mirror of
https://github.com/mirkobrombin/raven.git
synced 2026-10-30 21:35:06 +00:00
76 lines
2.6 KiB
C
76 lines
2.6 KiB
C
#include <windows.h>
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#include <stdint.h>
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typedef DWORD (WINAPI *read_fn)(void);
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typedef DWORD (WINAPI *write_fn)(DWORD);
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static BOOL listed(HMODULE module, BOOL expected)
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{
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uintptr_t peb;
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__asm__("movq %%gs:0x60,%0" : "=r"(peb));
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const uintptr_t loader = *(uintptr_t *)(peb + 0x18);
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if (!loader)
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return FALSE;
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for (unsigned offset = 0x10; offset <= 0x30; offset += 0x10) {
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uintptr_t *head = (uintptr_t *)(loader + offset);
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uintptr_t *previous = head;
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unsigned matches = 0, count = 0;
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for (uintptr_t *link = (uintptr_t *)head[0]; link != head; link = (uintptr_t *)link[0]) {
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if (++count > 10000 || link[1] != (uintptr_t)previous)
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return FALSE;
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const uintptr_t entry = (uintptr_t)link - (offset - 0x10);
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matches += *(uintptr_t *)(entry + 0x30) == (uintptr_t)module;
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previous = link;
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}
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if (head[1] != (uintptr_t)previous || matches != (unsigned)expected)
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return FALSE;
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}
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return TRUE;
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}
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DWORD raven_entry(void)
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{
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SetLastError(99);
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if (GetModuleHandleA("tlsprobe.dll"))
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return 1;
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HMODULE first = LoadLibraryA("TLSPROBE");
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if (!first || !listed(first, TRUE))
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return 2;
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read_fn read = (read_fn)GetProcAddress(first, "ReadTLSValue");
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write_fn write = (write_fn)GetProcAddress(first, "WriteTLSValue");
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read_fn query = (read_fn)GetProcAddress(first, "QueryTLS");
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if (!read || !write || !query || read() != 19 || !query() || write(91) != 19)
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return 3;
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HMODULE second = LoadLibraryW(L"tlsprobe.dll");
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if (second != first || read() != 91 || !FreeLibrary(first) || read() != 91 || !listed(second, TRUE))
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return 4;
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if (!FreeLibrary(second) || GetModuleHandleW(L"tlsprobe.dll") || !listed(second, FALSE))
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return 5;
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if (FreeLibrary(second) || GetLastError() != ERROR_MOD_NOT_FOUND)
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return 6;
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first = LoadLibraryA("tlsprobe.dll");
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if (!first)
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return 7;
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read = (read_fn)GetProcAddress(first, "ReadTLSValue");
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if (!read || read() != 19 || !FreeLibrary(first))
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return 8;
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HMODULE parent = LoadLibraryA("parent.dll");
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if (!parent)
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return 9;
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query = (read_fn)GetProcAddress(parent, "QueryDependency");
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if (!query || !query() || !GetModuleHandleA("tlsprobe.dll"))
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return 10;
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first = LoadLibraryA("tlsprobe.dll");
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if (!first || !FreeLibrary(parent) || !GetModuleHandleA("tlsprobe.dll") || !FreeLibrary(first))
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return 11;
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if (GetModuleHandleA("parent.dll") || GetModuleHandleA("tlsprobe.dll"))
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return 12;
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if (LoadLibraryA("reject.dll") || GetLastError() != ERROR_DLL_INIT_FAILED)
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return 13;
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if (GetModuleHandleA("reject.dll") || GetModuleHandleA("tlsprobe.dll"))
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return 14;
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if (LoadLibraryA("missing.dll") || GetLastError() != ERROR_MOD_NOT_FOUND)
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return 15;
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return 0;
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}
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