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kull_m_dpapi.c
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kull_m_dpapi.c
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/* Benjamin DELPY `gentilkiwi`
https://blog.gentilkiwi.com
Licence : https://creativecommons.org/licenses/by/4.0/
*/
#include "kull_m_dpapi.h"
const GUID KULL_M_DPAPI_GUID_PROVIDER = CRYPTPROTECT_DEFAULT_PROVIDER;
PKULL_M_DPAPI_BLOB kull_m_dpapi_blob_create(LPCVOID data/*, DWORD size*/)
{
PKULL_M_DPAPI_BLOB blob = NULL;
if(data && (blob = (PKULL_M_DPAPI_BLOB) LocalAlloc(LPTR, sizeof(KULL_M_DPAPI_BLOB))))
{
RtlCopyMemory(blob, data, FIELD_OFFSET(KULL_M_DPAPI_BLOB, szDescription));
blob->szDescription = (PWSTR) ((PBYTE) data + FIELD_OFFSET(KULL_M_DPAPI_BLOB, szDescription));
RtlCopyMemory(&blob->algCrypt, (PBYTE) blob->szDescription + blob->dwDescriptionLen, /*blob->dwDescriptionLen + */FIELD_OFFSET(KULL_M_DPAPI_BLOB, pbSalt) - FIELD_OFFSET(KULL_M_DPAPI_BLOB, algCrypt));
blob->pbSalt = (PBYTE) blob->szDescription + blob->dwDescriptionLen + FIELD_OFFSET(KULL_M_DPAPI_BLOB, pbSalt) - FIELD_OFFSET(KULL_M_DPAPI_BLOB, algCrypt);
blob->dwHmacKeyLen = *(PDWORD) ((PBYTE) blob->pbSalt + blob->dwSaltLen);
blob->pbHmackKey = (PBYTE) blob->pbSalt + blob->dwSaltLen + FIELD_OFFSET(KULL_M_DPAPI_BLOB, pbHmackKey) - FIELD_OFFSET(KULL_M_DPAPI_BLOB, dwHmacKeyLen);
RtlCopyMemory(&blob->algHash, (PBYTE) blob->pbHmackKey + blob->dwHmacKeyLen, /*blob->dwHmacKeyLen + */FIELD_OFFSET(KULL_M_DPAPI_BLOB, pbHmack2Key) - FIELD_OFFSET(KULL_M_DPAPI_BLOB, algHash));
blob->pbHmack2Key = (PBYTE) blob->pbHmackKey + blob->dwHmacKeyLen + FIELD_OFFSET(KULL_M_DPAPI_BLOB, pbHmack2Key) - FIELD_OFFSET(KULL_M_DPAPI_BLOB, algHash);
blob->dwDataLen = *(PDWORD) ((PBYTE) blob->pbHmack2Key + blob->dwHmac2KeyLen);
blob->pbData = (PBYTE) blob->pbHmack2Key + blob->dwHmac2KeyLen + FIELD_OFFSET(KULL_M_DPAPI_BLOB, pbData) - FIELD_OFFSET(KULL_M_DPAPI_BLOB, dwDataLen);
blob->dwSignLen = *(PDWORD) ((PBYTE) blob->pbData + blob->dwDataLen);
blob->pbSign = (PBYTE) blob->pbData + blob->dwDataLen + FIELD_OFFSET(KULL_M_DPAPI_BLOB, pbSign) - FIELD_OFFSET(KULL_M_DPAPI_BLOB, dwSignLen);
kull_m_string_ptr_replace(&blob->szDescription, blob->dwDescriptionLen);
kull_m_string_ptr_replace(&blob->pbSalt, blob->dwSaltLen);
kull_m_string_ptr_replace(&blob->pbHmackKey, blob->dwHmacKeyLen);
kull_m_string_ptr_replace(&blob->pbHmack2Key, blob->dwHmac2KeyLen);
kull_m_string_ptr_replace(&blob->pbData, blob->dwDataLen);
kull_m_string_ptr_replace(&blob->pbSign, blob->dwSignLen);
}
return blob;
}
void kull_m_dpapi_blob_delete(PKULL_M_DPAPI_BLOB blob)
{
if(blob)
{
if(blob->szDescription)
LocalFree(blob->szDescription);
if(blob->pbSalt)
LocalFree(blob->pbSalt);
if(blob->pbHmackKey)
LocalFree(blob->pbHmackKey);
if(blob->pbHmack2Key)
LocalFree(blob->pbHmack2Key);
if(blob->pbData)
LocalFree(blob->pbData);
if(blob->pbSign)
LocalFree(blob->pbSign);
LocalFree(blob);
}
}
void kull_m_dpapi_blob_descr(DWORD level, PKULL_M_DPAPI_BLOB blob)
{
kprintf(L"%*s" L"**BLOB**\n", level << 1, L"");
if(blob)
{
kprintf(L"%*s" L" dwVersion : %08x - %u\n", level << 1, L"", blob->dwVersion, blob->dwVersion);
kprintf(L"%*s" L" guidProvider : ", level << 1, L""); kull_m_string_displayGUID(&blob->guidProvider); kprintf(L"\n");
kprintf(L"%*s" L" dwMasterKeyVersion : %08x - %u\n", level << 1, L"", blob->dwMasterKeyVersion, blob->dwMasterKeyVersion);
kprintf(L"%*s" L" guidMasterKey : ", level << 1, L""); kull_m_string_displayGUID(&blob->guidMasterKey); kprintf(L"\n");
kprintf(L"%*s" L" dwFlags : %08x - %u (", level << 1, L"", blob->dwFlags, blob->dwFlags);
kull_m_dpapi_displayBlobFlags(blob->dwFlags);
kprintf(L")\n");
kprintf(L"%*s" L" dwDescriptionLen : %08x - %u\n", level << 1, L"", blob->dwDescriptionLen, blob->dwDescriptionLen);
kprintf(L"%*s" L" szDescription : %s\n", level << 1, L"", blob->szDescription);
kprintf(L"%*s" L" algCrypt : %08x - %u (%s)\n", level << 1, L"", blob->algCrypt, blob->algCrypt, kull_m_crypto_algid_to_name(blob->algCrypt));
kprintf(L"%*s" L" dwAlgCryptLen : %08x - %u\n", level << 1, L"", blob->dwAlgCryptLen, blob->dwAlgCryptLen);
kprintf(L"%*s" L" dwSaltLen : %08x - %u\n", level << 1, L"", blob->dwSaltLen, blob->dwSaltLen);
kprintf(L"%*s" L" pbSalt : ", level << 1, L""); kull_m_string_wprintf_hex(blob->pbSalt, blob->dwSaltLen, 0); kprintf(L"\n");
kprintf(L"%*s" L" dwHmacKeyLen : %08x - %u\n", level << 1, L"", blob->dwHmacKeyLen, blob->dwHmacKeyLen);
kprintf(L"%*s" L" pbHmackKey : ", level << 1, L""); kull_m_string_wprintf_hex(blob->pbHmackKey, blob->dwHmacKeyLen, 0); kprintf(L"\n");
kprintf(L"%*s" L" algHash : %08x - %u (%s)\n", level << 1, L"", blob->algHash, blob->algHash, kull_m_crypto_algid_to_name(blob->algHash));
kprintf(L"%*s" L" dwAlgHashLen : %08x - %u\n", level << 1, L"", blob->dwAlgHashLen, blob->dwAlgHashLen);
kprintf(L"%*s" L" dwHmac2KeyLen : %08x - %u\n", level << 1, L"", blob->dwHmac2KeyLen, blob->dwHmac2KeyLen);
kprintf(L"%*s" L" pbHmack2Key : ", level << 1, L""); kull_m_string_wprintf_hex(blob->pbHmack2Key, blob->dwHmac2KeyLen, 0); kprintf(L"\n");
kprintf(L"%*s" L" dwDataLen : %08x - %u\n", level << 1, L"", blob->dwDataLen, blob->dwDataLen);
kprintf(L"%*s" L" pbData : ", level << 1, L""); kull_m_string_wprintf_hex(blob->pbData, blob->dwDataLen, 0); kprintf(L"\n");
