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Precompute integrity checks

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This commit is contained in:
Maurice Heumann 2023-02-21 21:02:07 +01:00
parent 373fe1655a
commit d3095127a2
2 changed files with 1277 additions and 2 deletions
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37
src/client/component/arxan.cpp
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@ -10,6 +10,8 @@
#include <utils/string.hpp> #include <utils/string.hpp>
#include <utils/thread.hpp> #include <utils/thread.hpp>
#include "integrity.hpp"
#define ProcessDebugPort 7 #define ProcessDebugPort 7
#define ProcessDebugObjectHandle 30 #define ProcessDebugObjectHandle 30
#define ProcessDebugFlags 31 #define ProcessDebugFlags 31
@ -602,12 +604,41 @@ namespace arxan
utils::hook::call(game_address, stub); utils::hook::call(game_address, stub);
} }
void search_and_patch_integrity_checks_precomputed()
{
if (game::is_server())
{
for (const auto i : intact_integrity_check_blocks_server)
{
patch_intact_basic_block_integrity_check(reinterpret_cast<void*>(game::relocate(i)));
}
for (const auto i : split_integrity_check_blocks_server)
{
patch_split_basic_block_integrity_check(reinterpret_cast<void*>(game::relocate(i)));
}
}
else
{
for (const auto i : intact_integrity_check_blocks)
{
patch_intact_basic_block_integrity_check(reinterpret_cast<void*>(game::relocate(i)));
}
for (const auto i : split_integrity_check_blocks)
{
patch_split_basic_block_integrity_check(reinterpret_cast<void*>(game::relocate(i)));
}
}
}
void search_and_patch_integrity_checks() void search_and_patch_integrity_checks()
{ {
// There seem to be 1219 results. // There seem to be 1219 results.
// Searching them is quite slow. // Searching them is quite slow.
// Maybe precomputing that might be better? // Maybe precomputing that might be better?
const auto intact_results = "89 04 8A 83 45 ? FF"_sig;
/*const auto intact_results = "89 04 8A 83 45 ? FF"_sig;
const auto split_results = "89 04 8A E9"_sig; const auto split_results = "89 04 8A E9"_sig;
for (auto* i : intact_results) for (auto* i : intact_results)
@ -618,7 +649,9 @@ namespace arxan
for (auto* i : split_results) for (auto* i : split_results)
{ {
patch_split_basic_block_integrity_check(i); patch_split_basic_block_integrity_check(i);
} }*/
search_and_patch_integrity_checks_precomputed();
} }
LONG WINAPI exception_filter(const LPEXCEPTION_POINTERS info) LONG WINAPI exception_filter(const LPEXCEPTION_POINTERS info)

1242
src/client/component/integrity.hpp Normal file
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