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fix: nsig fn extraction

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This commit is contained in:
ThetaDev 2024-07-31 21:46:32 +02:00
parent 9bde75ec6d
commit edab09184a
1 changed files with 4 additions and 3 deletions
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7
src/deobfuscate.rs
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@ -164,6 +164,7 @@ fn get_sig_fn(player_js: &str) -> Result<String, DeobfError> {
+ &deobfuscate_function + &deobfuscate_function
+ &caller_function(DEOBF_SIG_FUNC_NAME, &dfunc_name); + &caller_function(DEOBF_SIG_FUNC_NAME, &dfunc_name);
verify_fn(&js_fn, DEOBF_SIG_FUNC_NAME)?; verify_fn(&js_fn, DEOBF_SIG_FUNC_NAME)?;
tracing::debug!("successfully extracted sig fn `{dfunc_name}`");
Ok(js_fn) Ok(js_fn)
} }
@ -171,7 +172,7 @@ fn get_sig_fn(player_js: &str) -> Result<String, DeobfError> {
fn get_nsig_fn_names(player_js: &str) -> impl Iterator<Item = String> + '_ { fn get_nsig_fn_names(player_js: &str) -> impl Iterator<Item = String> + '_ {
static FUNCTION_NAME_REGEX: Lazy<Regex> = Lazy::new(|| { static FUNCTION_NAME_REGEX: Lazy<Regex> = Lazy::new(|| {
// x.get( .. y=functionName[array_num](z) .. x.set( // x.get( .. y=functionName[array_num](z) .. x.set(
Regex::new(r#"\w\.get\(.+\w=(\w{2,})\[(\d+)\]\(\w\).+\w\.set\("#).unwrap() Regex::new(r#"(?:\w\.get\(|index\.m3u8).+\w=(\w{2,})\[(\d+)\]\(\w\).+\w\.set\("#).unwrap()
}); });
FUNCTION_NAME_REGEX FUNCTION_NAME_REGEX
@ -265,7 +266,7 @@ fn get_nsig_fn(player_js: &str) -> Result<String, DeobfError> {
let js_fn = extract_js_fn(&player_js[offset..], name) let js_fn = extract_js_fn(&player_js[offset..], name)
.map(|s| s + ";" + &caller_function(DEOBF_NSIG_FUNC_NAME, name))?; .map(|s| s + ";" + &caller_function(DEOBF_NSIG_FUNC_NAME, name))?;
verify_fn(&js_fn, DEOBF_NSIG_FUNC_NAME)?; verify_fn(&js_fn, DEOBF_NSIG_FUNC_NAME)?;
tracing::info!("Successfully extracted nsig fn `{name}`"); tracing::debug!("successfully extracted nsig fn `{name}`");
Ok(js_fn) Ok(js_fn)
}; };
@ -436,6 +437,6 @@ c[36](c[8],c[32]),c[20](c[25],c[10]),c[2](c[22],c[8]),c[32](c[20],c[16]),c[32](c
let deobf_sig = deobf.deobfuscate_sig("GOqGOqGOq0QJ8wRAIgaryQHfplJ9xJSKFywyaSMHuuwZYsoMTAvRvfm51qIGECIA5061zWeyfMPX9hEl_U6f9J0tr7GTJMKyPf5XNrJb5fb5i").unwrap(); let deobf_sig = deobf.deobfuscate_sig("GOqGOqGOq0QJ8wRAIgaryQHfplJ9xJSKFywyaSMHuuwZYsoMTAvRvfm51qIGECIA5061zWeyfMPX9hEl_U6f9J0tr7GTJMKyPf5XNrJb5fb5i").unwrap();
assert!(deobf_sig.len() >= 100); assert!(deobf_sig.len() >= 100);
let deobf_nsig = deobf.deobfuscate_nsig("WHbZ-Nj2TSJxder").unwrap(); let deobf_nsig = deobf.deobfuscate_nsig("WHbZ-Nj2TSJxder").unwrap();
assert!(deobf_nsig.len() >= 10); assert!(deobf_nsig.len() >= 6);
} }
} }