kprintf(L"%*s" L" dwSignLen : %08x - %u\n", level << 1, L"", blob->dwSignLen, blob->dwSignLen);
kprintf(L"%*s" L" pbSign : ", level << 1, L""); kull_m_string_wprintf_hex(blob->pbSign, blob->dwSignLen, 0); kprintf(L"\n\n");
}
}
void kull_m_dpapi_blob_quick_descr(DWORD level, LPCVOID data/*, DWORD size*/)
{
PKULL_M_DPAPI_BLOB blob;
if(blob = kull_m_dpapi_blob_create(data))
{
kull_m_dpapi_blob_descr(level, blob);
kull_m_dpapi_blob_delete(blob);
}
}
PKULL_M_DPAPI_MASTERKEY kull_m_dpapi_masterkey_create(LPCVOID data, DWORD64 size)
{
PKULL_M_DPAPI_MASTERKEY masterkey = NULL;
if(data && (masterkey = (PKULL_M_DPAPI_MASTERKEY) LocalAlloc(LPTR, sizeof(KULL_M_DPAPI_MASTERKEY))))
{
RtlCopyMemory(masterkey, data, FIELD_OFFSET(KULL_M_DPAPI_MASTERKEY, pbKey));
masterkey->pbKey = (PBYTE) data + FIELD_OFFSET(KULL_M_DPAPI_MASTERKEY, pbKey);
masterkey->__dwKeyLen = (DWORD) size - FIELD_OFFSET(KULL_M_DPAPI_MASTERKEY, pbKey);
kull_m_string_ptr_replace(&masterkey->pbKey, masterkey->__dwKeyLen);
}
return masterkey;
}
void kull_m_dpapi_masterkey_delete(PKULL_M_DPAPI_MASTERKEY masterkey)
{
if(masterkey)
{
if(masterkey->pbKey)
LocalFree(masterkey->pbKey);
LocalFree(masterkey);
}
}
void kull_m_dpapi_masterkey_descr(DWORD level, PKULL_M_DPAPI_MASTERKEY masterkey)
{
kprintf(L"%*s" L"**MASTERKEY**\n", level << 1, L"");
if(masterkey)
{
kprintf(L"%*s" L" dwVersion : %08x - %u\n", level << 1, L"", masterkey->dwVersion, masterkey->dwVersion);
kprintf(L"%*s" L" salt : ", level << 1, L""); kull_m_string_wprintf_hex(masterkey->salt, sizeof(masterkey->salt), 0); kprintf(L"\n");
kprintf(L"%*s" L" rounds : %08x - %u\n", level << 1, L"", masterkey->rounds, masterkey->rounds);
kprintf(L"%*s" L" algHash : %08x - %u (%s)\n", level << 1, L"", masterkey->algHash, masterkey->algHash, kull_m_crypto_algid_to_name(masterkey->algHash));
kprintf(L"%*s" L" algCrypt : %08x - %u (%s)\n", level << 1, L"", masterkey->algCrypt, masterkey->algCrypt, kull_m_crypto_algid_to_name(masterkey->algCrypt));
kprintf(L"%*s" L" pbKey : ", level << 1, L""); kull_m_string_wprintf_hex(masterkey->pbKey, masterkey->__dwKeyLen, 0); kprintf(L"\n\n");
}
}
PBYTE kull_m_dpapi_masterkey_tobin(PKULL_M_DPAPI_MASTERKEY masterkey, OPTIONAL DWORD64 *size)
{
PBYTE data = NULL;
if(data = (PBYTE) LocalAlloc(LPTR, FIELD_OFFSET(KULL_M_DPAPI_MASTERKEY, pbKey) + masterkey->__dwKeyLen))
{
RtlCopyMemory(data, masterkey, FIELD_OFFSET(KULL_M_DPAPI_MASTERKEY, pbKey));
RtlCopyMemory(data + FIELD_OFFSET(KULL_M_DPAPI_MASTERKEY, pbKey), masterkey->pbKey, masterkey->__dwKeyLen);
if(size)
*size = FIELD_OFFSET(KULL_M_DPAPI_MASTERKEY, pbKey) + masterkey->__dwKeyLen;
}
return data;
}
PKULL_M_DPAPI_MASTERKEY_CREDHIST kull_m_dpapi_masterkeys_credhist_create(LPCVOID data, DWORD64 size)
{
PKULL_M_DPAPI_MASTERKEY_CREDHIST credhist = NULL;
if(data && (credhist = (PKULL_M_DPAPI_MASTERKEY_CREDHIST) LocalAlloc(LPTR, sizeof(KULL_M_DPAPI_MASTERKEY_CREDHIST))))
RtlCopyMemory(credhist, data, sizeof(KULL_M_DPAPI_MASTERKEY_CREDHIST));
return credhist;
}
void kull_m_dpapi_masterkeys_credhist_delete(PKULL_M_DPAPI_MASTERKEY_CREDHIST credhist)
{
if(credhist)
LocalFree(credhist);
}
void kull_m_dpapi_masterkeys_credhist_descr(DWORD level, PKULL_M_DPAPI_MASTERKEY_CREDHIST credhist)
{
kprintf(L"%*s" L"**CREDHIST INFO**\n", level << 1, L"");
if(credhist)
{
kprintf(L"%*s" L" dwVersion : %08x - %u\n", level << 1, L"", credhist->dwVersion, credhist->dwVersion);
kprintf(L"%*s" L" guid : ", level << 1, L""); kull_m_string_displayGUID(&credhist->guid); kprintf(L"\n\n");
}
}
PBYTE kull_m_dpapi_masterkeys_credhist_tobin(PKULL_M_DPAPI_MASTERKEY_CREDHIST credhist, OPTIONAL DWORD64 *size)
{
PBYTE data = NULL;
if(data = (PBYTE) LocalAlloc(LPTR, sizeof(KULL_M_DPAPI_MASTERKEY_CREDHIST)))
{
RtlCopyMemory(data, credhist, sizeof(KULL_M_DPAPI_MASTERKEY_CREDHIST));
if(size)
*size = sizeof(KULL_M_DPAPI_MASTERKEY_CREDHIST);
}
return data;
}
PKULL_M_DPAPI_MASTERKEY_DOMAINKEY kull_m_dpapi_masterkeys_domainkey_create(LPCVOID data, DWORD64 size)
{
PKULL_M_DPAPI_MASTERKEY_DOMAINKEY domainkey = NULL;
if(data && (domainkey = (PKULL_M_DPAPI_MASTERKEY_DOMAINKEY) LocalAlloc(LPTR, sizeof(KULL_M_DPAPI_MASTERKEY_DOMAINKEY))))
{
RtlCopyMemory(domainkey, data, FIELD_OFFSET(KULL_M_DPAPI_MASTERKEY_DOMAINKEY, pbSecret));
domainkey->pbSecret = (PBYTE) data + FIELD_OFFSET(KULL_M_DPAPI_MASTERKEY_DOMAINKEY, pbSecret);
domainkey->pbAccesscheck = (PBYTE) data + FIELD_OFFSET(KULL_M_DPAPI_MASTERKEY_DOMAINKEY, pbSecret) + domainkey->dwSecretLen;
kull_m_string_ptr_replace(&domainkey->pbSecret, domainkey->dwSecretLen);
kull_m_string_ptr_replace(&domainkey->pbAccesscheck, domainkey->dwAccesscheckLen);
}
return domainkey;
}
void kull_m_dpapi_masterkeys_domainkey_delete(PKULL_M_DPAPI_MASTERKEY_DOMAINKEY domainkey)
{
if(domainkey)
{
if(domainkey->pbSecret)
LocalFree(domainkey->pbSecret);
if(domainkey->pbAccesscheck)
LocalFree(domainkey->pbAccesscheck);
LocalFree(domainkey);
}
}
void kull_m_dpapi_masterkeys_domainkey_descr(DWORD level, PKULL_M_DPAPI_MASTERKEY_DOMAINKEY domainkey)
{
kprintf(L"%*s" L"**DOMAINKEY**\n", level << 1, L"");
if(domainkey)
{
kprintf(L"%*s" L" dwVersion : %08x - %u\n", level << 1, L"", domainkey->dwVersion, domainkey->dwVersion);
