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/*
* Skype Login
*
* Based on:
* FakeSkype : Skype reverse engineering proof-of-concept client
* Ouanilo MEDEGAN (c) 2006 http://www.oklabs.net
* pyskype : Skype login Python script by uunicorn
*
* Written by: leecher@dose.0wnz.at (c) 2015
*
* Module: WINDOWS platform specific functions
*
*/
#include <rpc.h>
#include "common.h"
#include "random.h"
#define WIN32_LEAN_AND_MEAN
#include <windows.h>
#pragma comment (lib,"rpcrt4.lib")
static uchar RandomSeed[SHA_DIGEST_LENGTH] = {0};
static BOOL QueryRegValue(HKEY hKey, LPCSTR lpSubKey, LPBYTE lpValue, LPDWORD pCbValue)
{
char *pSubKey, *pTok, szKey[256]={0};
DWORD dwIndex;
LONG ret;
if ( !lpSubKey || !*lpSubKey ) return FALSE;
if ( *lpSubKey != '*' )
{
for (pSubKey = (char*)lpSubKey; *pSubKey != '*'; pSubKey = pTok + 1)
if (!(pTok = strchr(pSubKey, '\\'))) break;
if ( pSubKey > lpSubKey )
{
if ( pSubKey - lpSubKey == 1 ) return FALSE;
strncpy (szKey, lpSubKey, pSubKey - lpSubKey - 1);
if (RegOpenKeyA (hKey, szKey, &hKey) == ERROR_SUCCESS)
{
ret = QueryRegValue(hKey, pSubKey, lpValue, pCbValue);
RegCloseKey(hKey);
return ret;
}
return FALSE;
}
if ( *lpSubKey != '*' ) return RegQueryValueExA (hKey, lpSubKey, NULL, NULL, lpValue, pCbValue) == ERROR_SUCCESS;
}
if (lpSubKey[1] != '\\')
return RegQueryValueExA (hKey, lpSubKey, NULL, NULL, lpValue, pCbValue) == ERROR_SUCCESS;
for (dwIndex = 0; (ret = RegEnumKeyA (hKey, dwIndex, szKey, sizeof(szKey))) == ERROR_SUCCESS; dwIndex++)
{
char szSubKey[256];
sprintf (szSubKey, "%s%s", szKey, lpSubKey+1);
if (QueryRegValue (hKey, szSubKey, lpValue, pCbValue)) break;
}
return ret == ERROR_SUCCESS;
}
int64_t PlatFormSpecific()
{
BYTE Buffer[0x400];
DWORD BufSz = 0x400;
int Idx, Used;
Used = Idx = 0;
if (QueryRegValue(HKEY_LOCAL_MACHINE,
"SOFTWARE\\Microsoft\\Windows\\CurrentVersion\\ProductId",
(LPBYTE)Buffer, &BufSz))
Used += BufSz;
BufSz = sizeof(Buffer)-Used;
if (QueryRegValue(HKEY_LOCAL_MACHINE,
"HARDWARE\\DESCRIPTION\\System\\MultifunctionAdapter\\*\\DiskController\\*\\DiskPeripheral\\*\\Identifier",
(LPBYTE)Buffer + Used, &BufSz))
Used += BufSz;
if (GetVolumeInformationA("C:\\", 0, 0, (LPDWORD)(Buffer + Used), 0, 0, 0, 0))
Used+=4;
return BytesSHA1I64(Buffer, Used);
}
void InitNodeId(Skype_Inst *pInst)
{
DWORD BufSz = sizeof(pInst->NodeID);
HKEY hKey;
if (QueryRegValue(HKEY_LOCAL_MACHINE,
"SOFTWARE\\FakeSkype\\NodeId",
(LPBYTE)&pInst->NodeID, &BufSz)) return;
*(int64_t *)&pInst->NodeID = BytesRandomI64();
if (RegCreateKeyA(HKEY_LOCAL_MACHINE, "SOFTWARE\\FakeSkype", &hKey) == ERROR_SUCCESS)
{
RegSetValueExA(hKey, "NodeId", 0, REG_BINARY, (LPBYTE)&pInst->NodeID, sizeof(pInst->NodeID));
RegCloseKey(hKey);
}
