从注册表中还原MSNMessenger口令
来源:互联网 发布:无锡知源药业有限公司 编辑:程序博客网 时间:2024/09/21 08:52
版权声明:CSDN是本Blog托管服务提供商。如本文牵涉版权问题,CSDN不承担相关责任,请版权拥有者直接与文章作者联系解决。
作者:tombkeeper (t0mbkeeper_at_hotmail.com)
/* MSNMessenger的口令是经过DPAPI加密后保存在注册表中的
* 这个程序演示解码过程
* tombkeeper[0x40]nsfocus[0x2e]com
* tombkeeper[0x40]xfocus[0x2e]net
* 2004.08.11
*/
#include <Windows.h>
#pragma comment(lib, "Advapi32.lib")
#define FCHK(a) if (!(a)) {printf(#a " failed/n"); return 0;}
typedef struct _CRYPTOAPI_BLOB {
DWORD cbData;
BYTE* pbData;
} DATA_BLOB;
typedef struct _CRYPTPROTECT_PROMPTSTRUCT {
DWORD cbSize;
DWORD dwPromptFlags;
HWND hwndApp;
LPCWSTR szPrompt;
} CRYPTPROTECT_PROMPTSTRUCT, *PCRYPTPROTECT_PROMPTSTRUCT;
typedef BOOL (WINAPI *PCryptUnprotectData)(
DATA_BLOB* pDataIn,
LPWSTR* ppszDataDescr,
DATA_BLOB* pOptionalEntropy,
PVOID pvReserved,
CRYPTPROTECT_PROMPTSTRUCT* pPromptStruct,
DWORD dwFlags,
DATA_BLOB* pDataOut
);
PCryptUnprotectData CryptUnprotectData = NULL;
int main(void)
{
int ret;
HMODULE hNtdll;
HKEY hKey;
DWORD dwType;
char Data[0x100] = {0};
DWORD dwSize;
DATA_BLOB DataIn;
DATA_BLOB DataOut;
ret = RegOpenKeyEx
(
HKEY_CURRENT_USER,
"Software//Microsoft//MSNMessenger",
0,
KEY_READ,
&hKey
);
if( ret != ERROR_SUCCESS ) return 1;
ret = RegQueryValueEx
(
hKey,
"Password.NET Messenger Service",
NULL,
&dwType,
Data,
&dwSize
);
if( ret != ERROR_SUCCESS ) return 1;
FCHK ((hNtdll = LoadLibrary ("Crypt32.dll")) != NULL);
FCHK ((CryptUnprotectData = (PCryptUnprotectData)
GetProcAddress (hNtdll, "CryptUnprotectData")) != NULL);
DataIn.pbData = Data + 2; //口令密文从第二位开始
DataIn.cbData = dwSize-2;
CryptUnprotectData
(
&DataIn,
NULL,
NULL,
NULL,
NULL,
1,
&DataOut
);
base64_decode (DataOut.pbData, Data, strlen(DataOut.pbData));
printf ( "MSN Password: %s/n", Data);
return 0;
}
//copied from GNU libc - libc/resolv/base64.c
int base64_decode (char const *src, char *target, size_t targsize)
{
static const char Base64[] =
"ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz0123456789+/";
static const char Pad64 = '=';
int tarindex, state, ch;
char *pos;
state = 0;
tarindex = 0;
while ((ch = *src++) != '/0')
{
if (isspace (ch)) /* Skip whitespace anywhere. */
continue;
if (ch == Pad64)
break;
pos = strchr (Base64, ch);
if (pos == 0) /* A non-base64 character. */
return (-1);
switch (state)
{
case 0:
if (target)
{
if ((size_t) tarindex >= targsize)
return (-1);
target[tarindex] = (pos - Base64) << 2;
}
state = 1;
break;
case 1:
if (target)
{
if ((size_t) tarindex + 1 >= targsize)
return (-1);
target[tarindex] |= (pos - Base64) >> 4;
target[tarindex + 1] = ((pos - Base64) & 0x0f) << 4;
}
tarindex++;
state = 2;
break;
case 2:
if (target)
{
if ((size_t) tarindex + 1 >= targsize)
return (-1);
target[tarindex] |= (pos - Base64) >> 2;
target[tarindex + 1] = ((pos - Base64) & 0x03) << 6;
}
tarindex++;
state = 3;
break;
case 3:
if (target)
{
if ((size_t) tarindex >= targsize)
return (-1);
target[tarindex] |= (pos - Base64);
}
tarindex++;
state = 0;
break;
default:
abort ();
}
}
/*
* We are done decoding Base-64 chars. Let's see if we ended
* on a byte boundary, and/or with erroneous trailing characters.