kprintf(L"%*s" L" dwSecretLen : %08x - %u\n", level << 1, L"", domainkey->dwSecretLen, domainkey->dwSecretLen);
kprintf(L"%*s" L" dwAccesscheckLen : %08x - %u\n", level << 1, L"", domainkey->dwAccesscheckLen, domainkey->dwAccesscheckLen);
kprintf(L"%*s" L" guidMasterKey : ", level << 1, L""); kull_m_string_displayGUID(&domainkey->guidMasterKey); kprintf(L"\n");
kprintf(L"%*s" L" pbSecret : ", level << 1, L""); kull_m_string_wprintf_hex(domainkey->pbSecret, domainkey->dwSecretLen, 0); kprintf(L"\n");
kprintf(L"%*s" L" pbAccesscheck : ", level << 1, L""); kull_m_string_wprintf_hex(domainkey->pbAccesscheck, domainkey->dwAccesscheckLen, 0); kprintf(L"\n\n");
}
}
PBYTE kull_m_dpapi_masterkeys_domainkey_tobin(PKULL_M_DPAPI_MASTERKEY_DOMAINKEY domainkey, OPTIONAL DWORD64 *size)
{
PBYTE data = NULL;
if(data = (PBYTE) LocalAlloc(LPTR, FIELD_OFFSET(KULL_M_DPAPI_MASTERKEY_DOMAINKEY, pbSecret) + domainkey->dwSecretLen + domainkey->dwAccesscheckLen))
{
RtlCopyMemory(data, domainkey, FIELD_OFFSET(KULL_M_DPAPI_MASTERKEY_DOMAINKEY, pbSecret));
RtlCopyMemory(data + FIELD_OFFSET(KULL_M_DPAPI_MASTERKEY_DOMAINKEY, pbSecret), domainkey->pbSecret, domainkey->dwSecretLen);
RtlCopyMemory(data + FIELD_OFFSET(KULL_M_DPAPI_MASTERKEY_DOMAINKEY, pbSecret) + domainkey->dwSecretLen, domainkey->pbAccesscheck, domainkey->dwAccesscheckLen);
if(size)
*size = FIELD_OFFSET(KULL_M_DPAPI_MASTERKEY_DOMAINKEY, pbSecret) + domainkey->dwSecretLen + domainkey->dwAccesscheckLen;
}
return data;
}
PKULL_M_DPAPI_MASTERKEYS kull_m_dpapi_masterkeys_create(LPCVOID data/*, DWORD size*/)
{
PKULL_M_DPAPI_MASTERKEYS masterkeys = NULL;
if(data && (masterkeys = (PKULL_M_DPAPI_MASTERKEYS) LocalAlloc(LPTR, sizeof(KULL_M_DPAPI_MASTERKEYS))))
{
RtlCopyMemory(masterkeys, data, FIELD_OFFSET(KULL_M_DPAPI_MASTERKEYS, MasterKey));
if(masterkeys->dwMasterKeyLen)
masterkeys->MasterKey = kull_m_dpapi_masterkey_create((PBYTE) data + FIELD_OFFSET(KULL_M_DPAPI_MASTERKEYS, MasterKey) + 0, masterkeys->dwMasterKeyLen);
if(masterkeys->dwBackupKeyLen)
masterkeys->BackupKey = kull_m_dpapi_masterkey_create((PBYTE) data + FIELD_OFFSET(KULL_M_DPAPI_MASTERKEYS, MasterKey) + masterkeys->dwMasterKeyLen, masterkeys->dwBackupKeyLen);
if(masterkeys->dwCredHistLen)
masterkeys->CredHist = kull_m_dpapi_masterkeys_credhist_create((PBYTE) data + FIELD_OFFSET(KULL_M_DPAPI_MASTERKEYS, MasterKey) + masterkeys->dwMasterKeyLen + masterkeys->dwBackupKeyLen, masterkeys->dwCredHistLen);
if(masterkeys->dwDomainKeyLen)
masterkeys->DomainKey = kull_m_dpapi_masterkeys_domainkey_create((PBYTE) data + FIELD_OFFSET(KULL_M_DPAPI_MASTERKEYS, MasterKey) + masterkeys->dwMasterKeyLen + masterkeys->dwBackupKeyLen + masterkeys->dwCredHistLen, masterkeys->dwDomainKeyLen);
}
return masterkeys;
}
void kull_m_dpapi_masterkeys_delete(PKULL_M_DPAPI_MASTERKEYS masterkeys)
{
if(masterkeys)
{
if(masterkeys->MasterKey)
kull_m_dpapi_masterkey_delete(masterkeys->MasterKey);
if(masterkeys->BackupKey)
kull_m_dpapi_masterkey_delete(masterkeys->BackupKey);
if(masterkeys->CredHist)
kull_m_dpapi_masterkeys_credhist_delete(masterkeys->CredHist);
if(masterkeys->DomainKey)
kull_m_dpapi_masterkeys_domainkey_delete(masterkeys->DomainKey);
LocalFree(masterkeys);
}
}
void kull_m_dpapi_masterkeys_descr(DWORD level, PKULL_M_DPAPI_MASTERKEYS masterkeys)
{
kprintf(L"%*s" L"**MASTERKEYS**\n", level << 1, L"");
if(masterkeys)
{
kprintf(L"%*s" L" dwVersion : %08x - %u\n", level << 1, L"", masterkeys->dwVersion, masterkeys->dwVersion);
kprintf(L"%*s" L" szGuid : {%.36s}\n", level << 1, L"", masterkeys->szGuid);
kprintf(L"%*s" L" dwFlags : %08x - %u\n", level << 1, L"", masterkeys->dwFlags, masterkeys->dwFlags);
kprintf(L"%*s" L" dwMasterKeyLen : %08x - %u\n", level << 1, L"", (DWORD) masterkeys->dwMasterKeyLen, (DWORD) masterkeys->dwMasterKeyLen);
kprintf(L"%*s" L" dwBackupKeyLen : %08x - %u\n", level << 1, L"", (DWORD) masterkeys->dwBackupKeyLen, (DWORD) masterkeys->dwBackupKeyLen);
kprintf(L"%*s" L" dwCredHistLen : %08x - %u\n", level << 1, L"", (DWORD) masterkeys->dwCredHistLen, (DWORD) masterkeys->dwCredHistLen);
kprintf(L"%*s" L" dwDomainKeyLen : %08x - %u\n", level << 1, L"", (DWORD) masterkeys->dwDomainKeyLen, (DWORD) masterkeys->dwDomainKeyLen);
if(masterkeys->MasterKey)
{
kprintf(L"%*s" L"[masterkey]\n", level << 1, L"");
kull_m_dpapi_masterkey_descr(level + 1, masterkeys->MasterKey);
}
if(masterkeys->BackupKey)
{
kprintf(L"%*s" L"[backupkey]\n", level << 1, L"");
kull_m_dpapi_masterkey_descr(level + 1, masterkeys->BackupKey);
}
if(masterkeys->CredHist)
{
kprintf(L"%*s" L"[credhist]\n", level << 1, L"");
kull_m_dpapi_masterkeys_credhist_descr(level + 1, masterkeys->CredHist);
}
if(masterkeys->DomainKey)
{
kprintf(L"%*s" L"[domainkey]\n", level << 1, L"");
kull_m_dpapi_masterkeys_domainkey_descr(level + 1, masterkeys->DomainKey);
}
kprintf(L"\n");
}
}
PBYTE kull_m_dpapi_masterkeys_tobin(PKULL_M_DPAPI_MASTERKEYS masterkeys, OPTIONAL DWORD64 *size)
{
PBYTE data = NULL;
PBYTE MasterKey = NULL, BackupKey = NULL, CredHist = NULL, DomainKey = NULL;
if(masterkeys->MasterKey)
MasterKey = kull_m_dpapi_masterkey_tobin(masterkeys->MasterKey, &masterkeys->dwMasterKeyLen);
if(masterkeys->BackupKey)
BackupKey = kull_m_dpapi_masterkey_tobin(masterkeys->BackupKey, &masterkeys->dwBackupKeyLen);
if(masterkeys->CredHist)