//FIXED NODEID
//memcpy_s(NodeID, NODEID_SZ, "\x49\x63\xff\xee\xe0\x5c\x9d\xf8", NODEID_SZ);
//memcpy_s(NodeID, NODEID_SZ, "\x97\xca\xb1\x72\x06\xf6\x72\xb4", NODEID_SZ);
}
Memory_U Credentials_Load(char *pszUser)
{
Memory_U creds={0};
HKEY hKey;
char szKey[MAX_PATH];
sprintf (szKey, "SOFTWARE\\FakeSkype\\%s", pszUser);
if (RegCreateKeyA(HKEY_LOCAL_MACHINE, szKey, &hKey) == ERROR_SUCCESS)
{
if (RegQueryValueExA(hKey, "Credentials", NULL, NULL, NULL, &creds.MsZ) == ERROR_SUCCESS &&
creds.MsZ)
{
if (!(creds.Memory = malloc(creds.MsZ)))
creds.MsZ = 0;
if (creds.Memory && RegQueryValueExA(hKey, "Credentials", NULL, NULL, creds.Memory, &creds.MsZ) != ERROR_SUCCESS)
{
free(creds.Memory);
ZeroMemory(&creds, sizeof(creds));
}
}
RegCloseKey(hKey);
}
return creds;
}
int Credentials_Save(Memory_U creds, char *pszUser)
{
HKEY hKey;
int iRet = 0;
char szKey[MAX_PATH];
sprintf (szKey, "SOFTWARE\\FakeSkype\\%s", pszUser);
if (RegCreateKeyA(HKEY_LOCAL_MACHINE, szKey, &hKey) == ERROR_SUCCESS)
{
iRet = RegSetValueExA(hKey, "Credentials", 0, REG_BINARY, creds.Memory, creds.MsZ) == ERROR_SUCCESS;
RegCloseKey(hKey);
}
return iRet;
}
void FillMiscDatas(Skype_Inst *pInst, unsigned int *Datas)
{
BYTE Buffer[0x400];
DWORD BufSz = 0x400;
int ret;
int64_t PlatForm;
PlatForm = PlatFormSpecific();
Datas[0] = *(unsigned int *)&PlatForm;
Datas[1] = *(unsigned int *)&pInst->NodeID;
if (!QueryRegValue(HKEY_LOCAL_MACHINE,
"SOFTWARE\\Microsoft\\Windows\\CurrentVersion\\ProductId",
(LPBYTE)Buffer, &BufSz))
return;
Datas[2] = BytesSHA1(Buffer, BufSz);
BufSz = 0x400;
if (!QueryRegValue(HKEY_LOCAL_MACHINE,
"HARDWARE\\DESCRIPTION\\System\\MultifunctionAdapter\\*\\DiskController\\*\\DiskPeripheral\\*\\Identifier",
(LPBYTE)Buffer, &BufSz))
return;
Datas[3] = BytesSHA1(Buffer, BufSz);
ret = GetVolumeInformationA("C:\\", 0, 0, (LPDWORD)Buffer, 0, 0, 0, 0);
Datas[4] = BytesSHA1(Buffer, 0x04);
}
void FillRndBuffer(unsigned char *Buffer)
{
SHA_CTX Context;
int idx;
idx = 0;
memcpy(Buffer, RandomSeed, SHA_DIGEST_LENGTH);
idx += sizeof(RandomSeed);
GlobalMemoryStatus((LPMEMORYSTATUS)&Buffer[idx]);
idx += sizeof(MEMORYSTATUS);
UuidCreate((UUID *)&Buffer[idx]);
idx += sizeof(UUID);
GetCursorPos((LPPOINT)&Buffer[idx]);
idx += sizeof(POINT);
*(DWORD *)(Buffer + idx) = GetTickCount();
*(DWORD *)(Buffer + idx + 4) = GetMessageTime();
*(DWORD *)(Buffer + idx + 8) = GetCurrentThreadId();
*(DWORD *)(Buffer + idx + 12) = GetCurrentProcessId();
idx += 16;
QueryPerformanceCounter((LARGE_INTEGER *)&Buffer[idx]);
SHA1_Init(&Context);
SHA1_Update(&Context, Buffer, 0x464);
SHA1_Update(&Context, "additional salt...", 0x13);
SHA1_Final(RandomSeed, &Context);
}
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