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Pushing Java type obfuscation to the limit

Journal Contribution - Journal Article

Bytecoded .Net and Java programs reveal type information through encoded type hierarchies, casts, field declarations and method signatures. This facilitates bytecode verification, butit also helps reverse engineers. To obfuscate the type information, we combine three transformations. Class hierarchy flattening removes as much of the type hierarchy from programs as possible. Interface merging and object factory insertion further remove type information from casts, method signatures, and object creation sites. We evaluate these techniques with a prototype tool for Java bytecode. On real-life programs from the DaCapo benchmark suite, we demonstrate that our approach effectively hinders human and tool analysis with limited overhead.
Journal: IEEE Transactions on Dependable and Secure Computing
ISSN: 1545-5971
Issue: 6
Volume: 11
Pages: 553 - 567
Publication year:2014
Keywords:Computer science/information technology