CredHist = kull_m_dpapi_masterkeys_credhist_tobin(masterkeys->CredHist, &masterkeys->dwCredHistLen);
if(masterkeys->DomainKey)
DomainKey = kull_m_dpapi_masterkeys_domainkey_tobin(masterkeys->DomainKey, &masterkeys->dwDomainKeyLen);
if(data = (PBYTE) LocalAlloc(LPTR, FIELD_OFFSET(KULL_M_DPAPI_MASTERKEYS, MasterKey) + (SIZE_T) (masterkeys->dwMasterKeyLen + masterkeys->dwBackupKeyLen + masterkeys->dwCredHistLen + masterkeys->dwDomainKeyLen)))
{
RtlCopyMemory(data, masterkeys, FIELD_OFFSET(KULL_M_DPAPI_MASTERKEYS, MasterKey));
if(MasterKey)
RtlCopyMemory(data + FIELD_OFFSET(KULL_M_DPAPI_MASTERKEYS, MasterKey), MasterKey, (size_t) masterkeys->dwMasterKeyLen);
if(BackupKey)
RtlCopyMemory(data + FIELD_OFFSET(KULL_M_DPAPI_MASTERKEYS, MasterKey) + masterkeys->dwMasterKeyLen, BackupKey, (size_t) masterkeys->dwBackupKeyLen);
if(CredHist)
RtlCopyMemory(data + FIELD_OFFSET(KULL_M_DPAPI_MASTERKEYS, MasterKey) + masterkeys->dwMasterKeyLen + masterkeys->dwBackupKeyLen, CredHist, (size_t) masterkeys->dwCredHistLen);
if(DomainKey)
RtlCopyMemory(data + FIELD_OFFSET(KULL_M_DPAPI_MASTERKEYS, MasterKey) + masterkeys->dwMasterKeyLen + masterkeys->dwBackupKeyLen + masterkeys->dwCredHistLen, DomainKey, (size_t) masterkeys->dwDomainKeyLen);
if(size)
*size = FIELD_OFFSET(KULL_M_DPAPI_MASTERKEYS, MasterKey) + masterkeys->dwMasterKeyLen + masterkeys->dwBackupKeyLen + masterkeys->dwCredHistLen + masterkeys->dwDomainKeyLen;
}
return data;
}
PKULL_M_DPAPI_CREDHIST kull_m_dpapi_credhist_create(LPCVOID data, DWORD size)
{
PKULL_M_DPAPI_CREDHIST credhist = NULL;
DWORD currSize, sumSize, i;
if(data && (credhist = (PKULL_M_DPAPI_CREDHIST) LocalAlloc(LPTR, sizeof(KULL_M_DPAPI_CREDHIST))))
{
RtlCopyMemory(credhist, (PBYTE) data + size - sizeof(KULL_M_DPAPI_CREDHIST_HEADER), sizeof(KULL_M_DPAPI_CREDHIST_HEADER));
for(
sumSize = sizeof(KULL_M_DPAPI_CREDHIST_HEADER), currSize = credhist->current.dwNextLen;
(sumSize < size) && currSize;
currSize = ((PKULL_M_DPAPI_CREDHIST_ENTRY) ((PBYTE) data + size - (sumSize + currSize)))->header.dwNextLen, sumSize += currSize, credhist->__dwCount++
);
if(credhist->entries = (PKULL_M_DPAPI_CREDHIST_ENTRY *) LocalAlloc(LPTR, credhist->__dwCount * sizeof(PKULL_M_DPAPI_CREDHIST_ENTRY)))
for(
i = 0, sumSize = sizeof(KULL_M_DPAPI_CREDHIST_HEADER), currSize = credhist->current.dwNextLen;
(sumSize < size) && currSize;
currSize = ((PKULL_M_DPAPI_CREDHIST_ENTRY) ((PBYTE) data + size - (sumSize + currSize)))->header.dwNextLen, sumSize += currSize, i++
)
credhist->entries[i] = kull_m_dpapi_credhist_entry_create(((PBYTE) data + size - (sumSize + currSize)), currSize);
}
return credhist;
}
void kull_m_dpapi_credhist_delete(PKULL_M_DPAPI_CREDHIST credhist)
{
DWORD i;
if(credhist)
{
for(i = 0; i < credhist->__dwCount; i++)
kull_m_dpapi_credhist_entry_delete(credhist->entries[i]);
LocalFree(credhist);
}
}
void kull_m_dpapi_credhist_descr(DWORD level, PKULL_M_DPAPI_CREDHIST credhist)
{
DWORD i;
kprintf(L"%*s" L"**CREDHIST**\n", level << 1, L"");
if(credhist)
{
kprintf(L"%*s" L" dwVersion : %08x - %u\n", level << 1, L"", credhist->current.dwVersion, credhist->current.dwVersion);
kprintf(L"%*s" L" guid : ", level << 1, L""); kull_m_string_displayGUID(&credhist->current.guid); kprintf(L"\n");
kprintf(L"%*s" L" dwNextLen : %08x - %u\n", level << 1, L"", credhist->current.dwNextLen, credhist->current.dwNextLen);
for(i = 0; i < credhist->__dwCount; i++)
kull_m_dpapi_credhist_entry_descr(level + 1, credhist->entries[i]);
kprintf(L"\n");
}
}
PKULL_M_DPAPI_CREDHIST_ENTRY kull_m_dpapi_credhist_entry_create(LPCVOID data, DWORD size)
{
PKULL_M_DPAPI_CREDHIST_ENTRY entry = NULL;
if(data && (entry = (PKULL_M_DPAPI_CREDHIST_ENTRY) LocalAlloc(LPTR, sizeof(KULL_M_DPAPI_CREDHIST_ENTRY))))
{
RtlCopyMemory(entry, data, FIELD_OFFSET(KULL_M_DPAPI_CREDHIST_ENTRY, pSid));
entry->pSid = (PBYTE) data + FIELD_OFFSET(KULL_M_DPAPI_CREDHIST_ENTRY, pSid);
entry->pSecret = (PBYTE) entry->pSid + entry->sidLen;
entry->__dwSecretLen = size - (FIELD_OFFSET(KULL_M_DPAPI_CREDHIST_ENTRY, pSid) + entry->sidLen);
kull_m_string_ptr_replace(&entry->pSid, entry->sidLen);
kull_m_string_ptr_replace(&entry->pSecret, entry->__dwSecretLen);
}
return entry;
}
void kull_m_dpapi_credhist_entry_delete(PKULL_M_DPAPI_CREDHIST_ENTRY entry)
{
if(entry)
{
if(entry->pSid)
LocalFree(entry->pSid);
if(entry->pSecret)
LocalFree(entry->pSecret);
LocalFree(entry);
}
}
void kull_m_dpapi_credhist_entry_descr(DWORD level, PKULL_M_DPAPI_CREDHIST_ENTRY entry)
{
kprintf(L"%*s" L"**CREDHIST ENTRY**\n", level << 1, L"");
if(entry)
{
kprintf(L"%*s" L" dwVersion : %08x - %u\n", level << 1, L"", entry->header.dwVersion, entry->header.dwVersion);
kprintf(L"%*s" L" guid : ", level << 1, L""); kull_m_string_displayGUID(&entry->header.guid); kprintf(L"\n");
kprintf(L"%*s" L" dwNextLen : %08x - %u\n", level << 1, L"", entry->header.dwNextLen, entry->header.dwNextLen);
kprintf(L"%*s" L" dwType : %08x - %u\n", level << 1, L"", entry->dwType, entry->dwType);
kprintf(L"%*s" L" algHash : %08x - %u (%s)\n", level << 1, L"", entry->algHash, entry->algHash, kull_m_crypto_algid_to_name(entry->algHash));
kprintf(L"%*s" L" rounds : %08x - %u\n", level << 1, L"", entry->rounds, entry->rounds);
kprintf(L"%*s" L" sidLen : %08x - %u\n", level << 1, L"", entry->sidLen, entry->sidLen);
