Ejemplo n.º 1
0
void SetlIRBuilder::mem(AnalysisProcessor &ap, Inst &inst) const {
  SymbolicElement   *se;
  std::stringstream expr, mem1e, sf, of;
  uint64_t          mem     = this->operands[0].getValue();
  uint64_t          memSize = this->operands[0].getSize();

  /* Create the flag SMT semantic */
  sf << ap.buildSymbolicFlagOperand(ID_SF);
  of << ap.buildSymbolicFlagOperand(ID_OF);
  mem1e << ap.buildSymbolicMemOperand(mem, memSize);

  /* Finale expr */
  expr << smt2lib::ite(
            smt2lib::equal(
              smt2lib::bvxor(sf.str(), of.str()),
              smt2lib::bvtrue()),
            smt2lib::bv(1, BYTE_SIZE_BIT),
            smt2lib::bv(0, BYTE_SIZE_BIT));

  /* Create the symbolic element */
  se = ap.createMemSE(inst, expr, mem, memSize);

  /* Apply the taint via the concretization */
  if (ap.getFlagValue(ID_SF) ^ ap.getFlagValue(ID_OF)) {
    if (ap.isRegTainted(ID_SF) == TAINTED)
      ap.assignmentSpreadTaintMemReg(se, mem, ID_SF, memSize);
    else
      ap.assignmentSpreadTaintMemReg(se, mem, ID_OF, memSize);
  }

}
Ejemplo n.º 2
0
void SetleIRBuilder::mem(AnalysisProcessor &ap, Inst &inst) const {
  SymbolicExpression *se;
  smt2lib::smtAstAbstractNode *expr, *sf, *of, *zf;
  uint64 mem     = this->operands[0].getValue();
  uint64 memSize = this->operands[0].getSize();

  /* Create the flag SMT semantic */
  sf = ap.buildSymbolicFlagOperand(ID_SF);
  of = ap.buildSymbolicFlagOperand(ID_OF);
  zf = ap.buildSymbolicFlagOperand(ID_ZF);

  /* Finale expr */
  expr = smt2lib::ite(
            smt2lib::equal(
              smt2lib::bvor(smt2lib::bvxor(sf, of), zf),
              smt2lib::bvtrue()),
            smt2lib::bv(1, BYTE_SIZE_BIT),
            smt2lib::bv(0, BYTE_SIZE_BIT));

  /* Create the symbolic expression */
  se = ap.createMemSE(inst, expr, mem, memSize);

  /* Apply the taint via the concretization */
  if (((ap.getFlagValue(ID_SF) ^ ap.getFlagValue(ID_OF)) | ap.getFlagValue(ID_ZF)) == 1) {
    if (ap.isRegTainted(ID_SF) == TAINTED)
      ap.assignmentSpreadTaintMemReg(se, mem, ID_SF, memSize);
    else if (ap.isRegTainted(ID_OF) == TAINTED)
      ap.assignmentSpreadTaintMemReg(se, mem, ID_OF, memSize);
    else
      ap.assignmentSpreadTaintMemReg(se, mem, ID_ZF, memSize);
  }

}
Ejemplo n.º 3
0
void SetnbeIRBuilder::mem(AnalysisProcessor &ap, Inst &inst) const {
  SymbolicExpression *se;
  smt2lib::smtAstAbstractNode *expr, *cf, *zf;
  auto mem = this->operands[0].getMem();
  auto memSize = this->operands[0].getMem().getSize();

  /* Create the SMT semantic */
  cf = ap.buildSymbolicFlagOperand(ID_TMP_CF);
  zf = ap.buildSymbolicFlagOperand(ID_TMP_ZF);

  /* Finale expr */
  expr = smt2lib::ite(
            smt2lib::equal(
              smt2lib::bvand(
                smt2lib::bvnot(cf),
                smt2lib::bvnot(zf)
              ),
              smt2lib::bvtrue()),
            smt2lib::bv(1, BYTE_SIZE_BIT),
            smt2lib::bv(0, BYTE_SIZE_BIT));

  /* Create the symbolic expression */
  se = ap.createMemSE(inst, expr, mem, memSize);

  /* Apply the taint via the concretization */
  if (ap.getFlagValue(ID_TMP_CF) == 0 && ap.getFlagValue(ID_TMP_ZF) == 0) {
    if (ap.isRegTainted(ID_TMP_CF) == TAINTED)
      ap.assignmentSpreadTaintMemReg(se, mem, ID_TMP_CF, memSize);
    else
      ap.assignmentSpreadTaintMemReg(se, mem, ID_TMP_ZF, memSize);
  }

}
Ejemplo n.º 4
0
void SetzIRBuilder::mem(AnalysisProcessor &ap, Inst &inst) const {
  SymbolicElement   *se;
  std::stringstream expr, mem1e, zf;
  uint64_t          mem     = this->operands[0].getValue();
  uint64_t          memSize = this->operands[0].getSize();

  /* Create the SMT semantic */
  zf << ap.buildSymbolicFlagOperand(ID_ZF);
  mem1e << ap.buildSymbolicMemOperand(mem, memSize);

  /* Finale expr */
  expr << smt2lib::ite(
            smt2lib::equal(
              zf.str(),
              smt2lib::bvtrue()),
            smt2lib::bv(1, 8),
            smt2lib::bv(0, 8));

  /* Create the symbolic element */
  se = ap.createMemSE(inst, expr, mem, memSize);

