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7.0 1.0 1.0 6.43 MB

An experimental obfuscator for software protection using the SMT-based code generation

License: Apache License 2.0

Python 100.00%
obfuscator software-protection smt-solver code-generation

hibari-gas's Issues

難読化の前後でゼロフラグの値が保証されない

addl $3, %eax
jz hoge

addlが難読化されて

addl $3, %eax
subl $3, R0+1*8(%rip)

jz hoge

などとなってしまうケースが発生していた.
(上の例では%eaxの値に基づいていたはずのゼロフラグが,R0+1*8の値で更新されてしまう)

GASとSMTの処理を分離する

libs/GAS/libs/SMT/の処理を完全に独立させる.

  • libs/GAS/で入出力例を生成し,libs/SMT/に渡して命令列を生成
  • libs/SMT/で命令列を生成し,libs/GAS/に渡して実行可能コードを生成

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