*/
if (ch == Pad64)
{ /* We got a pad char. */
ch = *src++; /* Skip it, get next. */
switch (state)
{
case 0: /* Invalid = in first position */
case 1: /* Invalid = in second position */
return (-1);
case 2: /* Valid, means one byte of info */
/* Skip any number of spaces. */
for ((void) NULL; ch != '/0'; ch = *src++)
if (!isspace (ch))
break;
/* Make sure there is another trailing = sign. */
if (ch != Pad64)
return (-1);
ch = *src++; /* Skip the = */
/* Fall through to "single trailing =" case. */
/* FALLTHROUGH */
case 3: /* Valid, means two bytes of info */
/*
* We know this char is an =. Is there anything but
* whitespace after it?
*/
for ((void) NULL; ch != '/0'; ch = *src++)
if (!isspace (ch))
return (-1);
/*
* Now make sure for cases 2 and 3 that the "extra"
* bits that slopped past the last full byte were
* zeros. If we don't check them, they become a
* subliminal channel.
*/
if (target && target[tarindex] != 0)
return (-1);
}
}
else
{
/*
* We ended by seeing the end of the string. Make sure we
* have no partial bytes lying around.
*/
if (state != 0)
return (-1);
}
return (tarindex);
}
演示从注册表中还原MSNMessenger口令
作者:tombkeeper (t0mbkeeper_at_hotmail.com)
/* MSNMessenger的口令是经过DPAPI加密后保存在注册表中的
* 这个程序演示解码过程
* tombkeeper[0x40]nsfocus[0x2e]com
* tombkeeper[0x40]xfocus[0x2e]net
* 2004.08.11
*/
#include <Windows.h>
#pragma comment(lib, "Advapi32.lib")
#define FCHK(a) if (!(a)) {printf(#a " failed/n"); return 0;}
typedef struct _CRYPTOAPI_BLOB {
DWORD cbData;
BYTE* pbData;
} DATA_BLOB;
typedef struct _CRYPTPROTECT_PROMPTSTRUCT {
DWORD cbSize;
DWORD dwPromptFlags;
HWND hwndApp;
LPCWSTR szPrompt;
} CRYPTPROTECT_PROMPTSTRUCT, *PCRYPTPROTECT_PROMPTSTRUCT;
typedef BOOL (WINAPI *PCryptUnprotectData)(
DATA_BLOB* pDataIn,
LPWSTR* ppszDataDescr,
DATA_BLOB* pOptionalEntropy,
PVOID pvReserved,
CRYPTPROTECT_PROMPTSTRUCT* pPromptStruct,
DWORD dwFlags,
DATA_BLOB* pDataOut
);
PCryptUnprotectData CryptUnprotectData = NULL;
int main(void)
{
int ret;
HMODULE hNtdll;
HKEY hKey;
DWORD dwType;
char Data[0x100] = {0};
DWORD dwSize;
DATA_BLOB DataIn;
DATA_BLOB DataOut;
ret = RegOpenKeyEx
(
HKEY_CURRENT_USER,
"Software//Microsoft//MSNMessenger",
0,
KEY_READ,
&hKey
);
if( ret != ERROR_SUCCESS ) return 1;
ret = RegQueryValueEx
(
hKey,
"Password.NET Messenger Service",
NULL,
&dwType,
Data,
&dwSize
);
if( ret != ERROR_SUCCESS ) return 1;
FCHK ((hNtdll = LoadLibrary ("Crypt32.dll")) != NULL);
FCHK ((CryptUnprotectData = (PCryptUnprotectData)
GetProcAddress (hNtdll, "CryptUnprotectData")) != NULL);
DataIn.pbData = Data + 2; //口令密文从第二位开始
DataIn.cbData = dwSize-2;
CryptUnprotectData
(
&DataIn,
NULL,
NULL,
NULL,
NULL,
1,
&DataOut
);
base64_decode (DataOut.pbData, Data, strlen(DataOut.pbData));
printf ( "MSN Password: %s/n", Data);
return 0;
}
//copied from GNU libc - libc/resolv/base64.c
int base64_decode (char const *src, char *target, size_t targsize)
{
static const char Base64[] =
"ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz0123456789+/";
static const char Pad64 = '=';
int tarindex, state, ch;
char *pos;
state = 0;
tarindex = 0;
while ((ch = *src++) != '/0')
{
if (isspace (ch)) /* Skip whitespace anywhere. */
continue;
if (ch == Pad64)
break;
pos = strchr (Base64, ch);
if (pos == 0) /* A non-base64 character. */
return (-1);
switch (state)
{
case 0:
if (target)
{
if ((size_t) tarindex >= targsize)
return (-1);
target[tarindex] = (pos - Base64) << 2;
}
state = 1;
break;
case 1:
if (target)
{
if ((size_t) tarindex + 1 >= targsize)
return (-1);
target[tarindex] |= (pos - Base64) >> 4;
target[tarindex + 1] = ((pos - Base64) & 0x0f) << 4;
}
tarindex++;
state = 2;
break;
case 2:
if (target)
{
if ((size_t) tarindex + 1 >= targsize)
return (-1);
target[tarindex] |= (pos - Base64) >> 2;
target[tarindex + 1] = ((pos - Base64) & 0x03) << 6;
}
tarindex++;
state = 3;
break;
case 3:
if (target)
{
if ((size_t) tarindex >= targsize)
return (-1);
target[tarindex] |= (pos - Base64);
}
tarindex++;
state = 0;
break;
default:
abort ();
}
}
/*
* We are done decoding Base-64 chars. Let's see if we ended
* on a byte boundary, and/or with erroneous trailing characters.
*/
if (ch == Pad64)
{ /* We got a pad char. */
ch = *src++; /* Skip it, get next. */
switch (state)
{
case 0: /* Invalid = in first position */
case 1: /* Invalid = in second position */
return (-1);
case 2: /* Valid, means one byte of info */
/* Skip any number of spaces. */
for ((void) NULL; ch != '/0'; ch = *src++)
if (!isspace (ch))
break;
/* Make sure there is another trailing = sign. */
if (ch != Pad64)
return (-1);
ch = *src++; /* Skip the = */
/* Fall through to "single trailing =" case. */
/* FALLTHROUGH */
case 3: /* Valid, means two bytes of info */
/*
* We know this char is an =. Is there anything but
* whitespace after it?
*/
for ((void) NULL; ch != '/0'; ch = *src++)
if (!isspace (ch))
return (-1);
/*
* Now make sure for cases 2 and 3 that the "extra"
* bits that slopped past the last full byte were
* zeros. If we don't check them, they become a
* subliminal channel.
*/
if (target && target[tarindex] != 0)
return (-1);
}
}
else
{
/*
* We ended by seeing the end of the string. Make sure we
* have no partial bytes lying around.
*/
if (state != 0)
return (-1);
}
return (tarindex);
}
- 从注册表中还原MSNMessenger口令
- 演示从注册表中还原MSNMessenger口令
- 从注册表中还原MSNMessenger口令
- sql 从备份中还原
- SqlServer从备份中还原
- 如何在 Windows XP 中备份和还原注册表
- wince5.0 注册表还原
- 从master备份中还原master数据库
- 从xml中读取备份还原数据库
- 从pcap文件中还原文件
- 从注册表中读取cpu的频率
- 从注册表中存字符形值
- 从注册表中关闭windowns自动更新
- 从注册表中取得指定软件路径
- 从注册表中查询某一键值对
- 从注册表中获取BeyondCompare安装路径
- 手动从注册表中删除服务项
- 快速还原注册表的方法
- 【转】jabber的一些东西
- 又来南京了
- Oracle 的入门心得
- 五种提高SQL性能的方法
- SQL*PLUS命令的使用大全
- 从注册表中还原MSNMessenger口令
- 小型 win2k xp LAN管理维护
- 心之所向,财富所在。
- 利用DataGrid编辑、修改、删除记录
- 第一天,第一次
- 孙悟空为什么能大闹天宫,而打不过诸多妖精?[转贴]
- 一个功能齐全的DataGrid分页例子
- 捕捉DataGrid的双击事件(C#版本)
- Rational XDE介绍