  /* Apply the taint via the concretization */
  if (ap.getFlagValue(ID_ZF) == 1)
    ap.assignmentSpreadTaintMemReg(se, mem, ID_ZF, memSize);

}
Ejemplo n.º 5
0
void SetsIRBuilder::mem(AnalysisProcessor &ap, Inst &inst) const {
  SymbolicExpression *se;
  smt2lib::smtAstAbstractNode *expr, *sf;
  auto mem = this->operands[0].getMem().getAddress();
  auto memSize = this->operands[0].getMem().getSize();

  /* Create the SMT semantic */
  sf = ap.buildSymbolicFlagOperand(ID_SF);

  /* Finale expr */
  expr = smt2lib::ite(
            smt2lib::equal(
              sf,
              smt2lib::bvtrue()),
            smt2lib::bv(1, BYTE_SIZE_BIT),
            smt2lib::bv(0, BYTE_SIZE_BIT));

  /* Create the symbolic expression */
  se = ap.createMemSE(inst, expr, mem, memSize);

  /* Apply the taint via the concretization */
  if (ap.getFlagValue(ID_SF) == 1)
    ap.assignmentSpreadTaintMemReg(se, mem, ID_SF, memSize);

}
Ejemplo n.º 6
0
void MovdqaIRBuilder::memReg(AnalysisProcessor &ap, Inst &inst) const {
  SymbolicExpression *se;
  smt2lib::smtAstAbstractNode *expr;
  auto memSize = this->operands[0].getMem().getSize();
  auto mem = this->operands[0].getMem();
  auto reg = this->operands[1].getReg();
  auto regSize = this->operands[1].getReg().getSize();

  /* Create the SMT semantic */
  expr = ap.buildSymbolicRegOperand(reg, regSize);

  /* Create the symbolic expression */
  se = ap.createMemSE(inst, expr, mem, memSize);

  /* Apply the taint */
  ap.assignmentSpreadTaintMemReg(se, mem, reg, memSize);
}
Ejemplo n.º 7
0
void MovIRBuilder::memReg(AnalysisProcessor &ap, Inst &inst) const {
  SymbolicElement   *se;
  std::stringstream expr;
  uint32_t          writeSize = this->operands[0].getSize();
  uint64_t          mem       = this->operands[0].getValue();
  uint64_t          reg       = this->operands[1].getValue();
  uint64_t          regSize   = this->operands[1].getSize();

  /* Create the SMT semantic */
  expr << ap.buildSymbolicRegOperand(reg, regSize);

  /* Create the symbolic element */
  se = ap.createMemSE(inst, expr, mem, writeSize);

  /* Apply the taint */
  ap.assignmentSpreadTaintMemReg(se, mem, reg, writeSize);
}
Ejemplo n.º 8
0
void MovhpdIRBuilder::memReg(AnalysisProcessor &ap, Inst &inst) const {
  SymbolicExpression *se;
  smt2lib::smtAstAbstractNode *expr, *op2;
  uint32 writeSize = this->operands[0].getSize();
  uint64 mem       = this->operands[0].getValue();
  uint64 reg       = this->operands[1].getValue();
  uint64 regSize   = this->operands[1].getSize();

  /* Create the SMT semantic */
  op2 = ap.buildSymbolicRegOperand(reg, regSize);

  expr = smt2lib::extract(127, 64, op2);

  /* Create the symbolic expression */
  se = ap.createMemSE(inst, expr, mem, writeSize);

  /* Apply the taint */
  ap.assignmentSpreadTaintMemReg(se, mem, reg, writeSize);
}
Ejemplo n.º 9
0
void MovlpdIRBuilder::memReg(AnalysisProcessor &ap, Inst &inst) const {
  SymbolicExpression *se;
  smt2lib::smtAstAbstractNode *expr, *op2;
  auto memSize = this->operands[0].getMem().getSize();
  auto mem = this->operands[0].getMem().getAddress();
  auto reg = this->operands[1].getReg().getTritonRegId();
  auto regSize = this->operands[1].getReg().getSize();

  /* Create the SMT semantic */
  op2 = ap.buildSymbolicRegOperand(reg, regSize);

  /* Destination = Source[0..63] */
  expr = smt2lib::extract(63, 0, op2);

  /* Create the symbolic expression */
  se = ap.createMemSE(inst, expr, mem, memSize);

  /* Apply the taint */
  ap.assignmentSpreadTaintMemReg(se, mem, reg, memSize);
}
Ejemplo n.º 10
0
void MovhpdIRBuilder::memReg(AnalysisProcessor &ap, Inst &inst) const {
  SymbolicElement   *se;
  std::stringstream expr, op1, op2;
  uint32            writeSize = this->operands[0].getSize();
  uint64            mem       = this->operands[0].getValue();
  uint64            reg       = this->operands[1].getValue();
  uint64            regSize   = this->operands[1].getSize();

  /* Create the SMT semantic */
  op1 << ap.buildSymbolicMemOperand(mem, writeSize);
  op2 << ap.buildSymbolicRegOperand(reg, regSize);

  expr << smt2lib::extract(127, 64, op2.str());

  /* Create the symbolic element */
  se = ap.createMemSE(inst, expr, mem, writeSize);

  /* Apply the taint */
  ap.assignmentSpreadTaintMemReg(se, mem, reg, writeSize);
}