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fix(Player): Use global var to find signature algorithm (#953)

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* chore: Update jintr to version 3.3.1

* fix(Player): Use global var to find signature algorithm

This change allows matching code such as:
```
// "Y" is the global var.

r = r[Y[14]](Y[19]);
q3[Y[8]](r, 30);
q3[Y[8]](r, 65);
q3[Y[8]](r, 2);
```

TODO:
Maybe consider removing the regex (it's too fragile) and instead use the AST walker, like we already do for `nsig` and the global lookup variable.
This commit is contained in:
Luan
2025-04-23 09:28:42 -03:00
committed by GitHub
parent 5e665e8f0b
commit 7f1eeb6b5b
3 changed files with 17 additions and 6 deletions
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8
package-lock.json generated
View File

@@ -13,7 +13,7 @@
"license": "MIT",
"dependencies": {
"@bufbuild/protobuf": "^2.0.0",
"jintr": "^3.3.0",
"jintr": "^3.3.1",
"tslib": "^2.5.0",
"undici": "^5.19.1"
},
@@ -6155,9 +6155,9 @@
}
},
"node_modules/jintr": {
"version": "3.3.0",
"resolved": "https://registry.npmjs.org/jintr/-/jintr-3.3.0.tgz",
"integrity": "sha512-ZsaajJ4Hr5XR0tSPhOZOTjFhxA0qscKNSOs41NRjx7ZOGwpfdp8NKIBEUtvUPbA37JXyv1sJlgeOOZHjr3h76Q==",
"version": "3.3.1",
"resolved": "https://registry.npmjs.org/jintr/-/jintr-3.3.1.tgz",
"integrity": "sha512-nnOzyhf0SLpbWuZ270Omwbj5LcXUkTcZkVnK8/veJXtSZOiATM5gMZMdmzN75FmTyj+NVgrGaPdH12zIJ24oIA==",
"funding": [
"https://github.com/sponsors/LuanRT"
],

2
package.json
View File

@@ -103,7 +103,7 @@
"license": "MIT",
"dependencies": {
"@bufbuild/protobuf": "^2.0.0",
"jintr": "^3.3.0",
"jintr": "^3.3.1",
"tslib": "^2.5.0",
"undici": "^5.19.1"
},

13
src/core/Player.ts
View File

@@ -258,7 +258,18 @@ export default class Player {
}
static extractSigSourceCode(data: string, global_variable?: ASTLookupResult): string | undefined {
const match = data.match(/function\(([A-Za-z_0-9]+)\)\{([A-Za-z_0-9]+=[A-Za-z_0-9]+\.split\((?:[^)]+)\)(.+?)\.join\((?:[^)]+)\))\}/);
// Classic static split/join.
const split_join_regex = /function\(([A-Za-z_0-9]+)\)\{([A-Za-z_0-9]+=[A-Za-z_0-9]+\.split\((?:[^)]+)\)(.+?)\.join\((?:[^)]+)\))\}/;
// Using the global lookup variable.
const lookup_var = global_variable?.name?.replace(/[$^\\.*+?()[\]{}|]/g, '\\$&');
const lookup_regex = lookup_var
? new RegExp(
`function\\(([A-Za-z_0-9]+)\\)\\{([A-Za-z_0-9]+=[A-Za-z_0-9]+\\[${lookup_var}\\[\\d+\\]\\]\\([^)]*\\)([\\s\\S]+?)\\[${lookup_var}\\[\\d+\\]\\]\\([^)]*\\))\\}`
)
: null;
const match = data.match(split_join_regex) || (lookup_regex ? data.match(lookup_regex) : null);
if (!match) {
Log.warn(TAG, 'Failed to extract signature decipher algorithm.');