Clone/plexmediaserver_crack
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Standardized code between Windows and Linux versions.

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This commit is contained in:
yuv420p10le 2024-05-26 19:49:28 +03:00
parent 791525f2eb
commit cfccf82908
4 changed files with 36 additions and 18 deletions
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19
linux/hook.cpp
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@ -28,6 +28,21 @@ bool get_dottext_info(uintptr_t& start, uintptr_t& end)
return false;
}
void write_jmp(const uintptr_t from, const uintptr_t to)
{
uint8_t shellcode[] =
{
0xFF, 0x25, 0x00, 0x00, 0x00, 0x00, // jmp [rip+0x06]
0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00 // ?
};
*reinterpret_cast<uintptr_t*>(&shellcode[6]) = to;
mprotect(reinterpret_cast<void*>(from), sizeof(shellcode), PROT_READ|PROT_WRITE|PROT_EXEC);
memcpy(reinterpret_cast<void*>(from), shellcode, sizeof(shellcode));
mprotect(reinterpret_cast<void*>(from), sizeof(shellcode), PROT_READ|PROT_EXEC);
}
uintptr_t sig_scan(const uintptr_t start, const uintptr_t end, std::string_view pattern)
{
constexpr const uint16_t WILDCARD = 0xFFFF;
@ -116,7 +131,5 @@ void hook()
*reinterpret_cast<decltype(&hook_is_feature_available)*>(&shellcode[6]) = &hook_is_feature_available;
mprotect(reinterpret_cast<void*>(_is_feature_available), sizeof(shellcode), PROT_READ|PROT_WRITE|PROT_EXEC);
memcpy(reinterpret_cast<void*>(_is_feature_available), shellcode, sizeof(shellcode));
mprotect(reinterpret_cast<void*>(_is_feature_available), sizeof(shellcode), PROT_READ|PROT_EXEC);
write_jmp(_is_feature_available, reinterpret_cast<uintptr_t>(&hook_is_feature_available));
}

1
linux/hook.hpp
View File

@ -4,6 +4,7 @@
#include <string>
bool get_dottext_info(uintptr_t& start, uintptr_t& end);
void write_jmp(const uintptr_t from, const uintptr_t to);
uintptr_t sig_scan(const uintptr_t start, const uintptr_t end, std::string_view pattern);
uint64_t hook_is_feature_available(uintptr_t user, const char* feature);
void hook();

33
windows/hook.cpp
View File

@ -4,7 +4,6 @@
#define NOMINMAX
#include <Windows.h>
#include <format>
#include <vector>
#include <dbghelp.h>
#include <iostream>
@ -38,6 +37,22 @@ bool get_section_info(std::string_view name, uintptr_t& start, uintptr_t& end)
return false;
}
void write_jmp(const uintptr_t from, const uintptr_t to)
{
uint8_t shellcode[] =
{
0xFF, 0x25, 0x00, 0x00, 0x00, 0x00, // jmp [rip+0x06]
0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00 // ?
};
*reinterpret_cast<uintptr_t*>(&shellcode[6]) = to;
DWORD old_prot;
VirtualProtect(reinterpret_cast<void*>(from), sizeof(shellcode), PAGE_EXECUTE_READWRITE, &old_prot);
memcpy(reinterpret_cast<void*>(from), shellcode, sizeof(shellcode));
VirtualProtect(reinterpret_cast<void*>(from), sizeof(shellcode), old_prot, &old_prot);
}
uintptr_t sig_scan(const uintptr_t start, const uintptr_t end, std::string_view pattern)
{
constexpr const uint16_t WILDCARD = 0xFFFF;
@ -77,7 +92,7 @@ uintptr_t sig_scan(const uintptr_t start, const uintptr_t end, std::string_view
break;
}
end_address = std::min(end, reinterpret_cast<uintptr_t>(mbi.BaseAddress) + mbi.RegionSize);
end_address = std::min(end, static_cast<uintptr_t>(reinterpret_cast<uintptr_t>(mbi.BaseAddress) + mbi.RegionSize));
}
const auto vec_length = pattern_vec.size();
@ -134,18 +149,6 @@ void hook()
return;
}
// Jumps to specified address
uint8_t shellcode[] =
{
0xFF, 0x25, 0x00, 0x00, 0x00, 0x00, // jmp [rip+0x06]
0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00 // ?
};
*reinterpret_cast<decltype(&hook_is_feature_available)*>(&shellcode[6]) = &hook_is_feature_available;
DWORD old_prot;
VirtualProtect(reinterpret_cast<void*>(_is_feature_available), sizeof(shellcode), PAGE_EXECUTE_READWRITE, &old_prot);
memcpy(reinterpret_cast<void*>(_is_feature_available), shellcode, sizeof(shellcode));
VirtualProtect(reinterpret_cast<void*>(_is_feature_available), sizeof(shellcode), old_prot, &old_prot);
write_jmp(_is_feature_available, reinterpret_cast<uintptr_t>(&hook_is_feature_available));
}

1
windows/hook.hpp
View File

@ -4,6 +4,7 @@
#include <string>
bool get_section_info(std::string_view name, uintptr_t& start, uintptr_t& end);
void write_jmp(const uintptr_t from, const uintptr_t to);
uintptr_t sig_scan(const uintptr_t start, const uintptr_t end, std::string_view pattern);
uint64_t hook_is_feature_available(uintptr_t user, const char* feature);
void hook();