kprintf(L"%*s" L" algCrypt : %08x - %u (%s)\n", level << 1, L"", entry->algCrypt, entry->algCrypt, kull_m_crypto_algid_to_name(entry->algCrypt));
kprintf(L"%*s" L" sha1Len : %08x - %u\n", level << 1, L"", entry->sha1Len, entry->sha1Len);
kprintf(L"%*s" L" md4Len : %08x - %u\n", level << 1, L"", entry->md4Len, entry->md4Len);
kprintf(L"%*s" L" Salt : ", level << 1, L""); kull_m_string_wprintf_hex(entry->salt, sizeof(entry->salt), 0); kprintf(L"\n");
kprintf(L"%*s" L" Sid : ", level << 1, L""); kull_m_string_displaySID(entry->pSid); kprintf(L"\n");
kprintf(L"%*s" L" pSecret : ", level << 1, L""); kull_m_string_wprintf_hex(entry->pSecret, entry->__dwSecretLen, 0); kprintf(L"\n\n");
}
}
BOOL kull_m_dpapi_hmac_sha1_incorrect(LPCVOID key, DWORD keyLen, LPCVOID salt, DWORD saltLen, LPCVOID entropy, DWORD entropyLen, LPCVOID data, DWORD dataLen, LPVOID outKey)
{
BOOL status = FALSE;
BYTE ipad[64], opad[64], hash[SHA_DIGEST_LENGTH], *bufferI, *bufferO;
DWORD i;
RtlFillMemory(ipad, sizeof(ipad), '6');
RtlFillMemory(opad, sizeof(opad), '\\');
for(i = 0; i < keyLen; i++)
{
ipad[i] ^= ((PBYTE) key)[i];
opad[i] ^= ((PBYTE) key)[i];
}
if(bufferI = (PBYTE) LocalAlloc(LPTR, sizeof(ipad) + saltLen))
{
RtlCopyMemory(bufferI, ipad, sizeof(ipad));
RtlCopyMemory(bufferI + sizeof(ipad), salt, saltLen);
if(kull_m_crypto_hash(CALG_SHA1, bufferI, sizeof(ipad) + saltLen, hash, SHA_DIGEST_LENGTH))
{
if(bufferO = (PBYTE) LocalAlloc(LPTR, sizeof(opad) + SHA_DIGEST_LENGTH + entropyLen + dataLen))
{
RtlCopyMemory(bufferO, opad, sizeof(opad));
RtlCopyMemory(bufferO + sizeof(opad), hash, SHA_DIGEST_LENGTH);
if(entropy && entropyLen)
RtlCopyMemory(bufferO + sizeof(opad) + SHA_DIGEST_LENGTH, entropy, entropyLen);
if(data && dataLen)
RtlCopyMemory(bufferO + sizeof(opad) + SHA_DIGEST_LENGTH + entropyLen, data, dataLen);
status = kull_m_crypto_hash(CALG_SHA1, bufferO, sizeof(opad) + SHA_DIGEST_LENGTH + entropyLen + dataLen, outKey, SHA_DIGEST_LENGTH);
LocalFree(bufferO);
}
}
LocalFree(bufferI);
}
return status;
}
BOOL kull_m_dpapi_sessionkey(LPCVOID masterkey, DWORD masterkeyLen, LPCVOID salt, DWORD saltLen, LPCVOID entropy, DWORD entropyLen, LPCVOID data, DWORD dataLen, ALG_ID hashAlg, LPVOID outKey, DWORD outKeyLen)
{
BOOL status = FALSE;
LPCVOID pKey = NULL;
BYTE dgstMasterKey[SHA_DIGEST_LENGTH];
PBYTE tmp;
if(masterkeyLen == SHA_DIGEST_LENGTH)
pKey = masterkey;
else if(kull_m_crypto_hash(CALG_SHA1, masterkey, masterkeyLen, dgstMasterKey, SHA_DIGEST_LENGTH))
pKey = dgstMasterKey;
if(pKey)
{
if((hashAlg == CALG_SHA1) && (entropy || data))
status = kull_m_dpapi_hmac_sha1_incorrect(masterkey, masterkeyLen, salt, saltLen, entropy, entropyLen, data, dataLen, outKey);
else if(tmp = (PBYTE) LocalAlloc(LPTR, saltLen + entropyLen + dataLen))
{
RtlCopyMemory(tmp, salt, saltLen);
if(entropy && entropyLen)
RtlCopyMemory(tmp + saltLen, entropy, entropyLen);
if(data && dataLen)
RtlCopyMemory(tmp + saltLen + entropyLen, data, dataLen);
status = kull_m_crypto_hmac(hashAlg, pKey, SHA_DIGEST_LENGTH, tmp, saltLen + entropyLen + dataLen, outKey, outKeyLen);
LocalFree(tmp);
}
}
return status;
}
BOOL kull_m_dpapi_unprotect_blob(PKULL_M_DPAPI_BLOB blob, LPCVOID masterkey, DWORD masterkeyLen, LPCVOID entropy, DWORD entropyLen, LPCWSTR password, LPVOID *dataOut, DWORD *dataOutLen)
{
BOOL status = FALSE, iStatus = !password;
PVOID hmac, key, hashPassword = NULL;
HCRYPTPROV hSessionProv;
HCRYPTKEY hSessionKey;
DWORD hashLen = blob->dwAlgHashLen / 8, cryptLen = blob->dwAlgCryptLen / 8, hashPasswordLen;
ALG_ID passwordHash;
if((blob->algCrypt == CALG_3DES) && (cryptLen < (192 / 8)))
cryptLen = 192 / 8;
if(!iStatus)
{
if(blob->algHash == CALG_SHA_512)
{
passwordHash = CALG_SHA_512;
hashPasswordLen = hashLen;
}
else
{
passwordHash = CALG_SHA1;
hashPasswordLen = SHA_DIGEST_LENGTH;
}
if(hashPassword = LocalAlloc(LPTR, hashPasswordLen))
iStatus = kull_m_crypto_hash(passwordHash, password, (DWORD) (wcslen(password) * sizeof(wchar_t)), hashPassword, hashPasswordLen);
}
if(iStatus)
{
if(hmac = LocalAlloc(LPTR, hashLen))
{
if(kull_m_dpapi_sessionkey(masterkey, masterkeyLen, blob->pbSalt, blob->dwSaltLen, entropy, entropyLen, hashPassword, hashPassword ? hashPasswordLen : 0, blob->algHash, hmac, hashLen))
{
if(key = LocalAlloc(LPTR, cryptLen))
{
if(kull_m_crypto_DeriveKeyRaw(blob->algHash, hmac, hashLen, key, cryptLen))
{
if(kull_m_crypto_hkey_session(blob->algCrypt, key, cryptLen, 0, &hSessionKey, &hSessionProv))
{
if(*dataOut = LocalAlloc(LPTR, blob->dwDataLen))
{
RtlCopyMemory(*dataOut, blob->pbData, blob->dwDataLen);
*dataOutLen = blob->dwDataLen;
status = CryptDecrypt(hSessionKey, 0, TRUE, 0, (LPBYTE) *dataOut, dataOutLen);
if(!status)
{
*dataOut = LocalFree(*dataOut);
PRINT_ERROR_AUTO(L"CryptDecrypt");
}
}
CryptDestroyKey(hSessionKey);
if(!kull_m_crypto_close_hprov_delete_container(hSessionProv))
PRINT_ERROR_AUTO(L"kull_m_crypto_close_hprov_delete_container");
}
else PRINT_ERROR_AUTO(L"kull_m_crypto_hkey_session");
}
LocalFree(key);
}
}
LocalFree(hmac);
}
}
if(hashPassword)
LocalFree(hashPassword);
return status;
}
BOOL kull_m_dpapi_unprotect_raw_or_blob(LPCVOID pDataIn, DWORD dwDataInLen, LPWSTR *ppszDataDescr, LPCVOID pOptionalEntropy, DWORD dwOptionalEntropyLen, CRYPTPROTECT_PROMPTSTRUCT* pPromptStruct, DWORD dwFlags, LPVOID *pDataOut, DWORD *dwDataOutLen, LPCVOID pMasterKey, DWORD dwMasterKeyLen, LPCWSTR pPassword)
