OD/CE 过掉TMD壳附加检查
恢复OD进程附加原理
1、恢复DbgBreakPoint和DbgUiRemoteBreakin被HOOK代码
//由于我是使用ntdll SDK,可直接使用NTDLL中的API,如果你们不能使用,直接用GetProcAddress获取API
注意该处的修复,自己可以写个HOOK，放到LoadLibrary，每次加载DLL时候，就处理一次,防止某些DLL还有TMD壳，又会被恢复
ntdll->DbgBreakPoint 被TMD壳修改为retn -> 0xC3
DWORD lpflOldProtect;
LPVOID ulAddress = DbgBreakPoint;
VirtualProtect(ulAddress,1,PAGE_EXECUTE_READWRITE,&lpflOldProtect);
*(BYTE*)(ulAddress) = 0xCC;
ntdll->DbgUiRemoteBreakin 被TMD修改为 JMP LdrShutdownProcess
ulAddress = DbgUiRemoteBreakin
VirtualProtect(ulAddress,1,PAGE_EXECUTE_READWRITE,&lpProtect);
*(BYTE*)(ulAddress) =0x6A;
*(DWORD*)((BYTE*)ulAddress+1)= 0xFC686808;
2、修复允许CE的附加
第一步虽然修复了允许附加,但TMD壳本身还自带线程检查ANTI，所以我们要终止掉这些线程
BOOL WINAPI _AhnHS_GetThreadModuleName(char* szModuleName,DWORD szThreadId,LPVOID & StartAddress,HANDLE & hThread) {
hThread= OpenThread(THREAD_ALL_ACCESS, FALSE, szThreadId);
if (!hThread) return FALSE;
LONG status
= ZwQueryInformationThread(hThread, ThreadQuerySetWin32StartAddress, &StartAddress, sizeof(StartAddress), NULL);
if(status <0) {
CloseHandle(hThread);
SetLastError(RtlNtStatusToDosError(status));
return FALSE;
}
return (GetMappedFileNameA(GetCurrentProcess(), StartAddress, szModuleName, MAX_PATH)>=0) ? TRUE : FALSE;
}
void WINAPI _AhnHS_PassThreadByTMD() {
HANDLE hThreadSnap , hThread;
THREADENTRY32 te32 = {0};
CONTEXT context= {0};
hThreadSnap = CreateToolhelp32Snapshot(TH32CS_SNAPTHREAD, 0);
if ( hThreadSnap == INVALID_HANDLE_VALUE )
return;
memset(&te32, 0, sizeof(THREADENTRY32));
te32.dwSize= sizeof(THREADENTRY32);
BOOL dwRet = Thread32First(hThreadSnap, &te32);
DWORD dwCurrentProcessId = GetCurrentProcessId();
do {
if (te32.th32OwnerProcessID != dwCurrentProcessId) continue;
char szModuleFileName;
LPVOIDStartAddress;
if(!_AhnHS_GetThreadModuleName(szModuleFileName,te32.th32ThreadID,StartAddress,hThread)) continue;
char* pszName
= (strrchr(szModuleFileName,'\\')) ? strrchr(szModuleFileName,'\\')+1 : szModuleFileName;
//AntiHookGetMainThreadId()=主线程ID，可自行修改
if(lstrcmpiA(pszName,AntiHookGetModuleInfo()->AppName)==0 && AntiHookGetMainThreadId()!=te32.th32ThreadID) {
//远程线程非代码块,为其它检查线程，终止
HMODULElib = GetModuleHandleA(pszName);
PIMAGE_NT_HEADERS
nth =PIMAGE_NT_HEADERS(PBYTE(lib) + PIMAGE_DOS_HEADER(lib)->e_lfanew);
IMAGE_SECTION_HEADER
*pSection =
(IMAGE_SECTION_HEADER*)((DWORD)nth + sizeof(IMAGE_NT_HEADERS));
if((DWORD)StartAddress>(pSection.VirtualAddress+(DWORD)lib) && (DWORD)StartAddress<pSection.VirtualAddress+(DWORD)lib) continue;
TerminateThread(hThread,0);
}
CloseHandle(hThread);
}
while(Thread32Next(hThreadSnap, &te32));
CloseHandle(hThreadSnap);
}
OK，万事大吉，世界清静了
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