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* group multiple .bind variants with same details

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* support 32-bit .bind variant from 2014
This commit is contained in:
a 2024-11-16 11:49:43 +02:00
parent a1462a9eca
commit 9251be01bb
1 changed files with 55 additions and 38 deletions
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69
tools/steamclient_loader/win/extra_protection/stubdrm.cpp
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@ -29,7 +29,7 @@ typedef struct _StubSnrDetails_t {
} StubSnrDetails_t; } StubSnrDetails_t;
typedef struct _BindSnrDetails_t { typedef struct _BindSnrDetails_t {
std::string bind_detection_patt{}; // inside .bind std::vector<std::string> bind_detection_patts{}; // any pattern inside .bind
std::vector<StubSnrDetails_t> stub_details{}; std::vector<StubSnrDetails_t> stub_details{};
} BindSnrDetails_t; } BindSnrDetails_t;
@ -38,16 +38,18 @@ static const std::vector<BindSnrDetails_t> all_bind_details {
// x64 // x64
#if defined(_WIN64) #if defined(_WIN64)
{ {
// bind_detection_patt // bind_detection_patts[]
{
"FF 94 24 ?? ?? ?? ?? 88 44 24 ?? 0F BE 44 24 ?? 83 ?? 30 74 ?? E9", // appid 1684350 "FF 94 24 ?? ?? ?? ?? 88 44 24 ?? 0F BE 44 24 ?? 83 ?? 30 74 ?? E9", // appid 1684350
// stub_details },
// stub_details[]
{ {
{ {
// stub_detection_patt // stub_detection_patt
"??", "??",
// change memory pages access to r/w/e // change memory pages access to r/w/e
false, false,
// stub_snr_units // stub_snr_units[]
{ {
// patt 1 is a bunch of checks for registry + files validity (including custom DOS stub) // patt 1 is a bunch of checks for registry + files validity (including custom DOS stub)
// patt 2 is again a bunch of checks + creates some interfaces via steamclient + calls getappownershipticket() // patt 2 is again a bunch of checks + creates some interfaces via steamclient + calls getappownershipticket()
@ -65,16 +67,18 @@ static const std::vector<BindSnrDetails_t> all_bind_details {
}, },
{ {
// bind_detection_patt // bind_detection_patts[]
{
"FF D? 44 0F B6 ?? 3C 30 0F 85", // appid: 537450 (rare, only found in this appid!) "FF D? 44 0F B6 ?? 3C 30 0F 85", // appid: 537450 (rare, only found in this appid!)
// stub_details },
// stub_details[]
{ {
{ {
// stub_detection_patt // stub_detection_patt
"??", "??",
// change memory pages access to r/w/e // change memory pages access to r/w/e
false, false,
// stub_snr_units // stub_snr_units[]
{ {
// patt 1 is a bunch of checks for registry + files validity (including custom DOS stub) // patt 1 is a bunch of checks for registry + files validity (including custom DOS stub)
// patt 2 is again a bunch of checks + creates some interfaces via steamclient + calls getappownershipticket() // patt 2 is again a bunch of checks + creates some interfaces via steamclient + calls getappownershipticket()
@ -96,16 +100,18 @@ static const std::vector<BindSnrDetails_t> all_bind_details {
// x32 // x32
#if !defined(_WIN64) #if !defined(_WIN64)
{ {
// bind_detection_patt // bind_detection_patts[]
{
"FF 95 ?? ?? ?? ?? 88 45 ?? 0F BE 4D ?? 83 ?? 30 74 ?? E9", // appid 588650 "FF 95 ?? ?? ?? ?? 88 45 ?? 0F BE 4D ?? 83 ?? 30 74 ?? E9", // appid 588650
// stub_details },
// stub_details[]
{ {
{ {
// stub_detection_patt // stub_detection_patt
"??", "??",
// change memory pages access to r/w/e // change memory pages access to r/w/e
false, false,
// stub_snr_units // stub_snr_units[]
{ {
// patt 1 is a bunch of checks for registry + files validity (including custom DOS stub) // patt 1 is a bunch of checks for registry + files validity (including custom DOS stub)
// patt 2 is again a bunch of checks + creates some interfaces via steamclient + calls getappownershipticket() // patt 2 is again a bunch of checks + creates some interfaces via steamclient + calls getappownershipticket()
@ -123,16 +129,18 @@ static const std::vector<BindSnrDetails_t> all_bind_details {
}, },
{ {
// bind_detection_patt // bind_detection_patts[]
{
"FF 95 ?? ?? ?? ?? 89 85 ?? ?? ?? ?? 8B ?? ?? ?? ?? ?? 89 ?? ?? ?? ?? ?? 8B ?? ?? 89 ?? ?? ?? ?? ?? 83 A5 ?? ?? ?? ?? ?? EB", // appid 201790 "FF 95 ?? ?? ?? ?? 89 85 ?? ?? ?? ?? 8B ?? ?? ?? ?? ?? 89 ?? ?? ?? ?? ?? 8B ?? ?? 89 ?? ?? ?? ?? ?? 83 A5 ?? ?? ?? ?? ?? EB", // appid 201790
// stub_details },
// stub_details[]
{ {
{ {
// stub_detection_patt // stub_detection_patt