{
BOOL status = FALSE;
DATA_BLOB dataIn = {dwDataInLen, (PBYTE) pDataIn}, dataEntropy = {dwOptionalEntropyLen, (PBYTE) pOptionalEntropy}, dataOut;
PKULL_M_DPAPI_BLOB blob;
if(pMasterKey && dwMasterKeyLen)
{
if(blob = kull_m_dpapi_blob_create(pDataIn))
{
if(status = kull_m_dpapi_unprotect_blob(blob, pMasterKey, dwMasterKeyLen, pOptionalEntropy, dwOptionalEntropyLen, pPassword, pDataOut, dwDataOutLen))
if(ppszDataDescr && blob->szDescription && blob->dwDescriptionLen)
if(*ppszDataDescr = (LPWSTR) LocalAlloc(LPTR, blob->dwDescriptionLen))
RtlCopyMemory(*ppszDataDescr, blob->szDescription, blob->dwDescriptionLen);
kull_m_dpapi_blob_delete(blob);
}
}
else
{
if(status = CryptUnprotectData(&dataIn, ppszDataDescr, &dataEntropy, NULL, pPromptStruct, dwFlags, &dataOut))
{
*dwDataOutLen = dataOut.cbData;
if(*pDataOut = LocalAlloc(LPTR, *dwDataOutLen))
RtlCopyMemory(*pDataOut, dataOut.pbData, *dwDataOutLen);
LocalFree(dataOut.pbData);
}
}
return status;
}
BOOL kull_m_dpapi_getProtected(PVOID PassHash, DWORD PassLen, PCWSTR sid)
{
BOOL status = FALSE;
DWORD SidLen = lstrlen(sid) * sizeof(wchar_t);
BYTE sha2[32];
if(kull_m_crypto_pkcs5_pbkdf2_hmac(CALG_SHA_256, PassHash, PassLen, sid, SidLen, 10000, sha2, sizeof(sha2), FALSE))
status = kull_m_crypto_pkcs5_pbkdf2_hmac(CALG_SHA_256, sha2, sizeof(sha2), sid, SidLen, 1, (PBYTE) PassHash, PassLen, FALSE);
return status;
}
BOOL kull_m_dpapi_unprotect_masterkey_with_password(DWORD flags, PKULL_M_DPAPI_MASTERKEY masterkey, PCWSTR password, PCWSTR sid, BOOL isKeyOfProtectedUser, PVOID *output, DWORD *outputLen)
{
BOOL status = FALSE;
ALG_ID PassAlg;
DWORD PassLen, SidLen = (DWORD) wcslen(sid) * sizeof(wchar_t);
PVOID PassHash;
PassAlg = (flags & 4) ? CALG_SHA1 : CALG_MD4;
PassLen = kull_m_crypto_hash_len(PassAlg);
if(PassHash = LocalAlloc(LPTR, PassLen))
{
if(kull_m_crypto_hash(PassAlg, password, (DWORD) wcslen(password) * sizeof(wchar_t), PassHash, PassLen))
status = kull_m_dpapi_unprotect_masterkey_with_userHash(masterkey, PassHash, PassLen, sid, isKeyOfProtectedUser, output, outputLen);
LocalFree(PassHash);
}
return status;
}
BOOL kull_m_dpapi_unprotect_masterkey_with_userHash(PKULL_M_DPAPI_MASTERKEY masterkey, LPCVOID userHash, DWORD userHashLen, PCWSTR sid, BOOL isKeyOfProtectedUser, PVOID *output, DWORD *outputLen)
{
BYTE sha1DerivedKey[SHA_DIGEST_LENGTH], ntlmofprotected[LM_NTLM_HASH_LENGTH];
BOOL status = FALSE, isNTLMofProtected = isKeyOfProtectedUser && sid && (userHashLen == sizeof(ntlmofprotected));
LPCVOID hash;
DWORD hashLen;
if(!isNTLMofProtected)
{
hash = userHash;
hashLen = userHashLen;
}
else
{
RtlCopyMemory(ntlmofprotected, userHash, sizeof(ntlmofprotected));
kull_m_dpapi_getProtected(ntlmofprotected, sizeof(ntlmofprotected), sid);
hash = ntlmofprotected;
hashLen = sizeof(ntlmofprotected);
}
if(sid)
status = kull_m_crypto_hmac(CALG_SHA1, hash, hashLen, sid, (lstrlen(sid) + 1) * sizeof(wchar_t), sha1DerivedKey, SHA_DIGEST_LENGTH);
else RtlCopyMemory(sha1DerivedKey, hash, min(sizeof(sha1DerivedKey), hashLen));
if(!sid || status)
status = kull_m_dpapi_unprotect_masterkey_with_shaDerivedkey(masterkey, sha1DerivedKey, SHA_DIGEST_LENGTH, output, outputLen);
return status;
}
BOOL kull_m_dpapi_unprotect_masterkey_with_shaDerivedkey(PKULL_M_DPAPI_MASTERKEY masterkey, LPCVOID shaDerivedkey, DWORD shaDerivedkeyLen, PVOID *output, DWORD *outputLen)
{
BOOL status = FALSE;
HCRYPTPROV hSessionProv;
HCRYPTKEY hSessionKey;
ALG_ID HMACAlg;
DWORD HMACLen, BlockLen, KeyLen, OutLen;
PVOID HMACHash, CryptBuffer, hmac1, hmac2;
HMACAlg = (masterkey->algHash == CALG_HMAC) ? CALG_SHA1 : masterkey->algHash;
HMACLen = kull_m_crypto_hash_len(HMACAlg);
KeyLen = kull_m_crypto_cipher_keylen(masterkey->algCrypt);
BlockLen = kull_m_crypto_cipher_blocklen(masterkey->algCrypt);
if(HMACHash = LocalAlloc(LPTR, KeyLen + BlockLen))
{
if(kull_m_crypto_pkcs5_pbkdf2_hmac(HMACAlg, shaDerivedkey, shaDerivedkeyLen, masterkey->salt, sizeof(masterkey->salt), masterkey->rounds, (PBYTE) HMACHash, KeyLen + BlockLen, TRUE))
{
if(kull_m_crypto_hkey_session(masterkey->algCrypt, HMACHash, KeyLen, 0, &hSessionKey, &hSessionProv))
{
if(CryptSetKeyParam(hSessionKey, KP_IV, (PBYTE) HMACHash + KeyLen, 0))
{
OutLen = masterkey->__dwKeyLen;
if(CryptBuffer = LocalAlloc(LPTR, OutLen))
{
RtlCopyMemory(CryptBuffer, masterkey->pbKey, OutLen);
if(CryptDecrypt(hSessionKey, 0, FALSE, 0, (PBYTE) CryptBuffer, &OutLen))
{
*outputLen = OutLen - 16 - HMACLen - ((masterkey->algCrypt == CALG_3DES) ? 4 : 0); // reversed -- see with blocklen like in protect
if(hmac1 = LocalAlloc(LPTR, HMACLen))
{
if(kull_m_crypto_hmac(HMACAlg, shaDerivedkey, shaDerivedkeyLen, CryptBuffer, 16, hmac1, HMACLen))
{
if(hmac2 = LocalAlloc(LPTR, HMACLen))
{
if(kull_m_crypto_hmac(HMACAlg, hmac1, HMACLen, (PBYTE) CryptBuffer + OutLen - *outputLen, *outputLen, hmac2, HMACLen))
{
if(status = RtlEqualMemory(hmac2, (PBYTE) CryptBuffer + 16, HMACLen))
{
if(*output = LocalAlloc(LPTR, *outputLen))
RtlCopyMemory(*output, (PBYTE) CryptBuffer + OutLen - *outputLen, *outputLen);
}
}
LocalFree(hmac2);
}
}
LocalFree(hmac1);
}
}
LocalFree(CryptBuffer);
}
}
CryptDestroyKey(hSessionKey);
