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36 lines
1.1 KiB
36 lines
1.1 KiB
#pragma once
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#include <obf/pass.hpp>
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#include <obf/transform/operation.hpp>
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#include <obf/transform/transform.hpp>
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namespace theo::obf {
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/// <summary>
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/// this pass is like the next_inst_pass, however, relocations are encrypted
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/// with transformations instead of the address of the next instruction. this
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/// pass only runs at the instruction level and appends transformations into the
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/// reloc_t object of the instruction symbol.
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///
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/// given the following code:
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///
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/// mov rax, &MessageBoxA
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///
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/// this pass will generate a random number of transformations to encrypt the
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/// address of "MessageBoxA". These transformations will then be applied by
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/// theodosius internally when resolving relocations.
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///
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/// mov rax, enc_MessageBoxA
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/// xor rax, 0x389284324
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/// add rax, 0x345332567
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/// ror rax, 0x5353
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/// </summary>
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class reloc_transform_pass_t : public pass_t {
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explicit reloc_transform_pass_t() : pass_t(decomp::sym_type_t::instruction){};
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public:
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static reloc_transform_pass_t* get();
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void run(decomp::symbol_t* sym);
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private:
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std::optional<recomp::reloc_t*> has_legit_reloc(decomp::symbol_t* sym);
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};
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} // namespace theo::obf
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