fix: issue in the contains_method function in the dex module.

This function assumed that the `methods` vector is sorted by name and uses a binary search, but that's not the case.

Author: plusvic

lib/src/modules/dex/mod.rs

@@ -25,6 +25,7 @@ thread_local!(
 fn main(data: &[u8], _meta: Option<&[u8]>) -> Result<Dex, ModuleError> {
     CHECKSUM_CACHE.with(|cache| *cache.borrow_mut() = None);
     SIGNATURE_CACHE.with(|cache| *cache.borrow_mut() = None);
+
     match parser::Dex::parse(data) {
         Ok(dex) => Ok(dex.into()),
         Err(_) => {
@@ -137,7 +138,7 @@ fn contains_method(
         Err(_) => return None,
     };
 
-    Some(dex.methods.binary_search_by(|item| item.name.cmp(&str)).is_ok())
+    Some(dex.methods.iter().any(|item| item.name.as_deref() == str.as_deref()))
 }
 
 /// Function that checks whether the DEX file contains the specified class

lib/src/modules/dex/tests/mod.rs

@@ -91,7 +91,8 @@ fn methods() {
         import "dex"
         rule test {
             condition:
-                dex.contains_method("getPackageName")
+                dex.contains_method("getPackageName") and
+                dex.contains_method("loadLibrary")
         }
         "#,
         &dex