diff options
Diffstat (limited to 'server')
| -rw-r--r-- | server/src/image/pe.h | 40 | ||||
| -rw-r--r-- | server/src/main.cpp | 14 | ||||
| -rw-r--r-- | server/src/server/packet.h | 5 | ||||
| -rw-r--r-- | server/src/util/util.cpp | 4 |
4 files changed, 58 insertions, 5 deletions
diff --git a/server/src/image/pe.h b/server/src/image/pe.h index 2199411..0256a8b 100644 --- a/server/src/image/pe.h +++ b/server/src/image/pe.h @@ -120,6 +120,44 @@ class image { } } + void copy(std::vector<char> &out) { + const auto nt = m_image->get_nt_headers(); + const auto n = nt->file_header.num_sections; + + out.resize(nt->optional_header.size_image); + + for (auto &sec : m_sections) { + std::memcpy(&out[sec.va], &m_buffer[sec.rva], sec.size); + } + } + + void relocate(std::vector<char> &image, uintptr_t base) { + const uint32_t delta = + base - m_image->get_nt_headers()->optional_header.image_base; + if (delta > 0) { + for (auto &[base_rva, entry] : m_relocs) { + if (entry.type == win::rel_based_high_low) { + *reinterpret_cast<uint32_t *>(image.data() + base_rva + + entry.offset) += delta; + } + } + } + } + + void fix_imports(std::vector<char> &image, const std::string_view imports) { + if (!nlohmann::json::accept(imports.data())) { + io::logger->error("imports arent valid json!!"); + return; + } + + auto j = nlohmann::json::parse(imports.data()); + for (auto &[mod, funcs] : m_imports) { + for (auto &func : funcs) { + *reinterpret_cast<uint32_t *>(image.data() + func.rva) = j[func.name]; + } + } + } + const auto operator->() { return m_image; } operator bool() const { return m_image != nullptr; } @@ -138,4 +176,6 @@ class image { } }; + + }; // namespace pe
\ No newline at end of file diff --git a/server/src/main.cpp b/server/src/main.cpp index 6350179..df3f6e8 100644 --- a/server/src/main.cpp +++ b/server/src/main.cpp @@ -169,6 +169,20 @@ int main(int argc, char* argv[]) { } } + if (id == tcp::packet_id::game_select) { + // select image + // set message to be pe header + // stream imports + // wait for client to send back a packet with allocation base and fixed imports + } + + if (id == tcp::packet_id::image) { + // message contains allocation base + // fixed imports are streamed back/save them in a folder to see if anything went wrong + // stream back the fixed image + // set client status or just drop them + } + client.write(tcp::packet_t(message, tcp::packet_type::write, session)); }); diff --git a/server/src/server/packet.h b/server/src/server/packet.h index 77bca7b..626d340 100644 --- a/server/src/server/packet.h +++ b/server/src/server/packet.h @@ -18,10 +18,7 @@ enum packet_id { process_list, ban, game_select, - image_req, - image_resp, - import_req, - import_resp + image }; struct packet_t { diff --git a/server/src/util/util.cpp b/server/src/util/util.cpp index 799663f..1cb6367 100644 --- a/server/src/util/util.cpp +++ b/server/src/util/util.cpp @@ -4,4 +4,6 @@ void util::to_lowercase(std::string &str) { std::transform(str.begin(), str.end(), str.begin(), ::tolower); -}
\ No newline at end of file +} + + |