if(!kull_m_crypto_close_hprov_delete_container(hSessionProv))
PRINT_ERROR_AUTO(L"kull_m_crypto_close_hprov_delete_container");
}
else PRINT_ERROR_AUTO(L"kull_m_crypto_hkey_session");
}
LocalFree(HMACHash);
}
return status;
}
BOOL kull_m_dpapi_protect_masterkey_with_password(DWORD flags, PKULL_M_DPAPI_MASTERKEY masterkey, PCWSTR password, PCWSTR sid, BOOL isKeyOfProtectedUser, LPCVOID pbKey, DWORD dwKey, OPTIONAL LPCVOID pbInternalSalt)
{
BOOL status = FALSE;
ALG_ID PassAlg;
DWORD PassLen, SidLen = (DWORD) wcslen(sid) * sizeof(wchar_t);
PVOID PassHash;
PassAlg = (flags & 4) ? CALG_SHA1 : CALG_MD4;
PassLen = kull_m_crypto_hash_len(PassAlg);
if(PassHash = LocalAlloc(LPTR, PassLen))
{
if(kull_m_crypto_hash(PassAlg, password, (DWORD) wcslen(password) * sizeof(wchar_t), PassHash, PassLen))
status = kull_m_dpapi_protect_masterkey_with_userHash(masterkey, PassHash, PassLen, sid, isKeyOfProtectedUser, pbKey, dwKey, pbInternalSalt);
LocalFree(PassHash);
}
return status;
}
BOOL kull_m_dpapi_protect_masterkey_with_userHash(PKULL_M_DPAPI_MASTERKEY masterkey, LPCVOID userHash, DWORD userHashLen, PCWSTR sid, BOOL isKeyOfProtectedUser, LPCVOID pbKey, DWORD dwKey, OPTIONAL LPCVOID pbInternalSalt)
{
BYTE sha1DerivedKey[SHA_DIGEST_LENGTH], ntlmofprotected[LM_NTLM_HASH_LENGTH];
BOOL status = FALSE, isNTLMofProtected = isKeyOfProtectedUser && sid && (userHashLen == sizeof(ntlmofprotected));
LPCVOID hash;
DWORD hashLen;
if(!isNTLMofProtected)
{
hash = userHash;
hashLen = userHashLen;
}
else
{
RtlCopyMemory(ntlmofprotected, userHash, sizeof(ntlmofprotected));
kull_m_dpapi_getProtected(ntlmofprotected, sizeof(ntlmofprotected), sid);
hash = ntlmofprotected;
hashLen = sizeof(ntlmofprotected);
}
if(sid)
status = kull_m_crypto_hmac(CALG_SHA1, hash, hashLen, sid, (lstrlen(sid) + 1) * sizeof(wchar_t), sha1DerivedKey, SHA_DIGEST_LENGTH);
else RtlCopyMemory(sha1DerivedKey, hash, min(sizeof(sha1DerivedKey), hashLen));
if(!sid || status)
status = kull_m_dpapi_protect_masterkey_with_shaDerivedkey(masterkey, sha1DerivedKey, SHA_DIGEST_LENGTH, pbKey, dwKey, pbInternalSalt);
return status;
}
BOOL kull_m_dpapi_protect_masterkey_with_shaDerivedkey(PKULL_M_DPAPI_MASTERKEY masterkey, LPCVOID shaDerivedkey, DWORD shaDerivedkeyLen, LPCVOID pbKey, DWORD dwKey, OPTIONAL LPCVOID pbInternalSalt)
{
BOOL status = FALSE;
HCRYPTPROV hSessionProv;
HCRYPTKEY hSessionKey;
ALG_ID HMACAlg;
DWORD HMACLen, BlockLen, KeyLen;
PVOID HMACHash;
HMACAlg = (masterkey->algHash == CALG_HMAC) ? CALG_SHA1 : masterkey->algHash;
HMACLen = kull_m_crypto_hash_len(HMACAlg);
KeyLen = kull_m_crypto_cipher_keylen(masterkey->algCrypt);
BlockLen = kull_m_crypto_cipher_blocklen(masterkey->algCrypt);
HMACLen += HMACLen % BlockLen; // will be truncated in kull_m_crypto_hmac
masterkey->__dwKeyLen = 16 + HMACLen + dwKey;
if(masterkey->pbKey = (PBYTE) LocalAlloc(LPTR, masterkey->__dwKeyLen + BlockLen))
{
if(pbInternalSalt)
RtlCopyMemory(masterkey->pbKey, pbInternalSalt, 16);
else CDGenerateRandomBits(masterkey->pbKey, 16);
if(kull_m_crypto_hmac(HMACAlg, shaDerivedkey, shaDerivedkeyLen, masterkey->pbKey, 16, masterkey->pbKey + 16, HMACLen)) // tmp usage of hmac2 for hmac1
{
if(kull_m_crypto_hmac(HMACAlg, masterkey->pbKey + 16, HMACLen, pbKey, dwKey, masterkey->pbKey + 16, HMACLen))
{
RtlCopyMemory(masterkey->pbKey + 16 + HMACLen, pbKey, dwKey);
if(HMACHash = LocalAlloc(LPTR, KeyLen + BlockLen))
{
if(kull_m_crypto_pkcs5_pbkdf2_hmac(HMACAlg, shaDerivedkey, shaDerivedkeyLen, masterkey->salt, sizeof(masterkey->salt), masterkey->rounds, (PBYTE) HMACHash, KeyLen + BlockLen, TRUE))
{
if(kull_m_crypto_hkey_session(masterkey->algCrypt, HMACHash, KeyLen, 0, &hSessionKey, &hSessionProv))
{
if(CryptSetKeyParam(hSessionKey, KP_IV, (PBYTE) HMACHash + KeyLen, 0))
{
if(status = CryptEncrypt(hSessionKey, 0, TRUE, 0, masterkey->pbKey, &masterkey->__dwKeyLen, masterkey->__dwKeyLen + BlockLen))
masterkey->__dwKeyLen -= BlockLen;
else PRINT_ERROR_AUTO(L"CryptEncrypt");
}
CryptDestroyKey(hSessionKey);
if(!kull_m_crypto_close_hprov_delete_container(hSessionProv))
PRINT_ERROR_AUTO(L"kull_m_crypto_close_hprov_delete_container");
}
else PRINT_ERROR_AUTO(L"kull_m_crypto_hkey_session");
}
LocalFree(HMACHash);
}
}
}
if(!status)
{
masterkey->pbKey = (PBYTE) LocalFree(masterkey->pbKey);
masterkey->__dwKeyLen = 0;
}
}
return status;
}
BOOL kull_m_dpapi_unprotect_backupkey_with_secret(DWORD flags, PKULL_M_DPAPI_MASTERKEY masterkey, PCWSTR sid, LPCVOID secret, DWORD secretLen, PVOID *output, DWORD *outputLen)
{
BOOL status = FALSE, isDPAPISecret = flags & 1;
LPCBYTE ptrSecret = (LPCBYTE) secret;
PVOID data, hash;
ALG_ID algID = (masterkey->algHash == CALG_SHA_512) ? CALG_SHA_512 : CALG_SHA1;
DWORD sidLen = (DWORD) (wcslen(sid) + 1) * sizeof(wchar_t), hashSize = kull_m_crypto_hash_len(algID), dataSize = sidLen;
if(!isDPAPISecret || (isDPAPISecret && ptrSecret && secretLen))
{
if(secretLen == 2 * SHA_DIGEST_LENGTH + sizeof(DWORD))
{
ptrSecret += sizeof(DWORD);
secretLen -= sizeof(DWORD);
}
if(isDPAPISecret)
dataSize += secretLen;
if(data = (PBYTE) LocalAlloc(LPTR, dataSize))
{
RtlCopyMemory(data, sid, sidLen);
if(isDPAPISecret)
RtlCopyMemory((PBYTE) data + sidLen, ptrSecret, secretLen);
if(hash = LocalAlloc(LPTR, hashSize))
{