"??", "??",
// change memory pages access to r/w/e // change memory pages access to r/w/e
true, // appid 48000 true, // appid 48000
// stub_snr_units // stub_snr_units[]
{ {
{ {
"F6 C? 02 0F 85 ?? ?? ?? ?? 5? FF ?? 6?", "F6 C? 02 0F 85 ?? ?? ?? ?? 5? FF ?? 6?",
@ -152,16 +160,19 @@ static const std::vector<BindSnrDetails_t> all_bind_details {
}, },
{ {
// bind_detection_patt // bind_detection_patts[]
{
"FF D? 88 45 ?? 3C 30 0F 85 ?? ?? ?? ?? B8 4D 5A", "FF D? 88 45 ?? 3C 30 0F 85 ?? ?? ?? ?? B8 4D 5A",
// stub_details "FF D? 88 45 ?? 3C 30 0F 84 ?? ?? ?? ?? FF 9?", // appid 251390
},
// stub_details[]
{ {
{ {
// stub_detection_patt // stub_detection_patt
"??", "??",
// change memory pages access to r/w/e // change memory pages access to r/w/e
false, false,
// stub_snr_units // stub_snr_units[]
{ {
{ {
"5? E8 ?? ?? ?? ?? 83 C4 ?? 88 45 ?? 3C 30 0F 84", "5? E8 ?? ?? ?? ?? 83 C4 ?? 88 45 ?? 3C 30 0F 84",
@ -177,16 +188,18 @@ static const std::vector<BindSnrDetails_t> all_bind_details {
}, },
{ {
// bind_detection_patt // bind_detection_patts[]
{
"FF 95 ?? ?? ?? ?? 89 85 ?? ?? ?? ?? 8B ?? ?? ?? ?? ?? 89 ?? ?? ?? ?? ?? 8B ?? ?? ?? ?? ?? 89 ?? ?? ?? ?? ?? 83 A5 ?? ?? ?? ?? ?? EB", // appids: 31290, 94530, 37010 "FF 95 ?? ?? ?? ?? 89 85 ?? ?? ?? ?? 8B ?? ?? ?? ?? ?? 89 ?? ?? ?? ?? ?? 8B ?? ?? ?? ?? ?? 89 ?? ?? ?? ?? ?? 83 A5 ?? ?? ?? ?? ?? EB", // appids: 31290, 94530, 37010
// stub_details },
// stub_details[]
{ {
{ // appid 31290, 37010 { // appid 31290, 37010
// stub_detection_patt // stub_detection_patt
"F6 05 ?? ?? ?? ?? 04 0F 85 ?? ?? ?? ?? A1 ?? ?? ?? ?? 89", "F6 05 ?? ?? ?? ?? 04 0F 85 ?? ?? ?? ?? A1 ?? ?? ?? ?? 89",
// change memory pages access to r/w/e // change memory pages access to r/w/e
false, false,
// stub_snr_units // stub_snr_units[]
{ {
{ {
"F6 C? 02 89 ?? ?? ?? ?? ?? A3 ?? ?? ?? ?? 0F 85", "F6 C? 02 89 ?? ?? ?? ?? ?? A3 ?? ?? ?? ?? 0F 85",
@ -200,7 +213,7 @@ static const std::vector<BindSnrDetails_t> all_bind_details {
"84 ?? ?? ?? ?? ?? 0F 85 ?? ?? ?? ?? A1 ?? ?? ?? ?? 89", "84 ?? ?? ?? ?? ?? 0F 85 ?? ?? ?? ?? A1 ?? ?? ?? ?? 89",
// change memory pages access to r/w/e // change memory pages access to r/w/e
false, false,
// stub_snr_units // stub_snr_units[]
{ {
{ {
"F6 C? 02 89 ?? ?? ?? ?? ?? A3 ?? ?? ?? ?? 0F 85", "F6 C? 02 89 ?? ?? ?? ?? ?? A3 ?? ?? ?? ?? 0F 85",
@ -312,9 +325,9 @@ static void patch_if_possible(void *ret_addr)
if (mem) { if (mem) {
anything_found = true; anything_found = true;
auto size_until_match = (uint8_t *)mem - (uint8_t *)page_details.BaseAddress; auto size_until_match = mem - (uint8_t *)page_details.BaseAddress;
bool ok = pe_helpers::replace_memory( bool ok = pe_helpers::replace_memory(
(uint8_t *)mem, mem,
page_details.RegionSize - size_until_match, page_details.RegionSize - size_until_match,
snr_unit.replace_patt, snr_unit.replace_patt,
GetCurrentProcess()); GetCurrentProcess());
@ -487,18 +500,22 @@ bool stubdrm::patch()
auto addrOfEntry = exe_addr_base + pe_helpers::get_optional_header((HMODULE)exe_addr_base)->AddressOfEntryPoint; auto addrOfEntry = exe_addr_base + pe_helpers::get_optional_header((HMODULE)exe_addr_base)->AddressOfEntryPoint;
if (addrOfEntry < bind_addr_base || addrOfEntry >= bind_addr_end) return false; // entry addr is not inside .bind if (addrOfEntry < bind_addr_base || addrOfEntry >= bind_addr_end) return false; // entry addr is not inside .bind
// find .bind variant // detect .bind variant, search for a known pattern inside the .bind section itself
for (const auto &patt : all_bind_details) { for (const auto &bind_details : all_bind_details) {
// multiple variants of .bind sections can share the same details,
// hence similar ones are grouped together, their detection patterns are added to the same array
for (const auto &bind_detection_patt : bind_details.bind_detection_patts) {
auto mem = pe_helpers::search_memory( auto mem = pe_helpers::search_memory(
bind_addr_base, bind_addr_base,
static_cast<size_t>(bind_addr_end - bind_addr_base), static_cast<size_t>(bind_addr_end - bind_addr_base),
patt.bind_detection_patt); bind_detection_patt);
if (mem) { if (mem) {
current_bind_idx = static_cast<size_t>(&patt - &all_bind_details[0]); current_bind_idx = static_cast<size_t>(&bind_details - &all_bind_details[0]);
return redirect_win32_apis(); return redirect_win32_apis();
} }
} }
}
return false; return false;
} }