Choose Features

This transformation pass adds artificial paths in the control flow graph, which are never taken. In order to increase the complexity of the transformation a set of artificial basic blocks are inserted as well.

The pass clones some basic blocks and spreads the execution across these cloned basic blocks. Good as intermediate transformation.

Same as basic block cloning, but on function level. Increases the amount of the code and thus - the strength of the transformations applied later.

The pass combines several functions into one, merging the prototypes and substituting dummy values for unused arguments during calls.

With this pass the constants (e.g. string literals) are encrypted in the binary and only decrypted immediately before the use. If Morpher can prove that the called function won't capture the passed pointer, the string will be encrypted back after use.

The conditionals are extra protected with opaque predicates, which are always evaluated to true to false, but this fact cannot be automatically proved.

This transformation turns straight pieces of code into cycles which has only 1 trip count. This introduces some artificial paths into CFG as well.