if(kull_m_crypto_hash(algID, data, dataSize, hash, hashSize))
status = kull_m_dpapi_unprotect_masterkey_with_shaDerivedkey(masterkey, hash, hashSize, output, outputLen);
LocalFree(hash);
}
LocalFree(data);
}
}
else PRINT_ERROR(L"This backup key need DPAPI_SYSTEM secret\n");
return status;
}
BOOL kull_m_dpapi_unprotect_domainkey_with_key(PKULL_M_DPAPI_MASTERKEY_DOMAINKEY domainkey, LPCVOID key, DWORD keyLen, PVOID *output, DWORD *outputLen, PSID *sid)
{
BOOL status = FALSE;
HCRYPTPROV hProv, hSessionProv;
HCRYPTKEY hKey, hSessionKey;
PKULL_M_DPAPI_DOMAIN_RSA_MASTER_KEY rsa_buffer;
PKULL_M_DPAPI_DOMAIN_ACCESS_CHECK des_buffer;
BYTE digest[SHA_DIGEST_LENGTH];
DWORD cbOutput;
PSID pSid;
if(CryptAcquireContext(&hProv, NULL, NULL, PROV_RSA_AES, CRYPT_VERIFYCONTEXT))
{
if(CryptImportKey(hProv, (PBYTE) key, keyLen, 0, 0, &hKey))
{
cbOutput = domainkey->dwSecretLen;
if(rsa_buffer = (PKULL_M_DPAPI_DOMAIN_RSA_MASTER_KEY) LocalAlloc(LPTR, cbOutput))
{
RtlCopyMemory(rsa_buffer, domainkey->pbSecret, cbOutput);
if(CryptDecrypt(hKey, 0, TRUE, 0, (PBYTE) rsa_buffer, &cbOutput))
{
kprintf(L"\nRSA decrypt is a success\n");
kprintf(L" * MasterKey len: %u\n", rsa_buffer->cbMasterKey);
kull_m_string_wprintf_hex(rsa_buffer->buffer, rsa_buffer->cbMasterKey, 1 | (16 << 16));
kprintf(L" * SuppKey len: %u\n", rsa_buffer->cbSuppKey);
kull_m_string_wprintf_hex(rsa_buffer->buffer + rsa_buffer->cbMasterKey, rsa_buffer->cbSuppKey, 1 | (16 << 16));
if(kull_m_crypto_hkey(hProv, CALG_3DES, rsa_buffer->buffer + rsa_buffer->cbMasterKey, 192 / 8, 0, &hSessionKey, &hSessionProv))
{
if(CryptSetKeyParam(hSessionKey, KP_IV, rsa_buffer->buffer + rsa_buffer->cbMasterKey + 192 / 8, 0))
{
cbOutput = domainkey->dwAccesscheckLen;
if(des_buffer = (PKULL_M_DPAPI_DOMAIN_ACCESS_CHECK) LocalAlloc(LPTR, cbOutput))
{
RtlCopyMemory(des_buffer, domainkey->pbAccesscheck, cbOutput);
if(CryptDecrypt(hSessionKey, 0, FALSE, 0, (PBYTE) des_buffer, &cbOutput))
{
pSid = (PSID) (des_buffer->data + des_buffer->dataLen);
kprintf(L"\n3DES decrypt is a success too\n");
kull_m_string_wprintf_hex(des_buffer, cbOutput, 1 | (16 << 16)); kprintf(L"\n");
kprintf(L" * nonce : "); kull_m_string_wprintf_hex(des_buffer->data, des_buffer->dataLen, 0); kprintf(L"\n"); // try to leave it as is =)
kprintf(L" * SID : "); kull_m_string_displaySID(pSid); kprintf(L"\n");
kprintf(L" * SHA1 : "); kull_m_string_wprintf_hex((PBYTE) des_buffer + cbOutput - SHA_DIGEST_LENGTH, SHA_DIGEST_LENGTH, 0); kprintf(L"\n");
if(kull_m_crypto_hash(CALG_SHA1, des_buffer, cbOutput - SHA_DIGEST_LENGTH, digest, SHA_DIGEST_LENGTH))
{
kprintf(L" > Calc SHA1: "); kull_m_string_wprintf_hex(digest, SHA_DIGEST_LENGTH, 0); kprintf(L"\n");
if(RtlEqualMemory((PBYTE) des_buffer + cbOutput - SHA_DIGEST_LENGTH, digest, SHA_DIGEST_LENGTH))
{
*outputLen = rsa_buffer->cbMasterKey;
if(*output = LocalAlloc(LPTR, *outputLen))
{
RtlCopyMemory(*output, rsa_buffer->buffer, *outputLen);
status = TRUE;
*sid = NULL;
if(sid)
{
status = FALSE;
cbOutput = GetLengthSid(pSid);
if(*sid = (PSID) LocalAlloc(LPTR, cbOutput))
status = CopySid(cbOutput, *sid, pSid);
}
if(!status)
{
if(*output)
*output = LocalFree(*output);
if(*sid)
*sid = LocalFree(*sid);
*outputLen = 0;
}
}
}
}
}
else PRINT_ERROR_AUTO(L"CryptDecrypt");
LocalFree(des_buffer);
}
}
else PRINT_ERROR_AUTO(L"CryptSetKeyParam");
CryptDestroyKey(hSessionKey);
if(!kull_m_crypto_close_hprov_delete_container(hSessionProv))
PRINT_ERROR_AUTO(L"kull_m_crypto_close_hprov_delete_container");
}
}
else PRINT_ERROR_AUTO(L"CryptDecrypt");
LocalFree(rsa_buffer);
}
CryptDestroyKey(hKey);
}
CryptReleaseContext(hProv, 0);
}
return status;
}
BOOL kull_m_dpapi_unprotect_domainkey_with_rpc(PKULL_M_DPAPI_MASTERKEYS masterkeys, PVOID rawMasterkeys, LPCWSTR server, PVOID *output, DWORD *outputLen)
{
BOOL status = FALSE;
PBYTE out;
DWORD dwOut;
*output = NULL;
*outputLen = 0;
if(status = kull_m_rpc_bkrp_Restore(server, (PBYTE) rawMasterkeys + FIELD_OFFSET(KULL_M_DPAPI_MASTERKEYS, MasterKey) + masterkeys->dwMasterKeyLen + masterkeys->dwBackupKeyLen + masterkeys->dwCredHistLen, (DWORD) masterkeys->dwDomainKeyLen, (PVOID *) &out, &dwOut))
{
*outputLen = dwOut - sizeof(DWORD);
if(*output = LocalAlloc(LPTR, *outputLen))
RtlCopyMemory(*output, out + sizeof(DWORD), dwOut - sizeof(DWORD));
LocalFree(out);
}
return status;
}
BOOL kull_m_dpapi_unprotect_credhist_entry_with_shaDerivedkey(PKULL_M_DPAPI_CREDHIST_ENTRY entry, LPCVOID shaDerivedkey, DWORD shaDerivedkeyLen, PVOID md4hash, PVOID sha1hash)
{
BOOL status = FALSE;
HCRYPTPROV hSessionProv;
HCRYPTKEY hSessionKey;
ALG_ID HMACAlg;
DWORD HMACLen, BlockLen, KeyLen, OutLen;
PVOID HMACHash, CryptBuffer;
DWORD i;
HMACAlg = (entry->algHash == CALG_HMAC) ? CALG_SHA1 : entry->algHash;
HMACLen = kull_m_crypto_hash_len(HMACAlg);
KeyLen = kull_m_crypto_cipher_keylen(entry->algCrypt);
BlockLen = kull_m_crypto_cipher_blocklen(entry->algCrypt);
if(HMACHash = LocalAlloc(LPTR, KeyLen + BlockLen))
{
if(kull_m_crypto_pkcs5_pbkdf2_hmac(HMACAlg, shaDerivedkey, shaDerivedkeyLen, entry->salt, sizeof(entry->salt), entry->rounds, (PBYTE) HMACHash, KeyLen + BlockLen, TRUE))
{
if(kull_m_crypto_hkey_session(entry->algCrypt, HMACHash, KeyLen, 0, &hSessionKey, &hSessionProv))
{
if(CryptSetKeyParam(hSessionKey, KP_IV, (PBYTE) HMACHash + KeyLen, 0))
{