3f, 0x5b, 0xf0, 0x13, 0x0e, 0x09, 0x3d,
0xf9, 0xbc, 0x00, 0x11];
class QmcMask {
constructor(matrix, superA, superB) {
if (superA === undefined || superB === undefined) {
this.Matrix128 = matrix;
if (matrix.length === 44) {
this.Matrix44 = matrix
this.generateMask128from44()
debugger
} else {
this.Matrix128 = matrix
this.generateMask44from128()
}
this.generateMask58from128()
} else {
this.Matrix58 = matrix;
this.Super58A = superA;
this.Super58B = superB;
this.generateMask128from58();
this.generateMask44from128()
}
}
@ -88,6 +96,35 @@ class QmcMask {
this.Super58B = superB;
}
generateMask44from128() {
if (this.Matrix128.length !== 128) throw "incorrect mask128 matrix length";
let mapping = GetConvertMapping()
this.Matrix44 = []
let idxI44 = 0
mapping.forEach(it256 => {
let it256Len = it256.length
for (let i = 1; i < it256Len; i++) {
if (this.Matrix128[it256[0]] !== q.Matrix128[it256[i]]) {
throw "decode mask-128 to mask-44 failed"
}
}
this.Matrix44[idxI44] = this.Matrix128[it256[0]]
idxI44++
})
}
generateMask128from44() {
if (this.Matrix44.length !== 44) throw "incorrect mask length"
this.Matrix128 = []
let idx44 = 0
GetConvertMapping().forEach(it256 => {
it256.forEach(m => {
this.Matrix128[m] = this.Matrix44[idx44]
})
idx44++
})
}
Decrypt(data) {
let dst = data.slice(0);
let index = -1;
@ -123,31 +160,39 @@ export function QmcMaskDetectMflac(data) {
}
export function QmcMaskDetectMgg(data) {
if (data.length < QMOggConstHeader.length) return;
if (data.length < 0x100) return
let matrixConfidence = {};
for (let i = 0; i < 58; i++) matrixConfidence[i] = {};
for (let idx128 = 0; idx128 < QMOggConstHeader.length; idx128++) {
if (QMOggConstHeaderConfidence[idx128] === 0) continue;
let idx58 = GetMask58Index(idx128);
let mask = data[idx128] ^ QMOggConstHeader[idx128];
let confidence = QMOggConstHeaderConfidence[idx128];
if (mask in matrixConfidence[idx58]) {
matrixConfidence[idx58][mask] += confidence
for (let i = 0; i < 44; i++) matrixConfidence[i] = {};
const page2 = data[0x54] ^ data[0xC] ^ QMOggPublicHeader1[0xC];
const spHeader = QmcGenerateOggHeader(page2)
const spConf = QmcGenerateOggConf(page2)
for (let idx128 = 0; idx128 < spHeader.length; idx128++) {
if (spConf[idx128] === 0) continue;
let idx44 = GetMask44Index(idx128);
let _m = data[idx128] ^ spHeader[idx128]
let confidence = spConf[idx128];
if (_m in matrixConfidence[idx44]) {
matrixConfidence[idx44][_m] += confidence
} else {
matrixConfidence[idx58][mask] = confidence
matrixConfidence[idx44][_m] = confidence
}
}
let matrix = [], superA, superB;
let matrix = [];
try {
for (let i = 0; i < 56; i++) matrix[i] = getMaskConfidenceResult(matrixConfidence[i]);
superA = getMaskConfidenceResult(matrixConfidence[56]);
superB = getMaskConfidenceResult(matrixConfidence[57]);
for (let i = 0; i < 44; i++)
matrix[i] = getMaskConfidenceResult(matrixConfidence[i]);
} catch (e) {
return;
}
const mask = new QmcMask(matrix, superA, superB);
if (!IsBytesEqual(OGG_HEADER, mask.Decrypt(data.slice(0, OGG_HEADER.length)))) return;
const mask = new QmcMask(matrix);
let dx = mask.Decrypt(data.slice(0, OGG_HEADER.length));
if (!IsBytesEqual(OGG_HEADER, dx)) {
debugger
return;
}
return mask;
}
@ -159,12 +204,17 @@ export function QmcMaskCreate58(matrix, superA, superB) {
return new QmcMask(matrix, superA, superB)
}
export function QmcMaskCreate44(mask44) {
return new QmcMask(mask44)
}
/**
* @param confidence {{}}
* @returns {number}
*/
function getMaskConfidenceResult(confidence) {
if (confidence.length === 0) throw "can not match at least one key";
if (confidence.length > 1) console.warn("There are 2 potential value for the mask!")
let result, conf = 0;
for (let idx in confidence) {
if (confidence[idx] > conf) {
@ -178,27 +228,48 @@ function getMaskConfidenceResult(confidence) {
/**
* @return {number}
*/
function GetMask58Index(idx128) {
if (idx128 > 127) idx128 = idx128 % 128;
let col = idx128 % 16;
let row = (idx128 - col) / 16;
switch (col) {
case 0://Super 1
row = 8;
col = 0;
break;
case 8://Super 2
row = 8;
col = 1;
break;
default:
if (col > 7) {
row = 7 - row;
col = 15 - col;
} else {
col -= 1;
}
break;
const allMapping = [];
const mask128to44 = [];
(function () {
for (let i = 0; i < 128; i++) {
let realIdx = (i * i + 27) % 256
if (realIdx in allMapping) {
allMapping[realIdx].push(i)
} else {
allMapping[realIdx] = [i]
}
}
return row * 7 + col
let idx44 = 0
allMapping.forEach(all128 => {
all128.forEach(_i128 => {
mask128to44[_i128] = idx44
})
idx44++
})
})();
function GetConvertMapping() {
return allMapping;
}
function GetMask44Index(idx128) {
return mask128to44[idx128 % 128]
}
function QmcGenerateOggHeader(page2) {
let spec = [page2, 0xFF]
for (let i = 2; i < page2; i++) spec.push(0xFF)
spec.push(0xFF)
return QMOggPublicHeader1.concat(spec, QMOggPublicHeader2)
}
function QmcGenerateOggConf(page2) {
let specConf = [6, 0]
for (let i = 2; i < page2; i++) specConf.push(4)
specConf.push(0)
return QMOggPublicConf1.concat(specConf, QMOggPublicConf2)
}
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