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33 lines
1.3 KiB
33 lines
1.3 KiB
3 years ago
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#pragma once
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#include <obf/transform/transform.hpp>
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#include <recomp/reloc.hpp>
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namespace theo::obf::transform {
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inline std::vector<std::uint8_t> generate(xed_decoded_inst_t* inst,
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recomp::reloc_t* reloc,
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std::uint8_t low,
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std::uint8_t high) {
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auto num_transforms = transform::operation_t::random(low, high);
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auto num_ops = transform::operations.size();
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std::vector<std::uint8_t> new_inst_bytes;
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for (auto cnt = 0u; cnt < num_transforms; ++cnt) {
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std::uint32_t imm = transform::operation_t::random(
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0, std::numeric_limits<std::int32_t>::max());
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auto itr = transform::operations.begin();
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std::advance(itr, transform::operation_t::random(0, num_ops - 1));
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auto transform_bytes = itr->second->native(inst, imm);
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new_inst_bytes.insert(new_inst_bytes.end(), transform_bytes.begin(),
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transform_bytes.end());
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reloc->add_transform(
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{transform::operations[itr->second->inverse()]->get_transform(), imm});
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}
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// inverse the order in which the transformations are executed...
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//
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std::reverse(reloc->get_transforms().begin(), reloc->get_transforms().end());
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return new_inst_bytes;
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}
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} // namespace theo::obf
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